US841432A - Loom. - Google Patents

Description

PATENTED JAN. l5, 1907. C. PERHAM.

` LOOM.-

UPLIOATIONHLBD MAY 1, 190s. 2 SHEETS-SHEET 1 No'. 841.5432.Y A

lill-l] f. u] 1 um PATENTE-D JAN. 15, 1907. C. F. PRHAM.

LOOM'.

APPLICATION FILED MAY 1l 1905.

2 SHEETS-SHEET 2.

vCHARLES F. PERHAM. OF LOWELL, MASSACHUSETTS.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application led May l, 1905. Serial No. 258,167.

To all whom t may concern:

Be it known that I, CHARLES F. PERHAM, of Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Looms,

of which the following is a specification.

This invention relates to looms, and has for its object to provide improved means for effecting a disconnection of the driving power ro when one or more Warp threads become broken or so entangled as to form a float To this end the invention consists of a device comprising detectors which are adapted to rest upon the warp-thread and to drop by x5 gravity in the absence of warp-threads and so to cause the lay-beam to actuate suitable mechanism adapted to release the shippinglever by means of which the driving power is connected to the driving-shaft.

On the accompanying drawings, forming a part of this specification, Figure 1 shows in vertical section a portion of a loom equipped with a device of which the inventionvconsists. Fig. 2 is a front elevation of a portion 2 5 of the warp-detectors. Fig. 3 is a plan of the power-releasing mechanism. Fig. 4 is a perspective view of a fragment of the reciprocatory feeler. Figs. 5 and 6 illustrate the mechanism whereby the lay effects the re- 3o lease of the power.

The same reference characters indicate the same parts in all the figures.

Y The invention herein illustrated is applicable to any loom of standard pattern having 3 5 the principal parts arranged as shown by M- TO indicates the right-side frame, 11, the

breast-beam; 12, a shaft; 13, the lay carryr ing the reed 14,' 15 15, the heddles, 16, the

,l 4o arch; 17, the lease-rods, and l8the warp.

' 19 is the shipper-rod, mounted on the frame and adapted to move a suitable clutch (not shown) into and out of engagement with a source of power.

i5 20 is a shipper afiixed to the rod 19 and extending through a slot 21 in a bracket 22, secured to the frame 10.

A spring 23 on the rod 19 normally holds the clutch -out of engagement, forcing the 5c shipper 20 in the direction-indicated by the arrow in Fig. 3.

When the shipper is moved against the tension of the spring 23 to the position shown by Fig. 3, it catches upon a shoulder 24 in 55 the slot 21 and remains there until disengaged. Meanwhile the power is applied,

causing the shaft 12 to rotate, the lay toescillate between the breast-beam 11 'and the heddles 15, and the heddles to reciprocate normallyholds said rod forward and the outer end of the lever 25 against the sto p-pin 27.

31 is a latch pivoted to the rod 28 ,and adapted to be engaged by a bunter 32, affixed to the lay 13 when held in the path of movement thereof. 'The latch 31 is adapted to be lifted by means hereinafter described 'and held in the path of movement of the bunter 32 (see Fig. 6) when the Warp-.threads break .or form a iioat. When in this osition, the bunter forces the latch and the rod 28 toward the rear, against the tension of the spring 30, and causes the lever-25 to force the shipper over the shoulder 24. When the shipper is thus released, the spring 23 acts, as already described, to disengage the drivingclutch from the source of power. anism for disengaging the driving-clutch is similar to that shown in Letters Patent No. 654,915, granted July 31, 1900, and is merely supplementary to the present invention, which is the means hereinafter described for controlling said mechanism.

33 is a girth which extends laterally across and above the Warps 18 between the heddles and the lease-rods and which is suitably secured to the upright portions of the arcl 16. Said girth constitutes a guide for a reciprocatory feeler 34, of which the upper surface is serrated to form abutments 35 and notches 36.

