US594685A - dtjstin - Google Patents

Description

(No Model.) 2 SheetsSheet 1.

J. F. DUSTIN.

BOX MOTION OPERATING DEVICE FOR LOOMS.

No. 594,685- Patented Nov. 30, 1897.

Witnesses. Inventor.

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Attorneya (No Model.) 2 Sheets-Sheet 2.

J. F. DUSTIN. BOX MOTION OPERATING DEVICE FOR LOOMS. 4

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lflIIlIIIIIIIl/I mlmw UNITED STATES PATENT OFFICE.

JOHN F. DUSTIN, OF FITCHBURG, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND THE PARKHILL MANUFACTURING COMPANY, OF SAME PLACE.

BOX-MOTION-OPERATING'DEVICEFOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 594,685, dated November 30, 1897.

Application filed J lly 29, 1897. Serial No. 646,329. (No model.)

To aZZ whom it may concern:

Be it known that-I, JOHN F. DUSTIN, a citizen of the United States, residing at Fitchburg, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Box-Motion-Operating Devices for Looms, of which the following is a specification.

The objects of my invention are, first, to

Io provide a simple, compact, and efficient boxmotion-operating device for looms, and in the second place to arrange the pattern devices or chains which control the harnesses and boX motion of a loom, respectively, so that I 5 said pattern devices or chains will move together, so that when one chain is advanced or moved back the second chain will be correspondingly shifted.

To these ends my invention consists of the parts and combinations of parts, as hereinafter described, and more particularly pointed out in the claim at the end of this specification.

In the accompanying two sheets of draw- 2 ings, Figure 1 is an end view of a loom, sufficient parts thereof being shown to illustrate the application of my invention. Fig. 2 is a detail sectional view to be hereinafter referred to. Fig. 3 is a front view of a boxmotion-operating device constructed according to my invention, and Fig. 4 is a fragmentary view showing the parts in a different relative position.

The ordinary forms of dobby-looms now 3 5 usually employed in cotton-weaving embody two'distinct pattern mechanisms. One pattern mechanism, through a harness-motion, controls the position of the warp-threads, and the other pattern mechanism is arranged to 40 control the box-motion which governs the weft or filling threads. These two pattern mechanisms which control the warp-threads and the weft or filling threads, respectively, have heretofore ordinarily been independently mounted, so that either of them could be advanced or turned back without affecting the other.

The pattern which is produced in a fabric Woven by a loom depends upon a correct joint action of the two pattern mechanisms which control the warp-threads and the weft-threads, respectively.

In ordinary constructions it has heretofore been necessary for the operator or weaver to independently adjust the two pattern mechanisms and to bring them into proper relation to each other before startingthe loom up after the same has been stopped for any reason. For example, in the ordinary forms of ginghams or fancy looms the warps are controlled by means of a dobby cylinder or chain and the box-motion is controlled by an independent pattern-chain located at some distance from the dobby, and which can be turned back or shifted without affecting the dobby. When the loom is stoppedfor example, by theweft 'stop-motionupon the exhaustion of a shuttle-bobbin, it is now the practice of the weaver to turn back the dobby-cylinder one peg and then by an inde- 7o pendent operation to turn back one peg on the pattern-chain which controls the box-motion. A new shuttle can then be introduced and the loom again started in operation. -If, however, it should happen that the dobby- 7 5 cylinder should be turned back one peg,while the pattern-chain which controls the box-motion should be perhaps turned back two pegs or not turned at all, and the loom should then be started up, it would result in the entire confusion of the pattern which is being produced by the loom.

The especial object of mypresent invention is therefore to provide a box-motion-operating attachment, which may be applied to the ordinary dobby-looms now employed in cot ton-weaving, so that the pattern chains or mechanisms which control the weft or filling threads and the pattern chains or mechanisms which control the warp-threads will move to- 0 gether, so that when one pattern device or chain is advanced or turned back the other chain will be correspondingly shifted; and my invention consists of a box-motion-operating device comprising a series of cams, lift- 5 ing-levers actuated thereby, hook-pieces connected to the cams, and actuating blades or sweeps arranged to be moved toward and away from each other.

The actuating blades or sweeps are preferwe ably moved in one direction by a cam and in the other direction by a spring. As thus constructed my device can be applied with comparatively little trouble to looms already in use, and as the actuating-blades are preferably operated by a camit can be readily timed to perform its function without interfering with the operation of the other essential parts of the machine. The operating sections or slots of the cams which actuate the liftinglevers are cut or shaped so that the liftinglevers will be locked when either in their raised or lowered position.

Referring to the drawings and in detail, A designates one of the side frames of a loom which may be of any ordinary or approved construction. J ournaled in the side frames A is a shaft 6, which may be driven in any of the ordinary manners. Secured on the shaft eis a gear a, forming a crank-disk which, by means of the pitman f, is connected to operate the levelers controlling the harness-motion. Also mounted on the shaft 6 is a bevelgear g, which meshes with and drives a bevelgear 72, secured upon a vertical shaft 1', which shaft 1' may be provided with a worm meshing with and driving a worm-wheel j. The worm-wheel j is loosely mounted on the shaft of the dobby-cylinder l and is normally held in engagement with a clutch k by means of a coiled spring, so that the dobby-cylinder Z can be turned by the hand-wheel m independently of its driving connections. These parts may be of any of the ordinary or approved constructions and need not be herein described at length.

