CA1103032A - Paper clamping device for sanding machine - Google Patents
Paper clamping device for sanding machineInfo
- Publication number
- CA1103032A CA1103032A CA342,063A CA342063A CA1103032A CA 1103032 A CA1103032 A CA 1103032A CA 342063 A CA342063 A CA 342063A CA 1103032 A CA1103032 A CA 1103032A
- Authority
- CA
- Canada
- Prior art keywords
- clamping
- back plate
- surface treating
- section
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
- B24B23/046—Clamping or tensioning means for abrasive sheets
Abstract
PAPER CLAMPING DEVICE FOR SANDING MACHINE
ABSTRACT
In a power driven, portable surface treating machine, a mechanism is provided for clamping a surface treating material to the back plate of the surface treating machine. The clamping mechanism comprises a back plate having a clamp seat at one end thereof extending horizontally across substantially the entire length of said one end of said back plate, and a device for clamping one end of the surface treating material.
The clamping device includes a manipulative over-center camming lever pivotably supported on the back plate, the lever having a power arm section which has a finger grip at its rear and a camming arm section offset laterally from the forward end of the power arm sec-tion. The clamping device also includes a reciprocably shiftable, resilient wire clamping member having a connecting section substantially perpendicular to and pivotably mounted on the camming arm section of the lever and a clamping section fixedly secured to the connecting section and extending substantially parallel to the clamp seat in the back plate, whereby when the camming lever is moved to its over-center position the clamping section of the resilient wire clamping member aligns itself within the clamp seat to thereby clamp the end of the surface treating material.
ABSTRACT
In a power driven, portable surface treating machine, a mechanism is provided for clamping a surface treating material to the back plate of the surface treating machine. The clamping mechanism comprises a back plate having a clamp seat at one end thereof extending horizontally across substantially the entire length of said one end of said back plate, and a device for clamping one end of the surface treating material.
The clamping device includes a manipulative over-center camming lever pivotably supported on the back plate, the lever having a power arm section which has a finger grip at its rear and a camming arm section offset laterally from the forward end of the power arm sec-tion. The clamping device also includes a reciprocably shiftable, resilient wire clamping member having a connecting section substantially perpendicular to and pivotably mounted on the camming arm section of the lever and a clamping section fixedly secured to the connecting section and extending substantially parallel to the clamp seat in the back plate, whereby when the camming lever is moved to its over-center position the clamping section of the resilient wire clamping member aligns itself within the clamp seat to thereby clamp the end of the surface treating material.
Description
3~32 .
DESCRIPTION
PAPER CLAMPING DEVICE FOR SANDING MACHINE
.
BACKGROUND OF THE INVENTION
The instant invention relates to surface treating machines, and more particularly to clamps for power driven devices or tools adapted to be manipulated over a surface to be treated for sanding, grinding, polish-ing, or buffing.
Since the most common use of such surface treating devices is with respect to sanding such surface to be treated, it is usual to refer to such devices as power sanders, although obviously they can be used for other than sanding operations. In the ensuing description and claims, when reference is made to a power sander, it is intended to connote broadly surface treating devices.
In surface treating machines, of which perhaps the most important is a sanding machine, the portable elec-tric sander has become very popular in recent years.
r~
.... . . .... .
~303Z
There is hardly an adult person today who has not had occasion to use a sander in some form or other for treating a surface, whether it be the surface of a piece of furniture or some other project. As a result of the "do-it-yourself" trend, there has been a tremen-dous increase in the demand for portable electric sanders, and there have been extensively sold on the market several types of these sanders, among which are the purely vibratory sander, the rotary disk type sander, the belt type sander, the orbital sander, dual motion (orbital and vibratory) sanders, and others. Of the several types of sanders, the orbital, the vibra-tory and the dual motion sanders offer the greatest utility for all-around work, and the present invention is particularly concerned with these sanders.
A surface treating machine such as an electric sander requires simple and readily actuatable means for releasing and securing the sandpaper to the machine.
In any particular sanding operation, it may be desir-able to start the surface treating machine with acoarse sandpaper, followed by a medium and then a fine paper, and this action may be followed by a waxing or polishing operation using the same surface treating machine. Obviously, this requires a mechanism for quickly and eas.ily attaching and releasing sandpaper or other surface treating material, and it would be desir-able to provide a locking device which easily clamps any form of abrasive such as sandpaper tightly thereto regardless of the thickness of the abrasive paper and without the requirement of any tools.
