US913969A - Take-up mechanism for looms. - Google Patents

Description

UNITED STATES PATENT OFFICE. JAMES OSULLIVAN, OF BIDDEFORD, MAINE, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE,

' MASSACHUSETTS, A CORPORATION OF MAINE.

TAKE-UP MECHANISM FOR LOOMS.

Specification of Letters Patent. Application filed May 9, 1908. Serial No. 431,910.

No. 913,969. Patented March 2, 1909.

T 0 all whom it may concern:

Be it known that 1, JAMES OSULLIVAN, a citizen of the United States, and resident of Biddeford, county of York, State of Maine, have invented an Improvement in Take-Up Mechanism for Looms, of which the followingdescription, in connection with the accompanying drawing, is a specification, like I numerals on the drawing representing like parts. i

This invention has for its object the production of novel take-up mechanism for looms having such a construction and arrangement of its operative parts that when the operation of the take-up is arrested automatically let-back is permitted, means being provided whereby the take-up can be freed manually from the control of its actuating and let-back devices, to permit ready movement of the cloth in either direction.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a front elevation of a suflicient portion of a loom to be understood, with my novel take-up mechanism applied thereto;

the gearing 7, 8 and 5 in Fig. 2, a portion of the latter gear only being indicated by dotted lines.

The actuating device is shown as a pawl 16 cooperating with the ratchet and pivoted at 17, Fig. 2, on a pawl-carrier 18 fulcrunied on the stud 12, the pawl having a rigidly con-- nected segmental extension 19 carried upward and rearward above and at one side of the ratchet 15, as shown. A spring 20, Fi 2, interposed between the end of the paw carrier 18 and the tail of the pawl 16 normally acts to press the pawl into operative engagement with the ratchet. A lateral pin 21 on the free end of the extension 19 enters a slot 22 in a link 23, best shown in Fig. 2, pived arm 24 fast on a rock-shaft 25, which is adapted to be turned when the upturned arm 26 fast thereon, see Fig. 1, is swung outward, as by the outward movement of the usual filling-fork slide when filling fails. Said rockshaft 25 may be arranged to effect the operation automatically of filling-replenishing mechanism, as in the loom shown in United States Patent No. 529940, granted November 27, 1894 to Northrop.

Fig. 2 is a left hand side elevation thereof, When the rock-shaft 25 is turned the link the nearer loom-side being broken out to 23 is raised and the elevation of the extenshow arts of the mechanism beyond it. sion 19 disengages the actuating pawl 16 Re erring to the drawings, the usual takeup or sand-roll 1 has one of its journals 2 extended toward the loom-side 3 and is provided with an attached gear 4 in mesh with a large gear 5 rotatably mounted on a stud 6, Fig. 1, extended inward from the loom-side. The gear 5 meshes in turn with a pinion 7 secured to or forming part of a gear 8, said pinion and gear being mounted on the late 9 bolted to the loom-side and constituting the usual change-gear, socalled, the gear 8 meshing with a pinion 10, see Fig. 2, fast on the hub of a large bevel-gear 11 rotatably I mounted on a fixed stud 12 carried by the cloth-roll guide 13, the cloth-roll 14 being partly shown in Fig. 1 and in dotted lines Fig. 2. Rotatable with the bevel-gear 11 is the ring-like take-up ratchet 15 which herein is rotated step by step by a suitable actuating device, to be described, the train of gearing previously described transmitting the rotatixlrle movement of the ratchet to the take-up l In order to avoid confusion I have omitted l from the ratchet, arresting take-upand letting back, as will be explained.

A bifurcated detent-pawl 27 rocking on a fixed pivot 28 normally engages the ratchet 15, as shown in Fig. 2, to prevent retrograde movement thereof, a shelf-like projection 29 extending laterally from the inner side of the detent-pawl, above an adjustable bunter 30 set into the extension 19 adjacent a shoulder 31 thereon. 'Between the separated sides of the pawl 27 is set a let-back awl 32, longitudinally slotted to embrace tie pivot stud 28 and slide thereon, the extent of such sliding movement being limited by a set-screw 33 on the pawl, as is common in let-back pawls.

lVhen the rocking of shaft 25 lifts the extension 19 to disengage the actuating pawl 16 from the ratchet 15 the hunter 30 engages the shelf 29 and thereby lifts the toe of the detent-pawl 27 from the ratchet, and the letback pawl 32 permits the ratchet to turn back one tooth, two teeth or more, as desired, the parts returning to normal operative position when the shaft 25 resumes its noroted at its upper end to a rearwardly extendmal position. Thus when a filling failure occurs the take-up is arrested automatically and a predetermined let-back permitted.

