US63882A - Improved device foe cutting washers - Google Patents

Description

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IMPROVED DEVICE FOR GUTTIN G WASHERS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, ADAM P. GRUGER, of Lancaster, in the county of Lancaster, and State of Pennsylvania, have invented improvements on a |Tool or Implement for Cutting Washers or Rings out of leather; and I do hereby declare that the following is a full andoxact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure lis a perspective view of the .implement with all its parts in place.

Figure 2 is a front elevation ot' the brace-shaft with its centre point and cross-bar all in one piece.

Figure 3, a perspective view of the sliding-socket head and slotted knife-elamp or holder combined, held by a single screw. l v

Figure 4 shows two washers 1', 2, out by the cutter or implement.

The object of this invention is to have an instrument with a pair of adjustable knives, both as to lengthen ing them or feeding down as worn by use and sharpening, as well as to cut circular rings of any desiredsize or wid-th by regulating or `adjusting thein upon a stationary or fixed cross-bar, held by a single screw for clamping both the head and knife.

Fig. 1 clearly shows the central shaft A, adapted to. a socket in an ordinary brace-handle, with its point B as a centre. This shaft is cut out on the s'ides, leaving a central Bange, b, so that the sliding-socket head D, with the knife-holder d, may be slid close to the centre point, in order to eut/a smaller inner ring. The square cross-bar C is cast or wrought with the vertical shaft AB at right angles te the same, and forms one piece, as shown by fig. 2; The soeket-heads I), fig. 3, are so constructed as to slide on the' horizontal square bar C, one

`on each side of the central shaft A. These sockets have an open slot, d, into which the blade or knife E is inserted, made right and left, in such a. manner that when slipped upon the cross-bar C the slots for theknives are towards the central shaft, as shown in iig. 1, and the' binding or thumb-screws F on the same side of the har, say the rear.V The sliding sockets are, however, alike, being simply turned by introducing them upon the shaftfroui 'opposite sides. The slot d for the knife is open on the inner side so that the blade or knife E, when inserted `into the slot, will come with its square inner edge flush against the vertical side of the cross-bar C, in order that thc same may be firmly clamped and held against the fixed cross-bar by the thumb or binding-screw F, that also firmly holds the socket-head D, and prevents it from yielding from the position'to which it is i adjusted on the oross-bar, on the under side of which there is a graduated scale for setting the knives to any desired point for any special washer, the same gauge of which can he again accurately set when altered in the interior to some other size.

I am aware that cross-bars moving through an opening in the shaft, and held by a screw with a fixed knife on one end and an adjustable or sliding-knife on the/other end, may have 4been in use, but such must necessarily prove defective from the liability of yielding sutliciently in the socket 'of the vertical shaft as to Vcause an inequality inthe cutting as oneor the other of the knives is further removed from the centre; besides, both the fixed point B of the vertical shaft, as well as the xed knife, will shorten by wear, and-when worn out will require a new knife or cutting-blade and cross-bar. I am not aware that two adjustable :cutters on a rigid cross-bar have ever been used forsaid purpose; but I do not claim the employment of two-adjustable knives on a rigid lbar broadly.V What I consider novel is the construction of the open slot d in the sliding-head D, and single screw that binds' both the head and knifeblade against the bar,rand the advantage in making both the knives and soeket-heads adjustable on a xed bar united or forming one piece with the vertical shaft. rlhis combination and arrangement give this cutter several important advantages, and constitutes a newer improved tool for cutting washers from leather or other materials.

What I claim as my invention, and desire to secureby Letters Patent, is-' The manner of constructing the sliding-socket head D, with its open knife-slot cl, and single binding-scrcw F tn each, thereby making the knives ldoubly adjustable= in combination with a horizontal bar, C, uniterl firmly with thc vertical brace-shaft A, and centre point B, in the manner and for the purpose specified.

A. I. GRlUGER.

Witnesses:

WM. B. WILEY, JACOB STAUFFER,

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