US1789867A - Mechanical reversing device - Google Patents

Description

F. .A. GILB Jan. '20, 1931.

MECHANICAL REVERS ING DEVICE W703 ear/M86745 HTTOENEIY 19,28 2 Sheets-Sheei- 1 Filed April 10 Jan. 20, 1931. F, A, lLB 1,789,867

MECHANICAL REVERE ING DEVICE Filed April 10, 1928 2 Sheets-Sheet 2 q TTOKNEY Patented Jan. 20, 1931 PATENT OFFICE FRANK A. GILZB, or Los ANGELES, cannon-111A MECHANICAL REVEBSING DEVICE Application filed April 1-0, 1928. Serial No. 268,997.

This invention, which is termed a mechanical reversing device, isa mechanical organization adapted to impart alternate opposite rotation to a driven shaft from a drive shaft 55 which is constantly rotated in a single direction. This organization is particularly adaptable for usein connectionwith washing machines, etc., in which it is necessary to rotate a machine alternately in opposite directions-over brief periods of time. In ordinary practice, machines of this kind are gen erally reversedin their, operation by reversing the rotation of the drive'shaft, and in case an ordinary steam or gas engine is used,

there is obviously a great loss of power and I time and, consequently, a decrease 1n efflciency incurred in the stopping and reversing of the engme or gear connected therew1th. In case electric motors are used, the motor 1s obviously subject to a constant varying load,

as the reversing of the motor, as'is well known to those famil1arw1th-th1s art, is a source of great power consumption and consequent 1ncrease in expense in proportion to the amount of work which is accurately performed.

ed to automatically impart opposite rotation over brief periods of time to a driven shaft from a drive shaft which is constantly rotated in a single direction.

It is a further object of my invention to develop such an organization which is simple and economical in its construction, positive in its operation, and comprises a minimum of wearing parts.

Other objects and advantages of my invention will be better understood from the following specification and claims.

Referring to the drawings, which illustrate a preferred embodiment of my invention, chosen for illustrative purposes only,

Fig. 1 is a plan view, with a cover member removed.

Fig. 2 is an elevational section along the line 2-2 of Fig. 1.

Fig. 3'is an elevational section along the line 3-3 of Fig. 1.

Fig. 4 is a sectional view along the. line 4-4 of Fig. 3, and Y Fig. 5 is a. sectional vi'ewtaken substantially along theline 5-5 of Fig. 2.

More particularly describing myinvention as herein illustrated, numeral 11 indic'ates a driving organization, such as a motor, having a drive shaft 12 and a driving pinion 13. The mechanical reversing organization generally indicated at 14 is enclosed within a housing .15, comprising a cover member 16 and a bottom member 17, supported in any suitable manner, such as the legs, indicated at 18. r

v The housing 15 is provided with oppositely disposed bearings 19-19, adapted to receive what may term a driven shaft 20. A gear, which I may for the purpose of explanation term a driving gear 21, is rotatably mounted upon the driven shaft 20, and is adapted to be driven by the pinion 13, mounted on the drive shaft 12. V

In order that the driving gear 21 may have an uninterrupted. rotation about the driven shaft 20, friction eliminating means such as the roller bearing organization 22 may be interposed between the driving gear 21 and the driven shaft 20 in a manner-such as is illustrated in Fig. 3.

- Oppositely disposed on either side of the driving gear 21 and mounted upon the driven shaft 20, I provide what Imay term clutch organizations, generally indicated at 30-30.

These organizations, which'are similar in their construction, comprise clutch engaging members 31-31 in the form of collars or sleeves and having clutch engaging faces 32-32 formed therein.

Mounted in the clutch engaging members and enclosed within the collars, are provided what I may term clutch members 33-33. These clutch members are rigidly mounted upon the driven shaft 20 by means such as the keys 34-34:, and may comprise any standard clutch construction, being provided with inner engaging faces 35-35, adapted to engage the clutch engagingfaces 32-32 of the clutch engaging members.

For the purpose of describing this organization, the clutch engaging member 31 1s termed a forward rotating member and is rigidly connected to the driving gear 21 by means such as screws 36, which engage a flange or other suitablyformed projection 37 formed upon the gear 21.

The clutch engaging member 31 is termed a rearward rotating member, and is provided with means for receiving a reverse rotation from the gear 21. The construction of this reverse rotating organization comprises a sleeve 40, which is integrally formed with or ri 'idl attached to the clutch en a 'in mem- C #3 O V C ber 31, and extends inwardlytoward the driving gear 21, terminating in an inner gear 41.

