US657691A - Stop-motion for looms. - Google Patents

Description

No. 657,69l. Patented Sept. ll, I900. J. C. COTTAM &. J. BENTLEY.

STOP MOTION FOR 'LOOMS.

(Application filed May-18, 1800.) (No Model.) 5 Sheets-Sheet I.

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(No Model.)

Patanted Sept. II, 1900. J. C. COTTAM &. J. BENTLEY.

STOP MOTION FOR LUOMS.

(Application filed May 18, 1900.)

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N0. 657,69l. Patented Sept. ll, I900. J. C. CGTTAM &. J. BENTLEY.

STOP MOTION FOR- LDOMS.

(Application filed May 18, 1900.)

' 5 Sheets-Sheet 3.

(No Model.)

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Patented Sept. ll, I900. J. C. COTTAM & J. BENTLEY;

STOP MOTION FOR Looms.

(Application filed May 18, 1900.)

(No Model.) 5 Sheets-Sheet 4.

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No. 657,691. Patented Sept. l|, I900.

J. C. CUTTAM & J. BENTLEY. STOP MOTION FOR LOOMS.

(Application filed May 18, 1900.) (No M dei.

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UNlTlED STATES PATENT OFFlCE.

JOHN CHARLES COTTAM, OF BRADFORD, AND JOSEPH BENTLEY, OF

SHIPLEY, ENGLAND.

STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 657,691, dated September 11 1900.

Application filed May 18, 1900.

To all whom it may concern.-

Beit known that we, JOHN CHARLES COT- TAM, residing at Bradford, and JOSEPH BENT- LEY,residing at Shipley,in the county of York, England, have invented certain new and useful Improvements in the Construction of Stop- Motions for Looms, (for which we haveapplied for provisional protection in Great Britain, No. 19,507, dated September 28, 1899,) of which the following is a specification.

This invention has for its object certain improvements whereby the friction on the shuttle between the fixed flange at the front of the shuttle-box and the swell at the back or opposite side of the shuttle-box is reduced at the time when the shuttle is in the position to be driven from one shuttle-box to another, and thereby to proportionately reduce the Wear and tear of the cams, picking-sticks, straps, and pickers of the loom utilized for operating the shuttle.

In describing our invention in detail, reference is made to the accompanying sheets of drawings, in which- Figure 1 represents the front elevation of such portions of a weaving-loom as are required to explain our invention, which is more particularly shown in the detached details, hereinafter explained. Those parts of the loom not required for explaining our invention are of the ordinary and well-known construction and are omitted from the drawings. Fig. 2 represents the end elevation of a loom with the stop-fingers held clear of the stop-blocks. Fig. 3 is a section through the loom on line a b of Fig. 1, with the stop-rod fingers in contact with the stop-blocks. The remainder of the figures are detached details drawn to an enlarged scale. Fig. 4 is a detached detail view showing the application of a plate or flat spring for forcing the stop-rod fingers into the position shown. Fig. 5 is an end view of the lay-beam, with the stoprod fingers held clear of the stop-blocks Fig. 6, a back view of one end of the lay-beam; Fig. 7, a plan of one end of thelay-beam, and Fig. 8 a section through the stop-rod shaft with hooked arm and a portion of the spiral spring on the opposite side of the stop-rod shaft to that of the stop-rod fingers. Fig. 9 is an end view of the stop-rod shaft with the Serial No. 17,134. (No model.)

hooked arm and a portion of the spiral spring on the same side of the shaft'as the stop-rod fingers. Fig. 10 represents a back view, and Fig. 11 a plan, of a portion of a lay, showing a modification. Figs. 12 and 13 represent a back elevation and aplan of a further 1nodification. Figs. 14 and 15 are similar views of a still further modification.

In carrying out our invention the vertical picking-shafts A, picking-sticks B, lay-beam O, and other parts of the loom not particularly mentioned in the following-description are of the ordinary construction and operated in the usual manner. .A shuttle-box D is formed at each end of the lay-beam C, as usual, and at the back of each shuttle-box D is a bar E, fulcrumed on a pin at E. One

side of the said bar projects a short distance into the interior of the shuttle-box D and there forms a swell at E The fulcrumed barE may extend on the back of the laybeam 0 and terminate with an arm at E To the under side of the lay-beam C is mounted a shaft G, as usual, commonly called 'a stop-rod, and to this shaft are secured arms H, terminating vertically, one arm near to each end of the said shaft, and on the said shaft are formed stop-fingers J, as usual, which are held in the position shown by Figs. 2 and 5that is, raised clear of the stopblocks Jby the contraction of the spiral spring K, held in tension between a hooked arm G, projecting from shaft G, and an extension G secured to one ofthe oscillating arms 0, supporting the lay-beam C.

On the lay-beam 0, moving toward the front of the loom in the direction of the arrow in Fig. 2 for beating up the weft, a short arm L, secured to and projecting from shaft G, comes in contact with one end of a lever L, (shown by Figs. 3 and 4,) and unless the shaft G is held stationary in the manner as hereinafter described during the beat-up of the weft the action of the spiral spring S or fiat plate-spring S, applied in the manner shown, will cause the shaft G to slightly rotate in its journals and the stop-fingers J to descend from the position shown by Figs. 2 and 5 to that shown by Figs. 3 and 4, and thereby stop the loom by the stop-fingers J comingin contact with the stop-blocks J; but when there is a shuttle in either shuttle-box the stop-fingers J are held clearof the stop-blocks J, as shown by Figs. 2 and 5, and the friction removed from the shuttle-box D in the following manner.

