US1363492A - Stop mechanism for looms - Google Patents

Description

E. F. BUSINGER. STOP MECHANISM FOR LOOMS.

APPLICATION FILED MAY 3. I920.

' Patented Dec. 28, 1920.

L36SAQ,

3 SHEETS-SHEET 1.

a e a u a n E. F..BUS|NGER.

STOP MECHANISM FOR LOOMS.

APPLICATION FILED MAY 8. 1920.

Patented Dec. 28, 1920.

3 SHEETSSHEET 2.

E F. BUSINGER.

STOP MECHANISM FOR LOOMS.

APPL'ICATIONFILED MAY 8, 1920.

1 63,492, Patented Dec 28,, 192%,

3 SHEETS-SHEET 3.

EMIL F. BUSINGER, OF NEW YORK, N. Y.

S1 0? MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented Dec, 28, 192&

Application filed May 8, 1920. Serial No. 379,710.

To all 1071077107; may concern:

Be it known that I, EMIL F. BUsINonn, a citizen of the United States, residing at the borough of the Bronx, city of New York, county of Bronx, and State of New York, have invented a new and useful Improve ment in Stop Mechanism for Looms, of which the following is a specification.

This invention relates to stop mechanisms for looms, particularly looms using dropbox or shuttle-lifting mechanism for weaving in colors, and which employ a jacquard mechanism, dobby heads or cams to con trol the pattern.

It is well known that severe damage and loss of time and material are apt to result from continued running of the loom when its mechanism fails to function properly, and this is particularly the case with respect to Jacquard looms which employ drop-box or shuttle-lifting mechanism for weaving varicolored patterns. Continued running of these looms when the pattern controlling mechanism fails to synchronize with the drop-box or shuttle-raising mechanism is apt to result in breaking the shuttles, smashing out the threads, tangling the threads in the machinery, breaking the shuttle rack and pinions or cause the wrong color weft to be woven.

Likewise the above mentioned harm is likely to follow in consequence of the break ing of the shuttle-lii cing chains, or, when, for any reason, the shuttles stay improperly in raised position, or when the regulator needle of the jacquard fails to enter the hole in the jacquard card provided therefor.

To avoid the above damage when the parts of the loom fail to function properly, it is necessary to stop the loom without delay, and for this purpose an operator is usually relied upon to watch the loom carefully and stop the loom manually whenever anything goes wrong.

()ne of the objects of this invention is to provide a stop mechanism for looms, whereby the loom will be automatically and promptly stopped whenever the patterncontrolling mechanism fails to synchronize with the drop-box or shuttle-lifting mechanism.

Another object of this invention is to provide means adapted to automatically and promptly stop the loom whenever the shuttle-beam lifting chains break, or whenever the shuttle-beam stays improperly in raised position, or whenever the regulator needle of the jacquard fails to enter its hole in the jacquard card.

A further object is to provide simple and efliclent means for automatically stopping a loom whenever the ground weft or proper "color weft is not woven at the proper time.

A further object of the invention is to provide simple, inexpensive and efiicient automatic stop mechanism for looms, and one which may be readily mounted on a loom without interfering with or requiring severe structural alterations of the loom parts, and one which is sure and positive in operation, and at the same time does not interfere with the usual manually actuated means for starting and stopping the loom.

Other objects will he in part obvious and in part pointed out hereinafter.

While the invention may be applied to looms employed for weaving either wide or narrow fabrics and in which the pattern is controlled by cam levers, dobby heads or jacquards, the present embodiment has been illustrated in connection with a typical narrow-ware loom such as that shown in the patent to O. W. Schaum, No. 7 86,237 of March 28, 1905, to which reference may be had. for a more complete showing of certain well known elements of the loom mechanism which form no part of this inven tion.

In the accompanying drawings,

Figure 1 is a side view of a loom with the stop mechanism mounted thereon and showing above in diagrammatic perspective the method of connecting the stop mechanism with a jacquard mechanism forming part of the loom;

Fig. 2 is a front view of a portion of the loom;

Fig. 3 is a section of part of the stop mechanism on the line 3-3 of Fig. 1;

Fig. a is a sectional view on the line H of Fig. 1;

Fig. 5 is a perspective view of one possible method of connecting the stop mechanism with a beltshifting arm of the loom; and

Fig. 6 is a sectional view of Fig. a on the line 66.

