Improvements in or connected with Reversing Gear for Motor Driven Vehicles.
Year: 1896

page_text: Date of Application, 9th Oct., 1896
Complete Specification Left 8th July 1897-Accented 14th Ama 1807
PROVISIONAL SPECIFICATION.
Improvements in or connected with Reversing Gear for Motor Driven
Vehicles.
We, FRANK FREDERICK WELLINGTON of 100c Queen Victoria Street, Engineer,
EDWIN PERCIVAL ALLAM of 14 Hatton Garden, Electrical Engineer, both in the
County of London, and HERBERT WALTER WALPOLE DRUMMONDS, of 127 Stratford
Road, Plaistow, in the County of Essex, Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention refers to gearing for reversing the direction of motion of Motor
driven Vehicles, while the motor is driven in one continuous direction, the said
gearing intervening between the motor shaft and a shaft or wheel from or by
which the road wheels are driven.
According to the invention the gear is operated or employed with friction
devices. By one construction we provide, keyed upon the motor shaft, an ordinary
circumferentially grooved friction drum, while on the driven shaft or shafts to be
driven, we loosely mount a frame, capable of being rocked by a lever, operated
or rocked in any convenient manner. Between the driven shaft and the motor
shaft, the rocking frame carries two toothed wheels in gear with one another,
one axis being to the right, and the other to the left, of a line drawn between the
centres of the motor and driven shafts. Each of these toothed wheels (which we
may call compound wheels), carries, or is formed with, a friction drum, either of
which drums is adapted to engage with the friction drum, on the motor shaft. Thus
for example a spur wheel is keyed upon the driven shaft, with which wheel one
of the compound wheels is in gear, thus when the lever is in one position com-
pound wheel No. 1 gears with the motor shaft and with compound wheel No. 2,
while the latter gears with and drives the driven shaft in one direction, and by
changing the position of the lever the compound wheel No. 2 gears with the motor
shaft, and the driven shaft, and the compound wheel No. 1 is out of gear, and so
reverses une direction of motion. According to another arrangement, we key
upon the motor shaft two spur wheels, between which and upon the same shaft,
we loosely mount a large wheel having teeth on its outer periphery, which latter
are always in engagement with a spur wheel keyed on the driven shaft. This
large wheel is also provided on each side of its central web with internal teeth,
respectively in the same planes as the toothed wheel keyed on the motor shaft,
hereafter called driving wheels.
Between one driving wheel and a set of the internal teeth of the large wheel
we provide a single pinion, always in gear with both. This pinion is free to
revolve on a stud carried by an arm or disc loosely mounted upon the motor shaft,
and provision is made for holding the arm or disc 'stationary, by the friction
device, such as a brake.
Between the second driving wheel and the second internal teeth of the Jarge
wheel, we provide two meshing pinions gearing with both, and carried loosely on

