US3905572A - Clamping mechanism for platform - Google Patents

Clamping mechanism for platform Download PDF

Info

Publication number
US3905572A
US3905572A US474973A US47497374A US3905572A US 3905572 A US3905572 A US 3905572A US 474973 A US474973 A US 474973A US 47497374 A US47497374 A US 47497374A US 3905572 A US3905572 A US 3905572A
Authority
US
United States
Prior art keywords
cotter
arm
screw bolt
cross
cross arm
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 - Lifetime
Application number
US474973A
Inventor
Akio Hikai
Yoshiyuki Kobayashi
Kazuyoshi Furuta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP263972U external-priority patent/JPS5152845Y2/ja
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to US474973A priority Critical patent/US3905572A/en
Application granted granted Critical
Publication of US3905572A publication Critical patent/US3905572A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C5/00—Equipment usable both on slipways and in dry docks
    • B63C5/02—Stagings; Scaffolding; Shores or struts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/06—Consoles; Brackets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/06—Consoles; Brackets
    • E04G5/062—Consoles; Brackets specially adapted for attachment to building walls

Definitions

  • Oujevolk I ABSTRACT In the clamping mechanism for a working platform, which is temporarily set up in the constructing of structures, e.g., a building, a hull or the like, an improved clamping mechanism wherein a cotter having counter teeth is so fitted as to be slidable between a flange of fixture of a clamp body, which is arranged along side wall of structure, and said body and a rotatable cross arm is further connected to said clamping body.
  • the setting-up and taking down of this mechanism is easily accomplished.
  • This invention relates to an improved clamping mechanism for a working platform and more particularly, to an arrangement which can be set up and taken down with ease as occasion demands.
  • a working platform is usually arranged along the wall.
  • a hook-shaped clamp is fitted on the flange of fixtures arranged along the Wall or a fan-shaped bracket is welded to the fixtures.
  • this invention is developed and characterized in that a cotter having counter teeth is so fitted as to be slidable between a flange of fixtures of a clamp body, which is arranged along the side wall of structures, and a clamping body, and a rotatable cross arm is further connected to said clamping body.
  • An object of this invention is to provide a clamping mechanism which is possible to be set up and taken down with ease.
  • Another object of this invention is to provide a claamping mechanism which can be adjusted to a proper and level of a working platform with ease.
  • FIG. 1 is a side view showing the whole of this invention mechanism.
  • FIG. 2 is a side view showing an assembly of clamping body, cotter and cross arm.
  • FIG. 3 is a plan of FIG. 2
  • FIG. 4 is a front view seen from the right side of FIG. 2.
  • FIG. 5 and FIG. 6 is a side view of other example based on this invention respectively.
  • FIG. 1 there is shown the mechanism of this invention mechanism.
  • Numeral 10 is an inclined side wall of structure. Accordingly, a fixture arranged along said wall is also inclined in the same manner.
  • a clamp body 1 To frame 11 of said fixture there is a clamp body 1, a clamp portion 2 of said body 1, a cross arm 3, a screwbolt 6 for a member having substantially the shape of a right triangle, i.e., cotter 14, another screw bolt 8 for said cross arm 3, and fixing holes 19 of arm 3 for another cross arm 13 on which planks 12 are placed.
  • the details of setting up the above elements are as shown in FIG. 2 and 4 and described hereinafter.
  • FIGS. 2, 3 and 4 assembling is shown.
  • a screw joint 5 and a receiver 5a disposed at right angles to each other to receive the corresponding sides of the cotter 14 are provided on said clamping body 1 and said cotter 14 is fitted therein.
  • Counter teeth 15 are formed on the side contact the cotter 14 with the frame 11.
  • the cotter 14 is supported so as to be slidable by a small screw 16 inserted into a long hole of receiver 5a.
  • cross arm 3 is further set up to said clamping body 1.
  • a shaft 4 is set up at the lower part of clamping body 1 and a bearing device 24 for said shaft 4 is assembled as a unit along the above screw joint 5.
  • the cross arm 3 is fitted to shaft 4.
  • One neck 9a of a boss 9 is supported in the middle portion of arm 3 and another neck of boss 9 is held by a plate 23 which is fixed to shaft 4 and opposed to said cross arm 3.
  • a screw bolt 8 is fitted to boss 9 and another boss 20 which is a point of support and then a nut and a cotter pin are disposed on the front end of screw bolt 8 so as not to come out. Said bolt 3 is held in said boss 20.
  • Another cross arm 13 is fixed to cross arm 3 through setting-up holes 19. Planks 12 are placed on cross arm 13 and a required working platform is formed. In this mechanism, when said screw bolt 8 is operated, said cross arm 3 is rotated with ease. Thus, the level of cross arm 13 can be readily adjusted. is disposed alongside the cross arm 3, the level is easily verified.
  • FIGS. 5 and 6 other examples based on this invention are shown.
  • FIG. 5 is an example wherein the position of shaft 4 and boss 20 is reversed as against that of FIG. 2. With the above formation, compressive force acts on the clamping mechanism, while that of FIG. 2 is tensile force.
  • a worm gear mechanism is employed in FIG. 6, that is, a one-fourth circular worm wheel 25 is attached to clamping body 1 by both shafts 4 and 30 and is coupled to a worm 26 of a bar 28 rotating by bearing 27. The removal of worm 26 is prevented by a stopper 29.
  • this mechanism when rotatable bar 20 is operated, cross arm 3 is rotated through worm wheel 25 and then worm 26. With such actions, the level of cross arm 13 (not shown in FIG. 6) can be readily adjusted.
  • a device for supporting a scaffolding workplank (12) comprising in combination:
  • a cross-arm (3) pivotally coupled to said outer supporting portion on a pivot shaft (4), a first adjustment screw bolt (8) away from said pivot shaft (4) connecting said body (1) and said cross-arm (3) for threaded adjusting of the position of said crossarm;
  • a third adjustment screw bolt (16) in said body disposed perpendicular to said second screw bolt (6) for engaging said cotter wedge (14);

