Improvements in the Construction of Telephones.
Year: 1889

page_text: Date of Application, 11th Feb., 1899
Complete Specification Left, 6th July, 1889-Accepted, 10th Aug.,
1889
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Telephones.
SAMUEL BENJAMIN WILKINS 1 Parliament Square Edinburgh N.B. in the County
of Mid Lothian Firo Master of the City of Edinburgh do hereby declare the nature of
this invention to be as follows:-
The object of this Invention is to transmit or convey the sound of the voice of a
person when speaking through the transmitter of a telephone, in a louder and more
distinct manner thereby greatly assisting the person receiving the message as also to
cause less possibility of mistakes being made, which have by the ordinary means
provided known frequently to occur. It will also enable the person transmitting the
message to speak in a much lower tone of voice, this would be advantageous especially
when sonding a private message. To carry these Improvements into effect I provide
a portable horn or trumpet which can be easily secured to the existing or any now
telephone, and preferably construct the same of tin platos although it may be made of
other or a combination of any other materials. It is similar in appearance and
shape to a funnel used for pouring liquors into bottles, and being tapered in its con-
struction the smaller or inner end fits close to the disc or sound receiving plato
in the transmitter of the telephone. There is also a plate placed round the neck
on the outside tapered part of this horn or trumpet which entirely covers over the
outer opening made in the door of the box containing the receiving plate or
transmitter. Thus preventing the possibility of any portion of the sound escaping
from the telephone during the transmission of a message. The outer ond of
this horn or trumpet may be made any diameter but preferably about five inches,
and may also have an outer casing placed round the same, in such a manner as
would leave a space between the inner and outer casing when considered advan-
tageous to do so. By adopting this mode of construction a clear passage is provided
direct through the horn or trumpet for conveyance of sound to the receiving plate
or transmitter.
TILS
וד
L1000
COMPLETE SPECIFICATION.
Improvements in the Construction of Telephones.
SAMUEL BENJAMIN WILKINS 1 Parliament Square Edinburgh N.B. in the County
of Mid Lothian Fire Master of the City of Edinburgh do hereby declare the nature
of this invention and in what manner the same is to he performed, to be particularly
described and ascertained in and by the following statement :-
The object of this invention is to transunit or convey the sound of the voice of a
person when speaking through the transmitter of a telephone in a louder and more
distinct manner thereby greatly assisting the person receiving the message. It will
also enable the person transmitting the message to speak in a much lower tone of
voice. To carry these improvements into effect, I provide a portable horn or trumpet
which can be easily secured to the existing or any new telephone, or may make
the same stationary when considered advantageous to do so, or may secure the same
by means of a screw, placed on the tapered or smaller part of the same, and I construct
this horn or trumpet preferably of tin plate, as being the best metal in my opinion for
the conveyance of sound for the object I have in view, although it may be made of
other or a combination of other material. It is similar in appearance to a funnel used

page_text: for pouring liquors into hottles, and being tapered in its construction the smaller or
inner end fits close to the disc or sound receiving plate, in the transmitter of the
telephone. There is also a plate placed round the neck, on the outside tapered part of
this horn or trumpet, which entirely covers over the outer opening, made in the door
of the box containing the plate or transmitter, thus preventing the possibility of any
portion of the sound escaping from the telephone during the transmission of a
message. The outor end of the horn or trumpet may be made any diameter, but
proforably about five inches. By adopting this mode of construction, a very large
and clear passage is provided direct through the horn or trumpet for conveyance
of sound to the plate or transmitter.
And in order that my said Invention may be properly understood, I now proceed
moro particularly to set forth the system mode or manner, in or under which the
same is or may be used, or practically carried into effect, reference being had to
the annexed sheets of drawings and to the letters and figures marked thereon, that is
to say.
Figure (1) shows the Invention in Plan Letter (a a) Horn or trumpet (bb) metal
ring fixed on month of samo (cc) plate with rim for covering over any projecting mouth-
piece of transmitter, such as is used on the Gower Bell or similar telephones (d d d)
hinged brackets to secure horn or trumpet to any projecting mouthpiece on telephone.
Figure (2) shows in elevation the Invention as described for plan figure (1).
Figure (3) shows in plan the plate for covering over projecting mouthpiece of
transmitter on telephone (ccc) plate (d d d) hinged brackets (e e) hook and eye of
elastic band (FF) embracing hinged brackets.
Figure (4) shows the elastic band distended (E E) hook and eye (F) elastic band.
Figure (5) shows in plan an alternative arrangement for embracing hinged
brackets () metallic ring closed by screw and nut (h)
Sheet (2)
Figuro (6) shows in plan the horn or trumpet adaptable to the Blake or any other
telephone, having a recessed or a flat mouthpiece (A A) horn or trumpet (1210)
clastic or metal arms for fixing horn or trumpet to a metallic frame placed round
the transmitter box of telephone (1) metal ring securing arms to horn or
trumpet (KK) plate placed round the neck of outside tapered part of horn or
trumpet, and covering over the outer opening of mouthpiece with cavetto formed
on perimeter to avoid the plato placed round the key-hole of transmitter box.
Figure (7) shows in elevation the horn or trumpet, with its appendages as described
for plan figuro (6).
Figure (8) shows in plan metallic frame placed round transmitter box of tele-
phone (L LL) metal frame (M M M M) brackets or hooks, affixed to frame for
hooking or securing horn or trumpet to transmitter box (N) screw and nut for scouring
metal frame.
Figure (9) shows a sido view of frame as described for plan figure (8).
Having now particularly described and ascertained the nature of my said Invention,
and the system mode or manner, in or under which the same is or may be used or
practically carried into effect and would have it understood that I do not intend to
limit myself to the exact details herein before described and represented in the drawings
annexed so long as the true character of my invention is retained, and in conclusion I
declare that what I claim is
First. The construction of a horn or trumpet made of tin plate, and in shapo liko a
Funnol, having a clear passage direct through the same from the speaker to the
transmitter of the telephone.
Second. I place a plate, flange, or an outer casing which may be made of any
matorial, round the nock of outside tapered part of the horn or trumpet to cover over
the outer opening of mouthpieco of Telephone to prevent the escape of sound whon
speaking through the same.

page_text: Third. The mode of attaching or securing the horn or trumpet to telephones sub-
stantially in the manner and for the purpose hereinbefore described and shown.
Dated this 5th day of July 1889