US570738A - Electromagnetic warp stop-motion for looms - Google Patents

Description

(.No Model.)

. A; o. SHUT-TLEWORTH,

ELECTROMAGNETIC WARP STOP MOTION FOR 1100MB.

P atented No-v. 3, 1896.

INVENI'OR WITNESSES:

mus PETERS cow, muroLrr-m, wasnmemn. n. c.

UNITED STATES PATENT OFFICE.-

ALPHEUS O. SHUTTLEYVORTH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GEORGE DRAPER' 8: SONS, OF HOPEDALE, MASSACHUSETTS.

ELECTROMAGNETIC WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 570,738, dated November 3, 1896.

Application filed April 30,1894. Serial No. 509,446. (No model.)

To all whom it may concern.-

Be it known that I, ALPHEUS C. SHUTTLE- WORTH, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvements in Electromagnetic WVarp Stop-Motions for Looms; and I do 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 the letters of reference marked thereon, which form a part of this specification.

This invention has reference to a device for automatically operating the stopping mechanism of a loom electrically at the breaking or sagging of any of the warp-threads.

' The invention consists in the use of a heddle-frame for the wire heddles, provided with either one or two permanent magnets, but where a single permanent magnet is used the heddle-frame is provided with a partiallyinsulated heddle-shaft. The aforesaid parts operate in conjunction with an electrical current by means of the 'heddle-wires coacting with an electromagnet and such mechanical parts are arranged to displace the shipper-lever from the keepernotch, and thereby stop the loom. v 7

I have illustrated the invention by drawings herewith, in which Figure 1 is a side elevation, partly in section, of a form of loom, showing the principal parts of a loom, the electrical connections, and mechanical means employed in moving the shipper-lever. Fig. 2 is a face view of a heddle-frame constructed with a single permanent magnet and illustrating the positions occupied by the electrical and mechanical parts directly associated with it. This figure also shows the two positionsof the wire heddles when the heddle-frame is at its highest position. Those wire heddles carrying broken or sagging threads are shown clinging to the permanent magnet. Fig. 3 is a similar view showing the lowest position assumed by the heddle-frame and provided with but a single permanent magnet, illustrating also the positions of the immediately-associated electrical and mechanical parts used in connection with it, also showing the two positions of the magnets, this View showing also the electrical and mechanical parts operating with it. Fig. 6 is a vertical section at y 'y of Fig. 5. Fig. 7 is an enlarged cross-section of a permanent magnet. Fig. 8 is an enlarged cross-section of the partially-insulated heddle-shaft. Fig. 9 represents a single heddle-wire. The heddle-shafts are shown in cross-section in the eyes thereof.

Similar letters refer to like parts.

In the drawings, A represents the frame of a loom; B, the heddle-frames; M, the warpbeam; S, the lathe; R, the whip-roll; H, the treadles; K, the shipper-lever; c, the wire heddles, and (Z the warp-threads. All of the mechanical parts referred to are constructed and similarly used as in the ordinary form of a strong permanent magnet, and so is the'bottom rail b when constructed in the form of the modification, Fig. 5.

The two heddle-shafts e 6, upon which the wire heddles c are strung when using a single permanent magnet, as in Figs. 2 and 3, differ from each other, 6, located in the'frame at the top, being made in the form of an inverted V. The entire surface of the upper bar 6' is insulated, as e, excepting the inverted-V-shaped portion. (See Fig. 8.) The bottom shaft 6 is of the form used in all heddle-frames, not being in any manner insulated from the wire heddles 0, but they are directly connectedby IOO The connection Z may be made to any number of heddle-framcs from a parent stem leading to the electric battery and thoroughly flexible in order to allow independent movement of any of the series of heddle-frames.

Secured firmly to the loom-frame A is a plate 9, corresponding in width to the combined thickness of the number of heddleframes used, and it is constructed with flanges g projecting at a right angle from its face at its extreme upper and lower ends, the upper flange engaging the spring-arm 71, connected to the permanent magnet b, when the heddleframe is at its highest position, and the lower flange g engaging the spring-arm 02, connected to the upper partially-insulated heddle-shaft e at the lowest position assumed by the heddle-frarne. These shafts and springarms are constructed and act similar in each of the heddle-frames in use where a single.

permanent magnet forms the top rail of the heddle-frame.

An electromagnet O is located on the frame of the loom in proximity to the shipper-lever K and the lathe S. The said lathe is provided with a slotted plate 3 for engaging the lever 4', supported normally by the spring 'U. The lever 0- has pivoted to it a foot-piecet directly over the electromagnet 0.

As before stated, an electric battery or other source of electricity to operate the device is shown. located at L and connected by Z through the electromagnet to the flanged plate g, secured on the loom-frame, and the opposite side of the battery is connected by wires Z to the heddle-frames.

At the highest position of a heddle-frame all of the heddle wires 0 holding sound threads rest on the inverted-V-shaped edge of the partly-insulated heddle-shaft e, and all those heddle-wires c carrying unsound or broken threads will adhere to the top magnet, being attracted by the magnetism, thereby completing the electric circuit through the arms and upper flange of the plate g, through the electromagnet to the battery.

