USRE7785E - Improvement in looms - Google Patents

Description

6 Sheets-Sheet 2.

L. KNOWLES.

' LOOM. 110.7,785. Reissued July 3, 1877.

INVERTU ITNESS E5:

Y y/i 5 Sheets-Sheet. L.- J'. KNOWLES.

LOOM. No. 7,785. Reissued July 3, 1877 W FTNEEEES; I M

'L. J. KNOWLES.-

Loom:

5 Sheets Sheet 4.

Nu. 7,785. Reissue d July 3,1277.

5 Sheets-Shani.

AL. J. KNOWLES.

LOOM.

Reissued July 3, 1877.

,M M W UNIT D" STATES? LUCIUS munowtns. OF wononsrne, MASSACHUSETTS.

IMPRQVEMENT IN LGQMS.

PATENT. OFFICE.

Specification forming part of Letters Patent No. 134,992, dated J annex-y 21, 1 873; Reissue No. 7,785, dated July 3, 1877; application filed May 17, 1877.

To all whom it may concern:

Be it known that I, Looms-J. KNowLEs, 'of the city and county of Worcester and Commonwealthof Massachusetts, have invented certain new and useful Improvements. in

improved loom. Fig. 2 represents a back-side view of the loom. Fig. 3 represents anend 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 harness-operating mechanism. Fig. 6 represents a side view'of the elevatiug-plate, by means of which all of the 'heddle's are thrown into one shed, for the pur pose hereinafter described. Fig. 7 represents sectional views of the'lever-holding device, as

hereinafter described; and Fig. 8 represents a side view of the lever for operating the shuttie-boxes.

To enablethose skilled in thevart to which my invention belongs to make and use the same, I will proceed to describe it more in detail.

That part of my invention which forms the vsubjectmatter of this division of reissue relates to a new organization of mechanism for operating the shed forming mechanism in fancy-looms, and has for its object such a con struction of parts, and such a connection between the crank-shaft and the shed-forming devices and their pattern-surface, that the shedforming devices and pattern-surfaces may be moved to make and perfect sheds while the crank-shaft remains at rest. f

The accompanying. drawings represent a Knowles fancy-loom, which will be first described, after which that part of my invention referred to above will be specifically claimed.

It often happens that it is necessary to move the harness-motion to find the proper pick when the filling-thread has been broken, run out or for other causes. To avoid putting in motion the whole loom mechanism when DIVISION B.

this is done, I combine with shaft A, which gives motion to the harness mechanism, a clutchhub, A, having a groove, 0., into which the forked end of lever A .is fitted. The other end of said lever extends through to the front Eof the loom, and is arranged within easy reach When, therefore, the opera will be disconnected from the clutch-hub upon thedriving-gear below it. Lever A" maybe held down by any suitable catch. The operator can now turn the harness mechanism by means of power applied to any suitable part thereof, and that, too, without turning 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 effective 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 into one line, handle b 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 ofthe slots 12 b rest upon the stationary guide screws or pins which pass through said slots, andare fast in the stationary comb B, in which the front ends of levers B work. When in this position pl'ate B will remain until piished 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 harnesswlevating cogged .wheel 0 will bring the up er ends of all the angle-levers 0 forward, icre they will remain','all the heddles being raised to thehighest 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 the heddles shall meet may be varied.

" 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 bear ings in the elevated part D of the loom-frarne D, and has attached to its outer end a bent arm, 0, which is acted upon by a cam, d, upon the outer end of the shaft of the harnessdcpressing cogged wheel E, so as to permit the upper hooked end d of the arm 6, fast sued 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; consequently the operator cannot turn the pattern chain or wheel until the hooked end d of arm alias 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 convenient to have spine arrangement whereby each or all of the levers can be removed from their fulcrums for'repairs, or for other purposes. I Y

My improvement for accomplishing this purpose is very simple, and yet effective, and it is shown in the drawing in combination with the fulcrum of vibrating levers B, and which improvement consists of a movable cap, E, with ears f, having holes through which the fulcrum-rod f passes, as shown in the drawing. The inner surface of the movable cap E is made to conform to the circular ends of the vibrating 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 leversupporting frame F, whereby' the ends of said frame can be screwed or clamped against the earsand ends of thelever-ca-p E by means of nut e, when the cap has been once adjusted, and thus hold it in place without binding the ends of the levers. The ends of the lovers are slotted out upon their under sides so that they can be dropped down upon the i ulcr'umrod, as indicated in Fig. 5, after which the cap Eis' turned up over their ends,

as shown in thg same figure.

