US408874A - Stop mechanism for doubling-machines - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

R. DAWSON.

STOP MECHANISM FOR DOUBLING MACHINES. No. 408,874. I Patented Aug. 13, 1889.

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No. 408,874. Patented Aug. 13, 1889.

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R. DAWSON.

STOP MECHANISM FOR DOUBLING- MACHINES.

No. 408,874. Patented Aug. 13, 1889.

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UNITED STATES PATENT OFFICE.

ROBERT DAWVSON, OF FRAMINGHAM, MASSACHUSETTS.

STOP MECHANISM FOR DOUBLlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 408,874, dated August 13, 1889.

Application filed January 19, 1889. Serial No. 296,817. (No model.)

To all whom it 77mg concern.-

Be it known that I, ROBERT DAWSON, a citizen. of the United States, residing at Framingham, in the county of Middlesex and Commonwealth of Massachusetts, have invented a new and useful Stop Mechanism for Doubling-Machines, of which the following is a specification.

My invention relates to an improvement in redoubling mechanism, in which improvement the automatic stops operate in 0011- junction with the spools from which the worsted is drawn and with the spool upon which the yarn is wound; and the objects of my improvement are, first, to provide an improved adjustable automatic stop for the winding mechanism, and, second, to secure uniformity by automatic actionin the amount of yarn wound upon the spool. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a cross-sectional view of one head of my machine in operation. Fig. 2 is a sectional view of one head not in operation, omitting an upper guide, shown in Fig. 1.

Fig. 3 is a view of the frame containing the.

spool and stop, and it shows, by omitting one arm of the yoke which supports the spool, the roll and stop, and, incidentally, one end of the arm, which, by contact with the stop, releases the weight shown in Figs. 1 and 2 and lifts the frame away from the drum, stopping the head. Fig. 4. is a sectional view of the roll, yoke, and supporting screwrod and showing the spool in elevation. Fig. 5 is a hori: zontal section on line 00 00, Fig. 2. Fig. 6 is a plan of the three spools from which the worsted is drawn, the three detectors, the spool upon which the yarn is wound, the drum, and, in general terms, of one head of the machine, omitting certain guides suffieiently shown in Fig. 1. Fig. 7 is a plan of the detectors and of the revolving shaft, which, by means of the bars surrounding it, contacts with the detector whenever, by the breaking or running out of a thread, as hereinafter described, that detector is released and drops; and Fig. 8 is a horizontal sectional view on line y y, Fig. 2.

Similar letters designate similar parts in the several drawings. w

I am familiar with the United States patents to J. Boyd, No. 236,766, January 18, 1881, and to J. and T. A. Boyd, No. 236,767, January 18, 1881, and I regard my invention as an improvement on the devices therein patented, and on other similar devices.

In my invention the motion is imparted to the various parts of the mechanism in the usual and familiar manner. The thread, however, is evenly distributed upon the spool, not by the to-and-fro or up-and-down move ment of the spool, but by the movement of the traverseguide. The thread is passed from each of the three spools A, Fig. 6, over the rod B, through the three detectors 0, Fig. 6, through the button or guide D, Fig. 1, through the traverseguide E to and upon spool F, which is revolved until said detectors 0 are raised by the tension of the thread. Then lever G, pivoted at S and attached to frame X by a strap, as shown, is depressed by hand, raising weight H,to which it is attached, as shown, so that wedge-shaped detent h thereon is caught and held up by supporting-latch I on the lower part of bar J. Bar J is pressed against weight II by spring K, which gives bar J a quick return when weight His raised. This lifting of weight l-I permits frame 'X, car- Tying spool F and adjustable stop 0, (which frame is an overbalanee pivoted at L and heretofore kept up by weight 11,) to fall by its own weight into contact with drum M. The roll 0 and its wedge 0 form in reality a section of an eccentric, and these two, in connection with an arm P, (with or without friction-rolls p at the end,) form together a rotatory trip 0 P, for a complete eccentric is merely a double rotatory wedge or a wedge wrapped around an axis. Drum M revolves from left to right, causing spool F, now in contact with it, to revolve from right to left. Traverse-guide E moves to and fro, about, over, and parallel with the center of spool F in a range of motion equal to the interior dimensions of spool F, so that the three threads passing as one through said traverse guide are drawn off evenly upon said spool F, filling it level from end to end to a fullness such as the operator may desire, in order that when this fullness is reached the stop-motion shall be operated.

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The operator adjusts the roll 0 vertically beneath the spool 11, so that when the desired fullness is reached the wedge 0 on roll 0 shall come in contact with the surface of the yarn wound upon spool 1 In order to do this, roll 0 is mounted in a yoke O, which yoke is provided with ascrew-stem 0", rigidly at tached to the base or middle arm of the yoke F, carrying roll 0, and passing through. the end of the overbalance or frame X. Two nuts N and N are engaged with this screw-stem, the one N at one end and the other N at the other end of the socket, Fig. it. By moving these nuts up and down upon the stem the height of roll 0 can be adjusted at the will of the operator, and thus the thickness of the yarn wound upon the spool is gaged beforehand. at the desired fullness for aetuatingthe stop-motion. \Vhen the yarn upon the spool 1 comes in contact with wedge 0 on roll 0, the spool I rotates roll 0 by frictional contact with wedge o and raises arm I, which is rigidly attached to said roll 0 until roll 2), Fig. 3, comes in contact with bar Q, pivoted at U. This contact lifts (Fig. 5,) the roll 1* on the other arm V of the lever against bar I and. spring K, removing supportlug-latch I and releasing weight Ii. In falling weight It raises frame X, pivoted at L, out of contact with drum M, and the machine reassumes the position shown in Fig. 2. If in operation one of the threads from spools A, Fig. (3, should break, or it the thread on one of said spools should run out, the detector through which such thread had been passing would drop and the projecting bar 2' on revolving shal't R would come into contact with said detector, pushing the upper part of bar J, carrying said detectors, toward drum M, and the lower part of bar J, which bar is pivoted at 7', against spring K, supporting-latch I would. be removed, wedge-shaped detent 71 would be released, and weight ll would drop in its ways, raising spool F from drum M and stopping the head, as described when roll 0 acts.

It will be observed that; whether the fall. of weight ll, stopping the head, is caused by the action of the lever having its fulcrum at U or by the action of the lever having its fulcruin at j the non-acting lever is moved, as if acting, by the result of the other levers action, and that identically the same mechanical result as distinguished from cause, is produced in either event.

\Vhat I claim, and desire to secure by Let ters Patentot the United States, is-

1. The combination of drum M, frame X, adapted to carry a spool and connected with the weight .lI, weight ll, provided with wedgeshaped detent 71., latch I, adapted to engage with said detent, pivoted bar J, and detectors U, with shaft R, having the small bars 0, substantially as described, and for the pur poses set forth.

2. The combination of the drum M, frame X, adapted to carry a spool, and weight II, having wedge-shaped d etent 71, with the latch I, pivoted lever Q, roll 0, provided with wedge o, tripping-arm 'I, and means for supporting roll and adjusting it up and down, substantially as described, and for the purposes set forth.

3. In the stop-motion of a doubling mechanism, the drum )1, the frame X, adapted to carry a spool, a rotatory trip 0, having wedge 0, also supported by said frame, and. means for adjusting the spool and trip to and from each other in a right line, in combination with arm I, weight ll, latch therefor, and means intermediate said arm and said latch for disengaging the latter from the weight, substantially as described, and for the purposes set forth.

ROBERT DAXVSON.

In presence o[ J'osnm-I 'B. Jonxsmv, James CONNOR.

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