US416625A

US416625A - George p

Info

Publication number: US416625A
Authority: US
Publication date: 1889-12-03
Anticipated expiration: 1906-12-03

Description

(No Model.)

G. P. HUTOHINS.

STOPPING AND BRAKE OPERATING MECHANISM FORLOOMS. No. 416,625. Patented Dec. 3, 1889.

K G y urck in;

N. PETERS. FhnIo-Lllhugnpher, Washingion, D. C.

UNITED STATES GEORGE F. HUTCHINS, OF wORcEsTER, MASSACHUSETTS, ASSIGNOR TO THE KNOWLES LOOM WORKS, OF SAME PLACE.

STOPPING AN D BRAKE-OPERATING M ECHAN ISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 416,625, dated December 3, 1889.

Application filed September 4, 1889- Sen'al No. 322,945. (No model.)

and Brake-Operating Mechanism for Looms 3 and I do hereby declare that the following is a full, clear, and exact description thereof, which, in connection with the drawings making apart of this specification, will enable others skilled in the art to which my invention belongs to make and use the same.

-My invention relates to looms, and more particularly to stopping and brake-operating mechanism for looms; and the object of my invention is to provide means by which the brake will be automatically released by the movement of the shipper in starting the loom.

-My invention consists in certain novel features of construction and operation of a stopping and brake operating mechanism, as will be hereinafter described,and the nature of the same indicated by the claims.

Referring to the drawings, Figure 1 shows in elevation portions of a loom suflicient to illustrate my invention applied thereto. Fig. 2 is a plan of a portion of the lay and breastbeam, showing the knock-off mechanism. Fig. 3 is an end elevation, looking in the direction of arrow a, Fig; 1, showing the connections to the brake-lever; and Fig. 4 is an end elevation, looking in the direction of arrow I), Fig. 1, showing the pulley, brake, and shipper. i

In the accompanying drawings,1 is the loomside; 2, the crank-shaft; 3, the bottom shaft; 4, the lay; 5, the crank-connector, and 6 the breast-beam. The pulley-shaft7 is mounted in boxes 8 in stands 9, bolted to the loom-side,

and carries on its outer end a brake-drum 10,

tight pulley 11', and loose pulley 12, retained on shaft 7 by collar 13. The opposite end of the pulley-shaft 7 is geared to the bottom shaft 3, and the bottom and crank shafts are geared together, all as usually arranged, the gearing being here shown by dotted lines 14, Fi 1.

The shipping mechanism shown is the same as that shown and described in United States readily compressed a distance equal to that PATENT OFFICE.

Patent N 0. 197,641, of November 27, '187 7, and consists of a shipper-handle 15, fast on the outer end of a rod'l6, which extends the length of the loom and is supported in bear ings in the loom-sides, and carries on its opposite outer end a second shipper-handle similar to the handle 15, except that it has no projection below the hub. By means of the handles 15 and connecting-rod 16 the shipping mechanism may be worked from either end of the loom.

Projecting below the hub of the shipperhandle is an arm 17, which carries a pin 18, which engages a slot 19 in the end of one arm of lever 20, pivoted at 21 on a stud fast in the loom-side. The other arm of lever 20 is jointed to shipper-rod 22, which may slide freely in a bearing 25, bolted to the loom-side and bearing 24 on stand 9. The outer end of rod 22 carries an ordinary beltrshipper fork 25, fastened adjustably by set-screw 26. Confined on rod 22 between collar 27 and stand 23.is a coil-spring 28, of. sufficient strength to be between the two positionsof the belt on the pulleys 11 and 12, and of sufficientstrength to shift the belt in the time required by the speed of the loom, the spring 28 acting to throw'the belt otf from the tight pulley 11 onto the loose pulley 12.

By reason of the opposition in the curvature of the arcs described bypiu 18 and point of lever 20 the pin slides in slot 19 a short 1 distance when those parts are rotated about their pivot-centers throughabout the angle indicated by the dotted lines 29, the pin 18 passing toward the lower end of the slot when it nears the line joining the centersof shaft 16 and stud 21 and toward the upper end of the slot 19 as it nears the extremes of the arcs described.

In the upper end of the slot 19 is formed a small depression 30, into which the pin 18 may drop at one extreme of the movement, preventing the pin from sliding back in the slot while the tension of the spring 28 is on the shipper-rod l6, and thus locking the parts in position with the belt upon the tight pulley 11.

The shipper-lever may be looked very deli- 10o cately or as securely as desired by varying the size of the depression 30.

A slight opposite movement of the lever releases the pin from the depression 30, when the spring 28 completes the shifting of the belt.

The releasing of the shipper-lever above described is accomplished automatically in practice through the protector mechanism and a knock-off lever 31, pivoted ona stand under the breast-beam and projecting out through the loom-side in such a position as to just engage the shipper-handle when the belt is shifted onto the tight pulley 11.

The protector-dagger 32 and feeler 33 are so set that when the box-binder 34 is pressed out by a shuttle the dagger clears the knockoff lever 31 as the lay beats up, and when the lay beats with empty boxes the dagger engages lever 31, throwing the pin 18 out of its depression and shifting the belt to the loose pulley 12.