Similar reference characters refer to similar parts throughout the several views of the drawings, in which-- 1 represents a narrow-ware Jacquard loom of usual construction adapted to weave varicolored figured cloth by the insertion in predetermined sequence of wefts of different colors, and comprises the usual frame 2, fixed driving pulley 3, loose pulley i and belt-shifting arm 5 adapted to be moved and thereby shift driving belt 6 from one pulley to the other to effect the starting or stepping of the loom. Rock arms 7 carry the usuallay beam 32, which as usual is rocked in responseto the rotation of the shaft, gear wheel 10 and the consequent to-and-fro movement of the link 11 connected thereto. Two. transverse shuttle-beams 3 re spaced apart, as by vertical bars 36, and carry the usual shuttle blocks and shuttles of which two banks are shown. The beams S are movably secured to rigid upward extensions 33 onthe lay. beam so as to rock to-and-fro therewith butto be capable of vertical movement relative to the latter sufficient to bring one or other of the several banks of shuttles into the plane of the sheds formed as usual in the weft threads between the shuttle-carrying blocks. Any suitable means, such as bell crank levers 35 (of which one is shown) are provided for moving the shuttle-beams andshuttles into predetermined positions in response to movement of the usual color regulating needles of a jacquard mechanism to .causethe ground weft or the proper color weft to be woven in predetermined sequence.

The drawings show a jacquard mechanism which may beof usual type and is adapted to govern a two shuttle weft, having a regulator needle 9 adapted to enter regulator hole 10 whenever it appears in a card of the jacquard-card train. As usual, this needle is adapted to cooperate with a jacquard hook 11 adapted to be raised by a knife 12 whenever the needle 9. enters a regulator hole, and governs the pick mechanism to cause a pick to be taken whenever the needle 9 fails to enter a hole-1O in card and not otherwise. This hole 10 appears only in the figure or color cards, as is usual.

The stop mechanism comprises a member or bar 13 pivotally connected at one end, as at 14:, to one arm 15 of a bell crank lever pivotally mounted on;the loom frame 2, as at 16, the other arm 17 of said lever engaging beltshifter. 5 through a pivotally connected member 18., so that horizontal movement ofmember 13 toward the left (Fig. 1) will cause the belt 6 to be shifted onto the loose. pulley 4 and effect the stopping of the loom. Member 13 is supported near i s outer enchasat 19, by an attached cord or wire 20 leading over a pulley 21 mounted on a bracket 34 carried by lay 32, the wire 20 being fastened to beam 8, as at 22, so that whenever thebeam is raised, member 13 will.

fall, and, whenever, the beam is lowered,

member 13 will rise. A pusher member or bar;23.1s;p1v0tally,mounted near one end on irocliiarmz7, as M23, and issupported at its other end by a second cord or wire 25 attached to jacquard book 11, so that member 23 will be raised'whenever regulator needle 9 enters a hole in the jacquard card, and will be lowered from that position when needle 9 does not enter a hole in the card.

From the above it is evident that, wnenever regulator needle 9 enters a hole in the jacquard card, shuttle-beam 8 lowers, there by raising member 13, and simultaneously member will also, be raised by means of wire 25. Also, member 23 will partake of oscillating movement with rock arms 7, while member 13 will normally remain-horizontally stationary. The stop mechanism is so arranged that whenever the above described simultaneous vertical movement of members 13 and 23 fails, the movement of bar 23 toward the'left in Fig. 1 will cause member 13 to be moved to the left, and thus automatically effect a stopping of the loom.

Means for accomplishing this result comprise a depending lug 26 fastened to member 13, as at 27, and a lug or projection 28, formed oi"mounted on member 23, adapted to move in and out of a recess '29 formed in member 26, when the loom is running in normal condition and so long as members 13 and 23 move vertically in synchronism. The outer-end of bar 13 rides between the two vertical prongs of a guide fork 37 mounted on bar 23, which fork maintains the proper lateral relationship between bars 13 and 23 during their travel. When members 13 and 23 do not move vertically in synchronism, lug 28 is adapted to engage a surface 30 or a surface 31 formed on lug 26, in which event movement of bar 23 to the left will effect the stopping of the loom as above described. lVhen the jacquard mech anism does not synchronize with the shuttle lifting and lowering mechanism, projection 28 is adapted to strike one of these surfaces or 31 and effect the stopping of the loom. lVhenever the jacquard needle 9 fails to enter a hole at the proper time but the beam 8 lowers, projection28 will engage surface 31 and causethe loom to stop; and, again, whenever the regulator needle 9 enters a hole in a card but for any reason beam 3 does not lower, projection 28 will. engage surface 30 of. lug 26 and cause the loom to stop. Also, when the shuttle-lifting chains break and the shuttle-beam stays lowered, while the jacquard mechanism operates for raised shuttles, projection 28 will engage surface 31 of lug 26 to stop the loom.

