US386352A - Roving-machine - Google Patents

Description

Patented July 17, 1888.

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A. E. RHOADES.

ROVING MAGHINE.

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, tween the shafts actuating the fliers and the Nrran STATES ATENT Erica.

ALONZO E. RHOADES, OF MILFORD, MASSACHUSETTS, ASSIGNOR TO THE HOPEDALE MACHINE COMPANY, OF HOPEDALE, MASSACHUSETTS.

ROVING-MACHINE.

SPECIFICATION forming part of Letters Application filed August Q3, 1587.

To all whom it may concern:

Be it known that I, ALONZO E. Raon-inns, of Milford, county of Vorcester, and State of Massachusetts, have invented an Improvement in RovingMachines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

In the production of roving on roving-niachines using iers the roving is frequently stretched and weakened by starting or stopping the dier before the bobbin, this being due to what is known as backlash In roving-machincs using a flier, the class of machine upon which the present invention is an improvement, the fliers are usually rotated at a uniform speed, while the bobbins, when they begin to receive yarn, run at a slowerA speed, their speed being gradually increased as the bobbinsare filled; but the speed attained by the bobbins does not equal that of the fliers. So, also, in this class of machine the iiiers are driven from the Hier-driving shaft, whereas the bobbins are driven from a bobbindriving shaft set in motion by the dier-driving shaft and intermediate gearing, and as a result the backlash is different in degree, being perceptible most at the bobbin.

In my experiments to increase the speed of rovinglnachines I discovered that means must be provided to overcome this backlash and the resultant stretching of the roving or yarn between the flier and bobbin, as the ier starts first; and to over come this objection and insure the starting of the flier and bobbin together I have interposed a friction device bebobbins, the said friction device, as herein shown, consisting of two plates pressed together in a yielding manner, the said plates being driven positively, one from the flier-actuating shaft and the other from the bobbinactuating shaft, the speed of the disks or plates of the friction device varying relatively the one to the other as the difference in the speed of the fliers and bobbins.

My invention consists, essentially, in the combination, with the flier and bobbin actuating shafts, of an intermediate friction device and gearing to actuate the same, whereby the Said bobbin and flier actuating shafts are al- Patent No. 386,352, dated July 17, 1888.

Serial No. 247.646. (No model.)

ways stopped and started at the same instant, as will be described.'

Figure l in front elevation shows a sufficient portion of a roving machine embodying my invention to enable my improvements to be understood. Fig. 2 is a section of Fig. l in the line x x, looking toward the left. Fig. 3 is an enlarged detail of the friction device and the gearing connected therewith to the left of the 6o dotted line x 0J', Fig. l, one half of one of the plates of the friet-ion device being broken out to show the other half of the friction device of the same size behind it; and Fig. 4 is a section of Fig. 3 in the dotted line x".

The frame-work A, of proper shape to sustain the working parts, has a driving-shaft, a, provided with usual fast and loose pulleys.

As herein shown, the shaft a has a pinion, a, which engages a toothed gear, a2, fast on 7o the flier-actuating shaft a, it having a suitable number of beveled gears, as of, which engage each a beveled gear, as a, on the tubular neck of the flier a, the said neck taking its bearing in the rail al, while the nose ofthe iiier takes its bearing in a suitable rail, a,

The dier-driving shaft a has fast upon it one pulley, b, of a pair of cone-pulleys, the` second cone-pulley, as b', being fast upon ashortshaft, as b2, having toothed gear bi", which engagesa 8o pinion, b", fast on the bobbin-driving shaft b5, it having one or more beveled gears, as b, which engage each a beveled gear, as bl, on and adapted to rotate the spindle b3, which in usual nianner drives the bobbinb, upon which is to be wound the yarn issuing from the presser b1 of the flier.

The belt c, passed about the cone-pulleys I) b, is shifted at the proper times by a beltshipper, c', so as to vary as may be desired the 9o relative speeds of the two shafts a3 b5.

I do not desire to limit my invention to the eXact devices shown for driving the iiier and bobbin actuating shafts, as instead they may be driven by any usual devices commonly employed in roving-frames.

The particular manner of driving the said bobbin-driving shaft is immaterial, as it may be driven from the flier-driving shaft through a compound motion, as it is called, as com- IOO monly done in cotton-mills.

The flier-actuating shaft as has fast upon it a toothed gear, d, (see Fig. 3,) which engages a toothed gear, d', on a shaft, d2, he-ld within and directly at the rear of the shaft a3, the said shaft cl2 having secured to ita pinion, d3, which engages the toothed periphery d* of the plate or disk d5, constituting one half of the friction device, the other half being a plate or disk, e, the contacting surfaces of the said plates or disks being preferably beveled to lit one into the other, as best shown in Fig. 4. y

The disk or plate d5 and its toothed surfaces d* constitute, preferably, an integral part of a hub, j", mounted loosely upon a sleeve, (Z7, in turn mounted loosely upon a stud, ds, connected to a part of the frame-work by a suitable nut, d. Aspiral spring placed upon the sleeve Z7 and controlled by a nut,` f2; screwed upon a short part of the-said sleeve di, causes the vfriction plate or disk d5 to be pressed with more or less force against the surface of the friction plate or disk e.

The bobbin-driving shaft b5 has fast upon it a toothed gear, e', which in turn engages a toothed gear, et', fast upon a shaft, e3, parallel with and directly back of the shaft b5, the said shaft e:i having fast upon it a toothed pin. ion, ewhich engages the toothed portion e5 of the disk or plate e, (see Fig. 3,) where the disk or plate d5 is broken away to show the disk or plate e, which is of the same diameter, behind it. The disk or plate e and its toothed portion e5 form part of a hub, e, which also runs loose on the sleeve (Z7.

As described, it will be understood thatthe disk or plate d5 is driven positively from the flier-actuating shaft, while the disk or plate e is driven positively from the bobbin-actuating shaft, each disk being driven at `a speed corresponding with the said shafts.

rlhe disks or plates, being pressed together as described, constitute a friction device or clutch which effectually does away with all backlash referred to, and insures not only tervention of toothed gearing alone there is and must be between the teeth a certain amount of looseness, which constitutesbacklash, the backlash being increased as the number of gears are increased; but by interposing a friction device, as herein provided for, between the dier-driving shaft and the bobbindriving shaft, both of the said shafts start and stop together, yet the friction between the friction-plates is not so great but that one of the plates slips on or with relation to the other as the relative speed of the two shafts a3 b5 is ,gradually changed by shifting the belt upon the cone-pulleys.

I claim- The flier-driving shaft and bobbin-driving shaft of a roving-machine, combined with a friction device and with means to automatically actuate the different portions of the said friction device from the said shafts, whereby vthe rotation ofthe said shafts is stopped and started at the same instant of time, thus avoiding backlash.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

ALGNZO E. RHOADES.

Witnesses:

E. D. BANCROFT, H. LAWRENCE.

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