US2107417A

US2107417A - Change speed driving mechanism

Info

Publication number: US2107417A
Application number: US106717A
Authority: US
Inventors: Alexander F Kaptuller
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-10-21
Filing date: 1936-10-21
Publication date: 1938-02-08
Anticipated expiration: 1955-02-08

Description

Feb. 8, 1938. A. F. KAPTULLER 2,107,417

CHANGE SPEED DRIVING MECHANISM I 2 Sheets-Sheet 1 Filed Oct. 21, 1956 Feb. 8, 1938. A. F. KAPTULLER CHANGE SPEED DRIVING MECHANISM Filed Oct. 21, 1936 2 Sheets-Sheet 2 Patented Feb. 8, 1938 UNlED STATES PATNT OFFIQE 10 Claims.

My invention relates to driving mechanism and particularly to a change speed driving mechanism for use in connection with an electric motor, and it has for its object the provision of. a new 5 and improved form and arrangement of parts making up a driving mechanism of unit form capable of use to very great advantage for new installations and also adapted to be substituted advantageously in connection with old installations of motors and driving mechanism with only a minimum change of arrangement.

It is one of the objects of my invention to provide an improved mechanism of this type of such compact form as to enable it to be employed at points where the available space is limited, and so arranged that ample support is provided for the moving parts so as to cut down vibration and noise to a minimum. It is one of. the objects of my invention to provide an improved construc-- tion of change speed driving mechanism of compact form with the driving pulley of the mechanism positioned closely adjacent to the end of the motor in substantially the same location as that usually occupied by the driving pulley of 25 an arrangement comprising a motor and its drive means but not involving change speed mechanism, the arrangement being such that a change speed drive of my improved type can very readily be substituted in place of an old arrangement in which no change speed mechanism was employed. It is another object of my invention to provide an arrangement of this type involving also a reverse speed mechanism having a cooperative relation with the remaining parts 3 whereby either forward or reverse driving may be effected at any one of the plurality of speeds of driving available.

It is another object of my invention to improve devices of. this type in sundry details hereinafter pointed out. The preferred means by which I have accomplished my several objects are illustrated in the drawings and are hereinafter specifically described. That which I believe to be new and desire to cover by Letters Patent is set forth in the claims.

In the drawings,

Fig. 1 is a central vertical sectional view through the preferred form of my improved mechanism in position on the end of a motor partly broken away;

Fig. 2 is a vertical sectional view taken substantially at line 2-2 of Fig. 1;

Fig. 3 is a view of one of the clutch shifting levers as seen from the left in Fig. 2; and

Fig. 4 is a vertical cross sectional view taken at line 64 of Fig. 1.

Referring now to the several figures of the drawings in which corresponding parts are indicated by the same reference characters, H] indicates an electric motor of any approved type having a pinion l I mounted upon its armature shaft l2. In the arrangement shown, frame bars 53 and M are secured on the end of the motor I at opposite sides of the armature shaft l2, being connected at their outer ends with a vertically positioned frame plate l5. Upon the outer face of the plate I I have mounted a housing member it in the form of a shell which serves both as a housing and as an extension of the framework longitudinally of the axis of. the motor.

Within the framework comprising the plate l5 and the shell it, I have mounted a hollow shaft ll, such shaft being mounted at its inner end by means of a ball bearing l8 carried by the plate l5 and being mounted at its outer end by means of a ball bearing device is mounted in a flange 20 formed upon the outer end of the shell IS. A second shaft 2! is located Within the hollow shaft ll, being supported at its inner end by means of a ball bearing 22 carried by the hollow shaft and being supported at its outer end by means of a ball bearing 23 carried by a ring 24 comprising an extension of the end flange 20.

At the inner end of the hollow shaft I1, I have provided a cylinder 25 which in the arrangement shown is formed integrally with the hollow shaft, such cylinder being concentric with the axis of the shaft so as to serve effectively as a driving pulley whereby power may be delivered from the motor through the medium of a belt 26. Upon the inner end of the shaft 2! inside of the hollow pulley 25, I have mounted a transverse plate 2? which in the arrangement shown is formed integrally with the shaft 2|. Upon the inner face of the plate 27, I have mounted an internal gear 28 of such form as to have effective driving engagement with the pinion l I of the motor H] for driving the shaft 2! at a reduced rate by the power of the motor. In the arrangement shown, the gear 28 and pinion II are located completely within the hollow pulley 25 so as to avoid any increase in the length of the mechanism by reason of their use.

