US1420390A - Loom harness stop motion - Google Patents

Description

H. 'M. SMITH. LOOM. HARNESS ST OP MOTION.

APPLICATION FILED MAR- 15, 1922. r

Patented June 20, 1922 sate . I-I-AMPTONJM. .siu'rrmor" GREENVILLE, son'ri oARoLIN-A.

LOOZM HARNESS strori/ro'rion. v

Application filed Tv'iarh s, 1922. 'Seria1 No. 543,936.

T 0 all 20 ham it may concern:

Be it known that I, HAMPTON M; SMITH,

State of South'Carolina, have invented eer tain new and useful Improvements in Loom Harness Stop Motions, of which the following is a "specification, reference being had to the accompanying drawings.

This invention-relates to stop motions .for

looms, and particularly to a motionclesigned' to stoptheloom upon the drop of a harness frame, either due to'the dropping of a sup-' porting strap, jack or wire. v

The 'generalobject of the invention is to provide a device of this character which 1s very simple and which is particularly adapted to'a'Draper loom. V

A further object istoprovide a device of this character includinga pivoted/arm normally held in a raised position by'a spring and including mea'ns whereby the spring may be readily tensioned so as to normally hold the pivoted arm in a raised position to permit the pivoted arm to drop upon the descent ofany one ofthe harness frames.

Another object is to provide a'mechanism of'this character which will accommodate the shipper lever ordinarily found on Draper looms.

Other objects will'appe r inth'e course of the following description.

My invention is illustrated in the-accompanying drawings, wherein Figure lis a perspectiveview of my harness stop motion;

Figure 2 is an enlarged fragmentary side elevation thereof and showing it in conjunction with the usual feeler finger and boX below which the feeler finger moves;

Figure 3 is a side elevation of the guide for the blade of the device.

Referring to these drawings, 10 designates a support having a base 11 upon which the support is adjustably mounted by means of the screws 12. The upper end of this support 10 has a horizontally extending head 13. One end of this head is so formed as to pivotally support a lever 14:. Preferably one end of this head is formed with the upwardly extending lugs 15 through which passes a pivot bolt 16 upon which the lever 14 is mounted. The opposite end of the head 13 is upwardly extended and vertically slotted to form a guide 17 between which the ex- Specification of Letters-Patent. 1 Patented; J 1111 :20,- 1-922,

tremity 'of the lever 14 "operates. The headl adjacent the. guide lfis slotted,':as 19, and the lever is formed with a "downwardly bowed portion "20 which operates through this slot. The oppositeendbftlre lever is pivotally connected to'a' blade "21, the upperend ofwhich is inclined,*asat Attached to the head 13 adjacent thelug's V 15 is an angular arm 23, the verti 'cal'portion of which extends throughthe head andis. screw-threaded and held in adjusted position by means of nuts 24. "By'thi's means the arm may be adjusted -'v'ertically. The extremity of the :arm is engagedwith 'an' eyeon one end of a coiled contractile spring 25,the opposite end of which is formed-with 'a hook adapted to engage over the lever 14and spe-' cifically in the notchesf26. a By providing a plurality of 110tCl16'S,i/h6 spring may "be shifted so as toshi'ft'its upper end toward' or from thelpivot'bolt *16 and thus "more or lessadjust the tension-of the spring, "and by adjusting the nuts24ciit isobviousth-at the' arm 23 maybe moved 'up or down "and thus further adjust the tension of the spring. The blade 21 extends 'upthrough the slot 26 of aguide bracket 27, theshaii'k o ffthis guidebracket'being inclined with reference to the body ofthe bracket and being at tached to one of 'thegirths 28 below which the feeler bar 29 oscillates in the-usual man ner. Th'isfeeler bar may be constructed in any suitable-'mannembut inthe Draper l'oom this feeler bar "consists of Hat,-horizoiitally disposed plate which oscillates laterally be low the girths. Normally the upper end of the blade 21 is below the plane of oscillation of the feeler bar 29, but if any one of the harness frames 30 should fall through the breaking of a harness strap, wire, jack or hook, the corresponding frame will drop downward at one or both ends and its weight will depress the forward end of the lever, as illustrated in dotted lines in Figure 2, raising the blade so that the blade will be disposed in front of the feeler bar, preventing its operation and stopping the loom by the ordinary stop mechanism thereof.

It will be understood, of course, that there are two girths 28 which guide the ordinary drop members which receive the warp threads. This feeler bar 29 is vibrated by free end of the blade 21, it, through mechanism not necessary to state, releases the shipper lever and stops the loom.

It will be seen that this mechanism is very simple and may be very cheaply made. The coiled spring 25 is an ordinary spring which may be easily replaced at any time in case its tension relaxes or may be easily adjusted at any time so that the lever 14 is just urged upward by a force sufficient to hold it in this positionbut which is not suflicient to hold it up upon the dropping of one of the frames thereon. The U-shaped bend made in the lever 14 accommodates the usual shipper rod 31 which, in the Draper loom, extends transversely of the loom forward of the harness disposed head, a lever pivoted upon the head,

a bracket carried up on the head and extend-Y frames and for which accommodation must be made.

I claim 1. A loom harness operated stop motion including a supporting member, a lever pivoted on the supporting member intermediate its ends, means urging one end of the lever downward, means for limiting the upward movement of this end, and an upwardly extending blade pivoted to that end of the lever adjacent the urging means and adaptedv to be disposed adjacent a teeler.

2. In a loom harness operated stop motion, a supportingmember having a horizontally ing-beneath one end of the lever, a coiled contractile spring between the bracket and the lever, a stop motion actuating blade pivoted to this end of the lever, and a slotted member carried upon the head between which the other end of the lever operates, this last named end of the lever having a U- shaped bend to accommodate the shipper rod of a loom.

3. A harness stop motion of'the character described including a supporting member 7 having a horizontally disposed head, one

end of the head being formed with upwardly extending lugs, the opposite end of the head having a vertically slotted portion and the head being longitudinally slotted adjacent the vertically slotted portion, a lever pivoted between said lugs, the lever adjacent one end being formed to provide a depending, U-shaped bend operating through said last named slot, the extremity of the lever being extended to operate through the vertical slot, the opposite end of the lever carrying an upwardly extending blade, a bracket mounted upon the head and extending below the same and toward the blade, and a coiled contractile spring engaging one end. of the bracket and at its other vend engaging the lever between the pivotal point of the lever and the blade.

4. A harness stop motion of the character described including a supporting member having a horizontally disposed head, one end of the head being formed with upwardly ex tending lugs, the opposite end of the head having a vertically slotted portion and the head being longitudinally slotted adj mm the vertically slotted portion, a lever pivoted between said lugs, the lever adjacent one end,

being formed to provide a depending,

U-shaped bend operating through said last named slot, the extremity of the leverbeing extended to operate through the vertical slot,

the opposite end of the lever carrying an upwardly extending blade, a bracket mounted upon the head and extending below the same and toward the blade, a coiled contractile spring engaging one'end of the bracket and at its other end engaging the lever between the pivotal point ofthe lever and the blade,

and a guide bracket having a slot through which the bladejpasses, s'aid'guide bracket having means whereby it may be attached to one of the side plates of a drop member'box.

In testimony whereof I hereunto aflixmy signature.

HAMPTON M. SMITH.

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