USRE12544E - A corpo - Google Patents

Description

REISSUED OUT. 23, 1906.

0. W- DAVIS. TRANSMISMON GEAR. APPLiOATION FILED MAE-19, V1906.

2 $HEETS-SHEET 1.

' No. 12,544. REISSUED OUT. 23,1906.

0. W. DAVIS. TRANSMISSION GEAR.

APPLICATION FILED MAR. 19, 190B.

2 SHEEN-SHEET 2 v 1 UNITED STATES ATENT OFFICE.

ORSON W. DAVIS, OF ROCHESTER, NEW YORK, ASSTGNOR TO GEARLESS TRANSMISSION COMPANY, OF GLENS FALLS, NEW YORK, A CORPO- RATlON OF MAINE.

TRANSMISSION-GEAR.

Specification of Reissued Letters Patent.

Reissued Oct. 23, 1906.

Original No. 799,143, dated Sptembei- 12, 1905- Applioatiou for reissue filed March 19, 1906x Serial No. 306,932

To all whom it may concern: I

Be it known that I, ORSON W. DAVIS, acitizen f the United States, residing at Rochester, county of Monroe, and State of New York, have invented certain new and useful Improvements in TransmissionGear; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap ertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a transmissiongear for motor-vehicles; and it consists in the construction and arrangement of parts hereinafter fully set forth, and pointed out particularly in the claims.

The object of the invention is to provide a frictional transmissiongear which enables the motor or engine shaft to be connected directly or indirectly with the axle of the vehicle, which affords a differential speed, which allows the motion of the vehicle to be reversed, and affords differential speed in the reversed position.

The above object is attained by the mechanism illustrated in the accompanying drawings, in which 7 Figure 1 is a plan view showing the application of my invention. Fig. 2 is a side elevation of the mechanism for shifting the friction-disks. Fig. 3 is a plan view partly in horizontal section. Fig. 4. is an e evation of the face of one of the members of the extension-collars which are employed to move the friction-disks laterally. Fig. 5 is a side elevation of the extension-collar.

Referring to the characters of referende, 1 designates the 1notorshaft, upon which is mounted the balance or fly wheel 2. I This wheel is provided upon its face With an out-.

wheel 9, having a beveled face 10, adapted to engage the beveled face 4 of the fly-wheel to cause the shaft 7 to be driven directly from the motor-shaft 1.

To rovide for indirectly driving the shaft 7 at dif 'erent speeds and reversing the motion thereof, there are employed opposed friction-- disks 11, each having a beveled outer face 12, adapted to run in frictional contact with the beveled face 3 of the balance-wheel, and having a straight friction-face 13, adapted to run in frictional contact with the periphery 14 of the friction-wheel 9, which periphery is composed of suitable friction material. These disks 11 are mounted upon the shafts 1.5, which run in suitable bearings on the frames 16, in which said shafts are longitudinally movable. The disks 11 are moved toward and from each other by means of the expansion-collars on said shafts, the member 17 of which is provided with a ball-bearing 18 between its face and the hub of the disk to receive the thrust as the collar is expanded expansion-collars, said part is provided withthe projecting bracket 21, (see Fig. 2,) to which is attached one end of a connecting-rod 22, the other end of which is pivoted to the lever 23, the free end of which carries the foot-pedal 24. By forcing said lever forward the bracket 21 is actuated to partially rotate the member 19 of the exp ansion-col lar, whereby the parts'of said collar are separated, as be fore stated, and the disk 1 1 proj eeted. There will be one of thelevers 23 for each of the disks 1 1, so placed that said disks may be operated in unison to carry them into contact with the friction-Wheel 9. For the purpose of projecting the disks forward so as to bring their beveled faces into frictional contact with the beveled face 3 of the balance -wheel 2 the frame 16, carrying the bearings of the shafts lows: The first forward movement of the lever will rotate the members 19' of the expansion-collars sufficiently to project the disks 11 intocontact with the periphery of the friction-wheel 9', when a further movement of said lever will cause the ears 29 to engage the lugs 28, arresting the rotary movement of the members 19 of the collars and causing a further pressure upon the levers 23 to move the frames 16, thereby sliding the disks 1 I into contact with the beveled face of the balance-wheel 2, causing the disks 11 to revolve in opposite directions and drivthe friction-wheel 9 and causing a rotation of the shaft 7. To vary the speed of shaft 7, the wheel 9 is moved upon said shaft through the medium of the pull-rods 30, which. are connected to a ring 31, lying in an annular channel in the hub 32 of the wheel 9, whereby said wheel may be moved upon the shaft 7 across the face of the disk 11. It will be obvious when said wheel 9 is at the center of the disks 11 no movement will be imparted thereto through said disks, but as it is moved outwardly from the center in either direction the speed at which said wheel is rotated will be gradually increased and that the direction of rotation will be reversed as said, wheel is moved from one side of the center of said dis-ks to the other. By this arrangement the vehicle may be driven at an rate of speed either backward or forwarr, and when desired the disks 11 may be released and shaft 7 driven directly by moving the Wheel 9 forward, so as tocause its beveled face 10 to engage the corresponding beveled face 4 of balance-Wheel 2, whereby the motor-shaft 1 and the shaft 7 become directly coupled through the balance-wheel.

