US459841A

US459841A - Weft stop-motion for looms

Info

Publication number: US459841A
Authority: US
Publication date: 1891-09-22
Anticipated expiration: 1908-09-22

Description

(No Model.) 2 Sheets-Sheet 1.

P. LAOBY.

WEPT STOP MOTION FOR LOOMS.

Patented Sept. 22, 1891.

//V V /V TOR 22 4 7 WITNESSES 1* Nouns warns cim, PHWO-LITmL, wAsmMaTan, n. c.

2 MW 8 h S q t e 8 h S 2 Y E O A L F (No Model.)

WEFT STOP MOTION F03 LOOMS.

Patented Sept. 22, 1891.

IN VE N TOR.

WITNESSES;

UNITED STATES PATENT OFFICE.

FRED IAGEY, OF ADAMS, MASSACHUSETTS.

WEFT STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 459,841, dated September 22, 1891. Application filed Novemher t 1890- Serial No, 370.465. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRED LACEY, of Adams, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in lVeft Stop-Motions for Looms; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention consists of improvements in that division of loom mechanism classed as weft stop-motions, comprising devices for automatically stopping a loom when the filling-thread breaks or runs out. It is fully illustrated in the accompanying drawings.

Figure 1 represents a top view of a part of a lathe and breast-beam of a loom with the stop-motion devices attached thereto. Fig. 2 shows a front elevation of the portion of the lathe and devices on it seen in Fig. 1. Figs. 3, 4t, and 5 are separate views of some of the parts of the mechanism shown in Figs. 1 and 2, which will be distinguished by the letters marked on them. Fig. 6 shows a section of a lathe with its Weft-motion devices, taken on line :0 ac, Fig. 1. Fig. 7 shows the weft-feeler block and feeler in different positions. Fig. 8 shows how the improvement is applied to another form of shipper-cast-ofi mechanism using a rocking rod. Fig. 9 is a front elevation of the breast-beam and partsseen in Fig. 8. Fig. 10 represents the improvement adapted to operate a shipper cast-off having a horizonal lever. Fig. 11 is a front elevation of the parts shown in Fig. 10. Fig. 12 shows a modification of the weft-stop mechanism to operate a shipper-cast-off mechanism already using a shuttle-binder stop-motion. Fig. 13 is a vertical section of the breastbeam and parts, taken on line 2 2, Fig. 12. Fig. 14 shows an elevation of part of the lathe, with said modification of the casting-off device. Fig. 15 is a cross-section of the lathe, showing said modification with the horizontal stud on the front, which operates the cast-0E.

In Fig. I of the drawings the breast-beam A is drawn in dotted lines in top views, that the relative position of the mechanism on its under side, which is shown in full lines, may

be easily understood.

B is a part of the lathe, to the front side of which the other parts of the stop mechanism are attached, which consist of a plate a, made fast on the front of the lathe and having a plate e, secured to its front by means of screws passing through slots-in the plate and leaving the plate e with freedom to slide endwise on the face of the plate a. The plate e has a recess e made in its upper side, one side of the recess being cut in square to the upper side of the plate and the other side inclined, so as to rise gradually up out of the recess to the outer edge of the plate. The plate a, has two ears projecting on its upper side to furnish bearings for the pivot of the weft-feeler block cl to vibrate in. This block 01 extends down far enough to pass into the recess 6' in the plate 6 when the feelers c are clear downthat is, the forward part of it marked d. The plate 6 has a stud a attached to its lower edge and another adjustable horizontal stud b projecting out from its face toward the breast-beam. A bar f is cast or otherwise made fast to the plate a, and extends down and across just back of the stud a, up to the other end of the plate, for the stud a to rest against to prevent the plate e from being cramped and hindered in sliding by the pressure of the arm h on the stud a in sliding the plate. The parts of the stop-motion attached to the breast-beam A are: the plate h, Fig. 5, which is secured with bolts to the under side and has astud Z extending down from its under side, and the plate j, with a semicircular slot and projection w. on one side, and the slotted arm h. The last two have holes in them through which the stud Z passes, and a pin through the lower end of the stud secures them. A small bolt g, that passes through the slot in the plate j and a hole in the arm h, holds the two together, the slot permitting the plate j to be set around on the arm, so that the projection 01 can be put on any side of the arm that may be required. The arm h is placed on the beam A, so as to stand at a slight angle to a line square to the side of the beam, with the stud o. in its slot, and a small close spiral spring '0 has one end secured to the beam and the other to the arm to hold it in position with suflicient force to make the stud in its back and forward movement, in consequence of the lathe-motion, follow the slot and move the plate c back and forward endwise, so long as that plate is free so to move; but when the plate e is prevented from sliding by the feeler-block d entering into the recess 6, as described, the spring 1 will yield and allow the arm to be moved by the stud and the projection n to strike against the shipper-oast-oif rod orlever, which in Fig. 1 consists of a rod 22-, held in hearings on the under side of the breast-beam A, and has on one end a notched plate j, which lies under the shipper-plate Z, also attached to under side of the beam. The shipper-plate Z is of the usual form, having a long slot for the shipper to slide in and a notch near the end of the beam to catch and hold the shipper if when the loom is started. The rod n has a small dog y, fastened on it in position to be struck by the projection n on the plate j when the arm h is pushed back and pushes the rod n and its notched plate j so that the incline of the notch in the plate will push the shipper t out of the notch that holds it and throw 0% the driving-belt.