Each shuttle-box D is provided with ordinary picker, which slides on rod M an is operated in the usual manner, and when a shuttle is driven home into a shuttle-box D at either end of the lay-beam C it is compressed between the swell E on one side of the shuttle-box and the fixed flange D on the opposite side of the shuttle-box, thus moving the bar E backward to the position shown by dotted lines in Fig. 7, the arm E attached thereto, being also moved to the po sition shown by dotted lines, thus propping the arms H, and thereby retaining arms H and shaft G in a stationary position, so that on the lay-beam C moving forward in the, direction of arrow in Fig. 2 the short arm L on coming in contact with the lever L cannot operate the lever and shaft G in the manner as herein before described. Consequently the said shaft and stop-fingers J are held in the position as shown by Figs. 2 and 5 by the end of arm E engaging with vertical arm H in'a manner so as to act as a prop to the vertical arm H, and thereby prevent any movement of the shaft G in the direction for the stopfingers J to engage with the stop-blocks J, and by the arm E propping the vertical arm H in the manner described the pressure of the spiral spring S, Fig. 3, or flat plate-spring S, Fig. 4, acting through the short arm L and vertical arm H against the end of arm E forces the fulcrumed bar E backward a distance that the swell E is clear of the shuttle within the shuttle-box D, thereby removing from the shuttle the friction hitherto binding it within the shuttle-box D, as is the case when the vertical arm H acts direct upon the fulcrumed bar E in the manner as hith erto. Thus by our combination and arrangement of mechanism the power requiredto propel the shuttle across the loom from one shuttle-box to the other is considerably reduced, consequently reducing in a proportionate degree the wear and tear of the picking mechanism.

Fig. 9 is an end view of the stop-rod shaft with the hooked arm and a portion of the spiral spring on the same side of the stop-rod shaft as the stop rod fingers. When the hooked arm G is on the same side of the stoprod shaft G as the fingers J, the said fingers are held in the position shown by Figs. 2', 5, and 9 during some portion of the reciprocating movement of the lay-beam O by the small pulley G: on end of lever G secured to stoprod shaft G by passing over the upper surface of bracket G, secured to some convenient part of the loom, such as to one of the end frames. The lay-beam O on moving in the direction of arrows in Figs. 2 and 9 when near the termination of the forward motion for beating up the weft the before-mentioned small pulley G2 will leave the upper surface of bracket G and if the vertical arms H are not held back in the manner as before described the spiral spring K is at liberty to contract and bring the fingers J into the position shown by Figs. 2 and 4, and thereby stop the loom on coming in contact with the stop-blocks J; butif the arms H are propped or held back the stop-fingers J are held clear of the stop-blocks J, as shown by Figs. 3 and 5.

Fig. 10 represents a back view, and Fig. 11 a plan, of one end of the lay-beam 0, showing a vertical arm H constructed in a modified manner, by which the upper portion of said arm at H is pivoted at H and held in the position shown by a spring S The modified arm is attached to the shaft G and operated in the manner as before described; but should the shuttle be'only partly driven into the shuttle-box D, so that the bar E is not moved back the required distance for the arm E to properly engage With'and prop the said vertical arm, but only with the edge thereof, the upper portion of the arm at H will yield in the direction of curved arrow, thus allowing the arm E to pass and not hold or prop back the arm H and the stop-fingers J to come in contact with the stop-blocks J and stop the loom in the manner as hereinbefore described 3 but should the arm E hold back or prop the vertical arm at H then the stopfingers J are held up clear of the stop-blocks J and the binding of the shuttle within the shuttle-box D removed.

Figs. 12 and 13 represent a back elevation and plan of one end of the lay-beam C. In this case instead of the fulcrumed bar E being continued and terminating with an arm E ,'as before described, we utilize a bar E of the ordinary description and apply a short lever N, 'fulcrumed on a pin E. The application of this lever, as will be readily understood, is the same in eifect as the mechanism before described. On the fulcrumed bar E being moved backward by the shuttle entering the shuttle-box D the short lever N is op'eratedin the direction that one end of said lever is in the position for holding back or propping the vertical arm at H, and thereby removing the frictional binding of the shut tle within, the shuttle-box D, also preventing the stop-fingers J coming in contact with the stop-blocks J Figs. 14 and 15 are similar views to those last described, showing a back elevation and plan of one end of the lay-beam, and Fig. 15 is a side elevation of our modified arm. According to this arrangement we move the vertical arms H farther from the ends of the lay-beam O and mount a lever P on a stud supported by bracket P, secured to the laybeam 0. One end of this lever P engages with the back of fulcru med bar E. The said lever has a projecting arm P which, as will be readily understood, when the fulcrumed bar E is forced backward by the shuttle ent'erint; into the shuttle-box D the end of lever P in contact with the fulcrumed bar E is also forced backward and the arm P of lever P moved into position for engaging with the upper portion H of vertical arm H, and thus hold or prop the same in the manner as before described, so that the frictional binding of the shuttle within the shuttle-box is removed and the stop-fingers J prevented from coming in contact with the stop-blocks J, and thereby stopping the loom.

What We claim as our invention is 1. In combination, the swell arranged at the shuttle-box to be operated by the shuttle, a stop-block and stop-finger, means for operating the stop=finger, and a device interposed between the means for operating the stop-finger and the swell for cont-rolling the action of said finger, said operating means acting through said device to relieve the shutoperating means acting through said device to relieve the shuttle from pressure of the swell, substantially as described.

In testimony whereof We have hereunto set our hands in the presence of two witnesses.

JOHN CHARLES COTTAM. JOSEPH BENTLEY. Witnesses:

JOHN GILL, GEO. F. RAYNER.

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