US821590A - Stop-motion for sliver lap-machines. - Google Patents

Description

No. 821,590 PATBNTED MAY 22, 1906.

W. HENRY.

STOP MOTION FOR SLIVER LAP MACHINES.

APPLICATION FILED APR.13,1905.

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STOP MOTION FOR SLIVER LAP MACHINES.

APPLICATION FILED APR.13.1905.

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WILLIAM HENRY, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO STODDARD, HASERIOK, RICHARDS & COMPANY, OF BOSTON, MAS- SACHUSETTS, A FIRM.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed April 13, 1905. Serial No. 255,418.

To all whom it may concern:

Be it known that I, WILLIAM HENRY, a citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Stop-Motion for Sliver Lap-Machines, of which the following is a specification.

A stop-motion operated. by the breaking of the sliver before it reaches the drawing-rolls is now in use.

My improvement comprises a means by which the machine is stopped when the sliver has wound up on the top or bottom roll, as often happens if a break has occurred in the sliver after it has passed through the rolls. In such a case the top roll is lifted more or less by the accumulation of the sliver, and I utilize this lifting of the roll (preferably in the manner below described) as the means whereby the machine is stopped.

My invention will be understood by reference to the drawings, in which Figure 1 is a sectional view of a sliver lapmachine of well-known construction to which my invention has been applied. Fig. 2 is a section on line 2 2 of Fig. 1. Fig. 3 is a sectional detail, and Fig. 4 is a section on line 4 4 of Fig. 1.

In all the views certain of the parts which are unnecessary to the operation of my improvement are omitted, and in the following description only such parts will be referred to as seem essential thereto. The frame of the machine is indicated at A. i

B is a can from which a sliver b is drawn through an opening in the back guide-plate C over the spoon-lever D and between the drawing-rolls, four pairs of which are shown, the last rolls in series being lettered E E. From drawingrolls the sliver is led off to the calendar-rolls and the wooden core .in the usual manner. It will of course be understood that in this class of machines possibly as many as eighteen slivers may pass through the machine at one time, the machine being provided with as many spoon-levers as there are slivers.

The spoon-levers serve as part of a sto motion in case the sliver breaks between t e can and the drawing-rolls. The other member comprises the spoon-shaft (1, having wings d, which engage with the toe of any spoonlever which is not drawn out of the way by the draft of the sliver, as will be understood by those skilled in the art. The spoon-shaft has a clutch at one end comprising a serrated hub d fast on the shaft and engaging with a corresponding serrated hub on the gear d".

This gear is rotated by suitable connectionswith the power-shaft and moves laterally on the spoon-shaft and is held in contact with the hub (l by a spring. (Not shown.) A rock-shaft d hung in brackets on the frame A, carries two arms of and (Z one of which, (1, has a pin 01, which causes the belt-shipper to be thrown in the following manner: The belt-shipper F is mounted on the rod f, which is connected by crossbarsf with the rod f Both of these rods move in bearings on the frame A. The rod f 2 carries a collar f and a spring f, located between this collar f" and the bearing f tends to'throw the rods f and f toward the loose pulley F causing the shipper F to move the belt from the drivingpulley F to the loose pulley F This action is prevented, however, by the engagement of a shoulder f on the latch f carried by the arm f on the rod f with a coacting edge f 9 on the frame. (See Fig. 2.) The free end of the latch f 7 normally rests on the pin d projecting from the arm d I/Vhen, therefore, the gear d is slid along the'shaft d by the stopping of its rotation, it operates the rook shaft (Z and arms d 61 thus disengaging the shoulder f of the latch f 7 from its coacting edge and allowing the spring f to throw the belt by means of the shipper from the fast to the loose pulley.