The prior art abounds with clamping devices for vibratory and orbital sanders, including several over-center locking devices. However, most of the over-center clamping devices include spring members, thereby complicating assembly of the sander and requiring con-siderable effort to lock and release the sandpaper.
The instant invention overcomes the problems associated with prior art over-center clamping devices by provid-ing an over-center clamping device which can be easily assernbled without any spring tension and which is easily moved into a locking position to clamp the sandpaper tightly.
SUMMARY OF THE INVENTION
In a power driven, portable surface treating machine, a mechanism is provided for clamping a surface treating material to the back plate of the surface treating machine. The clamping mechanism comprises a back plate having a clamp seat at one end thereof extending horizontally across substantially the entire length of said one end of said back plate, and a device -for clamping one end of the surface treating material.The clamping device includes a manipulative over-center camming lever pivotably supported on the back plate, the lever having a power arm section which has a finger grip at its rear and a camming arm section offset laterally from the forward end of the power arm sec-tion. The clamping device also includes a reciprocably shiftable, resilient wire clamping member having a connecting section substantially perpendicular to and pivotably mounted on the camming arm section of the lever and a clamping section fixedly secured to the connecting section and extending substantially parallel to the clamp seat in the bac~ plate, whereby when the camming lever is moved to its over-center position the clamping section of the resilient wire clamping member aligns itself within the clamp seat to thereby clamp the end of the surface treating material.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an orbital sander embodying a clamping mechanism according to the instant invention;
FIG. 2 is an enlarged, side elevational view of the sander shown in FIG. 1 with the rear end of the sander broken away;
FIG. 3 is an enlarged, sectional view taken on the horizontal plane indicated by the line 3-3 of FIG. 2;
FIG. 4 is an enlarged, fragmentary, front eleva-tional view of the sander shown in FIG. l;
FIG. 5 is an enlarged, fragmentary, side eleva-tional view of the sander shown in FIG. l;
FIG. 6 is an enlarged, top plan view of the clamp-ing mechanism shown in FIG. l;
FIG. 7 is an enlarged, side elevational view of the clamping mechanism shown in FIG. 6.
DETAILED DESCRIPTION
. . .
In describing the preferred embodiment of the instant invent.ion, reference is made to the drawings, wherein there is seen in FIG. 1 an electrically driven, , . . .
.. .. ~
11(;~303Z
portable, orbital sander 10 having a clam shell housing 12 comprising a pair of complementary halves 14 and 16, which are detachably connected along a longitudinal split 18 by machine screws 20 and nuts 22 ~see FIG. 2).
A main handle 24 formed integral with the housing 12 is provided with an operator-controlled electric on-off switch 26 between a motor 28 and a suitable source of electric power. A forwardly positioned auxiliary handle 30 is also provided so that the sander 10 can be grasped and controlled by the operator. The housing 12 is provided with slots 31 for the entry of cooling air for the motor 28 and with at least one slot 33 for the exit of the air from the sander 10.
The motor 28 drives a platen assembly 32 connected 15 to the housing 12 at the bottom thereof. An armature shaft 34 of the motor 28 has a pinion 36 formed on its lower end which, through a gear reduction mechanism 38 having an eccentric crank 40 at its lower end connects to and eccentrically drives a bearing bracket 42 mount-ed. on the rectangular rigid back plate 44 of the platen assembly 32. The bearing bracket 42 thereby imparts orbital motion to the rectangular, rlgid back plate 44.
The armature shaft 34 is also furnished with a fan 35 to induce cooling air through the slots 31.
A resili.ent pad 46 is bonded to the back plate 44 on which is typically mounted suitable sandpaper 48.
Both the pad 46 and back plate 44 are essentially planar except for the terminal, longitudinally extend-ing edges 50 at the ends of the back plate 44 which are turned up along their lengths to thereby enable the edges 50 to function as clamp seats, as described in greater detail hereinafter.
. ~
: ~:
.
.
3C~3;Z
The platen assembly 32, in its preferred form, is re-ctangular in plan view as can be seen most clearly in FIGS. 1 and 3. The back plate 44 is provided, adjacent each of its four corners, with apertures 52 which receive a self-tapping metal screw 54. Four resilient posts 56, preferably formed from a hard rubber, are provided with through apertures 58 through which screws 54 pass, thereby fastening the.four posts 56 to the back plate 44.
