AN IMPROVED SIGNALLING APPARATUS USED IN HAND SIGNAL LAMPS
Year: 1869

page_text: LETTERS PATENT to Edward Jacob Hill, of Victoria Station, Pimlico,
in the County of Middlesex, and Richard Davis, of 19, Craven
Street, Strand, in the County of Middlesex, for the Invention of
"AN IMPROVED SIGNALLING APPARATUS USED IN HAND SIGNAL LAMPS."
Sealed the 11th February 1870, and dated the 13th August 1869.

page_text: Her Royal Letters Patent for the same, and have made solemn
Declaration that we are the first and true Inventors thereof.
NOW KNOW YE, that we, the said Edward Jacob Hill and Richard
Davis, do hereby declare that the following Complete Specification,
under our hand and seal, fully describes and ascertains the nature of
the said Invention, and in what manner the same is to be performed,
in and by the following statement:-
These improvements relate to the construction of hand lamps in
which movable colored glasses are employed for indicating hand signals
on railways and other places.
The Invention consists in fitting in the hand lamp two discs of
coloured glass, say, green and red; the discs are held in frames centred
upon studs or pins projecting from the faces of a division plate slipped
into the lamp. The discs have short arms or levers attached to them,
to which rods are jointed or pivotted. The rods pass up through the
upper part of the lamp and bear against spring or other bolts fitted on
the outside. These spring bolts are enclosed in vertical boxes, and have
their upper ends shaped to form a loop or finger hold below the ordinary
handle loop or handle. The front of the lamp is fitted with the ordinary
white glass or "bull's-eye" in the cone or spreader.
The Invention will be fully understood by referring to the annexed
Drawings, in which Figure 1 is a front external view; Figure 2 a
vertical section taken just behind the "bull's-eye;" and Figure 3, a
section at right angles to Figure 2.
a, a, is the barrel or body of the lamp; b, the hinged door at the back
thereof; c, c, is the division plate, which is slipped into the grooves
formed by the lips d, d, soldered or otherwise secured to the inside of
the body a, a.
The plate c has an aperture e in its lower portion, so
that no obstruction is offered to the light getting from the lamp proper
and the bull's-eye." On each side of the plate is a stud or pin f, f,
upon which the discs or frames g, h, are mounted, and the short arms
or levers f, k, of the frames have connected to them rods 1,. m, which
pass up through holes in the upper part of the lamp, as shown, the holes
serving as guides for the up-and-down movings of the rods. Outside
the lamp are two boxes n, o, for containing the springs which encircle
the rods of two bolts p, q, the upper ends p¹, q', of these bolts are hook-
shaped, and when it is necessary to shew a green or "caution"
"
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page_text: signal, or a "red" or "danger" signal, one of the hooks is lifted by the
forefinger or the little finger of the person using the lamp, so as to
remove the spring pressure from the upper end of the rod, when the
weight of the disc will cause the frame to move on its pin or stud, and
allow the " green or the "red" disc to come between the light and
the "bull's-eye," and thus shew a green or a red light. We make
holes in the rods of the spring bolts for receiving a pin r or s, for the
purpose of holding or fixing either the green or the red disc in front
of the light.
In Figure 2 we have shewn one of the discs, say the "red" one, in
action; in this view the forefinger of the person is shewn as having
lifted the spring bolt, and the weight of the disc has caused it to fall in
front of the light, whereby a "red" or danger signal is exhibited.
And having now described the nature of our said Invention, and in
what manner the same is to be performed, we declare that we claim,-
First. The mode of actuating coloured glasses in hand signal lamps,
in the manner herein-before described and represented in the Drawings.
And, secondly. The apparatus substantially as herein-before described
and represented in the Drawings.
In witness whereof, we, the said Edward Jacob Hill and Richard
Davis, have hereunto set our hand and seal, this Thirtieth day
of June, One thousand eight hundred and sixty-nine.
EDWARD JACOB HILL. (L.S.)
RICHARD DAVIS.
(L.S.)