My invention, as hereinafter described, acts by a similar engagement with and stoppage of the spoon-shaft, as that is the simplest way I now know of utilizing it. As so embodied it consists of a pawl-lever G, so located and hung in a bracket 9 on the frame A as to be within reach of the Wings (1 on the spoon-shaft, so that at the proper time it may positively engage one of the wings and stop the rotation of spoonshaft, and hence throw the shipper in the way above described. For this purpose a rod h is connected at one end with the pawl-lever G, its other end sliding in an opening in a slotted lug j, adjustably attached through its slot to the bracket g A collar 9 limits the sliding movement of the rod 72. The rod it rests upon a cross-bar g, which rests in the lower hooks of the stirrups e, hung upon the upper roll E. These hooks also support the usual weights E It will be seen that should the roll E be lifted because of the winding of the sliver (see Fig. 4) it will lift one or both of its stirrups e, and hence lift the rod h and throw the pawl-leverG into the position shown in Fig. 3, when it will be engaged by one of the wings cl of the spoon-shaft and will stop its revolution and cause the sh pping of the belt and stopping of the machine.

It wlllbe noted that the pawl is so arranged that it and the rod h, which operates it, serve as a toggle, so that the lifting of the stirrups will move the pawl into position at right angles to the face. of the wing on the spoonshaft. As a result it is practically impossible for the pawl to be forced off from the spoon-shaft, no matter how much power is used to rotate the spoon-shaft, the end of the pawl being also preferably shaped to make this engagement more sure. In this respect my invention differs practically from any structure in which a hook is caused to hook over a wing of the spoon-shaft, for in this latter case the wear of the parts would shortly render the hook ineffective to act as a stop, whereas in my construction wear will have but little effect.

As the sliver is not apt to wind upon any other than one of the last rolls, I have only shown the application of my invention thereto but it may be duplicated for the other rolls, if thought best. Moreover, I do not mean to limit my invention to the means shown, for so far as I am aware the top roll of a sliver lap-machine has never been connected with a stop-motion before my invention, and other means for connecting the top roll with the shipper for the purpose described will doubtless occur to those skilled in the art as the result of my disclosure. Nor is my invention limited to a sliver lap-machine alone, for it may be embodied in other textile machines having a free top roll.

What I claim as my invention is 1. In a machine of the kind described, a

drawing-frame comprising top and bottom rolls, a spoon-shaft, a pawl pivotally mounted on the frame of the machine and movable into the path of one of the wings of said shaft and when so moved lying in a line at right angles to the face of said wing, whereby such wing may abut against the end of saidpawl and means operated by the lifting of a top roll to move said pawl as described.

2. In a maclrine of the kind described, a drawing-frame comprising top and bottom rolls, a spoon-shaft, a-pawl pivotally mounted on the frame of the machine and adapted to engage with one of the wings of sa d spoonshaft, and means operated by the lifting of a top roll, whereby said pawl will be brought into engagement with such wing and in a line at right angles to the'face thereof.

3. In a machine of the k nd described, a drawfng-frame comprising top and bottom rolls, a spoon-shaft, a pawl mounted on the machneframe, a pair of stirrups connected with one of said top rolls, a cross-bar connected by said stirrups, and means engaging said cross-bar and connected with said pawllever to form therewith a toggle, whereby the lifting of the stirrups will cause said pawl to move into the path of one of the wings of said spoon-shaft and into position at right angles to the face of said wing and abut with its end against such wing, as and for the purposes described.

4:. In a machine of the kind described, a drawing-frame comprising top and bottom rolls, a spoon-shaft, a pawl mounted on the frame of the machine and adapted to be thrown into engagement with said spoonshaft, the end of said pawl being shaped as shown in order that pressure of a wing on said spoon-shaft against said pawl wf ll tend to prevent the disengagement of said pawl and spoon-shaft, and means operated by the l-fting of a top roll, whereby the engagement of the pawl and spoon-shaft Will be primarily caused.

WVILLIAM HENRY. In presence of JosEPH I. DE TERRA, BRADDOOK B. HATHAWAY.

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