USRE7784E - Improvement in looms - Google Patents

Description

5 Sheets-Sheet Z; L. J. KNOWLES.

LOOM.

" Reissued July 3, 1877.

Im/ENTD Sheets- 1 KNOWLES.

LOOM. V

Reissued July 3, 1877 WM E55 5 a '5Sheets-Sheet 5. L. J. KNOWLES.

' LOOM. I No. 7,784.. Reissued July 3,1877,

W ITN EEI EI; INVENTUF'V To an who'nu't may concern:

UNITED. STATES,

PATENT GFFICE.

LUOIUS J. KNOWLES, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT m Looms.

. specification forming part of Letters Patent No. 134,992, dated January 21, 1.873; Reissue No. 7,784, dated July 3, 1877; application filed May 17, 1877.

Division A.

Be it known that I, LUCIUS J. KNOWLES, of the city and county of Worcester and Com monwealth of Massachusetts, have invented certain new and useful Improvements in Looms;

and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, which form a part of this specification,

and in which- 7 Figure 1 represents a front-side view of my improved loom. Fig. 2 represents a backside -view of the loom. Fig. 3 represents an end of the loom, upon which the harness mechanism is mounted. Fig. 4 represents a top or plan view. Fig. 5 represents views of detached parts of the harnessoperating mechanism.

Fig. 6 represents a side view of the elevatingplate, by means of which all of the heddles are thrown into one shed, for the purpose hereinafter described. Fig. 7 represents sectional views of the lever-holding device, as hereinafter described; and Fig. 8 represents a side 'ew of the levers for operating the shuttleboxes.'

Toenable those skilled in the art to-which my invention belongs to make and use the same, I will proceed to describe it more in de The nature of that part of my said improvements or invention which forms the sub ect matter of this division of reissue relates to certainnew combinations of devices and mechanical structure, as will be hereinafter more fully-described and then specifically claimed.

us that it is necessary to move.

of said lever extends through to the-front of the loom, and 'is arranged within easy reach of the operator. When, therefore, the operator desires to turn the harness mechanism, as

before stated, the front end of lever A is depressed antl clutch-hub A elevated so that it will be disconnected from the clutch-hub upon 'the driving'gear below it. Lever A may be held down by any suitable catch. The oper ator can now turn the harness mechanism by means of power applied to any suitable part thereof,and that, too,withourtur1iing the mechanism that operates the lay of the loom/ For the purpose of mending threads, picking out imperfect work, and for other reasons, it is very desirable to bring all the heddles, and thereby all the threads, together into one line or plane. This result is produced in my improved loom by a very simple and eli'ective I device, as follows: The free ends of the vibrating levers B rest upon the elevating bar or plate B, Figs. 5 and 6, which is provided with two slots, b b, the lower ends of, the slots being horizontal, all as fully shown in Fig. 6.

When the operator-desires to bring all of the heddles intoone line, handle I is grasped and plate B is drawn forward, when the said plate, together with the free ends of levers B, will be raised until the horizontal parts of slots 1) I) rest upon the stationary guide screws or pins,

*whieh pass through said slots and are fast in the stationary comb B, in which the front ends of levers B work. When in this position plate B' will remain until pushed back, thus holding all of the vibrating levers clear of the pattern-wheel B, or pattern-chain, when one is used. As a result of this change of the parts, the harness-elevating cogged wheel 0 will bring the upper ends of all the angle'levers C forward, where they will remain, all the heddles being raised to the highest point in line with-each other. When the weaving'is to be renewed the operator pushes plate B back to its original place, and the pattern wheel or chain acts again.

It will be understood that by changing the mechanism the line at which meet maybe varied. l

The operator often has occasion or desires to move the pattern-chain, and should! the change be made when the harness-motionisin.

operation at certain stages, then a serious deheddlesshall rangement of the parts would result, as will be understood by those skilled in the art. To guard against such improper movement of the pattern chain or wheel a safety locking device is employed.

A shaft, 0, is fitted to turn in suitable bearings in the elevated part 1)" of the loom-frame D, and has attached to its outer end a bent arm, 0, which isacted upon by -a cam, d, upon the outer end of the shaft'pf the harness-depressing cogged wheel E, so as to permit thenpper hooked end d of the arm 0, fastened to shaft 0, to swing forward over the ends of all the vibrating levers B that are to remain down during the pick for the shed which has been.

set; c'on sequently the operator cannot turn the pattern chain or wheel until the hooked end (1'' of arm 0 has been turned back by the cam, as shown in the drawing.

When several levers are to be attached to a common fulcrum or spindle, it is quite con.- venient to have some arrangement whereby each or all of the leverscan be removed from their fulcrums for repairs or for other purposes.

My improvementfor accom plishin g this pan 1 made to conform to the circular ends of thevibrating levers B which it is designed to keep in place, while its ears stand between the ends of the outer levers and the ends of the lever supporting frame F, whereby the ends of said frame can be screwed or clamped against the ears and ends of the lever-cap E by means of put 0' when the cap has been once adjusted, and thus hold it i-n place without binding the ends of theflevers: The ends of the levers are slotted out upon their under sides, so that they can be dropped down upon the fulcrum-rod, as indicated in Fig. 5, after which the cap E is turned up over'their ends, as shownin the same figure.

If it is desired to w-ithdrawmr'take out any one or'all of.levers B, the operator simply the rear end of the levers can be lifted 0d of the fulcrum od. This, it will be noticed, is a good and useful improvement for holding a seriesof ers in place, and which is susceploosens npt, and turnsscap ,E back, when tible of s: naive use.

