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Publication numberUS2477020 A
Publication typeGrant
Publication date26 Jul 1949
Filing date28 Apr 1945
Priority date28 Apr 1945
Publication numberUS 2477020 A, US 2477020A, US-A-2477020, US2477020 A, US2477020A
InventorsSant Victor H Van
Original AssigneeStandard Telephones Cables Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bending machine
US 2477020 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

'// Imn? Q// /f/ July 26, @4% v. H. VAN SANT BENDING MACHINE Filed April 28, 1945 2 Sheets-Sheet 1 VICTOR H.VAN .SANT

Filed April 28, 1945 V. H. VAN SANT BENDING MACHINE 2 Sheets-Sheet 2 2.2 Il', H' 1.3

l2 V i 16 14 Htl. ML

I 26 I 24 i .E29 36 g5 El' 14 l5 50 i *l' 41.9 E C me? Patented July 26, 1949 UNITED STATES PATENT OFFICE BEN DlN G MACHINE Victor H. Van Sant, Newark, N. J., assigner to Federal Telephone and Radio Corporation, New

York, N. Y., a corporation of ADelaware vApplication April 2,8, 1945, Serial No. 590,887

15 Claims. l

Ihis invention relates to Ia machine for bending rods, wire and simi-lar sections, and particularly, for example, lead-in wire for vacuum tubes.

It -is an object of the invention to provide a machine for simultaneously producing a double bend in a rod or wire by means of a machine having a double slide of which one slide is mov able in one direction and the other is movable in a direction at right angles thereto. A further object of the -invention resides in the provision of a connecting link pivotally secured to one of the slides to exert a pull thereon at an angle to the movements of yboth slides. Another object resides in the provision of meansto' heat, preferably by electr-ic resistance, and before the bending operation, that part of the wire which is to be bent.

The machine thus aims to provide a slide which is so mounted that it is capable o f moving either in -a vertical or horizontal direction or both, or at any Yangle determined by the desired bend to be imparted in the rod. Another object resides in the provision of means -for adjusting the extent of movement of the slides.

Further objects will lie-apparent from the following description when considered in connection with the accompanying drawings in which,

Figure l is la planview of the wire bending machine showing the `position of the parts just before' the bending operation,

Fig. 2 is a plan view ofthe machine showing the position .of the parts after completion of the bending operation,

Fig. 3 -is a cross Asectional view of the machine taken yon li-neV 3 3 of Fig. `1 -in the direction of the arrows, and

Fig. 4 is -a cross .sectional View oi the machine taken' on line 4 4 of Fig. 1in the direction of the arrows.

The -nfachi-ne illustrated by way of example includes -a base frame or plate `I having a square or rectangular slidewayy provided therein de-v ned by side faces -or surfaces |2 Vand |3. The base frame has a pair of upstanding lugs I4, one adjacent each side vface `|12 and each lug has a threaded `hole thereinetoreceive adjustable stop bolts I5 andl6, the purpose -of Awhich will A.be explained.

Ay rectangular mai-nslideplate or member Il is slida-bly mounted in the slideway E|| -in the di'- rection of the arrows and guided by the side faces II3. AsFWill 'be .seen Vlfrom Figs. l and 2, the vslidevplate |-1 has alength rvjustsufiicient-to contact `the side iaces lf3 but #the Vwidth is narrower than the length-of the vfaces iI3 soA that 55 2 the slide plate will reciprocate from right to left and Vice versa toward the faces |'2. lhe slide plate is provided with a rectangular lslideway i8 defined by side faces or surfaces I3 and and this slideway I8 is provided with an auxiliary slide plate or member 2|. The `slide plate 2| is slideble in the diregten ,Qf .the err-,WS which is at right angles relative to the reciproeating movement of the slide plate Ifl and such sliding movement is guided by the side faces 29 toward the side faces |9.

An adjustable stop -bolt 2'2 is threaded in the slide plate ll against which the slide plate 2| abuts during the bending operation.

