US1444573A - Transmission apparatus - Google Patents

Description

Feb..- 6, 1923.

M. T. VOIGT. TRANSMISSION APPARATUS. FILED sEPT.10. 1921.

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LUUIES ERANKEL, @F

TRANSMISSON APPARATUS.

Application ledseptember 10, 1921. Serial No. 499,747.

To all whom 'it may concern: A

Be it known that l, MAX T. VOIGT, a citizen of Germany, and a resident of Reading, in the county of Berks and State of Pennsylvania, have invented a certain new and useful rFransmission Apparatus, of which lthe following-is a speciication.

The Jinvention relates to apparatus for transmitting power froma continuously op- -isms adapted to be operated therefrom, and

o means`whereby any one of said mecharating line shaft to a plurality of mecha.-

'nismsg may be individually placed Sin operative relation tothe shaft, or disconnected l therefrom, without affecting any others of the mechanisms, and is more particularly directed to sewing machine benches or tables in which a numberA of lmachines are operated from a single line shaft belovsr the bench, and to which the each individualsewing machine may be operatively connected to or disconnected from the shaft at the'will of the individual operator. rllvhe apparatus of. the present invention is of the samegeneral type as that illustrated and described in my copending application orPatent Serial Number 855,141, liledJanuary 30, 1920. i

The objects of the present invention are to` provide 3a device of the character described which is compact in structure; having means for automaticallyalining the line shaft; wherein strains and stresses will evenly distribute; which will be `easyy running:'which may be easily secured to, -or released from, the shaft; in-which the clutching and releasedmechanisms' will be centrally alinedgvwhich vwill be cheap to construct; which will not easily get out of or der; which may be easily' repaired, and which will have but few parts.

- These and further objects will more fully l appear inl the following specification and accompanying drawings considered together or separately. y

One embodiment of the invention' is illustrated. in the accompanying drawings, in which like parts in all of the several figures are designated by similar characters of reference, and in which y Fig. 1 is a side elevation of a sewing ma- 5o chine bench illustrating the invention in position thereon.

Fig. 2 is a vertical longitudinal 'section of the device.

Fig. 3 is a half section onthe line 3--3 ofI 55 Fig.' 2,\andv l "Y Fig. 4L is a horizont-al section taken on theL line el-iE of Fig. 2. In Ythe embodiment of the invention illustrated, 1 designates a sewing machine 60 bench or table of any desired construction supported upon legs or supports 2 as is common andsaid bench carries a plurality of sewing machines, each provided with a driving pulley 3. The supports v2 are disposedf at proper intervals preferably' one in the vi-y cinity of each sewing machine, and each support carries a bracket 4. Secured to Veach bracket Iis a standard or pedestal 5 having a-pair of spaced vertical 70 arms 6 and a pair of spaced horizontally` eX- tending perforated lugs 7.

Pivoted on conical ended bolts 8 carried in the arms r6 is a shaft bearing comprising a cylindrical shell "9 having a conically recessed extension 10 in axial'alinement therewith. A portion of the lextension is cut away forming an opening 11. The shell 9 is provided with a. cap 12 secured thereto by means of screws 13, and said cap has an aX- ial cylindrical sleeve 14 provided with a plul ality of longitudinal slots 15. The bore of the shell 9 carries a ball race'with which a series of balls 16 engage-, and said balls cooperate with a ballrace carried on ,one end of a` tubular bnshing 17 which encircles a line shaft- 18 w ich extends the entire length of the bench 1 and from which yall of the sewing machines are' driven.

The end of the bushing 17 opposite the' shell is provided with aplurality of longitudinal slots 19. lts extreme end is tapered and back of the tapered portion is screw threaded for the reception of a nut 20 having a portion of its borel cylindrical and screw theaded, and the outer portion of its bore conical. The nut when screwed up on the bushing will,.by the engagement of the conical portion of its bore with the tapered end of the bushing compress the latter into intimate engagement with the shaft. A

set screw 21 may be employed to secure the nut against rotation. The shell 9 forms the actual bearing for the shaft, of which'the bushing 17 is a part, and because of its pivotal connection with the pedestal 5 will auto; matically aline the shaft 18. The cap 12 carries a felt washer which will prevent the entrance of grit lto the ball bearings.

Rigidly secured to, and axially alined with the shell 9 is a tubular stud 22 extending in I the direction opposite the sleeve 17. The

stud 22 is 'of mich internal diameter as to clear the shaft 18. Rotatably and slidably mounted on the stud 22 is a tubular carriage 23 on which is carried, by means of ball bearings, a pulley 24 over which runs a belt 25, which also engages the pulley 3 and by means of--Which the sewing machineis driven in the usual manner.

The free end of the `tubular stud 22 is provided with a peripheral flange 26, and

a coil spring 27 encircles the stud and bears against the said .flange and the end of the tubular 'carriage 23.

Rigidly secured to one side lof the pulley 24 is a conical brake 28 adapted to cooperate -`With the conical recess in the extension 10 of thel shell 9 which forms the female member of the brake;

Carried' bythe opposite sideof, and rigidly secured to, the pulley 24`is`a member 29 having a conical recess therein in axial alinement with the shaft 18. The member 29 forms the female portion' ofv a clutch, the

male member of whlch is a conical rim 30 supported on a hub 31 which is rigidly se cured tothe 'shaft 18`as by means of a set screw 32.y T

When the pulley member 24 is moved to the left in Figs; 1, 2 and 4 the female clutch member 29 will engage the male clutch memthe crutch are slottedas at 34, and the slots engage pins 35 extending diametrically from the tubular carriage 23.- The extremities of the crutch arms are rounded for engagement with the pulley member 24. The long arm 36 of the angle lever is, by means of a rod 37 operatively connected to a pedal 38 of any approved type.

