US2430899A - Pivoted bender with adjustable stops - Google Patents

Description

' Nov. 18', 1947. E. WALLACE 2,430,899

1 PIVOTED BENDER- WITH ADJUSTABLE STOPS Filed Aug. '2, 1945 INVENTOR.

Eve/eff Wad/26c fluiLLCL M A Wale/v5 Y. A

Patented Nov. 18, 1947 UNlTED STATES PATENT OFFICE PIVOTED BENDER WITH ADJUSTABLE STOPS '1 Claim.

This invention relates to a bending machine.

An object of this invention is to provide a machine which will quickly and easily bend wire, strip metal or other material of varying thickness on different radii.

Further objects and advantages of this invention, as well as its construction, arrangement and operation, will be apparent from the following description and claims in connection with the accompanying drawings in which Figure 1 is an isometric view of the bending machine.

Figure 2 is a fragmentary view in vertical section on the line 22 of Figure 1.

Figure 3 is a fragmentary view in vertical section of the bending machine, showing the handle stop, and taken along the line 3-3 of Fig. 1.

Figure 4 is an isometric view of a modification of the bending element.

Fig. 5 is an isometric fragmentary view showing the guide plate and associated parts.

Referring to the drawings in detail, Figure 1 shows a preferred embodiment of the invention wherein a rectangular base is indicated by the reference numeral ID. Recess H is provided at the top of base iii and receives a circular disc I2 which has sockets I3 in the face thereof. The sockets i3 are located one on the axis of disc l2 and others at varying radii from the axis. Sockets i3 receive cylindrical forming elements l4 which serve a purpose to be later described.

Integral with the bottom of disc I2 is a spindle i5 which passes through the bore l6 leading from the recess H to the bottom of base It. Spindle i5 has a square portion 23 which receives the square hole ll of arm IS, the arm l8 being held on the spindle i5 by means of a washer l9 and a nut 253 which is received on the threaded portion 2i. The free end of arm l8 threadedly receives a handle 22. A bore 24 is provided in the disc i2 and spindle i5 to allow the insertion of a tool for tapping out the axially located forming element I4.

Extending across the base I8 is a slot 3| of inverted T-shape in cross section. The T-bolt :32 is slidably received by the slot 3| and passes through a slot 33 in a horizontal plate 34, the horizontal plate 3d being integral with a vertical guide plate 35. A washer and nut 31 are received by the T-bolt 32 to hold the guide plate 35 in fixed position.

Mounted on the rear edge 30 of base ID as by a drive fit, are two cylindrical supports 40 which also pass through bores 4| of cylindrical guide bar 12, the cylindrical guide bar 42 being positioned amended April 30, 1928; 370 0. G. 75 7) on cylindrical supports 40 by means of set screws 43. Slidably mounted on guide bar 42 is a rectangular slide 44, of sufficient width to contact and slide along the rear edge 3|] of base Ill, 2. collar 45 integral with the slide 44 and mounted on a guide bar 42 being utilized to achieve the sliding relationship and a set screw 48 being used to fix the position of slide 44. Mounted on the slide 44 as by a screw 46 is a rectangular stop plate 41 so positioned as to contact the top of base I0.

Limitation of the swing of arm i8 is achieved by means of angle member 50 positioned below the base I!) by means of bolt 5|, washers 52 and nut 53, the bolt 5| being received in a slot 54 of the angle member 55. The bolt 5| may be received by any of the bores 55 to increase the range of positions for the angle member 50.

In the operation of the device, wire or strip metal is inserted between the cylindrical forming elements I4 and moved up to the stop plate 41. The guide plate 35 is then positioned to contact the wire or strip metal and fastened in place by means of nut 31. Handle 22 is then used to rotate the disc I2 and forming elements l4 thereon to achieve the desired bending in the material. It is to be understood that stop plate i! is adjustable as desired along guide bar 42 to locate the bend in the material and that the adjustable positioning of angle member 5!! by means of slot 54 or utilization of any of the bores 55 will determine the linear extent of the bend.

A modification of the bending element is illustrated in Figure 4 and comprises a disc having a slot GI and a spindle 62 for insertion in the axial socket I3, a screw 63 for reception by tapped hole 64 in disc l2 being utilized to hold it in fixed position. This forming element is used in the manufacture of lock rings. In use, wire is inserted into the slot GI and the disc l2 and forming element 60 rotated until nearly a complete circle is made. In this operation, the guide plate 35 is positioned as necessary.

It is to be understood that various modifications and changes may be made in this invention without departing from the spirit and scope thereof as set forth in the claim.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

What is claimed is:

A bending machine comprising a flat rectangular base, a circular recess in the top of said 3 base, a circular disc in said recess, a socket in said disc at its center, other sockets in said disc at varying distances from said center, a cylindrical bending element in said central socket, a cylindrical bending element in another of said sockets, a bore in said base from the bottom of said base to said recess, a spindle integral with said disc and extending through said bore, a portion of said spindle below said base being square, an arm having a square hole, said arm being mounted on the square portion of said spindle, means to fix said arm on said square portion, a handle on the free end of said arm, a cylindrical bar mounted parallel to the rear edge of said base, a member slidably mounted on said bar, means to adjustably position said member along said bar,- said member being of sufiicient width to contact the rear edge of said base, a stop plate mounted on said member and in contact with the top of said base, an inverted T-slot extending across said base, a vertical guide plate parallel to the long edges of said base, a flat plate extending from the rear of said guide plate, said flat plate having a slot parallel to the rear edge of said base, a T-bolt in said T-slot extending through said slot, a nut on said T-bolt, a series of bores in said base, an L-shaped member below said base, and means to bolt the long leg of said L-shaped member in one of the bores of said series.

EVERETT WALLACE.

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

UNITED STATES PATENTS Number Name Date 1,020,582 Straus, Jr Mar. 19, 1912 1,206,114 Jameton Nov. 28. 1916

Images