Improvements in and connected with Electric Telephonic Apparatus.
Year: 1891

page_text: Date of Application, 30th Oct., 1891
Complete Specification Left, 30th July, 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in and connected with Electric Telephonic Apparatus.
We, ALEXANDER MARR of 9 Repton Street Chorlton on Medlock Manchester
in the County of Lancaster, Electrical Engineer, and ARTHUR THOMAS COLLIER
of "Netria" St. Albans in the County of Hertford, Gentleman, do hereby declare
the nature of this invention to be as follows:-
This invention relates to electric telephonic apparatus and its principal object
is to allow a more powerful magnet to be employed than those which are at present
in common use in telephonic receiving instruments.
In carrying out our improvements we make the magnet of the telephone much
larger and heavier than usual and arrange it in connection with the apparatus in
such a manner that it can be drawn moved or swung into a convenient position
relatively to the ear of the person using it whilst still being supported by the board
box casing or apparatus with which it is connected. By this means the person
using the telephone is relieved from the task of holding the instrument to his ear
and may have both hands at liberty. It may however be arranged that the user
of the instrument should hold the telephone to his ear (but without supporting its
weight) and that after use the instrument should be withdrawn from the position
of use by a spring, a weight, or by gravity, on being released by the hand.
The motion of the telephone into and out of the hearing position inay be utilised
to operate the switch in a similar manner to the present arrangement, where the
removal of the instrument from a hook and the replacing of the instrument, operates
the switch controlling the ringing and speaking circuits.
The permanent magnet of the telephone is preferred to be of the horse-shoe type,
and it is also preferred to arrange a fixed keeper in contact with it whilst in the
closed position, so that when out of use the magnetic circuit is closed.
Dated this 20th tax of October & D 1801
WILLIAM E. HEYS,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and connected with Electric Telephonic Apparatus.
We, ALEXANDER MARR, of 9 Repton Street, Chorlton-on-Medlock, Manchester,
in the County of Lancaster, Electrical Engineer, and ARTHUR THOMAS COLLIER,
of "Netria," St. Alban's, in the County of Hertford, Gentleman, 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 invention relates to electric telephonic apparatus, and its principal
object is to allow a more powerful magnet to be conveniently employed than the
magnets which are at present commonly used in the construction of telephonic
receiving instruments.
In carrying out our improvements we make the magnet of the telephonic
receiver much larger and heavier than usual and arrange it in connection with the
apparatus in such a manner that it can be drawn moved or swung into a convenient
position relatively to the ear of the person using it, whilst still being supported by
the board box casing or apparatus with which it is connected. By this means,
the person using the instrument may be relieved from the task of holding the
receiver to the ear, and may have both hands at liberty. It may however, and

page_text: is preferred to be arranged that the user should hold the receiver to his ear (but
without supporting the whole of its weight) and that after use the instrument
should be withdrawn from that position by a spring, by a weight, or by gravity, on
being released by the hand.
The motion of the receiver into and out of the hearing position may be utilised
to operate the switch in a similar manner to the present arrangement, wherein the
removal of the receiver from a hook, and the replacing of it, operates the switch
controlling the ringing and speaking circuits.
The accompanying drawings to which reference is hereinafter made, illustrate
how we may carry our invention into effect.
The types of instrument which have been selected for illustration are the ordinary
"Blake Transmitter" T, and a "Collier Receiver" R, the magnet M of the latter
instrument being about three times the length of the ordinary magnet.
Figure 1 is a front elevation, and Figure 2 is a side view, with the receiver shewn
in the hearing position in dotted lines.
As represented, the magnet M is secured to a short arm A, which is connected
by the universal joint H, to the base board on which the instruments are mounted.
It is found in practice advisable to hold the instrument to the ear by hand, as this
avoids the necessity for using springs or counterweights, and enables the instrument
to be used indifferently by persons of various heights It is also found to be
preferable to use a universal joint such as H, as this enables the listener to move
without putting any strain on the instrument or removing his car therefrom. The
length of the arm A should be such that the mouth will be about four inches (or
such other distance as may be best) from the transmitter, and it may if desired, be
made adjustable. When the receiver is out of use, it rests against the switch S,
which it thus displaces and puts the bell B into circuit with the line. On the
removal of the receiver, the switch is forced open by a spring, cutting out the
ringing circuit and putting in the speaking circuit. The switch and its arrange-
ments may be constructed in all respects in the same manner as existing switches
for the like purposes, with the single exception that as it has to be displaced in a
horizontal instead of in a vertical plane, the contacts are arranged at right angles
to the positions of the present contacts as will be obvious.
Instead of arranging the receiver to be swung upwards for use, it may be arranged
to be swung downwards or horizontally, or it may be arranged upon a bar or
bracket upon which it may slide or which itself may be swung into and out of the
hearing position, we prefer however the arrangement which we have illustrated and
described as being the most useful and convenient in practice.
The electrical connections with the receiver may be made in the usual manner
through conductors contained within flexible cords.
The ringing up, and ringing off presses U and O may be of the usual or any
suitable construction.
A stop of indiarubber or a spring buffer may be arranged at C to prevent injury
should the receiver be dropped from the hand.
It will be understood that we do not limit our invention to the type of receiver
herein before described, and that it is equally applicable to all of the types in use
in which bar or horse-shoe magnets are employed.
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. An electric telephonic receiver having a comparatively large or heavy magnet,
constructed and arranged in such a manner that it may be drawn moved or swung
into and out of the hearing position, substantially as and for the purpose herein-
before described and as illustrated by the accompanying drawings.
2. The combination and arrangement in electric telephonic apparatus, with a
receiver having a large or heavy magnet and being movably connected with the

page_text: apparatus, of a switch operating the ringing and speaking circuits and actuated by
the movement of the receiver, substantially as and for the purpose hereinbefore
described and as illustrated by the accompanying drawings.
Dated this 29th day of July A.D. 1892.
WILLIAM E. HEYS,
Agent for the Applicants.