When that end of the pedal towhich the rod 37 is attached is depressed by the foot riage 22 in the opposite direction, the clutch ing surfaces of 29 and 30 will be disengaged, and the brake member 28 will be caused to engage the stationary brake member 10 and the operation of the sewing machine will be arrested. i

The movement of the carriage 23 carrying the pulley 24, from the clutching to the Vbraking position and vice versa, is extremely slight, and will have no ill effect on the travel of the belt 25.

Either of the clutch members and either of the brake members may be provided with` the usual shoe, or lining, as the case may be, toincrease the friction of the parts.

For convenience the apparatus of the invention is shown employedv in connection with a sewing machine bench, but it is to be understood that the device is not limited to Such use, but may be employed in any situation where a plurality of individually at' tended machines are driven from a common power shaft. i

IThe shaft 18 may be driven in any desired manner, and the direction of rota-tion of the shaft will have no effect on the oper` ation 4of the device.

In accordance with the provisions of the patent statutes,I have described the principle of my invention together with the apparatus which I now consider to represent the best embodiment thereof; 4but I ydesire to havejt understood that the .apparatus shown is merely illustrative and that the invention may be carried out in other ways` The invention having been described what is claimed and desired to be secured by Let-ters Patent, is :-v` I 1'. An apparatus of the character described, comprising a rotating shaft, a member forming a portion of the shaft, a rela` tively stationary element, said member having a bearing-in said element, a devicel carried by said element and rotatable relativelythereto, and means for coupling said device to said element whereby the shaft will rotate relatively to the device.

2. An apparatus of the character described, comprisinga rotating shaft, a mem-l ber forming a portion of the shaft, a rela` able relatively to the element, means for clamping the bushing to the shaft, and means for automatically coupling the pulley to the element whereby said Shaft and bushing will rotate relatively to the element.

4. An apparatus of the character de# f scribed, comprising a rotating shaft, a tubular bushing surrounding the shaft, a stationary element in which the bushing is ournalled, a pulley mounted on and movable relatively to the element, a iut for clamping thebushing to the shaft, and meansvfor automatically coupling the pulley tothe element whereby said shaft and bushing will rotate relatively to the element.

5. An apparatus `of the character de` scribed, comprising a rotating shaft, a tubular bushing surrounding the shaft, a stationary element in which the bushing is journalled, a -pulley mounted on and niovv able relatively to the element, a nut having a tapered borefor clamping thev bushing to the shaft, and means for automatically coupling the pulley to the element whereby said shaft landdbushiiig will rotaterelatively to the element.

6. An apparatus of the character described, comprising a rotating shaft, a tubular bushing surrounding the shaft, said bushing having a tapered extremity', there being slots in the extremity of the bushing, a stationary element in which the bushing is journalled, a ulley mounted on'and mov'- able relatively to the element, a nut for engaging the tapered extremity of the bushing and clamping the bushing to the shaft,

and means for automatically coupling the pulley to the element whereby said shaft and bushing will rotate relatively to the element.

'means for engaging tlfe pulley to break the.

connection between the bearing and pulley and for causing the latter to rotate with the shaft.

8. An apparatus of the character described, comprising a rotating shaft a bearing for the shaft, a tubular stud carried by the bearing, said stud surrounding and extending longitudinally of the shaft, an abutment on the stud, a tubular carriage slidably mounted on the stud, a pulley, said carriage forming a journal for the pulley, a brake member carried by the shaft bearing, a brake member carried by the pulley7 and a coil spring encircling the stud and bearing against the abutment and carriage whereby the brake members will be normally engaged one with the other. 9. 'An apparatus of the character described,'comprising a rotating shaft, a bearing for the shaft` said bearing being pivoted in a plane perpendicular to the axis of the shaft, a tubular stud carried by the bearing in axial alinement with the shaft, said shaft passing through the stud, there being clearance between the bore of the stud and the shaft, an abutment on the free extremity of the stud, a tubular carriage mounted on the stud, a spring coiled around the stud and abutting against the'abutment and the carriage, aclever for moving the' carriage longitudinally of the stud to compress the spring, said lever acting to prevent relative rotation of the stud and carriage.

10. An apparatus of the character described, comprising a rotating shaft, a bearing for the shaft, said bearing being pivoted in a plane perpendicular tothe axis of the shaft, a tubular stud carried bythe bearingl in axial alinement with the shaft, said shaft passing through the stud` there-being clearance between the bore of the stud and the shaft, an abutment on the free extremity of the stud, a tubular carriagey mounted on the stud, a spring coiled around the stud and abutting against thef abutment and the car' riage, a lever, pins projecting diametrically from said carriage, a crutch on said lever,

nally of the'stud to compress the spring,the

engagement of tlie pins with said lever acting to prevent relative rotation of the stud and carriage.

`11.An apparatus o-f the character described, comprising a pedestal, a bearing member pivoted in the pedestal, a shaft, a bushing on the shaft, aportion of said bushing being flexible, a nut threaded on the bushing whereby said bushing will engage jthesliaft, ball bearings between the bearing member and the bushing, a carriage carried on the bearing member and movable relatively thereto, a pulley carried on the carriage, ball bearings between the carriage and the pulley, a brake member on the bearing,

a cooperating brake member on the pulley, i

a clutch member on the pulley, a eonperating enclosed by the bearing brake member for engaging the pulley clutch member with the shaft clutch member, and means carried by the bearing member for engaging the pulley brake member with the bearing brake member.

rlhis speeifcation signed and witnessed clutch member secured to the shaft, means this 6th day of September, 1921.

- MAX T. VOIGT. Yitnesses:

ISAAC FRANKEL, MOE COHEN, ARTHUR J. NATHAN, CHARLES WINTER.

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