US1282893A - Loom stop-motion. - Google Patents

Description

J. L. LONG.

LOOM STOP MOTION.

APPLICAHON FILED SEN-14.1917- mszflwm Patented 00'. 29, 1918.

JESSE L. LONG, 01? MANCHESTER, GEORGIA.

LOOM STOP-MOTION.

Specification of Letters Patent.

Patented (Pet. 29, 1918..

' Application filed September 14, 1917. Serial No. 191,384.

To all whom it may concern:

Be it known that 1, Jesse L. Lone, a citizen of the United States, residing at Manchester, in the county of Meriwether, State of Georgia, have invented certain new and useful Improvements in Loom Stop-Motions; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains, to make and use the same.

This invention relates to stop motion for looms.

The object of the invention is to provide an improved form of stopping mechanism which is operative by any one of the treadles, when a treadle strap breaks to stop the loom. In carrying out the invention it is the intention to utilize the warp stop motion'of the loom, in association with the treadle operated mechanism, so that the machine will be stopped in the same manner as when a warp thread breaks.

'In the embodiment which is hereinafter described, the invention is applied to a machine which is provided with a drop wire stop motion, in which detectors or drop wires fall across a feeler bar which vibrates below the set of drop wires. The mechanism of my invention operates against the same feeler bar, upon the breakage of a treadle strap and the consequent falling of the treadle, to cause the stopping of the machine.

In Fig. 1 of the drawings the warp 1 runs over the whip-roll 2 and through the detectors or drop wires 3 of the stop motion mechanism, and thence through the heddle frames 4. The heddle frames are controlled in the usual manner by means of the treadle straps 5, whose lower ends are connected to the treadles 6, the latter being operated in the usual manner by means of the cams 7 upon the cam shaft 8.

The stop wires or detectors 3 form a part of a wellknown warp stop motion, and operate upon the detector or feeler 9 which is mounted upon the rock shaft 10, so that as the shaft is oscillated the lower edge of the detector bar-9 swings in an are below the rock shaft.

Supported upon a bracket 11 which is secured to a suitable fixed part of the frame of the loom, is a horizontally disposed rock lever 12 Whose forward end extends to a point above the free ends of the treadles 6. Said forward end of the rock lever 12 suspends, by means of an adjusting link 13 a substantially rectangular frame 14 which surrounds the whole bank of treadles 6, in such a manner that the sides and bottom of the frame stand wholly free of the treadles when the latter are in normal arrangement, as, best indicated in Fig. 2. The rear end of the rock lever 12 carries a vertical rod 15 in pivotal relation, the upper end of the rod 15 projecting through the horizontal rest 16 of a bracket 17 which is also secured to a fixed point of the frame of the loom in proximity to the detector bar 9. The rod .15 is surrounded above the rest 16 with a stpp collar 18 which is adjustably set by means of a screw 19 so as to limit the downward movement of the rod 15 by striking against the upper face of the rest 15. The upward movement of the rod 15 beyond the limit determined by the collar 18 carries the free or upper end thereof into the path of movement of the detector bar 9, and therefore has the same effect upon the latter as would the dropping of one of the detectors or drop wires 3. I

In the operation of the above described mechanism, the frame 1% which normally stands free of the treadles 6 is caught by the downward movement of a falling treadle which has been released by the breaka e of one of the treadle straps 5. The weig t of the treadle is such that it carries the frame 14 downwardly when it contacts the lower side of the latter, with the result that the rock lever 12 is rocked upon its fulcrum to throw the rod 15 upwardly. As a result, the

.upper end 'of the rod intercepts the feelerbar 9, and stops its vibration, so that the warp stop motion is thrown into operation in the same manner as when one of the detector wires 3 falls. Thus, I have provided a simple mechanism for actuating the stop motion of a loom upon the breaking of a treadle strap, and I have found by the use of this mechanism that the bad cloth or seconds from a loom will be reduced at least twenty per cent. The mechanism is particularly adapted to use on looms with three or more sets of harness, where, when one shade is dropped, two or more are left to'operate so that a lot of bad cloth is made. By the use of a drop partial stop motion, the number will be instantly stopped, and this manufacture of bad cloth prevented.

What I claim as my invention is In a loom, the combination with the harness treadles of a warp stop motion having a vibrating detector bar, a loom stop motion comprising a support fixed above the treadles and below the vibrating detector bar, re-

aeaeea spectively, a rocking arm adjustably pivoted to the support above the treadles, a rest on the 'loom frame below the vibrating bar, a 7 rod pivoted to one end of the arm and working through the rest to be projected into the path of the vibrating bar, an adjustable collar on the rod and normally seated on the rest, a frame about the treadles having a Jesse L. Lone. Witnesses L H. HARDEN, v W. T. Rosana.

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