US440476A - Art of manufacturing bands for spinning and twisting machines and machine therefor - Google Patents

Description

(No Model.)

- H. G. HALL. ART OF MANUFACTURING BANDS FOR SPINNING AND TWISTING MACHINES AND MACHINE THEREFOR.

No. 440,476. Pat nted Nov. 11,1890.

H \g S II II i 'Sx W W/TNESSES:

UNITED STATES PATENT ()EFIcE.

HENRY G. I-lALL, OF SHELBY, NORTH CAROLINA.

ART OF MANUFACTURING BANDS FOR SPlNNlNG AND TWISTING MACHINES AND MACHINE THEREFOR.

SPECIFICATION forming part of Letters Patent No. 440,476, dated November 11, 1890.

Application filed January 10,1890. Serial No. 336,544. (No model.)

To aZZ whom it may concern.-

Be it known that I, HENRY G. HALL, of Shelby, in the county of Cleveland and State of North Carolina, have invented a new and useful Improvement in the Art of Manufacturing Bands for Spinning and Twisting Machines and Machines Therefor, of which the following is a full, clear, and exact description.

Heretofore in the manufacture of bands such as are used for driving spindles of spinning and twisting frames-the same have been made in what are called loop-bandiug machines, in which two live-spindles and one sliding dead-spindle are used, each provided with a hook for carrying the cord or strands of which the band is composed. The two hooked live-spindles are arranged at one end of the machine and the sliding hooked deadspindle at or near the other end thereof. One end of what may be termed the cord, but which consists of continuous loose strands, is tied at its one end onto the hook of the one live-spindle. Then said cord is passed around the hook of the dead-spindle and returned or brought back and secured at its other end to the hook of the other livespindle. The live-spindles are then rotated to put the twistinto the strands, which, by shortening the cord, causes the dead-spindle that is held back by a weight to slide forward its extreme limit. The machine is then stopped and the one end of the cord lifted from off the one live-spindle and transferred to the other live-spindle, which continues to carry the opposite end of the cord, and which is then revolved in an opposite direction to that in which it previously moved for the purpose of twisting the two lines of cord together to form the band. This at first causes the band to lengthen by reason of the reverse twist first given to the strands, the dead-spindle then sliding back a given distance; but as the two lengths of cord are continued to be twisted together the band begins to shorten, the deadspindle sliding forward again a certain distance with or as drawn by the band. The

band is then removed from the machine and thrown across a frame, when all the twist which was given it as it shortened and the dead-spindle moved forward ,as last described,

runs out or is lost. A band thus made lacks in both durability and efficiency, owing to its not being stretched and its liability when in use to slacken, thereby causing much waste. All this I obviate by treating the band as a belt and stretching it after it has shortened by the twisting of the two lengths of cord together until a large amount of extra twist has been put in and afterward subjectingit while so stretched to tension for a sufficient length of time for the final twist to become set. A band thus made will be thoroughly stretched before it is applied to its work, will not be liable to slacken when in use, thus preventing soft bobbins, and will largely exceed in durability bands as ordinarily made.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a plan of a band making or twisting and stretching machine enibodying my invent-ion. Fig. 2 is a side elevation of the same. Fig. is a further side elevation, in part, showing the dead-spindle in position when forced back. Fig. 4 is a transverse section upon the irregular line 0000 in Fig. 3. Fig. 5 is a plan view of the hook end of the dead-spindle; and Fig. 6 is a longitudinal sectional view of a screw-adjusting means used 011 the holder, which keeps the band at its stretch until the final twist put in the band has become set.

A is the dead-spindle, having a hook I) on its forward end and fitted to slide back and forth through standards 0 c, mounted on the bed B of the main frame.

0 O are the hooked live-spindles, fitted to rotate in bearings d at the opposite end of the bed, and which may be driven bya band (not shown) passing over a pulley e and-whirls f f. This, together with the attachment of a cord 9 to the rear end of the dead-spindle and passing over a. pulley h on the main frame, and having a weight 1' attached to it to draw the dead-spindle back, is or may be the same as in the ordinary loop-banding machines hereinbefore referred to. The hook I) on the deadspindle, however, is grooved at its forward end, as at k, for a purpose that will be hereinafter described. A dog Z is secured to the deadspindle, the uses of which will also be hereinafter explained.