The housing 12 is provided at each end with a transversely extending, generally U-shaped recess 60 dimensioned to receive the top flange 62 which is formed on each of the resilient posts 56. The thick-ness of the flanye 62, which is generally rectangular in configuration, in such that upon assembly with the housing 12 the flange 62 will be accepted within the recess 60. Preferably a sliding fit between the fIange 62 and internal walls of the recess 60 is pro-vided, although the height of the recess 60 may be tapered slightly from the opening at the longitudinal split 18 in the housing i2 to the outer sidewall of the housing 12 to enhance retention of the flange 62 within the recess 60. It will also be appreciated that by forming the recess 60 with a tapered height the inser- .
tion of the flange 62 into the recess 60 during assem-hly will be facilitated, thereby aiding assembly in the mass production of the sander 10.
Each of the longitudinally extending edges 50 of the back plate 44 includes a groove 64 extending hori-zontally through the entire length of the edge 50. The .
... .
' . . - . - : . . : ~
, , ' ' ., ~ ~"' 11~32 groove 50 functions as a seat for a clamping device 66 which clamps the ends of the sandpaper 48 to the resil-ient pad 46. The clamping device 66 includes a manip-ulative, over-center camming lever 68 pivotably sup-ported in a rigid post 70 formed integral with the backplate 44. The lever 68 is held in position, as best seen in FIG. 2, by a washer 72 situated under the resilient post 56. The lever 68 includes a power arm section 74 having a finger grip 76 at its rear and a camming arm section 78 offset laterally from the for-ward end of the power arm section 74.
The clamping device 66 also includes a reciproc-ably shiftable, resilient wire clamping member 80 having two connecting sections 82 perpendicular to and lS pivotably mounted on the camming arm section 78, and a pair of transverse members 84 each extending laterally from one of the connecting sections 82. A pair of angular legs 86 extend downwardly and inwardly toward the lever 68, and extending between the legs 86 par-allel to the groove 50 is a clamping section or bight 88.
Protuberances 90 are formed on the camming arm section 78 just inside the connecting sections 82 to center the connecting section 82 on the camming arm section 78. Extending upwardly from each of the longi-tudinally extending edges 50 are three arced projec-tions 92, 94 and 96 respectively, with spaces there-between to define a pair of gaps 98. The projections 92 and 94 include therein recesses 100 adjacent the gaps 98. The connecting sections 82, as further explained below, reciprocate horizontally in and are guided by thé recesses 100.
i !
I
.
.
. ~ :
.
:
~1~3~32 ,:
In using the clamping device 66, the operator takes one end of the sandpaper 48 and lays it over the groove 64, with the appropriate clamping device 66 in the release position, as seen by the dotted lines of FIG. 3. The camming lever 68 is then grasped by a fin-ger at the finger grip 76 and merely rotated to the over-center position shown by the solid lines in FIG.
3, thereby causing the wire clamping member 80 to move inwardly toward the groove 64 and grip the end of the sandpaper 48 with the clamping bight 80. The sandpaper 48 is then laid across the resilient pad 46 and around the other groove 64, and the same operation with the other clamping device 66 is repeated.
It can be seen that the camming lever 68 actuates the clamping member 80 to move in a horizontal plane without the use of any spring members. The clamping device 66 effectively locks the sandpaper 48 against possible release by vibratory forces developed durlng operation of the sander 10 by its being moved to the over-center position without the need for any locking tabs or projections. Clearly then, the clamping device 66 is one which is easily moved by the operator.
It will be understood that various changes in the details, materials, arrangements of parts and operating conditions which have been herein described and illus-trated in order to explain the nature o~ the invention may be made by those skilled in the art within the principles and scope of the invention.
!
:r ~
':
, '
DESCRIPTION
PAPER CLAMPING DEVICE FOR SANDING MACHINE
.
BACKGROUND OF THE INVENTION
The instant invention relates to surface treating machines, and more particularly to clamps for power driven devices or tools adapted to be manipulated over a surface to be treated for sanding, grinding, polish-ing, or buffing.
Since the most common use of such surface treating devices is with respect to sanding such surface to be treated, it is usual to refer to such devices as power sanders, although obviously they can be used for other than sanding operations. In the ensuing description and claims, when reference is made to a power sander, it is intended to connote broadly surface treating devices.
In surface treating machines, of which perhaps the most important is a sanding machine, the portable elec-tric sander has become very popular in recent years.
r~
.... . . .... .
