Improvements in Gear for Transmitting Rotary Motion.
Year: 1896

page_text: Date of Application, 29th Jan., 1896
Complete Sensification Loft 20th Oct 1806 Aented 10th Dec.
1896
PROVISIONAL SPECIFICATION.
Improvements in Gear for Transmitting Rotary Motion.
We, GEOFFREY HOWARD and EDWARD TENNEY BOUSFIELD, both of
Bedford, in the County of Bedford, Engineers, do hereby declare the nature of
this invention to be as follows:-
Our invention relates to gearing chiefly designed for use in connection with
motors operated by the explosion of combustible vapour or gas and air, or by
electricity, and is intended to render such motors more suitable for locomotive,
tractive and like purposes thau heretofore.
According to our invention we mount the motor on a frame which is carried by
suitable wheels for propulsion and steering. The crank shaft of the motor is
placed parallel with the main axle and has a suitable gear wheel and pulley keyed
upon it for rotating the axle.
As such motors ordinarily run continuously in one direction and it is necessary
to rotate the axle backwards or forwards, and also make such change quickly and
without shock to the motor or carriage, by our present improvements we mount
two pairs of "sun and planet" wheels on the axle, one of such pairs of wheels
having external teeth, and the other pair internal teeth of the required differential
proportions. The larger wheel of each pair is keyed to the axle, the other wheel
of each pair is free to revolve hut it is controlled by a frictional surface forming
part of it, so that at the will of the attendant it can be arrested partially or wholly,
in the latter case it becomes fixed. The "planet" pinions for each pair of wheels
are in one piece or joined together and are carried by stud or crank pins projecting
from each side of the driven gear wheel or pulley; these "planet" pinions gear
into the differential internal and external wheels and revolve continuously. As
long as the "snu" wheels with their friction surfaces are not retarded no rotation
of the axle takes place but when either of the "sun" wheels is retarded through
its friction surface the axle is rotated in the desired direction according as the
internal or external "sun" wheel is arrested.
One wheel of the pair of internal wheels is preferably mounted on a bearing or
seating which forms part of the drive wheel in such a manner as to allow the stud
or crank pin carrying the pinion to project through both the internal rings of
teeth; the internal ring of teeth with its friction surface is thus free to revolve
upon its seating whilst the other internal wheel is keyed to the axle.
Although we have described our gear as arranged in connection with a motor
for driving a carriage it is obvious that it can be applied for transmitting motion
for other purposes.
شايدي
ليوم
.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.

page_text: We, GEOFFREY HOWARD and EDWARD TENNEY BOUSFIELD, both of
Bedford, in the County of Bedford, Engineers, 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 gearing chiefly designed for use in connection with
motors operated by the explosion of combustible vapour or gas and air, or by
electricity and which are capable of rotating in one direction only, the object of
our invention being to render such motors more suitable for locomotive, tractive
and like purposes than heretofore.
According to our invention we provide for causing a continuous rotation in one
direction to produce motion in the same or a reverse direction through epicyclic
gearing and we provide for locking one of the wheels of the train to transmit
the motion the said wheel when not so locked running idly without transmitting
motion.
In carrying out our invention we mount two pairs of "sun and planet" wheels
on the axle or shaft to be driven, one of such pairs of sun wheels having external
teeth and the other pair internal teeth of the required differential proportions.
The larger wheel of each pair is keyed to the axle, the other wheel of each pair is free
to revolve but it is controlled by a frictional surface forming part of it, so that at
the will of the attendant it can be arrested partially or wholly. In the latter case
it becomes fixed. The "planet" pinions for each pair of wheels are in one piece
or joined together and are carried by stud or crank pins projecting from each side
of the driven wheel or pulley. These "planet" pinions gear into the differential
internal and external wheels and revolve continuously. As long as neither of the
smaller "sun" wheels with its friction surface is retarded, no rotation of the axle
takes place but when either of the "sun" wheels is retarded through its friction
surface the axle is rotated in the desired direction according as the internal or
external "sun" wheel is arrested.
One wheel of the pair of internal wheels is preferably mounted on a bearing or
seating which forms part of the driving wheel in such a manuer as to allow the
stud or crank pin carrying the pinion to project through both the internal rings of
teeth; the internal ring of teeth with its friction surface is thus free to revolve
upon its seating whilst the other internal wheel is keyed to the axle.
Although we have described our gear as arranged in connection with a motor
for driving a carriage it is obvious that it can be applied for transmitting motion
for other purposes.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a sectional elevation of transmitting gearing arranged in accordance
with our invention:
Figure 2 is a section on the line 2-2 of Figure 1; and,
Figure 3 is a section on the line 3-3 of Figure 1:
Figure 4 is a sectional view illustrating the modification of our invention; and,
Figure 5 is a section on the line 5-5 of Figure 4:
Figure 6 is a plan view shewing the application of the arrangement shewn in
Figures 1 to 3 to a carriage; and,
Figure 7 is a similar view shewing the application of the arrangement shewn in
Figures 4 and 5 to a carriage.
In the arrangement of our invention shewn in Figures 1 to 3 a is the axle or
shaft to be driven and 6 is the wheel which is continuously rotated by the motor.

