Improvements in Locomotive-cars.
Year: 1892

page_text: Date of Application, 12th Sept., 1892-Accepted, 22nd Oct., 1892
COMPLETE SPECIFICATION.
Improvements in Locomotive-cars.
I, WILHELM MAYBACH of Cannstatt, in the Kingdom of Württemberg, Empire
of Germany, Engineer do hereby declare the nature of my said invention, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
My invention relates to a locomotive-car in which the vibrations of the motor
are prevented from being transmitted to the carriage-body, and in which the. axle
of the driving gear and that of the driving-wheel are always kept at a constant
distance from each other, independently of the shocks to which the carriage may be
subjected.
My invention will be more readily understood by reference to the accompanying
drawings, in which:
Fig. 1 is a side elevation showing the rear portion of a locomotive-car fitted with
my improvements.
Fig. 2 is a plan of the same.
Like letters indicate like parts in both views.
D is the carriage-body which is supported partly in usual manner by means of
springs e, and partly by means of elastic arms 92, which are nearly horizontal, and
the ends whereof are secured to hangers k fixed to the carriage-body D. The other
end of the said arms g² is made broader in the vertical direction, as shown at g',
and is secured to the fixed (i.e. non-rotating) axle b of the carriage-wheels. At
the place where the breadth of the arms g¹² decreases, I provide the bearings for
the axle C of the driving-gear, which consists of two belt-pulleys B B¹, and of two
toothed wheels i engaging with the annular wheels secured to the rotatable
carriage-wheels W. It will be understood that the arms g' will be almost entirely
rigid between the axles C and b. a is the main shaft of the motor and rotates in
bearings which are provided at the ends of elastic arms / secured to the body D of
the carriage. The upper part of the motor A is likewise held by means of hori-
zontal elastic stays m, the latter being preferably rigidly secured to the body D,
and to the motor A. by neans of a joint admitting a vertical movement.
The operation of the mechanism is as follows
When the motor A is started, the arms 2 will be bent somewhat till the pressure
between the flanks of the teeth of the wheels i and his sufficient to set the carriage
in motion. The arms g¹, however, will not be bent, and in consequence thereof the
axles and C will remain parallel to each other and the gearing of the wheels i
and h will be perfect, independently of the depression of the axle C. When one of
the wheels W strikes against an obstacle, the shock will not cause the wheels i
and to come out of gear, as the distance between the axles and C is invariable.
The carriage-body D will be but slightly or not at all subjected to shocks, these
being deadened by the springs e and the elastic arms g². Finally the vibrations of
the motor will not be transmitted to the carriage on account of the elastic sus-
pension of the engine by means of the elastic arms m and the stays 1. The latter
will also counteract in a measure the pressure exerted by the driving belts, and thus
contribute to steady the motion of the engine. The distance between the main-
shaft a of the motor and the axle C of the driving gear remains approximately
constant, notwithstanding the vibrations of the engine, or the shocks to which the
wheels are subjected.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A locomotive-car, the driving gear of which is supported by rigid arms g¹
secured to the axle 6 of the carriage-wheels W, for the purpose set forth.
2. A locomotive-car, the driving-gear of which is supported by rigid arms o
secured to the axle 6 of the carriage-wheels W, and the body D of which is
supported by means of springs e resting on the axle band of elastic arms g² secured
to hangers and forming the continuation of the rigid arms g¹, for the purpose set
forth.
3. In a locomotive-car, a driving gear supported by rigid arms gl secured to the
axle of the carriage-wheels, a body D supported by springs e resting on axle b
and by elastic arms 92, and a motor A, secured in relation to the body D by means
of elastic arms m and stays 1, all constructed substantially as described, for the
purpose specified.
Dated this 12th day of September 1892.
WILHELM MAI DAUN,
By Geo. H. Rayner,
37, Chancery Lane, London, W.C., Agent for the Applicant