US471076A

US471076A - Roller cotton-gin

Info

Publication number: US471076A
Authority: US
Publication date: 1892-03-15
Anticipated expiration: 1909-03-15

Description

(Np Model.) 4 sneet-sheet -1.

W. DEARBORN ROLLER COTTON GIN.

No. 471,076. Patented 1v'.['1.r.`15, 1892.-

(No Model.) '4 Smets-sheet 2. W. DEARBORN. RLLER COTTO-N GIN.

No. 471,076.. Patented Mar. 15, 1892.

||l ll l! Il Il Il Il ll'll Il Il ll Il Il 1mm (No Model.) 4 Sheets-Sheet 3.

W. 11E-11111301111. ROLLER COTTON GIN.

No. 471,076. Patented Mar. 15,1892.

WIT Esa-5- y I 4 sheets-'sheet 4.

(No Modl.)

W. DEARBORN. ROLLER COTTON GIN.

No. 471,076. "Patented Mar. 15, 1892.

Nirnn STATES PATENT Ormes.

VYMAN DEARBORN, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-HALF TO CHARLES RIPLY, OF SAME PLACE, AND ALBERT W. MANN, OF MALDEN, MASSACHUSETTS.

ROLLER COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 471,076, dated March 15, 1892.

Application filed November 26, 1890. Serial No. 372,671. (No model.)

To all whom it may concern:

Be it known that I, VYMAN DEARBORN, a citizen of the United States, and a resident of Boston, in lthe State of Massachusetts, have invented a new and useful Improvement in Roller Cotton-Gins, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings,

forming a part of this specification, in ex- Io plaining its nature.

This improvement relates to the roller-gin; and it consists in a new combination and arrangementof parts, in new and improved forms common to some of the parts, and a new and improved connection of the moving parts with each other.

In the drawings, Figure l is a side elevation of a gin of my improved construction. Fig. 2 is a plan thereof. Fig. 3 is a section zo through the center of the gin of plan parallel to the elevation shown in Fig. l. Fig. 4. is a longitudinal section of an improved way of constructing the roller. Fig. 5 is an end eletion of the roller, showing the mode in which the covering of the roller is tightened and how the surface of sectional spirals is produced. Fig. 6 is a detail drawing of the means by which the lever t" is supported.

In the drawings, B is the frame of the ma- 3o chine, and A is the driving-wheel, on the axis of which is mounted the roller C. bar, the top of which appears in Fig. l, is shown in Fig. 3 in section at E. This presserbar is made of sheet-steel, and is fastened to a bar at its lower edge, which baris united to the frame at its ends on each side by bolts e4. A shaft e runs through the frame from side to side and has mounted upon it at frequent intervals eccentrics e', by which the edge of 4o the presserbar may be adj usted to and from the periphery of the roller C. A rod e5 runs through the machine from side to side behind the presser-bar, and has on it at frequent intervals eccentrics e6, which bear against the back of the presser-bar. The position of this rod may be adjusted by the handle e7. Thus this presser-bar is fast to the frame at its lower end and is pressed hard in both directions above its lower edge by the eccen- 5o trics e e6, and so may be retained in any de- The presser- 4 sired position. This construction and ara rangement of the presser-bar forms in part the subject of an application divided from the present application, dated August 3, 1891, Serial No. 401,562, and pending simultaneously with it.

The clearers D reciprocate on an arc directly in front of the presser-bar and are formed with knife-edges, as shown in Fig. 3. These clearers D are formed of one piece of 6o bent steel, as shown in Fig. 2, and have journals, as shown in that gure, which are mounted in sliding bearings d, which bearings are adapted to be clamped to the frame when in the proper position. The arms of the clearer D are welded to the journals on which it oscillates, andthe center of oscillation is a little above the level of the center of rotation of the roller C, whereby the center of oscillation of the clearer D, the upper edge 7o of the presser-bar E, and the center of rota- 'tion of the roller C are brought into nearly the same right line,"and as the presser-bar stands nearly at a tangent with the roller C at its horizontal diameter the nip of the roller C upon the fiber is a little tighter than it would be if the edge of the presser-bar did not stand quite so high, and at the saine time, by thelocation of the axes of oscillation of the clearers at a point higher than the axis 8o of the roller C, a better combing action is given to the clearer-blade, and the seeds are drawn away from the presser-bar and from the roller C, insteadv of being thrown down almost parallel to it, as was formerly done in S5 gins where the clearers vibrated in a right line governed more or less by guides or parallel links. The arms of the clearerD, it will be seen, are less than once and a half the radius of the roller C, which causes the edge 9o of the clearer to move rapidly away from the presser-bar as it descends. This short-arm clearer is thought to be a great advantage.

