US554886A - Mechanism foe looms - Google Patents

Description

'(No Model.) 4 Sheets-Sheet 1.

A. LOOKWOOD. SHEDDING MECHANISM FOR LOOMS.

No. 554.886. Patented Feb. 18,1896.

(No Model.) 1 4 Sheets-.-Sheet 2. A. LOGKWOOD. SHEDD-ING MECHANISM FOR LOOMS.

No.] 554," 886.' Patented Feb. 18, 1896.

(No Model.) 4' Sheets-SheetB A. LOGKWOOD. SHEDDING MECHANISM FOR LOOMS.

N g. 554,886. Patented Feb. 18, 1896.

wryu man: W n

4 Sneak-Sheet 4.

(No Model.)

A LOOKWOOD SHEDDING MECHANISM FOR LOOMS.

Patemted Feb. 18, 1896.

UNITED STATES- PATENT OFFICE.

AMOS LOCKIVOOD, OF HALIFAX, ENGLAND.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 554,886, dated February 18, 1896.

A Application filed January 10, 1895. Serial No. 534,473. (No model.)

To all whom it may concern.-

Be it known that I, AMos LooKwooD, a subject of the Queen of Great Britain, residing at King Cross, Halifax, in the county of York,

England, have invented new and useful Shedwherein the healds or heddles are raised as well as pulled down or depressed by the shedding mechanism, no springs or weights being required for the one or the other of such movements, and my said invention consists of constructing and arranging certain of the operating parts so that I am enabled to effect the jointing or coupling together of several of the parts in a more efficient yet simpler and less expensive manner than has heretofore been the casein the production of mechanism for similar purposes. Thus stronger and more durable mechanism results. To attain this object I employ certain well-known parts to or in connection with which I couple or arrange other parts, as hereinafter described and as illustrated by the accompanying sheets of drawings, in which Figure 1 is a front elevation of the shedding mechanism shown as detached from a loom. Fig. 2 is a sectional elevation of said shedding mechanism, showing only a little of the framework, the other parts of which are omitted for the sake of clearness. Fig. 3 is a similar view to Fig. 2, but is drawn on a reduced scale and shows the method of coupling the mechanism to the heddles of a loom, this latter being also omitted from the drawings as unnecessary. Fig. dis a top view of a sufficient part of the mechanism to show the relative proportions and positions of the prin cipal parts. Figs. 5, 6, and 7 are drawings in detail, hereinafter referred to.

Similar letters refer to similar parts throu ghout the several views.

A A indicates the framework of the machine, and B the healds or heddles.

In carrying my invention into effect I make use of the jack or top levers, a, as Well as the bottom levers,b,which are formed and coupled or joined together and to the heddles Bin the usual and well-known manner, as by the rods 0 and cords d.

-The arms a of the levers a are coupled by the rods 6 to the toothed crank -wheels f, (mounted to revolve on the shaft 1 which are caused to rotate or move by the racks g as these latter are moved backward and forward or reciprocated, such movement of the wheels f being to bring their crank-pins f from one side of their pivotal centers to the other, the two extremes being shown by Fig. 3. These racks g are mounted to slide upon the cross-rail or framework A A of the machine. Thus their movements are at all times in a straight and even course.

In each of these racks g are formed two notches g 9 in suitable relative positions, as shown, so that catch-pieces h h, carried by the two reciprocatory draw-bars k is, may engage therewith, as is desired, for causingthe said draw-bars k to move said racks 9. These draw-bars k k are arranged to slide within guiding-slots m formed in each of the side frames A A, such slots m being parallel with the upper edges or surfaces of the racks g, while the catch-pieces h h are made and formed to slide freely in slots 10 made in these draw-bars k k, by which bars k 70 they are at all times carried, so that when any one of these catch-pieces h h is allowed to move and fall by gravity into one or other of the notches g g in the sliding racks 9 such rack 9 will be coupled to and caused to move with the draw bar 70 or k carrying same, and that through a sufficient space to cause the wheel f to rotate as desired.

To the extremities of the draw-bars k k are pivotally attached the pendent levers n n n a the other extremities of which span the extremities of the shaft 0 and the fixed studs or pins 10 19, respectively, which shaft and studs form the fulcrums for these levers, so that by these latter being coupled with the rods (1 g Q2 g to the double eccentrics r r, mounted on the shaft 0*, as these eccentrics rotate, the levers n n n n are moved back- .ward and forward, and so also are the drawbars k k, and as will be seen the movements of said draw-bars k is will be in opposite directions. Now, in order that the series of catch-pieces h h, which are respectively carried by these draw-bars 7t: It, may be operated by the pattern-surfacet so that they may thereby be allowed to fall by gravity into or be raised out of their respective notches g 9 as may be indicated by said pattern surface t, four series of levers s, s, 5 and s are pivotally mounted and arranged on the shafts u, a, U2, and u, in order that one lever in each series may be laid hold of by one or a single red in the series of connecting-rods c, said coupling of the rod n to the levers s and 8 being by same directly laying hold of them, while its couplings to the levers s and s are respectively through the medium of the levers s and the levers s. This series of rods 1 reaches for contact with the pattern-surface 1, so that when moved thereby, as when the pegs t are pressed against them on the advancing of the pattern-cylinder, the ends of the levers s s s s, which are for contact with the pieces h 7t, are caused-to descend, while when said pattern-cylinder recedes then such of the rods 1) as had been pressed forward by it recede also, their action in this direction being effected by the gravitating of the weighted arms 8 of the levers s, which are made sufficiently heavy on each lever s as to be enabled to move all the other levers s, 8 s, and s, to which it is coupled by the rod r.

