US309128A - Ljntsng-wiachine - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

G, HBRQWNE.

LINTING MACHINE.

Patented Dec. 9, 1884.

Gueorye E, .Browz-ze.

(No Model.) 3 Sheets-Sheet 2.

G. EQBROWNE, LINTING MACHINE.

No. 309,128." Paten tedDec'. 9; 1884.

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LINTING MACHINE (No Mod l) Patented Dec. 9, 1884.

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Unirnn dramas PATENT tries.

GEORGE EDIVARD BROWNE, OF MEDFORD, MASSACHUSETTS.

LlNTlNG- MACt-HNE.

SPECIFICATION forming part of Letters Patent No. 309,128, dated December 9, 188%.

Application filed March 31, 1884. (No model.)

T0 at whom it may concern.-

Be .it known that I, GEORGE EDWARD BRowNE, a subject of the Queen of Great Britain, residing at Medford, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Linting-lllachines and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to linting machines, so-called, for partially drawing out upon the surface of any textile fabric to be so treated fibers composing the threads from which the fabric is woven to form an absorbcut for surgical or other purposes.

The essential features of my present improvcments consist, first, in a continuous rotary knife-stock or carrier armed with operating-blades and acting in unison with rotary cushions or beds, preferably elastic; second, in the cams which cause active operation of the knives upon said beds, and, third, in the general construction and adaptation of parts, to be more fully hereinafter explained, whereby a much superior and larger amount of finished material is produced in a given time.

The drawings accompanying this specification represent, in Figure 1, an end, and Fig. 2 a front, elevation of a machine embodying my invention, while Fig. 3 is a vertical crosssection of the machine.

The drawings, A A represent twin standards suitably located and supporting in proper bearings three horizontal shafts, B, O, and D. These shafts span the distance between the standards, and the two former, B O, are in vertical adjustment with respect to each other, the outer extremity of the lower shaft, 0, being provided with fast and loose pulleys and a spur-gear, E, meshing with and of the same size as the spur-gear F, fixed and mounted upon the upper shaft, B, which carries the knifestock G. The lower shaft, at its outer end, is fitted with a worm, H, operating with a worm-gear, I. The gear I is mounted upon one end of a short shaft, properly journaled and secured to the standard A, while at its other end is affixed a pinion, J, which actuates the gear-wheel K upon the shaft D, before mentioned. This shaft supports a tensionfeed roll or drum, D", whose periphery is furnished with card clothing or other suitable material by which to hold the cloth against the pull or stroke occasioned by the knives against the beds in linting, and thereby exert a proper tension upon the fabric to be treated as it passes over from a drum upon which it is wound. The operative mechanism. of this shaft D and its drum is much slower than the motion of the knives, and by this means is detained the drawing or linting motion requisite to produce the desired result or finished product.

Upon each end of the shaft 0, I have affixed twin spiders L L or castings with four arms at right angles to each other. Each of these arms serves as a journal to support shafts a a a a, carrying rollers b b b b, provided with some elastic medium upon their peripheries. These rolls are adjustable by the free motion of their shafts in the journals, for the reason that as the elastic medium upon their peripheries becomes worn by active co-operation with the knives it is necessary to revolve said beds upon their axis to present a fresh contact-surface. After being turned they are secured in a fixed position by set-screws properly arranged.

Upon the upper shaft, B, I have mounted a knife-stock, G, formed of two similar plates, M M, and have cut in their peripheries four tangential slots, 0 e c 'c Each of these slots contain rectangular bars cl cl d d adapted to move freely in them, and to be actuated by springs e c e c to retain them in their normal or inactive condition. Firmly bolted to these cl d, &c., are the operating-knives f f I have arranged to have the shafts B (3 move at exactly the same rate of speed, and have so disposed the four knives and their beds relatively to each other that the highest point of rotation of the rolls shall reach a vertical line drawn through the center of the shaftsB C at the same moment that its corresponding knife does, and thus obtain at every revolution of a knife an active stroke or pull upon the fabric lying between a roll and its knife as the two press together and cooperate with each other.

