US506133A - prest - Google Patents

Description

(No Moael.)

J. PR'EST. sToPL MUTIQN son ,DRAWlN-G FRAMES;

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vthe rock-shaft is mounted and part of the UNITED STATES ATnNTA OFFICE.

JOHN E. PREST, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO THE WHITIN MACHINE WORKS, OF SAME PLACE.

STOP-MOTION FOR DRAWING-FRAM ES.

SPECIFICATION forming part of Letters Patent No. 506,133, dated October 3, 1893.

Application filed il' une 7, 1893. Serial No.476,84.0. (No model.)

To all whom t may concern:

Be it known that I, JOHN E. PREST, of Whitinsville,in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Stop-Motions for Drawing-Frames; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to improvements in devices for automatically stopping the operation of the drawing-frame mechanism.

The object of the invention is to so, construct a stop-motion for drawing-frames that the same will be allowed to operate either by the lifting of the coiler, or when the sliver, passing through the trumpet and between the rolls, breaks, or bunches. f

The invention consistsin the peculiar construction of the releasing-devices and their combination with a pivoted-lever,and a governing-shaft carrying a finger adapted to be engaged by the depression of the lever to stop the motion of the shaft.v A f Figure 1 represents an end view of portions of a drawing-frame and coiler provided with my improved stop-motion. Fig. 2 represents a plan view of the same with the trumpet and delivery rolls removed and showing the manner in which the trumpet rock-shaft is connected with the evener. Fig. 3 represents a front view of the trumpet and rock-shaft with the lifting-arm shown in relation to the rider-arm, also indicating the manner in which mechanism connecting this shaft with the evener. Fig. 4 represents an enlarged detail view of the trumpet-shank, partially in vertical section, to more clearly show the construction of the same and its relation to the rockshaft.

Similar numbers of reference designate corresponding parts throughout.

In the drawings 5 indicates a portion of the drawing-frame, 6 the coiler-disk supported in the usual manner above the can, 7 the coilertube through which the sliver is delivered, 8-8 the delivery-rolls supported at the opposite ends in journal-bearings, 9 the trumpet through which the sliver passes on its way from the drawing to the delivery-rolls, 10 the shaft connected with the shipper-mechanism which is allowed to act when the rocking, or rotating, motion of this shaft is prevented, and 11 a stop-finger mounted on said shaft.

The bracket 12 is secured to the top 'of the drawing-frame and has the arm 13 extending forwardly over the coiler-disk 6 and an arm 14 extending rearwardly. To this arm 14 is pivoted the lever lhaving the hooked-end 116 adapted to engage the end of the finger 11 Y on the shaft 10 when this end of the lever is depressed, thus preventing the movement of the finger in the direction of the arrow and allowing `the shipper-mechanism to operate; the forward extension of the lever 15 has an enlarged end 17 which is overbalanced by the rear end. v

. To assist in depressing the forward end of the lever 15, under normal conditions, I use an arm 18 pivoted at its forward end to the corresponding end of` the bracket-arm 13, while the rear end of this arm 18 rests on the enlarged end of the lever, the forward portion of the arm 18 being furnished witha rider 19 which rests on the iiange 7 of the coiler.

The shank of the trumpet 9 is mounted in a socket 20 having a lower reduced-portion 20', which is pivoted between the lugs 21 of the rock-shaft 21.V The lower end of vthis reduced portion is beveled and is supported by the pivots slightlyabove a correspondingly beveled portion of the shaft 2l between the lugs 21, so that when VVthe upper portion of the socket 2O is moved forward "a slight distance the front of the beveled portion will come in contact with the beveled portion of the shaft and will be stopped from further movement in this direction, while sufficient clearance is thus given to the rear of this beveled end of the reduced portion to allow of its free forward movement and the corresponding backward movement of the socket 20.

ExtendingV rearwardly from the socket 2O or from the reduced-portion 20', is a counterbalance weight 22 tending to rock thesocket 20 and the trumpet in that direction. On the forward portion of thefreduced-portion 20 is mounted the stop 23, and adjacent thereto the stud, or bracket, 24 is secured to the shaft. On this bracket is pivoted the arm 25 supported on the stop 23 and extending parallel to the shaft, its :free end being located beneath the pivoted-arm 18. The ends of the shaft 21 are furnished with axial depressions in which the conical ends of the pivot pins 26-26 engage, these pivot pins being mounted in brackets extending from the machine frame. On one end of the shaft 21 is rigidly secured the bent lever-arm 27 provided with weights on its lower extension. this extension is furnished with a verticallyslotted portion 28 in which a bolt, or stud on the connecting-rod 29, is secured; the connecting-rod connects with the evener and by these the rotation or rocking of the shaft 21', under normal conditions, is prevented, while the stop-motion mechanism may be operated by the independent rocking of the trumpet.`

18 the rear end of `the lever 15 will be allowed to drop and to engage the finger 11 to stop the movement of the shaft 10. This result will be attained by theraising of thecoiler when the can is full, the arm 18 being lifted by the rider 19 and the coi1er-iange,and secondlyby the breaking of the sliver passing through the trumpet interrupting the tension on the trumpet and allowing the weight 22 to rock the socket 20 and the-trumpet backward, causing the arm 18 to be lifted by the arm 25,-01 thirdly by the bunching' of the sliver between the trumpet and the de.-

livery-rolls which interrupts the tension on z the trumpet and also forces the same backward as the bunch increases in size.

Having thus described my invention, I=

The end of t It will be obvious that by the liftingof the arm combination with the shi pper-mechanism governing-shaftLa finger mounted thereon, a pivoted-lever overweighted at its rear portion and adapted to engage said finger to stop the movement of said shaft, and a pivoted-arm having a rider and bearing on the forward end of the lever to depress the same, of a counter-weighted rocking-support, a trumpet mounted thereon, and a device operated by the rocking-support for elevating the rider-arm, as described.

3. In a stop-motion for drawing-frames, the combination with the shipper-mechanism governing-shaft, a iinger mounted thereon, the bracket l2 having the arms 13 and 14, the lever'l pivoted to the arm 14, the rearwardlyextending arm 18 pivoted to the bracket-arm 14 and having the rider 19, and the coilertube '7 on the upper end of which the rider 19 bears, of the shaft 2l having "the lugs 2l and the bracket 24,1the'trumpet shank'20 pivoted between said lugs and having the-counter-weight 22 and the stop 23, the 'trumpet mounted on the shank, and the arm 25 pivoted to the bracket 24 and Vextending beneath the arm 18, as described.

4. Ina stop-motion for drawing-frames, the

combination with a rock-shaft journaled in the bracket and extending over the lifter-arm,

a pivoted-lever, vhavingan engaging-device at its rear overweighted end, on the'forward end of which the rider-arm rests, the shippermechanism governing shaft, and a finger mounted on said shaft and adapted to be en gaged by the overweighted lever, as described.y

In witness whereof I have hereunto set my hand.

JOHN E. PREST. Witnesses:

HENRY J. MILLER, JosErH A.` MILLER.

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