US654915A - Loom. - Google Patents

Description

Patented m 3|, 1900..

No. 654,9l5.

c. F PERHAM.

. LUDM.

(Application filed Nov. 4, 1896. Renewed May 31, 1900.)

3 Sheets8heat l.-

(Np Model.)

INVENT'URI @h M m: NORRIS PETERS cu, Pam-mums wpsnmmou, o. c.

Nu. 654,9l5. Patented July 3|, I900.

' C. F. PERHAM.

LOUM.

(Application filed Nov. 4, 1896. Renewed May 31, 1900.) (No Model.) 3 Sheets-Sheet 2.

I l a I l J ll 1-1: 1 '4 I v' M/ EALW No. 654,915. Patented July 3|, 1900..

c. r. PERHAM.

LOOM.

(Application filed Nov. 4, 1896. Renewed May 31, 1900.) (No Model.) 3 SheetsSheet 3.

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MAM, W

m: ubarm FETERSPOH mmuurna. WASHINGTON u c.

UNITED STATES" CHARLES ros'rnn PERI-1AM, or LOWELL, MASSACHUSETTS;

Loon/i.

sPEo-rrIoArioNromifi part of teammates. 654,915, data 'Jui e1, 1906. Application filed November 4, 1896. Renewed m 31, 1900. Serial No. laser. on model.)

' To all whom it may concern:

Be it known that I, CHARLES FOSTER PER- HAM, of Lowell, in the county of Middlesex and State of Massachusetts, have. invented certain new and-useful Improvementsin Looms, of which the following is a specification.

This invention relates to looms, and has for its object to provide an improvement in the same for cutting off power from the power-shaft when one or, more :of the warp-" threads are broken or become entangled, so as to cause What is termed a float.

To this end the invention consists of a de-' vice for acting on the shipper to disconnect the power-shaft from the power supply and constructed and arranged to be operated either by the breaking of one or more warpthreads in case relatively-large threads are used or to operate when the warp-threads are entangled with a broken thread, so as to cause a float, all as I shall now proceed to describe in detail and thenpoint out in the claims hereto annexed.

Reference is to be had to the accompanying drawings, and to the letters marked thereon, forming a part of this specification, the same letters designating the same parts or features, as the case may be, wherever they occur.

Of the drawings, Figure 1 is a plan view of the loom, parts being broken away, showing my improvements. Fig. 2 is a vertical longitudinal section through the same, parts 'being shown in side elevation. Fig. 3 is a rear elevation of a portion of my float-detector. Fig. 4 is a vertical cross-section through the same on the line 4: 4 of Fig. 3, showing the parts in the normal positions which they occupy when the warp-threads are all intact. Fig. 5 is an enlarged view illustrating the position of the latch connected with the shipper when the threads are unbroken. Fig. 6 is asimilar view, but showing the position assumed by the parts in case there is a broken warp or a float. Fig. 7 is a perspective viewof the detectors and their supporting-beam. .Fig. 8 is a similar perspective View showing one of the feelers as having dropped by reason of the threads being tangled.

I have illustrated onlya portion of a loom, and it will be understood that my invention is not limited to the details of construction thereofg since it may be applied to a loom of any style or kind. A On the drawings the loom is shown as having side standards a, connected by an arch I), a breast-beam take-up rolls d for the ;cloth, lease-rods e e, and harnesses f f, all of which may be similar to those now usually employed.

The lay-beam g' is supported on swords 72, carries the reed i, and operates in the usual way.

Projecting rearwardly and laterally from eachstandard of the arch Z9 is a bracket j or 70, a bearing=block j being securedto the bracket j and a bearing-block being secured to the bracket 75. In the said bearing blocks is mounted a bar or beam Z, which supports the detectors, to be hereinafter described, and directly above the said bar or beam is j ournaledashaftm,havingcylindrical 1 ends m, the body of the shaft being square in cross-section. Preferably the bearingblock is pivoted to the bracket j bya hinge- .pinj (shown as a bolt,) and the bearing-block 70 has a slot 10 to receive a bolt k provided with a wing-nut7c Normally the bolt and nut lock the bearing-block k firmly to the bracket 70; but they may be loosened so as to swing the bar land the shaft m, with the bear ing-block 70, around the hinge-pin 7' which passes through the bearing-block j and the bracket j. The bar Z is arranged'just above the warp-threads, which are carried upward by the heddles to form the shed forthe shuttle, and between the said bar Z and a strip Z, secured thereto, are placed a number of vertically-movable float-detectors n. Each detectoris formed of awire bent to have a vertical portion 71., sliding in a groove Z in the bar Z or the strip Z, a horizontal portion 12. passing above the bar Z and to the front, a short downwardly-extending portion n sliding in grooves Z in the front face of the bar Z, and