~303Z
There is hardly an adult person today who has not had occasion to use a sander in some form or other for treating a surface, whether it be the surface of a piece of furniture or some other project. As a result of the "do-it-yourself" trend, there has been a tremen-dous increase in the demand for portable electric sanders, and there have been extensively sold on the market several types of these sanders, among which are the purely vibratory sander, the rotary disk type sander, the belt type sander, the orbital sander, dual motion (orbital and vibratory) sanders, and others. Of the several types of sanders, the orbital, the vibra-tory and the dual motion sanders offer the greatest utility for all-around work, and the present invention is particularly concerned with these sanders.
A surface treating machine such as an electric sander requires simple and readily actuatable means for releasing and securing the sandpaper to the machine.
In any particular sanding operation, it may be desir-able to start the surface treating machine with acoarse sandpaper, followed by a medium and then a fine paper, and this action may be followed by a waxing or polishing operation using the same surface treating machine. Obviously, this requires a mechanism for quickly and eas.ily attaching and releasing sandpaper or other surface treating material, and it would be desir-able to provide a locking device which easily clamps any form of abrasive such as sandpaper tightly thereto regardless of the thickness of the abrasive paper and without the requirement of any tools.
The prior art abounds with clamping devices for vibratory and orbital sanders, including several over-center locking devices. However, most of the over-center clamping devices include spring members, thereby complicating assembly of the sander and requiring con-siderable effort to lock and release the sandpaper.
The instant invention overcomes the problems associated with prior art over-center clamping devices by provid-ing an over-center clamping device which can be easily assernbled without any spring tension and which is easily moved into a locking position to clamp the sandpaper tightly.
SUMMARY OF THE INVENTION
In a power driven, portable surface treating machine, a mechanism is provided for clamping a surface treating material to the back plate of the surface treating machine. The clamping mechanism comprises a back plate having a clamp seat at one end thereof extending horizontally across substantially the entire length of said one end of said back plate, and a device -for clamping one end of the surface treating material.The clamping device includes a manipulative over-center camming lever pivotably supported on the back plate, the lever having a power arm section which has a finger grip at its rear and a camming arm section offset laterally from the forward end of the power arm sec-tion. The clamping device also includes a reciprocably shiftable, resilient wire clamping member having a connecting section substantially perpendicular to and pivotably mounted on the camming arm section of the lever and a clamping section fixedly secured to the connecting section and extending substantially parallel to the clamp seat in the bac~ plate, whereby when the camming lever is moved to its over-center position the clamping section of the resilient wire clamping member aligns itself within the clamp seat to thereby clamp the end of the surface treating material.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an orbital sander embodying a clamping mechanism according to the instant invention;
FIG. 2 is an enlarged, side elevational view of the sander shown in FIG. 1 with the rear end of the sander broken away;
FIG. 3 is an enlarged, sectional view taken on the horizontal plane indicated by the line 3-3 of FIG. 2;
FIG. 4 is an enlarged, fragmentary, front eleva-tional view of the sander shown in FIG. l;
FIG. 5 is an enlarged, fragmentary, side eleva-tional view of the sander shown in FIG. l;
FIG. 6 is an enlarged, top plan view of the clamp-ing mechanism shown in FIG. l;
FIG. 7 is an enlarged, side elevational view of the clamping mechanism shown in FIG. 6.
DETAILED DESCRIPTION
. . .
In describing the preferred embodiment of the instant invent.ion, reference is made to the drawings, wherein there is seen in FIG. 1 an electrically driven, , . . .
.. .. ~
11(;~303Z
portable, orbital sander 10 having a clam shell housing 12 comprising a pair of complementary halves 14 and 16, which are detachably connected along a longitudinal split 18 by machine screws 20 and nuts 22 ~see FIG. 2).
A main handle 24 formed integral with the housing 12 is provided with an operator-controlled electric on-off switch 26 between a motor 28 and a suitable source of electric power. A forwardly positioned auxiliary handle 30 is also provided so that the sander 10 can be grasped and controlled by the operator. The housing 12 is provided with slots 31 for the entry of cooling air for the motor 28 and with at least one slot 33 for the exit of the air from the sander 10.
