US2028821A - Spinning machine for rayon or other synthetic material - Google Patents

Description

Jan. 28, 1936. J. BRENZINGER SPINNING MACHINE FOR RAYON OR OTHER SYNTHETIC MATERIAL Filed Oct. 1, '1930 4. Sheets-Sheet l Ja /ms 5 962' btoweag Y /W/72%% amwmtozz rewm'g Fame 28, 1936.. J BRENZINGER 2,928,821

SPINNING MACHINE FOR RAYON OR OTHER SYNTHETIC MATERIAL Filed Oot. l, 1930 4 Sheets-Sheet 2 W m w w W w 4 w M a W W Jan. 2%, 1936' J. BRENZINGER 2,028,821

SPINNING MACHINE FOR RAYON OR OTHER SYNTHETIC MATERIAL Filed Oct. 1, 1930 Sheets-Sheet 3 wmtoz 7i; Brawl/7176f J, 28, 1936- J. BRENZYINGER 2,028,821

SPINNING MACHINE FOR RAYON OR OTHER SYNTHETIC MATERIAL Filed Oct. 1, 1930 4 Sheets-Sheet 4 53 6'4- avwem coz'.

- Jiz/b'us Brgnzz'nyer 35% fl t town;

Patented Jan. 28, 1936 UNETE STATES PATENT OFFICE SPENNING MACHINE FOR RAYON OR OTHER SYNTHETIC MATERIAL necticut Application October 1,

1 Claim.

The present invention relates generally to rayon, or other synthetic material, spinning machines and has for its main object and feature the coordination of the speed of the take-up spool with the speed of the pump that delivers the synthetic material to the spinnerette from which latter the thread-like product passes to said take-up spool.

In the accompanying drawings, the invention is disclosed in a concrete and preferred form in which:

Fig. 1 is a plan view more or less diagrammatic in character of the essential elements of a rayon spinning machine;

Fig. 2 is a view in side elevation of the novel transmission means associated with the rayon spinning machine;

Fig. 3 is a vertical sectional view substantially on the plane of line 3-3 of Fig. 2;

Fig. 4 is a detail view of the reversible ratchet and pawl mechanism; and

Fig. 5 is a horizontal sectional view substantially on the plane of line 5-5 of Fig. 4.

I indicates a spinnerette to which synthetic material is supplied by pump 2. 3 is a rotatable spool and 4 is a thread-guide having a movement back and forth to lay the newly formed thread on the spool. As Wound material 5 accumulates on the spool, the effective diameter of the spool increases and consequently it takes up more and more thread per revolution. The speed of the pump being constant, it will be understood that the thread produced becomes thinner and thinner. In an application filed May 9, 1930, Ser. No. 450,950, means are shown whereby, as the wound material accumulates on the spool, the speed of the pump, and consequently the rate of delivery of the synthetic material, is increased to the end that the thread produced may be of uniform thickness or denier. In the present application the reverse arrangement is disclosed, viz: a construction in which the pump speed remains constant and the angular speed of the spool is gradually decreased to compensate for its increase in surface speed.

6 indicates a motor or other source of power from which motion is transferred to main shaft I by means of flexible connection 8. 9 and I indicate two driven shafts, provided with pulleys II and I2 having faces that move toward. and away from each other. Main shaft l is provided with a pulley I3 the faces of which need not be movable, and passing over pulleys II, I2 and I3 is a belt or flexible transmission member I4. Levers indicated at I and I6 are pivotally sup- 1930, Serial No. 485,626

ported at IT midway their ends, and these levers are pivotally connected at I8 and I9 to the opposed faces of pulleys II and I2. The free ends of the levers are connected by spring 20, the action of which latter normally tends to separate the faces of pulley II and to bring toward each other the faces of pulley I2. Suitable means are provided to move the levers in opposition to the spring, such means being generally indicated at H, said numeral designating a controller composed of two taper members mounted on reciprocatory rack 22 which derives its motion from pinion 23. The taper members engage rollers 24 carried by levers I5 and I6 and are guided by rollers 25 mounted on the framework independently of the levers.