page_text: In
e is the externally toothed "sun" wheel fixed on the axle a, d is the externally
toothed loose "sun" wheel having fixed to or formed in one piece with it the
friction pulley e and f is the double planet pinion mounted on a pin 9 on the
wheel and serving for transmitting the motion of the wheel & to the shaft a.
connection with the friction pulley e fixed to the gear wheel d is a brake band.
When the band is loose upon the said pulley no movement is transmitted through
the described gear to the shaft a, the friction pulley e and gear wheel d simply
turning idly owing to the engagement of the double pinion with the "sun"
wheel e fixed upon the said shaft. When, however, the brake band is tightened
on the said brake pulley e, so as to lock the wheel d, the rotation of the planet
wheel around the "sun wheels will cause the rotation of the wheel c and
consequently also of the axle a to which it is keyed.
The arrangement of gearing just described simply serves for driving the shaft a
in the same direction as the wheel 6 but more slowly. To permit of the vehicle
being driven in the reverse direction without altering the direction of rotation of
the wheel b, we arrange, on the opposite side of the said wheel to that upon
which the "sun" wheels c and d are placed, the internally toothed "sun
wheels g, h, the former of which is keyed to the shaft a whilst the latter is capable
of rotating upon the hoss i formed on the wheel b. jis a double pinion which
engages with the two wheels g', h. The surface of the wheel his formed to
receive a brake band so that when the band is tightened to hold the said wheel /
against rotation, motion will be imparted to the wheel g' and shaft a in a well
known manner.
Figure 6 shews the arrangement of this gearing upon a frame or carriage,
k indicating the motor and the chain for transmitting the power of the motor to
the wheel of the gearing. m indicates the well known balance gear used in
connection with a divided shaft for permitting both wheels to be positively driven
and at the same time permitting one of them going at a different speed from the
other when turning corners.
Instead of the arrangement of gearing shewn in Figures 1 to 3 we sometimes
use the arrangement shewn in Figures 4 and 5. In this modification the wheel b
has formed upon it a ring of bevel teeth and fixed to the shaft a is a bevel
wheel o the teeth of which correspond with those of the teeth n. Between the
teeth and wheel o a wheel p is mounted loosely upon the shaft which wheel
carries one or more pinions g engaging with the teeth and the bevel wheel o.
The periphery of this wheel is adapted to receive a brake band by means of
which the said wheel p will be retarded or held stationary. When the said wheel p
is not held by the band it will rotate idly upon the axle owing to its engagement
with the teeth n upon the wheel b. When, however, the band r is tightened to
retard or hold the said wheel p stationary the motion of the wheel will be
transmitted to the wheel o fixed to the shaft through the medium of the pinion or
pinions whereby the shaft a will be rotated but in an opposite direction.
In order to provide for rotating the ebaft a in the same direction as the wheel
we provide a friction clutch s adapted to lock the shaft a to the wheel b by
engaging with a flange t on the said wheel as will be clearly seen by reference to
Figure 4.
The application of this latter form of gearing is shewn in Figure 7. In this
figure it will be noticed that the gearing, instead of being placed upon the axle of
the wheels to be driven, is placed upon a counter shaft which is connected with the
said wheels by pinions as at u, u engaging with gear wheels r, ".
In this arrangement we have shewn the shaft a as being made tubular and
having a supplementary axle a' within it. One wheel of the balance gear m and
one of the pinions u are fixed to the shaft a' and the other wheel of the balance
gear and the other pinion to the hollow shaft a as will be clearly seen by
reference to Figure 4.
It will be obvious that the arrangement of a pulley and brake in combination
with one of the wheels of an epicyclic train permits of the power being applied

page_text: very quickly and steadily without any shock to the parts, as considerable slip
takes place between the brake band and pulley whilst the brake is being applied.
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 combination with a wheel rotating loosely upon a shaft and adapted to
be driven in one direction only, of an epicyclic train of gearing for transmitting
the motion of the said wheel to the shaft, one of the wheels of the train having
arranged in conjunction with it a friction pulley or the like to permit of the said
wheel running idly or transmitting the motion of the rotating wheel to the shaft,
substantially as described.
2. The combination with one of the wheels of an epicyclic train of gearing, of a
pulley and friction band for locking the said wheel of the train, substantially as,
and for the purpose, described.
3. The improved transmitting gearing consisting of two epicyclic trains each of
which has one of its wheels designed to be held against rotation when desired,
substantially as described by reference to Figures 1 to 3 of the drawings.
4. The improved transmitting gearing arranged, substantially as described by
reference to Figures 4 and 5 of the drawings, wherein the motion in a reverse
direction to the driving wheel is obtained through an epicyclic train of gearing one
or more of the wheels of which is carried by a ring or pulley designed to be locked
to hold it against rotation, substantially as described.
5. The combination with transmitting gearing of the kind hereinbefore described,
of a balance gear (m), substantially as, and for the purposes, set forth.
Dated the 29th day of October 1896
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.