It isapparent from the above that this device may be installed upon any one of a number of varieties of looms and irrespective of the number of colors or shuttles with which the loom is designed to operate. When more than two banks of shuttlesare used, the recess29 in lug 26 should be made sufficiently wide to allow-for the-proper positioning of the shuttles without actuating the stop mechanism. It is understood that the parts should be adjusted according to the particular extent of drop of the shuttlebeam, the rise of the jacquard hook being practically the same in all looms.

It is understood that many changes and embodiments of this invention may be made without departing from the spirit and scope thereof.

I claim:

1. In a loom, the combination with means for starting and stopping the operation thereof, a pattern controlling mechanism, a plurality of shuttles, a mechanism for raising and lowering said shuttles, said mechanisms cooperating to produce a given design, a lay, and means for rocking said lay; of two movable members, means for moving one of said members in one direction in response to the operation of said pattern controlling mechanism, means for moving the other of said members in one direction in response to the raising and lowering of said shuttles, and means responsive to the rocking of said lay for moving one of said members in a different direction into engagement with the other of said members to move said last mentioned member in a different direction to operate said loom stopping means whenever the cooperative relationship between said mechanisms is destroyed.

2. In a loom, in combination, shuttle carrying means, means to rock said shuttle carrying means, means to raise and lower said shuttle carrying means, a acquard mechanism adapted to synchronize with said second mentioned means, a movable member, means adapted to impart predetermined movement to said member in response to rocking movement of said shuttle carrying means, means to impart a diiferent predetermined movement to said member in response to movement of said jacquard mechanism, a second movable member, means to impart predetermined movement to said second member in response to the raising and lowering of said shuttle carrying means, and means adapted upon predeterminedrelative movement of said movable members to stop the loom.

3. In a loom, in combination, a shuttlebeam, means adapted to raise and lower said shuttle-beam, a aequard mechanism adapted to operate in synchronism with said shuttle-beam operating means, means for stopping the loom upon failure of said means to synchronize with said mechanism, comprising a pair of independently movable members adapted to move in synchronism while said means and mechanism operate in synchronism, said synchronism being adapted to be destroyed upon failure of synchronism of said means and mechanism, where by relative movement of said members eifects the stopping of said loom.

4c. In a loom, in combination, a shuttle beam, means adapted to raise and lower said shuttle-beam at predetermined times, a jacquard mechanism adapted to govern the raising and lowering of said shuttle-beam, a stop mechanism comprising a member movable in a predetermined manner in response to said jacquard mechanism and movable in another predetermined manner in response to rocking movement of said shuttle-beam, and a second member movable in a predeter mined manner in response to the raising and lowering of said shuttle-beam and adapted to be engaged and moved by said first movable member upon the failure of said jacquard mechanism to properly govern the means for raising and lowering the shuttle-beam, and means whereby the last mentioned movement-of said second member effects the stopping of said loom.

A stop mechanism for looms, comprising, in combination, a movable member adapted to be mounted on and be movable with the rock arm of a loom and adapted to be connected with a jacquard mechanism to partake of predetermined movement with the movement of a acquard hook, a second movable member adapted to be mounted on said loom and to be movable in a predetermined manner in response to the raising and lowering of the shuttle-beam and to be connected with the belt shifting arm of said loom whereby its movement in a predetermined direction effects the stopping of said loom, said two movable members being adapted to cooperate to permit the continued running of the loom when the acquard mechanism properly synchronizes with the shuttle raising mechanism, but to efl'ect a stopping of the loom whenever said jacquard mechanism fails to synchronize with the raising and lowering of the shuttles.

Signed at New York city, N. Y., this 7th day of May, 1920.

EMIL F. BUSINGER.

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