The motor 28 drives a platen assembly 32 connected 15 to the housing 12 at the bottom thereof. An armature shaft 34 of the motor 28 has a pinion 36 formed on its lower end which, through a gear reduction mechanism 38 having an eccentric crank 40 at its lower end connects to and eccentrically drives a bearing bracket 42 mount-ed. on the rectangular rigid back plate 44 of the platen assembly 32. The bearing bracket 42 thereby imparts orbital motion to the rectangular, rlgid back plate 44.
The armature shaft 34 is also furnished with a fan 35 to induce cooling air through the slots 31.
A resili.ent pad 46 is bonded to the back plate 44 on which is typically mounted suitable sandpaper 48.
Both the pad 46 and back plate 44 are essentially planar except for the terminal, longitudinally extend-ing edges 50 at the ends of the back plate 44 which are turned up along their lengths to thereby enable the edges 50 to function as clamp seats, as described in greater detail hereinafter.
. ~
: ~:
.
.
3C~3;Z
The platen assembly 32, in its preferred form, is re-ctangular in plan view as can be seen most clearly in FIGS. 1 and 3. The back plate 44 is provided, adjacent each of its four corners, with apertures 52 which receive a self-tapping metal screw 54. Four resilient posts 56, preferably formed from a hard rubber, are provided with through apertures 58 through which screws 54 pass, thereby fastening the.four posts 56 to the back plate 44.
The housing 12 is provided at each end with a transversely extending, generally U-shaped recess 60 dimensioned to receive the top flange 62 which is formed on each of the resilient posts 56. The thick-ness of the flanye 62, which is generally rectangular in configuration, in such that upon assembly with the housing 12 the flange 62 will be accepted within the recess 60. Preferably a sliding fit between the fIange 62 and internal walls of the recess 60 is pro-vided, although the height of the recess 60 may be tapered slightly from the opening at the longitudinal split 18 in the housing i2 to the outer sidewall of the housing 12 to enhance retention of the flange 62 within the recess 60. It will also be appreciated that by forming the recess 60 with a tapered height the inser- .
tion of the flange 62 into the recess 60 during assem-hly will be facilitated, thereby aiding assembly in the mass production of the sander 10.
Each of the longitudinally extending edges 50 of the back plate 44 includes a groove 64 extending hori-zontally through the entire length of the edge 50. The .
... .
' . . - . - : . . : ~
, , ' ' ., ~ ~"' 11~32 groove 50 functions as a seat for a clamping device 66 which clamps the ends of the sandpaper 48 to the resil-ient pad 46. The clamping device 66 includes a manip-ulative, over-center camming lever 68 pivotably sup-ported in a rigid post 70 formed integral with the backplate 44. The lever 68 is held in position, as best seen in FIG. 2, by a washer 72 situated under the resilient post 56. The lever 68 includes a power arm section 74 having a finger grip 76 at its rear and a camming arm section 78 offset laterally from the for-ward end of the power arm section 74.
The clamping device 66 also includes a reciproc-ably shiftable, resilient wire clamping member 80 having two connecting sections 82 perpendicular to and lS pivotably mounted on the camming arm section 78, and a pair of transverse members 84 each extending laterally from one of the connecting sections 82. A pair of angular legs 86 extend downwardly and inwardly toward the lever 68, and extending between the legs 86 par-allel to the groove 50 is a clamping section or bight 88.
Protuberances 90 are formed on the camming arm section 78 just inside the connecting sections 82 to center the connecting section 82 on the camming arm section 78. Extending upwardly from each of the longi-tudinally extending edges 50 are three arced projec-tions 92, 94 and 96 respectively, with spaces there-between to define a pair of gaps 98. The projections 92 and 94 include therein recesses 100 adjacent the gaps 98. The connecting sections 82, as further explained below, reciprocate horizontally in and are guided by thé recesses 100.
i !
I
.
.
. ~ :
.
:
~1~3~32 ,:
In using the clamping device 66, the operator takes one end of the sandpaper 48 and lays it over the groove 64, with the appropriate clamping device 66 in the release position, as seen by the dotted lines of FIG. 3. The camming lever 68 is then grasped by a fin-ger at the finger grip 76 and merely rotated to the over-center position shown by the solid lines in FIG.
3, thereby causing the wire clamping member 80 to move inwardly toward the groove 64 and grip the end of the sandpaper 48 with the clamping bight 80. The sandpaper 48 is then laid across the resilient pad 46 and around the other groove 64, and the same operation with the other clamping device 66 is repeated.