To retract the friction-disks 11, there is employed upon the shaft of each a coiled spring 33, which bears against the frame at one end and at the other end confined by a collar 34 on said shaft. The springs are'compressed when the disks are projected, and the tension thereof serves to retract the diskswhen the expansion-collars are released.

In 1', 35 designates a gasolene-engine of the ordinary type connected to the shaft 1.

Having thus fully set forth my invention, What I claim as new, and desire to secure by Letters Patent, is

1; In a transmission-gear, the combination of the motor-shaft, a wheel fixed thereon providedl with as meson-ism, the main shaft rotatabl'e independently of the motor-shaft, a clutch device for connecting said shafts directly, a friction-wheel spline-d on the main shaft, a transmitting friction-disk having two friction-faces, said disksbeing movab; to cause its friction-faces to enga e the frictionwheel on the motor-shaft and the frictionwheel on the main shaft.

2. In a transmissiongear, the combination of the motor-driven shaft, a wheel upon the motor-shaft, the main shaft connected to but rotatable independently of the m'otorsh-aft, ,a friction-wheel splined on the main shaft, means forconnecting the motor and main shafts to cause them to turnin unison, a movable friction-disk located at right anglesto the friction-wheel on the main shaft, means for moving said wheel into engagement withthe wheel on the motor-shaft and into en gagement with the friction-wheel on the main shaft, whereby the main shaft may be driven directly at a fixed speed and in directly at a variable speed.

3. In a tran emission-gear, the combination of the motor-driven shaft, a wheel fixed" thereon, a main shaft rotatable independently of the motor-shaft, a movable frictionwheel splined to the main shaft and adapted to engage the wheel on the motor-shaft to establish a direct communication between said shafts, the wheel on the motonshaft having an outwardly-beveled friction-face, opposed movable friction-disks ea-ch havin a beveled face adapted to engage the beveIed' face of the wheel onthe motor-shaft and each hav ing a straight face adapted toengage the periphery of the frictiomwheel on the main shaft, and means for actuating said disks 4. In a transmission-gear, the combination of the motor-driven shaft, a friction-wheel thereon, the main shaft rotatable independentfy of the motor-shaft, a clutch for connecting said shafts to cause them to turn in unison, a friction-wheel splined on the main shaft having a peripheral frictional surface, opposed friction-disks, shafts longitudinally movable in their bearings upon which said disks are mounted, each disk having a friction-surface to engage the friction-face of the wheel on the motor-shaft, expansib'le cellars for projecting said disks to carry their straight faces into' contact with the periphery of the wheel on the main shaft, a movable frame carrying the shafts of each of the fric tional' disks, and means for moving said frames to carry the peripheries of the friction-disks into contact with the fricti ond acc' of the wheel on the motor-shaft.

5. Ina transmission-gear, the'conibination of the motor-shaft, the main shaft rotatable independently of the motor-shaft, a frictiom Wheel on the motor-sh=aft, a transmitting Iii-O fmletion-disk, a drivin friction-wheel slitleble 'eere'ss the fees of sai disk, means for transmitting oower from the driving fricti0n Wheel to the mem shaft, means for connectmg sand shafts to cause them to turn 1n unlson,

-sa,id transmitting-disk being movable longitudinally of its axis to contact the driving fiiotiomwheeh and being movable transversely of its axis to contact the friction Wheel on the motor-shaft.

In testimony whereof I sign this specifics-- tion in the presence of two witnesses.

I ORSQN W. DAVIS. In presence oft G. I. WINSTANDLEY, IDA GERLING.

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