US1659483A - Machine for spinning artificial silk - Google Patents

Description

2 Sheets-Sheet llllllHl Filed June 11.

G. DONAGEMMA ET AL MACHINE FOR SPINNING ARTIFICIAL SILK Feb. 14, 1928.

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G. DONAGEMMA ET AL MACHINE FOR SPINNING ARTIFICIAL SILK 2 Sheets-Sheet 2 Filed June 11. 1924 A QM 5 M v mu mwm an W W m MM Y ME 5 Patented Feb. 14, 1928.

UNITED STATES PATENT OFFICE- GIUSEPPE DONAGEMMA, PIETRO TOLINI, AND MELCHIORRE VALENTINI, OF MILAN,

AND ERCOLE MIGOZZI, OF ROME, ITALY.

MACHINE FOR SPINNING ARTIFICIAL SILK.

Application filed June 11, 1924, Serial No. 719,446, and in Italy June 11, 1923.

This invention relates to improvements in machines for manufacturing or spinning artificial silk or similar thread, and it consists of the constructions, combinations and arrangements herein described and claimed.

An object of the invention is to provide a frame which carries a pair of bobbins intended to occupy positions 'one above the other in the vertical plane while thread is being wound upon one of the bobbins, said frame being revoluble so that the unfilled bobbin can be brought into the position of the filled bobbin, there being a brake for holding the filled bobbin so that the thread starts upon the unfilled bobbin according to a peculiar action described in detail below.

Another object of the invention resides in the novel disposition of the thread distribution apparatus.

Another object of the invention is to so dispose the machines and produce a circulation of air that the harmful gases are carried away from, each of the machines, thereby avoiding detrimental effects upon the health of the workmen.

A further object of the invention is to provide an improvement in the system of arrival and discharge of the various basins, thereby insuring ahomogeneous mixture and a uniformity of temperature of the baths. W

Other objects and advantages appear in the following specification, reference being had to the accompanying drawing, in which Figure 1 is a front elevation (largely diagrammatic) of a portion ofa spinning machine embodying the improvements, a portion being shown in section.

Figure 2 is an end elevation of the ma- 0 chine.

Figure 3 is a diagram illustrating th {,node of winding the thread upon the bobins.

In carrying out the invention provision is made of a support 6 .which is fixed in any appropriate manner upon the machine frame generally designated a. It is to be noted in Figure 1 that a number of the supports b are shown, but inasmuch as each of these as well, as the mechanism carried thereby are of identical construction, the description of one will suffice for all. e

A locking device a, mounted upon the fixed support I) (Fig. 2) serves the purpose of holding the uppermost bobbin from rotation. The locking device is composed of a Each of the bobbin shafts c has a worm pinion f. The worm pinions are successively engageable with the worm gear g. The worm gear is continuously revoluble by the gear connections w (Fig. 2) which derive motion from the main drive shaft 00 (Fig. 1). The frame 6 is capable of being turned around on its stud d to engage first one then the other of the pinions f with the worm gear 9 and when the latter engagement occurs, driving motion is imparted to the corresponding-shaft e and the bobbin 1) carried thereby.

The then uppermost shaft and bobbin are held stationary by the application of the lever c and its inner end member to the pinion or some other appropriate part.

Apparatus for distributing the threads over the lower and active bobbin '2) comprises a rod h with a guide or feeder 2' through which the thread passes from the drawing plate r. Reciprocatory or to and fro motion of the rod it occurs by the action of any appropriate means, for example the rocking action of a pivoted lever 70 (Fig. 1) which is actuated by a cam Z. The foregoing distributing apparatus is known as the Z apparatus (Grant crossing).

Provision is made for the aspiration of the gases arising at the two acid basins shown in Figure 2. conduit m disposed in proximity to the 'lower basin (Fig. 2) has a plurality of openings, windows or slotss (Fig. 1) at which the gas enters to be discharged into the common collector n. Suction is created in the collector by any appropriate means, a receiver introducing the gas of the upper basin to the collector by way of the pipe p. c h

Situated in the lower part of the machine is a conduit 0 which receives fresh air from any suitable source and distributes the air through one or more suitable openings y. The distribution of the fresh air as well as the escape of the vitiatcd air is readily traced in Figure 2 by the arrows.

