IMPROVEMENTS IN THE MEANS EMPLOYED FOR TRANSMITTING MOTION ON RAILWAYS
Year: 1874

page_text: PROVISIONAL SPECIFICATION left by John Garrett Tongue at the
Office of the Commissioners of Patents, with his Petition, on the
30th April 1874.-A communication from abroad by Orange
McConnell Chamberlain and Lehman Henry Mandelbaum, both of
the City, County, and State of New York, United States of
America.
་
I, JOHN GARRETT TONGUE, of the Firm of Tongue & Birkbeck,
Patent Agents & Engineers, of 34, Southampton Buildings, Chancery
Lane, in the County of Middlesex, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN THE MEANS EMPLOYED FOR TRANSMITTING
MOTION ON RAILWAYS," (a communication to me from abroad by Orange
McConnell Chamberlain and Lehman Henry Mandelbaum, both of the
City, County, and State of New York, United States of America,) to be
as follows:-
-
This Invention relates to improved means for communicating pro-
pelling action to and simultaneously arresting the revolving motion of
the several wheels of the trucks or cars in a railway train, or certain of
them, whereby increased traction or a quicker stoppage and sundry
other advantages are obtained,

page_text: The Invention also consists in a certain combination of toothed wheels,
pinions, chain pulleys, and chains for transmitting or arresting the
propelling power throughout, or by the several wheels of the cars, or
truck in a train, or certain of them.
Figure 1 of the Drawings hereto annexed represents a longitudinal
sectional elevation on the line x, x, of the adjacent front and rear trucks
of two vehicles in a railroad train with the Invention applied, and
Figure 2 a plan of the same.
A and A¹ are two consecutive railway cars or other vehicles with the
Invention applied; Figure 2 is a plan of the same; B, C, and B¹, C¹, are
the axles of said trucks, and D, D, the running wheels thereof.
E is a
chain pulley on the axle B of the truck A, to which axle motion may be
communicated from the locomotive in the same manner as motion is
communicated from the axles of one truck to the axles of another, and
which as represented in the Drawing is as follows:-On the axle C of
the same truck A is another chain pully F of the same diameter as the
pulley E, and coupled therewith by a chain G for the purpose of making
the one pulley the driver of the other. H is a spur wheel on the shaft C,
and which may be fast to the one side or face of the pulley F. This
wheel gears with a pinion I, which may be carried by the same truck A,
and is here so shown, or may be an attachment to the adjacent truck,
the same forming an intermediate connection when the trucks A, A¹, are
united by the usual or any suitable couplings for transmitting motion
from the rear axle of the back truck of the one vehicle to the front axle
of the forward truck of the next vehicle. To this end the pinion I also
gears with a spur wheel H' on the axle B₁ of the truck A¹, and a
pulley E¹ on said axle transmits motion by a chain G¹ to a pulley F" on
the axle C. This system of gearing may be extended throughout the
whole train of vehicles, including the locomotive, thus giving increased
traction or propelling power, and preventing grinding or wearing of the
rails by the engine wheels slipping or moving without producing
traction, as is apt to be the case when the propelling power is confined
to the locomotive. Furthermore, by such system of propelling con-
nection between the several vehicles of the train, brake power applied to
the engine wheels, or to the wheels of any one vehicle in the train, will
be communicated to all the wheels of the train. Thus all the wheels of
the train move or stop in common; likewise, when travelling round
curves, each vehicle in the train is exerting a separate propelling power

page_text: on its own particular part in the curve it is travelling, and that tendency
to draw it to one side by the pull of the engine when not having its
propelling power transmitted as described is materially reduced or
obviated.
The means too, shown for transmitting motion, have a tendency to
prevent the one car from riding on the other in case of collision or
sudden stoppage.
The gear wheels, by which the propelling motion is transmitted, may
be fitted to slide laterally for the purpose of breaking connection when
required.
Instead of toothed gears, pulleys and chains may be used to transmit
motion from the rear axle of one truck to the front axle of the next;
duplicate pulleys capable of being thrown in or out of connection by a
sliding clutch being arranged side by side at a suitable distance apart in
the place occupied by the intermediate toothed wheel or pinion shown
in the Drawing.