US1988067A - Driving gear for artificial silk bobbin-spinning machines - Google Patents

Description

Jan, 15, 1935. w. ZINSELMEYER DRIVING GEAR FOR ARTIFICIAL SILK BOBBIN SPINNING MACHINES Filed Aug. 8, 1931 2 Sheets-Sheet 1 4" 55 E 24 Egg F '1 Y EE TIIIT IILII fiW f, l a

Jm. I5, 1935 w. ZHNSELMEYER DRIVING GEAR FOR ARTIFICIAL SILK BOBBIN SPINNING MACHINES Filed Aug. 8,

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Patented 15, 1935 g I g I UNITED .STATES PATENT OFFICE DRIVING GEAR FOB ARTIFICIAL SILK BOBBIN-SPINNING MACHINES Walter Zinlelmeyer, Bemscheid-Lennep, Germany, minor to the firm Barmer Maschinenfabrik Aktiengesellachaft, Wnppertal Oberbarmen, Germany, a corporation of Germany Application August a, 1931, Serial No. 556,021 In Germany September 9, 1930 Claims. (Cl. 242-18) This invention relates to a simplified driv- In order to effect the change-over a rocking ing gear for bobbin spinning machines 'employlever is mounted on the change-over coupling ing a single pair of conical drums. and connected with the operating rod by means It is known to employ a pair of conical drums of a tension spring which, when moved over the 5 for the drive of bobbin spinning machines in. dead-point, instantaneously changes over the 5 order to produce a uniform drawing out of the change-over coupling. thread. In order to produce a variation in the The operating rod may however be held by a speed of revolution of the bobbins corresponding detent and stressed by means of a spring shortly to the increase in winding diameter, the belt before the change-over by the belt guiding memconnecting the conical drums is slowly moved her and then allowed to move, for effecting the 10 along the latter. After the bobbins are fully change-over of the change-over coupling, under wound and are replaced by empty bobbins, the the action of thespring, byreleasing the detent belt is moved back to the starting position by through the intermediary of an abutment on the hand, whereby the spinning operation is interbelt guiding member.

rupted. It has hitherto been usual therefore, in For entirely automatic operation, the bob- 15 order to allow of an uninterrupted spinning bins, mounted on a rocking member, are swung operation, to employ two pairs of conical drums, around by means of the operating rod simulalternately setting one pair only in operation taneously with the changing over of the reverswhile in the case of the other'pair the belt is ing gear. The operating rod, by operating a being returned to the starting position by hand. locking lever, engages a key between the rock- 20 These arrangements are either uneconomical ing member and the drive, this key being again from the point of view of the time required or, disengaged automatically by the locking-lever when they are provided with two pairs of drums, after a half rotation. For this purpose the of awkward construction. locking lever is provided with two noses ar- This invention has for its object the provision ranged diametrically opposite with respect to 25 of a simplified drive for bobbin spinning me.- the rocking member, which noses alternately chines making use only of one pair of conical disengage the key on the rocking of the said drums while allowing uninterrupted spinning. member.

The belt which connects the two conical drums In the accompanying drawings, which illusis slowly moved, during the spinning operation, trate two constructions of the apparatus ac- 30 along the drums in such a direction that the cording to the invention, speed of revolution of the bobbins decreases in Fig. 1 is a diagrammatic front elevation view accordance with the increase in the winding of a driving device for bobbin spinning diameter thereof, whereas during the exchange machines,

of the bobbins it is moved backso quickly into Fig. 2 is the same in side elevation, 35

the starting position that the spinning operation Fig; 3 illustrates the eccentric drive for the proceeds without interruption. The movement locking lever of the rocking member, being a of the belt in both directions is effected by means fragmentary view taken on the line A-B of of a reversing gear operating through a belt Fig. 2,

guiding member. Fig. 4 is a fragmentary plan view of the 40 The reversing gear consists of a coupling part reversing gear, loosely mounted on the shaft of an advancing Fig. 5 is a front elevational view of a second spindle and slowly driven, as for example by construction of the operating links for reversmeans of a pawland ratchet mechanism, a ing the drive, and second coupling part also loosely mounted on Fig. 6 is a fragmentary plan view of the re- 45 the shaft, but rotating rapidly in the opposite versing gear shown in Fig. 5.

