US1320194A - Driving-mechanism fob sewing and other like machines - Google Patents

Description

M. AXFLROD. DRIVING MECHANISM FOR SEWING AND OTHER LIKE MACHINES. APPLICATION FILED OCT- 30, 1918.

1,320,194. Patentd Oct. 28,1919.

.FIGEZ- INVENTOR MEYER, AXILR OID, READING, PENNSYLVANIA.

I DRIVING MEcHANisM ron'sEwINe AND ornna LIKE MACHINES.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed October 30,1918. Serial No. 260,258. I

To all whom it may concern. I j

Be it known that I, MEYER .AxiLaon, a citizen of the United States, and a resident of Reading, in the county of Berks-and State of Pennsylvania, have invented "an Improvement in Driving Mechanism for Sewing and otherlike Machines, of which the following'is a specification.

My invention relates to improvements in (lIlVIIlg mechanism for drivln and operat- 1n sewing mach nes and t er l1'ke'ma chmes to which it is adapted.

. The object of my invention is tofsimplify the Construction of such devices by reducing the number of parts of which such mechanism is composed and by producingthe same in a more compact form.'

A further object of my invention'is to eliminate gears and also to provide means whereby the speed. of operation of the machine or' machines operated and driven by the said mechanism may be readily v varied and controlled.

' should behad to the accompanying drawing Other objects. and advantages of my invention will be referred to and pointed out .in the detailed description thereof which follows or'will be apparent from'such de' scription.

In order thatmy inventionmay more readily understood and its practical advantages more fully appreciated, reference in" which jI have illustratedone .formyof mechanical embodiment. of myinvention,

but it will be understood that thesame is susceptible. of embodiment'in other forms of construction than that shown within the j' scope of the claims. 1 In'the drawing J F'gure- 1is a view in top .of'asewing ma-chine head and of the. driving mecha- 7 partially broken away in order to show the Fig. 2 is aview 1n nism for driving "and operating the same,

such mechanism .being shown partly in horizontal section, the table .uponwhich the sewing machine .head is supported being driving mechanism.

ing the manner in which: the'idriving mechanism is drivenandoperated and indicat Ting theta single driving means'may operate a r r hty f th e i t rieg eehe i m v 0 2 n 31s a, transverse s ti View taken on the line 3-3 of Fig, 1, l i j Referring to the drawing lfdesignates a table top or other similar support for supporting the sewing machine 2 or other machine which may be driven and operated by the operating mechanism. 3 designates apulley provided with a hub 4 whichis mounted in a bearin 5 formed by coiiperating parts of the twln brackets 6 and 7' which are secured to the underneath side of the table 1 by means of supporting bolts 10. The pulley preferably is provided with flanges 11 forming a groove in which the endless driving belt 12 runs to drive the said pulley. p

In Fig. '2 I have indicated a couple of these pulleys 3, but it will be understood that the number may be increased as desired because in practice a number of machines preferably driven by a single endless driving belt such as 12.

15 designates a driving friction disk whlch is secured upon one end of a bar 16 having slidable engagement with the pulley 3' and its hub 4. The said bar is, in the construction shown, connected with the pulley 3 and its hub 4 to rotate therewith by means of a spline pin 17 The disk 15 is adapted to engage the periphery of a friction disk 20', preferably offiber, whichis adjustably securedfto a driving shaft 21 mounted in bearings 22 upon the brackets 6 and 7.

r 'The shaft 21 is provided with a grooved pulley 25 over which a driving belt 26 operates to drive a pulley 27 secured upon the fdriving shaft of the sewing machine 2. By

meansof 'a coiled spring 30 which is coiled "around the outer projecting end of the bar 16, one end of which bears against a flange or collar 31 upon the said bar and the other end-of which against the outer end of the hub 4, the bar 16 and the disk 15 secured thereon are held in their outermost positions. When in this position, .the disk side elevation show 1 15 does not contact with the friction disk 20. As a result the pulley and the disk 15 having operative connection therewith as shaft 21 upon which it is supported.

In order'that the bar 16 may be caused to as We 4 1 9 1 2 12 e the P -a 3 described may and do rotate, but without 7 efie'c't upon the friction disk 20 and the in opposition to the spring 30 for the purpose of causing the disk 15 to engage the friction disk 20, I have provideda lever 34, pivotally supported intermediate its ends at 35 upon a projection 36 from the bracket 7 One end portion 38 of said lever is in engagement with the outer end of the bar 16, as clearly shown in Fig. 1 of the draw ing. The portion of said lever '34 on the opposite side of the pivot 35 is engaged by the upper end 40 of the upwardly extending arm of'a bell crank lever 41 which is pivoted at 42. The other arm of said lever extends horizontally and constitutes a foot treadle 43 by -means of'which the lever 41 maybe moved pivotally to operate the lever 34 to effect sliding movements of the bar 16 to effect engagement and disengagement of the 7 disk 15 with and from the friction disk 20.