Abstract

In the clamping mechanism for a working platform, which is temporarily set up in the constructing of structures, e.g., a building, a hull or the like, an improved clamping mechanism wherein a cotter having counter teeth is so fitted as to be slidable between a flange of fixture of a clamp body, which is arranged along side wall of structure, and said body and a rotatable cross arm is further connected to said clamping body. The setting-up and taking down of this mechanism is easily accomplished.

Description

United States Patent Hikai et al.
[4 1 Sept. 16, 1975 CLAMPING MECHANISM FOR PLATFORM Inventors: Akio I-Iikai; Yoshiyuki Kobayashi;
Kazuyoshi Furuta, all of Shizuoka, Japan Appl. No.1 474,973
Related U.S. Application Data Division of Ser. No. 319,767, Dec. 29, 1972, Pat. No. 3,837,606.
.[30] Foreign Application Priority Data Dec. 29, 1971 Japan 47-2639 [52] U.S. Cl. 248/242 [51] Int. Cl. E04G 3/02 [58] Field of Search 248/226 R, 246.4, 228, 248/242; 403/81, 291, 374; 182/82 [56] References Cited UNITED STATES PATENTS 544.216 8/1895 Drost 403/81 I l I I 7 I I I I I I I I I I5 I E Ila I I I 689,420 12/1901 Scammell.... 248/288 UX 1,375,225 4/1921 Marshall 248/242 1,740,364 12/1969 Dal Maso.... 248/226 R X 3,114,531 12/1963 Weber 248/242 FOREIGN PATENTS OR APPLICATIONS 302,951 12/ 1928 United Kingdom 248/242 279,992 11/1927 United Kingdom.... 248/242 20,476 5/1915 United Kingdom 248/242 Primary Examiner-William H. Schultz Attorney, Agent, or FirmGeorge B. Oujevolk I ABSTRACT In the clamping mechanism for a working platform, which is temporarily set up in the constructing of structures, e.g., a building, a hull or the like, an improved clamping mechanism wherein a cotter having counter teeth is so fitted as to be slidable between a flange of fixture of a clamp body, which is arranged along side wall of structure, and said body and a rotatable cross arm is further connected to said clamping body. The setting-up and taking down of this mechanism is easily accomplished.
1 Claim, 6 Drawing Figures PATENTED SEP 1 6 I975 SHEET 1 BF 3 PATENTEI] SEF] 6 L975 sum 3 n5 3 CLAMPING MECHANISM FOR PLATFORM This is a division of application Ser. No. 319,767 filed Dec. 29, 1972, now US. Pat. No. 3,837,606.
This invention relates to an improved clamping mechanism for a working platform and more particularly, to an arrangement which can be set up and taken down with ease as occasion demands.
When the inside and outside wall of structures, e.g. a building, a hull or the like, are cleaned or coated, a working platform is usually arranged along the wall. In such case, attempts have been made to support said platform. For example sometimes a hook-shaped clamp is fitted on the flange of fixtures arranged along the Wall or a fan-shaped bracket is welded to the fixtures. However, there are many difficulties on setting up and taking down or adjusting of the mechanism.
Therefore, this invention is developed and characterized in that a cotter having counter teeth is so fitted as to be slidable between a flange of fixtures of a clamp body, which is arranged along the side wall of structures, and a clamping body, and a rotatable cross arm is further connected to said clamping body.
An object of this invention is to provide a clamping mechanism which is possible to be set up and taken down with ease.
Another object of this invention is to provide a claamping mechanism which can be adjusted to a proper and level of a working platform with ease.
Other objects and advantages will be apparent from the following description and with the accompanying drawings in which:
FIG. 1 is a side view showing the whole of this invention mechanism.
FIG. 2 is a side view showing an assembly of clamping body, cotter and cross arm.
FIG. 3 is a plan of FIG. 2
FIG. 4 is a front view seen from the right side of FIG. 2.
FIG. 5 and FIG. 6 is a side view of other example based on this invention respectively.
Referring now to FIG. 1, there is shown the mechanism of this invention mechanism. Numeral 10 is an inclined side wall of structure. Accordingly, a fixture arranged along said wall is also inclined in the same manner. To frame 11 of said fixture there is a clamp body 1, a clamp portion 2 of said body 1, a cross arm 3, a screwbolt 6 for a member having substantially the shape of a right triangle, i.e., cotter 14, another screw bolt 8 for said cross arm 3, and fixing holes 19 of arm 3 for another cross arm 13 on which planks 12 are placed. The details of setting up the above elements are as shown in FIG. 2 and 4 and described hereinafter.