Upon the outer end of the shaft 2 l, I have revolubly mounted a clutch casing 29 which is connected by means of a plate clutch 30 with the shaft 2|, the plate clutch so being of any approved form by which the casing 29 may be effectively connected with the shaft. Operating means for the clutch of the usual form are provided, such operating means comprising a drum 3| and a lever 32 by which the drum may be forced toward the left for pressing the clutch plates into cooperative relation for driving the casing 29 from the shaft 2|. In the arrangement shown, the clutch lever 32 is mounted upon a cap 33 which serves as a means for closing the outer end of the shell l6. 7

Within the shell |9 alongside of the hollow shaft |1, I have revolubly mounted a counter-shaft 34, such counter-shaft in the arrangement shown being supported by a ball bearing 35 mounted in the flange 29 and a ball bearing 36 mounted in the plate l5. This counter-shaft is provided with

pinions

31, 38, 39 and 49 which are loosely mounted on the shaft, clutch mechanisms 4| and 42 being provided for connecting any one of such pinions with the shaft as may be desired. As is clearly shown in Fig. 2, each of the clutch mechanisms 4| and 42 comprises a yoke 43 which is swingingly mounted upon a rock shaft 44 having a clutch lever 45 mounted on its outer end whereby the movable member of the clutch can'be thrown into and out of clutching engagement with its cooperating parts. The lever 45 is normally held in adjusted position by means of a spring pressed pin 46 carried by the wall of the shell l so as to engage any one of a plurality of openings 41 in the lever.

Upon the hollow shaft I1, I have mounted

gears

48, 49, 55 and 5| which engage the

pinions

31, 38, 39 and 49 respectively, said gears being rigidly secured upon the hollow shaft H by means of a key 52 as is clearly shown in Fig. 1. As willbe readily understood, by a selection of the

pinion

31, 38, 39 or 49 to be connected'with the countershaft 34, thespeed of rotation of the hollow shaft 61 as driven by the counter-shaft 34 can be regulated.

Operative driving connections are provided between the clutch housing 29 and the countershaft 34 by means of a gear 53 mounted upon the clutch housing and a gear 54 mounted upon the counter-shaft, such gears in turn being connected by auxiliary gearing as best shown in Fig. 4. This connecting gearing comprises a ring 55 which is revolubly mounted about a hub portion of the ring '24, the ring 55 being held in position with respect to the ring portion 24 and the flange 29 by means of a keeper plate 56 engaging the upper portion of said ring 55 as is clearly shown in Fig. 4. Upon the ring 55, I have mounted a pinion 51 at one side and two intermeshing

pinions

59 and 59 at the opposite side, the pinions 51 and 58 being in meshing engagement with the gear 53. At one side of the ring 55, Ihave provided an arm 99 which extends outwardly through the wall of the housing member I6, being provided at its the pinion 59 is brought into outer end with a spring pressed pin5| adapted to engage any one of a plurality of openings 52 in said wall so as to hold the ring 55 from rotary movement. The arrangement is such that when the parts are in the position as shown in Fig. 4, the pinions 51 and 59 are both out of mesh with the gear 54. When the ring 55 is rotated in clockwise directionin Fig. 4 from the position as shown, the pinion 51 is brought into mesh with the gear 54 so as to drive the counter-shaft 34 in one direction from the shaft 2|. 'Upon rotary movement of the ring in the opposite direction, operative meshing engagement with the gear 54 for driving the counter-shaft in the opposite direction, by power from said shaft 2|. The arrangement is such 'tions between said second and that the pinion 51 is held in mesh with the gear 54 when the pin 6| is in the uppermost one of the openings 62, while the pinion 59 is held in operative meshing engagement with the gear 54 when the pin BI is in the lowermost opening 62.