It is sometimes desirable or necessary for the weaver to turn the take-up roll forward or back, and of course when it is to be turned back the actuating and other pawls must be disengaged from the ratchet. Herein I have provided simple manually operated means to effect this disengagement when desired, and to that end I have pivotally mounted upon the shaft 25 a hub 34 having an upturned handle 35 and a depending extension 36 bent rearward at its lower end and terminating in a laterally elongated foot 37 which extends beneath the pawls 27 and 32 and normally is just in front of the shoulder or abutment 31.

l/l nen it is desired to operate the take-up by hand the weaver pulls the handle 35 forward, thereby moving the foot 37 rearward and upward, first against the abutment 31 to act upon the extension 19 and move it rearward, the link 23 acting on the rear end of the extension to swing it upward on its pivot 17, disengaging the pawl 16 from the ratchet 15, the pawl 16 remaining in engagement with the ratchet until the rearward movement of the extension 19 and its upward swing will disengage the pawl. As the foot continues its movement the bunter 30 engages the shelf 29, disengaging the detent pawl 27 and said foot then acts upon and lifts the letback pawl 32 from the ratchet, so that the latter is thereby freed from the control of all three pawls. Of course the movement of the extension 19 swings the pawl-carrier 18 about its fulcrum, as will be perfectly clear, the slot and pin connection between the extension 19 and the link 23 giving sufficient freedom of movement to prevent any turning of the arm 24 or the rocleshaft 25.

When the take-up is released as described it is conveniently turned in either direction by means of a bevel pinion 38 in mesh with the gear 11 and fast on a short shaft rotatably mounted in a bracket 39 on the loomside, the front end of the shaft being shaped at 40 to receive the socketed hub of a suitable detachable handle 41, shown in dotted lines Figs. 1 and 2. The weaver can manipulate the handle 41 with one hand while with the other hand he keeps the releasing handle 35 drawn forward.

I have herein shown the pawl-carrier 18 provided with a depending ear 42 carrying a laterally-extended roll 43, best shown in Fig. 1, adapted to cooperate with an oppositely beveled cam 44 fast on a vibrating bar 45 slidable in a guide 46 on the cloth-roll guide or stand 13. Said bar is vibrated in any suitable manner, cam 47, Fig. 2, on the cam-shaft 48 of the loom, the reciprocation of said bar acting to lift the roll 43 on each stroke to thereby effect the feed movement of the pawl-carrier 18.

as by cooperation with a As thebeveled cam 44 is double the pawlcarrier is operated at each beat of the lay to effect the advance of the take-up mechani ism. A handle 49 on the ear 42 enables the weaver to move the actuating pawl by hand if necessary, to tighten up the cloth or for any other reason.

Modifications in details of operation and arrangement may be made by those skilled in the art without departing from the spirit and scope of my invention as set forth in the annexed claims.

Having fully described my invention,what I claim as new and desire to secure by Letters Patent is 1. Take-up mechanism for looms, including takeup and let-back pawls, a swinging carrier for the takeup pawl, automatic means to act upon the said pawl-carrier and arrest the operation of the take-up pawl and permit the let-back pawl to operate, and manually operated means movable at will into independent engagement with and to move the pawl-carrier and to also directly engage the let-back pawl, to simultaneously render inoperative the take-up and let-back pawls, whereby the take-up mechanism is free to be moved in either direction.

2. In take-up mechanism for looms, a rotatable ratchet, an actuating pawl normally cooperating therewith, a pawl-carrier fulcrumed co-axially with the ratchet, a roll on the pawlcarrier, and a reciprocating member having a cam to cooperate directly with the roll and effect intermittent feed movement of the pawl-carrier.

tatable ratchet, an actuating pawl normally cooperating therewith, a swinging pawlcarrier having a fixed fulcrum, and a reciprocating and oppositely beveled cam to cooperate with and effect feed movement of the pawl-carrier on each stroke of the cam.

4. In take-up mechanism for looms, a rotatable ratchet, an actuating pawl normally cooperating therewith, a pawl-carrier, means to intermittingly move it to effect feed of the pawl, detent and let-back pawls to with the ratchet, and means to automatically disengage the actuating and detent pawls from the ratchet and effect arrest of the ratchet, said means including a projection on the detent pawl and a bunter connected with the actuating pawl, said bunter engaging the projection and disengaging the detent pawl when the actuating awl is disengaged from the ratchet, the letack pawl permitting a predetermined retrograde movement of the ratchet.

5. In take-up mechanism for looms, arotatable ratchet, an actuating pawl normally cooperating therewith, a swinging pawl-carrier on which said pawl is pivotally mounted, an extension on the pawl, detent and letback pawls to cooperate with the ratchet, the

3. In take-up mechanism for looms, a ro' cooperate detent awl having a lateral projection, an adjustahle bunter on the extension of the actuating pawl, and automatic means to lift the extension and disengage the actuating pawl and the ratchet, the hunter at such time engaging the lateral projection on and lifting the detent pawl from the ratchet, permitting control thereof by the let-back pawl.

6. In take-up mechanism for looms, a rotatable ratchet, an actuating pawl normally cooperating therewith, a swinging pawl-carrier on which said pawl is pivotally mounted, an extension on the pawl, detent and letback pawls to cooperate with the ratchet, the detent and having a lateral projection, an adjustab e bunter on the extension of the actuating pawl, and automatic means to lift the extension and disengage the actuating pawl and the ratchet, the hunter at such time engaging the lateral projection on and lifting the detent pawl from the ratchet, permitting control thereof by the let-back pawl, combined with manually operated means to engage and lift the extension and its bunter, to disengage the actuating and detent pawls from the ratchet, said means including a foot to engage and move the let-back pawl from the ratchet.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES OSULLIVAN.

l/Vitnesses CARLOS O. HEARD, WILLIAM E. SHAW.

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