It can be seen that the camming lever 68 actuates the clamping member 80 to move in a horizontal plane without the use of any spring members. The clamping device 66 effectively locks the sandpaper 48 against possible release by vibratory forces developed durlng operation of the sander 10 by its being moved to the over-center position without the need for any locking tabs or projections. Clearly then, the clamping device 66 is one which is easily moved by the operator.
It will be understood that various changes in the details, materials, arrangements of parts and operating conditions which have been herein described and illus-trated in order to explain the nature o~ the invention may be made by those skilled in the art within the principles and scope of the invention.
!
:r ~
':
, '
Claims (7)
1. In a power driven, portable surface treating machine, a mechanism for clamping a surface treating material to the back plate of the surface treating machine, comprising:
a back plate having a clamp seat at one end there-of extending horizontally across substantially the entire length of said one end of said back plate; and a device for clamping one end of the surface treating material, said clamping device having a manip-ulative over-center camming lever pivotably supported on said back plate, said lever having a power arm section having a finger grip at its rear and a camming arm section offset laterally from the forward end of the power arm section, and a reciprocably shiftable, resilient wire clamping member having a connecting section substantially perpendicular to and pivotably mounted on the camming arm section of the lever and a clamping section fixedly secured to the connecting section and extending substantially parallel to the clamp seat in the back plate, whereby when the lever is moved to its over-center position the connecting sec-tion moves horizontally and the clamping section of the resilient wire clamping member aligns itself within the clamp seat to thereby clamp the end of the surface treating material.
a back plate having a clamp seat at one end there-of extending horizontally across substantially the entire length of said one end of said back plate; and a device for clamping one end of the surface treating material, said clamping device having a manip-ulative over-center camming lever pivotably supported on said back plate, said lever having a power arm section having a finger grip at its rear and a camming arm section offset laterally from the forward end of the power arm section, and a reciprocably shiftable, resilient wire clamping member having a connecting section substantially perpendicular to and pivotably mounted on the camming arm section of the lever and a clamping section fixedly secured to the connecting section and extending substantially parallel to the clamp seat in the back plate, whereby when the lever is moved to its over-center position the connecting sec-tion moves horizontally and the clamping section of the resilient wire clamping member aligns itself within the clamp seat to thereby clamp the end of the surface treating material.
2. The mechanism of Claim 1, wherein the back plate includes longitudinally extending edges at its ends, each of said edges being turned up along its length and having a groove therein extending hori-zontally through the length of the edge.
3. The mechanism of Claim 2, wherein the resil-ient wire clamping member includes two connecting sections spaced from each other.
4. The mechanism of Claim 3, further comprising a pair of transverse members each perpendicular to and extending laterally from each of the connecting sec-tions, and a pair of angular legs each extending down-wardly and inwardly from its respective transverse mem-ber to the clamping section.
5. The mechanism of Claim 4, wherein the camming arm section includes protuberances inside the connect-ing sections to center the connecting sections on the camming arm section.
6. The mechanism of Claim 5, additionally com-prising at least two spaced projections extending upwardly from each of the longitudinally extending edges, each of the two projections having a recess therein to receive the horizontally movable connecting sections of the resilient wire clamping member.