direction to the first, and a change-over coupling The driving arrangement for bobbin spinning arranged to be axially displaceable on but nonmachines shown in Figs. 1 and 2 consists of. two rotatable with respect to the said shaft. This conical drums 1 and 2, which are so mounted on change-over coupling is alternately connected two superimposed shafts 3 and 4 that their 50 to the two coupling parts, whereby the advancconicities are oppositely directed. The two coniing spindle is rotated slowly in the one direction cal drums 1 and 2 are operatively connected by and rapidly in the other direction, so that the means of a belt 5. A belt guide, consisting of a belt guide moves slowly in one direction and fork 6 having two guide rollers 4'7 arranged at rapidly in the reverse direction. each of its ends, is provided for displacing the belt longitudinally of the drums. For the tensioning of the belt there is arranged on the belt guide, by means of a fork 49, a tensioning roller 48 which is pressed on to the belt by the action of its weight. The belt guide is mounted on a lead screw or advancing spindle 7 and is displaced thereby in the axial direction. Also mounted on the spindle 7, laterally of the drums 1 and 2, is an easily rotatable ratchet 'wheel 10 which is secured against axial displacement. Immediately adjacent this wheel is mounted, also so as to be freely rotatable, a bell-crank lever 50 which may be oscillated by means of a cam mechanism driven from the gear wheel 32 and having its connecting rod 51 secured to one end of the bell-crank lever. At the other end of the bell-crank lever' is pivoted a pawl 52 engaging by its nose with the teeth of the ratchet wheel 10. A further toothed wheel 14 is rotatably mounted on the spindle 7, being secured against axial displacement thereon, and is rapidly rotated by means of a drive not shown in the drawings.

Between the two wheels 10 and 14 is mounted a change-over coupling 8, which is arranged to be axially displaceable upon whilst secured against rotation relatively to the spindle '7, by means of a feather. and groove arrangement. Parallel with the spindle '7 there is mounted a coupling operating rod 21 which is axially displaceable and carries two stops 22 and 64 for the displacement of the change-over coupling. Moreover this rod 21 is connected with one end of a lever 20, the other end of which is pivotally connected to a support 53. The lever 20 is further connected by a spring 19 with another operating rod 18 mounted below the spindle 7. This rod is axially displaceable and carries two stop rings 16 and 17, against which a. stop disposed on the belt guide alternately strikes during the movement of the belt guide.

For the bobbin changing operation the rocking member 54 is connected by means of a key 26 with a driving wheel 27, and is again uncoupled after a rocking movement of 180 has been effected. The driving wheel 27 is rotatably mounted on one end. of the rocking member 54 by means of a stub shaft 55. The key 26 is mounted in a groove of the stub shaft 55 and is retained in uncoupled positionby means of the nose 56 of a locking lever 25. The locking lever 25, for the purpose of changing the bobbins, is actuated from the rod 21. For this purpose there is provided on the rod 21 an engagement member 58 which drives, through a pawl 22', a ratchet wheel 59. The ratchet wheel 59 is secured to a control plate 23 formed with notches. These notches are alternately spaced 9. different distance from the axis of rotation. An axially displaceable pin 24, adapted to engage in these notches, is connected with one end of the locking lever 25 and is forced into the notches by means of a spring 60.

The operation of the drive is hereinafter described. Figs. 1.and2 show the parts at the end of the winding operation, shortly before the exchange of the bobbins. The belt 5, under the action of the belt guide, has reached the end position at the right-hand end of the conical drums. Shortly before this the stop 15 of the belt guide strikes the stop ring 1'! of the operating rod 18 and thereby displaces the spring 19 secured on said rod 18 through the dead point. towards the right, into the position shown in Fig. 1. In consequence of this the lever 20 is jerked to the right under the action of the spring 19 and displaces the coupling operating rod 21 which couples the change-over coupling 8 with the spur wheel 14. The advancing spindle 7 is then set in rapid rotation in the reverse direction whereby the belt guide is quickly moved back into the starting position shown in' dotted lines in Fig. 1.

Simultaneously with the reversal of the change-over coupling the displacement of the rod 21 rocks the lever 20 which in turn rocks the pawl 22' and advances the control plate 23 so far in relation to the ratchet wheel 59 that the pin 24 rises out of the notch 61 and drops into the. notch. 62. Hereby the pin 24, under the action of the spring 60, is moved somewhat downwardly and the locking lever 25 is rocked about the pin 63 so that the nose 56 releases the driving key 26. This key 26 is now rotated under the action of the spring 29, whereby the rocking member 54 is coupled with the driving wheel 27 and is rotated until the nose of the key 26 strikes the upper nose 5'7 of the locking lever 25 and again disengages the driving wheel 27 due to the rotation of the driving key into its initial position.

Shortly. before the belt guide arrives in the position shown in dotted lines, the stop 15 strikes against the other stop ring 16 of the rod 18 and moves the latter to the left, whereby the spring 19 is again moved over its dead point, but this time to the left into the position shown in dotted lines. Thereby the lever 20 is jerked back and disengages, by means of the rod 21 and the stop 64, the change-over coupling from the spur wheel 14 and couples it with the ratchet wheel 10. The pawl and ratchet drive 10, 11 now acting on the spindle 7 rotates the latter slowly and thus displaces the belt 5, through the intermediary of the belt guide, in the direction of the arrow a. This motion is executed during winding and serves to reduce the rate of revolution according to the increasing diameter of the windings.

