US81347A - Improvement in looms - Google Patents

Description

' G. OROMPTON.

LOOM.

No. 81,347. Patented Aug. 25, 1868.

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Letters Patent No. 81,347, dated August 25, 1868.

IMPROVEMENT IN LOOMS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, GEORGE CROMPTON, of the city and county of Worcester, in the State oi' Massachusetts, have invented an Improvementin Looms; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention suiiicient to enable those skilled in the artto practise it.

My invcntionrelates particularly tothe construction andarrangemont of thejack-meelianism of that class of fancy-looms employing angular lifter, depresser, and evener-levers operating upon upright jacks to form the shed, and upon horizontal harness-levers (to which such jacks are jointed,) to return the jacks to their normal position for redistributionby the pattern-chain or cylinder.

My invention consists primarily in forming the connection between each angular lever, and the slide-rod which actuates-it, by means of a gear-rack fixed to the slide-rod, and a segment-gear on the adjacent end of the angular lever. Also, informing the fulcrunied end of each angular lever with a slide-piece so arranged that the lever'may be lengthened or shortened-fin purpose of adjustment.

Thedrawi'ng represents a loom-frame having themechanism embodying my improvement mounted thereupon.

a denotes the frame; 6, the lathe-shaft. ccdenote respectively the upper and lower horizontal levers, between and to the inner ends of which the harness-frames are strn'ng or suspended, these levers being connected at their front ends by the cording d, and the jack-plate c, each jack being jointed at its upper end directly to the outer end of its harness-lever, and strung from its lower end to the outer end of the corresponding lower harness-lever, as seen at A.

Each jack-plate has a hook on its outer edge, for engaging with an angular lifter-lever, f, and a similar hook on its opposite edge, for engaging with an angular depressor-lever, 5 these levers being fulcrumcd to brackets or plates 7L, and actuated from slide-rods 2', and-the jacks being thrown into connection with the lifter by the cords, or with the-depressor by the pattern-cylinder k, as will be readily understood.

After each distribution of the jacks, and formation of the shed thereby, the jack-hooks are evened or brought into'line to free themselves from the lifter and deprcsser by angular cvener-levers, I, placed one above and one below the harness-levers c, and hung from a fulcrum-plate, m, these levers bringing the harness-levers into horizontal line, and clamping them together, the motion of the'levers being coincident with the motion of the respective litter or depressor-lever to which each is connected by the slide-rod 1', each angular 1ever,fg I, being connected to and actuated from the slide-'rod by means of a segment-gear, m, on the end of the lever,

meshing into and actuated by a gear-raek,n, fixed to the slide-rod, as seen at A, the opposite end of the lever being formed of a sliding and adjustable piece, 0, to enable the lever to be adjusted in length.

I claim, in combination with the upright hooked jacks, the angular lifter, depressor, or evener-lever or levers, connected tovthe actuating sliderod by means of the gear-rack fixed'to the slide-rod, and the segmentgear on the lever, substantially its-described. v

I also claim, in combination with jacks and slide-rods, a lever or levers adjustable in length by means of a sliding piece or pieces, substantially as shown and described.

GEORGE CROMPTON.

Witnesses:

Henson WYMAN, J. A. win.

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