US1272182A - Transmission-hub. - Google Patents

Description

U. APPLEBY.

TRANSMISSION HUB.

,QP-PLICATION FILED NOV. I1. 1915.

Patentesi July 9, 1918.

0- ieb 1W #731,031

26 Invenibr onvIL n APPLEZBY, or sen FRANCISCG, oaizrronma.

TRANSMISSION-HUB.

To all whom it may concern:

Be it known that I, OuviLLn Armrest, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Transmission- Hubs, of which the following is a specification. y

In auto-trueks,vas at present constructed, it is always the case, so far as my knowledge extends, that the truck is designed only for a comparatively low speed, this low speed being necessary in order to propel the autotruck with an engine of moderate power. Especially is this the case with auto-trucks which have been formed by conversion from ordinary motor cars. When converting a motor car into an auto-truck, reduction gear is employed to increase the power at the expense of speed. But it is often found as, for instance, when the load on'the car is but a light one or when the car is running on a very smooth road or on a downward incline, that the car can be run at a high. rate of speed without the expeiuiliture of great power. With the ordinary means for converting a car into a motor truck, advantage cannot be taken of: these conditions, for the reason that there is no way of recovering the increased speed at the expense of the power.

One object of the present invention is to provide mechanism whereby either the speed of a motor car can be reduced with an increase of power, so that the car can serve as an auto-truck, or, if desired, the speed relationcan remain unchanged, so that the con verted auto-truck can be run at high speed.

A further object is to provide mechanism whereby a large number of different speeds maybe imparted to a motor car from the same power.

A further object of the invention is to provide a construction by which the main portion of the weight of the load of the car is thrown on the axle housing, and not on the axle, as at present, thereby relieving the axle of all strain, except that sustained in driving the car.

In the accom anvin drawin Fi urc 1 is a vertical'section of my improved transmission hub, Fig. 2 is a horizontal section thereof.

I Referring to the drawing, 1 indicates a spoke of a driving wheel of a motor car,

bolted, as shown at 2, to an outer drum 3 Specification of Letters I'atent.

Application filed November 11, 1916. Serial No. 130,895.

around a drum 1-, said drums forming a transmission casing. The inner drum if n;

' v l E F secured by bolts 0 to the haring end or housing (3, saul housing being also supp ed by a circular flange 7 around a ryhn "cal inner portion 8 or the housing. .said housing extends the drinng axr, l'iHVlll" a tanerin end 10 contained within,

a L to v and keyed to, a tubular sliding-gear shat; 11, the outer surface oi which inguiar in form, here shown as square Will the or ners clnunt'ered. To the drum 1 is Tilt by pins 12 a' ring i i. having iulerna teeth 1%. Antiriotion rolleas 15 are carried on rings 16 and are interposed hetwctni the outer edge of the ring 1. 3 and the inner surface of the flange l? of the drum i, so that the drum 3 can rotate without friction relatively to the drum 1% supporting the axle.

Said drum 3 is extended to form a cylindrical cavity 18, which receives a transmission device 19 in its neutral position, said device being slidable on the sliding gear shaft 11, and eoi'nprising a large gear wheel 20 and a small gear wheel secured to gether by screws 2, which also Secure to the inner face of the gear wheel 20 a circular plate or disk 23, the object o5 said dish being to hold in place a pusher plate 2%, to which is screwed a pusher rod :25 extending through a hole in the drum l parallel with the driying axle, and by which said transmission device is shifted. when said transmission device is shifted inwardly, the teeth of its larger gear wheel 20 engage the teeth of a number of idle pinions if; arrang equal intervals around the axle and inesl ng with pinions .27, the pinions i 36 and 27 retating on roller hearings 28 around stud shafts 25) screwed in said drum said pin ions 27 meshing with the teeth oi" the iuternal gear ring 13 secured tothe drum 3.

By this nieans the speed of the wheel reduced one-halt, increasing the power prow it 1 u fZLmesh with an internal gear wheel 31 formed in a still further reduced portion 32 of the drum 3,-said gear wheels 21 and 31 "thus forming, in efl'ect, a clutch and causing the drum 3, and the wheelattached thereto,-

to rotate at the same speed as the axle, by

sliding gear'shaft 11, and therefore as the peed that -the shifters of reason of the fact that the transmission device 1.9 still rotates at the same speed as the same time, if desired, by merely shifting the gear, the original speed can-be employed at any time when suitable.

It 'is'desirable when making a change in the-two driving wheels be shifted not simultaneously but one slightly after'the other.

nisms which need not be hereinspecified can be employed for eflecting this result;

The present mechanism-not only provides a simple and convenient, means of conyer sion of the drivmg'mechamsm of an ordinary car into that of an auto-truclt eta.