In order to move the clearers with great accuracy into position, a bearing d is mounted on the frame, through which passes a screw provided with acrank-handle d2. This screw lays hold of the sliding box d and moves it to and fro, and it may be set in any proper position by a nut. (Shown in Fig. l.) By this roo contrivance either end of the clearers maybe moved toward or from the roll, and the clearer may be very accurately adjusted to its position. The journal ot' the clearer is carried through the bearing (Z and terminates in a boss f4. (Shown in Fig. 2.) Upon the top of this boss is mounted in standards a worm r, and the shaft ol' this worm terminates in a crank g.

Centered upon the journal of the clearer is a rocker-arm F, which terminates upward in a large eye, the upper edge of which is cut into teeth adapted to engage with the worm-gear. This rocker-arm F is adjustable with relation to the clearers D by moving the worm-gear when the nuts are loosened which fasten it to the boss f4. Two curved slots pierce this arm near its outer edges, which curved slots are marked f on Fig. 1. A couple of clamping-screws j" pass through these slots and engage with the boss beneath them. It is obvious, therefore, that by loosening the clamping-screws and moving the wormgear the angle at which the horizontal arms of the clearers D stand with relation to the rockerarm F canbe adjusted, and when the proper angle has been obtained they can be clamped together. OE course any other ordinary system of clam ping will. answer in this place and any other method of tine adjustment; but the worm gear and wheel upon the whole seem to be the simplest and most delicate arrangement for this purpose.

The rocker-arm F is slotted at its lower end, as shown at F3, so that a greater or less throw may be given to the clearers D with the same length of driving-crank. The driving-wheel A meshes with the pinion' t' upon the same shaft as the second wheel I, and this second wheel I meshes with the pinion f3 on the shaft of the crank-wheel F. This crankwheel F carries in its face a wrist-pinfs,which takes hold et a box in aslotin the end of the link II?. This box is pressed into position in one direction by the spring ff and in the other direction by an adjusting screw flo. The spring f is strongly compressed at all times; but the position of the box in the length ot' the rod may be slightly adj usted by aid ot the setscrew. The spring fg takes up some portion of the shock arising from the rapid reversal of the link F2 when the machine is run at high speed. The link F2 is slotted at F1, as shown in Fig. l, and is united with the arm F by a bolt passing through slides in the two slots F3 F4.

The mechanical construction of this device may be as follows: A slide is mounted in each slot F3 F4, which slide has a hole in it about the center and is provided with a screw-neck around the hole on one side and is form ed with a flange on the other or with a bevel upon its edges, which would serve the purpose of the flange referred to. A flange-nut run down from the neck will engage the surface of the arm or link around the slot, and by this means the slide may be clamped at any position in the slot. The two necks around the hole would point in opposite directions. Then the bolt, being passed through all from side to side, would make the pivotal connection. The bolt might be iixed to one slide, if desired, and the motion all take place in the other. Constructions of this sort are not unusual mechanical contrivances. The circle made by the wrist-pin f8 will of course be a circle of unvarying radius. The length of the chord of the are described by the point of connection between the rocker-arm F and the link f2 will therefore be a constant; but as the adjustment of the rocker-arm F with the clearers D may be varied and will require to 1oe Varied from time to time according to the conditions of the work and according to the wear ot' the edges of the presser-bar and the working edge of the clearers it is necessary to have the slot F1 to accommodate this adjustment, and as, also, on different kinds of cotton it is desirable at times to have different lengths of stroke to the clearer it is desirable to slot the lower end of the rocker-arm F, in order that the leverage of this arm may be adjusted. This arm F acts as a pendulum to balance the clearers D and to carry the necessary vibration of themachine downward. Thejoint between the rocker-arm F and the link F2 will be seen to be a joint otgreat pou er, and it may be somewhat varied in construction from this without varying the principle of operation of the machine.

The plan, Fig. 2, shows fulcrum of the 1ever i', and Fig. 3 shows the wheel I and pinion fi as supported in a frame, and the detail of the lever fr" is shown in Fig. G. The frame which carries the wheel I and vpinion Ai forms an offset of the lever 'i'. This frame is slotted at its upper end anda bolt r" with a clampingnut or a clamping-screw t" passes through the slot and fixes the position ot' the lever i at any convenient point. This is not au unusual method of inserting change-gears in a machine.

The intermediate gear I and its pinion `i may be changed in order to change the speed of the clearers without changing the speed of the roll (I, it' this should be desired.