The series of levers s and s are situated to act upon the pieces h 7t when these are at the extent of their movements in an outward direction, as shown by Figs. 1 and 3, while the levers s and s are for acting upon them when at the extent of their movements in the opposite direction, on which one series is approachin g the other, thus provided a rod 1; is pressed forward by a peg t, as before described, such action being timed or regulated to be performed as the series of pieces h h approach their said extreme positions of their movements, the two pieces h and h, carried by one or other of its pair of levers s s or 85 respectively, (the levers s and 5 being the ones shown in such position by Figs. 1 and 3,) will be allowed to descend by gravity and so enter its notch g or g in the rack g. However, if the rod 1* is not thus pressed at this time the counterbalancing-arm of the lever s will prevent the pieces hor h from deseending at this time, and further provided such piece h or lb was already in its descended or lowest position when it thus approached its lever s, .9, or s the actions of the inclined surfaces on these pieces h 7t upon tho e on the arms of the levers they were approaching would cause them to ascend out of their lowered positions when in their notches into their raised positions out of same.

The notches g g are arranged or formed in the rack g in such relative positions that when the pieces 71/ h are widway in their respective paths of motion these notches g g are directly beneath them, by which it will be seen that when the rack g is at the extent of its movement in either direction only one or the other of its notches g or 9 can possibly be in position for receiving the piece 7L or it, so that although they are both allowed to descend as the rod 1; is pressed by the peg t, yet one alone will be effective by falling into its notch, the other of them alighting upon the smooth upper edge of the rack g, and is thereby ineffective as regards being an operator at this time,while by each piece h h having on its upper end, its, a projecting rib 7r, extending laterally from it to slide upon a similar rib a, formed upon each of the guide-pieces w w, (two series, corresponding in number with those of the pieces h h, being carried by being fixed upon or made to take over the cross bars or shafts w" w' and 10 10 respectively,) as its draw-bar 7.; or continues to move it at such time. Then it issupported or prevented from descending as and when its notch g or g would by the actions of the other bar 70 or k and its piece h or 71, be brought beneath it the same as is shown by Fig. 2. In this manner one rod '0 is allowed to operate or control the movements of two pieces h and h effectively.

Oseillatory motion is imparted to the pat tern-barrel t by same being moved in one direction by the cam a (mounted on the rotary shaft 00) operating the levers :0 and w", pivoted at 00', and in the other direction by the spring ,2, which has one end attached to the lever 00 and the other to a projecting piece on the framework A, while intermittent rotary motion is imparted thereto by the train of wheels 1 peg-wheel y and star-wheel 1 from said shaft 0, which derives its motion from the shaft 7' through the gear-wheels o and 0 The shaft 0' is rotated by being geared with the wheels 7 0' to the shaft 0*, which is in turn rotated through the vertical shaft 1" by any motor part, as the top or bottom shaft of the loom.

From the foregoing description it will be seen that the several parts for operating the racks g are all arranged so that they have their several respective bearings common to all the series. Thus the racks 9 have notches g 9 the catch-pieces h h are all arranged to slide in their respective grooves common to their series, and the several series of levers s s s s are carried by their common shafts a u a if, by which means stronger joints are formed, and that in an easier and more expeditious manner than when each operating part has to be pivotally connected to another.

Having thus described my said invention and the manner in which same may be carried into effect, what I claim is- 1. In loom shedding mechanism, the combination of draw-bars, means for imparting reciprocatory motion to these bars, catchpieccs arranged to slide within slots made in. said bars, means operated by a pattern-sinface for actuating said catch-pieces, sliding racks having notches to receive said catchpieees, crank-wheels gearing with said racks, jack-levers, connecting-rods, coupling said jack-levers and crank-Wheels together, bottom levers, rods for coupling these latter to the jack-levers, heddles and connections for coupling same to the jack and bottom levers substantially as specified.

2. In loom shedding mechanism the combination of draw-bars, means for imparting a reciprocatory motion thereto, catch-pieces arranged to be carried by said draw-bars, four series of levers arranged to operate said catch-pieces, connecting -'rods arranged to couple said series of levers together, pattern mechanism for operating said rods, sliding racks, operated by the catch-pieces in the draw-bars, crank-wheels. operated by said racks, levers coupled to said crank-Wheels, heddles operated by said levers and connecting-rods for coupling said heddles to said levers substantially as specified.

3. In loom shedding mechanism the combination of reciprocatory draw-bars, means for operating same, catch-pieces carried by these draw-bars, four series of levers for operating these catch-pieces each series having its common bearing-shaft, means for coupling said levers together and pattern mechanism for operating same, sliding racks having notches for the reception of the catch-pieces carried by the draw-bars, crank-Wheels gearing With said racks, rods for coupling said crank-Wheels to the heddles and said heddles substantially as herein specified.

4. In loom shedding mechanism, the combination of reciprocating draw-bars each carrying a series of catch-pieces, means for operating said draw-bars, catch-piece-operating levers, rods whereby said levers are coupled together, the pattern-surface operating the catch-pieces, means for preventing said catchpieces at certain times from entering the notches in their respective racks, said racks, crank-Wheels gearing therewith, the heddles, and means for coupling said crank-wheels to the heddles, substantially as specified.

AMOS LOCKWOOD.

WVitnesses:

SAMUEL HEY, RD. B. NIcHoLLs.

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