a forwardly-projecting end 01 extending at right angles to the front face ofthe barZ. The lower end n of the vertical portion n is bentlaterally and at right angles to the portion n and parallel with the bar Z, being then bent upward, as at n", and forward, as at n, so as to extend under the bad and limit the upward movement of the detector. The de 'tectors are arranged so closely together that the horizontal portions n overlap each other. and rest loosely upon those warp threads which are elevated by one of the harnesses. As the warp-threads are alternately elevated and depressed by the harnesses the warp-detectors rise and fall with them, dropping downward when one set of threads is depressed and rising upon the alternate threads when they are elevated.

Projecting downward from the square shaft m is a feeler ,consisting of a long'metallic strip extending the entire length of the detectors acrossthe warp; It has'an upwardliy forward end a hook passing through an.

eye g .on the lay-beam. The means connectingthe lever 19 with the arm 10 of the shaft m consist of. a tension-spring q, having one end connected to the arm m. and the other end connected to an eye (1 on the arm p, and

. the link q, secured to the lever 12 and havinga forked end, bearing against the bent end of the arm. m Thus itwill be seen that as the. lever 19 is drawn forward by the laybeam- 9 the arm, 'm will be forced forward by the link g and when the lay-beam moves backward the spring q will be drawn back-; ward by the lever 19., so as to draw the arm m backward also. Thus the shaftm is rocked positively in. one direction and is rocked yield-i ingly in the other direction, so that if it is locked against. motion the lever 19 may be reciprocated by the lay-beanrwitllout breakingany of the parts. a

The end of the shaft m opposite that. from which extends the arm m is provided with a. forwardly-projecting arm 0", having on .its

free end afhook r, the said hook being con-- n-ected' by. links s .s with a dog t on a bar If, having its rear end mounted slidablyin a bracket t on the arch b and having its other end jengaged with. a lever t fulcrumed, underneath the breast-beam. by-a pin The shipper-lever u' is mounted on the shippershaft u", by means of which the clutch n for imparting power from the belt-wheel u to the power-shaft a is operated and the power is supplied to and disconnected from the opcrating parts of the loom. The. end offthe lever i bears against the shipper-lever, which when-the power is applied to the power-shaft of the loom dies in a" notch in a bracket. on. the breast-beam, so t'hati'f the end ofllhesaid lever i? be'moved' inward it. will lift. thejend of the; shipper lever out of the'not'c'h-and astrong spring n? will draw the shipper-lever forward, soas to unclutch the driving-wheel from the power-shaft.

The swords of the lay-beam have a crossbar h", provided with a finger h, arranged to engage the dog if when the latter is raised,

"as I shall hereinafter describe. 0

The operation of the parts is as follows: The vibration of the lay-beam causes the oscillation of the arm 19, which in turn rocks the shaft m in its bearings. The feeler 0,

which is connected with the shaft m,vibrates through an are a little greater in length than "the length of the bent ends W of the fioat-detectors, so that when the lay-beam is in its rearmost position the edgeo of the strip bears against the bar Z, and when the laybeam is inits foremost position the edge 0'- will be moved away from thebar'l, so as to lie in. a. vertical plane a short distancein front of the ends it. As the lay-beam moves forward to accomplish its'work theharnesses are ope-rated in opposite directions, sothat while the feeler o is in its forward position thefloat detectors resting loosely onthe warp-threads dropwith one set of threads behind theedge 0 and are elevated by the next set of threads before the lay-beam reaches its rearposition. If it should happen that" one of the warp threads becomes entangled with those adj-a cent to it, so as to cause a float,- that floatdetector which is directly over the. entangled threads will drop, as shown in Figs-6 and 8, while the lay-beam isforward, so thatwhen it moves backward the edge 0 of the feeler 0 will come in contact with a projecting end at of the float-detector and be prevented from I vibrating. Therefore the arm Twill be held -.in an elevated position and the dog twill be sup-ported in its raised position to receive the finger h on the lay-beam, so that as the laybeam moves backward it will carry with it the bar t, thereby/rocking the lever i on its axis and disengaging the shipper-lever,;so as =to unclutch the driving-wheel from iftswsghaft and stop the-loom from operating. ;wi llbe.seen.thatthe instant one of thewarp-- threads becomes sufficiently entangled with Thus it i n its adjacent threads to cause afloat,- the-loom will cease operating and notify -th'eattendant that. something is. wrong. It will be alsoseen that the-bentportions n of the fioat detectorswhich rest upon the warp-threads overl-apeach otherto aconsid'erable extent, so as to: pre- ,vlent. any'of the threads from slipping between t; em. r I a In practice each of the detectorsrestsiupon from five to seven warp-threads, and conse quently it would not operate tosto-p the loomuntil that number became entangled but it isevident that-the number ofthreads foreach detector may be varied. It will be-liskewise understood that, if desired, whenworking with coarseyarn theremay bea singledeteetorefor eachwarp-thread, so that the loom will jibe brought toa standstillupon the breaking of a single thread}, but I have-shown the do tectors as not operated by the breaking of a single thread, since in weaving print-cloths and other fabrics it is frequently the case that the breaking of a single Warp-thread, unless it causes a float, is not deleterious and does not materially injure the cloth.

