US1573483A - Splitting shear - Google Patents

Description

Feb. 16 1926.

E. ENDERES SPLITTING SHEAR Filed May 29, 1924 INVENTOR ERNST EUDgRE s ATTORNEY Patented Feb. 16, 1926.

' UNITED STATES ERNST ENDERES, OF ALBERT LEA, MINNESOTA.

SELITTING SHEAR.

Application filed May 29,

ToaZZ whom it may concern:

Be it known that I, ERNST ENDERES, a citizen of the United States of America, and

- resident of Albert Lea, Freeborn County, Minnesota, have invented a new and useful Splitting Shear, of which the following is a specification.

The object of this invent1on is to provide an improved construction for a traveling shear adapted for cutting sheets of metal and the like. .A further object of this invention is to provide improved means for actuating the movable blade.

A further object of this lnvention is to provide an improved form of track on .-which the frame and blade may travel in the cutting operation.

A further ob ect of this invention is to provide mproved means for forming a traveling connection between the shear frame and track.

I it. further'object of this invention is. to

provide improved means to cause the frame and members carried thereby to advance by step-by-s'tep movement along the track as the blade is actuated.

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in the claims and illustrated by the accompanying drawing, in whichfFigure 1 is .a plan view of the complete device. Figurel2 is a side elevation of the same, portion of the actuating lever and track being broken away'to economize space.

Figure 3 is a longitudinal section, on an enlarged scale, on the line 33 of Figure 1.

Figure t is a; cross-section, on an enlarged A. frame "11, preferably a casting of 1rregular shape but rather flat, is arranged on edge alongside the openface of the channel beam 10 and is adapted for travel lengthwise thereof. The frame 11 preferably is formed with an integral offset portion 11 projecting toward the channel 10 and of substantially the same vertical dimension as said member, the main portion of the frame 1924. Serial No. 716,647.

thus being spaced somewhat from the plane of the channel. Journaled on the face of the offset portion 11 of the frame, as by means of shouldered bolts 12, are a pair of upper rollers 13 and a pair of lower rollers 1 1-, projecting within the channel 10 anih this instance angle bars 15, 16 mounted on the margins of the upper and lower flanges respectively of said channel, extending longitudinally thereof and secured by rivets 17. One flange of each angle bar 15, 16 projects across the edge of the channel flange on which it is mounted and extends behind the rollers 13 or 1 1, as clearly shownin Figure 4;, thus preventing displacement of the rollers from the channel by lateral movement and serving to retain the frame and members carried thereby in position relative to the track. The inwardly projecting flanges of the angles 15, 16 are received in rabbets 18, 19 in the adjacent face of the frame member 11 so that the frame may be mounted close to the channel.

Pivoted to the forward upper portion of the frame 11, by means of a bolt 20 6X- tending through said frame and a bracket 21 mounted'thereon, is a socket member 22 of the frame adjacent the track, pivoted at one end on a bolt 26 in said frame, and its free end is adapted for oscillatory move- -ment'across said recess in a plane parallel "Wlth the frame.

A cutting blade 27 is attached to the free end of the cutter arm 25,

on that face adjacent the track, and is adapted to cooperate with a stationary blade 28 carried by the adjacent portion of the frame at the lower side of the recess 2%.

Forwardly of the pivot 20, the lower face of the socket member 22 is formed with a curved cam margin 29 adapted for rolling contact with the upper face of the cutter arm 25 and serving to exert downward pressure on said arm when the socket memher is oscillated in a forward direction by manipulation of the handle 23. The movable blade 27 is thus caused to pass across the plane of the stationary blade 28 and effect a cutting operation on a substance which may be located between them. A link link to lift the said arm and blade 27 when the handle 23 and socket member are oscillated in a reverse direction.

A bar 33 is arranged parallel with the upper portion of the channel track beam 10, on that side opposite the frame 11, is slightly spaced therefrom and held in place by any suitable means such as bolts or screws 34. A pair of clamping devices are arranged on the bar 33 and adjacent margin of the channel beam 10, each comprising a hook bolt 35 mounted between said members and having itshook engaging beneath the bar, said bolt being threaded at its upper end and equipped with a wing nut 36, a washer 37 being mounted on the bolt beneath said nut and adapted to engage a marginal portion of a sheet tocbe cut or sheared. The clamping devices may be adjusted longitudinally of. the .track by loosening the nuts 36 and then caused to engage end margins of the sheet and hold it during the cutting operation by tightening the nuts.

