US463372A

US463372A - Weft stop-motion for looms

Info

Publication number: US463372A
Authority: US
Publication date: 1891-11-17
Anticipated expiration: 1908-11-17

Description

(No Model.) 2 SheetsSheet l,

G. PARK & J. E. GODDARD. WEFT STOP MOTION FOR LOOMS.

No. 463,872. Patented Nov. 17,1891.

6 Fig]. i 1 I j I t (No Model.) 2 She'ets-Sheet. 2.

GfPARK & J. E. GODDARD. WEFT STOP MOTION FOR LOOMS.

No. 463,372. Patented Nov. 17,1891.

UNITED STATES PATENT OFFICE.

GILBERT PARK, OF ALES, AND JOHN E. GODDARD, OF SPENCER, ASSIGNORS OF ONE-HALF TO JOHN G. AVERY, OF SPENCER, MASSACHUSETTS.

WYEFT STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 463,372,dated November 17, 1891.

Application filed January 12, 1891. Serial No- 3'7'7,516. (No model.) 7

To all whomit may concern.-

Be it known that we, GILBERT PARK and JOHN E. GODDARD, citizens of the United States, and residents, respectively, of Wales 5 and of Spence'nin the State of Massachusetts,

have jointly invented a new and useful Improvement in Weft Stop-Motions for Looms, of which the following is a specification.

This invention relates to mechanical devices for automatically stopping the loom when the thread of the weft or filling breaks or a bobbin becomes exhausted or fails for any reason to pass through the shed of the warp when the loom is running; and the in- I vention consists in certain novel combinations of parts hereinafter set forth and claimed.

The distinctive objects of the present invention are, first, to lift and lower the feelers by a peculiarly simple and novel device; secondly, to actuate the lifter by a self-adjustingone-part spring-finger; thirdly, to provide for automatically and immediately readjusting the feeler-lifter in case the weaver 2 5 in moving the lay by hand should fail to readjust it before starting the loom; fourthly, to provide strong and simple mechanical transmitting devices for actuating the beltshipper or its equivalent'when the filling is absent, so that the loom shall stop before the reed strikes the fell of-the cloth, whereby we avoid turning the loom back by hand before starting up. \Vith our device it is only necessary to push the lay back, when it is ready 3 5 for the shuttle without the loss of a pick.

Two sheets of drawings accompany this specification as part thereof.

Figure 1 of the drawings represents a top view of central fragments of the breast-beam and the retracted lay of aloom provided with our stop-motion. Fig. 2 represents asectional elevation of the parts shown in Fig. 1, illustratin g the advance of the lay, with the filling absent, by dotted outlines of some of the parts in a second position of thelay. Fig. 3 represents a sectional elevation with the plane of section ato 3, Fig. 1, and with the lay in its most advanced position, illustrating also in dotted lines the automatic readjustment of the feeler-lifter. Fig. 4 represents afragmentary reverse View of the attachments to the lay, showing their other side as compared with Fig. 3. Fig. 5 is a fragmentary viewlooking forward from the lay, showing the attachments to the breast-beam. Fig. 6 is atfront view of the attachments to the lay, andFig. 7 is a perspectiveview of the feeler-lifterdetached.

Like letters of reference indicate corresponding parts in the several figures.

Ve have shown and will describe our stopmotion as applied to a loom having a Knowles belt-shipper, as set forth in Patent No. 19mm, dated November 27,1877; but we do not confine ourselves to this application of our novel combinations of parts, as hereinafter claimed.

Referring to the drawings, A represents the lay-race, and B the breast-beam of the loom.

C represents the shipper-rod, mounted in pivotal bearings immediately below the breast-beam, which carries at one end the shipper-handle of said Knowles belt-shipper, said rod for the purpose of thefpresent invention being provided with a short crank-arm c, 7 5 adjustable angularly upon the rod and fastened by a screw 0 D represents a trip-lever turning on a horizontal pivot-bolt d and having an upwardlyprojecting effective end, which projects adjacent to the lay in the retracted position of the latter.

E represents a bracket rigidly attached to the back of the breast-beam by boltse, and provided atsaid bolts with vertical slots 6 for example, whereby it is rendered vertically adjustable for so adjusting said lever D, and at said pivot-bolt d with a horizontal slot 6, for example, as means for adjusting said lever D as to its distance behind the cloth-beam, 0 and F represents a connecting-rod coupled by pivot-bolts ff to said crank-arm o of the rod C and to the lower end of said lever D, respectively, and adjustable by a series of holes (Pin the lever D, for example, to reduce or in- 5 crease the extent of the transmitted motion.

G represents a warp-supporting guard, and H a housing below such guard attached to the front of the lay-race A, the housing I-I having at the bottom a projection h, provided with a horizontal pivot p. I represents a whop-over, turning on said pivot and constituting a lifter, as it has been and is hereinafter termed, having an axial bore 21, Fig. 7, fitted to said pivot and a lifting-lug i on its exposed side to transmit motion therefrom. J represents a vertically-slidinglifterrod having its guides in said housing If and provided near its lower end with a laterallyprojecting stud-arm j, which is engaged by said h1g1? and is conveniently rendered adjustable as to height by an attaching-screw s, for example; and K represents a weft-feeling fork, which is pivoted within the upper end of said housing ll by a horizontal pin 17 and composed of a pair of renewable feelers 7a, of wire, a screw-fastened cap or keeper 7.1 by which the feelers are rigidly held in place, and a periphorally-toothed hub 7;, provided also with a drilled and tapped lug 7;, to which a stop-screw s is fitted, so as to limit the elevation of the feelers by the lifter I through the lifter-rod J, the upper end of this red being provided with rack-teeth in mesh with the pinion-teeth on said hub 7;. (See Fig.