7. The mechanism of Claim 6, wherein the surface treating machine is an orbital sander.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US006,395 | 1979-01-25 | ||
| US06/006,395 US4216631A (en) | 1979-01-25 | 1979-01-25 | Paper clamping device for sanding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1103032A true CA1103032A (en) | 1981-06-16 |
Family
ID=21720654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA342,063A Expired CA1103032A (en) | 1979-01-25 | 1979-12-17 | Paper clamping device for sanding machine |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4216631A (en) |
| CA (1) | CA1103032A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4478010A (en) * | 1983-11-25 | 1984-10-23 | The Singer Company | In-line sander |
| US4484415A (en) * | 1983-11-25 | 1984-11-27 | The Singer Company | Sanding platen support for in-line sander |
| US4527360A (en) * | 1983-11-25 | 1985-07-09 | The Singer Company | Actuator for in-line sander |
| US4475316A (en) * | 1983-11-28 | 1984-10-09 | The Singer Company | Platen attachment for in-line sander |
| US4475317A (en) * | 1983-11-28 | 1984-10-09 | The Singer Company | Paper retainer for a sanding device |
| US6290587B1 (en) | 1995-10-20 | 2001-09-18 | Wilton Tool Company, Llc | Electrically-powered polisher |
| US5595532A (en) * | 1995-10-20 | 1997-01-21 | Waxing Corporation Of America, Inc. | Electrically-powered polisher |
| US6108916A (en) * | 1998-08-14 | 2000-08-29 | Milwaukee Electric Tool Corporation | Movable handle for a power tool |
| DE10046065A1 (en) | 2000-09-18 | 2002-03-28 | Hilti Ag | Hand-guided electric sanding tool has clamp device with clamp surface and cooperating pivoted clamp frame for securing sanding paper |
| DE10349275A1 (en) * | 2003-10-20 | 2005-05-19 | Robert Bosch Gmbh | Hand sanding tool |
| US7134951B1 (en) | 2005-12-28 | 2006-11-14 | Leon Jess M | Sheet holder for abrasive sheets |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3014316A (en) * | 1961-12-26 | Attys | ||
| US1320299A (en) * | 1919-10-28 | Sandpapee | ||
| US1522459A (en) * | 1923-12-20 | 1925-01-06 | Jackowitz John | Sandpapering and rubbing hand block |
| US2334173A (en) * | 1943-01-02 | 1943-11-16 | Roy J Champayne | Rubbing shoe |
| US2475476A (en) * | 1945-01-25 | 1949-07-05 | Roy J Champayne | Rubbing shoe |
| US2683337A (en) * | 1951-05-24 | 1954-07-13 | Speedway Mfg Company | Paper clamping device for sanding machines |
| US2893174A (en) * | 1956-03-07 | 1959-07-07 | Sunbeam Corp | Surface treating machine |
| US3136099A (en) * | 1963-03-29 | 1964-06-09 | Porter Co H K | Sanding machine with orbital and reciprocating motions |
| US3540161A (en) * | 1966-05-25 | 1970-11-17 | Wen Products Inc | Vibratory tool |
| US3822518A (en) * | 1972-09-07 | 1974-07-09 | Rodac Pneumatic Tools | Sanding shoe and clip therefor |
| US3848850A (en) * | 1973-02-02 | 1974-11-19 | Bemis & Sons Inc | Vehicle mounted hydraulic powered post puller |
| US3973362A (en) * | 1975-06-06 | 1976-08-10 | Chicago Pneumatic Tool Company | Sanding shoe |
| US4030254A (en) * | 1976-03-05 | 1977-06-21 | Chicago Pneumatic Tool Company | Sanding shoe with removable clamping jaw |
| US4077165A (en) * | 1976-11-26 | 1978-03-07 | Hutchins Alma A | Abrading tool clip with automatic take-up |
-
1979
- 1979-01-25 US US06/006,395 patent/US4216631A/en not_active Expired - Lifetime
- 1979-12-17 CA CA342,063A patent/CA1103032A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4216631A (en) | 1980-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1103032A (en) | Paper clamping device for sanding machine | |
| US5709595A (en) | Power tool for surface treatment | |
| US2885833A (en) | Hand held sanding and abraiding machine | |
| WO1998025723A1 (en) | Portable electrical power tool having a rare earth permanent magnet motor | |
| ATE153896T1 (en) | FLOOR SANDING MACHINE WITH TWO OPERATION MODES | |
| EP1604780B1 (en) | Sanding apparatus | |
| US2775076A (en) | Portable rubbing machine assembly | |
| US3540161A (en) | Vibratory tool | |
| US2722789A (en) | Rubbing attachment for portable rotary power units | |
| US3811160A (en) | Sander scraping attachment | |
| US2893174A (en) | Surface treating machine | |
| US2621453A (en) | Portable electric belt sanding machine | |
| US11872682B2 (en) | Portable power tool | |
| US5643063A (en) | Clamping mechanism for a powered sander | |
| JP2001212747A (en) | Motor-driven grip-type belt grinder | |
| JP3376463B2 (en) | Chainsaw | |
| CN218363903U (en) | Base for sheet type sander | |
| US2683337A (en) | Paper clamping device for sanding machines | |
| US4768310A (en) | Sander attachment | |
| JP2002192483A (en) | Hand-held power tool | |
| US20220168863A1 (en) | Orbital polisher | |
| AU707002B2 (en) | Apparatus for clamping sanding sheet for sander | |
| KR200251983Y1 (en) | Brake Disc Grinding Machine for Cars | |
| JPH1086046A (en) | Automatic grinder | |
| CN211565455U (en) | Grinding device convenient to it is fixed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |