US727533A - Let-off and take-up mechanism for looms. - Google Patents

Description

. No. 727,533. PATENTED" MAY-5, 190s.

, H. A. BOND. I LET-OFF AND TAKE-UP MECHANISM FOR LOOMS.

APPLIUATIQN EILED JAN. 16, 1902. K0 MODEL.

3 SHEETS-SHEET 1.

No. 727,533. I PATENTBD MAYS, 1903.

H. BOND. LET-OFF AND TAKE-UP MECHANISM FOR LOOMS.

APPLICATION F ILED JAN. 16, 1902.

N0 MODEL. 3 SHEETS-SHEETZ.

PATENTEDYMAY 51903.

. H. A. BONDJ LET-OPP AND TAKE-UP MECHANISM FOR LOOMS.

APPLICATION FILED JAN. 16, 1902.

s s'HBETs-BHBBT a.

r N0 MODEL.

Jun- I mime STATES Patented May 5, 1903.

ATENT OFFICE.

HIRAM A. BOND, OF \VEST SPRINGFIELD, MASSACHUSETTS, ASSIGNOR, BY IWIESNE ASSIGNMENTS, TO THE NATIONALLOOM AND WIRE COMPANY, INCORPORATED, OF SPRINGFIELD, MASSACHUSETTS, A CORPORATION OF CONNECTICUT.

LET-OFF AND TAKE-UP MECHANISM FOR LOOMS.

SPECIFICATION formingpart of Letters Patent 0. 727,533, dated May 5, 1903. Application filed January 16,1902. Serial No. 89,974. (No model.)

To all whom, it may concern.-

Be it known that I, HIRAM A. BOND, a citizen of the United States of America, and a resident of W'est Springfield, in the county of llampden and State of Massachusettsmave invented certain new and useful Improvements in Let-Off and Take-Up Mechanism for Looms, of which the following is a full, clear, and exact description.

This invention is for improvement in looms, and more particularly looms for the weaving of wire-cloth, such as extensively used in Fourdrinier papermachines and for other purposes.

The improvements specifically relate to the let-off and take-up mechanism.

An object of the invention. is to provide a new and improved mechanism controlling both the let-off and take-up concurrently which is very positive and reliable in its operation and which is susceptible by the substitution for one of the parts comprised therein of another part of slightly-changed size and character of varying the extent of let-off and take-up, whereby to accord with the dif ferenoes in the desired fineness or coarseness of the mesh of the wire-cloth to be woven in the loom.

Another object is to so form and combine the actuating mechanism for the let-off and the take-up that the warp-beam or the takeup roller, or both, may be rotated either independently of each other and of the operating mechanism or both concurrently with each other and still independently of and Without obstruction by the operating mechanism therefor.

Another object is to provide that in the building up of the roll of cloth as made on the take-up beam the increased size of the roll will not operate to strain the warps or interfere with the proper operation of the loom.

Another object of the invention is'to generally improve, simplify, and cheapen the construction of the loom and render the same capable of protracted use'withont liability of derangement.

To these ends the invention consists in the constructions and combination or arrangement of partsor instrumentalities, all substantially as hereinafter described, in conjunction with the accompanying drawings and as coveredin and by the claims.

In the drawings, Figure l is a side elevation of theloom equipped with the present improvements, a portion of the side frame being indicated as broken away for clearer illustration of some of the parts contributing to the novel mechanism. Fig. 2 is a.plan view of the 100m, anuprer portion of the framing being understood as carried away on a plane which is just above the level of the warp and take-up beams. Fig. 3 is a longitudinal sectional view through the take-up beam, showing its slipping connection 011 the warp-beam shaft. Fig. 4 is an end view and partial section of the warp-beam.

Similar characters'of reference indicate corresponding parts in all of the views.

In the drawings A represents the framing of the machine indicated as being of the same general design as commonly employed for wire looms.

B represents the warp-beam, having its arbor journaled horizontally in boxes to a at one end of theloom, and C is the take-up roll similarly horizontally mounted at the other end of the'loomJ D is the main or driving shaft.

