US483809A - Rolls for doubling and twisting machines - Google Patents

Description

(No Model.) 2 SheetsSheet 1.-

J. N. LEONARD.

ROLLS FOR DOUBLING AND TWISTING MACHINES.

No. 483,809. Patented Oct. 4, 1 892.

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J. N. LEONARD.

ROLLS FOR DOUBLING AND TWISTING MACHINES.

No. 483,809 Patented O0t:4, 1892.

UNITED STATES PATENT OFFICE.

JOHN N. LEONARD, OF NORTHAMPTON, MASSACHUSETTS.

ROLLS FOR DOUBLING AND TWISTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 483,809, dated October 4, 1892.

Application filed November 19, 1891. Serial No. 412,416. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN N. LEONARD, residing atNorthampton,in the county of Ham pshire and State of Massachusetts, have invented certain new and useful Improvements in Rolls for Doubling and Twisting Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to doubling and twist ing threads or silk, and especially to the rolls used therefor.

The object of the invention is to so improve the machine for doubling and twisting fibers, and especially silk, that there will be little or no tendency for the threads or fibers to catch and break near the drawing and evening rolls.

Ina specification filed of even date herewith, to which reference is made, I have described in a general way the method now pursued of conveying threads from the spools to the cop, past the drawingand evening rolls, and certain improvements I have made therein. My present improvement is a modification thereof and the same general description applies hereto, this improvement being applicable to the same class of machines.

In the drawings, Figure l is a side elevation of my improved rolls and support, showing the course of the cord around the same. Fig. 1 is a detail of a modification. Fig. 2 is a top plan of the same. Fig. 3 is a diagrammatic detail showing the direction of the cord or thread around the roll. Fig. 4 is an end elevation, partly in section, of so much of a spinningframe as is necessary to illustrate my invention.

Referring to the drawings, A denotes a bracket or support of any usual construction connected to the main frame of the machine. The lever B is pivoted in this bracket and is so connected to the stop device as to swing slightly on its pivot when any thread breaks, as is common in this art, especially in the well-known Morrison machine. The lever B has a fixed pivot or pintle O, which serves as an axle for grooved roll D, the roll being held on its axle by a screw E, entering the end of the axle or in any other suitable manner. A second lever F is hung to the end of lever b by a suitable pivot or hinge, so

that lever F may have a slight swing upward with reference to its supporting-lever B; but preferably the joint will be rigid as against a downward movement. The lever F has a fixed pintle G, which forms the axis for a second grooved roller H, the axes of the two rolls be ing parallel and their cylindrical faces being also parallel. The roll H may be held on its shaft or pintle by a screw head K.

As the rollers D and H are supported on axes fixed at one end only to their support- *ing-levers, the ends of these rolls away from the levers are easily accessible, so that threads or cords can be readily carried round both rolls.

The rolls D and H are hung a little above a driving roll M, which roll is fixed to a shaft N, extending from end to end of the machine. The roll M is something like a spool in form, having rings or flanges M M at its ends and being of reduced diameter between said ends.

The rollers D and II have rings D D and H H, aligning with the rings on the driving roll and in position to rest thereon when held down by gravity, so that the rolls D and H shall be driven directly as by friction from the driving-roll.

The faces of the rolls D and II between the rings referred to are provided with grooves d d and 71 h, as many in number as desirable.

In cording up the rolls the cord or cords P, extending from a number of spools and through suitable stop devices, will be carried under roller D, resting in a groove 61, and thence under roller H, resting in the corresponding groove h. Thence the cord is carried back over the top of both rollers and again under the bottom of both, the separate turns of the cord each resting in a groove in each wheel. Having passed the desired number of times around both rollers, the cord is passed in the direction of the thread T toward the spindle or cop. It is not very ma terial which roller the thread leaves to go toward the cop. It is shown as passing away from the driving-roll after leaving roller D. As the connection between levers B and F is jointed or yielding, the roller H will adjust itself to the surface of driving-roll M when dropped. The joint S may be so constructed, however, that the roller II will not be permitted to drop onto the driving-roll by a mere change of the angle of the bearing-surfaces, as shown in Fig. l, in which case it will run as an idler and be rotated by the friction of the thread or cord P, passing around it from the driven roll D. Of course either one of the rolls D H may be the idler.

The diagram Fig. 3 shows the general direction of the cord or thread around the two rollers, and so toward the spindle.

The levers B and F constitute the frame to support the rolls D and H, and both these rolls can be lifted with the frame Without moving the drivingroll.

What I claim is 1. The jointed frame having a spindle connected to each part thereof, the grooved roll on each spindle, and a driving-roll engaging one of the grooved rolls, in combination, sub

In testimony whereof I affix my signature in presence of two witnesses.

. JOHN N. LEONARD.

Witnesses:

S. BRAsHEARs, W. A. BARTLETT.

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