US90508A - Improvement in machine for making tatting - Google Patents

Description

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Letters Patent No. 99,508, dated May 25, 1869.

IMPROVEMENT IN.MACHINE FOR MAKING TATTING.

The Schedule referredto in these Letters Patent and making part of the same.

To all 'whom it may concern Be it known that I, C. 0. CROSBY, of New Haven, in the county of New Haven, and State of Connecticnt, have invented a new Machine for Making Tatting; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute a part of this specification, and represent in Figure 1, a side View;

Figure 2, a top view;

Figure 3, a front-end View;

Figures 4, 5, and 6, detached sectional views, to 'illustrate the operation of the machine;

Figures 7 and 8, top and side views of the needle enlarged;

Figures 9 and 10, top and side views of the looper enlarged; and in Y Figures 11 and 12, the fabric in the different stages of its formation.

This invention relates to a machine for making looped or knotted trimming, commonly called tatting, and especially the tatting for which I received Let-ters Patent, November' 3, 1868, and the construction of which is theiein fully described, and also hereinafter referred to.; and

The invention consists in t-he arrangement of automatic mechanism for looping or knotting the filling thread around the proper warp-threads, and combined with other mechanism, which at the proper time introduces or removes, as the case may be, the other warp-thread, all operating as an automatic machine.

\ To enable others to construct and use my improvement, I will proceed to describe the same, as illustrated in the accompanying drawings.

A is the bed-platefresting on legs, B, or supported in any convenient manner, and supporting; in proper bearings, C, the driving-shaft D, which is caused to revolve by the application of power thereto, in any convenient manner, the said shaft communicating power to a shaft, D, at right angles to the. said shaft D, supported in like bearings, O.

E is the needle-bar, carrying, in its inner. end, the needle a, and supported in proper guides, the said guide provided with trunnions, which rest in bearings E, so as to allow of a vibratory movement of the needle-bar.

The needle-bar, moving freely in `the guide E, is attached, by a' connecting-rod, E, to a lever, Ei, which said lever E4 is fixed to a shaft, D3, supported in bearings, C3, and to which said shaft a rocking movement is given by a rod, F, connecting the lever 1*" with an eccentric, or cam, F2, on thel shaft D', a revolution of the said eccentric F on the shaft Dl forcin g the necdlebar back, as seen in fig. 4, and the reaction ofthe spring attached to the proper point, returning the needle-bar, as seen in fig. 5, which gives to the needle the back-and-orward movement similar to that in common sewing-machines.

Another movement, for the purpose more fully hereafter described, is required, and for which the guide E is hung upon' trnnuions, that is, to raise the needle from the position in iig. 4 to that in iig. 5, and return. For this purpose, a third shaft, Di, resting in bearings G2, is employed, and to which power is communicated from the shait D, by a train of gears, as seen in figs. l and 2, so as to impart to the said shaft- D2 the required number of revolutions relatively to the movement of the needle, the proportion being as more fully hereafter shown.

Upon the said shaft D2 is arranged a cam, B, and from the needle-bar guide. El extends an arm, B2,

'which rests upon the 'sald'cam B, more clearly seen in figsr 4 and 5.

Starting from the position in iig. 5, when the needle is at its highest point, the cam B revolving gradually, drops the point of the needle until it assumes the position shown in fig. 4, where the fall-off is sudden, so that the needle instantly returns to the position shown in fig. 5.

Opposite the needle is arranged the hook, or looper d, in a lever, G, the said lever G heilig pivoted in hearings G, and the said bearing arranged so as to permit the lever being turned to the right or left, and also so as to be raised.

The said lever extends back, to be operated by a cam, G2, on the shaft D, as in fig. 1, the said cam being formed soas to give the necessary up-anddown movement to the looper, and, at the same time, by a projection, g, upon its side, a lateral vibratory movement.

A gradual depression of the looper-lever G, corresponding to the depression of the needle, is given, by means ot'a cam, B3, on the shaft D2, through a lever, G3, pivoted at g', the other arm of which said lever G3 is, in connection with the bearing G of the lever G, so that, as the cam 1?3 (which corresponds to the cam B) revolves, the depression and sudden rising of the looper will correspond tthe same movement of the needle.

Thus arranged in proper relative position to each other, a thread passing through the eye of the needle is caught by the looper, and the chain-stitch, or loop thereby formed in the usual manner.

I will now proceed to describe the warp, or'interlacing threads.

Ilarrange in bearings, H H, several bars, f, It, and l, more or less, corresponding to the number of warptlneads to be employed, (here-represented as three.)

Two or more of the said bars extend back, so as to be moved back and forth in their bearings by means of cams, I and I, on the shaft D, as seen in figs. 2 and 6.

From each of the said bars f, h, and Z, extend up, respectively, thread-guides 1, 2, and 3, having an eye formed in their upper end, through each of which one of the threads passes, the threads being denoted, re-' spectively, in blue, red, and brokenV black.

Above the said thread-guides, and in 4proper relative position thereto, and to the needle and looper, a grasping and clamping-device is arranged, consisting of a pair of jaws, L, one of which is fixed to a stationary bar, L, and the other pivoted to the said bar L at Z, and the said pivoted jaw is moved to be opened from the fixed jaw, by means of a sliding bar, L, operating against the arm ofthe said pivoted jaw, the said bar L2 being operated by a cam, Li, on the shaft D, through a lever, L5, and a cam, L, on the shaft D2, through a lever, LG, in the following inanner: n

open instantly, and this time occurs at the point where the needle rises, as before described, and for the purpose more fully hereafter shown; and to accomplish this, I construct the cam L* with a sudden fall-olii', or notch, 4, as seen in fig. 2, and so that when the said notch arrives at the required point, the lever L falls therein, a spring, m, on the bar L2,

forcing the lever into the said notch, consequently instantly opening the jaws, as denoted in red, iig. 6.

