US1238947A - Pick-finding mechanism for looms. - Google Patents

Description

.G. W. SHACKLETON. PICK FINDING MECHANISM FORALOOMS. APPLICATION FILED APR. 13, 1912.

Lwwm

Patented Sept. 4,1917.

APPLICATION FILED APR. I3, IBIZ- Sept. 4; 1917. EETS- 4SH SHEET 2.

M m m P.

G. W. SHACKLETON. PICK FINDING MECHANISM FOR LOOMS. APPLICATION-FILED APR. 13. 1912.

9m Patented Sept. 4,1917.

4 SHEETS-SHEET 3.

dad 1'1 02 w NI 0F 1'! W K Ls G. W; SHACKLETON. PICK FINDING MECHANISM FOR Looms.

'APPLICATlON FILED APR. 13, I9I2.

' Patented Sept. 4, 1917.

4 SHEETS-SHEET 4.

UNITED sas PATNT FFI@.

GEORGE WILSO1\T SHACKLETON, OF BRAITI-IWAITE, KEIGHLEY, ENGLAND, ASSIGNOR TO THE FIRM OF GEORGE HATTERSLEY AND SONS, LIMITED, OF KEIGI-ILEY, ENG- LAND.

Specification of Letters Patent.

PICK-FINDING- MECHANISM FOR LOOIVIS.

Patented Sept. a, 1917.

Application filed. April 13, 1912. Serial No. 690,605.

To all whom it may concern:

Be it known that I, GEORGE VVILSON SiiAoKLn'roN, a subject of the King of Great Britain, and resident of Braithwaite, .Keighley, in the county of York, England, have invented a new and useful Improvement in Pick-Finding Mechanismfor Looms, of which the following description, together with the accompanying sheets of drawings, 1

. the shedding of the warp is effected by cams or tappets and wherein one shuttle alone is used, little difficulty is experienced in finding the proper place in the warp where the failing or broken shot of weft has happened, whereas in other forms of looms wherein change shuttle boxes and dobby mechanisms or jacquard mechanisms are employed for operating the weft and warp threads respectively, considerable care and experience on the part of the weaver have to be exercised in finding the proper place and readjusting the several parts so that the effective weaving operations may be recommenced.

In these latter types of looms such adjustments are styled laggingback and it is to the application of devices for automatically controlling or putting into action this lagging back mechanism, causing same to carry out the lagging back operations, readjusting the several mechanisms, and continuing the forward motions of the loom until all the operating parts are brought back into position before finally arresting the motions of the loom, that my invention more particularly relates.

According to my said invention I make use of devices whereby when the weft.detector mechanism indicates failing or broken weft the ordinary weaving operations of the loom are arrested automatically, other operations are then started and the readjustment of the loom to bring the. warp threads and shuttle boxes into their proper relative positions for the restarting of the weaving operations are effected, on which all the operations of the loom are suspended for the weaver to supply the absent or mend the broken shot :of weft as the case may be, after which, the effective operations of the loom maybe recommenced, thus obviating the care heretofore necessary for effecting saidadjustments as when devices are employed which only dlsengage the several parts or which disengage same and merely .reengage them to effect reversalsin .thelr direction of motion, relying upon the weaver to start the loom pick by pick to arrive at the desired point or position.

In the accompanying. sheets of drawings which are illustrative of ,my said invention:

Figure. 1 is a sectional end elevation of sufficient of a loom to show the application thereto of my improved parts.

Fig. 2 is a similar view to. Fig. 1 but shows the parts as seen in the opposite directlon.

Fig. 3 is a plan of the parts shown by F 1g. 1.

Fig. i is an elevation as seen from the front of :the loom and shows the parts that are illustrated by Fig. 1.

Fig. 5 is a plan of certain of the parts hereinafter described.

Fig. 6 is a perspective view showing parts in detail hereinafter referred to.

Fig. 7 is a perspective view of a toothed driving wheel constructed as hereinafter described.

Similar letters and figures of reference indicate like parts throughout the several views.

3A indicates the end frame of the loom, B

, the slay board or lay, C the breast beam or otherwise have hid might be more clearly seen.

1 in carrying my invention into effect I makeuse of weft detector.mechanism either of the type wherein the weft fork is situated in the center of the loom or with the. weft fork on one side of the loom or on both sides of said loom, these weft detector mechanisms being old and of well known construction. However, instead of said weft fork mechanism operating the belt shifting mechanism to arrest the motions of the loom entirely, I now arrange this detector mechanism to actuate devices as hereinafter explained.

