US12457A - to the at water- - Google Patents

Description

descend by their weight, or can be drawn down bysprings y', or weights, if preferred, and they are drawn up when required by the action of the cams cZ, on the treadles and their connections with the levers to which the harness leaves are suspended.

The harness is divided into twov sets, one half suspended to the lower set of levers g, g, and the other half to the upper set of levers g', g, and each set must be complete in itself and the number of leaves in each set depending upon the fabric to be woven, and therefore to be determined in mounting the loom. One half of the Warp threads for each web are passed through the mails of one set of harness, and the other half through the mails of the other set, so that each set can weave a complete web of a given width, or both sets may weave a web of double that Width. The one set of treadles actuates both sets of harness; but if one set be lifted and kept up then they will only actuate the other set. When weaving the fabric or web of the entire width both sets of harness are kept in action; but when a button hole is to be formed the action of one set is suspended and lifted up that the shuttle may pass under the warps gov erned by it, while weaving the web on the other side` of the button hole whatever may be its length, which is effected in the following manner: The two sets of levers g, g, and g, g, are each set divided into two parts, one part extending from near the middle to the right, and the other to the left. They turn on fulcrum pins z", i', and 2, 2, and their outer ends rest in stirrups 7"., j', jz, j2, one at each end andy adapted to slide vertically in grooves in the two beams 7c, Zo, and k', Zc, which inclose the levers. These stirrups are connected each to the outer ends of levers arranged in pairs Z, Z, and Z, Z, one pair for each set of stirrups, the two levers of each pair being connected by a pin on the end of one working in a slot in the other, so that one will work the other. And one of each pair is connected by a rod m, with one of two sliding bars n and n so that when either of these bars are drawn down the two stirrups connected therewith, in the manner described, will be lifted up, which will in turn lift one set of levers g, g, and g', g', and thus elevate and suspend the action of one set of harness, while the other continues to operate.

The bars n, and n, are drawn down by a treadle 0, placed by the side of other treadles, and actuated by a cam p, on the end of the cam shaft, there being a corresponding cam and treadle p', and 0', on the other side to give the action in opposite directions by having the two treadles o, 0, connected by rods with the opposite ends of a balance The treadle 0, is connected by a joint link 7', with a slide s, which works on ways '15, t, and by this connection the slide is made to move up and down at every rotation ofthe cam shaft. `Now the bars n, and n', carry a spring catch u, u, and whenever either of these catches is forced toward the slide s, it takes hold of it in its descent and draws down the bar, and as the bar is notched at fu, to receive a spring dog lw, it is held until the dog is drawn out. In this way the two bars are drawn down to lift up either of the two sets of harness, or liberated to permit the harness to be operated by the treadles. But the time when either set of harness is to be lifted, and liberated, and the length of time that they` shall be suspended, and kept in action, is determined by a cam barrel m, with four cam wheels or divisions l, 2, 3, 4. It receives motion from a worm y, on the cam shaft e, and thence through a train of wheels a, z, a2. In this way slow motion is imparted to the cam barrel, and

`the four divisions are so disposed as to act each on one of four spring levers ci, a2, a3, a4, the first two corresponding with the bars n and n, so that when a depression of the divisions in the cam barrel passes under either of these two levers, they are permitted to be forced by the tension of their springs and thereby to force in the spring catches u, u', on the bar n, or n', so that the slide s, will catch hold of, and thus draw down the appropriate bar which is there held by the spring dog. Now then it follows that the circumference of this cam barrel, its velocity relatively to the other parts of the loom, and the distance between the several depressions in the vsecond and third divisions of the cam barrel, will determine the periods when either of the two bars n and n, shall be drawn down to suspend the action of either of the two sets of harness. other two divisions of the cam barrel determine when the bars shall be liberated to permit the harness to be brought into action, and this is done by the two spring levers a3, and a, each of which carries a pin b2, which passes through the corresponding dog fw, that holds down the bar, and the depressions in these cams permits the levers to descend so that these pins may pass through sufciently far to be acted upon by a cam formed projection on the slide s, which forces the spring dogs out of, and liberates the bars.

From the foregoing anyone skilled in the art of weaving will be enabled to determine the form of the cam divisions in the cam barrel and the relations of the one to the other to determine the length of the button holes and the distance apart in the length of the web. And.it will be obvious that instead of one button hole in the Width of the fabric, two or more may be made in the same manner by increasing the number of sets of harness, as for instance, three sets But the fabric. Y f

` The ratchet hand ciof the take-up motion is connected lby a eorddz, With" a short lever e2, jointed to one of the stirrups i2, Which Y `controls the rstset ofharness thatisto be lifted up or suspended,so that While the Web Woven `on one sideof `the buttonhole the "l takeeup motion is suspended, theWeb yielding to the beat of `thelay for this purpose. But at the end ofithisfWhen the tWo sets of y harness" exchange position to Weave the Web Yon theother side `of the"1 button hole, the take- Vupmotion is setfinactiom although it may e besuspended also, and set in action When the vi .evvholekwidthof Webbing is `being Woven. It "Will be "obvious to `the experienced 'i l@ Weaver thatthe` take-up, and delivery mo- "tions may be continued in Vaction during the .e f Wholeltime of Weaving the Web `on each side Mofithebuttonhole, provided they be moved aback after Weaving `theirst side-and before fbeginning the `second side, and While Weaving the second :side the Web Woven on the `irstside yields in front "of the reedfat each beat ofthe lay.4

1 I `Wish it to beunderstood that do not "V flimit myself to thespecial.construction of )the parts` andthe arrangement of them, as these maybe greatlyfvaried by the substi- I 1 tutionf oflmechanical equivalents, but that I claim` the privilege of modifying these so long as I attain the same ends by means substantially the same. e

y What I claim as my invention and desire to secure by Letters Patent is- 1. The method of forming button holes in `the process of Weaving suspendedwebbing and other fabridslby mounting the loom With tWo or more sets of harness, each governing all the Warp threads on one side of the intended button holes, and each set being capable of being lifted and suspended,

substantially as and for the purpose set forth.

2. And I also claim, connecting each set of harness, under the before named method of Weaving fabrics With button holes, With abar or slide governed by a cam, and catch or the Vequivalent thereof, to suspend the operation of either set of harness, substantially as described.

3. And I also claim in combination with the before `described mechanism for lifting and suspending the action of the sets of harness, or any equivalent therefor, the mechanism for determining the period of the suspension of the action of the several sets of harness, or vany equivalent therefor,

substantially as and for the purpose specified.

\ x W. V. GEE.

Witnesses:

ANDREW DE LACY, WM. I-I. BISHOP.

. .Umsr PRINTED 1913.]

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