US1528565A - Spindle for spinning machines - Google Patents

Description

G. PIGNAL Filed July 22. 1924 Mar. 3, 1925.

' SPINDLE FOR SPINNING MACHINES Patented Mar. 3, 1925. l

UNITED STATESi PATENT QFFECE. n

GEORGES PIGNAL, OE TUEIZE, BELGIUM, assrenor. To EABRIQUE DE SOIE ARTIFI- CIELLEE DE TUBIZE, SOCIETE ANONYME, or BRUSSELS, BELGIUM.

SPINDLE FCB SPINNING MACI-IINES.

Application led July 22, 1924. Serial No. 727,405.

To all whom t may concern:

Be it known that I. GEORGES PIGNAL, a citizen of the French Republic, residing at Tubize, in the Kingdom or" Belgium, have invented certain new and useful Improvements in Spindles for Spinning Machines, oi which the following is a specification.

My invention relates to spindles for certain spinning machines, known as bell spindles employed in the spinning of artiiicial textile substances, for instance artificial silk as obtained from acetate of cellulose.

In these machines the spindles as they are actuallyV constructed attain generally a speed oi rotation of 10,000 revolutions per minute which gives the thread a twining ot' 200 turns per meter if the speed of production of the thread is not greater than mete-rs per minute. It it is desired to speed up the output to 100 meters ay minute the twining that can be obtained with these spindles is not more than 100 turns per meter.

One object of my invention is to allow of considerably increasing the speed of rot-ation ot the spindles of these spinning machines in such a way as to be able to effect for example a speed of 20,000 revolutions per minute which, with an output oi' 100 meters per minute, when spinning, allows of giving the thread the required twining of 20() turns per minute. The two most serious obstacles to the obtention of suoli considerable speeds consist on the one hand in the excessive wear produced by the friction of the spindle rotating directly on the fixed axial rod which also serves as a guide for its reciprocating movement and on the other hand in the production of vibrations which alect all the system.

And it is a further object of my invention to obviate the lirst inconvenience that is to say to reduce the friction of the movement ot the movable part to the minimum and also to prevent the second inconvenience that is to say to assure suliicient Stability of the 4 parts, whilst allowing the reciprocating movement of the spindle on its axial rod without rotation and Without exerting strain on the latter.

With these objects in view, my invention essentially consists in the special arrangements and combinations of parts as will be hereinafter fully described and pointed out in the appended claims.

The annexed drawing illustrates in vert-ical section a spindle constructed in accordance with the invention.

In the drawing a indicates a bar given a vertical up and down movement.

On this bar is fixed for each spindle a sleeve l) bored to the diameter of the axial rod c which carries the bell (not illustrated). This sleeve 7) slides with slight friction on the spindle c and carries the interior races of the ball bearings d and e of the type have ing oblique reaction. rllhe outer ball races are lixed to the bobbin carriage which comprises from below upwards, a cup f which contains the ball-bearing c; a pulley f/ on which the driving strap acts; a plate 7L on which the cup z' containing the ball bearing CZ is screwed; a gyroscopic fly-wheel 7c integral with the cup i and a sleeve carrying the bobbin and which has some tenths of a millimeter play on the axial rod c so as not to touch it.

At the time of operation the pulley g being put in rotation by the driving strap turns on the ball bearings al and e and drives the gyroscopic ily-wheel and the sleeve j carrying the bobbin. f

The whole of this device the stability of which is particularly great owing to the action of the gyroscopic lyewheel 7u can lievertheless be displaced on the fixed axial rod c under the action ot' the bar a without any direct contact being produced between the rotary device and the rod.

Experience has shown that, owing to this construction the considerable speed indi cated above and corresponding to a twining and output much higher than could be eected hitherto by mechanism of this character can be realized.

What I claim is:

l. In a. spindle ot the character described in combination, a ixed axial rod, a sleeve adapted to slide on the said rod, means whereby an up and down movement is com muiiicated to the said sleeve, interior ball bearing races carried by said sleeve, balls mounted in the said races, a bobbin carriage supported by the said balls and a gyroscopic fly wheel cooperating with the said bobbin carriage.

2. In a spindle of the character described, in combination, a xed axial rod, a sleeve adapted to slide on the Said rod with Slight friction, means whereby an up and down movement is communicated to the said sleeve, interior ball bearing, races carried bysaid sleeve, balls mounted in the said races, a pulley supported by the said balls, a gyroseopic fly wheel mounted on the said pulley and a bobbin-sleeve mounted on the fly-Wheel and surrounding Wit-li play the xed axial rod.

3. In aspindle of the character described in combination a fixed axial rod, a bar having an up and down movement along the said rod, a sleeve mounted on the said bar and adapted to slide on the axial rod, interior ball bearing races carried by the said sleeve, balls mounted in the said races and a bobbin carriage comprising a cup, an outer ball race in the said cup, a pulley, a plate, a cup screwed on the said plate, a second outer ball race mounted in the said cup, a gyroscopic fly Wheel integral With the said cup and a sleeve surrounding with play the iixed axial rod.

In testimony Whereol I have a'lixed my signature in presence of t-Wo Witnesses.

GEORGES PIGNAL.

Witnesses:

Jos. BOLEAU, D. MnoLsTnrN.

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