US1347912A - Device for shearing and cutting metals - Google Patents

Description

G. A. RICHARDSON AND A. MERCIER. DEVICE FOR SHEARING AND CUTTING METALS. APPLICATION men AUGJI. I919.

1,3473 1 2, Patented July 27, 1920.

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GEORGE ABCHIB'ALDRICHARDSON, or somnnsnnnnn AMEDEE Menominee won'rnme, ENGLAND; SAID MERCIER ASSIGNOR TO SAID RICHARDSON.

DEVIC Eon 'SI-IEARING AND 'cu'r'rme METALS.

- Specification of Letters Patent.

Application filed August'll, 1919. Serial No. 316,839.

T 0 all whom it may concern.

Be it known that we, GEORGE ARGHIBALD RICHARDSON and AMIEDIZE Mnnomn, subjects of the King of Great Britain, residing at \Veston-SuperWlare, Somerset, and orthing, England, respectively, have invented certain new and useful Improvements in Devices for. Shearing and Cutting Metals, of which the following is a specification.

.The device or apparatus. is particularly suitable for converting sheet metal vessels into flat shape and may be adapted for shearing metal of any shape.

Our invention will'be clearly understood from the following description aided by the example shown on the annexed drawings in which- Figure 1 is a plan.

Fig. 2 a side sectional view of an apparatus constructed according to our invention.

Fig. 3 a section on the line a a of Fig. 1.

Fig. 4 a side view and Fig. 5 a plan of the knife and carrier.

The apparatus constructed according to the drawings consists of a base or frame 1 having two bays or spaces 1 or there may be more than two and on the frame are positioned brackets 2 having bearings 3 carrying a shaft 4 with hand wheels 5 or fly wheels and pulleys for power drive.

On the shaft 4 is secured a gear wheel 6, which meshes with and drives a gear wheel 7 secured on a shaft 8 carried in bearings 9, 9 on the frame 1.

On the shaft 8 are also secured two cranks 10, 10 and to the outer end of each crank 10, 10 are fitted connecting rods 11, 11 the other ends of the connecting rods 11, 11 being connected to bearings 12, 12 on frames 13, 13 these frames 13, 13 are positioned in runways or grooves 14, 14 formed in between the bays 1 of the frame 1 so as to be capable of traveling backward'and forward in the run-ways on the revolving of the cranks 10, 10 as will be well understood, other means for reciprocating the frames 13., 13 may be employed.

-Each of the moving frames 13 carries a knife 15 the knives being formed with the cutting edges 16, 16 at an angle to the point 17 and the knives 15 are so arranged in the frames 13 that a part of the frame projects forward in front of the cutting edges of the knives as at 18, Fig. 5, and act as guides to the metal being cut and which traveling withthe knives give .a shearing action on the metal by reason of theshape of the cut- Patented July 27,1920.

ting edges of the knives and projectingframes 18, the edges of the frames: 13 being preferably beveled as at 19.

Guides 7 20 and 21 may be attached at various points inthe bays 1? for supporting the vessels being cut or guides may be attached to the'knives for a similar purpose.

In use and for cutting up a sheet metal vessel say an empty petrol tin the top is first removed by placing the tin in one of the bays 1 when the knife is clear of the bay-and resting same on the guides 20 which may be adjusted in height to suit the depth of cut to clear the bead or edging of the tin as shown in dotted lines 22 Fig. 3., 2 the frame 13 and knife 15 then travel forward, the point 17 of the knife 15 entering the wall of the tin and cutting the entering wall and the side walls by a shearing or scissor action due to the angle of the cutting edges 16 and projectingframes 18 which traveling with the knife cut the metal without bending it, on the return of the knife the bottom of the tin may be engaged by a spring plate or catch 23 on the knife or frame which draws the bottom of the tin back with it until free of the guides 20 when it drops through a hole or space in the frame 1 into a receptacle under the apparatus.

The tin is then reversed and a repeat operation cuts off the top leaving the tin within the guides 21 cornerwise as will be understood from the dotted lines Fig. 3 and the knife in traveling forward will remove the corner of the tin, each corner in turn being cut off and will result in the tin being out into a top, a bottom and four flat sheets (sides).

Other forms of guides or rests may be employed to support other shaped vessels and flat sheet metal may be simply held without supports. The action of the cutting edges of the knives which are so arranged that the frames in which the knives are carried act as guides 'and enable flat sheet metal, hollow sheet metal, cylinders, squares, cubes and the like to be out at any angle without bending. Sheet metal whether flat or otherwise may be out either from side to side or edge to edge.

What We do claim as our invention and desire to secure by Letters Patent, is 2- 1. An apparatusfor shearing or cutting metals comprising a frame,*and a reciprocating frame carrying an angled edged cutting knife Within the frame, said ,recipro eating frame having extensions constituting a support for the article to becut, means for reciprocating the angled edged knife frame, and guides or brackets for supporting the vessel 01' article to be cut.

2. An apparatus for shearing or. cutting metal, consisting of aframe or base having run-ways or grooves, frames including slidable Work-supporting members and carrying knives adapted to reciprocate in such run-Ways, each of said knives being formed with cutting edges at an angle to each other, the knives being positioned so that the -Work-supportingaside members of the frame project beyond said cutting edges, and.

means for reciprocating said frames, substantially as and'for the purpose set forth.

3. In apparatusof the class described, a base,.a pair of parallel grooves in said base, aisliding frame adapted to reciprocate in said grooves,an ang1e-edged knife mounted in said frame, said knife being so positioned in'the frame that the frame projects beyond the cutting edge of the knife, thereby providing Work-supporting fingers, a bearing mounted on said frame, a connecting rod attached to said bearing, means for actuating said connecting rod; and Work-supporting guides mounted, on said base.

'4. In apparatus of the class'described, a base, a pair of parallel grooves in said base,-

a slidingframe mounted in andadapted to reciprocate insaid groove, a cutting knife mounted in said frame, said knife being so positioned in the frame that the frame projects beyond the cutting. edge of the knife,

thereby providingwork-supporting fingers,

a spring catch on said knife adjacent one edge thereof, said catch being adapted to engage the work afterthe shearing operation has been completed, a. bearing mounted onthe frame, ajconnectlng rod attachedto

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