US1693498A - Stop motion for looms - Google Patents

Description

' NOV. 27, 1928. 159mm W. E. SMITH STOP MOTION FOR Looms Filed Nov. 2'7, 1926 4 SheetsSheet 1 Nov. 27, 1928. Y

W. E. SMITH STOP MOTION FOR LOOMS Filed Nov. 27, 1926 4 Sheets-Sheet 2 mm! M RI! Q E $11.1 l j w Q Q l lllll I:

Nov. 27, 1928. P 1,693,498

W. E. SMITH STOP'MOTION FOR LOOMS Filed 926 4 Sheets-Sheet 5 Nov. 27, 1928. HfiQEAQfi W. E. SMITH STOP MOTION FOR LOOMS Filed Nov. 27, 1926 '4 Sheets-Sheet 4 Patented Nov. 27, 1928.

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WILLIAM E SMITH, OF MILLTOVIN, NEW JERSEY, ASSIGITOR- TO GULBENKIAN' SEAT"- LF-SS RUG COMPANY, OF NEW BRUNSW'ICK, NETV JERSEY, A CORPORATION OF NEW JERSEY.

STOP MOTION FOR LOOIVES.

Application filed November 27, 1926. Serial No. 151,108.

My invention relates to stop motions for looms and consists of improvements thereto which will effect a quick actuation of the stop f motion and consequently a quick subsequent 15 stopping of the loom, when a shuttle fails to V travel the entire distance across the lay of i the loom or for some other reason doesnot enter one of the shuttle boxes prior to the beat up of the lay, thus preventing the otherwise inevitable smash so well known to weaversand manufacturers oftextile fabrics. The details of my invention will be fully disclosed hereinafter, reference being bad to the accompanying drawing, of which: 1 Fig. 1 is an end elevation of a loom suiticient to illustrate my invention as applied thereto; i

Fig. 2 is a front elevation; Fig. 3 is a plan viewyand Fig. 4 is a perspective view showing certain of the elements of my invention as being separated from their normal operating positions for the purpose of clarity.

In the drawings the frame of the loom is 25 shown at 1. the lay 2 being pivoted at 3, to the frame 1. The lay 2 is provided with a shuttle box 4 at each end thereof, which is adapted to receive the weft carrying shuttle. 5 when driven across the lay 2 by the usual picker arm 6 at the opposite side of the lay 2.

Power is supplied tothe loom by. suitable mechanism (not shown) which is under control of 'a rod 10, longitudinal movement of which in one direction effects the actuation of the loom and, when moved in the opposite direction, the stopping of the loom. The rod 1O is'connected at one endto the power controlling mechanism referred to and at its opposite end it is pivoted to a lever 11 secured to a shaft 12 vertically journalcd in the frame 1. At its upper end the shaft 12 is provided with a lever 13, pivotallyconnected at its outer end to one end of a hand rod 14, whose opposite end is pivotally connected to the free end of a lever 13*- pivotally mounted on the frame 1, in a manner to effect a longitudinal movement of the hand rod 14 when it is oper-' ated to actuate the power controlling mechanism of the loom, through the rod 10. The rod 14 is provided for manually controlling the power mechanism.

For automatically actuating the power mechanism, under the conditions above noted, each of the shuttle boxes 4 is provided with a shoe 15, which the shuttle 5 engages when it is in the respective shuttle box 4.. Each shoe 15 engages and operates a lever 16 which is secured to a trip shaft 17 ournaled in the lay 2. The trip shaft 17 extends entirely across the lay 2, and the shoe levers 16 are secured to the opposite ends of the shaft which is operable by either of the shoes 15. Secured to the shaft 17 adjacent each of the shoe levers 16 is a trip latch 18, the point 19 of which is adapted to engage a shoulder 20 on a trip arm 21 pivoted at 22 to the frame of the loom, if the shuttle 5 is not in either of the shuttle boxes 4 when the lay moves forward. If the shuttle is properly positioned in one of the shuttle boxes, the points'19 of the trip latches 17 ride over the shoulder 20 as shown in Fig. 1. The means for moving the lay 2 has not been shown as it forms no part of the present invention.

The arm 21 at the end of the loom on which the shaft 12 is mounted is connected by a link 25 to a trip lever 26 which has a hub loosely mounted on a control shaft 27 rotatably mounted on the end frame 1 of the loom in bearings 28 and 29. A spring arm 30 is secured to the shaft 27 and a spring 81 is stretched between the arm 80 and a fixed point on the loom frame 1. Rotation of the shaft 27 by the spring is restrained by a hold ing catch 32 which is pivoted to the bearing bracket 29 and has a detent engaging a tooth 34 on a collar 35 secured to the shaft 27. The holding catch 32 has a lateral e2:- tension 36 which overlies the trip arm 21.