The slide plate 2| i s provided with a pivot pin 23 to which a connecting link 24 is secured which operates the slide plates. This linl; has one en d of the spring 25 secured thereto by p in 26, the other end of the spring being secured to a 21 secured in the base frame |0. YrPhe slide plate 2| is also provided with a pair of clamping jaws 28 and -2 9`of which jaw 28 is stationary but jaw 29 is slidable in a slot 30. A cam 3| contacts the jaw -29 to adjust it against the work and thus securely hold the work between the jaws.

Another pair of clamping jaws -32 and 33 are mounted on the base yframe I0 of which jaw 32 is stationary but jaw 33 Yis slidable in a slot 34. vA. cam 35 is pivotally mounted to adjust the jaw 33 toward the work to thereby clamp thev Work between the jaws.

On the drawings the work is indicated by a wire or rod 36 which is clamped in the jaws 28, 29, 3 2 and 33. In o rder to lprovide for the resistance heating of ythe rod 36 in its length -be-l tween the jaws, the latter are suitably insulated from each other and from the frame |0 and slides |f| and 2| and the rod may also be linsulated by any suitable means such as an insulation s trip, not shown, provided under the wire and on the parts of the machine. Wires 3l and 38 carry electric current to the jaws -23 and 3 2, the latter of which are preferably made of copper` The machine operates as follows:

'The wire 38 is clamped between both jaws' 28, 29 and 32, 33 by means `of vthe cams 3| and 35 to lhold the wire securely in the machine. The electric current is then turned on by any suitable switch, not shown, toheat vthe wire by resistance in vthat portion of its length which'isbetween the jaws and which is to be bent. After heating the wire to a desired degree, such for instance where it becomes almose incandescent, theconnecting link 24 isy pulled in the direction indi-v cated `by its arrow, by means of a pneumaticV plunger, not shown, whereby the jaws 28 and 29 are moved relative to the jaws 32 and 33. Both slides |1 and 2| may move simultaneously in the direction indicated by their arrows at right angles relative to each other or the auxiliary slide 2| may move rst until its abuts against the stop bolt 22 and then the slide plate moves to the left until it abuts against the stop bolt I6. Thus when slide 2| moves rst and then slide the movement of slide 2| determines the 01T- set in the wire. Furthermore the slide 2| is capable of moving either vertically or horizontally or at any angle determined by the desired bend in the rod. 1

The duration of the heating time for the rod 36 may be controlled by a time switch, not shown, and the time switch in turn may operate the pneumatic plunger for the link 24 to produce the bending operation.

After the bending operation, Fig. 2, the wire is removed from the machine by operation of the cams 3| and 35 and the spring 25 will move the parts back to the initial position shown in Fig. 1.

The machine is of course capable of various modifications within the scope of the invention and the appended claims. For instance the slides I1 and 2| may have any desired thickness and both sli-des may have the same thickness so that the slide 2| will contact the surface of the slideway It would also be possible to provide the slideways and |8 and the slides with tongue and groove slide surfaces in order to `securely maintain the parts in their working positions during the bending operation.

I claim as my invention:

1. A machine for bending wire and the like comprising a base frame having a slideway therein, a .main slide plate mounted in said slide- Way and having a slideway therein, an auxiliary slide plate mounted in the slideway of the main slide plate, a pair of jaws mounted on the base frame, a pair of jaws mounted on the auxiliary slide plate, said pairs of jaws being adapted to clamp the wire on the machine, and single means connected to the auxiliary slide plate to reciprocate both slide plates in their respective slide- Ways during the bending operation.

2. A machine for bending wire and the like comprising a base frame having a slideway therein, a main slide plate mounted in said slideway and having a slideway therein, an auxiliary slide plate mounted in the slideway of the main slide plate, a pair of jaws mounted on the base frame, a pair of jaws mounted on the auxiliary slide plate, said pairs of jaws being adapted to clamp the wire on the machine, and one jaw of each pair being movable toward and away from its respective other jaw, means for clamping the movable jaw against the wire, and single means connected to the auxiliary slide plate to reciprocate both slide plates in their respective slideways during the bending operation.