In FIGS. 2, 3 and 4, assembling is shown. First, a screw joint 5 and a receiver 5a disposed at right angles to each other to receive the corresponding sides of the cotter 14 are provided on said clamping body 1 and said cotter 14 is fitted therein. Counter teeth 15 are formed on the side contact the cotter 14 with the frame 11. The cotter 14 is supported so as to be slidable by a small screw 16 inserted into a long hole of receiver 5a. There is also another screw bolt disposed at right angles to the aforesaid small screw 16. This screw bolt 6 having double-nut 7 is included in said screw joint 5. When the screw bolt 16 is operated, cotter 14 is moved with ease and clamping body 1 is fixed to frame 11 at an optional position as the clamping portion 2 is fitted on a flange 1 1a of frame 1 1 If wall 10 is vertical, the position of cross arm 13 can be readjusted directly.
When wall 10 is inclined, cross arm 3 is further set up to said clamping body 1. In such a case, first, a shaft 4 is set up at the lower part of clamping body 1 and a bearing device 24 for said shaft 4 is assembled as a unit along the above screw joint 5. The cross arm 3 is fitted to shaft 4. One neck 9a of a boss 9 is supported in the middle portion of arm 3 and another neck of boss 9 is held by a plate 23 which is fixed to shaft 4 and opposed to said cross arm 3. A screw bolt 8 is fitted to boss 9 and another boss 20 which is a point of support and then a nut and a cotter pin are disposed on the front end of screw bolt 8 so as not to come out. Said bolt 3 is held in said boss 20. Another cross arm 13 is fixed to cross arm 3 through setting-up holes 19. Planks 12 are placed on cross arm 13 and a required working platform is formed. In this mechanism, when said screw bolt 8 is operated, said cross arm 3 is rotated with ease. Thus, the level of cross arm 13 can be readily adjusted. is disposed alongside the cross arm 3, the level is easily verified.
In FIGS. 5 and 6 other examples based on this invention are shown. FIG. 5 is an example wherein the position of shaft 4 and boss 20 is reversed as against that of FIG. 2. With the above formation, compressive force acts on the clamping mechanism, while that of FIG. 2 is tensile force.
A worm gear mechanism is employed in FIG. 6, that is, a one-fourth circular worm wheel 25 is attached to clamping body 1 by both shafts 4 and 30 and is coupled to a worm 26 of a bar 28 rotating by bearing 27. The removal of worm 26 is prevented by a stopper 29. In this mechanism, when rotatable bar 20 is operated, cross arm 3 is rotated through worm wheel 25 and then worm 26. With such actions, the level of cross arm 13 (not shown in FIG. 6) can be readily adjusted.
What is claimed is:
l. A device for supporting a scaffolding workplank (12) comprising in combination:
a. a supporting body (1) with an outer supporting portion and an inner clamp portion (2) for clamping onto a flange (11a) a lower cotter receiver aperture (5a) in said body;
. a cross-arm (3) pivotally coupled to said outer supporting portion on a pivot shaft (4), a first adjustment screw bolt (8) away from said pivot shaft (4) connecting said body (1) and said cross-arm (3) for threaded adjusting of the position of said crossarm;
c. a cotter wedge (14) in said cotter receiver aperture (5a) with an elongated outer engaging side having teeth (15) thereon for engaging a structure wall and a second adjustment screw bolt (6) connected to said body and said cotter for threaded adjusting of the contact of said cotter teeth (15) with the structure wall;
. a third adjustment screw bolt (16) in said body disposed perpendicular to said second screw bolt (6) for engaging said cotter wedge (14); and,
e. a first and second worm wheels (25, 26) in engagement with said body, and grip means (28) to turn said second worm Wheel (26), the rotation of said grip means causing rotation of said first worm wheel (25) pivoting said cross-arm (3) around said pivot shaft (4).