Fig. 5 shows a further construction of the control device for reversing change-over coupling. The rod 18 is omitted and replaced by two sleeves 37 and 38 secured on the coupling operating rod 21 in addition to the stops 22 and 64. Each of these sleeves is provided at one end with a nose 35, 36, whereas at the other end there is secured a spring 39, 40 encircling the rod 21. A stop 34 fixed to the belt guide, which during its movement is displaced longitudinally of the rod 21, alternately compresses the springs shortly before the end position is reached. on a stationary rod 33 arranged above the rod 21 there are arranged, on sleeves 41, 42 disposed approximately opposite to the sleeves 37, 38, detents 43 and 44. Each detent 43 and 44 is formed as a two armed lever, one end being shaped to a hook 45 or 46. Each detent is rotatably mounted on a bolt 65 or 66 and during the movement of the coupling operating rod, engages at the end positions alternately behind the nose 35 or 36 of the sleeve 37 or 38. A rodlike stop 32 mounted transversely to the belt guide is adapted to strike alternately, in the end positions, against one of the detents 43 or 44. The detent thus released frees the corresponding sleeve 37 or 38.

- The operation of the device will be described with reference to Fig. 5. It being assumed that the belt guide has almost arrived at the end position shown in the figure, the coupling operating rod 21 is disposed in its left-hand end position, in which the detent 43 is disengaged and the detent 44 engages with its hook behind the nose 36. Upon the further movement of the belt guide to the right-hand end position the stop 34 strikes against the spring 40 and compresses this until the stop 32 strikes against the inner lever end of the detent 44. This detent is thereby disengaged and releases the sleeve 38 which is immediately moved to the right under the action of the spring 40 and reverses the change-over coupling 8 by means of the abutment mounted on the control rod 21. When the control rod 21 has arrived at its right-hand end position, the hook of the other detent engages behind the nose 35 of the sleeve 37, under the action of a spring (not shown) mounted on the detent. When the belt guide is again moved back to its starting position the operating rod is again stressed so that a rapid change-over motion can take place upon the release of the corresponding detent.

What I claim is:

l. A drive for bobbin spinning machines comprising one pair of conical drums, a belt connecting said drums, a belt guide mounted on an advancing spindle, a slowly rotating coupling part mounted loosely on the shaft of said advancing spindle, a second coupling part also loosely mounted on said shaft, rotating rapidly in the reverse direction, and a change-over coupling axially displaceable but secured against rotation on said shaft, said change-over coupling being located between said coupling parts and movable for selective engagement therewith.

2. A drive for bobbin spinning machines comprising one pair of conical drums, a belt connecting operatively said drums, an advancing spindle, a belt guide mounted on said advancing spindle, a slowly rotating coupling part mounted loosely on the shaft of said advancing spindle, a second coupling part also loosely mounted on said shaft and rapidly rotating in the reverse direction, a change-over coupling axially displaceable but secured against rotation on said shaft, said change-over coupling being located between said coupling parts and movable along said shaft for selective'engagement therewith, an operating rod carrying two stops for said belt guide, stops on said rod engageable with said change-over coupling to move the same into selective engagement with said coupling parts, a rocking lever pivoted at said change-over coupling, and a spring connecting said operating rod with the said rocking lever and adapted to be moved suddenly through a dead point.

3; A drive for bobbin spinning machines comprising one pair of conical drums arranged on parallel axes, a belt connecting operatively said drums, an advancing spindle, a belt guide mounted on said advancing spindle and provided with stops, a slowly rotating coupling part mounted loosely on the shaft of the advancing spindle, a second coupling part also loosely mounted on said shaft and rapidly rotating in the reverse direction, a change-over coupling axially displaceable but secured against rotation on said shaft, said change-over coupling being located between said coupling parts and movable along said shaft for selective engagement therewith, a rod cooperating with said belt guide, means on said rod for operatively conbelt guide mounted on said advancing spindle.

and provided with stops, a slowly rotating coupling part mounted loosely on the shaft of the advancing spindle, a second coupling part also loosely mounted on said shaft and rapidly rotating in the reverse direction, a change-over coupling axially displaceable but secured against rotation on said shaft, said change-over coupling being located between said coupling parts and movable along said shaft for selective engagement therewith, an operating rod actuated from the belt guide for alternately engaging and disengaging -said change-over coupling with the slowly or the rapidly rotating coupling part, an intermittently operable rocking member, means to cause operative engagement between said rocking member and the driven one of said shafts, said means being normally held in inoperative position, and means controlled by the movement of said operating rod for intermittently and alternately releasing the last means to effect operating of the rocking member and to effect holding of said last means from operative position.

5. A winding mechanism comprising one pair of conical drums arranged on parallel shafts with opposite conicities, a belt connecting operatively said drums, an advancing spindle, a slowly rotating coupling part mounted loosely on the shaft of the advancing spindle, a second coupling part also loosely mounted on said shaft and rapidly rotating in the reverse direction,

a change-over coupling axially displaceable but secured against rotation on said shaft, said change-over coupling being located between said coupling parts and movable along the shaft of the advancing spindle for selective engagement therewith, an intermittently operable rocking member mounted on the driven one of said shafts, a key for effecting keying of said rocking member and shaft into'operative relation, an escapement lever normally holding the key from operative keying position andmovable to permit rotation of the key through-180 degrees from one position to another, and means controlled by the movement of said operating rod for effecting movement of the escapement lever to release the key for operation of the rocking member intermittently.

WALTER ZINSEIMEYER.

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