When thus opened by the action of the spring, the cam L, through the lever L5, operating in the opposite direction, and moving more rapidly than the cam L3, returns the lbar L2, and withdraws the lever L from thenotch in the cam L3, and closes the jaws.

The several warp-threzuls being secured in the jaws, and the threads held in the position denoted in iig. 6, the needle passes' between the two threads 4 and 5, the two threads being interlace'd to the right and left of the needle at each operation, so that these two threads are interwoven and secured together b`y successive stitches, or knots formed by the needlethread.

When the requisite number of stitches, say three, as denoted in diagram, tig. 11, has been formed upon the two threads 4 and 5, then the thread 4 isy removed out of the way of the needle, and its movement stopped, and this operation is pertbrm'ed by the operation of the bar'l, which carries the said thread 4, and which is as follows:

The said barl is independent of the cam on the shaitD, but has arranged upon ita latch-lever, N, which said latch-lever rests upon one arm of a level', N (see lig. 3,) and the said lever' N', pivoted at n, extends beneath a cam, N2, on `the slow shaft D'`, the said cam operating, at the required time, to raise the latch-lever N into connection with the bar h, so as to move therewith; or, the lever N l dropping, the latch-lever N disconnects the bar Z from the har It, and when so disconnected, the bar l liies back, so as to carry its thread into the position denoted by the broken blue line, fig. 11; thenvthe needle loops its thread around the thread 5 alternately, iirst to one side, and then the other, until thc requisite number of stitches, say four, is formed thereon; then the other thread, (j, is brought into position in connection with the thread 5, and, in like manner, these two threads are knotted, or looped together, by the passage Aof the needle-thread therethrough, until the requisite number of stitches, or knots is formed, say eight.; then the thread 6 is withdrawn,'aud Athethread 5 again left alone, until the salire number of stitches (four) is again formed thereon; then the thread 4 is again brought into connection with the thread 5, and the same number of stitches as before (three) is formed on th-se two threads. 'lhus twenty-two stitches in all have been produced, or nineteen without the last three, which are a repetition of those rst produced.

Atthe proper time, it ris necessary that the jaws to the shaft DI is, that the shaft 1)2 makes one revolution to this number of stitches formed by the needle, that is, in this case, nineteen revolutions of the shaft Dl to one revolution of the shaft Di.

At this point, the needleI and looper have arrived at their lowest position, and while the needle is between the threads L and 5, the cams B have arrived at the position of the fall-off, and instantly the needle rises, beating up the stitches formed, to produce the figure denotedin fig. 12, then commencing again, nineteen stitches are again formed as before. and a second ligure produced, and so continuing.

In order to beat up with the needle, as described, in the most perfect manner, I combine with the needle a linger, that answers the purpose of a reed, and the needle and reed are combined, as seen in iigs..7 and S.

At a little distance back from the edge, I form a slot, as seen at l2, lig, 7, so that, as the needle passes on to-thewaps, the` warpspass into thi's slot, and the two sides serve, as the reed in the common loom, to beat` up the work, and produce the 'gures, as before described. K

A top view of the needle is seen in iig. 7, and a side view in iig. 8.

In operating the looper, it is necessary that the loop be held firmly by it, and also that it be raised a little, in order to draw up the knot previously tied, the necessary movement being given by the cams, as before described; but in order that the looper.may securely hold the thread, I construct it as -seen in figs. 9 and 10, forming a notch, 13, upon the hook, as seen in fig. l0, into which notch the loop catches, so as to be raised with the hook, and, by the raising of the hook, to draw up the last knot, or loop made; and this notch is so formed, that when the loop is slacked, it will readily slip out from the notch, and o" from the hook, so that the hook will catch the next loop.

It will be evident, that by a different arrangement of thc chainof gears between the shaft D and shaft DZ, and changing the form of the cam N2, (which at the proper time introduces the warp-threads,) different ligure/s may be produced, as fully shown in the application for patent for the article heretofore referred to.

The several warp-threads pass through or over a feeding-roll, respectively, P R S, on a shaft, P R S, on the outer Aend of `which are arranged ratchetwheels p r s, operated by cams P2 R2 S2, on the shaft D2, the said cams being formed so that, at the proper time, the pawls t u w, iig. 3, will be operated to turn the feed to supply the requisite quantity of thread.

|Il he adjustment of the several parts, as shown, is common for this class of machinery, and, for those skilled in the art, 'requires no further explanation.

Having thus fully described my invention,

What I claim as new and useful, and desire to secure'by Letters Patent, is

1. In a machine for making tatting, the eye-pointed needle, when-provided with a reed-finger, and operating substantially as and for the purpose set forth.

2. The hook, or looper, constructed as described, with the notch I3 at its base, so as to operate in the manner specified.

3. The combination -ofv the needle and looper, both constructed as described, and operating together, substantially as set forth.

4. The 'needle-operating devices, arranged and op- 'eratig as described, so that the needle may be gradually depressed, and at the proper time be operated to beat up, substantially as and for the purpose hereinl set forth. In combination with a. needle and hook, operating in the manner described, the jaws L, arranged and operated as specified, so as to grasp and hold the work, substantially as set forth.

6. Inl combination with the needle and hook, operating as described, the warp-thread carriers 1, 2, 3, more or less in number, and arranged so as to present the proper threads at the required instant, substantiallly as and for the purpose specified.

7. In combination with the needle and hook, opernt-ing as described, the arrangement of mechanism for letting o the warp-threads as required, substan- 'ei-ally as and for the purpose set forth.

C. O. CRUSBY.

Witnesses J. H. SHUMWAY, A. J. TIBBITs.

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