US1119506A - Cutting-machine. - Google Patents

Description

B. J. GUNDLAGH. CUTTING MACHINE. APPLIUATION FILED MAY 4, 1914.

1,1 19,506, Patented Dec.1,1914.

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UNITED sTATEs PATENT oFFCn BEND J'. GUNDLACH, OF BELLEVILLE, ILLINOIS.

CUTTING-MACHINE.

' To all 'a0/10m imag/concern:

Be it known that I, BENQ .Il GUNDLACH, a citizen ofthe United States, residing at Belleville, Illinois, have invented a certain new and useful Improvement in Cutting- Machines, of which the following is a full,

clear, and exact descriptiom suchas will enable others skilled in the ,art tolwhich it appertains to make and use thesame.

T his invention relates to cutting machines, and has forits main objectwtoprovide a manually operated machine thatwill` sucycessfully cut asbestos shingles, which is small and compact enough to enable it to be carried around by a workman who 1s ,shingling a roof, and which can be manufactured and sold at a low enough price to enable a carpenter or similar workman to purchase one for his individual use.

.Another object is to provide a machine of the character' described that will cut an asbestos shingle clean and even and also puncture holes in shingles, and still another is to provide an efficient hand-operated cutting machine that comprises only a few parts of simple design that are not apt to break or get out of adjustment when the machine is used to cut a hard and tough brous sub` vtical transverse sectional view taken on the .line 4-1 of Fig. 2: and Fig. L5 isa vertlcal transverse sectional view taken on' the line 5-5 of Fig. 1. y

Referring to the drawings which illustrate the preferred form `of my invention, A and B designate two'cutters or knife blades that are disposed diametrically opposite each other. and which are provided with substantially' V-s'haped cutting edges that form cuts in both faces` or sides of the sheet being operated on whenthe cutters are closed or brought together. The cutter A, which I will term the stationary cutter,

is mounted in the .upper edge of a stationary cutter holder 1, that consists of a long,

rigid bar, and the cutter B,`which I will termthe 'movable cutter, is mounted in the lower edge of a movable cutterholder 2 that is arranged directly above the stationary cutter holder 1. Said' cutter holders are held in vertical alinement witheach other by two -pairs of vertically disposed guides 3 secured to theopposite end portions ofl i,

the stationary holder land embracing the speciacation of Lettersratent. patented Dec, 1, .19ML i' Application sied May 4, 1914. serial Nassaaez. u f

movable holder 2.k I also prefer to provideone of .the cutter holders with auxiliary guide pins 4 thatproject from Aone edge of same' and enter the holes 5 in theedge of the other 'cutter holder, as shown in Fi'gQ 5, said guide pins being long enough so that they will not be completelywithdrawn from the holes 'when the cutters are open or separated. The movable cutter is normally held in its elevated position by means'of f `coil springs G that surround the guid'epins Zl, and which are arranged, between the .cutter holders adjacent the ends of same. The

`movable cutter holder 2 is providedwith stops or Iabutments 7 that are arranged between the vertically disposed guides 3 at each end of the machine` and thus prevent .the movable cutter holder 2from moving longitudinall'yfof the stationarv cutter holder, said abutmen'ts "i" ,preferably` con-y sisting of pins that pass transversely through the cutter holderu2, asgshown in i j 9o The actuating mechanismv for the movable Figs. 3 and 4.

cutter consists of two levers 8 and 9 pivotvertically disposed guides 3 andprovided'at their lower ends with rams 11 that bear against theupper edge of the movable cut- Vally connected at 10 tothe upper ends of the ter helder 2 vand force itjdownwardlv-when said levers are swung in one direction. as

shown in Fig. 2.` The movement of said le 4 vers in the opposite direction shifts `the cams 11 intosuch a position thatthe springs 6 can raise the holder 2 andthus separate the cutters. o The lever 8 is provided with an operating handle 8a. and vmovement is transmitted from `saidjlever to the lever 9 by means of links 12"that are lpivotallvconnectedAto said" levers in such a manner that the cams 11 will:

exert uniform downward pressure on the movable cutter holder 2 when the handle 8a is actuated in one direction.` f

The machine is provided with a base or lees that-held the knife. lifeless Pf right position, and in the form of my invention herein shown said legs are formed by iianges 3a on the lower ends of the bars that constitute the vertically disposed guides 3. The cutters A and B fit snugly in grooves that eXtend longitudinally of the cutter holders, and if desired, pins 18 can be passed transversely through the holders and cutters, as shown in Figs. 3 and i so as to `is inclined upwardly slightly from its inner toward its outer end so that the sheet as will rest upon the upper edge of the stationary cutter A and on the outer end portion of the work table, as shown in Fig. 3, and thus cause the movable cutter B to force the sheet downwardly onto the stationary cutter A; in other words, thework table 14 is so designed that there is sufficient space between the underside of the sheet and the top surface of the work table at a point adjacent to the cutters to permit the movable cutter to force the sheet downwardly far enough to cause the sharp edge of the stationary cutter to sink into the underside of the sheet, thus forming `cuts in both sides ot the sheet ai.