' lower speed and also of reconversion into vantage that the main of the load" by the axle, thereby transmitted, through the transmis sion mechanism and the anti-friction wheels, to the hubs-and to the driving Wheels with out throwing any strain due to the load upon the axle. The 'tLIltlfIlCiilOl'l rollers are in terposed between the drum tend the ring 17, which is rigidly secured to the drum 3, to serve the purpose of transmitting the load from one. drum to the other without any frictiontending to cause'loss of ower',

In order to permit the part of the rum 3 adjacent to the outer end of the sliding gear shaft to rotate relatively thereto with out undue friction, ball bearings 33 are interposed therebetween and ball bearings 34 are also interposed between .the \reduced portion of the drum 3 and the nut 35 which is screwed upon the threaded end of the" axle and holds the wheel in place.

An important advantage of this invention is that the conversion can be made by sim-' ply changing-the driving wheels and attaching the shift mechanism and brakes, no other change being necessary.

I claim '1 1, In a transmission hub, the combination of an axle, a housing therefor, a drum axisecured to said housing, a vehicle Wheel rotatable around the axle,"an internal gear wheel 'rotatable with the vehicle wheel, a slidablh gear Wheel around the axle an rotatable therewith, means carried by the Many "mechabut at a slower moved into engagement, means said housing,

the axle,

, anti-friction rollers housing for-transmitting motion from the gear wheel in 'its inner position to the. in-

ternal gear wheel'but at -a slower speed of rotation, devices secured-t0 the gear wheel andwheel respectively to transmit motion of "an axle, a housing therefor, a 4 axially secured to said housing, a Whole wheel rotatable around the axle, an internal gear wheel rotatable with thevehicle wheel,

direct to the wheel from the gear wheel'in,

a'slidable gear wheel around the axle and,

rotatable therewith, an id e gear wheel carried by the housing for transmitting motion from the gear wheel in its inner position to the internal gear wheel but at a slowerspeed of rotation, devices secured to the gear wheel and wheel'respectively to'tra'nsmit motion direct-to the wheel; from the gear, wheel in" its outer position, and means for shifting said means.

3'. In a transmission hub, the combination v of am axle, a housing therefor, a drum axially secured to said housing, a vehicle Wheel rotable around the axle, an internal gear wheel rotatable with the vehicle wheel,

- a slidable gear wheel around the axle and theoriginal speed, but it has the great adportion of the weight of the car isnow carried, notbut by the axle'housing, and-is wheels carried by the housing for transmitting motion from the gear wheel in its inner position to the internal gear wheel speed of rotation, devices secured to the gear wheel and wheel respectively to transmit motion'direct to the wheel: from the gear wheel in its outer position, and means for shifting said means.

- 4 In combination, adriving axle, avehicle wheel driven thereby,a housing for the axle, a drum secured to said housing, a secured was wheel, a ring secured t2) said drum and'having internal gear teeth, ant'ifricti'on rollers between the ringand the: drum. to which it is not secured, a :sliding" gearshaft around said axle, a t ansmission device slidable on, but rotatable with, said slidinggear shaft comprising a gear wheel, and a clutch memlo ried by saidsecond-named drum with which er, a clutch member carsaid first clutch member is adapted tobe wheel is adapted to be moved into engagement,,for transmitting motion from said gear wheel to said internal toothed ring, and

. means for shifting said transmission device.

driving axle, a ve the drum to which it i 's not secured, a sliding etween the ring and carried by and with which said gear gear shaft around saidaxle,'a transmission,

device slidable on, but rotatable with, said sliding gear shaft, comprising a gear wheel and a clutch member, a clutch member carried by said second-named drum with which said first clutch member is adapted to be moved into engagement, pairs of gear Wheels carried by said housing, and with which said gear wheel is adapted to be moved into engagement, for transmitting motion from said gear wheel to said internal toothed ring, and means for shifting said transmission device.

6. The combination of a driving axle, a driven wheel, astationary housing for the axle, means slidable longitudinally relatively to the axle for transmitting motion in one of its positions direct from the axle to the wheel, and means carried by the housing forming a medium through which said slidable means can transmit motion in another of its positions indirectly from the axle to the wheel.

7. The combination of a driving axle, a

driven wheel, a stationary housing for the axle, an internal gear ring secured to the wheel, a device slidable longitudinally relatively to the axle for transmitting motion in one of its positions direct from the axle 'to the wheel, and means supported by the housing for transmitting motion in another of its positions indirectly to said gear ring.

8. The combination of a driving axle, a driven wheel, a stationary housing for the axle, an. internal gear ring secured to the wheel, a device slidable longitudinally relatively to the axle for transmitting motion in one of its positions direct from the axle to the wheel, a drum secured to the housing surrounding said internal gear ring, antifriction rollers between said drum and gear ring, and means supported by the drum for transmitting motion from the axle to the gear ring by means of said slidable means in another of its positions.

O. APPLEBY.

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