On the lay B of the loom I mount the weft detector mechanism in the usual manner so that the dagger a actuated by same may be made use of. Said dagger is fixed to the end of a rod corresponding to the rod 37 in British Patent 3897 of 1898. This dagger a is arranged to engage with a hunter 1) when the lay approaches the front of the loom in manner well understood except in this case I arrange said hunter 6 as actuated by said dagger a not to be moved sufficiently far thereby as to cause a stoppage of the loom, but merely to be moved sufiiciently that it will carry the rod 0- with it so that by the lever (Z to which said rod is connected, the shaft d may be caused to oscillate. As this shaft (Z oscillates it carries with it the lever 6Z2 which is fixed upon it and this lever d by the rod (Z and lever cl raises the catch (i (since said lever (Z is fixed upon the shaft if; to which is also secured the catch 6Z5) from retaining the clutch e in its position shown by Fig. 1. This clutch e is in the form of a bell crank lever (see Fig. 6) pivoted at 6 upon a bracket [L1 which is fixed so as always to travel with the cam h, and this clutch c has, as its engaging member, a projecting part c which engages with the parts hereinafter described. The return actions of the lever (Z are assisted by a retracting spring (Z which is connected to the upwardly extending arm of said lever (Z On this clutch 6 being thus liberated its spring 0 will cause it to descend so that a projection 6 thereon will fall into the path of motion of projections 4 (shown in Fig. 2 as if the wheel 7 has been cut away from them) which extend laterally from the wheel f, said wheel 7 being mounted to retate upon the shaft 9, thus this wheel 7 will carry said clutch 6 along with it.

The wheel 7 is mounted to run loosely upon the shaft 9 and is arranged to gear with the wheel f mounted upon the shaft E of the loom.

Mounted also to run loosely on the shaft 5 is the cam h which cam it has secured to it a bracket 7&1 arranged to have pivoted upon it the clutch e as well as have attached to it the spring 0 so that as the cam 7b is rotated said bracket b is carried with it and said cam h is rotated by the clutch e engaging with the projections t on the wheel 7".

Mounted to oscillate loosely on the pin (which is carried by the bracket w) is a lever 76 which has an arm [0 extending vertimounted another lever m which is held in the normal position shown by being connected by the rod m to the lever 91. which is fixed upon the shaft (Z hereinafter referred to, while upon the front outer surface of the cam it is fixed another cam piece 10 which cam piece ;0 (as the cam it carries it with it) will come in contact with the lower end of the lever m and so actuate through the rod m the lever 12 and consequently (through the shaft (Z the lever (Z and rod 0) move the hunter 6 to cause same to pass to a position beyond that in which it could be moved by the dagger a, at which time the end 6 of the slot within said-hunter will strike the pin on the knock-0E lever b and so entirely arrest the motions of the loom. The knock-off lever b as conventionally shown. in Fig. 1 is common and well known. The upper portion thereof which is transverse the breast beam has a lateral portion which extends horizontally and is pivoted at the outer end of a slotted bracket. aflixed to one end of the breast beam. In the slot of this bracket slides the handle of the shipping lever of the loom, which lever normally occupies the inner end of the slot. When the shipping lever is being set to cause opera-' tion of the loom, it slides along the slot until it reaches a notch therein, meanwhile moving lever?) towardthe lay. The shipping lever will be held in the notch by reason of its construction and arrangement, and while it is in the notch the belt of the loom will be on the fast pulley. l/Vhen the shipping lever is in said notch, the lever b occupies its position nearest the lay. Upon operation of the member 7) to stop the loom, the inner end of the 'slot of member, 7) contacts with the pin 6 which is afiixed to the knock-off lever, causes said lever to swing horizontally to the front of the loom and press the shipping lever from its notch, and the shipping lever automatically slides in the notched slot to shift to the loose pulley the belt by which the loom is operated. I The actions of the foregoing parts are as follows When the weft fork mechanism indicates a hrokenor failing shot of weft the dagger a is adjusted in manner well known so as to strike the hunter 1) which is moved sufficiently by it to permit the clutch e as actuated by its spring to engage with the proections 4 as abovedescrihedthus the cam h 1s coupled to the wheel f and begins its rotary motions from the position shown by Figs. 1 and 2. ()n commencing its motions said cam it first raises the lever 0 against its ret acting spring 7:" thus forcing the rod 7F vertically to disengage the picking mechanism and reverse the actions of the pattern surface mechanism in the dobhy or acquard and that for governing the shuttle boxes, which mechanisms for reversing said pat tern surfaces are old and well known, as in British Patent 8000 of 1897. The cam h then continues its motion to permit the loom to run forward and effect the reverse movements of the pattern surface mechanisms through the desired space until the part 7 of said cam it is reached so that the lever is is permitted to descend, its descent being only suflicient to bring back the coupling devices which have effected the reversal in the movement of the pattern surfaces but not to descend sufficiently to reengage the picking mechanism. The cam it still continues its rotation and this continuation is sufficiently long to permit the pattern surface mechanisms to advance in their proper directions to bring the desired and proper parts of their indicating actions into use in the dobby or acquard and shuttle box op erating mechanisms, on which movements being effected the additional cam 72 will have moved sufliciently forward to strike the outer end of the lever m so that the motion transmitted thereto may be imparted through the rod m lever 41, shaft (Z lever (Z and rod' 0 to the hunter 6 to cause said hunter Z) to arrest the motions of the loom as before described. This arresting of the motion of the loom will be eflected at the time when the cam 71; has arrived with its point 8 approximately beneath the antifriction pulley so that on the arresting of the loom the weaver may repair or supply the broken or failing shot of weft and then re-start'the loom, on which the cam it will move forward sufliciently to permit the lever 70 to descend and effect the coupling up of the pick ing mechanism so that the ordinary operations of the loom may be carried out, and at this time the catch a? will have fallen into the path of motion of the clutch a so that it will cause it to oscillate upon its bracket and move clear of the projections 4; carried by the wheel thus after the complete cycle of actions described have been effected all of the parts are readjusted in their respective positions as illustrated, ready for having their actions restarted on the next indication by the weft detector mechanism.

