US727728A

US727728A - Warp stop-motion.

Info

Publication number: US727728A
Application number: US9336902A
Authority: US
Inventors: Fred A Whitmore
Original assignee: DRAPER CO
Current assignee: DRAPER CO
Priority date: 1902-02-10
Filing date: 1902-02-10
Publication date: 1903-05-12
Anticipated expiration: 1920-05-12

Description

\ PATENTED MAY 12, 1903.

F. A. WHITMORE. WARP STOP MOTION. APPILIGATION FILED FBB.10.1902.

2 SHEETS-SHEET 1.

H0 MODEL.

jjflw Qfi No. 727,728. PATENTED MAY 12,1903.

1 P. -A. WHITMORE.

WARP STOP MOTION.

APPLIGATION FILED FEB. 10. 1902.

NO MODEL. I 2 SHEETS-SHEET 2.

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mus PEPERS co. ruo'rouwu, wASHINGTOmD, c.

' UNITED STATES Patented May 12,- 1903.

' PATENT OFFICEO FRED A. WVHITMORE, OF DOVER, NEW HAMPSHIRE, ASSIGNOR TO DRAPER COMPANY, OF PORTLAND, MAINE.

WARP STOP-MOTION.

SPECIFICATION forming part of Letters Patent No. 727,728, dated May 12, 1903.

Application filed February 10, 1902. Serial No. 93369. (No model.

To all whom it may concern.-

Be it known that I, FRED A. WHITMORE, of Dover, county of Strafford, and State of New Hampshire, have invented an Improvement in WVarp Stop-Motions, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The present invention relates to a warp stop-motion forlooms,andis mainly embodied in a novel construction and arrangement of the knock-off device for the shipper and its connection with the feeler, the invention being applicable to a construction in which the drop-wires are utilized as heddles or in which drop-wires are introduced behind the harnessframes. In connection with the former construction in which the drop-Wires are used as heddles the construction embodying the invention is such as to afford effectual means for providing a loom having a multiple harness with a warp stop-motion, it being practicable, moreover, to disconnect the feeler belonging to any set of heddles or to add a feeler or feelers, if harnesses are added to a 100m.

In the construction embodying the invention the feeler and knock-01f mechanism re ceive their movement from the lay rock-shaft, which renders it practicable to connect the knock-off mechanism with the front part of the loom-frame, so as to render the said knock-off mechanism readily accessible for purposes of adjustment.

In the construction in which the drop-wires are supported at the rear of the harness the said drop-wires are arranged to be supported between the lease-rods or their equivalent, the said lease-rods thus not only serving to divide or separate the warp-'thread'awhich is their usual function, but also serving to steady the drop-wires, which are only subjectedto the play of the threadsbetween the lease-rods instead of being chopped up and down each time theshed is opened.

Figure 1 is a cross-section, partlyin elevation, of a portion of a loom having the stop motion embodying the invention applied thereto. Fig. 2 is a similar view showing a modification; and Fig. 3 is a horizontal sectional detail, the plane of which is approximately indicated 'by line 50 on Fig. 1.

In the construction shown in Fig. 1. the

.drop-Wires a are connected by a lost-motion which are connected together by ribs e and the said channels are so situated that a dropwire when unsupported by the thread will lie across the channel and be supported at 0pposite sides by the members 6 and a so as to arrest the feeler d'. The drop-wire, therefore, when in a position to arrest the feeler is supported at both sides of the channel 6, the said channel, however, being mainly open at the back, so that lint will not collect therein. The levers to which the feelers d are connected are operated from the lay rock- 'shaft E, the connection being made, through a link 01 an intermediate leverd, pivoted at 01 and a link (1 with an elbow-lever (:1 which in turn is connected, by means of a link (Z with an arm d, which is operated directly from the rock-shaft E.

In the construction shown in Fig. 1 the arm d" is provided with a projection (1 which enters a cam-groove d in a cam member (1 l d, which is interposedbetween the lever d and the adjustable collar (Z on the rod d the said spring being adapted to yield if the feeler is arrested and permit the lever d to move with relation to the rod 01 instead of transmitting its movementto said rod. The

knock 0% device or tripping member al which cooperates with the shipper-leverf, is carried by thelever 61 but normally held out of the path of the shipper-leverfby a support d, mounted on the rod 61. The tripping member oi is shown as pivotally connected with the lever (Z and weighted so as to change its position when unsupported by the support d", as is the case when the movement of the rod d is arrested, as shown in Fig. 2. This normally prevents the member (1 from coming into the path of the shipperleverf, so as to move the same and stop the loom.

