US822976A - Oval and round cardboard cutting machine. - Google Patents

Description

PATENTED JUNE 12, 1906.

D. T. MOGOALL Y OVAL AND ROUND CARDBOARD CUTTING MACHINE.

APPLIOATION FILED DIE-0.10, 190 3.

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UNITED STATES PATENT OFFICE.

DONALD T. MOCALL, OF JACKSON, MICHIGAN. OVAL AND ROUND CARDBOARD CUTTING MACHINE.

Specification of Letters Patent. Application filed December 10, 1903. Serial No. 184,677.

Patented June 12, 1906.

To all whom it may concern:

Be it known that I, DONALD T. MoCALL, a citizen of the United States, residing at the city of Jackson, in the county of Jackson and State of Michigan, have invented a new and useful Oval and Round Cardboard Cutting Machine, of which the following is a specification.

My invention relates to improvements in oval and round cardboard cutting machines in which a reciprocating table operates in conjunction with a rotating cutting-knife adjustably secured upon a sweep-arm, to which are also secured an adjustable pressureroller and an adjustable ornamental wheel formaking a bead and the object of myimprovements is to provide a machine that is simple in construction and easy to operate and that will cut a perfectly true oval or circle. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side elevation, partly in section. Fig. 2 is a end view, partly in section, of one portion of the machine. Fig. 3 is a top view of the sweep-bar and an attachment secured to said bar.

Similar letters refer to similar parts throughout the several views.

A is the metal upright frame, secured at the base to the top side of the sills O O crosswise of the table M. The side sills O are secured to the crosswise end sills l N by The bracebracket S is secured to the side sills O and to the metal frame A. There are two outwardly-projecting brackets R R secured at one end to the metal frame A. In the outer ends of the brackets R each one has a journal-bearing in which the shafts E and E revolve. The upper shaft E has the handle D secured to it, by which the machine receives its reciprocating motion given to the table lV The shafts E and E have made integral to each of them an L, and through, these Us a hole is made for the reception of the staple-crank pitman C, which is secured to the Us by set-screws. At the base of the lower shaft E is made integral to it an outward projection U. To this part the sweep-bar G is secured by the bolt W, and on this bolt the sweep-bar G oscillates. In the part U a thumb-screw is used for regulating the cut of the knife and for holding the sweep-bar up when not in use. To the table M are secured two standbrackets F, one on each side of the table. To these brackets F are secured the crosswise parallel bars B, which are spaced a suflicient distance apart to allow the staple or crankpitman C to pass in between them. The table M has secured to its side edges a strip of band-iron P, which moves on ledges on the sills O, causing little friction. The sweep bar G has located on it three slidable blocks. The pressure-wheel V travels on the inside of the out, being pivoted on the stem Z, and conforms itself to the circle being out. At the top of this block there is a threaded bolt Y for regulating the pressure on the cardboard being cut. This block when set is secured to the sweep-bar G by a set-screw, the slidable block H being secured to the bar G. At the lower end of this block there is adjustably secured the square knife-block I, having the knife J secured to the block I, as shown in Fig. 1. The slidable block X is secured to the bar G and has a wheel journaled on its axle. The face of this wheel may be made in any ornamental form desired to make a mark or bead on the outer edge of the oval cut. On the outer end of the sweep-bar G is located a weight Q for gradually forcing the knife into the card board. K is a spring-clamp secured to the table M by a bolt for holding the cardboard L firm on the table while being cut. There are two of these springs or clamps used, but only one shown.

Having described my invention, I will now describe the operation.

The cardboard L is laid on the table M and secured by the springs K. The size of the oval to be cut is then determined crosswise. The slidable block H is then set on the sweepbar G. The length of the oval is then determined. The adjustable crank O is then set in the Ls apart of the shafts E and E to give the deslred travel to the table M. To cut a circle, the staple-crank C is set directly in the center of the perpendicular shafts. Then when the handle D is turned the table M will stand still. It will be seen the crank C determines the travel of the table. When the handle D is turned to the right when standing in front of the machine, there will be cut a perfect oval, or circle.

I am aware that prior to my invention oval-cardboard-mat-cutting machines have been made with stationary tables. I therefore do not claim sucha combination broadly; but

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What I do claim as my invention, and de frame, and means for rotating the staplesire to secure by Letters Patent, iscrank whereby a positive reciprocating Ino- In a machine of the character descr1bed,. tlon is mparted to the table, substantially a fixed supporting-frame, a truss-frame havas described. 15

5 ing outwardly-projecting brackets secured In testimony whereof I have signed my above said fixed frame, bearings 1n said name to the speclficatlon 1n the presence of brackets in which are ournaled perpend1cutwo subscriblng witnesses.

lar shafts coupled. together by an adjustable DONALD T. lllOOALL. i) staple-crank which operates in conjunction \Vitnesses: IO with parallel bars secured to brackets fixed G. L. STEVENS,

to a table slidable on the fixed supporting- WILLIAM D. WHEAT.

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