US349845A

US349845A - Lint-machine

Info

Publication number: US349845A
Authority: US
Publication date: 1886-09-28
Anticipated expiration: 1903-09-28

Description

(No Model.) 2 Sheets-Sheet 1.

J. W. JOHNSON.

LINT MACHINE.

No. 349,845. f ggtented Sept. 28, 1886 2 Sheets-Sheet 2.

(No Model.)

J. W. JOHNSON.

LINT MACHINE.

Llm Q P WM "Fries.

J. \VOOD JOHNSON, OF NE\V BRUNS\VICK, NE\V JERSEY.

LlNT-MACHINE.

SPECIFICATION forming part of Letters Patent No. 349,845, dated September 28, 1886.

Serial No. 202,50 (No lllfllhl.)

To all whom, it may concern.-

Be it known that L J. Woon .ToHNsoN, a citizen of the United States, residing at New Brunswick, New Jersey, have invented certain new and useful Improvements in Lint Machines, fully described and represented in the following specification and the accompanying drawings, forming part of the same.

This invention relates to an improved combination of mechanism for actuating the scraping-knife at right angles to the cloth or fabric, and for retracting the cloth by a lateral pressure upon the same between the feed-roller and the knife during the depression of the latter. The construction will be understood by refer ence to the annexed drawings, in which Figure 1 is a front elevation of a machine embodying my improvements. Fig. 2 is a plan of the same. Fig. 3 is a transverse section on line w a: in Fig. 2, showing only the feeding and scraping devices independent of their operating mechanism, the stretcher being elevated to retract the cloth, and the knife being shown in contact therewith. Fig. 4 is a similar section showing the knife elevated and the stretcher moving toward the cloth; and Fig. 5 is aside elevation of the upper part of the machine with the feedgearing and the knife-carrier in its guides, with one of its projecting brackets resting on the sun face of the cam, the gcar being merely indicated by dotted lines to expose the gears r r.

The machine, as shown in the drawings, is provided with a reciprocating-knife operated to rest intermittently upon the cloth during the scraping of the lint,with a rotary stretcher for retracting the cloth beneath the knife, and with a feed-roller for regulating the movement of the cloth through the machine.

a a are the frames of the machine; I), the roll of linted fabric or cloth, which is indicated in its passage to the scraping-knife by the letter I); c c are two guidebars over which it passes, and between which is situated the feed-roller d, the latter being provided with an adhesive surface adapted to grasp and hold the cloth. From the guide-bar c the cloth passes to and over an elastic cushion, consisting in a stationary roller, e, provided with a yielding covering,f, andhavingtheknifegsustained above it by a cross-head, 71, and dropped upon the cloth, during the scraping of the latter,by suitable mechanism. Between thefced roller and the cushion is mounted arotary shaft, '17, provided at one side with a longitudinal bar, k, which is held parallel therewith by armSj, and strikes the underside of the cloth when the shaft is rotated, thereby lifting the entire width of the latter, as shown in Fig. 3. As the cloth is prevented from moving where it adheres to the feed-roller 11, such lifting operates to retract it from beneath the knife, and thus subjects its fibers to a scraping action, where the knife rests upon them, each time the shaft '5 is rotated. After each retraction of the cloth the knife is lifted by an upward movement of the cross-head l1, and the cloth is moved forward over the cushion f by its own weight or by a weight, 10, attached to its outer end, and camsl are affixed to each end of the shaft 27 at opposite sides thereof from the stretcher 7;. The cams are located outside the frames a, and the cross-head h is provided with brackets m, which rest upon the cams and serve to lift the cross-head and knife when the stretcher is moving through the inoperative half of its circuit, as shown by the dotted curve 7; in Fig. 4. The fabric, after subjection to the scraping influence of the knife, is wholly converted into an endless sheet of loose fibrous tissue, which can be readily torn apart by the fingers, but which retains sufficient strength to hold a light weight, as the two thin bars 10 shown in Fig. 1. \Vhen a length of the fabric has been linted sufficient to hang down nearly to the floor, its weight suffices to take up the slack produced at each rotation of the stretcher, without the use of any auxiliary weight, the cloth then moving forward each time over the cushionf the amount which it has been retracted by the stretcher, plus the amount fed forward by the rotation of the roller (Z. The knife in its descent therefore strikes the cloth each time a little back of the point where its scraping action previously commenced, and the next retraction of the cloth then exposes the fibers of such new portion to the knife, as well as a portion of the fibers exposed by its previous action. The

