Improvements in and connected with Frictional Driving Gear and in Bearings therefor.
Year: 1891

page_text: Date of Application, 1st Oct., 1891
Complete Specification Left 1st, July, 1892-Accepted 1st Oct., 1852
PROVISIONAL SPECIFICATION.
Improvements in and connected with Frictional Driving Gear and
in Bearings therefor.
I WILLIAM JOHN BREWER of (cjo C. Mason) 10 Lyndhurst Square London
S.E. Civil Engineer do hereby declare the nature of this invention to be as
follows:-
This invention relates to certain improvements in and connected with frictional
driving gear and in bearings therefor the object being to provide bearings for
driving wheels or pulleys of electric motors or the like wheels that shall minimise
friction and tend to prevent the absorbtion of power that now takes place when
the main wheel is driven from a pulley or motor wheel by friction, contact or
rolling gear, and in carrying my invention into practice instead of mounting the
spindles in bearings in the ordinary way I simply rest them in parallel guide rods,
two on each side and I then mount antifriction rollers or wheels one on each side of
the main driving wheels and pulley or motor wheels so that the spindles may run
or revolve against the anti friction wheels before mentioned. These anti friction
wheels are so mounted on suitable springs that they are kept close up to the spindles
of the driving wheels against which they revolve.
I may if desired mount two three or more anti friction wheels in a circular or
other suitably shaped frame the spindles revolving between them and I may so
arrange screws or springs to keep the wheels in close contact and knuckle or toothed
gear may if desired be fitted in a suitable manner.
Dated this 30th day of September 1891.
COMPLETE SPECIFICATION.
Improvements in and connected with Frictional Driving Gear and
in Bearings therefor.
I WILLIAM JOHN BREWER Civil Engineer care of Charles Mason C.E.
10 Lyndhurst Square London S.E. do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention relates to certain improvements in and connected with frictional
driving gear and in bearings therefor specially applicable to electrically propelled
vehicles. Hitherto when fitting friction driving gear say to a tram car it has been
the custom to tighten up the motor pulley or pinion to the main car wheel, by
ordinary smooth bearings, said bearings absorbing a great measure of the power
expended and also using a considerable amount of lubricant.
Therefore to obviate the above defects I tighten up my friction driving gear by
mounting their axles or spindles in such manner as to distribute their thrust or strain
upon spring pressed antifriction rollers or wheels held in position by guide rods,
said guide rods keeping the rolling contacts in the desired position with the usual
mechanical fittings. In fitting rollers of small diameter to the friction driving
gear I prefer to use the ordinary loose balls or other well known rollers having the
whole of the driving axle and other working parts surrounded by a collar or box
carrying said antifriction devices. The guide rods for same have their springs
placed in a suitable position to allow of the cars or other mechanism to receive a
jolt or jar without danger of breaking the rods or other parts of said gear. In
fitting antifriction wheels to the said driving and driven wheels or driving

page_text: mechanism with the rods holding the necessary parts together, I fit a large
antifriction wheel at each end of the thrust, the guide rods for same passing
through suitable bearings supporting the spindles of the said antifriction wheels,
the guide rods passing over and under the axle or spindle of the electric motor or
other driving mechanism, and the axle of the tram car or other driven wheel or
wheels will be supported and kept in position by antifriction wheels. Toothed
gearing may as indicated in the drawings be used between the driving and
driven wheels in combination with and by way of addition to the smooth faces
thereof to prevent slip. The guide rods may be employed in pairs or I may join
them in one and supply a suitable jacket or coupling to hold the rods together.
The springs hold the antifrictional device up to the working parts with an elastic
pressure. From the foregoing it will be apparent that this improved system of
friction driving gear can be applied with great advantage to many systems
of electric propulsion and other mechanical motors and engines for the transmission
of power.
The invention will be clearly understood by the accompanying drawings
whereon
Figure 1, is a side elevation showing my device fitted to an electric car axle and
motor spindle.
Figure 2, shows the axle and motor spindles A, B, fitted with loose balls or rollers
working in a collar or box the ends of said collars being connected by an adjust-
able sleeve or union piece G.
Figure 3, shows a side elevation also, but with the spindles of the antifriction
rollers or wheels fixed to the collar said collar may have an adjustable sleeve, or
union piece G or the antifriction rollers or wheels may be fitted with rods E, E¹, as
shown by Figure 4.
Similar letters of reference indicate like parts. A, is the axle of the car;
B, the motor spindle; C, is the car wheel and D, the friction driving wheel.
Ci, D', are anti-thrust wheels for the axles A. B. E, E, the guide rods;
F, F, the springs; G, G', the nuts to regulate same; H, H', the bearing blocks
to carry said rods and the spindles of the anti-thrust wheels C, D'. I, I', are
small antifriction wheels connected to the rods and centered thereupon to bear upon
the axles A, B, respectively. J, is the accessary toothed gearing.
Having thus particularly described and ascertained the nature of the said
invention, I wish it to be distinctly understood that I do not confine myself to
the precise details, relative proportions or dimensions of the various antifriction
devices herein before described and illustrated in the accompanying drawings, as the
same may be considerably varied without departing from the invention--but what
I claim is.
1. The general arrangement and construction of mechanism for reducing friction
in axles or spindles of frictional driving gear substantially as set forth.
2. The use and application of spring pressed antifriction rollers or wheels to the
purpose of reducing friction in the revolving surfaces of friction driving gear when
mounted and operating substantially as set forth.
3. The combined improvements in frictional driving gear of the rods springs
and bearings holding the antifriction rollers or wheels (which may have toothed
gear) in close contact with the working parts of said friction driving gear as and
for the purpose specified and substantially as set forth.
Dated this 30th day of June 1892.