L represents the customary feeler-groove in the top of the lay-race, and Z) a central bridge of wire within the same to afford an intermediate support for the filling-thread crossin g it.

M represents a self-ad j usting spring-finger attached at its front end to the bottom of the breast-beam and projecting rearwardly immediately above the plane of the lifter I, upon which it presses downwardly.

'12. 97. represent oppositely-beveled notches in the bottom of the finger M.

a represents the apex of the lifter I, which is engaged by said notches n n in alternate succession as the lifter moves back and forth with the lay, so as to turn the lifter first in one direction and then in the other for the performance of its functions, and it" represents a readjustingnotch in said finger M, beveled like said notch n but located nearer the breast-beam than'said notch 11. During each retreat of the lay said apex a, of the lifter I is engaged by said notch it, and the lifter is thus turned by the spring-finger M, so as to bring its lug into contact with said stud.- arm j and thereby elevate the lifter-rod J, and by the coaction of said rack-teeth f and. toothed hub 7.2 to turn the fork K, so as to elevate its feelers 7.. The parts are shown in this position in Fig. 1 and in full lines in Fig. 2. 'The shuttle, if it be present, then passes freely under or behind the feelers, and the filling-thread, if all right, is stretched across the fceler-groove L and bridge Z) in the path of the feelers.

Near the beginning of each forward movement of the lay (illustrated, as aforesaid, by Fig. 2 and represented by the arrow as in this figure) said apex a of the lifter I engages with said notch n of the spring-finger M and the lifter is turned into its reversed position, as shown in dotted lines in Fig. 2 and in full lines in Fig. 3, gradually withdrawing the long bearing-surface of said lug 1'? from contact with said studarmj as the released lifter-rod J and feelers 7.; gravitate. If the feelers are intercepted by the filling-thread, the lifterrod J can only partially descend and remains wholly above the plane of the trip-lever D. lonsequently, when the filling-thread is all right, the lower end of the rod J passes freely above and clear of the upper extremity of the trip-lever D, and the belt-shipper is undisturbed. lVhen the fillin g-thread is absent, as in the drawings, the feelers 7t descend to the bottom of the feeler-groove L, and there is consequently a full movement of the fork K, the lifter-rod J is fully lowered, and when the downwardly-projecting lower end of the lifter-rod reaches the upper end of the triplever D in its path the two coact, the lever, turning freely on its pivot, is shifted, as represented in dotted lines in Fig. 2, and its motion is transmitted by the connecting-rod F and crank-arm c to the rod C, turning the latter in its bearings and thereby actuating the belt-shipper, all of which is thus readily accomplished before the reed strikes the lay of the cloth, as aforesaid.

The lay attachments are shownin Fig. 3 in full lines as they appear in the forward position of the lay, whether theloom be running or stopped. After drawing the lay to this position if need be after it is stopped, thelay is pushed back by hand, as represented by the arrow 7 Fig. 3, and during this movement of the lay the apex a of the lifter I is engaged by the notch or of the finger M, and the lifter is thus turned so as to elevate the lifter-rod J' and feelers 7s, as during each retreat of the lay when the loom is running. In case the weaver, in so moving the lay by hand when the crank is on the bottom center, should push the lay back less than the extreme distance, so that the apex of the lifter I would not pass the notch 72 then starting the loom would bring the lay forward to the fell of the cloth again, as represented bythe arrow .2, Fig. 3, with the feelers still lifted and the lifter in the position in which it is shown in dotted lines in Fig. 3, and if it were not for said readjusting-notch n the feelers would not be lowered until the next succeeding pick. Provided with said notch n the finger M at once reverses the lifter and lowers the feelers, so that the lifter-apex a coacts with the notch 92, as above, during the immediately ensuing retreat of the lay.

Details which have not been specified may be of any approved description, and modifi cations such as will be required in adapting the stop-motion to other makes of looms will suggest themselves to machinists accustomed to building looms and loom attachments.

Having thus described our said stop-motion, we claim as our invention and desire to patent under this specification-- 1. In combination with the feelers and corn nections, a whop-over lifter carried by the lay and a relatively stationary finger having beveled notches to engage with the apex of the lifter for turning said lifter to raise and lower said feelers, substantially as hereinbefore specified.

2. In combination with the whop-over litter, lifter-rod, feelers, and connections, a self-adj usting spring-finger pressing upon the lifter and provided with beveled notches to engage with the apex of the lifter for turning said lifter to raise and lower said feelers, substantially as hereinbefore-specified.

3. In combination with the whop-overlifter, lifter-rod, feelers, and connections, a relativel y stationary finger having beveled notches to engage with theapex of the lifter during each advance and retreat of the lay and provided with a supplemental feeler lowering or read 3' usting notch immediately behind the breast-beam, substantially as hereinbefore specified.

4. The combination, with the weft-feeling fork and the vertically-sliding lifter-rod, of a trip-lever turning on a horizontal pivot and adjustable as to its distance behind the breast beam, a vertically-adj ustable bracket to which said lever is so pivoted, adjustable connections comprising a connecting-rod coupled to the lower end of said trip-lever, anda crankarm angnlarly adjustable upon the customary stop-rod below the breast-beam and to which the other end of said connectingrod is coupled, the upper end of said trip-lever projecting normally in the path of the fully-lowered lifter-rod at a point adjacent to the lay in its retracted position, substantially as hereinbefore specified.

' GILBERT PARK.

JOHN E GODDARD. Witnesses:

A. W. CURTIS, DENIS ARSENEAULT.