The operation up to a certain point is the same as that of an ordinary loop-banding ma chine. Thus the doubled line of strands, yarns, or rovings, or what has been termed the cord, as shown in Fig. 1, is first passed round the hook I) on the dead-spindle and its two ends fastened, respectively, to the hooks of the live-spindle O C, and the latter rotated to put the twistinto the strands, which shortens the cord and causes the dead-spindle A to move forward to its extreme limit, as shown in Fig. 1. The machine being stopped, one end of the cord is removed from the onelive-spindie 0 and hitched-onto the other livespindle C, which then carries both ends of the cord, after which said live-spindle is revolved in an opposite direction for the. purpose of twisting the two lines of cord together to form the band D, and which first causes said band to lengthen and the dead-spindle A to move a given distance back, and so that the dog Z will travel from its extreme forward position (shown in Fig. 1) to the position shown for it by dotted lines in Fig. 2, after which the band, continuing to twist, shortens, causing the dead-spindle to be moved forward until its dog Z assumes the position shown for it by full lines in Fig.2. This operation having been .completed, the novel feature of my invention now begins. Thus, instead of taking oif the band when the dog Z reacts or reaches in the shortening of the band the position shown forit by full lines in Fig. 2, and when the band has heretofore been called finished, I force said dog and dead-spindle on which it is adjustably held by a set-screw Z", to suit different lengths of band,back, more or less, say to the extreme length of its backward movement, as shown by full lines in Fig. 3, or even less, and thereby stretch said band. In this stretched conditionI remove the band to a tension-holder, and keep it there until the final twist hasbecome set, and thereby increase its usefulness and very largely so its durability, and make it so that it will not be liable to get slack or stretch when in use, thus avoiding the many evils consequent thereon. The means shown for doing this consists, in the first place, ofa hand-lever E, which as it is moved in direction of the arrow 3 moves the dog Z, with its attached dead-spindle, back from the position shown by full lines in Fig. 2, to the position, say, shown for it inv Fig. 3, said lever-E thus moving said dog by means of a connecting-rod m, attached to a crank m on its rock-shaft and at its other end to a crank nvupon'a rock-shaft 0, that carries an arm 1', provided with a roller, which bears against the dog Z. This stretches the band, as described, and partly sets the twist; but before thus stretching the band I first remove by hand the one-looped end of it from the live-spindle O, on which it is secured, and engage said end with a toothed disk G on a tension-holder H, and then move the dog Z back to give the stretch, as described, until the hook I) on the dead-spindle just passes overa second toothed disk G, which is then moved up to cause a tooth on it to pass up the groove 7a in the hook I) and to engage with the loop on the end of the band on said hook and to lift such end of the band from the hook b, after which said disk G is lowered again to its normal position and the stretched band is allowed to remain on the disks G G some few hours, more or less, until the extra twist given to it is fully set.

The holder H consists, mainly, of a length of gas pipe or tube a, resting in an open bearin g b at each end, and the toothed disks G G, carried by said tube. These disks are adjustable on or along said tube to suit different lengths of band by fitting them to slide thereon. and adjusting and holding them in position when adjusted by means of screw bolts 0 within each end of the tubea, provided with keys d at their forward ends, arranged to pass through slots 6 in the tube and bearing against the hubs of the disks, and nuts f, fitting the screw-threads on the back or outer ends of the bolts 0.

The end of the tube a, carrying the disk G, is raised to cause the said disk to lift the band from the hook I) of the dead-spindle, as hereinbefore described, by suitably pressing on a lever I, which may be operated by the knee and is arranged to bear on the under side of that end of the tube a which carries the disk G, thus raising said end of the tube and disk G along with it, as required. By screwing up the nuts f they will also stretch the band if put on too slack, and the disks G G have their teeth so closely arranged around their perimeters that they will serve to hold a large number of bands under stretch at the same time. The same band-holder H' may also be used for stretching mule-spindle bands, one end of which may be fastened to atooth and the cord or band woven backward and forward on the disks, after-which the nuts f may be screwed up, thereby giving a powerful stretch to the band and dispensing with the appliances now used. in cotton and woolen mills for taking up the slack of mule-banding.

It should here be observed that the pith of the invention, as here described, consists in holding the baud stretched after it has been fully twisteduntil the finaltwist put therein in the operation of twisting, and during which the band is shortened, has become set,.irrespective of the means by which this is doneas, for instance, Whether bya separate holder or otherwise, or, if desired, by transferring the stretched band to the spindle direct it is designed to drive.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The method hereindescribed of making cord-like bands suitable for spinning and twisting machines,which consists in first twisting the yarns or rovings together in independent cord-like lengths, then twisting in a reverse direction said cord-like lengths about each other, and then after the final twist has been put in the band, as described, forcibly stretching said band and holding it under tension till the final twist has been set, substantially as specified.

2. In machines for making cord-like bands for spinning and twisting machines, the com bination, with the rotating live-spindles and with the sliding dead-spindle thereof, of means adapted to stretch the band after the two cord-like lengths of it have been twisted together in a reverse direction to that in which said lengths were independently twisted, substantially as herein set forth.

3. In a machine for making and stretching bands of the character herein described, the combination, with the two live-spindles O and opposite sliding dead-spindle A, of the dog Z on said dead-spindle and a hand-lever mechanism adapted to force said dog and dead,- spindle back, essentially as and for thepurposes herein set forth.

4. In a machine for making and stretching bands of the character herein described, the combination, with the two live-spindles, the sliding dead-spindle of the machine, and a hand mechanism adapted to force said deadspindle back and to stretch the twisted band, of a separate holder adapted to receive the twisted and stretched band and to hold it under tension, substantially as specified.

5. In a machine for making and stretching bands of the character herein described, the holder 11, provided with two opposite end disks G G, having teeth on their perimeters,

6. In a machine of the character herein described, the combination, with the hook h on the sliding dead-spindle A, provided with a groove 70 on its exterior, of the holder H, having toothed disks G G and supported so as to be capable of being raised, and means for raising the same and adapted to project a tooth of one of said disks up through or within the groove k in the hook 19, substantially as and for the purpose herein specified.

7. In a machine for making and stretching bands of the character herein described, the combination, with the sliding dead-spindle A, live-spindles O C, and with a hand mechanism adapted to force said dead-spindle back and to stretch the band after it. has been twisted, of the band-holder H, provided with toothed disks G G, near its opposite ends made adjustable toward or from each other, essentially as and for the purposes herein set forth.

8. In a machine of the character herein described, the band-holder H, consisting of a tubular spindle at, having longitudinal slots 6 6' near its opposite ends, the adjustable toothed disks G G, the screws or screw-bolts c', havin g keys d, arranged topass out through said slots, and the nuts f on the outer ends of said bolts, substantially as specified.

HENRY G. HALL.

Witnesses:

O. 1?. ROBERT, R. L. SIMMONS.

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