A cable 38 is arranged in part within the v channel track beam 10 and has one end secured to the forward end portion thereof at the point 39. The cable 38 passes rearwardly in the beam substantially on the I median line thereof, passes between the u,

per rollers 13.and lower rollers 14 and out the rear end of the beam or through the open face thereof, depending upon the position of the .frame. The cable 38 then extends around direction, pulleys 40,41 journaled in a bracket .42 arranged transversely on the rear end of the frame 11 and extends forwardly alongside the outer face of the said frame, and is fastened to and adapted to be wound on a drum 43 journaled' on said frame opposite the socket member 22 and on the pivot bolt 20 thereof. The drum 43 is providedwith a peripheral ratchet 44 engaged and adapted to be turned by a dog 45 pivoted on thesocket member 22, whereby s'tep-by-step rotary motion is communicated to the drum as the handle 23 is oscillated, in such manner as to cause the cable 38 to be wound on said drum, and the draft thus applied, the other end of the cable being fixed to the track beam, causes the frame and elements carried thereby to advance with step-by-step-movement toward the forward end of the track, the rollers 13, 14 traveling onthe flanges of the track beam. It is apparent, therefore, that each forward movement of the handle 23 causes the cutter arm 25 to be depressed, by action ofthe Jsection of, a sheetcwhich may be mounted on the track and extend Within the; recess 24 of the frame; and that each rearward movement of said handle causes the cutter arm to be raised, through the link 30, and also causes the dog 45 to engage a tooth of the ratchet 44 and advance the frame and members carried thereby in readiness for another out. A detent 46 preferably is pivoted on the frame 11, and is in engagement with the ratchet 44 to prevent undesirable reverse movement of the ratchet and drum.

When the frame and cutting elements have advanced to the forward end of the track,

or to the extentdesired, the detent 46 is released and the frame moved manually rearwardly of the track, the cable unwinding from the drum during such movement. If for any reason it is desired to separate the frame and cutting elements from'the track,

it may be'accomplished by continuing the rearward movement until the rollers V 13, 14 pass out of the rear end of the channel track beam and are no longer confined by the angle bars 15, 16.

I. prefer to mount the cutting arm 25 in such manner that it may be accurately and positively adjusted laterallyrelative to the frame '11 and stationary blade 28. this purpose a pair of adjusting blocks 47,

48 are provided, one near each end of the cutting arm, one of which is shown in Figure 5. The blocks 41, 48 are of rectangular form and are set in'recessesin the face of the frame 11 and for each of said blocks a pair of set or adjusting screws 49, 50 are employed, which screws are threaded into and through the frame from the opposite side and engage in holes bored in the inner faces of the blocks, by which means. the blocks may be adjusted and consequently move the cutting arm and space. it relatively to the frame, Lock nuts':5l on the outer ends of the adjusting screws 49, 50 tend to preserve 1 the adjustment when secured, by engagement with the face of the frame member.

I claim, as my invention- V a 1. A shear, comprising a track formed of Fora channel beam, a frame, rollers on saidfname extended between andxadapted for travel on the flanges of said beam, said frame being formed with a recess, a stationary blade at one margin of said recess, an arm mounted for oscillation across said recess, a cutting blade carried by said arm and adapted to cooperate with the stationary blade, means for oscillating said' arm, and means connected with the arm-oscillating means for causing step-by-step travel'of said frame. I a

2. A shear, comprising a track of channel form, a frame mounted alongside said track, rollers on said frame projecting within and adapted for travel on said track, angle-bars on said track overlapping saidrollers, cutling means carried by said frame, a lever plvoted-on said frame and adapted to actuate said cutting means, a drum pivoted on arranged for travel relative to said track,

cutting means carried by said frame, a bolt transversely of said frame, a lever pivoted on said belt and adapted to actuate said cutting means, a drum pivoted on said bolt independent of said lever, a cable fixed at one end to said track, extending around said frame and adapted to be wound on said drum, a ratchet carried by said drum, and a pawl on said lever adapted to rotate the drum when said lever is actuated, whereby the cable is wound on the drum and the frame and cutting devices are caused to advance as the cutting operation progresses.

l. A shear, comprising a track formed of a channel beam arranged on edge, a frame having a member extended toward and adapted for travel relative to said beam, rollers journaled on said frame member and extending within said channel track and adapted for rolling contact with the upper and lower flanges thereof, angle-bars on' said channel track to prevent separation of the rollers therefrom by lateral movement, cuttin means carried by said frame, and means to cause said frame to advance on the track as the cutting means is actuated.

5. A shear,.comprising a track, a frame mounted alongside and adapted for travel longitudinally of said track, said frame being formed with a forwardly opening recess, a stationary blade carried by the frame at the lower margin of said recess, an arm pivoted on said frame and adapted for movement across said recess, means for adjusting said arm laterally of the frame, a cutting blade carried by said arm, a lever fulcrumed on said frame and formed with a cam face adapted to engage and depress said arm, and pivotal connections between said lever and arm. for raising the latter.

6. A shear, comprising a track, a frame mounted alongside and adapted for travel longitudinally of said track, an arm pivoted on said frame, adjusting means carried wholly by the frame for adjusting said arm laterally, a cutting blade carried by said arm, a lever fulcrumed on said frame and formed with a cam face adapted to engage and depress said cutting arm when the lever is oscillated in one direction, a link pivotally connecting said lever and arm and adapted to raise the latter when the lever is oscillated in the opposite direction, and means connected with the lever for causing the frame to advance on the track a step at a time as the lever is oscillated in reverse direction.

7. In a shear having a frame member and a cutting arm parallel therewith, adjusting means comprising a block set in a recess in said frame member and engaging said arm, and an adjusting screw threaded through said frame member and in engagement with said block.

Signed at Albert Lea in the county of Freeborn and State of Minnesota, this 18th day of March, 1924.

ERNST ENDERES. I

Images