Provided my invention has to be applied to looms which have to be actuated in a different manner to the type herein described, this may be carried out by altering the shape oractions of the cam 72, to give the resultsdesired; while when it is necessary to effect a stoppage of the take-up motion during the foregoing actions this may be effected by any of the well known devices, but since my invention is more especially applicable for use in looms wherein the takeup and let-off motions are reversed whenever a reversal in the direction of the pattern surface of the (lobby is effected, it will readily be understood how same may he applied.

Such being the nature and object of my said invention, what I claim is 1. An improvement in looms comprising a controlling rod, mechanism for automatically actuating said rod, a control member for said mechanism, means for actuating said control member to start said mechanism upon failure of a weft thread, means operated by said mechanism for imparting an additional movement to said control memher, and stop mechanism actuated by said additional movement.

2. An improvement in looms comprising a controlling rod, a normally stationary cam, a rotating element, a clutch for con necting. said cam with said rotating element, means operated by said cam for actuating said rod, a control member for said clutch, means for actuating said control member to operate the clutch upon failure of a weft thread, means operated by said cam for imparting an additional movement to said control member, and stop mechanism actuated by said additional movement.

3. An improvement in looms, comprising a controlling rod, a normally stationary cam, a rotating element provided with projections, a pivoted clutch lever carried by said cam and positioned to engage said pro jections, means actuated by said cam for operating said rod, a control member for said lever, means for imparting initial movement to said control member upon failure of a weft thread, means operated by said cam for imparting an additional movement to said control member, and stop mechanism controlled by said additional movement.

4. An improvement in looms comprising a controlling rod, mechanism for actuating said rod, a pivoted hunter controlling said mechanism, means for imparting an initial movement to said hunter to start said mechanism upon failure of a weft thread, means operated by said mechanism for imparting an additional movement to said hunter, and stop mechanism operated by said. additional movement.

5. An improvement in looms comprising a controlling rod, mechanism for actuating said rod, a movable hunter controlling said mechanism, means for imparting an initial movement to said hunter to start said mechanism upon failure of a weft thread, means for limiting said initial movement, means a; vu

operated by said mechanism for imparting means for imparting an initial movement to said hunter to start said mechanism upon failure of a weft thread, means operated by said mechanism to move the rod connected with said hunter, whereby an additional movement is imparted to the latter, and stop mechanism operated by said additional movement of the hunter.

7. An improvement in looms comprising a controlling rod, a normally stationary cam, a rotating element, a clutch for coupling said cam with said rotating element,

a stop member normally holding saidclutch member in inoperative position, a hunter, a rock shaft connected with said hunter, connections between said rock shaft and said stop member, means cooperating with said cam to actuate sai .1 rod, means operable upon failure of a weft thread for imparting movement to said hunter, means operated by said cam for imparting additional movement to said hunter, and stop mechanism operated by the additional movement of the hunter.

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

GEORGE WILSON SHACKLETON Witnesses I SAMUEL H Er, I-IUBERr' HEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

Images