US271835A

US271835A - Cutting-machine

Info

Publication number: US271835A
Authority: US
Publication date: 1883-02-06
Anticipated expiration: 1900-02-06

Description

(No Model.) 4

G. GILBERT.

CUTTING MACHINE. I No. 271,835. Patented Feb.6,1883.

V HQ. 1.

06 E H 1 Iii/l a 5 B .19 a,

m 5 Q y i yfl fl H E UNtTan STATES P TENT GEORGE GILBERT, OF PHILADELPHIA, PENNSYLVANIA.

CUTTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 271,835, dated February 6, 1883,

Application filed December 14, 1881. (No model.) V

I0 all-whom it may concern: I

Be it known that I, GEORGE GILBERT, a citizen of the United States, residingin Philadelphia, Pennsylvania, have invented certain Improvements in. Cuttin -Machines, of which the following is a specification.

The object of my invention is to construct a machine for rapidly cutting into any suitable lengths strips ortubes of textile fabric, paper, or like material, and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawings, in which- Figure 1 is a plan view of my improved cutting-machine; Fig. 2, aside view of the same,

partly in section; Fig. 3, aperspective view of L part of the machine, and Fig. 4 a view of a modification of part of the machine.

A is a base or platform, having bearings for the main shaft B and driving-shaft D, thelat- I), and being fed bythe rolls to a pair ofshears' comprising two blades, 01 and d, the' blade (I being fixed to the frame, and the blade d being pivoted at one end and connected at the opposite-end by means of a rod',-@, to a crankpin,f, on a wheel, 9, secured to the end of the shaft B, the connection between the rode and blade d and between said rod 0 and'the pinf being by means of a ball-and-socket joint, owing to the fact that the outer end of said blade 01 moves in the arc of a circle, thus necessia tatingmore or less lateral play of the connecting-rod e. 4 i I On the shaft B is a mutilated pinion, h, which gears into a spur-wheel, 9:, carried by a stud on a post, It, the latter wheel engaging with a spur-wheel, m, on the spindle of the roll G, and said spur-wheel m gearing into a wheel, a, on the spindle of the roll I.

It will thus be seen that as the shaft B is rotated an intermittent rotating movement will be im parted to the feed-rolls and a vibrating movement to the blade (1 of the shears, the

pinion It being so set in respect to the crank pinfof the wheel g that the feeding of the strip to the shears is effected while the latter are open, the closing of the blades and the cutrious objection to the usual method of cutting by hand.

The pinion h is made in two parts, y and y,

arranged side by side on the shaft l3, each half pinion in respect to the otherhalf the number of teeth may be increased as desiredfthe extreme adjustment being reached when the halves are set opposite to each other, the pinion then having forty teeth, which will extend entirely around its periphery. This extremity of adjustment is never intended to be resorted to, however, as it would defeat the purpose for which the mutilated pinion is used.

When it is desired to stop the feeding of the stripmwithout stoppingthe machine, theirame H, carrying the roller I, is turned on its pivots ,so as tofree said roller from contact with the strip, the feeding of which is therefore at once arrested.

To prevent the momentum of the roller G from carrying ittorward in excess of its proper movement, I secure to one of the standards E a spring, 1), which bears upon the wheel at and serves as a brake upon the movement of the same.

I have shown in the drawings a crank-wheel which rotates continuously, the blade d of the ICO ' thereof, the said friction-surface working in contact with a drum on the spur-wheel i, and both friction-faces being clothed with rubber, 1eather,or like material to insure a proper bite.

The pinion with segmental friction-face Iconsider to be the equivalent of the toothed pinion, and it may be made duplex in the same manner and for the same purpose as that described in connection with said toothed pinion.

I claim as my invention- .1. Thecombination of the feed rolls G I, the

shear-blades d d, the shaft B, with mutilated pinion h, the transmitting-gearing, the crankpin f, and the connecting-rod e, as specified.

2. The combination of the roll G, the shaft 13, having a mutilated pinion, la, transmittinggearing, and a friction-plate, 1), whereby movement of the roll G in excess of the proper extent is prevented, as set forth.

3. The combination of the shaft B, the pivoted knife d, the cra'nk-pinf, the connectingrod 0, the feed-rolls, and the duplex pinion IL, comprising two segments, 3 3 adjustable circumferentially in respect to each other on the shaft B, and both gearing into a pinion of the feed mechanism, as set forth.

. In testimony whereot'I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE GILBERT.

' Witnesses:

HARRY DRURY, HARRY SMITH.