A Combined Multiple Speed and Balance Gear for Motor Carriages.
Year: 1896

page_text: Date of Application, 4th Feb., 1896
Complete Specification Left. 4th Nov. 1896-Accented 30th Jan
1307
PROVISIONAL SPECIFICATION.
A Combined Multiple Speed and Balance Gear for Motor Carriages.
We ERNEST JOHN CLUBBE and ALFRED WILLIAM SOUTHEY, both of
16 Elm Street Gray's Inn Road, London W.C. Electrical Engineers do hereby
declare the nature of this invention to be as follows:-
This invention relates to a combined multiple speed and balance gear for motor
carriages and it has for its object to enable the greatest number of different speeds
and a balance motion to be obtained with the fewest number of parts constituting
the change gear. By the following arrangement four different speeds may be
obtained which is sufficient to meet all the exigencies of ordinary working.
The first motion shaft. is geared by two gear wheels of different diameters with
two gear wheels of correspondingly different diameter on a second motion shaft
and in combination with an intermediate clutch such as that described in the
Specification of another Patent granted to us dated the 2nd day of March 1895
No. 4518, operated through the medium of a sleeve whereby either of the said
gear wheels may be put into driving connection with the second motion shaft, the
other running loose. Upon the said shaft are two other gear wheels of different
diameters which are in gear with spur rings of correspondingly different diameters
in one with each other and forming the external member of a balance gear of the
equational box or other form of epicyclic gear whose bevel pinions are on the two
members of the divided driving wheel axle. The two wheels on the second motion
shaft with which it is in gear are capable of being put into driving connection with
the said shaft through a clutch operated by the adjustment of the shaft in the
longitudinal direction.
If then the wheels on the first motion shaft be distinguished as numbers 1 and 2,
those on the second motion shaft as 3, 4, 5, 6, and those on the balance gear as 7, 8,
by suitably adjusting the clutches on the second motion shaft the following four
combinations of trains of gearing may be obtained with differences of speed
corresponding to the differences of ratio, riz. :-wheels 1, 3, 5, 7; 2, 4, 6, 8;
1, 3, 6, 8; 2, 4, 5, 7.
Dated this 4th day of February 1806
We, ERNEST JOHN CLUBBE and ALFRED WILLIAM SOUTHEY both of
16, Elm Street, Gray's Inn Road, London, W.C. Electrical 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:-
This invention relates to a combined multiple speed and balance gear
carriages and it has for its object to enable the greatest number of different speeds

page_text: and a balance motion to be obtained with the fewest number of parts constituting
the change gear.
By the arrangement illustrated in sectional plan view in the accompanying
drawing forming part of this specification four different speeds may be obtained
which in conjunction with balance and reversing motions will suffice to meet all
the exigencies of ordinary working.
The first motion shaft A of the multiple speed gear is geared by two pinions BC
of different diameters keyed upon it, with two gear wheels D E of correspondingly
different diameters mounted loose on a second motion shaft F and capable of being
put either the one or the other into driving connection with said shaft by a
combined friction and dog clutch of the kind described in the Specification of
another Patent granted to us dated the 2nd day of March 1895 No. 4518. Upon
the said shaft F are loosely mounted two other pinions G H of different diameters
which are also capable of being put into driving connection with said shaft by a
similar clutch and are in gear with spur rings I J of correspondingly different
diameters in one with each other and forming the external member of a balance
gear of the equational box or other form of epicyclic gear. This external
member I J of the balance gear rotates about the common axis of the two
members K K of the driving shafts of the vehicle and upon radial axes carried by
such external member are loosely mounted the pair of bevel pinions L L which
are in gear with a pair of bevel pinions M M' keyed on the two members K K' of
the divided driving wheel axle.
By suitably adjusting the clutches on the second motion shaft F the following
four combinations of trains of gearing may be obtained with differences of speed
corresponding to the differences of ratio, viz. :-wheels B D G J; CEHI;
BDHI; CEG J.
The clutch whereby either of the wheels D E may be put into driving connection
with shaft F consists of a male member X having peripheral dogs and carried by
a sleeve sliding upon and splined to the shaft F, the male member engaging with
corresponding dogs in a socket D' or E' in the hub of the wheel D or E as the
case may be. Each wheel carries a friction ring N also formed with dogs for
engagement by the dogs of the male member X, said ring being held friction tight
to its wheel by a spring-pressed clamping ring N¹ secured by bolts O and springs
as shewn, the meeting faces of the friction and clamping rings being bevelled as
shewn so as to retain the movable friction ring N in concentric position and apply
the pressure necessary to ensure the requisite amount of driving friction between
the rings N, N' so that before the male member X enters into, or after it passes
out of, engagement with the dogs of the wheel socket the driving is effected during
the transition through the friction ring so as to prevent shocks. Between the
friction rings of the two wheels D E sufficient clearance is left in order that the
male member X shall be free from both when in its mid position, so as to provide
for the motor running free, if required.
This clutch gear is enclosed by a cylindrical casing P acting also as a distance
piece between the wheels D E.
The clutch by which the one or other of the pinions G H is connected with the
shaft F is similar except that only one friction ring N is employed, said ring being
applied to the larger pinion G in the manner above described for engagement
by the dogs of the male member X' of the clutch which passes directly therefrom
to the socket of the pinion H and conversely, there being in this case no need of
any intermediate clearance space.
If it is required to provide for reversing the direction of running, the usual
reversing device may be added, consisting of a third pinion R gearing through a
pinion S on an intermediate shaft T with a third spur wheel U loose on the second
motion shaft F and capable of being put into driving connection therewith by a
clutch X M similar to the one first described, except that in this case there is
only one wheel to be geared with the shaft. It is essential that this clutch be not
put in gear except when the clutch X is out of gear with both wheels D E.

page_text: Having now particularly described and ascertained the nature of the said:
invention and in what manner the same is to be performed we declare that what
we claim is :-
The combination of a system of eight spur wheels in continuous engagement
two and two, four of which are capable of running freely on their spindles,.
suitable clutches for throwing into gear any one of the four possible combinations
of wheels, and balance gear having two spur wheels of the system forming its.
external driving member, for the purposes described.
Dated this 4th day of November 1896.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.