Improvements in and relating to Velocipedes.
Year: 1892

page_text: Date of Application, 1st Nov., 1892
Complete Specification Left, 28th July, 1893-4ccepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Velocipedes.
We HARRY LUCAS, of the Firm of Messrs. J. Lucas and Son, Little King
Street, Birmingham, in the County of Warwick, Lamp Manufacturers, and JAMES
ARCHER, Machinist, of the Works aforesaid, do hereby declare the nature of this
invention to be as follows :-
Our invention relates to an improved construction of gear for imparting a speed
of rotation to a wheel mounted on an axle superior to that of the said axle.
On the axle, which is mounted in suitable bearings carried by the fork or frame
of the machine is fixed a spur pinion, with which gears one part of a double spur
pinion mounted on an axle supported in a manner hereinafter described. The
other part of this double pinion gears with a pinion carried by a sleeve encircling"
the axle and carried by one of the two side plates forming part of the hub. The
hub consists of these side plates which are mounted by means of suitable ball
bearings on sleeves encircling the axle and carried by the cases of the bearings
supporting the said axle so that there is no frictional contact between the two
parts. These two side plates are enclosed by means of a cylinder which is fixed
The ends of the
to them by means of screws or bolts in any suitable manner.
said cylinder are adapted to overhang the side plates to receive the spokes of the
wheel. The axle carrying the double spur pinion is supported by means of a
bridge rigidly fixed to and carried by the sleeves fixed to the cases of the bearings
supporting the driving axle. This bridge is so constructed that it rigidly braces
the fork or frame of the machine carrying the axle and thus prevents any side
twist or strain. By this construction the entire gear and the axle can be removed
from the cylinder forming the hub of the wheel by simply disconnecting the side
plates from the cylinder, which greatly facilitates when necessary the repair of
the gear and consequently its maintenance in an efficient condition.
We do not limit ourselves to the use of spur gearing, as bevel or mitre wheels
may be employed.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to Velocipedes.
We, HARRY LUCAS, of the Firm of Messrs. J. Lucas & Son, Little King
Street, Birmingham, in the County of Warwick, Lamp Manufacturers, and JAMES
ARCHER, Machinist, of the Works aforesaid, 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:-
Our invention relates to an improved construction of gear for imparting a speed
of rotation to a wheel mounted on au axle superior to that of the said axle, the
said invention being particularly applicable for gearing up the driving wheels of
velocipedes. In a like manner the gear may also be employed for gearing down
or reducing the speed of the wheels of velocipedes with respect to the driving axles
thereof, the object being, to obtain a gear the parts of which are capable of
adjustment, are completely protected from dust and dirt, and. are efficiently
lubricated, to provide a ready means of varying the ratio of the gearing, to

page_text: efficiently stay and support the axle carrying the intermediate gear, and generally
to improve the construction of these gears.
We attain this end by the construction shown in the accompanying drawing, in
which :-
Figure 1 is a view in sectional elevation of our improved gear.
Figure 2 is a view in plan of the bridge carrying and supporting the axle for
the intermediate gear.
Figures 3, 4 and 5 are views of the plates forming the bridge, and
Figure 6 is a view in side elevation of the bearing case.
Throughout the views similar parts are marked with like letters of reference.
The driving axle A is mounted to rotate in ball bearings of the usual
construction, the cases X, X, of which are formed on or fixed to the fork or
frame of the machine in any convenient manner. On to the axle A is formed or
fixed a driving pinion B. On to the inner and opposing faces of the ball bearing
cases X, X, are fixed sleeves C and C' encircling the axle A but not touching it..
These sleeves are preferably screwed or threaded into recesses on the inner face
of the ball bearing cases X, X, as shown by Figures 1 and 6 of the accompanying
drawing, and they are locked thereto and kept from rotating therein by means of
keys D, D, fitting into slots x, x, in the ball bearing cases X, X, but they may be
fixed to the said ball bearing cases in any other convenient manner.
On the
sleeves C and C₁ are threaded adjustable cones E, E, fitted with any convenient
locking devices. The hub of the wheel consists of two discs or side plates F
and F and a drum or cylinder F' fixed to the discs or side plates F and F' by
means of screws f,f, threading into snugs f¹, f', formed on or carried by the
side plates F and F¹. The ends of the cylinder F' overhang the side plates
F and F and are pierced with holes to receive the spokes of the wheel. The
side plates F and F are shaped to receive cups f,f, forming with the
cones E, E, on the sleeves C and C', races for the balls of the ball bearings
on which the hub revolves. On to the side plate F1 is formed or fixed in
the manner shown in the accompanying drawing, or in any other convenient
manner, a sleeve G encircling the sleeve C. On the sleeve & is fixed to driven
pinion H. On to the inner ends of the sleeve C and C¹ are fixed plates J and J¹
of a triangular shape as shown by Figures 3 and 4 of the accompanying drawing.
These two plates are fixed together at their upper ends by distance bolts K, K,.
and at their lower ends in the manner shown by Figures 1 and 2 of the
accompanying drawing, or by means of a distance bolt in a similar manner to the
top parts thereof. The distance bolts K, K, are extended through the plate J to
carry a curved plate J as shown by Figure 2 of the accompanying drawing. The
triangular plate J and the curved plate J³ carry a stud axle L on which is
mounted a double spur pinion, one part M of which gears with the pinion B
formed on or fixed to the axle A, and the other part M₁ gears with the pinion H
fixed to the sleeve G carried by the side plate F¹ of the hub, balls being
interposed between the pinion and the stud axle as shown. It will be seen that
the plates J, J, and J' form a bridge which rigidly braces the fork or frame of the
machine through the hub of the wheel and thus prevents any side twist or strain.
By this construction of gear the width of the hub of the wheel is not made
unusually large, and the whole gear can be withdrawn from the hub of the wheel
for inspection or adjustment without disturbing the wheel itself or the frame of
the machine, by detaching the side plates F and F' from the drum or cylinder F.
By varying the number of teeth in the pinion H and the double pinion M, M¹,
the ratio of speed may be varied as desired.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved construction of speed gear for cycles, as hereinbefore described
and illustrated by the accommentin

page_text: 2. In a speed gear for cycles, the combination of the sleeves carried by the
bearing cases, and of the bridge carrying the axle for the intermediate pinions, as
and for the purpose set forth.
3. In a geared hub for velocipedes, the combination of the discs or plates F
and F', and of the drum or cylinder F constituting the hub of the wheel; of the
axle A running loosely in ball bearings carried or supported by the fork or frame
of the machine and carrying the driving pinion B; of the sleeves C and C¹
carried by the cases X, X, of the ball bearing supporting the axle A; of the
sleeve G carried by the disc or plate F¹ and carrying the driven pinion H; of the
bridge consisting of the plates J, J', and J2, the two former of which are fixed to
the inner ends of the sleeves C and C¹, and the distance bolts K, K; of the stud
axle L carried by the said bridge; and of the double pinion M, M¹, mounted on
the stud axle L; all combined, arranged and operating, as and for the purpose set
forth.
T
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.