Claims (1)

1. A device for supporting a scaffolding workplank (12) comprising in combination: a. a supporting body (1) with an outer supporting portion and an inner clamp portion (2) for clamping onto a flange (11a) a lower cotter receiver aperture (5a) in said body; b. a cross-arm (3) pivotally coupled to said outer supporting portion on a pivot shaft (4), a first adjustment screw bolt (8) away from said pivot shaft (4) connecting said body (1) and said cross-arm (3) for threaded adjusting of the position of said cross-arm; c. a cotter wedge (14) in said cotter receiver aperture (5a) with an elongated outer engaging side having teeth (15) thereon for engaging a structure wall and a second adjustment screw bolt (6) connected to said body and said cotter for threaded adjusting of the contact of said cotter teeth (15) with the structure wall; d. a third adjustment screw bolt (16) in said body disposed perpendicular to said second screw bolt (6) for engaging said cotter wedge (14); and, e. a first and second worm wheels (25, 26) in engagement with said body, and grip means (28) to turn said second worm wheel (26), the rotation of said grip means causing rotation of said first worm wheel (25) pivoting said cross-arm (3) around said pivot shaft (4).
US474973A 1971-12-29 1974-05-31 Clamping mechanism for platform Expired - Lifetime US3905572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US474973A US3905572A (en) 1971-12-29 1974-05-31 Clamping mechanism for platform

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP263972U JPS5152845Y2 (en) 1971-12-29 1971-12-29
US474973A US3905572A (en) 1971-12-29 1974-05-31 Clamping mechanism for platform

Publications (1)

Publication Number Publication Date
US3905572A true US3905572A (en) 1975-09-16

Family

ID=26336077

Family Applications (1)

Application Number Title Priority Date Filing Date
US474973A Expired - Lifetime US3905572A (en) 1971-12-29 1974-05-31 Clamping mechanism for platform