page_text: studs, carried by a second arm or disc, loosely mounted on the motor shaft, and
held stationary, when required, as was the first disc by friction devices.
By this mechanism when the first disc is held stationary, the driven shaft is
revolved in one direction, while the second disc is freely carried round, and when
the second disc is held stationary, and the first disc released, the driven shaft is
operated in the reverse. direction,, while the first disc is freely carried round.
The driven shaft might be the road wheel shaft, or it might be a countershaft,
connected with the road wheel shaft by chain and sprocket wheel, or by any other
convenient gear.
1800
BREWER & SON,
London and Leeds, Agents for the Applicanis.
COMPLET
Improvements in or connected with Reversing Gear for Motor Driven
Vehicles.
We, FRANK FREDERICK WELLINGTON of 100c Queen Victoria Street, Engineer,
EDWIN PERCIVAL ALLAM OF 14 Hatton Garden, Electrical Engineer, both in the
County of London, and HERBERT WALTER WALPOLE DRUMMONDS, of 127 Stratford
Road, Plaistow, in the County of Essex, Engineer, 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 refers to gearing for reversing the direction of motion of motor
driven vehicles, while the motor is driven in one continuous direction, the said
gearing intervening between the motor shaft, and a shaft or wheel, from or by
which, the road wheels are driven, and according to the invention, the gear is
operated or employed in combination with friction devices, all as hereafter
`described.
In order that our invention may be readily understood we will describe same
with reference to the accompanying drawings, whereon Fig. 1 is a side elevation
of a construction of our improved gearing as aforesaid, Fig. 2 being a sectional
end elevation, Fig. 3 a plan view, and Figs. 4 and 5 detail views of same:
Fig. 6 is a part sectional elevation of another arrangement, or construction of the
apparatus, according to our invention and Fig. 7 is a cross section of same.
By one construction, and as shewn with reference to Figs. 1 to 5, we provide,
keyed upon the motor shaft A, an ordinary circumferentially grooved friction
drum B, while on the driven shaft or shafts to be driven C, we loosely mount a
frame D, capable of being rocked by a lever or connecting rod E, ioperated in
any convenient manner. Between the driven shaft C and the motor shaft A, the
rocking frame D carries in bearings two shafts F and G, which project upon each
side of the frame; upon these two shafts, on one side of the frame, there are keyed
two toothed wheels which are in gear one with the other, and upon the same shafts,
upon the other side of the frame 1, there are keyed two friction drums F² G²;
one or the other of the drums F G are adapted to become engaged with the
friction drum B, on the motor shaft A, according as the frame D is rocked to one
side or the other on the axis C. Upon the driven shaft Ciwe key a spur wheel H
to gear with one of the spur wheels For G', in the example shewn with the spur
wheel F.
By this arrangement, when the lever or connecting rod E, brings the frame D
into one position, (into that shewn) the friction drum G driven by the spur,
wheel G engages with the friction drum B of the motor shaft A, and by clang-

page_text: ing the position of the frame D the drum G3 is brought out of engagement, and
the drum F into engagement with the drum 13 of the motor shaft A whereby the
direction of motion of the motor shaft A is reversed.
According to another arrangement and as shewn by Figs. 6 and 7, we key upon
the motor shaft A two spur wheels L M, between which and upon the same shaft,
we loosely mount a large wheel N having teeth on its outer periphery, which
latter are always in engagement with a spur wheel J keyed on the driven shaft
(not shewn). This large wheel N is also provided on each side of its central web
with two sets of internal teeth N N respectively, in the same planes as the toothed
wheels L M, koyed on the motor shaft A, hereafter called driving wheels.
Between one driving wheel say M, and a set of the internal teeth say N³ of the
large wheel N, we provide a single pinion P always in gear with both, the wheel M
and the teeth Ne. This pinion P is free to revolve on a stud Q, carried by an
arm or disc R loosely mounted upon the motor shaft A, and provision is made for
holding the arm or disc stationary, by a friction device such as a brake S.
Between the second driving wheel L and the second internal teeth N¹ of the
large wheel N, we provide two meshing pinions T T¹, gearing with both the
internal teeth N¹ of the wheel N, and with the driving wheel L. The pinions T T
are carried loosely on studs T T, carried by a second arm or disc R' loosely mounted
on the motor shaft A, and held stationary, when required as was the first dise
by friction devices such as a brake S'.
By this mechanism when the first disc R is held stationary, the driven shaft
upon which the wheel J is mounted, is revolved in one direction, while the second
disc R is freely carried round, and when the second disc R' is held stationary
and the first disc R released the driven shaft aforesaid is operated in the reverse
direction, while the first disc R is freely carried round.
The driven shaft, upon which the spur wheel J is mounted, might be the road
wheel shaft, or it might be a countershaft, connected with the road wheel shaft by
chain and sprocket wheel, or by any other convenient gear.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
i. In reversing gear for motor driven vehicles, the combination of parts,
arranged and acting substantially as described and illustrated with reference to
Figs. 1 to 5 of the acompanying drawings.
2. In reversing gear for motor driven vehicles, the combination of parts arranged
and acting substantially as described and illustrated with reference to Figs. 6
and 7 of the accompanying drawings.
Tate this 011. T.... 1907
BREWER & SON,
London and Leeds, Agents for the Applicants.