US1421579A - Bobbinet-making machine - Google Patents

Description

0. SEEBERGERL BOBBINETJMAKING MACHINE. AFPL ICATION. FILED APR .13, I921.

Patented July 4, 1922.

OTHIVIAB SEEBERGER, OF BBUGG, SWITZERLAND.

BOBBINET-MAKING MACHINE.

that, for the purpose of producing the initial movement of the bobbin when the latterchanges its place, a considerable amount of power must be transmitted for this purpose through the pattern mechanism. This re sults in irregularities in, and even stoppages of,'the work.

In particular. this places a great strain upon the pattern cards which have to be re-- 'newed very frequently.

Further the constructions hitherto known have the further disadvantage thatvat the beginning and at the end of their change of place the bobbins have to be pushed into and moved out of the race or track by special devices. In this matter the feet of the bobbins are frequently jammed or the knock against one another as a result of inaccurate adjustment of the actuating parts. thus en tailing many repairs, and thereby causing the machine to remain idle for an excessive length of time. a

Such interruptions are rendered iinpossi" ble by the present invention whereby the pattern mechanism is not required to impart motion to the bobbins, and therefore no devices are necessary for inserting the bobbins into the race or track.

The movement of the bobbinsis effected by discs which run selectively and which.

'in their turn, are coupled directly to the driving wheels that are mounted underneath, and are automatlcally uncoupled again there from after a partial revolution.

A constructional example of this invention is illustrated by way of example in the ac companying drawings in which- Fig. 1 is an elevation, and

Fig. 9. is a view of the raceway when arranged in a straight line.

Fig. 3 is a section through a hohhin stem.

Specification of Letters Patent.

Application filed April 13, 1921. Serial No. 460,884.

Fig. 4 is a side elevation of an under-part ofa disc, and

Fig. 5 is a plan of a bar.

The exact shape of the disc is shown in Fig. 6 which is a partial plan.

As shown in Fig. 3, the driving wheel a rotates around the stationary stem b. In the extended hub of the driving wheel a there is mounted in an axially slidable manner a clutch pin 0, which is parallel to the axis of the driving wheel a. and around which is arranged a coiled spring (Z. This spring (Z bears at one end against the wheel a and at its other end against a pin 6 that extends transversely through the aforesaid clutch pin 0. Below the pin e is a second pin f which extends parallel to the pin 6 through the clutch pin 0. In the hub of the driving wheel there is further mounted in a radially slidable manner a bar g. The outer end of this bar is formed with a truncated double bevel as shown in Fig. 5.

The double beveled bar 9 is formed at its upper end with a groove h. In an inwardly extending recess in the bar 9 there is arranged a spring 2' which has a tendency to push the said bar outwards.

The clutch pin 0 extends freely through a transverse slot g of the bar 9 in such a manner as not to hinder the radial move ment of the said bar g. The bar g is held in its inner locking position by the engage ment of the ends of the pin 7 in recesses g of the bar 9.

71: is a nib provided on the hub of the wheel diametrically opposite the bar 5/.

m are the discs which are situated in the upper plate Z and which are adapted to rotate freely around their stems Z).

The height of the discs in is exactly equal to the thickness of the top plate Z. The discs m may have the same diameter throughout their entire height, or they may be so formed and arranged that each pair of adjacent discs will engage in or over one another by means of their projecting edges.

Each disc m has further two diametrically opposite recesses n,(Fig. 6) which are so shaped as to be adapted to determine the path of the bobbin 0. and so that the noses :0, formed by the recesses n in the discs are caused to act as drivers for the bobbins.

Below the disc m and fixed to it, is a flange 9 formed with two diametrically op-- posite radially extending lugs shown in side elevation in Fig. 4.

In the flange there is formed a small depression 1" into which, 'for'the purpose of accurately stopping the disc m, a nib provided on a spring 8, is caused to snap bythe pressure of a spring 5.

Inthe low'r discthereis arranged a pin '0 which is guided by means of a sleeve u,

and which can be raised and lowered in'the usual; mannerby meansot a pattern mecha- 'nism, whereby the said pin imparts its movements to the ringw, that is fixed on the pin 1 1., The manner of operation is as follows If for instance the bobbins v0 and O Se ig. 1 and 2) are to change over so that moves over to O and 0 moves over to 7 OH thepin e and with it the ring 10 will be raised by'the pattern mechanism in the I usual manner.