37 is a pin projecting from the feeler 34 and connected to one end of a strap 38. Saidv strap extends over an idle pulley sector or segment 39, pivoted upon a stud 40, and has at its other end a yoke 41, through which the.

free end of the latch 31 extends.'

The yoke 41 is connected by a helical spring 42 to the free end of a lever 43, pivoted on a stud 44 in the frame 10. Said lever has a trundle-roll 45, which cooperates with a cam 46, affixed to the shaft 12, so that each time the cam revolves it causes they strap 38 to draw the feeler 34 toward-one side of the frame, a spring 47, connected to the pin 37, serving to return the feeler to its This mech- IOO IIO

normal position. By reason of this construction the feeler 34 is reciprocated laterally and the yoke 4l raised and lowered constantly during thel operation of the loom.

The latch 31 is normally held up in the path of the bunter 32 by the yoke 31 and the spring 37, as in Fig. 6, and it drops by gravity when the yoke 41 is drawn down by the lever 43 and the spring 42, which is stronger than the spring 47 at the upper end ot the stra 38. The cam 46 is so timed as to depress the Fever 43 during the rearward movement of the lay and the bunter 32.

50 50 are a plurality of warp-detectors, which are adapted to coperate with the abutments 35 of the feeler 34. They straddle the feeler'34 and hang loosely in vertical guides in the girth 33. Each detector'has one leg which extends below the girth 33 and a lateral extension 51 at the end thereof. The extensions 51 are adapted to rest upon the warps and to be supported thereby so that the spanning ortions 52 may be above the tops of the a utments 35. The spacing of the detectors and the length of the extensions 51 is optional; but in the present instance they are so arranged and constructed that each engages several warp-threads.

It will be observed by inspection of Fig. 2 that the extensions 51 overlap slightly, thereby forming a practically continuous extension, so that the warp-threads cannot become lodged between them.

As the heddles shift the two sets of warp.- threads, first one set and then the other engages and supports the detectors, the feeler 34 reciprocating meanwhile during the periods when the detectors are raised.

lf it happens that two or more adjacent warp-threads become broken or so entangled as to cause an open space through which one of the detectors might drop, the portion 52 of the detector drops upon the feeler 34 and into one of the notches 36 and upon subsequent action of the cam 46 locks the feeler and the strap 38 and yoke 41 by engagement with one of the abutments 35 of the feeler. The action of the cam 46 and arm 43 is therefore spent in distending the spring 42, connected to the yoke, and the latch 31 remains in the path of the bunter 32, as in Fig. 6, eiecting the disconnection of the driving ower, as already described.

It will be observed that the abutments 35 of the-feeler are shaped like ratchet-teeth, so that if a detector should drop while the yoke and latch are depressed it would permit the eeler to be returned by the spring 37 to its normal position, thus elevating the latch before locking the feeler.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made or all of the modes of its use, I declare that what l claim is- In a loom, the combination with means for disconnecting the power, of a reciprocatory member extending across and above thewawi warp in a fixed guide, a plurality of detectors mounted in said guide and independently movable transversely with relation to said reciprocatory member, said detectors being adapted to engage either said member or the warp-threads and to be held out of engagement with said member by the warp-threads, power-actuated yielding means for moving said member in one direction, yielding means of relatively less strength for moving said member to normal position, a plurality of abutments on said member adapted to be engaged by said detectors and to be locked thereby against movement with said poweractuated yielding means, a bunter on the lay, a movable latch adapted to be engaged and moved by said bunter and to be moved out of the path of movement of said bunter by `said power-actuated yielding means when said reciprocatory member is free to reciprocate, and means connected to said latch and movable therewith when moved by said bunter for effecting the actuation of said means for disconnecting the power.

In testimony whereof I have affixed my signature in presence of two witnesses.

CHARLES F. PERHAM.'

Witnesses:

M. B. MAY, C. C. STECHER.

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