3. A machine for bending wire and the like comprising a base frame having a slideway therein, a main slide plate mounted in said slideway and having a slideway therein, an auxiliary slide plate mounted in the slideway of the main slide plate, a pair of jaws mounted on the base frame, a pair of jaws mounted on the auxiliary slide plate, said pairs of jaws being adapted to clamp the wire on the machine, and one jaw of each pair being movable toward and away from its respective other jaw, means for clamping the movable jaw against the wire, single means connected to the auxiliary slide plate to reciprocate both slide plates in their respective slideways during the bending operation, and spring means connected to the slide reciprocating means and the base frame to return the slides to their initial positions after the bending operation.

4. A machine for bending wire and the like comprising a base frame having a slideway therein, a main slide plate-mounted in said slideway and having a slideway therein, an auxiliary slide plate mounted in the slideway of the main slide plate, a pair of jaws mounted on the base frame, a pair of jaws mounted on the auxiliary slide plate, said pairs of jaws being adapted to clamp the wire on the machine, and one jaw of each pair being movable toward and away from its respective other jaw,'cam operated means for clamping the movable jaw against the wire, and single means connected to the auxiliary slide plate to reciprocate both slide plates in their respective slideways during the bending operation.

5. A machine for bending wire and the like comprising a base frame, a first slide member slidably mounted on said frame adapted to move parallel to the axis of the material to be bent, a second slide member slidably mounted on said ilrst slide member, adapted to move thereon in a direction perpendicular to the movement of said iirst slide member, means attached respectively to said base frame and said second slide member to clamp the material to be bent, and single means to reciprocate said slide members, said rst slide member regulating the angle of bend and said second slide member regulating the offset of the material to be bent.

6. A machine for bending wire and the like as claimed in claim 5, wherein said single means to reciprocate said slide members is pivotally connected to said second slide member.

'7. A machine for bending wire and the like as claimed in claim 6, wherein said single means to reciprocate said slide members comprises a single link connected to said second slide member movable at an angle relative to the movements of both slide members to reciprocate the latter during the bending operation.

8. A machine for bending wire and the like comprising a base frame having a slideway therein, a main slide plate mounted in said slideway and having a slideway therein, an auxiliary slide plate mounted in the slideway of the main slide plate, a pair of jaws mounted on the base frame, a pair of jaws mounted on the auxiliary slide plate, said pairs of jaws being adapted to clamp the wire on the machine, single means connected. to the auxiliary slide plate to reciprocate both slide plates in their respective slideways during the bending operation, and stop bolts mounted on the frame to limit the movement of the main slide plate in its slideway this limitation of movement being of accurately predetermined degree.

9. A machine for bending wire and the like comprising a base frame having a slideway therein, a main slide plate mounted in said slideway and having a slideway therein, an auxiliary slide plate mounted in the slideway of the main slide plate, a pair of jaws mounted on the base frame, a pair of jaws mounted on the auxiliary slide plate, said pairs of jaws being adapted to clamp the Wire on the machine, single means connected to the auxiliary slide plate to reciprocate both slide plates in their respective slideways during the bending operation, stop bolts mounted on the frame to limit the movement of the main slide plate in its slideway, and a stop bolt in the main slide plate to limit the movement of the auxiliary slide plate in the main slide plate said stop bolts on said frame and said main slide plate being accurately and continuously adjustable to the end that said wire and the like may be doubly bent with accuracy when said wire and the like has a short length.

10. A machine for bending wire and the like comprising a base frame having a rectangular slideway therein and a pair of clamping jaws, a main slide plate contacting two opposite sides of the slideway to slide thereon in one direction with clearance on the two other opposite sides of the slideway, said slide plate having a rectangular slideway therein, an auxiliary slide plate slidably mounted in the slideway of the main slide plate in contact with two opposite sides thereof and in a direction at right angles relative to the movement of the main slide plate, said auxiliary slide plate having a pair of clamping jaws therein which with the first-mentioned pair of clamping jaws secure the wire in the machine, and single means for exerting a pulling force on the auxiliary slide plate at an angle relative to the directions of movement of both slide plates during the bending operation.

11. A machine according to claim 10, in which the pulling force means is in the form of a single connecting link pivotally secured to the auxiliary slide plate.