, If it is desire to withdraw or take out any one or all of leversB, the operator simply, loosens nut e and turns cap E back, when the rear ends of the levers can be lifted off of the fulcrum rod. This, it will be noticed, is a good andus'eful impr'oyementfor holding a series of levers in place, and which is suscep t'ible of extensive use.

a loom is regarded by manufacturers from What it ought m and .I have been om the practical difficulties which 1 ha e met with as a manufacturer of looms, to combine certain elements heretofore used by me separately in different looms in the loom shown in the drawing, but under difl'erent combinations and'arrangements, whereby substantial and important advantages are obt 'ned, and

the loom rendered far useful.

The shuttlebox motion is obtained in this more desir ble and .loom by a compoundlever, G, Figs. 2 and 8,

the lcnger'part, G, of the lever-being hinged or fulcrumed to the lower end of the otherpart, G, at m, (see dotted lines,) while the latter is fulcrumed at n. The upper ends of bothcf said levers are operated, by means of connectingarms p, from separate gear-cranks H, Fig. 8, connected with the inner ends of two of the vibrating levers B.

By this arrangement a four-motion shuttlebox can be very successfully operated. For instance, the lower end of, compound lever G being connected with the shuttle-box frame by cords i, or in any other convenient or wellknown manner, one of the boxes being in place, the loom is started, when, after the first box has been used,- lever part G is drawnforward, when the lower end of lever part G will be thrown back, 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 discounting one, as it is called-that is, permits only one box, the third being raised into position-whereas, the sweep of lever part G would have been sufficient to have raised the fourth 'box into place but for the back motion of lever pant 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 thatwith two compound levers, G, connected to crank-gears H and vibratihg levers B, a four-motion shuttle-box can lie operated in a very perfect manner, and thus the elements patented to me February 24, 1863,have been combined with those described in the patent granted to me December By this-arrangement the pattern wheel or chain can be moved without moving the barness-m'otion, since, by withdrawin g the springbolt on the arm L, it, together with the pattern-wheel, can be revolved without turning gear K. Those skilled in the art will appreciate this improvement", since they will seethatthis pattern chain or wheel can be adjusted readily..

. In the operation of the-loom patented-t0 me February24, 1863, there have been foundse'vnesses' with whi Thenfiagain, to obtain the necessary variation in the elevation or depression of the several lines of heddles, the connecting-arms had to be connected to the gear-cranks in diflerent positions, and consequently they had-to be all marked or numbered, 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 sending for the right one..

These difliculties andothers which might be named have been overcome by my present improvements, since I haveconnected with the loom-frame 'D an elevated frame, D, of such construction" that theharness and shut tle'box'motions, or mechanism for producing such motions, can be located above one end of the loom, and .'yet withinreach of theoperator. The gear-cranks,v lifting and depressing wheels, occupy horizontal positions, and such, too, that angle-levers O can be comvbined therewith, whereby all the gear-cranks and their connections can be made alike, the

difl'ereiice in positions of the various series of heddles being obtained by means of notches in the angle-levers, and into which notches curdsorchains new be hitched for the purpose of giving-p rt tion to the heddles or bar- 6 they-are connected, in the usual manner. 4 The under sides of the vibrating levers B, Fig. 5, are made with curved or circular recessesl, for the purpose of allowingthc pattern-wheel B", after its points or finger-s3 have'raised the levers B to the proper height, to continueto move without lowering them, so that they may remain in position until their crank-gears have been operated upon. by the elevating cogged wheel. The

arms or elevating-levers B are made with slots J, for the purpose of allowing them to spring in case of derangement of the gear-cranks.

Having described my improved fancy-loom, what 1 claim as my invention, and desire to secure by Letters Patent in this division of reissue, is'

1. A crank-shaft and shed-forming shaft,

connected with and adapted to operate shed- Y forming devices, and the pattern-surface therefor, in combination with a clutch to engage and disengage the crank and shed-forming shafts, to weave, or enable the shed-forming devices and' pattern-surface to be moved in unison,

and independently of the other parts of the' loom, to form sheds and find a true shed, I

while the crank-shaft remains at rest.

2. A shedding-shaft'and shedding mechanism, and its pattern-surface, connected therewith, and situated at the same end of the loom, in combination with a clutch adapted to disengage theshedding-shaft from the con trol of the crank-shaft, to permit the shedding-shaftto operate and form sheds without moving the crank-shaft.

' 3. Ashedding-shaft adapted to be connected with or disconnected from the control of the lay or crank-shaft, in combination with and adapted to operate a rotary pattern-surface aud' shed-forming devices to find a true "shed. a

4. Shed-forming devices and a pattern-surface therefor, and crank-shaft, and mechanism connected with and adapted. to operate the shedding devices and pattern-surface by the movement of the crankshaft, in comhination with a clutch adapted to be disengaged from the control of the crank-shaft, to permit the shedding devices and pattern-surface to be moved in unison and independently of the other parts of the loom, while the crank-shaft LUOIUS J. KNOWLES. Witnesses:

THOS. H, DODGE,

EDWIN E. Moons remains at rest.

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