The control shaft 27 has a knock off lever 37 secured to its end adjacent the setting shaft 12 which has a setting lever 38 secured thereto in a position to be engaged by the knock off lever 37.

The trip lever 26 has a laterally extending lug 39 thereon adapted to engage a lug 40 on a collar 41 which is secured to the shaft as shown in Fig. 1.

In operation, the setting or hand rod 14 is shifted to the position shown in Fig. 2, thereby turning the setting shaft 12 which pulls the shift rod 10 and thereby causes the loom to become active. Turning of the setting shaft 12 causes the setting lever 38 to engage theknock off lever 37 and thereby turn the control shaft 27 against the action of the spring 31, until the tooth 34 of the collar 35 is engaged by the holding catch 32,

see Fig. 4. If the shuttle 5 is not in the shuttle box 4 at either side of the lay 2 when the lay begins its forward or beat up movement, the trip latches 17- engage the shoulders 20 of the trip arms 21 turning them on.

their pivotsand thereby raising the holding catch 32 until its detent 33 disengages the tooth 34c of the collar 35 which is secured to the control shaft 27. Upon its release from the holding catch 32 the shaft 27 is rapidly turned by the spring 31 and the knock off. lever37 strikes thesetting lever 38 on the setting shaft 12, thereby pushing the shaft rod 10 in a direction to effect the stopping of the loom.

I-ffor any reason the spring 31 hasnot turned the shaft 27; continued forward movement of. the lay raisesthe trip arm 21 until the lug 39 on the-hub of the lever 26 engages the lug ll) on the safety collar 41 and thereby turns the shaft 27, by the power of. the loom, to stop theloomvasabove described.

I claim:

1. In a stop motion, for looms having a lay and apower control element for step ping and starting the loom; the combination of a control shaft associated with said power control element; active mechanism tending to turn said control shaft in one direction to efiect a stopping of the loom; restraining means for said control shaft; means operable by'said lay for releasing said control shaft from: said rest-raining means; and positive acting means for turning said control shaft in. said loom stopping direction, in event of said activemechanism be-- coming ineffective.

2.111 a stopmotion, for looms having a frame, a lay pivoted to the frame, a trip latch on the lay, a trip arm on the frame 00- operating with said lay trip latch to stop the loom, control shaft operated by said trip arm to effectthe stopping of the loom; and a manually operated element for restarting the loom; the combination of' ac tive mechanism adapted to turn the control shaft in the loom stopping direction;

restraining means for said control shaft;

means operable by said trip arm for releasing the control shaft from its rest aining means, and positive acting means operable by said trip arm for turning said control shaft in. the loom stopp ng direction in event of said; active mechanism becoming ineffective, said control shaft, its activemeclr anism; and its restraining means being adapted to be reset when said manually operated starting element is moved to restart the loom. i

3. In a stop motion, for looms having a frame, a lay pivoted; to the frame, a trip latch on the lay, a trip arm on the frame co-operating with said lay trip latch to stop the loom, a rotatable control shaft operated by said trip arm to effect the stopping of the loom, and a manually operated element for restarting the loonr; the combination of a spring arm on said control shaft; a spring connected to said spring arm and said loom frame; a collar secured-to said control shaft; a tooth on said collar; a holdingcatch-pivoted to said frame and engaging said trip arm; and a detent on said holding catch engaging said collar tooth.

l. In a stop motion, for looms having a frame, a lay pivoted tothe frame, a trip latch on the lay,.a trip arm on theframe cooperating with said lay trip latch to stop the loom, control shaft operated by! saidtrip arm to effect the stopping of the 100m, and a manually ope-rated element for restarting the loom; the combination of a spring arm on said control shaft; a spring con nected to said spring arm and: said loom frame; a collar secured to saidcontrol shaft; a toothon said collar; a holding catch pivoted to said frame and engaging said trip arm; a detent on said holding catch engagingsaid collar tooth; a lever pivoted on said control shaft; a link'connecting said lever with said, trip arm; a trip lug on said lever; a safety collar secured to said control shaft; and safety lug onsaid safety collaradapted to be engaged by said trip lu WILLIAM E. SMITH.

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