US99759A

US99759A - Improvement in gauges for paper-cutting machines

Info

Publication number: US99759A
Authority: US
Publication date: 1870-02-15
Anticipated expiration: 1887-02-15

Description

lowing is a full, clear, and exactV description of' the tained.

lble A.

l linitrd gitarre aient (fig-lim* CYRIL C. CHILD, oF nos'r oN, MASSACHUSETTS.

LcttcrslPaten-t No. 99,7 59, cla-ted If'cbrmwy l5, 1870.

I i IMPROVEMENT I N GAUGES FOR PAPER-CUTTING MACHINES.)

The Schedule referred to in these Letters P atent and making part of the name each side ofthe ning oft.

An indicator or pointer, b, is attached to bracket D, over pulley P, and band W'is\so spaced and numbored on its surface that the exact distance in inches and fractions thereof', from the knife to the front side of gauge B, is at all times shown.

Pulleys P P turn loosely on their axles, their hubs nearly filling the space between the` arms ofthe bracket-s.

To all whom z't may concern Be it known that I, CYRIL C. CHILD, of' Boston, in the county of Suffolk, and State of Massachusetts, have invented a new and `improved Mode of Adjusting the BackGauge of' Paper-Cutting or other Similar Machines; and I do hereby declare that the'folpulleys prevent the band from run# saine, which will enable others skilled in the art to make and use' it,irei'erence being had to the accompanying Vdrawings forming a part of this specification, in which- Figure 1 is a front elevation of the frame of a paper-cuttingr machine with my improvement attached.

Figure 2 is a side sectional view through the lines x'a: and y y.

The same letters refer to like. parts. My .invention 'consists in providing for movingr the gauge to and fi'om the knif'e of' the machine by means of a metallic baud or chain passing over pulleys, and so arranging the parts that the distance between the knife and gauge ina-y be readily and accurately ascerto one arm of its bracket, while it passes loosely through the other, its projecting end having a serewthread, on which is tted a lever-nut, N.

Its operation is as followsz'4 the operator and until the exact distance desired l and gauge is shown bythe-numbers and spaces on the face of the hand where it runs -over pulleyP', when levernut N is turned up, drawing the two arms ofthe bracket aga-inst the hub of the pulley, holding it firmly in place while the papel' is being cut.

lThe spaces and numbers may be placed upon the `fiange'of'` the pulley, but preferably on the band itself.

The construction and operation is as follows:

VA representsthe table of the inachinc, t-o the under side of which are attached'brackets DI), supporting,r pulleys P P'.

.1 5 is the back gauge, a projection from the bottom Having described my invention, of which sticks in a slot cut lengthwise through ta- What I claim, isv 1. The spaced and numbered band W, made and operating substantially as and for the purpose herein described.

A strip of' thin sheet steel or other flexible metal, about one inch in width and of suitable length, is passed over the pulleys P l", and each end secured to the downward-projecting part of gauge B, as shown at d, fig. 2, thus forming a band, W. This latter is prevented from slipping by friction, or short pins may project from the face ot' pulley P, and engage in perfin-ations made in the band. Slight flanges raised on and lever-nut N, operating substantially as and for the purpose set forth. i

Witnesses:V .Y CYRIL C. CHILD.

G. L. BAILEY, LLPRCUTY, Sr.

The axle on which pulley P lturns lis secured firmly 2. In combination with the band W, pulleys P P" The rim of pulley P is grasped with the -hand of