Erepresents the lay, pivotally mounted and suspended, having the reed at its lower portion.

E represents the duplicated cam-lever, engaging the cams E in an ordinary manner, whereby the reciprocatory swinging motions are imparted to the said levers E E and from them through the connecting-bar d to the lay. V V

F F-represent the harnesses, arranged for alternately rising and lowering motions as imparted to them by the levers E E interm ediately pivotally mounted and actuated by the cam-rollers e c on theregularly-rotating and prope'rly-speeded shaft A in the loom.

Both the extended end portions of the shafts or arbors of the warp-beam B and the takeup roll C have detachably aflixed thereon by of said driving-shaft.

the set-screws ff the worm-wheels G and H, meshing in which are the worms g and h, which are carried, preferably detachably, at the opposite ends of the long shaft J, which ranges nearly horizontally along the outer side of the machine-frame, one of the worms having its gearing engagement with the worm-wheel G beneath the latter, while the other has its engagement with the wormwheel H above the latter, so thatthe rotation of the shaft J'will cause rotational movement of the let-off warp-beam and the take up roll in the same direction as manifestly requisite.

There is comprised between the drivingshaft A and the shaft J, having in common driving connection with both the warp-beam and the take-up roller, a medium of speedreducing connection, which comprises there in means or provision whereby the degree of reduction of the speed and consequent extent of movement in each operation of the loom may be varied in percentage or proportion.

While the speed-reducing and variable connection may be somewhat modified from that here shown without departing from this invention, I will particularly describe the one shown.

The shaft A by gearing is rotated from driving-shaft A once in every two rotations Suitably adjacent the said shaft A is a short shaft 70, parallel therewith, having removably mounted thereon a ratchet-wheel m, with which coacts a pawl n, carried atvthe extremity of a pawlcarrying lever 0, one end portion of which is hung for a swinging motion on the same shaft .70 as that on which the said ratchet-wheel is removably affixed. The swinging reciprocatory motion of the pawl-carrying lever ovis imparted by the swinging lever Z, which byalink Z is connected to the pawl-carrying lever. 0, and the reciprocatory motions of this lever Z are imparted thereto in the one direction by the adjustable cams Z which are carried by the disk or rotary holder Z and which cams i'mpinge against the lever Z one thereof at every half-rotation of shaft A which corresponds toacomplete rotation of the main shaft and to complete operations of the harnesses and lay. The spring Z retracts the lever Z in pawlcarrier 0. The adjustable cams Z are fitted in radial grooves in the disk Z being secured with greater or less radial extension by means of the bolt and slot connections indicated in Fig. 1. On the shaft is is a small spur gear-wheel 15, which meshes into the larger gear-wheel 16 on a shaft 19, which is parallel with the one 70, said shaft 19 having also thereon a spur gear-wheel 17, which is smaller than the one 16 and in turn meshing into the larger spur gear-wheel 18 on the horizontal shaft q, which is parallel with shafts p and k. The said shaft g has on its end outside of the frame the bevel-gear 19, of comparatively small diameter, which meshes with the larger bevel gear-wheel 20, affixed on the longitudinally-extending worm-shaft J, having wormgearing connection, as aforementioned, with the warp-beam and take-up roll. The said shafts 70, p, and q have journal-bearings at their one end in .1 he member 0 of a frame L, of a form to embrace three sides of a rectangle and which is bolted to the inner side of the said framing A of the machine, and the gearing 15, 16, 17, and 18 is inclosed within this frame or'rigid'metal strap, and the other ends of the said shafts k 19 q are journaled in the adjacent portion of the side frame A. The motion primarily imparted to the main shaft will, through the connections comprising the reducing-gearing, the ratchet-wheel, and the ratchet-wheel-actuating mechanism, impart a very slow rotational motion to the warpbeam and the take-up roll proportionately more or less, according to the length of the teeth on the ratchet-wheel or the length of thrust of the pawl, and for establishing the conditions for let-0H and take-up where the loom is being employed for a finer or a,

coarser wire fabric the ratchet-wheel may be substituted by another having correspondingly finer or coarser teeth, and the actuating connections of the pawl-carrier will be correspondingly adjusted for the pawl to have its proper throw to carry around the ratchetwheel an extent equal to one of its teeth ora multiple thereof. By disconnecting the wormgearing G g or H h either by removing or displacing the worms or the worm-wheels the warp-beam and the take-up roll are left free for independent rotations to enable beaming on new warp-wires or the taking ofi of the finished fabric.

