US956980A - Shedding mechanism for looms. - Google Patents

Description

P. LABONTE.

SHEDDING MECHANISM FOR LOOMS.

APPLICATION FILED FEB. 1, 1909.

956,980. Patented May3, 1910. j

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PETER LABONTE, 0F FALL RIVER, MASSACHUSETTS, ASSIGNOB T0 CROMPTON KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

SHEDDING MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented May 3, 1910.

Application filed February 1, 1909. Serial No. 475,346.

To all whom it may concern:

Be it known that I, PETER LABoN'rE, a citizen of the United States, residing at Fall River, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Shedding Mechanism for Looms, of which the following is a specification.

My invention relates to shedding mechanism for looms, and particularly to the grate or rack which is used in a dobby, or other form of shedding mechanism, to guide and hold in proper position the hooks which are connected indirectly with the harness levers or jacks, said hooks being under the control of suitable pattern mechanism, and engaged by reciprocating knives or lifter bars, and moved to operate the harness levers or jacks, to cause the raising of the harness frame.

My invention more particularly relates to the type of grate or rack shown and described in U. S. Letters Patent, No. 484:,922, and the object of my invention is to improve upon the construction of the grate or rack shown and described in said patent. In said patent there are two parts or members form ing the grate or rack, which are bolted together. The lower part or member has the separating dents or bars thereon, and extending up therefrom. Ithas been found in practice that the construction shown and described in said patent is objectionable, for

in case of'the breaking of any one of the dents or bars which is liable to occur, it is necessary to remove and substitute anew lower-part or member which is much more expensive than the upper part or member of the .grate or rack.

In my improved construction I have the separating dents or bars on the upper part or member of the grate, so that in case of the breakage of a dent or bar, it is only necessary to remove the uppefp-art or member, and substitute a new upper part or member, leaving the lower part or member attached to the frame.

Referring to the drawing :Figure l is a front view of a grate or rack embodying mty improvements, looking in the direction 0 arrow at, Fig. 2. Fig. 2 is a section, on line.2, 2, Fig. 1, looking in the direction of arrow 6, same figure. Fig. 3 is a plan view of the grate or rack shown in Fig. 1, looking in the direction of arrow 0, and, Fig. 4

is a vertical cross section of a detached portion of a dobby, and my improved grate or rack attached thereto.

In the accompanying drawing, 1 is a portion of a dobby frame, 2 is one of the harness jacks or levers, which is pivotally mounted on its lower end on a transverse rod 3, 4 is a connector sotermed, which is pivotally mounted at its central portion on a jack 2.

5 is a hook or hooked jack, pivotally attached at one end to the upper end of the connector 4, and 5 is a hook or hooked jack pivotally mounted to the lower end of th connector 4.

6 and 6 are the reciprocating lifter bars for the hooks 5, and 5, respectively. The

lifter bars 6 and 6 have a reciprocatingmovement in the guideslots 1 in the frame 1.

7 is a vertically extending wire which raises and lowers the upper hook 5, accord ing to the indications of the pattern mechanism, not shown.

As hereinbefore stated, in case of the breakage of a dent or bar of the rack or comb it is only necessary, in repairing the breakage, to remove the upper part or cap member 10 of the rack or comb, leaving the lower part or member 8 attached to the frame of the dobby. lVith the lower part or member 8 thus left in place on the dobby the cross-bar thereof will serve as a support for the hooks which, if the lower part or member were entirely removed, as has heretofore been required, are likely to fall down and become entangled with the other parts of the mechanism. By thus providing the upper member or cap 10 with the integral bars or dents 10*, it will be understood that not only is the replacement of. a broken part more conveniently efliected, but by leaving the lower part or member 8 in place it will serve as a support for the hooks, as above stated.

All of the above mentioned parts may be of the usual and well known construction.

I will now describe my improved grate or rack, which in this instance is shown attached to the dobby frame for the upper hooks 5, to hold said hooks in their proper relative position. 7

The grate or rack consists of the lower part or member 8 having a bar 8 extending in a horizontal plane, and two side bars 8 extending in a vertical plane. The side bars grate 01? rack, is secured to the frame 1, and

" placed in position over the dents or bars 10 on the part 10, form a se- 8 have side lugs or projections 8 with holes 8 therethrough each to receive a bolt to secure the art 8 to the frame 1. The part 8 also has inwardly extending lugs or ears 8, see Fig. 2, 'to support a transverse rod 9, which in connection with a series of notches or recesses 8? on the rear side of the bar 8, hold and guide the upright wires 7.

The second part or member of the grate or rack consists of a transverse bar or plate 10, which has thereon, and preferably made integral therewith, downwardl extending bars or dents 10*", which are pre erably made beveled at their lower ends, as shown in Fig. 2, and extend into beveled recessesB in the bar 8?. The part or member 10 has at its ends, side extensions or lugs 10;, each with an opening therethrough to receive a bo l-t 11, which detaehably'secures the part or member 10 to the part or member 8;

In practice the part or member 8 of the after the hooks 5 have been properly ad justed' or placed, the part or member 10 is part or member 8 and secured thereto" by the bolts 11. The

ties ef verticall extendin ""d'es throu h which the ho0ks 5 extend. g gm g It will be understood that the details of construction of my improvements may be varied if desired, and they may be adapted to be used for the lower hooks or jacks.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is A hook guidin'g'rack or grate for dobbies and the like, comprising a lower part or member provided with side extensions adapted to be seeured to the frame, and an upper part or member provided with in tegr'al dents or bars, and means for removably attaching the said upper part or memher to the said side extensions of'the lower part or member; whereby should adent or bar become broken the said upper part or member may be removed, leaving the crossbar of the said lower part or member in position to support the hooks.

PETER LABONTE.

Witnesses:

J EAN B. PAnADIs, LOTTIE L. Davis.

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