IOC

To produce an active movement or stroke of each knife at every revolution of the shaft 13, I have pivoted two levers, g g, to the standards A A, their free ends being attached to 5' rods actuated by springs,the tension of which can be varied as desired, and is exerted against pins or studs k It. To the top side of each of these levers I have bolted similar cams, N N, of a shape. as shown in Fig. 1,as having two active surfaces, h 1, respectively convex and concave. These cams engagewith short cylindrical studs or journals j j j formed at each end of the rectangular bars (I d d d at a fixed point and time in every rev- I 5 olution.

The operation of this machine is as follows, it being understood that the shafts B O D are in rotation as shown by the arrows.the fabric being fed by the drum on D over the revolv- 2o ing beds 1) b, &e., in the direction of arrow 1,

whence, after being linted, it is passed onto a receiving-roller. As the shaftB revolves the knife f, bolted on the rectangular bar (I, is thrust forward, sliding in the slots 0 c in 2 5 the disks M M against the action ofthe spring 6 by the shouldersjj engaging the upper convex surfaces, h h, of their cams N N, this curve being an arc of a circle eccentric from the central shaft, B. As the knife-stock G revolves, the bar dis advanced still farther until the shoulders j j reach the concave portion i i of their cams. Hence the knife is still advanced so that as it passes its lowest point in rotating it is in firm contact with the bed a. 3 5 Immediately after passing that point the shoulders j j have completed their passage across the concave portions i i, and leave them, when the bar (1 is suddenly retracted by the tension of the spring 0, and the knife f drawn into its normal or inactive position. To secure the requisite force with which the stroke of each knife shall press or bear upon the bed a the lever g, with its adjustable spring, is employed, the operation of which 5 is as follows: The shouldersjj of the bar carrying the knife are beneath the concave portion i i) of their cams, and when the knife reaches the cloth and meets the periphery of the bed b they are pressed up against-the cam and tend to lift the freeend of the levers g g, to which said cams are attached, against the tension of their springs and away from the pins 70 k. In a similar manner the shoulders jj fi, operating their knivesf f f", are suc- 5 5 cessively affected by the cams N N as the shaft 13 revolves, each knife meeting its own bed I) b b. By this continuous rotary motion much more work can be easily and expeditiously accomplished than by a single knife operating reciprocally. WVhen the knives are sharp, it is evident that amuch lighter stroke upon the fabric resting upon the beds is required to accomplish aproper result than in case the knives are dull; hence with sharp knives the tension of the springs acting upon the levers g g should b relaxed, whereas with dull knives the tension should be increased.

volving cylindrieal beds, preferably elastic,

the beds being of the same number as the knives; neither do I desire to be limited to the cylindrical form of the revolving beds, as they may be flat withslightly-concave faces which are of the same radius as the circle described by the knife in passing over it, and may be stationary or fixed.

A very evident modification of the specific arrangement of parts as herein shown would be in providing the cylindrical beds with shoulders, as shown atjjj f, causing the beds to approach the knives, which shall be fixed, but still rotate in the manner herein described, and similar results accomplished.

I claim.

1. In a linting-machine, the combination, with the linting-knives having a continuous rotary movement, of the cylindrical beds, preferably elastic, having a similar continuous rotary movement, the beds and knives being the same in number and adapted to co-operate with each other, substantially as stated.

2. In a linting-machine, the combination of the continuously-rotating knife-stock with the cams, whereby active movements ofthe knives are effected with respect to the beds, substantially as herein described.

3. In a linting-machine, the combination, with the linting-knives and their cylindrical beds, cooperating as herein described, of the cams affixed to the free ends of spring-actuated levers, whereby the force of the stroke of the linting-knives upon their beds may be varied more or less, as and for purposes herein described.

4. In a linting-machine, the knife-stock G, with its tangential slots 0 c, 850., adapted to permit of advance and return movement of the bars (I d, &c., carrying the knives ff, &c., for purposes stated.

5. In a linting-machine, the'combination, with the frame A, the rotary cylindrical beds 1) b, &c., andthe co-operating rotary springadjustable knivesff, 820., of the cams N N, attached to the free ends of the spring-actuated levers g g, substantially as stated.

6. In a linting-machine, the combination, with the rotary knives and their co-operating rotary cylindrical beds, of the feeding-drum, with its operating mechanism, whereby a slower motion is imparted to the fabric than is given to the knives to produce aproper pull or linting stroke upon its surface, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE EDWARD BROWNE.

. lVitnesses:

H. E. Loncn, A. F. HAYDEN.

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