cross-head operates at each end in vertical guides h, affixed to the frames a, and a cross 'terial to the working of my invention.

bar, g, is sustained upon the tops ofsuch guides to compress a spring, 8, which is inserted between such cross-bar and the cross-head to exert an adjustable pressure upon the knife and the cloth. The cross-bar is carried by studs having nuts 9 fitted thereto above the cross-bar to press it toward the spring 3. The cushion f is formed upon a roller held, as by split bearings 0, so that it may be rotated partially in its hearings to expose a different part of its surface to the knife, when desired, the entire surface of the cushion being thus available for successive wear. The cushion shown herein would be constructed of enameled oil-cloth secured over a layer of hair felt, the smoothness of such enameled cloth enabling the lint fabric I), to slip smoothly over the same, to take up the slack in the cloth I) each time the knife was lifted. The split bearings e are each held together by a screw, a"; but any other construction for the cushion or its bearings may be employed, as neither are ma- The rotations of the feed-roller being very much slower than those of the stretcher-shaft, the latter is geared to the former by means of a worm, 01, worm-wheel n, bevel-gears p, and spurgears r 1-; but any other gearing may be used, as desired. The construction of the feed mechanism is not material, provided the required speed is transmitted to the roller by any suitable connection with the shaft i, the latter being provided with fast and loose pulleys t t, to rotate it at the required speed.

Having thus set forth the operation of my invention, it will be seen that its essential feature consists in reciprocating a knife intermittently to and from the cloth resting upon ayielding cushion, in feeding the cloth thereto by the rotation of the feed-roller when the knife is lifted, and in retracting the cloth, when theknife is depressed, by pressing upon it laterally between the feed-roller and knife.

I am aware that in a British lint-machine the feed-roller itself has been made the retracting agent; but such a construction involves movable bearings for the feed-roller and means for moving the bearings to and from the knife. My construction is much simpler than this, as the stretcher operates directly upon the cloth itself and effects the alternate stretching and release of the cloth by a simple continuous rotary motion. I therefore disclaim any means for retracting the cloth that does not operate by pressing the cloth laterally between the feeding device and the scraping-knife.

What I -therefore claim,and desire to secure by Letters Patent, is

1. The combination, in a liuting-machine, of a yielding cushion, a reciprocating knife, mechanism, substantially as described, for operating the Same to and from the cushion, devices for feeding the cloth to the knife, and mechanism, substantially as described, for pressing the cloth laterally between the feeding device and the knife, when the latter is pressed upon the cushion, the whole arranged and operated substantially as and for the purpose set forth.

2. The combination, in a linting-machine, of a yielding cushion, a reciprocating knife operated to and from the same, a roller adapted to grasp the cloth and rotated intermittently when the knife is raised from the cushion, one or more guide-bars adjacent to the roller, a stretcher pressed laterally upon the cloth between the feed-roller and the knife, when the latter is pressed upon the cushion, and means for actuating the knife, roller, and stretcher, substantially in the manner and for the purpose set forth. p

3. The combination, in a linting-machine, of a yielding cushion, a reciprocating knife operated to and from the same, a roller adapted to grasp the cloth and rotated intermit tently when the knife is raised from the cushion, one or more guide-barsadjacent to the roller, a revolving shaft located between the J. XVOOD JOHNSON.

Vi tnesses:

L. LEE, HENRY J MILLER.