Mention has been made of the basins shown in Figure 2. These contain acid baths. The baths in the basins arise and discharge themselves from several points from the basins themselves thus obtaining the maximum homogeneity and uniformity of temperature in the baths at all points in contact with the drawing plate.

The operation is readily understood. The bobbin frame t is revolubly mounted on the stud (Z of the fixed frame I), but in ordinary operation the application of the lever c (Fig. 2) to the upper worm pinion not only holds the bobbin frame stationary but also prevents turning of the upper bobbin shaft (2 and the bobbin carried thereby.

The worm gear 9 revolves continuously. Upon moving the bobbin frame in the vertical position the pinion f of the lower bobbin shaft e comes into engagement with the gear 9 so that the bobbin 1; is turned in the clockwise direction (Fig. 3). The feeler 2' distributes the thread 8 along the-bobbin. As soon as the lower bobbin is filled the lever c is released and the frame 2. given a 180 turn in the clockwise direction (see arrow, Fig. 3) so that the formerly empty upper bobbin is brought into contact with the thread. The application of the lever c to the pinion f of the upper and now full bobbin holds that bobbin stationary. The friction of the lower revolving bobbin against the thread causes the thread to start winding upon that bobbin, and after a turn or so a breakage of the thread leading from the upper bobbin occurs. The action is very prompt and effective.

It is not an uncommon circumstance in machines of the character herein contemplated to so dispose the bobbins that they occupy a horizontal plane while in operation. This has the disadvantage that both bobbins are subjected to the action of acid in the small basin located therebeneath, and it is readily seen that the perpetual corrosive action of the acid causes an unwarranted destruction of bobbins with an attending large expense. As already fully brought out, the pairs of bobbins, according to the present invention, assume positions in the vertical plane while in the operative position so that the upper and inactive bobbin is not subjected to the destructive action of the acid. But it is possible to rotate the bobbin frame If 90 from this position so that the bobbins occupy a position in the horizontal plane thereby placing both bobbins out of reach of the acid in cases when the drawing plate is out of Working order.

A plant devoted to the spinning of thread ordinarily employs a large number of the machines and in order to carry out the proposed air circulation system the machines are so placed that the discharging fresh air from the conduit 0 of one machine is directed toward the machine next succeeding (see Fig. 2). The fresh air passes through that machine and carries away the gases as fully outlined above. The result is that there is a continually renewed current of air in the surroundings of the ma chines so that the necessary work will be healthful rather than detrimental to the operators.

We claim:

1. A machine for the purpose described comprising an acid bath, a plurality of pairs of shafts each carrying a bobbin, revoluble frames upon which the respective pairs of bobbin shafts are journaled, drive means by which one shaft of each pair is operable when the pairs of shafts assume positions in the vertical plane, at which time the lowermost bobbin may be subjected to the action of an acid and the uppermost bobbin held free thereof, and means to then prevent revolution of said rcvoluble means and of the uppermost bobbin shaft.

2. A machine for the purpose described comprising a fixed support having a stud, a frame revolubly mounted upon the stud having diametrically opposite bearings, a bobbin shaft journaled upon each of the bearings and carrying a pinion, continuously operative driving means with which one or the other of the pinions is engageable whereby to drive the corresponding shaft, and means carried by the support then being engageable with the pinion of the other and idle shaft simultaneously preventing rotation of said shaft and revolution of said frame upon the stud.

3. A machine for the purpose described including acid basins in which thread is treated, a common collector including means by which gases arising from said basin are aspirated, and a fresh air conduit incorporated in said machine having an outlet, the machines being so disposed that the fresh air discharged by one carries said gases into the collector of another thereby setting up a circulation of fresh air around the machines. 5

In testimony whereof we have signed our names to this specification.

DONAGEMM A. G1 US EPPE. PIETRO TOLINI. MELCHIORRE VALENTIN I. ERCOLE MICOZZI.

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