As will be readily understood, when the motor I9 is in operation so as to drive the pinion H, the shaft 2| is driven by said pinion at a reduced speed of rotation. With the clutch 32 closed so as to connect the casing member 29 with the shaft 2 l and with the pinion 51 in mesh with the gear 54, the counter-shaft 34 is driven in the same direction as the shaft 2| and at the same speed. In the arrangement shown, the pinion 31 and the gearv 4B are of the same diameter so as to provide for driving the hollow shaft I! in either direction at the same speed as that v is being driven. The relative sizes of the remaining pinions 38, 39 and 40 and their cooperating

gears

49, 53 and 5| are such that by the use of a different set of cooperating parts the speed of rotation of the hollow shaft |1 may be varied considerably with respect to the speed of rotation of in which the driving pulley is mounted directly at the end of the motor, power being delivered to such driving pulley through the medium of a hollow shaft along which change speed mechanismis arranged, a high degree of compactness is provided. In my improved arrangement as shown, the drive shaft 2| and the hollow shaft H are both effectively supported so as to out down the noise and vibration to a minimum. By my arrangement, the overall length of the driving mechanism is made very small. By reason of the location of the driving pulley closely adjacent to the end of the motor, I am enabled very readily to substitute my improved mechanism in place oflan installation not provided with change speed mechanism, the substitution requiring in many cases nothing other than an adjustment of the length of the driving belt.

While I prefer to employ the form and arrangement of parts as shown in my drawings and as above described, it is to be understood that my invention is not limited to such form and arrangement except as it may be so limited by the claims, it being understood that changes might well be made from the arrangement shown without departing from my invention.

I claim:-

1. In a change speed driving mechanism for a motor, the combination of a frame member,

a hollow shaft rotatably mounted on said frame member, means for mounting said frame member in position for supporting said hollow shaft in parallel relation to the axis of the motor eccentrically thereof, a second shaft extending through said hollow shaft and revolubly supported at its outer end by said frame member beyond the end of the hollow shaft, a cylinder rigidly mounted on said hollow shaft concentrically thereof at the end portion adjacent to the motor serving as a driving pulley for said hollow shaft, gear means located largely inside of said cylinder for connecting said second shaft with the motor for driving the shaft, a third shaft revolubly mounted on said frame member alongside of said hollow shaft, driving connecthird shafts, and change speed driving connections between said hollow shaft'and said third shaft.

2. Ina'change speed driving mechanism for a motor, the combination of a frame member,

at which the shaft 2| a hollow shaft rotatably mounted on said frame member, means for mounting said frame member in position for supporting said hollow shaft in parallel relation to the axis of the motor eccentrically thereof, a second shaft extending through said hollow shaft and revolubly supported at its outer end by said frame member beyond the end of the hollow shaft, a cylinder rigidly mounted on said hollow shaft concentrically thereof at the end portion adjacent to the motor serving as a driving pulley for said hollow shaft, an internal gear mounted on said second shaft largely inside of said cylinder adapted by meshing engagement with the driving pinion of the motor to rotate said second shaft, a third shaft revolubly mounted on said frame member alongside of said hollow shaft, driving connections between said second and third shafts, and change speed driving connections between said hollow shaft and said third shaft.

3. In a change speed driving mechanism for a motor, the combination of a frame member, means for mounting said frame member rigidly in position with respect to the motor at one end of the motor, a hollow shaft rotatably mounted on said frame member in parallel relation to the axis of the motor, a second shaft extending through said hollow shaft having a driving connection at one end with said motor and revolubly mounted at its opposite end in said frame member beyond the outer end of the hollow shaft, a third shaft revolubly mounted on said frame member alongside of said hollow shaft, driving connections between said second and third shafts for driving the third shaft in either direction from said second shaft, and change speed driving connections between said hollow shaft and said third shaft.

4. In a change speed driving mechanism for a motor, the combination of a frame comprising a plate and a housing member secured to the plate and extending from one face thereof, means for mounting said frame rigidly on said motor at one end of the motor, a hollow shaft extending through an opening in said plate and through said housing and rotatably mounted at its inner end in said plate and at its outer end in said housing, a second shaft extending through said hollow shaft having a driving connection at one end with said motor and revolubly mounted at its opposite end in said housing beyond the outer end of the hollow shaft, a third shaft extending through said housing alongside of said hollow shaft and revolubly mounted at both ends in said frame, driving connections between said second and third shafts, and change speed driving connections between said hollow shaft and said third shaft.

5. In a change speed driving mechanism for a motor, the combination of a frame comprising a plate and a housing member secured to the plate and extending from one face thereof, means for mounting said frame rigidly on said motor at one end of the motor, a hollow shaft extending through an opening in said plate and through said housing and rotatably mounted at its inner end in said plate and at its outer end in said housing, a second shaft extending through said hollow shaft having a driving connection at one end with said motor and revolubly mounted at its opposite end in said housing beyond the outer end of the hollow shaft, a third shaft extending through said housing alongside of said hollow shaft and revolubly mounted at its inner end on said plate and revolubly mounted at its outer end in said housing, driving connections between said second and third shafts, and change speed driving connections between said hollow shaft and said third shaft.