26 indicates a spool shaft carrying one or more spools 3 and 21 is another spool shaft carrying one or more spools 28. Spools 3 and 2B are located opposite to each other with an intervening spinnerette I, so that when one spool is filled the thread from the spinnerette may be transferred from one spool to the other. Drive shaft 9 rotates shaft 26 and shaft I0 rotates shaft 21 in this case by the following mechanism. 29 and 30 indicate two auxiliary shafts, one of which is geared to shaft 26 by spiral gears 3|, and the other of which is geared to shaft 27 by spiral gears 32. Intermediate shafts 9 and 29 are a set of spur gears 33 having a clutch 34, and a train of spur gears 35 having a clutch 36 extends between shafts Ill and 30. It will therefore be seen that one set of spools 3 is driven from shaft 9 and the other set of spools 28 from shaft I B, and that the speed of the spools will vary in accordance with the speed of rotation of pulleys I I and I2.

The pump 2 is driven from the constant speed shaft (1), in the present instance by the following means: mounted on shaft I is a pulley 31, and on shaft 33 is another pulley 39, and a. belt 40 is trained over said pulleys. It will be understood that this drive between shafts l and 38 could be in the form of sprocket wheels and chain or otherwise, but, in the present instance, it is preferred to have the speed transmission means shown so that the speed may be adjusted by bringing the faces of pulleys 31 and 39 nearer to or farther away from each other. It must be borne in mind, however, that there is no automatic variation in speed, so far as this dvice is concerned. Shaft 38 transmits motion to pump 2 by any suitable means such as the flexible driving connection indicated at 4|.

Suitable means are provided to drive pinion 23 which, in this instance, take the following form:

V will turn in one directionor the other.

60;;ment with ratchet 55.

main shaft '5' transmits motion'to a shaft 52 by means of chain 53 and suitable sprockets, and shaft 52 in turn drives a shaft 54 by means of pinion 55 and gear 45. Mounted eccentrically of shaft 5 3 is a pawl 41 that engages and drives a ratchet 58 and engaging with this ratchet is a detent or stop pawl 53. Ratchet 58 is mounted on stub shaft 5land has an eccentric portion 5i and mounted therein is a housing 52 that reciprocates in guides 53 in response to rotation of eccentric portion 5! of ratchet 58. 55 and 55 indicate two 'ratchets, fastened together as at 5B, and mounted loosely on the end of shaft 50. Means are provided for rotating said ratchets 55 and 55 in either 5 direction, said means being here as follows? carried by reciprocating housing 52 are two sets of pawls that engage ratchets 54 and 55 and thus drive the latter by reason of the reciprocating motion of housing 52. 51 indicates a pivot on 2 housing 52 and on this is mounted a pawl 58 and another pawl 59. It willbe seen that these p awls operate in reverse. direction and that the teeth of ratchets 54 and 55 are in reverse relation to each other,pawl 58 being adapted to engage ratchet g5- 54 and pawl 55 being adapted to engage ratchet 55. Therefore by throwing inpone pawl or the other the ratchets (being secured together at 56) Suitable stop pawls and Bi for ratchets 54 and are 3Q pivoted at 52 on housing 52, and pawls 58 and are connected together by link 53, and pawls 59 and iii are likewise connected by means of a link 55. It may also be mentioned here that stoppawl or cletent as is likewise pivoted to housing 52 ata 35point indicated at and is normally urged into engagement with ratchet 58 by weight 66. Carried by ratchets 54and 55 is a pin 6'! that trans mits motion throughpin gear 58 to shaft 591 and this latter in turn drives pinion 23 through suit.-

4 able reduction gearing,

Suitable means are provided for throwing in or out, with respect to ratchets 54 and 55, either set of pawls. In the present instance these'means take the following form: 10 is an interlocking. ggjbar pivotally mounted at H, and 12 and I3 indicate two levers pivoted at M, one of which controls ' pawls 58 and 50 and the other of which controls pawls 59, and E I. l5 and 16 indicate two links that extend between interlocking 'bar 1!] 50..and levers l2 and 73. It will now be apparent that, when interlocking bar H3 is in the position shown in Figs. 3 and a, the free end of lever 72 will be in a lowered position and consequently pawls .55 and fifi will be in engagement with 55 iratohet 54 and. will effect rotation thereof in one direction, It will further be apparent that the position of interlocking bar ill shown in Figs. 7 3 and 4 will raise the outer free end of lever '53 thereby moving pawls 55 and Bi out of engage.-