12. A machine for bending wire and the like comprising a base member having a slideway therein, a rst slide plate movably mounted in the slideway of said base member, said slide plate having a slideway therein and being adapted to move parallel to the axis of the material to be bent; a second slideplate movably mounted in the slideway of said first slide plate and being adapted to move in a direction at right angles to the direction of the movement of said first slideplate, and means attached respectively to said base member and said second slideplate, for hold ing a wire on said machine and for maintaining the end portions of the wire in xed angular relation to said base and said second slide member, and single means for causing movement of said rst slideplate to regulate the angle of bend, and movement of said second slideplate to regulate the oset of the material to be bent.

13. A machine for bending wire and the like as claimed in claim 12, wherein said single means for causing movement of said slideplates exerts a pulling force on one of said slideplates in an angular direction relative to the directions of movement of said slideplates for the bending operation.

14. A machine for bending wire and the like as claimed in claim 12, wherein a plurality of stop members are adjustably mounted in the base member to adjust and limit the movement of said rst slideplate.

15. A machine for bending wire and the like, as claimed in claim 12, wherein a stop member is adjustably mounted in the first slideplate to adjust and limit the movement of said second slideplate.

VICTOR H. VAN SANT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 382,426 Howe May 8, 1888 458,115 Thomson Aug. 18, 1891 966,046 Noonan Aug. 2, 1910 1,010,470 Wilson Dec. 5, 1911 1,237,371 Murray Aug. 21, 1917 FOREIGN PATENTS Number Country Date 175,153 Great Britain Feb. 16, 1922

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US382426 *20 Feb 18888 May 1888James ACrank-bending machine
US458115 *21 May 188618 Aug 1891 Method of electric bending and straightening
US966046 *3 Dec 19092 Aug 1910Michael H NoonanMowing-machine.
US1010470 *16 Jul 19105 Dec 1911Robert C WilsonMachine for bending reinforcing-rods.
US1237371 *5 May 191721 Aug 1917Thomas E Murray JrApparatus for bending metal plates.
GB175153A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2555695 *13 May 19495 Jun 1951Massey Harris Co LtdMethod and apparatus for forming crankshafts
US2886092 *12 May 195412 May 1959Lawrence JelinekApparatus for forming joggles
US2902076 *26 Feb 19571 Sep 1959Frank VitelliBending machines
US2933123 *30 Oct 195619 Apr 1960Calumet & HeclaDevice for producing off-center necked ends on spun tubing
US3000423 *13 Aug 195819 Sep 1961Konink Nl Vliegtuigenfabriek FMachine for joggling shaped metal or metal profiles
US3064708 *29 Jul 195920 Nov 1962Western Electric CoMaterial forming apparatus
US3150707 *27 Apr 196129 Sep 1964Pat HowellApparatus for making metal building and building elements
US3230755 *25 Oct 196125 Jan 1966Stuart & Co Inc C HApparatus for bending material
US3388726 *26 Jun 196418 Jun 1968Hamilton CoWire stretcher and straightener
US3856057 *10 Jul 197224 Dec 1974Robertshaw Controls CoWinding apparatus
US4141260 *23 Dec 197627 Feb 1979Millo BertiniApparatus for making saw blades
US8082769 *14 Sep 200727 Dec 2011Orametrix, Inc.Robot and method for bending orthodontic archwires and other medical devices
US20080153053 *14 Sep 200726 Jun 2008Orametrix, Inc.Robot and method for bending orthodontic archwires and other medical devices
DE1108048B *14 Aug 195831 May 1961Konink Nl Vliegtuigen FabriekEinrichtung zum Durchsetzen eines Metall-profils
DE4002364A1 *25 Jan 199022 Nov 1990Konrad MannsBending esp. of metallic rods, tubes or profiles - involves softening of metal by resistance heating current supplied through fixing clamp and sliding torsion device
Classifications
U.S. Classification72/295, 219/153, 72/342.1
International ClassificationB21F1/00
Cooperative ClassificationB21F1/00
European ClassificationB21F1/00