6. In a change speed driving mechanism, the combination of a housing, a hollow shaft extending through said housing and rotatably mounted at both end portions therein, means for mounting said housing rigidly on said motor at one end of the motor so as to support said hollow shaft in parallel relation to the axis of the motor, a second shaft extending through said hollow shaft having a driving connection at one end with said motor and revolubly mounted at its opposite end in said housing beyond the outer end of the hollow shaft, a third shaft extending through said housing alongside of said hollow shaft and revolubly mounted at both ends in said housing, driving connections between said second and third shafts, and change speed driving connections between said hollow shaft and said third shaft.

'7. In a change speed driving mechanism for an electric motor, the combination of two frame bars secured to the motor and extending at opposite sides of the motor shaft, a frame plate secured to said bars in transverse position opposite the end of the motor shaft, a frame member secured to said frame plate and extending outwardly therefrom, a shaft rotatably mounted on said framework and operatively connected with the motor shaft so as to be driven thereby, a hollow shaft in concentric position on said first named shaft and rotatably mounted on said framework, a third shaft rotatably mounted on said framework alongside of said hollow shaft, driving connections between said first named shaft and said third shaft, and change speed driving connections between said third shaft and said hollow shaft.

8. In a change speed driving mechanism for an electric motor, the combination of two frame bars secured to the motor and extending at opposite sides of the motor shaft, a frame plate secured to said bars in transverse position opposite the end of the motor shaft, a frame member in the form of a housing secured to said frame plate and extending outwardly therefrom and partially closed at its outer end by a transversely positioned flange, a shaft rotatably mounted at its outer end in said flange and operatively connected at its inner end with the driving shaft of said motor so as to be driven thereby, a hollow shaft in concentric position on said first named shaft and rotatably mounted at its end portions in said frame plate and said flange respectively, a third shaft rotatably mounted between said frame plate and said flange alongside of said hollow shaft, driving connections between said first named shaft and said third shaft, and change speed driving connections between said third shaft and said hollow shaft.

9. In a change speed driving mechanism for an electric motor, the combination of two frame bars secured to the motor and extending at opposite sides of the motor shaft, a frame plate secured to said bars in transverse position opposite the end of the motor shaft, a frame member in the form of a, housing secured to said frame plate and extending outwardly therefrom and partially closed at its outer end by a transversely positioned flange, a shaft rotatably mounted at its outer end in said flange and operatively connected at its inner end with the driving shaft of said motor so as to be driven thereby, a hollow shaft in concentric position on said first named shaft and rotatably mounted at its end frame plate and said flange respectively,

portions. in said named shaft opposite said first named gear but out of mesh therewith, a ring rotatably mounted on the outer face of said flange about said first named shaft,'pinions rotatably mounted on said ring in driving relationship to said second gear and adapted upon rotary movement of said ring in opposite directions to engage said first named gear for driving it alternatively in opposite directions, latch means on the outside of said housing for releasably holding said ring in adjusted position, and change speed driving connections between said third shaft and said hollow shaf 10. A unit arrangement of change speed driving mechanism for an electric motor, comprising in combination two frame bars adapted-to be removably secured to a motor at opposite sides of the driving shaft of the motor, a frame plate sea third 7 a second gear on said first cured to said bars in transverse position opposite the end of the motor shaft, a frame member secured to said frame plate and extending outwardly therefrom, a hollow shaft rotatably mounted at its opposite end portions on said framework, a third shaft extending through said hollow shaft and rotatably mounted at one end portion in said hollow shaft and at its opposite end portion in said framework beyond the outer end of the hollow shaft, a hollow driving member mounted concentrically on said hollow shaftabout the outer end portion of the driving shaft of the motor, a second driving member mounted concentrically on said third shaft inside of said hollow driving member, means for operatively connecting said second driving member with the driving shaft of the motor, a fourth shaft revolubly mounted on said framework alongside of said hollow shaft, driving connections between said third and fourth shafts, and change speed driving connections between said hollow shaft'and said fourth shaft.

ALEXANDER F. KAPTULLER.