The take-up beam 0, as shown in Fig. 3, is mounted loosely on its shaft or arbor H and the beam has at one end a flanged or cupshaped shell 25, within the inner surface of which are arc-shaped friction-shoes u, having central radial perforations a and a collar v is affixed on the adjacent end portion of the take-up-beam shaft, the same having its radial studs 0 extended for a sliding fit Within the perforations of the friction-shoes. The said radial studs are screw-threaded, as shown at o ,within their extremities, receiving thereon the nuts '0 which constitute adjustable stops or shoulders for the spiral springs w, which are between such stops and the shoes encircling the studs. By changing the position of the nuts the shoes may grip the beam to its shaft with a greater or less forcible degree of yielding engagement, and hence the diameter of the take-up beam and the woven cloth thereon becoming constantly variable in the progress of the operation of the loom is compensated for by the yielding of the beam on its shaft when the predetermined maximum of strain on the warps shall have been reached.

Having thus described my invention, what I claim, and desire to secure by Letters Pat out, is-

1. In a'let-oif and take-up mechanism for looms, in combination, the warp-beam and the take-up beam having worm-wheels on their shafts, and a shaft extending from adjacent the shaft of the one to adjacent the shaft of the other, and having Worms gearing with said worm-wheels of said shafts, a drivingshaft and a secondary shaft having a ratchetwheel thereon, a pawl-carrying arm pivotally hung having a pawl coacting with said ratchetwheel, reducing-gearing connected with and between the ratchet shaft and the wormshaft, a rotary disk, primarilydriven from the main shaft, having one or more radially-ad justable cams, a lever linked to the pawl-carrying arm, with which said cams engage, and means for retracting the lever.

2. In a let-off and take-up mechanism for looms, the combination with the Warp-beam and the take-up beam, having worm-wheels on their shafts, and a shaft extending from adjacent the shaft of the one beam to adjacent the shaft of the other, having worms in gear with the worm-wheels on the beam-shaft, and a driving-shaft, of a shaft 7c having a ratchetwheel thereon, and a pinion-wheel15, further shafts p and (1 having speed-reducing gearing and the latter one of the series having an extension adjacent the worm-shaft, and provided with a bevel gear-wheel 19 in mesh with a gear-wheel 20, which is affixed to the Wormshaft, the pawl-carrier 0 and pawl n engaging 1 the ratchet-wheel, a shaft in driving connection with the main shaft having the disk Z provided-with the radially-adjustable cam and a lever Z linked to the pawl-carrier, and located to be impinged against by said cams, to be operated thereby and the retractingspring Z substantially as described.

3. In a device of the character described, the combination of a take-up beam, a shaft on which the beam is loosely mounted, the beam havinga cup-shaped end,shoes arranged to rotate with the shaft, and springs arranged to press the shoes against the inner periphery of the cup-shaped end.

4. In a device of the character described, the combination of a take-up beam, a shaft on which the beam is loosely mounted, the beam having a cup-shaped end, a collar secured on said shaft and having radial studs, nuts engaging said studs, friction-shoes having apertures engaging the said studs, and spiral springs encircling the studs and hearing on the nuts and the shoes, and arranged to force the shoes against the inner periphery of the cup-shaped end.

Signed by me at Springfield, Massachusetts, this 11th day of January, 1902.

HIRAM A. BOND.

Witnesses:

O. S. GREENLEAF, WM. S. BELLOWS.

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