US1220554A - Speed-varying device. - Google Patents

Description

R. REHER.

v SPEED VARYING DEVICE.

APPLICATION FILED OCT. 28, i913.

Patented Mar. 27, 1917.

2 SHEETS-SHEET l.

mv M

R.REHER. SPEED VARYING DEVICE.

APPLICTION FILED OCT. 28. 1913.

Ptented Mal'. 27,1917.

2 SHEETS-SHEET 2.l

JM@ M? UNITE@ STATE@ RAYMOND REBER, OF NEW YORK, N. Y.

SPEED-VARYING' DEVICE. M

Specification of Letters Patent. l

Patented Mar. 27, 191'?.

Application mea october as, i913. 'serial No. 7er-,7152.

To all whom it may concem.'

Be it known that I, RAYMOND REBER, a citizen of the United States, residing at New York city, in the county and State of New York, have invented certain new and useful Improvements in Speed-Varying Devices, of which the following is a clear, full, and exact description.

This invention relates to an improvement in power transmitting or driving mechanisms, the object being toprovide a device of this character adapted to vary the speed of a driven shaft relative to the driving shaft. To carry out the object of my invention, I utilize the principle of frictional contact thereby obviating the necessity of resorting to gearing.

In the drawings:

Figure 1 is a plan view partly in section of my improvement.

Fig. 2 is a top plan view of the speed changing device.

Fig. 3 is a vertical sectional view, the section being taken on a line 3 3 in Fig. '1.

Fig. 4 is an enlarged longitudinal sectional view taken on a line 4-4 in Fig. 2.

Fig. 5 isl an enlarged end view of the speed changing device.

As herein illustrated, my improvement is illustrated as attached to a motor 1, the said improvement consisting of a frietional speed changing driving mechanism 2.

One of the elements of the improvement consists of a conical driving disk 3 secured to the motor shaft 4, another element consists of a driven disk 5 secured to a shaft 6 carrying, in this instance, pulleys 7, 8 and 9.

To transmit power from the disk 3 to the disk 5 I utilize rollers or wheels 10 and 11 carried by a sleeve 12 rotatably mounted on a fixed rod 13 carried by a pivoted frame 14 normally positioned at an angle relative to the aXis of the shafts 4 and 6. v(Fig. 4).

The frame 14 is pivoted, intermediate the ends thereof, at 15 and 16 in the housing 16. The pivot point or pin 16 may be secured to the housing 17 but the pin 15 is preferably secured to the frame 14 and rotates with it. o swing the frame 14 I utilize a shaft 18 which is rotatably supported by the frame 14 and passes through the end Walls of a sliding frame 19 carried by the swinging frame 14. The shaft 18 is threaded at 20,

the adjacent end wall threaded to engage the threads 20.

The outer end of the shaft 18 passes through a slot 21 in the housing 17 and is provided with a handle 22.

Y Vhile the sleeve 12 is rotatably and slidably mounted on the rod 13 it is also rotatably mounted lin the hubs 23, 24V of the frame 19 and travels with it, hence when the slide 19 is moved the rollers A10 and 11 will travel of the slide 19 being with it or longitudinally of the rod 13. The rollers 10 and 11 are preferably made out of leather', rubber or some other similar substance.

As can be seen in Fig. 1, the rollers 10 and 11 bear against the conical surface of the disks 3 and 5, consequently when the disk 3 is rotated motion will be transmitted to the disk 5 and shaft 6 through the rollers 10 and 11. The relative speeds of the shafts 4 and 6 will be dependent upon the position of the rollers relative to the center of the disks. For example, should the rollers-10 and 11 be positioned equally distant from, the centers of the two disks the speed of the two disks would be the same. To increase the speed of the disk 5, relative to the disk 3, the roller 10 would be moved away from the center. To decrease the speed of the disk 5, the roller l0 would be moved toward the center. This, of course, is obvious. To slide the frame 19 to alter the position the shaft 18 would be rotated, the threaded portion 2O acting' to move the frame.

To swing the frame 14, the handle 22 would be moved from one side of the slot 21 to the other. When the handle 22 is moved to the neutral or central position, as shown in Fig. 5, the disk 5 will not rotate as both rollers will at this time be out of contact with the disks.

To hold the frame 14 in any of the three 'positions I utilize a spring 25 which bears against a cross-head 26 carrying a spring retaining member 27, Fig. 2. he spring 25 forces the retaining member 27 against a pin 28 carried by an arm 29 secured to the pin 15. It is quite apparent that the pressure of the spring 25 upon the pin 28 will hold the frame 14 in any of the three positions, thatis to say the forward, reverse or neutral.

I claim as my invention:

1. A frietional driving mechanism conof the rollers,

sisting of a driven disk and a second disk to be driven, a plurality of rollers interposed between and in contact with said disks so arranged to be oscillated and shifted between said disks :tor the purpose of increasing and decreasing the speed of the second disk.

2. A frictional driving mechanism consisting of a driven disk, a driving disk and a plurality of rollers mounted upon a coinmon axis between said disks, one of said rollers being in contact with the driven disk, and the other roller being in contact with the driving disk, in combination with means to shift the rollers from one disk to thc other for the purpose of changing the speed of the driven disk.

3. A frictional driving mechanism consisting of a driving disk, and a driven disk and a plurality of rollers mounted upon a common axis in a movable support between said disks, one of said rollers being in contact with the driven disk and the other roller being in contact with the driving disk, and means to shift each roller from one disk to the other in combination with means to shift said rollers relative to the centers of their respective disks.

Li. A frictional driving mechanism consisting of a driven disk and a driving disk, and a plurality of rollers between and in contact with said disks, and means to change the contact o'l said rollers from one disk to the other.

5. A frictional driving mechanism consisting of a driving disk, a driven disk and a plurality of rollers mounted upon a common axis in a shiftable support between and in contact with said disks, the axis of said rollers being normally positioned at an angie to the axis of said disks, and means to change the positions of said rollers relative to the disks to vary the speed of the driven disk.

6. A rictional driving mechanism consisting of a conical driving disk, a Vconical driven disk, a movable carrier located between said disks, said carrier being normally positioned in parallelism with a portion of the conical surface of said disks, rollers mounted upon a common axis carrie said carrier contacting with said disks, and means to change the position of the carrier, and rollers carried thereby, relative to the axis of said disks.

7. A frictional driving mechanism consisting of a driving disk, a driven disk, a pivoted frame located between said disks, the axial'linc of the fixed points o1 said frame intersecting the axial line of said disks, a slidable carrier carried by said frame, rollers Jfastened upon a common axis carried by said carrier adapted to contact with said disks, means to slide said carrier longitudinally of said frame, and means to move said frame upon its pivot points to cause said rollers to change position relative to the disks.

8. A frictional driving mechanism consisting oi' a conical driving disk and a conical driven disk, a shiftable rotatable power transmitting device located between said disks, and means to move said power transmitting device out of contact with said disks.

Signed at New York city this 6th day of October, 1913.

RAYMOND REHER.

Witnesses:

MABEL DITTENHOEFER, ROBERT RICHTER.

Gopies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. G.

dby

Images