Im. PROVEMENTS IN LOCOMOTIVES AND OTHER RAILWAY CARRIAGES
Year: 1869

page_text: PROVISIONAL SPECIFICATION left by Charles de Bergue at the Office
of the Commissioners of Patents, with his Petition, on the 15th
July 1869. Partly a communication from abroad by Camille
Faure, of St. Petersburg, in the Empire of Russia.
I, CHARLES DE BERGUE, of 10, Strand, in the City of Westminster,
Engineer, do hereby declare the nature of the said Invention for "Im.
PROVEMENTS IN LOCOMOTIVES AND OTHER RAILWAY CARRIAGES," the result partly
of a communication made to me from abroad by Camille Faure, of
St. Petersburg, in the Empire of Russia, and partly of Invention and
discovery made by me, to be as follows:-
One object of these improvements is to obtain the requisite grip or
hold upon the rails of a railway by distributing the weight without
unduly loading any individual pair of wheels of the engine and causing
unnecessary wear of tyres and rails, and at the same time to afford
facilities for ascending steep inclines with quick curves or taking heavy
loads on level lines.
It will assist the explanation to bear in mind that in going round the
curves of a railway the length of the inner rail is shorter than that of

page_text: the outer, and that when the curves are of short radius the ordinary
direct coupling or connecting rods from wheel to wheel of adjoining
carriages or engine and tender are inadmissable, by reason of the varying
length or distance (while travelling) between the wheels to be coupled,
and similarly the driving the bogey wheels of a bogey supported loco-
motive by or from cylinders fixed or carried on trunk or frame resting
on the bogey and driving the bogey wheels has been inadmissable, by
reason of the varying lengths (while travelling) between the working
parts to be connected or coupled.
Now I believe I have overcome these difficulties, and the Invention
comprises the constructing bogey supported locomotives with cylinders
fixed or carried on the boiler, or trunk, or frame which rests on a bogey,
and with the said cylinders driving the bogey wheels.
And the constructing locomotives bogey supported, or otherwise, with
compound compensation couplings between the wheels or working parts,
which by connecting rods between them are required to be driven
one from the other, the said couplings permitting or giving out the
desired extent or fixed amount of motion to the wheel or part driven,
although the length between the driving and the driven parts will
somewhat vary, also the working the valve or valves of one cylinder of
a locomotive from off the motion of the piston rod of the other cylinder,
and vice versa.
And the mounting on a separate carriage or tender accompanying
a locomotive engine and to be used therewith a supplemental or
auxiliary steam boiler and furnace with provision for blast, the said
carriage or tender being without steam cylinders or itself not subject
to the direct action of the steam which is intended for use in the
engine proper, only the steam tender in some cases having its wheels
driven to take a grip or hold on the rails by a system of rocking shafts
and levers and connecting rods from rocking shafts and levers upon and
driven by the engine proper.
And the constructing or arranging rocking shafts to be used for
transmitting driving power from cylinders to wheels, or from wheels to
wheels, whether of engines or tenders, as the case may be, in pairs side
by side of each other, and not in a line one with the other as in the
Invention the subject of Letters Patent No. 982, A.D. 1868, the present
construction or arrangement permitting the said shafts to be of greater
length.

page_text: And the constructing locomotive engines having two or more pairs of
wheels coupled as driving wheels and having one or more additional
pairs of wheels, so that one of the said lastly mentioned pairs may be
driven by a pair of steam cylinders or one steam cylinder additional
to and independent of those employed for driving the coupled wheels.
And the constructing or arranging railway carriages which have the
weight supported or mainly supported at two parts or places in respect of
the length with the one part or place carried on or by a pair of wheels
or on or by a four wheeled or other bogey, such wheels or the wheels of
the bogey not being driving or driven wheels, and with the other part
or place carried on or by an adjoining engine or tender or carriage whose
wheels are driving or driven wheels, and which are by this construction
or arrangement assisted in their grip or hold on the rails by the
additional weight of the supported carriage and the varying load it
may carry. (This improvement is to be understood as including the
constructing of the supporting engine, tender, or carriage to carry the
part or place of the carriage whose weight it partly supports.)
And the coupling or connecting together the ends of locomotives
and tender or of other carriages by a coupling permitting not only
horizontal play and vertical play, but also permitting a sliding play
transversely at or across end of one or of both the carriages connected.
And the mode of performing the Invention is as follows:-The
cylinders on boiler or trunk or main body of engine may be made to
drive the bogey wheels by the use of the improved compound compen-
sation coupling, and the coupling may be effected by two sets of
parallelogramic motions or arrangements of rods or bars supported on
pivots or centres each respectively upon the driving and driven part, the
two motions or arrangements being employed in combination with
connecting rod or bar between the said parts. And the working of the
valves may be controlled or regulated by the said parallelogramic
motions or arrangements, so as that they may act properly in reference
to the position of the cranks. The steam from the boiler of the steam
tender may be conveyed to the boiler of the engine proper by pipe
or tube couplings, jacketted as required.
tender may be created by blow off from
directly by steam from its own boiler, or
system of rocking shafts and levers between engine and tender when
employed being, as in the Invention No. 982 above referred to, or side
The blast to furnace of
exhaust from cylinders, or
by fan or otherwise. The

page_text: by side in accordance with one special improvement comprised by the
present Invention. When the pairs of rocking shafts are to be used side
by side of instead of in line one with the other, care must be taken that
the length of the connecting rods employed between the levers connected
are so adjusted as to compensate for the difference of position of the
shafts.
When additional steam cylinders are employed under the circum-
stances above set forth they are to be outside cylinders if those on the
coupled wheels are inside cylinders, and they are to be inside cylinders
(or one only instead of a pair of inside cylinders) if those for the coupled
wheels are outside cylinders, or they may be all outside or all inside
cylinders. And the valves of the additional cylinders or cylinder may
be worked by levers, tappets, or other apparatus attached or applied to
their own piston rods.
..
It is proposed that the additional cylinders should be started only
after the main or principal cylinders have put the engine in motion, but
in stopping the steam it should be cut off from all the cylinders at
once.
The improved specially supported railway carriage may have an
ordinary pair of wheels or be carried on an ordinary bogey in one part
or place, and at the other position of support be made to rest on
bracketed horns or bed plate projecting from the adjoining engine or
tender, or the carriage or otherwise, and with the herein specified
improved or other coupling between them.
The improved coupling for the end of locomotive tender and carriages
may be made of plates with lugs or other provision for sliding on rods
at or near the ends, and with pivot or pin joint between plate on one.
carriage and that on another.