Attached to stud 35, fast in stand 9, is a friction-band 36, which passes around the friction-drum 10, Figs. 1 and 4, and is attached at its opposite end to eyebolt 37, which is secured by nuts 38 to the end of frictionlever 39, pivoted at 40 on a stud fast in the loom-side. Friction-lever 39 extends to the front of the loom and terminates in a footplate 41, near which is an car 42, in which is fast stud 43, on which is pivoted connector end 44, into which rod is fastened by setscrew 46. (See Figs. land 3.) Rod 45 passes loosely through. a hole in stand 47, fast to the loom-side, and has confined upon it between stand 47 and set-collar 48 a coil-spring 49,

thus drawing down and tightening upon its drum the friction-band 36. The tension of the spring 49 may be adjusted by sliding the collar 48 on its rod 45, and the position of the friction-lever 39 and its connections with reference to the binding-point of the band is adjusted by nuts 38 on the eyebolt 37.

The rod 45 extends upward and terminates in a socket 50,.into which is fastened adj ustably by set-screw 51 a plate 52, which passes loosely through a slot in stand 53, fastened to the loom-side. Fastened by set-screw 54 into stand 53 is a bar 55, one end of which is shaped like a ratchet-tooth and projects slightly into the slot in stand 53. Cut in plate 52 is a notch 56, adapted to be engaged by the ratchet-tooth end of bar 55, by which the friction-lever 39 may be held in a de pressed position against the tension of spring 49, with the friction-band 36 slackened on its drum 10. Thenotch 56 is kept in engagement with bar 55 by the action of flat spring 57, fastened by set-screw 58 to the end of socket 50, the spring passing through the same slot with plate 52 and pressing upon hole in the-lower part of stand 53, and which just fills the space'between the plate52 and the knock-off lever 31 when plate 52 is in engagement with bar 55 and the loom is shipped on.

When the loom protects as the lay beats up,

swinging the knock-off lever 31 to disengage the shipper-lever, the rod 59 pushes the plate 52 off the bar 55 against the tension of the spring 57, allowing spring 49 to operate the brake.

When the loom is stopped by throwing the shipper-lever by hand, the brake is not set; but whenever the loom knocks off automatically the brake will be set, and before the loom can be started again the brake must be released, which has heretofore been done by pressing down the friction-lever 39 by the foot until the plate 52 catches'on bar 55, and before the shipper is thrown on.

on fancy looms the head motion is necessarily on the opposite end of the loom from the pulley and shipper motion. WVhenever the loom is stopped 011 account of mispicks, it is necessary for the weaver to be at the head end tocorrect the pattern, and this necessitates traveling the length of the loom to release the brake before the loom can be shipped on. To avoid this I have added to the mechanism already described the following parts: An arm 60 is pivoted on stud 43 beside connector 44 and extends upward and carries fast in its upper end a rod 61, which terminates in a hook 62, which comes in position to be engaged, as will be described, by

joint-pin 63, which connects lever 20 to shipper-rod 22, and which projects from the joint for that purpose. Fast in ear 64 on the upper end of arm 60 is a light flat spring 65, which extends downward and terminates between the points of two other similar springs 66, which are fastened in an arm 67, which is itself fast on stud 43 by means of set-screw 68. (See Fig.

The several parts are shown in Fig. 1 in the positions they occupy after the loom has been stopped automatically by the knock-0E.

In shipping the loom on the first part of the forward movement of handle 15 causes the joint-pin 63 to press the .hook 62'downward, which by its connection to frictionlever 39 compresses spring 49 till plate 52 catches in its retaining-notch, when theloom is free to be started by the continued movement of the shipper-lever. WVhen pin 63 reaches the lowest point in the are described by it, at-or before which time the brake-plate 52 must be depressed to the point of engagement with its retaining-bar 55, the springs 65 and 66 allow the hook 62 to be carried forward till joint-pin 63 slips out of its seat in the hook 62, when the said springs return the hook 62 to its normal position, which is such as to hold it against the joint-pin whenthe loom is shipped ofi. The clearance between the joint-pin 63 and its seat in the hook 62 is just sufficient to allow the pin to pass the 7 point 70 in case the brake-operating spring 49 completes its action before the shipper-rod 45 and belt-shifter get home.

I have shown in the drawings and described my invention applied to tight and loose pulley driving; but it can be applied and used with equal advantage with friction clutch pulleys, if desired.

It will be understood that I do not limit myself to the use of the shipping mechanism shown in carrying out my invention, as my improvements may be applied equallywell to any shipping mechanism which employs the shipping-lever jointed to the rod similar to 20 and 22, without reference to the method of locking the shipper on or of connecting to the knock-oft.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In stopping and brake-operating mechanism for looms, the combination, with the friction-drum, band, lever, operating-spring, rod, detaining-catch and spring, pivoted spring-confined releasing-hook, the hook-confining springs, shipper-lever, joint-pin, and

shipper-rod, of the driving, shipping, knockoif, and protector mechanisms and the lay,

substantially as shown and described.