Mounted on the dobby-cylinder Z isa main pattern-chain n, which controls the harnessmotion of the loom in the ordinary manner. Also mounted on the dobby-cylinder 1, near the inner end thereof, is a second pattern device or chain 10, which pattern-chain I employ for controlling in y boX-motion-actuatin g device. As illustrated, the pattern-chain 10 cooperates with a plurality of fingers 16, three such fingers being illustrated in the present instance. The fingers 16 are connected by means of lifting-wires 11 to hook-pieces 13, which are mounted in and form part of my box-operating mechanism 12. Bolted upon the face of the gear a is a face-cam 14, by means of which power will be applied to the box-motion-operating device 12.

The construction of my boX-motion-operating device is most clearly illustrated in Fig. 3. As shown, it comprises a bracket or framework 17 which may be bolted or secured to anyconvenient part on the framework of the loom. Mounted on a stud 40 are pieces 35, having cam-slots 36. Fitting into the camslots 36 are rollers 38, journaled on links 37, which are connected at their upper end to the lifting-levers 19. The links 37 are guided at their lower ends by slotted sections 39, engaging the stud 40. Connected to the ends of the lifting-levers 19 are connecting-pieces 20, adj ustably threaded into each of which is a lifting-rod 15. The liftingrods extend down to that part of the framework of the loom ordinarily occupied by the box-motion, and said lifting-rods may be connected at their lower ends either directly to operate the boxmotion or any form of multiplying device now ordinarily employed in connection with boxmotions.

As shown most clearly in Fig. 4, the camslots 36 are shaped at their ends so that when the parts are in the position illustrated in Fig. 3 the lifting-lever 19 will be locked in a raised position. The hook-pieces 13, which connect to the pivoted pieces 35, are provided upon their upper edges with abutments 24 and on their lower edges with abutments 25. The hook-pieces 13 are held in place and guided by means of a comb 23.

The actuating blades or sweeps 26 and 27 are carried by bell-crank levers 28 and 29, the lower arms of the bell-crank levers being connected by means of a pin 30, extending from the bell-crank lever 28 through a slot in the bell-crank lever 29. A coiled spring is connected at its lower end to the pin 30 and normally acts to open or separate the actuating blades or sweeps 26 and 27, as shown in Fig. 3. J ournaled in the bell-crank lever 29 in position to engage the face-cam 14, before referred to, is a friction-roll 34. \Vhen the cam 14 engages with and acts upon the friction-roll 34, the actuating blades or sweeps 2G and 27 will be moved toward each other. When the cam 14 passes out of engagement with the roll 34, the actuating blades or sweeps 26 and 27 will be moved away from each other by the spring 32. When a peg on the pattern-chain 10 passes under one of the hooks 10, the hook 16 ,throu gh its lifter-wire 11,Wi1l lower a hookpiece 13 so as to bring its lower abutment 25 into the path of the actuating blade or sweep 27. When the actuating blade or sweep 27 is shifted by the cam 14, it will move the hook piece 13 to the position illustrated in Fig. 3, thus lifting up the lifting-lever 19, which lifting-lever on account of the shape of the camslot 36 will be locked in its raised position.

If at any time the loom is stopped on account of the giving out of the weft-thread or for any other reason, the operator can turn back or advance the dobby cylinder Z by means of the hand-wheel m and the patterir chains '11 and 10 will move together, so that they will always maintain a correct cooperative relation and the loom will always be in condition so that when started up it will correctly weave a pattern.

In my companion application, Serial No. 622,621, filed February 9, 1897, I have shown a box-motion-operating device in which the lifting-levers are actuated by means of togglelinks, and in such a construction the parts were arranged so that a peg on the chain controlling the box-motion-operating device would cause a lifting-lever to be drawn down and a blank space on the pattern-chain would cause one of the lifting-levers to be raised.

When constructed according to my present invention, a riser or peg on the pattern-chain will cause one of the lifting-levers to be raised and a blank space on the pattern-chain will cause one of the lifting-levers to be lowered. This construction I have found to be preferable in practice, as there is less liability for mistakes to be made in making up the pattern-chains. Moreover, by operating the lifting-levers by means of cams I have provided a motion in which the power can be applied uniformly to the lifting-levers during their entire movement.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

In a device of the class described, the combination of pivoted cam-pieces 35 having cam-' slots 36, links 37, each having a projection engaging one of said cam-slots, said links 37 being guided at their lower ends, lifting-levers 19 actuated by the links 37, the cam-slots 36 being shaped to lock said lifting-levers in their raised position, hook-pieces 13, a pattern device controlling said hook-pieces, connected bell-crank levers 28 and 29 having actuating- blades 26 and 27, a spring 32 for normally separating said bell-crank levers, and a cam for moving said bell-crank levers toward each other, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN F. DUSTIN.

Witnesses:

RALPH E. THOMSON, HARRY G. TOWNEND.

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