US79360A - Ford stetson - Google Patents

Description

@uiten tetes getraut @frn WILLIAM H. LCH, 0Fv UXBRIDGE, MSSAGHUSETTS, ASSIGNOR TO BRAD- FORD STETSON, OF SAME PLACE.

' Letters 'Patent No. 79,360, dated June 30, 1868;

IMPROVED MACHINE FOR ROLLING LEATHER- Be it known that I, WILLIAM H. LEACH, of Uxbridge, in lthe .county of Worcester, and State of Massa.chu setts, have invented a new and useful Improvement in Machines for Rolling Leather, ofwhich the following 'is a full, clear,`and exact description, reference being had to the accompanying drawings, making a part of this specification, in which- "Figure 1 represents a rear elevation of a machine embodying my improvements.

Figure 2 is a side elevation,

Figure 3 is a transverse vertical section, and

Figures 4, 5,'and 6', are details of portions yot the machine.

Similar letters indicate like parts in the several figures.

The object of my invention is to provide a means for exerting an increased amount of pressureupon leather as it -is passed between the rolls in a machine for rolling leather; and the invention consists in mounting' the journals of'the lower or pressure-roller in a movable-lever frame, which latter is provided with projections on the under side of either end,.that rest upon arms orjoints, and which joints are supported upn'the central portion of a cross-piece inthe main frame, in such a manner as' to operate with the lever-frame like a toggle-joint,-in addition'to the usualcompo'und lever employed for elevating or moving the pressnre-roller.

Referring to the drawings, A. represents the frame'of a machine', which may be of any suitable form or size. B B are the rollers, between which the leather to be rolled is passed. The upper roller B isjournalled in the upper portion of the frame A, and has only a rotatingmotion. Thejournals of.the lower roller B rest upon projectionsb b of a leverffraine, C C', of the form shown in figs. 4 and 5, and they are also `iittedto slide in vertical slots on each side ofthe framedireetly'under the journals of the upper roller B. The portion C of the vlower frame extends tothe rear ofthe machine, as shown in tig. 3, n nd is connected, by means of the rod D, to the treadle-lever T. S. is a spring, that holds the treadle in an elevated position. These parts are of the ordinary construction, andoperate in a. well-known manner.

On the under side of the portion C ofthe lever-frame, at each side, are projections, c,'whiclx extend downwards and rest upon arms or joints E, supported upon a. cross-piece', F, ofthe frame on` cach side. The pr'o-' jections e and the joints or arms F are so arranged as `to act v:is toggle-joints, so that upon depressing the leverframe C the arm or joint F'will be brought forward, and lthus raise thc-bearings b that support the journals of the roller B', thus pressing the latter upwards with great force against the leather or ther substance between the rollers. A

On the outer ends ofthe bearings bof the lever-frame C C are flanges, old, which are designed to itsnugly on the outer sides of the frame, and thus hold the-two sides ofI the frame togethers.

By means of the above-described construct-ion` and arrangement of parts, I am enabled, by the exercise of very little power comparatively, to exert a very great pressure upon the leather or other material operated upon, thus very greatly increasing the eilciency of this class of machines.

Having thus described my invention, what I claim.` as new, and desire to secure by Letters Patent, is-

1. The arrangement of the lever-frame C, providedl with the projections c, and the compound lever C D T, when the partsare ,constructed and made to operate' the roller B', .as and for the purpose set forth.l

2. The anges d d on the bearingsA b of the lever-frame G, as and for the purpose set forth.

In testimony whereof, I have signedmy name to this speeication in the presence of two subscribing witnesses.

WM. H.` LEACH.` Witnesses:

Grao.v W. Horns,

BRADFORD SrsrsoN.

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