Year: 1887

page_text: Date of Application, 12th May, 1887.
Specification Accepted, 14th June, 1887.
I CHARLES LIONEL WINGFIELD FITZGERALD of 109 Farringdon Road in the City
of London Chairman of the Consolidated Telephone Construction and Maintenance
Company Limited 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 :-
My Invention has for its object to provide a combination of transmitter signalling
devices and receiving arrangements in one compact convenient and simple apparatus.
According to my Invention the transmitter is supported in a horizontal or vertical
but preferably in an inclined position upon brackets or supports extending from a
base of wood ebonite or other suitable material which carries also the bell and push
piece or equivalent signalling and calling devices the bell or the like being situated
under or behind the transmitter and between the brackets or supports thereof.
The switch hook for the receiver by which switch the change is made from the
circuit for the bell or the like to that of the telephones, is passed through the base and
is situated preferably under the bell or the like and transmitter. The base is pre-
ferably circular and forms a box within which are contained the various contacts and
devices usual in telephones but arranged so as to fit into the said box the terminals
for the circuits being fixed to the said box or hollow base. For long lines an induction
coil may be used which is then placed in the said box or hollow base.
The brackets upon which the transmitter is supported may carry the conducting
wires to the transmitter or they may themselves form the conductors.
Figure 1 of the accompanying drawing represents in front elevation a telephonic
apparatus constructed according to my Invention. Figure 2 is a side view and
Figure 3 a back elevation of the same.
A is the base of the apparatus which may be made of wood vulcanite or other
suitable material and provided with lugs B or the like by means of which the apparatus
may be fixed or attached to a wall or other convenient support.
This base is made hollow or is recessed at the back as shewn so as to constitute a
box or enclosed space in which the usual contacts and connection for directing the
currents are fitted and which may also contain the induction coil C when the apparatus
is employed in connection with long lines.

page_text: D is the transmitter which is carried on brackets E attached to the face of the
base A between which brackets and behind the transmitter is fixed the bell F or
other suitable annunciator. A slot G is made through the face of the base A
through which passes the switch hook H for the receiver which when placed on the
said hook establishes a circuit through the bell F or the like, the current passing
through the telephone when the receiver is removed from the hook as is usual. In
the face of the base A is also fitted the push piece or contact maker I for transmitting
a current to sound a bell or otherwise signal or call up the distant station.
The brackets E carrying the transmitter may constitute conductors of the current
to the said transmitter the wires being attached to the said brackets at K.
I have not considered it necessary to describe the connections and directions of the
currents as they form in themselves no part of my Invention and will be clearly
understood by reference to the drawings.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is :-
:-
The general combination and. arrangement of parts constituting the improved
telephonic apparatus herein before described and illustrated by the accompanying
drawing.
Dated this 12th day of may 1001.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.