In order to automatically brake the shaft 21' when the disk 15 is disengaged from the friction disk 20, I have provided the outer endportion of the lever 34 with an nwardly extending, projecting portion 45,wh1ch,when

- moved inwardly, by the action of the spring 30 moving the end portion 38 thereof outwardly, engages the outer end of a friction rod 46 supported in bearings 47 upon the bracket 7. The inner end of said. friction rod is provided with a friction member 50 which is adapted to contact with a brake disk 51 securedupon the shaft'21.

a so that the latter is driven, causing rota-1 Aspring 52 interposed between the outer bearing 47 and a laterally extending lug 53 upon the outer end of said friction rod tends to hold the said: rod in outer position with the friction member 50 out of contact with the friction disk 51; Consequently when downward pressure is exerted upon the treadle 43 to cause outward swinglng movement of the upwardly extending arm of the bell crank 41 to cause outward swinging movement of the end of the lever 34 and inward swinging movement of the end 38 thereof, it is apparent that the. spring 52 will cause outward sliding movement of the friction rod 46 to disengage the friction member from the friction disk 51. Simultaneously, the disk 15 -is moved into engagement with the friction disk20 tion of the shaft 21 to drive and operate the machine 2, whether it be a sewing machine or some other character of machine.

Inthe construction shown, the belt 12 is caused bymeans of the idler rollers to extend partially around the pulleys 3. An

idler roller 61 holds one side or span of the belt in spaced relation with respect to the pulleys. The belt 12 is driven by'means of a drum or drive wheel 62, preferablymotor; suitable power may driven. Howevenany be employed. Y a

In order to take-up the slack of the belt 12, I have provided anidler pulley 63supported upon swinging, weighted, take-up arms 64. The weight is shown at 65.

It is apparent that the spring 30 is stronger than the spring 52 so that when pressure is removed from the treadle 43 the expansive force of the spring 30 causes pivotal movement of the lever 34 in opposition to the spring 52 to cause inward movement of the friction rod 46 to apply the brake 50 and thus quickly stop the operation of the machine.

7 It will be understood that any other preferred arrangement of the driving belt 12 with respect to the pulleys 3 for driving the latter may be employed.

By adjusting the friction disk 20 along the shaft 21' so that its position with rep 1. In drivingmechanism," in combination, a pulley, means for drlvmgthe same, a bar extending axially through the said pulley, said bar being slidable, means for causing rotation of said bar with the 'said pulley, a

. shaft, means wherebyrotation of said pulley and bar causes rotation of said shaft, means for causing slidable movement of the said bar through said pulley, a brake for controlling rotation ofisaid shaft, and means whereby movement of the last mentioned means operates to control the said brake.

2. In driving mechanism, in combination, a driving disk, means for causing rotation .ofsaiddisk, a driving shaft, a frictiondisk mounted on said .shaft, a brakeidisk also mounted on said shaft, means forengaging and disengaging the said driving disk with and from the said friction disk, a brake and means for simultaneously disengaging the same from said brake disk as the driv ing disk isjmoved into engagementrwith the said friction disk. and for moving the same into engagement with said brake disk-when V the said. driving. disk is moved out of .en-

gageme'nt with said friction disk.

. 3,,In driving mechanism, in combination, a driving disk, means for causing rotation of said'driving disk,a driving shaft, a frictiondisk mounted upon said shaft which is adapted to be engaged by the said driving disk, a brake disk also ,mountedon said driving shaft, means for. normaly holding the said driving disk out of engagement with the saidfriction disk, means forjmoving said driving disk into engagement with the said friction disk, a brake and means adapted to be actuated by the last mentioned means for applying said brake to said brake disk upon disengagement of the said drivin disk from the said friction disk. 7

4. In driving mechanism, in combination, a pulley, means for causing rotation of said pulley, a bar slidably supported in an aXial opening through said pulley, means for causing rotation of said bar with said pulley, a driving disk supported upon the inner end of said bar, a driving shaft, a friction disk supported upon said shaft and adapted to be engaged by the said driving disk, means whereby said friction disk may be adjusted so as to position the same nearer to or farther from the axis of rotation of said driving disk, a brake disk also supported upon said driving shaft, a spring normally holding the said driving disk out of engagement with the said friction disk, a brake adapted to be applied to the said brake disk, a lever pivoted intermediate its ends, means for causing pivotal movement of the said le- I ver, one end of said lever being in engagement with the said bar so that swinging movement of said lever causes sliding movement of said bar to effect engagement and disengagement of the said driving disk with and from the said friction disk, and means intermediate the opposite ends of said lever.

and the said brake whereby swinging movements ofsaid lever also operate to control the application of said brake to the said brakedisk, substantially as described.

" 5. In driving mechanism, in combination,

a plurality of pulleys arranged in series, a driving disk supported upon and driven by each of said pulleys, a plurality of driving shafts, means whereby the said driving shafts are driven from the respective driving disks, means whereby any one of said driving disks may be operatively disengaged from the said shafts without affecting any one of the other of said shafts, and a common driving means for driving all of said pulleys, substantially as described.

6. In driving mechanism, in combination, a plurality of driven devlces arranged in series, a driving disk supported upon and driven by each of said devices, a plurality of driving shafts, means whereby the said driving shafts are driven from the respective driving disks, and a common driving means for driving all of the said driven devices.

7 In driving mechanism, in combination, a plurality of driven devices arranged in series, a driving disk supported upon and driven by each of said devices, a plurality of driving shafts, means whereby the said driving shafts are driven from the said driving disks, means whereby any one of said driving disks may be operatively disconnected from the said shafts without alfecting any one of the other said shafts, and avcommon driving means for driving all of said driven devices.

8. In driving mechanism, in combination, a plurality of pulleys arranged in series, a driving disk supported upon and driven by each of said pulleys, a plurality of driving shafts, means whereby the said driving shafts are driven from the respective driving disks, and an endless driving belt engaging with and driving all of said pulleys.

In testimony that I claim the foregoing as my invention, I have hereunto set my name this 25th day of October, A. D. 1918.

MEYER AXILROD.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

Images