US2269914A

US2269914A - Metal shearing device

Info

Publication number: US2269914A
Authority: US
Inventors: Daniel J Parker
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-03-06
Filing date: 1941-03-06
Publication date: 1942-01-13
Anticipated expiration: 1959-01-13

Description

Jan. 13, 1942. D, PARKER 2,269,914

METAL SHEARING DEVICE Filed March 6, 1941 3 Sheets-Sheet 1 "IIIIIIII IIIIIIIIIII 23 I Lgi IIIIIIIIIIIIIIIF V Attorney Jan. 13, 1942.

D. J. PARKER METAL SHEARING DEVICE Filed March 6, 1941 s Sheets-Sheet s Inventor a In'e/ J 7 4 i-ler @Mmh I Att orney Patented Jan. 13, 1942 UNITED STATES PATENT OFFICE METAL G DEVICE Daniel. J. Parker, mag nta; Application March 6, 1941, Serial No. 382,06l

2 Claims. (Cl.164-56) This invention relates to' new and useful improvements in metal cutting apparatus and more particularly to a device for cutting metal strips, plates and like work as well as shearing bolts.

The principal object of the present invention is to provide a simple and inexpensive metal cutting device operated by hydraulic pressure.

Another important object of the invention is to provide a simple and inexpensive hydraulically operated metal cutting device which can be operated with but little manual effort.

Other objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a side elevational View of the apparatus.

Figure 2 is a vertical sectional View through the cutter unit.

Figure 3 is a top plan View of the structure shown in Figure 2.

Figure 4 is a vertical sectional view taken substantially on the line 44 of Figure 2.

Figure 5 is a horizontal sectional view taken substantially on the line 5--5 of Figure 1.

Figure 6 is a perspective View of a spacially shaped collar blade.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the cutter unit generally referred to by numeral 5 consists of a frame made up of a base member '6, a bridge member I, an end member 8 integrally connecting one end of the base 6 with the bridge member 1, and a swingable end member 9. The end member 9 is hingedly connected as at It to the remaining end of the base member 6 and has an opening II at the upper end portion thereof for receiving the reduced free end portion l2 of the bridge member 7. A retaining screw 13 is feedable through the upper portion of the swingable end member 9 and may be operated by a knob or the like M at the upper end thereof to screw the retaining screw I 3 against the said reduced end portion l2 of the bridge member I to prevent outward swinging of the end member 9.

The fixed end member 8 has a guide groove l5 at the inner side thereof and the swingable end member 9 has a like guide groove it. These guide grooves serve to receive the reduced end portions I1 and 18, respectively, of a follower l9 which has an internally threaded socket 20 at the intermediate portion thereof. This follower l9 has a depending flange 2! to which a blade 22 is attached by screws 23.

An internally threaded boss 24 is provided at the intermediate portion of the bridge member i, rising from the top of the bridge member I and this boss receives the lower externally threaded end portion of a cylinder 25 in which an elongated plunger 26 operates. This plunger 2t is operative through an opening ll in the bridge member I and has its lower end threaded as at 28 for disposition in the internally threaded socket 20. Thus the follower I9 is carried by the plunger 25 and the plunger 26 operates within the hydraulic cylinder 25. A cap 29 is provided for the upper end of the cylinder 25 and from this end portion of the cylinder 25 a conduit or tube 3?] extends to a conventional hydraulic pump 3! which has a manual operating lever 32. Any conventional type of hydraulic pump having the proper capacity will be found suitable for use in conjunction with the unit 5. The member which carries the blade 22 can be raised in any suitable manner, after the fluid in the top of the cylinder 25 has been returned to the hydraulic pump 3!, such as by lifting the member by hand or by a crow bar or any other suitable means.

As is shown in Figure 4, a flange 33 rises from the base member 6 and a beveled blade 34 is attached thereto by screws or the like 35.

In the operation of the device, the lever 32 of the pump 31 is operated. Hydraulic pressure occurs in the cylinder 25, forcing the plunger 26 downwardly with considerable force, for shearing off bars, strips of metal and various other metallic work.

For shearing off bolts from flat faced work, it may be desirable to use blades such as are shown in Figure 6. This blade which is generally referred to by numeral 36 consists of an elongated member 31 having a laterally offset portion 38 and a depending blade edge 39. This offset type of blade can be used on the flanges 2| and 33 so as to permit avoidance of the follower I9 and flange 33 by the flat faced work on which the bolts are to be sheared.

Obviously, the end member 9 can be swung downwardly to permit certain work such as rings, rims and the like to be partly inserted into the frame.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. A cutting device of the class described comprising a base member, a stationary knife on said base member, a top member, a vertically arranged end member connecting one end of the base member to one end of the top member and said end member having a longitudinally extending guide groove on its irmer edge, a second end member pivotally connected at its lower end to the opposite end of the base member, means for detachably connecting the upper end of the second end member to the opposite end of the top member, said second end member having a longitudinally extending guide groove in its inner edge, a knife carrying member having its ends entering said grooves, a plunger connected with the knife carrying member and passing through a hole in the top member, an upright cylinder carried by the top member and receiving the plunger and means for introducing top member, means associated with the plunger for forcing the same downwardly and a knife connected with the follower and having a flange fastened to the follower, 8i downwardly and outwardly sloping intermediate portion connected with the flange and a depending part connected with the outer edge of the intermediate portion and terminating in a beveled edge.

DANIEL J. PARKER.