US794966A - Thin-place detector for looms. - Google Patents

Description

PATENTED JULY-18, 1905.

J. H. BAGWBLL. lTHIN PLAGE DETECTOR POR LOUMS.

APPLICATION FILED FBBfS. 1905.

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@Er @mme UNITED STATES Patented July 18, 1905.

PATENT OEEICE.

JUNIOUS H. BAGVVELL, OF. VEST DURHAM, NORTH CAROLINA, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

THIN-PLACE DETECTOR Fon Looms.

SPECIFICATION forming part of Letters Patent No. 794,966, datedN-Tuly 18, 1905.

Application filed February 3, 1905- 'Scrial No. 243.921-

To @ZZ whom, it may concern.-

Beit known that I, JUNIoUs H. BAGwELL, a citizen of the United States, and a resident of Vest Durham, county of Durham, State of North Carolina, have invented an Improvement in Thin-Place Detectors for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like figures on the drawings representing like parts.

This invention has for its object the production of simple, novel, and direct-acting means fordetecting the occurrence of a thin place or streak in the cloth being woven and to effect automatically and promptly the stoppage of the loom.

lf the take-up mechanism of a loom operates after failure of the filling, a thin or bare place, often called a streakj will be made in the cloth by the continued operation of the weaving instrumentality. By my present invention the occurrence of such a thin place or streak in the cloth causes the prompt stop-` page of the loom, so that there is but a very short distance for the weaver to turn back the cloth.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a top or plan view of a portion of a loom with one embodiment of my preseV ent invention applied thereto. Fig. 2 is a transverse sectional detail of the loom, taken on the line 2 2, Fig. 1, and looking toward the left; and Fig. 3 is a perspective view of the thin-place detector to more clearly show its general construction.

The breast-beam 1, lay 2, connected by usual lay-swords 3, Fig. 2, with the lay rockershaft 4, the temple 5, and its stand 6, fiXedly secured to the breast-beam, may be and are all of substantially wellknown construction and operate in usual manner.

The shipper 7, of usual construction, eX- tends at its lower end through a cam-slot in the head S of a knock-off arm 9, fast on a rock-shaft 10, Fig. 2, mounted on the lower part of the loom-frame and adapted to be operated by or through warp-breakage, su stantially as in United States Patent No. 673,825, dated May 7, 1901, the rocking of the shaft 10 being effected by or through the operation of the warp-stop-motion mechanism in well-known manner. Herein l have attached to the rock-shaft a second arm 11, on which is fulcrumed a dog 12, adapted at times to be engaged by a bunter 13, Fig. 2, movable with the lay, the bunter being shown as rigidly secured to the lay rocker-shaft 4 and having a notched portion 14 to receive the rearwardly-extended free end of the dog.

When the dog is moved into the path of the bunter, the shaft 10 is turned in the direction of arrow 15, Fig. 2, on the forward beat of the lay, and through the arm 9 the shipper is released from the usual liolding-notchin the plate 16.

In the present embodiment of my invention l have mounted the thin-place detector on one of the temple-stands, the stand being provided with depending ears 17, Fig. 2, to receive loosely a short transverse rock-shaft 18, to which are adj ustably secured the hubs of arms 19 and 20. (See Fig. 3.) A link 21 pivotally connects the rear end of arm 19 with the dog 12, as clearly shown in Fig. 2, and under normal conditions the dog is maintained in the inoperative position therein illustrated. The arm 20 is made longer and is inclined laterally toward the center of the loom, Fig.A 1, to clear the temple, and then 1t is bent rearward and downward at 22, terminating in a downturned thin-place detectingfoot 23 to rest upon the cloth adjacent the fell, the extremity of the foot being flattened, preferably, to form a thin blade 24, as best shown in Fig. 3, parallel to the warps and resting on the filling-threads at the fell.

While the filling sustains the detector or foot 23 the dog 12 will be held out of the path of the bunter 13, but when the filling fails and is not taken up the cloth will be drawn forward by the take-up mechanism, so that the thin-place detector will be no longer supported and its thin end 24 drops between the warp-threads. The arm 19 moves down simultaneously, and the dog is thereby moved into the bunter-path, and stoppage of the loom is effected.

By mounting the thin-place detector on the temple-stand it can be adjusted with the latter, while it is conveniently supported in operative position. The connection between the detector and dog is so flexible that lateral or fore-and-aft adjustment of the templestand may be made without trouble. Should the lateral adjustment be very extreme, the do(r 12 can be moved along the rock-shaft l0 and held in adjusted position by the setscrew 11X, the set-screw 13X, Fig. 2, providling for corresponding adjustment of the Fig. 1, as they would tend merely to confuse bunter 13.

The bunter and dog have been omitted in the same.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be modified or varied in different particulars by those skilled in the art Without departing from the spirit and scope of my invention.

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

l. In a loom, a temple, its stand, a thinplace detector mounted thereon, a shipper, and releasing means therefor controlled by said detector, to release the shipper upon the occurrence of a thin place in the cloth.

2. In a loom, a temple, its stand, a thinplace detector pivotally mounted thereon and normally held inoperative by the lling at the fell of the cloth, a shipper, and releasing means therefor including a dog maintained inoperative normally by the said detector, and a bunter to cooperate with the dog upon absence of the filling at the fell.

3. In a loom, in combination, a temple, its stand, a thinplace detector pivotally mounted on the stand and normally restin on the cloth at the fell, and means controlle and rendered operative by or through the detector and adapted to effect the actuation of a stopping instrumentality upon the occurrence of a thin place in the cloth.

4. In a loom, in combination, a thin-place detector normally held inoperative by the nllin at the fell of the cloth, a laterally-adjustable support on which the detector is mounted, a shipper, and means to release the same, controlled by the said detector, said means including a rocking bunter, and a normally inoperative dog flexibly connected with the detector.

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

JUNIOUS H. BAGWELL.

Witnesses J. F. PLEAsANTs, JNO. F. HARWARD.

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