An Electric Indicator for Use in Colliery Engine Houses and Railway Signal Cabins.
Year: 1893

page_text: Date of Application, 13th Oct., 1893
Complete Specification Left, 12th July, 1894-Accepted, 6th Oct., 1894
PROVISIONAL SPECIFICATION.
An Electric Indicator for Use in Colliery Engine Houses and
Railway Signal Cabins.
CHARLES BROOKE CRAWSHAW, Colliery Owner, Rufford Lodge, Oxford Road,
Dewsbury, and JAMES BATTYE, Engineer, Leeds Road, near Dewsbury, do hereby
declare the nature of this invention to be as follows :-
This electric indicator is an arrangement shewing the number of signals given,
& particularly adapted for use in colliery engine houses and railway signal cabins.
Its working is as follows:-
A signal is given from any point by touching a small press-button or plunger
which is connected to a magnet by an electric-wire; this moves an armature
striking a bell or gong, which is supported by a pillar, and also moving a connecting
rod which may be fixed either to the top or the bottom of the armature. The rod
being thus moved causes a catch to draw backwards one tooth of a ratchett wheel.
This ratchett wheel being attached to a spindle, which is fitted into a hole bored
through the gong-pillar, turns an indicating-hand from zero "0" to fig. "1" on a
dial, & each time the signal is given by pressing the before-mentioned press-
button, the above process is repeated, so that it will not be found necessary to rely
upon the ear for the number of signals given as at present, but the indicator
with the above mechanism will register any number of signals accurately, and
obviate any danger of mistakes.
On the full signal being received the ratchett-wheel can be set at liberty by
means of an electric or mechanical arrangement operated by the person in charge of
the engine-house or signal-cabin, as the case may be, and the indicating-hand will
immediately return to zero.
The whole of the parts are enclosed in a case on the front of which is a dial.
J
C
11000
COMPLETE SPECIFICATION.
An Electric Indicator for Use in Colliery Engine Houses and
Railway Signal Cabins.
CHARLES BROOKE CRAWSHAW, Colliery Owner, Rufford Lodge, Oxford Road,
Dewsbury, and JAMES BATTYE, Engineer, Leeds Road, near Dewsbury, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
This electric indicator is an arrangement shewing the number of signals given,
& particularly adapted for use in colliery engine houses and railway signal cabins.
Its working is as follows:-
A signal is given from any point by touching a small press button or plunger
which is connected to a magnet "A" Fig. 1 and 2 by an electric-wire; this moves
an armature "B" Fig. 1 and 2 striking a bell or gong "F" Fig. 2 which is
supported by a pillar "J" Fig. 1 & also moving a connecting-rod "C" Fig. 2
which may be fixed either to the top or the bottom of the armature "B"
Fig. 1 and 2. The rod "C" being thus moved causes a catch "D" Fig. 2 to draw

page_text: 66
backwards one tooth of a ratchett or click-wheel "E" Figs. 1 and 2 & to prevent
it from moving more than one tooth of the ratchett-wheel "E" Figs. 1 and 2 at
one time. there are check-actions "K" & "O" Fig. 2 worked by a second ratchett
wheel "L" Figs. 1 & 2. The check-actions "K" and "O," Fig. 2, work into
the teeth of the ratchett-wheels "E" and "L," Figs. 1 and 2; K," Fig. 2,
falling into or between the teeth of the ratchett-wheel "E," Figs. 1 and 2; and "O,"
Fig. 2, between the teeth of the ratchett-wheel "L," Figs. 1 and 2, and in this way
preventing the ratchett-wheels "E" and "L," Figs. 1 and 2, moving either
backwards or forwards (excepting when recording signals given) unless released by
the person in charge.
The ratchett-wheel "E," Figs. 1 and 2, being attached to a spindle "I," Fig. 1,
which is fitted into a hole bored through the gong pillar "J," Fig. 1, turns an
indicating-hand "C," Fig. 3, from zero "0" to figure "1" on the dial "H," Fig. 3,
and each time the signal is given by pressing the before-mentioned press-button,
the above process is repeated, so that it will not be found necessary to rely upon
the ear for the number of signals given, as at present, but the indicator, with the
above mechanism, will register any number of signals accurately and obviate any
danger of mistakes.
On the full signal being received the ratchett wheels "E" and "L," Figs. 1 and 2,
can be set at liberty by means of an electric or mechanical arrangement, as desired,
operated by the person in charge of the engine-house, or signal-cabin, as the case
may be, and the indicating-hand "G," Fig. 3, will immediately return to zero.
This may be done by pulling the string, cord or chain "M," Fig. 2, at the end of
the check-action " O," Fig. 2, which lifts up the catch" D," Fig. 2, and the
cheek-actions "K" and "O," Fig. 2, and the weight "N," Fig. 2, pulls back the
ratchett-wheels "E" and "L," Figs. 1 and 2, and thus brings back the indicating-
hand "G," Fig. 3, to zero.
The whole of the parts are enclosed in a case, Figs. 3 and 4, on the front of
which is a dial "H," Fig. 3.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
(1) The ratchett-wheel "E," Figs. 1, and 2, being worked directly from the
armature "B," Figs. 1 and 2, and the same action causing the hammer to strike
the gong "F," Fig. 2.
. (2) The indicator-spindle "I," Fig. 1, (to which are attacked the hands or
pointers in front of the dial "H," Fig. 3) passing through the centre of the gong-
pillar J," Fig. 1, and the centre of the dial "H," Fig. 3, fitting on to the bell-
pillar "J," Fig. 1.
(3) The back ratchett-wheel "L," Figs. 1 and 2, and catch or check-actions "K"
and O," Fig. 2, which prevent the indicator registering above one signal at a time,
and from slipping backwards after each signal, unless released.
Dated this Eleventh day of July 1894.
C. B. CRAWSHAW.
JAMES BATTYE.