In the construction of mechanism for opersting movable shuttle-boxes much time and money have been spent, and yet this part of a loom'is regarded by manufacturers as far from-what it ought to be, and I have been led, framthe1n'actical difflculties which I have met with as a manufacturer of 1001115, to combine certain elements heretofore used by me separatelyin difierent looms in the loom shown in the drawing bnt'under difl'erent combinafi m l depressor wheels was inconvenient for certa n tions and arrangements, whereby substantial and important advantages are obtained, and

the loom rendered far more desirable and useful. The shuttle-box motion is obtained in this loom by a compound lever, G, Figs. 2 and 8,'the longer part G of the lever being' hinged or fulcrumed to the lower .end at. the other part, G, at m, (see dotted lines,) while the lat ter is fulcrtuned at a. both of said levers are operated by means of connecting-arms p from separate gear-cranks E, Fig. 8, connected with the inner ends of two of the vibrating levers B. By this am rangeine'n't a-four-motion shuttle-box can be very successfully operated. For instance, the

lower end of the compound lever G being 1 connected with the shuttle-box frame by cords i, or in any other convenient or well-known manner, one of the boxes being in place, the

loom is started, when, after the first box has been used, lever part G" is drawn forward, when the lower end of lever part G will be thrown baclr and the second shuttle-box raised .into position; then the upper end of lever part G is drawn forward, thereby throwing its lower end still farther back; but while this is being done the upper end of lever part G" is thrown back, thus discountingone, as it is called-that is,' permits only one box, thv

third being raised into position-whereas the sweep of lever part G would have been suffieient to have raised the fourth box int-oplace but for the back motion of lever part G".- The fourth box is now raised into position by the upper end of lever part G being drawn forward. It will thus be seen that with two com pound levers, G, connected to crank-gears H .and vibrating leversB, a four-motion shuttle-box. can be operated in a very'perfect man ner, and thus theelemients patented to me February. 24, 1863, have been combined with those described in the patent granted to me December 13, 1870, in a novel and useful mam ner.

The pattern-wheel B is driven from a gear on the end of the shaft of the depressi wheel E taking into gear K, loose on shaft of the patternwheel, but having countersinks 2, into which springs a catch-bolt in the end of arm L, fast to the end of shaft I. By this arrangement the pattern wheel or chain can be moved without moving the harness-motion, since by withdrawing the spring-bolt on the arm. L it, together with the pattern-wheel,

be revolved without turningguilrliK.

Those skilled in the art will appreciatethli improvement, since they will see that-this f pattern chain or wheel can be adjusted madily. 1 In the operation of the loom patented to-me February 24,1863, there have been found several practical objections when used in certain kinds of v weaving.

In the first iplaca'the arrangement or the crank-wheels, and lifter and The upper ends of sending for the right one.

Fig. 5,

classes. of work. .-Then, again, to obtain the necessary variation in theelevation or de pression of the several lines of heddles, the connecting-arms had to be connected to'the gear-cranks in different positions, and, conse' qnently, they had to be all marked or numbored, and each crank and its particular arm had to be placed in a particular position in the loom. This led to a great deal of trouble, since, if the crank-pin happened to be a little out of place, there was trouble; then, when one broke, mistakes were made in selecting or These difiicnltics, and others'which might be named, have been overcome by my present improvement-s, since I" have connected with the loom-frame D an elevated l'rame, D, of such construction that the harness and shuttle-box motions, or mechanism for producing suchmotions, can be located above one end of the looms, and yet.

within reach of the operator. The gear-cranks,

lifting and depressing wheels, occupy horizontal positions, and such, too, that anglelcvers U can be combined therewith, whereby all the gear-cranks and theirconnections can be made alike, the difl'erence in positions of the various series of heddles being obtained by means of notches in the angle-levers, and into which notches cords or chains are to be hitchedfor the purpose of giving. motionto' the heddles or harnesses, with which they are connected, in the usual manner.

The under sides of the vibrating levers B, are made with curved or circular recesses 1, for the purpose of allowing the pattern-wheel B, after its points or fingers 3 have raised the levers B to the proper height, to continue to move without, lowering them, so that they may remain in position until their crank-gears have been operated upon by theelevating cogged wheel. The arms or elevating-levers B are made with slots J, for the purpose of caseof derangement of the gear-cranks.

allowing them to spring in Having described my improved fancy-loom. what I claim as my invention, and desire t secure by Letters Patent in this division ot reissue, is-

'1. The combination, with the vibrating levers B, ofan elevating bar or plate independent of the pattern-chain, to raise said levers out of connection with the patternchain, and place them in gear with the lifting mechanism, for the purposes set forth.

2. The combination, with the free ends of the vibrating levers B, of the slotted plate B, substantially as and for the purposes set forth..- v

3. The combination, with levers B and locking deviced and e, of shaft 0, arm 0', and

cam d, substantially as and for the purposes set forth. y 4. The movable cap or lever holder E, substantially as and for the-purposes set forth.

5. The combination, with the separate gearcranks H H and their vibrating leversB B,

. of the compound levers G and the connections 1) p, substantially as and for the purposes set forth.

6. The combination, with the vibrating arms B and their gear-cranks H, of the cogged lifting and depressing wheels 0"E and angle-levers C, said parts being constructed and relatively combined with each other on the elevated frame D, as shown and. 'described.

7. In combination with the pattern-cylinder B, the lovers B, having the curve 1, as and for the purposes set forth.

'8; The combination, with the shaft of the pattern/chain or wheel and gear K, of the locking-arm L and its bolt, substantially as and for the purposes set forth.

I I LUOIUS J. KNOWLES. Witnesses:

Taos. H. DODGE, EDWIN Moons.

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