When the, position of interlocking bar '85 is reversed, it will be obvious that pawls 5E- and 65 will be moved out of en-' gagement with ratchet 55 and that pawls 55 and 5! will be moved into engagement with ratchet 65 J 55, and as a result ratchet 55 will be driven in the reverse direction from that in which ratchet 55 was driven. It will be remembered that ratchets 55 and 55 are securedtogether at 55', and it will therefore be seen that" driving pin 57! will be removed in one direction when ratchet 55 is engaged by its pawls and in the other direction when ratchet 55 is engaged by its pawls. Consequently pinion 23 will bemoved in one direction under one set of conditions, and in the other di-.

:1 rection under. the, other set of conditions, and.

as a result rack 22 will be moved up or down in response to the direction of rotation of pinion 23. When doffing the thread say from spool 3 to spool 28, it is important that both spools should be rotating at the time of transfer'of the thread from to 28 as otherwise there will be an accumulation of unwound thread. Suitable means are therefore provided to compel the operator to throw inclutch 36 before he can throw clutch 34 out and vice versa. It is also important that at the same time the action of the ratchet mechanism 5455 should be reversed. Any suitable pivotedon center 8i, and,'should the operator' now attemptto declutch 34, pin Ti will prevent such action. Arm 85 is connected in a way simi lar to that just described to clutch lever 82 pivoted at '83, and both pins Hand 19 are carried by interlocking bar 15 in such a way that when one pin is up the other is down. It will now be apparent that, with the parts in the position shown in Figs. 1 and3', the operator cannot deolutch 34 unless he first moves clutch into engagement and reverses the position of thepins'," thereby at the same time reversing ratchet mechanisrn 54-55.

The means to reciprocate thread guided arenot shown in detailgbut it may be pointed out here that such means can be actuated from shaft '85 which latter is driven from main'shaft i by means of flexible drive 85.

The operation of the device is as follows: let'us assume that the parts are in 'the'position'shown in the drawings, from which it would appear that the winding operation as regards spool 3 is ap-' proaching completion. In these circumstances, it will be seen that clutch 34 is in. and cannot be declutched on accounto'f the position of pin 11 lever frombeing moved to throw out clutch 34. Clutch 36, on the other hand, is out or disengaged. The position of interlocking bar 10 is such that ratchet 55 is being engaged by its driv- I which prevents lever 19 and therefore clutch ing pawl 58, and rack22 is rising and has-nearly come to the end of its stroke. Said rack, in rising, has gradually separated the faces of pulley l2 and brought the faces of pulley il closer to-' gether, the result being that the speed of shaft 9 has been gradually reduced and that of shaft l9 gradually increased. Spool3 has therefore been gradually slowed down to compensate for its increase in surface speed. Spool 28 is not being driven at this time because clutch 36 is dise'n-* gaged. If the operator now desires'to discontinue the winding operation with respect to'spool 3 and to begin winding on spool 28, he will first of all engage clutch 35 thereby rotating sp'ool28. He

will then transfer the thread from spool 3 to spool 23 and atthe same time he will reverse the position of interlocking bar [0 thereby withdrawing pin'll so that clutch 35 can be declutched and moving pin 18 up so that clutch 36 cannot be deolutched, and also thereby reversing the ratchet drive through the connections described,'so that pawl 53 no longer engages ratchet 54 and bringing pawl 59 into enga'gement'with ratchet55. It

will be understood that the effect of this is to;

reverse rotation of pinion-23 and-to therebycause rack 22 to begin its gradual descent. The effect of this is to gradually bring the faces of pulley I2 toward each other and the faces of pulley ll away from each other. Consequently the speed of shaft l0 and therefore of spool 28 will be gradually reduced while that of shaft 9 will be gradually increased. The operator is now free to withdraw clutch 34 whereby rotation of spool 3 ceases, and he will thereafter remove said spool and substitute an empty one so as to be ready for the next change in the winding operation.

I claim:

action of the change-speed means when releas- 10 ing the latch.

JULIUS BRENZINGER.

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