In order to hold upon the liber ot the cotton it has been found convenient to provide spiral groo\'es in the surface of the roller, and the best material hitherto in use for covering rollers has been a canvas fabric, some thing like packing, made up of several thicknesses of canvas cemented together by indiarubber. I propose to use strips ot this fabric upon the exterior ot' the roller for its surface and to put them upon the roller parallel to each other; but I make my roller dil'terent from ordinary rollers, as shown in Figs. et and 5. In these C is the shaft. At one end of this shaft a head G is fastened by a spline. fooden thimbles II are then slipped upon the shaft, and these wooden thimbles are fitted accurately against each other, but are not splined to the shaft. Another head IOO IIO

K is fitted on the opposite end of the shaft from the head G, and this head is not splined to the shaft. A plate L (shown in plan in Fig. 5 and in section in Fig. 4) is fitted upon the shaft and is splined to it. This plate LI ca rries in a recess a pawl P. The inside wall of the head K, which surrounds the recess into which the plateL fits, is provided with internally-projecting ratchet-teeth, with which the pawl P is adapted to engage. It will be seen that this construction allows the head G and the plate L to move in unison,while thehead K is not obliged to move with them. rlhe covering' of the roll, made into strips of proper length and Width, is then laid onto the roll, the strips being placed side by side, and t-hese strips are securely fastened at one end to the head G and at the other end to the head K. This may be done by means of straps placed on their exterior, which clamp them down to the heads G and K, or by pins or nails, which unite them to these heads, or in any other appropriate way. If now onevof the heads be held stationary and the other rotated round the shaft in such 'direction that the ratchetteeth will slip upon the pawl or the pawl slip upon the ratchet-teeth, the strips of covering, which were in the beginning parallel to the shaft,will be twisted upon it so as to lie around it in spirals, and thus I shall have a series of spiral grooves considered necessary for the roll of the roller C.

It will be noticed that wheel A drives the crank-wheel F by means of an intermediate gear and pinion. Itis obvious that this is only one form of driving the wheel F and that more intermediate gearing could be used, or that thewheel A could drive the crankwheel F directlyinstead of indirectly, audit.

is also obvious that whether the intermediate gearing were used or not the combination of the driving-wheel A and the crank-wheel F would be an equivalent combination.

I claim as my invention and desire to secure by Letters Patent of the United StatesV l. The combination, in a roller-gin, of the driving-wheel A, the shaft driven thereby, the roller C, mounted upon saidfshaft, the crank-wheel F, driven from said wheel A, the gearing connecting said wheel A with said crank-wheel F', the link F2, reciprocating from said crank-wheel F', the rocker-arm F, driven by the link F2, the clearer D, driven by said rocker-arm, and the presser-bar E, all arranged and operating substantially as and for the purpose described.

2. In a roller-gin, the combination, with the clearer D, of the rocker-arm F, having slots f therein, and with means for adjusting saidl rocker-arm F around the center of motion common to said clearer D and rocker-arm F,

and with the boss f4, and clamping-screws f', substantially as and for the purpose described.

3. The roll containing the combination ofthe head G, firmly fastened to the shaft, the thimbles H and head K, not fastened to the shaft, but provided with a ratchet, the pawlcarrying plate L, fastened to the shaft, the pawl P, the shaft C2, and the covering applied in parallel strips, substantiallyas and for the purpose described.

4.. The roll containing the combination of a shaft, a head fixed upon the shaft, another head not fastened to the shaft, but provided with a ratchet, a pawl-carrying plate fastened to the shaft, a pawl, a series of thimbles between the heads, and a covering applied in parallel strips and fastened to the heads, the said covering being stretched and arranged in spiral form around the thimbles by twisting the movable head,substantially as herein shown, and for the purpose stated.

5. The combination of the clearer D and rocker-arm driving the same, the said rockerarm being provided with means for angular adjustment with relation to the said clearer D with the crank-wheel F", and with the slotted arm F2, which drives said rocker-arm F,

whereby the angular adjustment of the clearer D to the rock-shaft may be varied without varying the length of the arc of motion ofV the clearer-blade, substantially as and for the purpose described.

6. The combination of the clearer D, the arbor on which it oscillates, the wheel F', and the rocker-arm F, which drives said clearerD by means of said arbor on which the clearer D oscillates, which rocker-arm F is slotted at its lower end and there combined With the slotted link F2, which connects with the wheel F, whereby the angular adjustment of the clearer D with the rocker-arm F may be varied and the length of arc described by the clearer-blade may also be varied, substantially as and for the purpose described.

7. The combination ,of the slotted link F2 with a wrist-pin box mounted in a slot of said slotted link F2, which wrist-pin box takes hold of a crank-pin in the face of the crank-wheel F and with the spring f, interposed between said wrist-pin and the body of the slotted arm F2, and with the adj usting-screw flo, adapted to adjust the position of said wrist-pin box in the slot of said slotted arm F2 against the tension of the spring f9, substantially as and for the purpose described.

F. F. RAYMOND, 2d,

J. M. DoLAN.

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