IMPROVEMENTS IN APPARATUS FOR SIGNALLING. ON RAILWAY TRAINS, AND FOR EFFECTING COMMUNICATION BETWEEN PARTS OF SUCH. TRAINS
Year: 1865

page_text: PROVISIONAL SPECIFICATION left by Henry Martin at the Office of
the Commissioners of Patents, with his Petition, on the 1st June
1865.
I, HENRY MARTIN, of 80, Conduit Street, Leicester, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN APPARATUS FOR SIGNALLING.
ON RAILWAY TRAINS, AND FOR EFFECTING COMMUNICATION BETWEEN PARTS OF SUCH.
TRAINS," to be as follows:-
The object of the improvements is to enable passengers by railway train's to
attract the attention of the guard or others who may have charge of such
trains, and also otherwise to effect communication between parts of trains..
Sliding bars or rods are applied to the compartments of a train of carriages,.
and they are connected together in pairs, so as to be simultaneously moved in
opposite directions, in order that signals carried by them may be exposed to.
view or withdrawn therefrom at each side of the carriage. These rods or
bars are retained in position to withold the signals from view by a stop, whilst
the tendency of them is to be brought into view by the action of spring or
other pressure when they are released from such stop. The releasing is
effected by a stud or tappet from an axle acted upon by a lever handle or
winch in position to be worked by a passenger. Each of these axles also
carries a pulley or drum with strap or other suitable connection adapted to
draw upon a line or other communicator between the guard's van and the
engine or other of the parts of the train, and thereby act on bells or other signal
apparatus to draw the attention of those in charge of the train. I also apply.

page_text: 1.
indicating apparatus in the compartments appropriated to those in charge of
a train to indicate in such compartments the particular part of a train where
attention is required. This is effected by regulating the extent of motion
capable of being given to the axles to be worked by the passengers. For this
purpose an adjustable stop is applied in position to act upon and stop the
motion of the handles applied to the axles worked by the passengers, and
these stops in different parts of the train are capable of being set in different
relative positions, which may be indicated and adjusted by fingers and dials
on the carriages. In use the extent of motion of an axle in any compartment
of a train, by effecting through the continuous line or communicator a cor-
responding motion of other axles or leverage dials and indicators in the
compartments appropriated to those in charge of the train, will indicate in
those parts where the assistance is needed. Each handle of the axles worked
by the passengers is provided with a sliding projection acted upon by an
eccentric or snail race, so that when such handle is in a position of rest the
adjustable stop may freely pass it. The indicating apparatus are held to
points of rest when released by balance weights or spring pressure. Wheels
and pinions, or levers, springs, or weights are employed to take up 'the slack
and preserve uniform tension between parts of the continuous line or con-
Simultaneous action may in a similar manner be effected between
the guard and engine driver or others in charge of the train...
"