As shown in Fig. 1, the construction above described is readily applicable for use with a multiple-harness loom, it being necessary only to duplicate the feeler-levers, there being one feeler for each two sets of heddles, the feelers, as shown, having sufficient movement to cooperate with a drop-wire of either set. This is illustrated in Fig. l,'the dotted lines showing the feelers in their rearward position,where they stand beyond the forward heddles, which are thus free to drop between the feelers and the members 6 if a thread breaks, so as to arrest the feelers. The feelerlevers thus duplicated are shown as connected together by links 61 and if it is desired to use the loom without using all of the sets of heddles it is only necessary to disconnect the feelers which are not in use by disconnecting the links (1 which, as shown in Fig. 3, are held in place by removable pins. Furthermore, a loom originally designed for only two harness frames may have additional frames added without modifying or redesigning the stop-motion. As indicated, the knockofi device in accordance with this construction is mainly supported between the front members of the frame, where it is easily accessible for adjustment, &c., the necessary adjustment for varying the relation between the feeler and the knock-ofi member being afiorded by the adj usting-collar c1 and the supporting-rod d", which is also longitudinally adjustable with relation to the rod 61 and arranged to be locked in any desired position by means of a nut d.

In the construction shown in Fig. 2 the dropwires a are supported in aframeA behind the harness, the said frame also being arranged to support the lease-rods g or the equivalent therefor,the drop-wires being located between the said lease-rods, as shown. As indicated in Fig. 2, moreover, the lever d is directly connected, by means of a link 61 with an arm d, projecting from the lay rock-shaft E, since there is no necessity for any special timing of the movement of the feeler.

The play of the lease-rods is permitted by mounting said rods in channels in the frame, and while the drop-wires are free to move with the threads they are not chopped up and down each time the shed is opened, and consequently do not chafe and wear the thread.

The operation of the device embodying the invention is as follows: The drop-wires are supported out of the path of the feeler d, so that the said feeler is free to move its full distance in response to the action of the operating device 01 and the said operating device and the support (Z therefore normally travel together, keeping the knock-off device in the position shown in Fig. 1, where it will clear the shipperf. If, however, a thread breaks, the drop-wire belonging to said thread will drop, as shown in Fig. 2, so as to arrest the feeler d, the operating device, however, continuing its movement, as permitted by the yielding connection al and carrying the knock-off device al away from its support (1", so that the said knock-oif device moves into a position to engage the shipper f, as shown in Fig. 2.

I claim- 1. In a warp stop-motion, the combination with the drop-wires; of a feeler; an operating device for the feeler supported in the front portion of the frame of the loom; a knock-off device connected with said operating device; a support connected with the feeler for normally supporting said knock-off device in its inoperative position; and a yielding connection between the said operating device and the said feeler to yield when the said feeler is arrested and to thereby permit the knock-off device to leave its support.

2. In a warp stop-motion, the combination with a multiple harness-frame; of drop-wire heddles connected therewith; a member to cooperate with the heddles of each pair of harness-frames; a feeler for each member normally movable past said member but adapted to be arrested when a drop-wire stands in front of said member; a separate support for each feeler; means for connecting together or disconnecting said feelers; a common operating device for moving said feelers in the same direction; and means for causing said operating device to operate the shipper when one of said feelers is arrested, as set forth.

3. The combination with the drop-wire heddles; of a feeler; a member provided with a channel for the feeler in the path of the dropwires when said drop-wires are unsupported by the threads; an operating device for the feeler; a yielding connection between the operating device and the feeler; aknock-off device pivotally connected with said operating device; a support for said knock-01f device connected with the feeler; and means con nected with the lay rock-shaft for producing a movement of said operating device during the dwell of the harness-frame, as set forth.

4. The combination with the feeler; of an operating device having a spring connection with said feeler, said operating device being supported on the loom-frame near the front thereof; a knock-off device connected with said operating device; a support for said knock-off device connected with said feeler;

and means for adjusting the point of connection between the operating device and the feeler, as set forth.

5. The combination with a plurality of feelers movablein the same direction and having separate supports; of an operating device; a spring connecting said operating device with said feelers; a knock-oft device controlled by said operating device and said feelers; and means for adjusting the point of connection between the operating device and.

normally out of the path of said shipping-le.

ver; and means operated by the stoppage of said rod and consequent relative motion of said rod and lover to put said knock-off device into the path of the shipping-lever.

7. In a warp stop-motion, the combination with a shipping-lever; of a feeler; a longitudinally-movable rod connected with and operating said feeler; a contin uously-oscillated lever loosely supporting said rod; a resilient connection between said rod and lever; a knock-off'device pivotally carried by said lever and having a projection constructed to come into the path of said shipping-lever in response toa pivotal movement of said device; and a finger rigid withsaid rod-and normally supporting said device except when the relative motion of said rod and lever permitted by said resilient connection takes place.

8. In a warp stop-motion, the combination with the heddles and drop-Wires located in the same planes; of a plurality of feelers; a plurality of parallel levers carrying said feelers and pivoted at points below the latter; 0scillatingmeans for one lever; and a detachable link joining each lever to the one next thereto.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRED A. -WHITMORE.

Witnesses:

WM. LEROY QUIMBY,- A. G. WHITTEMORE.