US799148A

US799148A - Transmission-gear.

Info

Publication number: US799148A
Application number: US22872604A
Authority: US
Inventors: Orson W Davis
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-10-17
Filing date: 1904-10-17
Publication date: 1905-09-12
Anticipated expiration: 1922-09-12

Description

N0. 799,148. PATBNTED SEPT. 12, 1905. O. W. DAVIS. TRANSMISSION GEAR.

AFPLIGATION FILED 0012111904.

2 SHEETS-SHEET l wituesses flfl/fdW No. 799,149. PATENTED SEPT. 12, 1905.

. 0. W. DAVIS.

a 9 TRANSMISSION GEAR;

APPLICATION FILED 001111904 2 SHEETS*SHEBT 2 witnesses gnucutm:

()RSON \V. DAVIS, OF ADRIAN, MICHIGAN.

TRANSMISSION-GEAR.

Specification of Letters Patent.

tar as.)

Patented Sept. 12, 1905.

Application filed October 17, 1904. Serial No. 228,726.

1'0 1/71/0721 if may concern.-

Be it known that I. ORSON \V. DAV'IS, a citizen of the United States, residing at Adrian, in the county of Lenawee, State of Michigan, have invented certain new and useful Improvements in Transmission-Gear; andl do 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 appcrtains to make and use thesame, reference being bad to the accompanying drawings, and to the ligures of reference marked thereon, which form a part of this specification.

This invention relates to a transmission-gear for motorvehicles; and it consists in the construction and arrangement of parts hereinafter fully set fortl1,and pointed out particularly in the claims.

The object of the invention is to provide a frictional transmission-gear 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 anism illustrated in the accompanying ings, in which' Figure l 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 elevation 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 reference, 1 designates the motor shaft, upon which is mounted the balance or fly wheel 2. This wheel is provided upon its face with an outwardly-beveled friction-surface 3 and an inwardly-beveled friction-surface 4. The motor-shaft passes through the balance-w heel and has a reduced end or tenon 5, which enters and turns in a socket 6 in the end of the main shaft 7. The main shaft is provided with a key-seat 8, and splined upon said shaft by means of a key in said seatis a friction-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 motorshaft 1.

To provide for indirectly driving the shaft 7 at different speeds and reversing the motion mechd rawthereof, there are employed opposed frictiondisks 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 14E of the friction-wheel 9, which periphery is composed of suitable friction material. These disks 11 are mounted upon the shafts 15, which run in suitable bearings on the frames 16, in which said shafts are longitudinally movable. The disks 11 are moved toward and fromeach 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 and the disk brought into frictional contact with the friction-wheel 9 or the friction-face of the balance-wheel 2. The part 19 of the friction-collar is provided with the inclined faces 20, which lit into the corresponding inclines on the part 17, so that by partially rotating the part 19 said parts are separated to move the shaft longitudinally and present it to the disk 13, as will be well understood.

To provide for rotating the part 19 of the expansion-collars, said part is provided with the 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 expansion collar, whereby the parts of said collar are separated, as before stated, and the disk 11 projected. There will be one of the lovers 23 for each of the disks ll, 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 l.)alance-\vlieel 2 the frames 16, carrying the bearings of the shafts of said disks, are made to slide upon the main frame 25 by means of the slotted openings 26 therethrough, through which are passed the bolts 27. The sliding movement of the frames 16 is accomplished through the medium of the adjustable lug 28 on the main frame, which is adapted to be engaged by the projecting car 529 on the member 19 of the expansion-collars, the operation being as follows: The first forward movement of the lever 23 will rotate the members 19 of the expansioncollars sufliciently to project the disks 11 into contact with the periphery of the frictionwheel 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 11 into contact with the beveled face of the balancewheel 2, causing the disks 11 to revolve in opposite directions and driving the frictionwheel 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 disks 11. It will be obvious when said wheel 9 is at the center of the disks 11 no movement will be imparted theretothrough said disks; but as it is moved outwardly from the center ineither 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 thecenter of said disks to the other.

- By this arrangement the vehicle may be driven at any rate of speed, either backward or forward, and when desired the disks 11 may be released and shaft 7 driven directly by moving the wheel 9 forward, so as to cause 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 is 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 disks when the expansion-collars are released.

In Fig. 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 provided with a friction-face, the main shaft rotatable independently of the motor-shaft, a friction-wheel splined to the main shaft and having a friction-face adapted to be carried into contact with the friction-face of wheel on the motor-shaft, a transmitting frictiondisk having two friction-faces, said disk being movable in two directions to cause its frictionfaces to concurrently engage the frictionwheel on the motor-shaft and the frictionwheel on the main shaft respectively.

2. In a transmission-gear, the combination of the motor-driven shaft, a wheel upon the motor-shaft having an inner friction-surface, the main shaft connected to but rotatable independently of the motor-shaft, a frictionwheel splined on the main shaft having a friction-surface adapted to engage the inner friction-surface of the wheel on the motorshaft, a movable friction-disk located at right angles to the friction-wheel on the main shaft, and adapted to be brought into engagement therewith, said movable disk having a beveled friction-face adapted to be brought into engagement with a corresponding face on the wheel of'the motor-shaft, whereby the main shaft may be driven directly at a fixed speed and indirectly at a variable speed.

3. In a transmission-gear, the combination of the motor-driven shaft, a wheel fixed thereon, a main shaft rotatable independently of the motor shaft, a movable friction wheel splined to the main shaft and adapted to engage the wheel on the motor-shaft t0 establish a direct communication between said shafts, the wheel on the motor-shaft having an outwardly-beveled friction-face, opposed movable friction-disks each having a beveled face adapted to engage the beveled face of the wheel on the motor-shaft and each having a straight face adapted to engage the periphery of the friction-wheel on the main shaft, and means for actuating said disks.

4. In a transmission-gear, the combination of the motor-driven shaft, a balance-wheel thereon provided with an inwardly-beveled friction surface and an outwardly beveled friction face, a main shaft rotatable independently of the motor -shaft, a frictionwheel splined to the main shaft having a beveled friction-face adapted to engage the inner friction-surface of the fly-Wheel on the motorshaft, and having a peripheral frictional surface, opposed friction-disks, shafts longitudinally movable in their bearings upon which said disks are mounted, each disk having a beveled frictional surface adapted to engage the beveled friction-face of the wheel on the motor-shaft, expansible collars 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 shaft of each of the frictional disks, and means for moving said frames to carry the beveled face of the frictional disks into contact with the outwardly-beveled frictional face of the wheel on the motor-shaft.

In testimony whereof I sign this specification' in the presence of two witnesses.

ORSON W. DAVIS. Witnesses:

JNo. D. LYNN, CHARLES A. ROLFE.