YA` stop l5 is arranged at one end of the work table so as to prevent the sheet from slipping longitudinally off the ywork tablev after the sheet has been cut. this being a very desirable feature in a machine that is used for cutting shingles, owing-to the fact that the machine is generally used onthe roof of a building and is arranged at such an angle that the portion of the shingle lying on the work table` would slide longitudinally olf of `saine after the shingle has been severed if the work, table were not provided with a stop or similar device 15. The vertically disposed guides 3 are preferably so designed that the upper .ends of same form stops or abutments 16 thatk coperate with the links l2 so as to limit the movement of the movable cutter holder 2V in both directions, as clearly shown in Figs. l and 2. At oneend of the machine is an inclined support 17 for holding a shingle yin which itis desired to punch a hole, said support being arranged in such a positionk that a punch 18 on the Y lever 9 will pass through the shingle on the support and enter a hole 18a in said support when the cutters are closedas shown in Fig. 2.

A machine of the construction alcoveV described will successfully out asbestos shingles and other fibrous sheet material that is hard and tough :'the machine is small compact enough to" enablefit to' be' carriedarund a roof by a workman who is shingling the roof and the machine can be manufactured at a low enough cost to make it practicable for a workman to purchase one -for his individual use. There is no danger of the cutters springing or spreading apart during the cutting operation, as would be apt to result with a ,portabler machine oit the type now generally used for cutting light-weight sheet metal in which the knives or cutters travel past each other and shear the material, and, as the machine comprises only a few substantial parts of simple design, there is little danger of the machine breaking or getting out of adjustment when it is in use.

Having thus described my invention, what l claim is: l. cutting machine comprising a stationary cutter holder and a movable cutter holderthatconsist of long rigid bars arranged in vertical alinement with each other and provided in their meeting edges with cutters whose edges are disposed diametrically opposite each other, vertically disposed guides that embrace vthe movable cutter holder, levers pivotally connected to said guides and provided with cams that bear against the upper edge of the movable cutter A holder when said levers are moved in one' tudinally when it is depressed, the upper" ends of said guides forming abutments or stops that coperate with said links to limit the movement of the movable cutter holder in both directions, and means Jfor holding said cutter holders in an upright position.

2. A cutting machine comprising a stationary cutter holder provided with a laterally projecting work table whose outer end is bent upwardly to form an abutment that guides the work, a cutter in said holder whose edge supports the sheet that is being operated on, a movable cutter holder provided with a cutter that is arrangeddirectly above the stationary cutter, a manually operated actuating device that comprises cams which exert downward pressure on the posite end portions ofk the movable cutter holder, resilientmeans for elevating the movable cutter holder and normally holding the cutters separated, `and vertically disposed guides that embrace the movable cutter holder.

3.4 A cutting machine comprising a stationary cutter holder and a movable cutter holder, each of which consists of a long rigid such a position that said punch will engage same.

4. A cutting machine comprising a stationary and a movable cutter holder, each of which consists of a long rigid bar, sharpedged cutters set in the meeting edges of said holders, vertically disposed guides connected to the end portions of the stationary holder and embracing the movable holder, legs on the lower ends of said guides that hold said cutter holders in an upright position, levers pivotally connected to the upper ends of said guides and provided with cams that bear against the upper edge ofthe movable cutter holder, one of said levers having an operating handle, links pivotally connected to said levers for causing them to more in unison, and a rigid work table carried by the stationary cutter holder and projecting laterally from one side of same, the supporting surface of said work table lying in a plane slightly lower than the plane of the cutting edge of the stationary cutter.

5. A cutting machine comprising a stationary and a movable cutter holder, each of which consists of a long rigid bar, cutters Copies of this patent may be obtained for set in the meeting edges of said holders, vertically disposed guides connected to the end portions of the stationary holder and embracing the movable holder, legs on the i lower ends of said guides that hold said cutter holders in an upright position, levers pivotally connected to the upper ends of said guides and` provided with cams that bear against the upper edge of the movable 1 cutter holder, .one of said levers having an holder and projecting laterally "5 signature in the presence of two witnesses, v

this 30th day of April, 1914.

y BENO J. GUNDLACH. Witnesses:

WM. P. GUNDLACH, S. N. Gruivonaorr.

Washington, D. C.

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