The ring 10 presses the rod 0 upwards,

Jandsince the wheels a are continuously rotatmg around the stems b, the rod 0 sit- 'uated on the wheel a will 1n its raised position (indicated in dotted lines in Fig. 3)

transmit, by-pressure upon one one of the.

lugs g, rotary II10t1OI1 to the disc 11 V In the rotation of the disc, the noses m, 00,

carry the'bobbins O and 0 round with them.

,,,In order, however, that the rotary motion of the discs shall be accurately limited, the

further above described means are provided. lnralsing the rod 0 and with it the pin 6, the spring Z isstressed, and as soon as the clutch pin 0 has been raised to such a height that the pin has come level with the groove Z2, the pressure of the spring 1' will cause the bar 9 to shoot outwards,so that the pin 7 bears againstthe bottom of the groove 71,

and the clutch pin 0 can not move down.

So longas this position continues, the coupling between the wheel a andthe disc m is maintained, and the disc m- ,will revolve with the'wh'eel a". After almost one completed half revolution the bar 9 will strike 'the spring (Z,'to drop back into its position vof rest.

By this means thepressure upon the lug ceases, and the disc ceases to rotate. In order that the rotation of the disc shall cease exactly at the proper moment, the nib situated on the springs snaps into the corresponding recess 7" of the flange y) and thus holds'thefflange 79 and through it the disc m fast-.-

During the half revolution the bobbins O and 0 have changed places; and the bobbins remain, midway between every two adjacent discs; that is to say, they are not moved out of the race or track as hitherto. lonsequently no devices of any kind are necessary in order to move the bobbins back into the race 'or track, and therefore the strain on the pattern mechanism which is required for this purpose in other bobbinet making machines, is absent, thus allowing of a considerable saving in wear and tear-qt the saidmechanism.

What I claim is -1 1. A bobbinet making machine of thekind described, comprising a stationary stem, a drive wheel rotatably mounted on said stationary stem, a clutch pin axially slidable in the drive wheel and turning with the same,

. a pattern mechanism to control the upward movement of the clutch pin, a spring tocontrol the downward movement of the clutch pin, a spring pressed bar radially slidable in the drive wheel and capable of locking the clutch pin .in the raised position and of being locked in the inner position by the clutch pin, a projection provided on the drive wheel diametrically opposite thebar, a disc adapted to rotate freely around the said stem and-having recesses forming noses to drive the bobbins and having also two. diametrically opposite radially extendinglugs capable of being engaged by thelclutch pin and means for accurately and. yieldingly stopping the disc.

2. rt bobbinet making machine, comprisin a stationary stem, a drive wheel rotatably mounted on said stationary stem, a clutch pinaxiall slidable inthe drive wheel and turning wit the same, a patterninechanism to control the upward movement of the clutch pin, a spring to control the downward movement of the clutch pin, a spring pressed'bar radially slidable in the drive a wheel and having a transverse slot to receive the clutch pin, a horizontal groove to support apart of the clutch pin in its raised position, vertical recesses to receive the said partof the clutch pin and a double beveled V outer end, a projection provided on the drive wheel diametrically opposite the bar, a disc adapted to rotate freely around the said stem and having recesses forming noses to drive the bobbins and having also two diametrically opposite radially extending lugs capable of being engaged by the clutchpin and means for accurately and yieldingly stopping the disc. v

3. A bobbinet making machine of the kind described, comprising a stationary stem, a drive wheel rotatably mounted on said stationary stem, a clutch pin axially slidable in the drive wheel and turning with thesame, a pattern mechanism; to control the upward movement of the clutch pin, a spring to control the downward movement of the clutch pin, a spring pressed bar radially slidable in the drive wheel and capable of locking the clutch pin in the raised position and of be ing locked in the inner position by the clutch pin, a projection provided on the drive Wheel diametrically opposite the bar, a disc adapted to rotate freely around the said stem and carrying a flange having recesses forming noses to drive the bobbins and also two diametrically opposite radially extending lugs capable of being engaged by the clutch pin and a spring coacting With a de- 10 pression in the said flange to accurately and yieldingly stop the disc.

In testimony whereof I have aflixed my signature in the presence of two Witnesses. OTHMAR SEEBEBGER. Witnesses:

CHR. MILLIEN, HERMAN HUBER.

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