By employing a yielding connection between the lever and the arm m of the rockshaft m the rock-shaft may be held from move ment without afiecting the operation or movements of the said lever 19.

By supporting the detectors upon the bar Z in the rear of the harnesses they are entirely independent of the heddles and the a other parts of the harness and do not require the movable parts of the loom to be specially pre;

' pared. They are always entirely above the upper threads in the shed, and being easy of access may be removed and replaced with great ease and without affecting the operation of the loom or without changing any of the operative parts thereof. By having their lower ends resting loosely on the threads they do not tend to strip the sizing from the latter or injure them in any way.

Having thus explained the nature of the invention and described a way of constructing and using the same, though 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 I claim is- 1. In a loom, the combination with means for disconnecting the power from the operative parts of the loom, of aseries of detectors mounted independently of the lay and the harness and arranged above the warp-threads and having theirlower ends resting loosely on the upper threads of the shed, a support above the warp in the rear of the harness for said detectors and means coacting with said detectors and operatedby one of the moving partsof the loom for actuating the disconnecting means, when the warp-threads break or become entangled.

2. In a loom, the combination with means for disconnecting the power from the operative parts of the loom, of a harness, a lay adapted to actuate the said means, detectors each arranged to connect the said device and the said means so as to effect the stoppage of the loom when the warp-threads are broken or entangled, said detectors each resting loosely at their lower ends upon two or more threads and-a support located above the warp in the rear of the harness for said detectors.

3. In a loom, the combination with means for disconnecting the power from the operative parts of the loom, of a series of detectors having their lower ends restingloosely on the warp-threads and arranged to connect the lay with said disconnecting means, when the warp-threads break or become entangled, to operate said disconnecting means, said detectors being mounted independently of the lay and the harnesses and a support for said detectors located above said warpin the rear of the harness.

4. In a loom, the combination with means for disconnecting the power from the operative parts of the loom, of a dog connected with said disconnecting means, a lay-beam, a series of detectors mounted independently of the lay-beam and the harnesses and having their lower ends resting loosely upon the warp-threads and arranged to move said dog into the path of the said beam when said warp-threads are broken and become entan gled and a support for said detectors located above said Warp in the rear of the harness.

. 5. In a loom, the combination with means for disconnecting the power from the opera tive parts of the loom, of a dog connected with the disconnecting means, a lay-beam, a

feeler connected to said dog and operated by said beam, a series of detectors having their lower ends resting loosely upon the warp threads and coacting when the warp-threads break or become entangled with the feeler to move said dog into the path of the lay-beam and a support for said detectors located above said warp in the rear of the harness.

6. In aloom, the combination with theshipper, the lay-beam, and a dog for operating said shipper arranged to lie out of the path of the lay-beam, of a feeler connected to the device and reciprocated by the said lay-beam, a series of detectors each having a bent lower end to rest loosely upon the warp-threads, and arranged to drop into the path of the feeler when the threads become broken or entangled, and to thereby cause the feeler to hold the dog in the path of the lay-beam for the pur pose described and a support for said detec tors located above said warp in the rear of the harness.

7. In a loom, the combination with a lay, andmeans for disconnecting the power from the loom, of a series of float-detectors, each formed of awirehavinga bent lower end rest ing upon the warp-threads and arranged to cause the actuatingof the disconnecting means and a support for said detectors located above said warp in the rear of the harness.

8. A float-detector form ed of wire and hav; ing a horizontal portion to rest on the thread transversely thereof, a vertical portion,'and

roe

an end projecting forward parallel with the warp-threads in combination with a feeler, and mechanism coacting with said feeler to stop the 100111 as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 22d day of October, A. D. 1896.

CHARLES FOSTER PERHAM.

Witnesses:

A. D. HARRISON, P. W. PEZZETTI.

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