This sleeve 40 is rotatable within an outer collar 43, which is externally provided with gear teeth 44 andwith flattened faces 45- 45, which are received by the upwardly extending prongs 4646 of a yoke member 47 The yoke member 47 is rigidly attached to the bottom housing member 17 by means such as the bolts 48. It will be understood that this collar 43, having the outer gear periphery 44, is held stationary by means of the yoke 47, and for the purpose of later explanation, it will be termed a saationary gear.

A plurality of dual gears 50 are rotatably mounted upon the face of the driving gear 21, which is adjacent to the rearward rotating clutch member 30. These dual gears are retained upon the gear face by means such as the bearing studs 51, and are provided with what I may term an inner gear periphery 52 and an outer gear periphery 53, these mentioned gears being adapted to engage the inner clutch driving gear 41 and the outer stationary gear 43 respectively.

It will be understood from this construction that during the rotation of the driving gear 21, the dual gears 50 are carried about the drive shaft 20 and through the engagement of the outer teeth 53 with the stationary gear 43, the inner teeih 52 will impart a constant rotation to the clutch engaging member 31 through the inner gear 41.

It will be further understood that, by suitably proportioning the size of these gears, the rotation of the clutch engaging member 31 may be of the same annular velocity as the forward rotation of the driving gear'21.

From the foregoing description, it will be seen that the driving gear 21 is constantly rotated in what I may term a. forward driving direction and the clutch organizations 3030 are respectively rotated in a forward and rearward driving direction, and it will be obvious that through the alternate angagement of the clutch members33 and 33' with the clutch engaging members 31 and 31, the shaft 20 may be alternately rotated in opposite directions.

For the purpose of bringing the clutch members 33 and 33 and the clutch engaging members 31 and 31 into alternate firm engagement with one another and maintaining this engagement until such time as the engaged member is automatically released, I provide upon the shaft 20 oppositely disposed slidable collars 6060, which are provided with annular channels 6161, the purpose of which will be hereinafter described. The collars 6060 are adapted to be laterally moved upon the shaft 20 in a direction toward the clutch members 30-30 by means such as coil springs 6262, these springs b'eing'outwardly retained in what I may term fixed collars 63- -63, mounted upon the shaft 20 in any suitable manner, such as by means of pins 64-64.

The slidable collars 60G0 are rendered effective to cause an engagement between the clutch members and the clutch engaging members by means of a plurality of levers 70, which are pivotally mounted upon an outer face, of the clutch engaging members, and are provided with pins 717l, which are adapted to engage the clutch members 3333 upon an inward movement of the levers and to effect thereby a firm engagement between the clutch members and the clutch engaging members, as indicated by the position of the rearward driving clutch organization 30 in Fig. 3.

It will be understood that the springs 62 and 62 are effective to impart a lateral movement to the collars 60 and 60 in one direction only, and it is necessary to provide means for movingthese collars in an opposite, or in the form of the invention illustrated, a clutch disengaging direction.

For this purpose I provide yoke members and 80 which are received by the channels 61 and 61 upon the slidable collars 60 and 60, and are adapted tobe moved laterally by means of cranks 81 and 81, said cranks being rigidly mounted upon rotatable shafts 82 and 82, the shafts being supported in any suitable manner, such as by the bearings 83.

Levers 84 and 84 are outwardly mounted upon the ends of the shafts 82 and 82 and are dapted to receive a partial rotation from slid ble rods 85 and 85, carried in suitable bearing members 86 and 86, and inwardly adapted to engage a cam 87 the cam engag ing end of the slidable rods being optionally provided with rollers 88. The cam 87 is mounted upon a shaft 87', which is inwardly provided with a gear 89 adapted to be driven y a worm 90 mounted upon a worm shaft 91. The worm shaft 91 is outwardly provided with a pinion 92, which is driven through a train of gears indicated by the 1 an alternate lateral movement to the collars 60 and 60 and a consequent disengagement in the oppositely disposed clutch organizations 30 and This cam is preferably so formed, as indicated by the dotted lines in Fig. 5, as to provide a slight hesitant or neutral position between the alternate d1sengagement of the clutch members, thus obviating the possibility of undue wear in the clutch members or the stripping of gears due to the possible simultaneous engagement of both clutch members.