In Fig. 6 will be seen the positions of the weft-feelers c. The incline on one side of the recess e on the plate e, before mentioned, in the sliding back of that plate as the lathe moves out, passing under the lower portion of the block d forward of its pivot, causes it to rise with the feelers to allow the shuttle to pass. As the lathe moves in and the plate 6 slides back the block and feelers drop, assisted by an outward swell on the plate 0, pressing against the tail of the feeler-block at d, and if the weft-thread is intact the feelers will rest on it in the position shown by 0 but if the weft-thread is missing the feelers will continue to fall to the posit-ion of c, Fig. 7, and the front lower point of the block (1 will enter the recess in the sliding plate 6 and stop it, causing the inward motion of the lathe to push back the slotted arm h by the stud a, which will, by means of the projection n on the plate j and the dog y, throw the rod 72. endwise and cast the shipper out of the notch in the plate Z and stop the loom; but when the weft-thread is in place it will hold the feelers 0 up, so that the point of the block d will be out of the notch in plate e and that plate will be free to slide. In fast-running looms the plate 6 is liable to be thrown past the weft-block so quickly that the weft-feeler will not have time to drop into the recess 6 (when the weft is missing) before the square side of the recess will have passed by and thus fail to stop the plate. To obviate this difliculty I curve the free end of the arm it, so as to bring its slot in the part toward its free end less square to the face of the breastbeam, that it may move the stud ct quickly in the last part of the lathe-motion in and raise the weft-feelers quickly out of the way of the shuttle, and 'as the lathe moves out drop them quickly at first but more slowly as the stud approaches the straighter part of the slot, which is made nearly square to the breast-beam, letting the feelers down easily on the filling-thread to prevent kinking or pressing it down between the warp-thread and causing the stud to move slower and stronger in casting off the shipper if the plate is stopped by the block for lack of filling.

The object in arranging and showing the following modes of applying the improvement to other kinds of shipper-cast-ofl: mechanisms is because a good weft stop-motion is perhaps as much in demand to take the place of poor ones in use on looms now in operation as to apply to new looms, and the more easily it can be made to operate any form of a shipper-motion that may be already on the loom the less alteration will be necessary and the chances of its being adopted will be much greater. In Figs. 8 and 9 it is shown combined with a rocking rod cast-oil, in which the projection n on the platej' strikes a dog 7' on the rod and turns it so that a dog 0' in reverse position on the rod at its end will push the shipper-lever out of its notch. In Figs. 10 and 11 it is shown combined with a lever cast-01f, in which the projection 02 on the plate j strikes one end of a horizontal lever m, pivoted to the under side of the breast-beam, the outer end of the lever pushing the shipper-lever out of its notch. In Figs. 12 and 13 it is shown in combination with a shuttle stop-motion or with those parts of such a motion as are usually attached to the breast-beam (the other parts of the motion being omitted in the drawings for sake of clearness) in casting off the shipper when the shuttle fails to enter its box. In this case the shuttle-arm h is used to move the sliding plate 6, as before described; but a horizontal stud b, adjustable as to length, (see Fig. 15,) is made fast on the face of the plate 6 in position to strike against the trip-lever 7a, (which is the same lever that the dagger of a shuttle cast-off would strike in stopping the loom,) when the plate e is stopped by the block cl, and pushes back the inner end of the lever m, causing the outer end of that lever to push the shipper out of its notch and stop the loom. The stud b is made adjustable by fitting it into the hub on the plate with a screw-thread, (see Fig. 15,) and a check-nut s is placed on it to hold at any place it may be set.

Having thus described my improvement, I claim as my invention 1. In a weft stop-motion, the breast-beam A, slotted arm h, pivoted thereto, and springv between the arm h and beam A, in combination with the lathe B, sliding plate 6, attached thereto and having notch e and stud a eugaging the slot in arm h, the block d, carrying feelers and pivoted to said lathe, the shipper and a rod or arm engaging therewith and provided with a projection, and means for engaging said projection and moving the rod or arm when the block 01 falls into recess 6, substantially as described.

2. In a weft stop-motion, the breast-beam A, slotted plate j, secured thereto and having projection a, slotted arm h, pivoted to said plate, in combination with the lathe B, sliding plate 6, attached thereto and having stud a engaging the slot in arm h, the block d, car rying feelers c and pivoted to said lathe and the shipper, and means between the shipper and plate j for moving the same, substantially as described.

3. In a weft stop-motion, the breast-beam A, the slotted arm h, pivoted thereto and having its outer or free end curved and the spring 1), between the beam and arm h, in combination'with the lathe B, the sliding plate 6, attached thereto and having recess 6' and stud a, engaging the slot in arm h, the block d, pivoted to said lathe and provided with feelers, the shipper and rod or arm engaging therewith and provided with a projection, and means for engaging said projection and moving the rod or arm when block d falls into recess e, substantially as described.

FRED LAOEY.

Witnesses: v

E. VAN VOLKENBURGH, J12, WILLIAM FERGUSON.