At the lowest position of the heddle-frame all wire heddles a holding sound threads will be forced against the permanent magnet b and away from the partially-insulated heddle-shaft e by the tension of the warp-threads (Z, and all those wire heddles marked 0 carrying unsound or broken warp-threads will instantly fall by reason of their own gravity on the shaft 6, thereby completing an electric circuit by a similar engagement of the springarm of the partially-insulated heddle-shaft e engaging with the lower flange of the plate 9 in a similar manner and means, as before explained. v

When either of the circuits above described is formed, the electromagnet being in the circuit attracts the pivoted plate t, connected to the spring-arm r in line to engage the projection r by the slotted plate 8 and force the nose of the spring-arm 7' against the proj ection 7; on theshipper-lever K, andthereby dislodge the latter from the keeper-notch, so that the loom will be able to make buta single pick when the circuit is completed.

The replacing of the shipper-lever inits proper position to run the loom will arrange the knocking-off spring-lever r instantly in place, ready to be again operated upon. The

spring-lever 0', when struck by the lathe,

slides forward in the keeper n.

For weaving with heavy warp-threads and to insure greater efliciency in the completing of the electric circuits I dispense with the partly-insulated heddle-shaft e, using uninsulated and similarly-shaped shafts for the heddle-wires, in which case the bottom rail 12 of each of the heddle-frames would also be constructed with a permanent magnet, the same as the top rail 19. (See Figs. 5 and 6.) Such construction would simply require the lengthening of the plates g and supplying the lower permanent magnet b with a spring-arm n, the same as the top magnet, and the circuits produced at the highest position of the heddle-frame would be through the wire heddles 0, plate g, and electromagnet O, by means of the wires, to the battery at one end, and the wire heddles, lower heddle-shaft c, and wires Z to the battery L upon the opposite end.

I claim- 1. In an electric warp stop-motion for looms, the combination with a heddle-frame, of a permanent magnet carried thereby, a series of heddles normally held out of contact with said permanent magnet by the tension of the warp-threads, a source of electrical energy with which said permanent magnet andheddles are in circuit,-an electromagnet in cir cuit with said permanent magnet and beddles, and a shipper-lever controlled by said electromagnet so that when tension on any one of the series of heddles is relaxed so as to allow contact with said permanent magnet the circuit is completed and the loom stopped.

2. In an electric warp stop-motion forlooms, the combination with a heddle-frame, of a permanent magnet carried thereby, a series of heddles normally held out of contact with said permanent magnet by the tension of the warp-threads, a source of electrical energy with which said permanent magnet and heddles are in circuit, an electromagnet in circuit with said permanent magnet and heddles, a spring knockoff lever controlled by said electromagnet, a shipper-lever actuated by said knock-off lever, so that when tension'on any one of the series of heddles is relaxed so as to allow contact with said permanent magnet the circuit is completed and the loom stopped.

3. In an electric warp stop-motion for looms, the combination with a heddle-frame, of a permanent magnet carried thereby, a series of heddles normally held out of contact with said permanent magnet by the tension of the war -threads a source of electrical ener with which said permanent magnet and heddles are in circuit, an electromagnet' in circuit with said permanent magnet and heddles, a spring knock-cit lever controlled by said electromagnet, a shipper-lever actuated by said knock-off lever, connection between said knock-off lever and the lathe by means of which the said knock-off lever is moved at the forward movement of the lathe so as to throw the shipper-lever and stop the loom when tension on any one of the heddles is relaxed so as to allow contact with the permanent magnet and completion of the circuit.

4. In an electric warp stop-motion for looms, the combination with a heddle-frame, of a permanent magnet carried thereby, a series of heddles normally held out of contact with said permanent magnet by the tension of the warp-threads, a source of electrical energy with which said permanent magnet and heddles are in circuit,'a shipper-lever, a knockoff lever to actuate the shipper-lever mounted on the loom-frame so as to be normally out of the path of movement of the lathe, and an electromagnet in circuit with said permanent magnet and heddles to attract said knock-oft lever and throw it into the path of said lathe when the circuit is completed by the slackenin g of a warp-thread and the resultant movement of a heddle into contact with the permanent magnet. V

5. In an electric warp stop-motion for looms, the combination with a heddle-frame, of a permanent magnet carried thereby, a heddleshaft insulated on its bottom and two sides, a series of heddles normally held out of contact with said magnet by the tension of the warp-threads, a source of electrical energy with which said permanent magnet and heddles are in circuit, a conductor-plate on the loom-frame with which said heddle-frame contacts at each shed, a spring knock-off lever to actuate the shipper-lever mounted in a slide on the loom-frame normally out of the same and throw it into-the path of movement of the lathe when said electromagnet is energized by the completion of the circuit through V the slackening of the tension of any one of the warp-threads and the resultant movement of a heddle, and a projection on the lathe to engage said knock-01f lever and force it forward to actuate the shipper-lever and stop the loom.

6. In an electric warp stop-motion for looms, the combination with a heddle-frame, of one or more permanent magnets carried thereby, a series of heddles normally held out of contact with said permanent magnets by the tension of the warp-threads, a source of electrical energy with which said magnets and heddles are in circuit, an electromagnet in circuit with said heddles and said permanent magnets, a spring knock-off lever controlled by said electromagnet, a projection on the lathe which engages the said knock-01f lever when the latter is thrown into the path of movement of the lathe by the action of the electromagnet, a shipper-lever which is actuated by said knock-off lever to stop the loom, a condoctor-plate on the loom-frame, spring-arms on the heddle-frame which contact with said conductor-plate at the end of each shed and complete the circuit when any one of the heddles is thrown from its normal position by the slackening of the tension of a Warp-thread.

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

ALPHEUS C. SHUTTLEWOR TH.

Witnesses:

WM. 13. HILT,. LEWIS F. BROUT.

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