My invention is obviously simple in its construction, has a minimum of wearing parts, is positive in its operation, and meets a need in industry for an organization which will effect an automatic reversal in driven shaft rotation from a uni-directionally rotated drive shaft, and it will be understood that. while I have herein described and illustrated one specific embodiment of my invention, various modifications of the same may be readily adapted by those familiar with the vrt without in the least departing from the spirit and scope of my invention as described above andin the following claims.

I claim as my invention:

1. A mechanical reversing device comprising: a drive shaft; a driven shaft; a drive pinion on said drive shaft; a drive gear rotatable relative to said driven shaft and engaging said pinion; clutch members mounted on said driven shaft; means operable by the rotation of said drive gear for rotating said clutch members in opposite directions; and automatic means rendering said clutch members alternately operable to impart rotation from said drive gear to said driven shaft, said automatic means comprising rotatable shafts, cam means operable by said drive gear and adapted to impart a partial rotation to said shafts, and means mounted between said cam rotated shafts and said clutch members adapted to move said clutch members laterally upon said driven shaft.

2. A mechanical reversing device comprising: a drive shaft; a driven shaft; a drive pinion on said drive shaft; a drive gear rotatable relative to said driven shaft and engaging said pinion; clutch members mounted on said driven shaft; means operable by the rotation of said drive gear for rotating said clutch members in opposite directions; and automatic means rendering said clutch members alternately operable to impart rotation from said drive gear to said driven shaft, said automatic means comprising rotatable shafts, cam means operable by said drive gear and adapted to impart a partial rotation to said shafts, and crank members rigidly mounted upon said cam rotated shafts in engagement with said clutch members and adapted to impart lateralmovement to said clutch members shafts. V

3. A mechanical reversing device comprising: adrive shaft; a driven shaft; a drive pinion on said drive shaft; adrivegear rotatable relative to said driven shaft and engaging said pinion; clutch. members mounted on said driven shaft; means operable by the during'the rotation of said rotation of said drive gear for rotating said clutch members in opposite directions; and

automatic means rendering said clutch members alternately operable .to impart rotation from said drive gear to said driven shaft, said automatic means comprising rotatable shafts, cam means operable by saiddrive gear and adapted to impart a partial rotation to said shafts, c'ranl: members rigidly mounted upon said cam rotates shafts in engagement with said clutch members andadapted to impart lateral movement to said clutch members in one direction, and resillent means-for. im-

parting lateral movement to said clutch members in an opposite direction.

at. A mechanical reversing device comprising: a drive shaft; a driven shaft; a drive pinion on said drive shaft; a drive rotatable relativeto said driven shaft and engagii'ig said pinion; clutch members mounted on said driven shaft; means operable by the rotation of said drive gear for rotating said clutch members in opposite directions; and automatic means rendering said clutch members alternately operable to impart rotation from said drive gear to said driven shaft, said automatic means comprising cam means operable by said drive gear for imparting lateral movement to said clutch members in one direction, and coil springs engaging said clutch members and adapted to impart lateral movement thereto in a direction opposite to the movement of said cam means.

5. A mechanical reversing device comprising: a drive shaft; a driven shaft; a drive pinion on said drive shaft; a drive gear rotatable relative to-said driven shaft and engaging said pinion; clutch members mounted on said driven shaft; means operable by the rotation of said drive gear for rotating said clutch members in opposite directions; and automatic means rendering said clutch members alternately operable to impart rotation from said drive gear to said driven shaft, said automatic means comprising rotatable shaft members, levers rigidly mounted on said shaft members, slidable members in engagement with said'levers, a cam rotatable by the rotation of said drive gear adapted to impart sliding movement to said slidable members, and cranks ri 'idlyemounted on 6. An organization for imparting alternate opposite rotation to a driven shaft comprising: a driving gear concentric with and rotatable about said driven shaft; means for imparting uni-directional rotation to said driving gear; a forward driving clutch engaging member rotatably mounted on said shaft in rigid engagement with said driving gear; a rearward driving clutch engaging member rotatably mounted on said shaft; gears interposed between said driving gear and said rearward driving clutch engaging member for imparting a reverse rotation to said clutch engaging member; clutch members rigidly mounted on said driven shaft and adapted to be engaged by said clutch engaging members; and automatic means for bringing said clutch members into alternate engagement with said clutch engaging members, said automatic means compriscam means operable by the rotation of said driving gear to impart lateral movement to said clutch members in one direction and resilient means for imparting lateral movement to said clutch members in an opposite direction.

In testimony whereof, I have hereunto set my hand at Los 'Angeles, California, this 28 day of March, 1928.

FRANK A. GILB.

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