IMPROVEMENTS IN BOGIE TRUCKS USED FOR SUPPORTING RAILWAY LOCOMOTIVE ENGINES, CARRIAGES
Year: 1865

page_text: LETTERS PATENT to William Adams, Locomotive Engineer, of 21,
Carlisle Terrace, Bow, Middlesex, for the Invention of "IMPROVEMENTS IN
BOGIE TRUCKS USED FOR SUPPORTING RAILWAY LOCOMOTIVE ENGINES, CARRIAGES,
Sealed the 18th July 1865, and dated the 13th February 1865.
PROVISIONAL SPECIFICATION left by the said William Adams at the
Office of the Commissioners of Patents, with his Petition, on the
18th February 1865.
I, WILLIAM ADAMS, Locomotive Engineer, of 21, Carlisle Terrace, Bow,
Middlesex, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN BOGIE TRUCKS, USED FOR SUPPORTING RAILWAY LOCOMOTIVE ENGINES,
CARRIAGES, AND WAGGONS," to be as follows:-
The object of my Invention is to provide the means whereby the axles of
bogie trucks shall assume a direction radial or nearly so to the curve round
which the engine, carriage, or wagon may be passing. In order to effect this
object the centre pin attached to the engine, carriage, or wagon frame, is
allowed to have lateral motion by working in a block or socket which moves
in a curved or straight slot placed at or near the centre of the bogie truck,
and midway or nearly so between the axles. The lateral motion of that end
of the engine, carriage or wagon to which the bogie truck is attached, may

page_text: also be obtained by fixing the centre pin to the bogie truck, instead of to the
engine, carriage, or wagon frame, and providing a slot in the engine, carriage,
I bed the
or wagon frame, for the pin working in the guide block to slide in.
centre pin by preference on a spring, or the spring may be omitted, and hori-
zontal side springs may be provided to assist the engine, carriage, or wagon,
to resume its central position with regard to the bogie truck on leaving curves.
That part of my Invention which supplies a supporting spring to the centre
pin may be applied with great advantage to the centre pin of the bogie trucks
in present use.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Adams in the Great Seal Patent Office on the
11th August 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ADAMS, Locomotive Engineer, of 21, Carlisle Terrace, Bow, Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of February, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Adams, Her special licence that I, the said William
Adams, my executors, administrators, and assigns, or such others as I, the
said William Adams, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ire-
land, the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN BOGIE TRUCKS USED FOR SUPPORTING RAILWAY LOCOMOTIVE ENGINES, CARRIAGES,
& WAGGONS," upon the condition (amongst others) that I, the said William
Adams, my executors or administrators, by an instrument in writing under
my, or their, or one of their bands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said William Adams, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertained in and by the following
statement:-
My Invention of improvements in bogie trucks used for supporting railway
locomotive engines, carriages, & waggons provides means whereby the fixed
or driving axles of the engine, and the axles of the bogie truck, shall assume
directions radial, or nearly so to the curve round which the engine may be
passing, and tbus relieve the engine and bogie frame from lateral strain. In
order to effect this object the centre pin attached to the engine is allowed to
have lateral motion by working in a block or socket, which block or socket
moves in a curved or straight slot placed at or near the centre of the bogie truck,
and midway or nearly so between the axles. The traverse or play of the
sliding block or socket is limited by stop pieces. The lateral motion of that
end of the engine to which the bogie truck is attached may also be obtained
by fixing the centre pin to the bogie truck instead of the engine frame; and
providing a slot in the engine frame for the pin working in the guide block to
slide on.
I bed the centre pin by preference on a spring, or the spring may
be omitted; horizontal springs may be provided to assist the engine to resume
its central position with regard to the bogie truck on leaving curves.
That part of my Invention which supplies a supporting spring to the centre
pin may be applied with great advantage to the centre pin of bogie trucks in
present use.
'To explain the nature of my Invention more clearly, I annex three Sheets of
Drawings in which similar parts are indicated by similar letters.
Figure 1, Sheet No. 1, is a plan of the bogie truck; Figure 2, Sheet No. 2,
is a longitudinal section through A, B, on plan; Figure 3, Sheet No. 3, is a
tranverse section through C, D, on plan.
a, is the bogie frame with its four wheels as usual; across the centre of the
frame from C to D, I place a pair of bearers or girders b. The ends of these
girders are connected by the top and bottom plates c, and are secured as shewn
to the sides of the bogie frame. In the centre space between the girders I
place a rectangular sliding block d provided with a circular hole to receive the
bogie pin e, such block being limited in its play by the stops h. The horizontal
springs mentioned before may be placed between the girders b at the ends
between the frame a and the block d. The bogie pin is attached to the
engine or boiler as usual, a circular cup plate f is placed on the sliding
block as shewn, between which and the flange of the bogie pin is placed a ring
of india-rubber (or other suitable elastic substance) g.
Figures 4, 5, & 6, on Sheets Nos. 1, 2, & 3, shew an arrangement of
the bogie pin without the elastic spring between the sliding block and the

page_text: bogie pin. In this arrangement a ball-and-socket bearing are shewn, but flat
surfaces in contact may be used if preferred; e, is the bogie pin; d, is the
sliding block; and d' is a brass bush in which the bogie pin works.
It will be seen from the above explanations and description that both
circular and lateral motion are obtained between the bogie pin and the bogie
frame.
A similar arrangement of fixed wheels and bogie frame can be applied to
carriages, waggons & trucks, and the arrangements shewn can be varied by
mechanical equivalents.
In witness whereof, I, the said William Adams, have hereunto set my
hand and seal, this Eleventh day of August, in the year of our Lord
One thousand eight hundred and sixty-five.
WILLIAM ADAMS. (L.S.)