Country Status (1)

Country Link
US (1) US3905572A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205815A (en) * 1978-11-16 1980-06-03 Roblin Industries, Inc. Shelf bracket, shelf bracket-stud combination and shelf bracket-clip combination
US4382571A (en) * 1980-12-22 1983-05-10 Horen David J Scaffold bracket and hanger therefor
US5076648A (en) * 1989-11-02 1991-12-31 Makainai Jesse K Counter support
US5118060A (en) * 1990-10-09 1992-06-02 Spronken John R Adjustable bracket for building construction
EP1249549A1 (en) * 2001-04-11 2002-10-16 Ruredil S.p.A. Rotary support device for prefabricated elements
US8955288B1 (en) * 2013-05-06 2015-02-17 Timothy Snyder Low profile adjustable lift bracket
US20160243658A1 (en) * 2015-02-25 2016-08-25 Keith Allan Greenawalt Welding fixture apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US544216A (en) * 1895-08-06 Henry droste
US689420A (en) * 1900-12-10 1901-12-24 Charles H Scammell Hanger apparatus.
US1375225A (en) * 1920-11-26 1921-04-19 Marshall Guy Seat construction for farming-machines
US1740364A (en) * 1928-07-17 1929-12-17 Maso Joseph Dal Plant support
US3114531A (en) * 1959-12-04 1963-12-17 Weber Albert Shelf support

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US544216A (en) * 1895-08-06 Henry droste
US689420A (en) * 1900-12-10 1901-12-24 Charles H Scammell Hanger apparatus.
US1375225A (en) * 1920-11-26 1921-04-19 Marshall Guy Seat construction for farming-machines
US1740364A (en) * 1928-07-17 1929-12-17 Maso Joseph Dal Plant support
US3114531A (en) * 1959-12-04 1963-12-17 Weber Albert Shelf support

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205815A (en) * 1978-11-16 1980-06-03 Roblin Industries, Inc. Shelf bracket, shelf bracket-stud combination and shelf bracket-clip combination
US4382571A (en) * 1980-12-22 1983-05-10 Horen David J Scaffold bracket and hanger therefor
US5076648A (en) * 1989-11-02 1991-12-31 Makainai Jesse K Counter support
US5118060A (en) * 1990-10-09 1992-06-02 Spronken John R Adjustable bracket for building construction
EP1249549A1 (en) * 2001-04-11 2002-10-16 Ruredil S.p.A. Rotary support device for prefabricated elements
US8955288B1 (en) * 2013-05-06 2015-02-17 Timothy Snyder Low profile adjustable lift bracket
US20160243658A1 (en) * 2015-02-25 2016-08-25 Keith Allan Greenawalt Welding fixture apparatus
US9586295B2 (en) * 2015-02-25 2017-03-07 Keith Allan Greenawalt Welding fixture apparatus

Similar Documents

Publication Publication Date Title
US4782635A (en) Connector for hanging panels to a building frame
US3905572A (en) Clamping mechanism for platform
US3837606A (en) Clamping mechanism for platform
CN112360152A (en) Template anchor clamps based on building engineering construction usefulness
US3771757A (en) Self-contained, articulated, outside corner-forming device for a concrete wall form
JPH09184367A (en) Sash fitting
US3353420A (en) Drive tightener
JPH0317987B2 (en)
JPS5874299A (en) Inverting device for welding
EP0136906B1 (en) Arch support device
JPS625717B2 (en)
JPS59666Y2 (en) Mounting bracket for tension insulator device
US2808801A (en) Working holder for use in welding
KR200234616Y1 (en) A insert hanger set
JP3200266B2 (en) Deck plate beam fixing bracket
SU779551A1 (en) Erection device
JPS6346216Y2 (en)
JPS634146Y2 (en)
JPS6019856Y2 (en) gondola
JPH04155Y2 (en)
JPH028992Y2 (en)
JPS6312946Y2 (en)
JP2520314Y2 (en) Guide device for wire saw
JP2002005134A (en) Connecting fixture of beam
SU731108A1 (en) Fixing arrangement