US7978A - wilder - Google Patents

Description

' uUNITED STATES PATENTOFFICE.

A. A. WILDER,` or DETROIT,` MICHIGAN. j

COPYING-PRESS. 1

Specication of-Letters Patent No. 7,978,`dated March 11, 1851.

T0 all whom t may concern Be it known that I, A..A. WILDER, of Detroit,1inthe county of Wayne and State of Michigan, have invented new and useful Improvements inPresses for Copying and for other Purposes; `and I do hereby declare that the following `is a full, clear, and eXact description of the same, reference being `had to the accompanyingdrawings, making a part of this specification, in which-` Figure lfis a side elevation showing the press open and handle erect. Fig. 2 is a plan of the same. Fig. 3 is a vertical sec tion showing the press clo-sed and handle horizontal. Fig. 4 is an end elevation seen from the `back of the press when closed.

The same letters of reference indicate the sameparts in each ofthe several iigures.

The nature of my invention consists in the use of twoiiat pressing plates, one of which, being vertical, works on a slide and has an adjusting screw `for regulating the degree of pressure or width between the plates, according to the thickness or the nature of the material being pressed, and the second plate being fitted so in the table or bed plate that it `may have a movement so as to open like an hinge, `and itpossesses,

also, an adjusting screw `or` box through which the screw pin passes and which `is attached by link rods to the handle or lever having its fulcrum on the opposite plate; the loose or hinge-hung plate'being opened and shut by the motion, upor down, of the lever handle which produces the pressure.

To enable others skilled in the art to make and use my invention, I will proceed to `de- Iscribe its construction and operation. f

A, is a bottomor bed plate, having slots through its top as will behereinafter described, and at one of itsangles `or ends, a projecting piece a. l

is a vertical pressing plate, with projecting pieces C, D.: the projectingpart C,

forms a` slide which travels in a `slot through the face of the `bottom plate A, and is secured at the required set by set screws I), c, biting at their edge on strips between which E, is a linger` screw collared and working through the piece o, it also works through C, and is used `for moving cropeningsthrough the top of the plate A, 1n order to admit of the plate F, moving in the manner of an hingez Throughthe pro- `pin g, as described, causes the plate F, to be thrown back, and it is `closed again o1 worked whenrequired to press, by forcing" down, to a horizontal position, the handle I, which draws toward B, the plate F. The screw pin E by being turned with the fingers causes the plate B, to slide `to or from the second plate F, theset screws b, c, being loosened to admit of the working of the slide' C and fastened when the proper set is procured, thus the width between the plates B, F, is altered to suit circumstances, and a further similar adjustment is procured by the set nut G, working on `the p'in g, which by the combination with the set pin E,

affords a diii'erent width, if required, be-

tween the to-p and' bottom of the plates B, F,l which may be used forequalizing the pressure on the ent-ire surface that the difference of leverage in the plate F, might aiect and for giving an" additional pressure either at the top or bottom, or at both, `as may be required. The movement produced by the handle l,` working on its fulcrum at D, fromits position and mode of attachment, is quick at first and gradually becomes slower and more powerful as the handle assumes ahorizon` tal position, which is `the time when most pressure isrequired, thereby offering a conslderable advantage over theordmary screw ress nor re uirinv to be secured or fasf P 7 C `tened to a table or bench, j on which, from its inode of pressing it may stand loose, and be `moved from place to place as desired;

the `handle I, by inclining, vertically, a little backward, always keeps the press ready for use, which combined advantages, as de`- scribed, constitute. a simple, eiiicacious and convenient form of press. j j

What I claim as my invention and desire ments C, E G, g, for the purposes expressed,

to secure by Letters Patent isand operating together, as shown, or 1n any The use of a lever handle I, having its substantially similar manner. fulcrum on the pressing plate B attached A. A. WILDER. 5 to the opposite plate F, by links H, H, as Witnesses:

shown, Working in the manner described, in O. D. MUNN,

combination with the adjusting arrange- S. H. WALES.

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