US650280A - Shedding mechanism for looms. - Google Patents

Description

No. 650,280. Patented May 22, I900.

H. sTAuBu. SHEDDING MECHANISM FOR LUOMS.

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No. 650,280. Patented May 22, 1900. H. STAUBLI.

SHEDDING MEGHANISM- FORL-OOMS.

(Application filed Opt. 15, 1896.)

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IUNITED STATES PATENT OFFICE.

HERMANN STAUBLI, or HORGEN, SWITZERLAND.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 650,280, dated May 22, 1900. Application filed October 15, 1896. Serial lilo. 608,995- (No modeld T [6 whom, it may concern.-

Be it known that I, HERMANN S'rliUBLI, a citizen of the Republic of Switzerland, and a resident of I-lorgen, in the Republic of Switzerland, have invented certain new and useful Improvements in Shedding Mechanisms for Looms, (for which I have obtained Letters Patentin Switzerland, dated July 3, 1896, No. 12,154; in Germany, dated July 23, 1896, No. 92,948; in France, dated July 20, 1896, No. 258,222; in Austria, dated October 26, 1896, No. 46/4,292; in Hungary, dated September 30, 1896, No. 7,210; in Spain, dated August 22, 1896, No. 19,550; in Italy, dated September 30, 1896, No. 42,361; in Belgium, dated August 17, 1896, No; 123,056, and in England,dated September2, 1896, No. 19,355,)

of which the following is a specification.

My invention relates to shedding mechanism, and particularly to that class of shedding mechanism actuated by lag-chains and known as dobby mechanisms, and has for its object an arrangement of parts whereby the lag-cylinder can be driven from the weaving mechanism after each pick and will be equally elfect'ive if run in apositive or negative direction, at the same time adapted for top, bottom, or center shedding, and gives, above all, a uniform distribution of power.

Referring to the accompanying drawings,. in which like letters and numerals of reference indicate like parts, Figure 1 is a side elevation of my machine. Fig. 2 is a part plan View showing the indicator-levers, lag-cylinder, and driving mechanism. Fig. 3 shows the driving mechanism for the lag-cylinder in side elevation. Fig. 4 shows the pawl and pinion for the lag-cylinder gear, and Figs. 5 and 6 are details showing the indicator-levers.

In Fig. 1, a a are the main or harness levers, (rear part only shown,) which carry the heddles and are of usual form, their rear ends connected to the customary jacks b. Ateither end of the jacks b are the hooks c 0, each guided in a suitable grid 00 m and engaging their respective reciprocating griffs d at" when in their lowered position. The griifs or knives d (1, each guided by and reciprocating in slots in the frame of the machine, have perforations at either end to receive the hooked ends of the adjustable operating-rods. e and e.

opposite ends and held in suitable bearings by nuts (3*, which both sec'ure the rod in po-- sition and admit of its longitudinal adjustment. The bearings for these rods are held at. two ends of the usual three-armed oper= ating-lever f, comnion to machines of this class and here driven independent from the mechanism for driving the lag=oylinder.

The lag-cylinder G and the operating-pile ion are journaled in a detachable bracket h, depending from the frame 2. The cylinder G, operated by a drivingear it, (here shown as having sixteen teeth,) carries the lagchains G, of any suitable form, Fig. 1, and receives its intermittent motion through a pinion I, having one tooth,which may, if desired, be made integral with the sleeve of the bevel-gear i, which drives it. Gearing with with this bevel-wheel i is a second bevel gear 91 on the end of a counter-shaft p, journaled in a yoke-shaped bracket q, also detachably secured to the frame of the machine. This counter-shaft carries a sprocket-wheel h, driven by a chain it from the weaving mechanism.

A lever n, fulcrnmed at one end in the frame, carries the roller m, which serves as a pawl to look the wheel h in position after turning through one tooth to prevent any slip of the lag-cylinder due to unequal weight of the chains on either side, and at the opposite end of the lever 02 is a tension-spring 0, secured at its lower end to a bracket 0, depending from the frame .2 and detachable therefrom. The roller m is lifted against the tension of the spring 0 and rolls over a tooth when the pinion Z forces the wheel it around the space of one tooth. This last-described mechanism for driving the lag-cylinder being rel lower hooks 0, while the other is shorter and has a straight end, on which rests the usual needle y, that lifts the upper hooks Both in the driving gear 11 of the cylinder be changed to suit the requirementsof the loom. Having thus described my invention, what the forward and rear ends of these indicator- I claim as new therein, and desire to secure 5 levers are guided in grids a; andm and their by LettersPatent, is-

cam-faces are not, as is usual in such ma- Thecombination withthe pattern-cylinder, chines, at the samedistance from their pivot-l mechanism controlled by the movements of points g, but are at difierent distances therethe loom adapted to impart to said cylinder from, so that the pins or pegs-on the lags of av step by-Step rotation in unison with said 40 10 the lag-chain G will'lift one before the other. movements, the hooks and gritfs; of a pattern Consequently the knives or griii's must recipor lag chain the lags of which are provided rocate relatively to the lifting of the hooks. with pins or pegs and weighted indicator- In Figs. 5 and 6 I have shown the camlevers'actuated thereby, said levers arranged faces 1 2 of the indicator-levers so constructed iif pairsa'nd provided with cam-surfaces dis- :5 that they will fall after two revolutions of placed relatively to each other a distance pinion l, prone-eighth of a revolutionot' the equal to the travel of apatter-n-chain pindurlag-cylinder, and'the upper 'hooks'c will have in g a partial rotation of the pattern-cylinder, fallen on their grifi d, and said griff will be whereby the upper and lower hooks actuated on itsjreturmthrough its lost motion, the dis- I by a pair of levers are moved successively in- 2o tanee3, while-the other griff is passing into stead of simultaneously, into and out of enposition to receive the lower hooks when regagement with their griifs by successive parleased by their tappet-levers. "tial rotations of the pattern cylinder, for the The position of the camsfaces enables more purpose set forth. uniform distribution of power, and conse- In testimony whereof I hereunto sign my faces may be altered and the number of teeth quently more even and uniform running of the machine, and decreases the jarring to a great extent, thus reducing the liability to over and under shedding while the loom is in l ope tion- It is obvious that the position of the camname, in the presence of two subscribing \vitnesses, this 19th day of August, 1896.

Vitnesses:

I-I. LABBARD,

EMIL BLU

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