IMPROVEMENTS IN TELEPHONES AND IN LIGHTNING ARRESTERS THEREFOR, OR FOR OTHER PURPOSES."
Year: 1881

page_text: LETTERS PATENT to Gay Wilson Foster, of 67, Strand, in the City of
Westminster, for an Invention of "IMPROVEMENTS IN TELEPHONES AND IN
LIGHTNING ARRESTERS THEREFOR, OR FOR OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said Gay Wilson Foster at the
Office of the Commissioners of Patents on the 9th December 1881.
" IMPROVE
GAY WILSON FOSTER, of 67, Strand, in the City of Westminster.
MENTS IN TELEPHONES AND IN LIGHTNING ARRESTERS THEREFOR, OR FOR OTHER
PURPOSES."
This Invention consists of a telephone handle or case furnished with an exterior
groove or recess for the reception of a helix or coil, also with a hole for the
reception of a magnet and two lioles bored at an angle for the reception of telephone
cords.
Also of a permanent magnet fashioned with a screw cut head and a fixed
metallic screw cut adjustment collar, whereby said magnet can be fixed and
adjusted to its proper position with reference to the diaphragm of a telephone.
Also of a combined lightening arrester and binding post device, consisting of
two or more metallic pieces arranged in a ring shape provided with threaded
connections for holding the contact points of telephone cords, and suitably
connected with the ends of the telephone or other helix, said metallic pieces being
fashioned with teeth or corrugations on their surfaces and placed near to one
another.
Also of a telephone constructed of two metallic plates, each fashioned with a
contact shoulder for receiving a diaphragm, and placed shoulder to shoulder for
holding the diaphragm and forming an air chamber, said diaphragm being insulated
from either or both of the plates, and said plates being provided with hinges and
made to form a door or cover to a receptacle for holding an induction coil or other
matters.

page_text: The plates being used as conductors of electricity and to complete the primary
circuit of the telephone.
Also of a telephone transmitter consisting of a spiral spring fastened to a
diaphragm at one end and a pin at the other, in combination with a suitable
electrodo held in a cap supported by a pressure spring, said spring being attachod
to an insulator by a screw at one end and to the cap at the other by a screw
nut, together with a screw for governing the pressure of the electrode against
the pin.
Lastly, of the insulator for insulating the primary conducting wire from the
inner metallic plate.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Gay Wilson Foster in the Great Seal Patent Office on the
6th June 1882.
"
IMPROVE
GAY WILSON FOSTER, of 67, Strand, in the City of Westminster.
MENTS IN TELEPHONES AND IN LIGHTENING ARRESTERS THEREFOR, OR FOR OTHER
PURPOSES."
This Invention consists of a telephone handle or case furnished with an exterior
groove or recess for the reception of a helix or coil, also with a hole for the
reception of a magnet, and two holes bored at an angle for the reception of
telephone cords.
Also of a permanent magnet fashioned with a screw-cut head and a fixed metallic
screw-cut adjustment collar, whereby said magnet can be fixed and adjusted to its
proper position with reference to the diaphragm of a telephone.
Also of a combined lightening arrester and binding post device, consisting of
two or more metallic pieces arranged in a ring shape, provided with threaded
connections for holding the contact points of telephone cords, and suitably
connected with the ends of the telephone or other helix, said metallic pieces being
fashioned with teeth or corrugations on their surfaces and placed near to one
another.
Also of a telephone constructed of two metallic plates, cach fashioned with a
contact shoulder for receiving a diaphragm, and placed shoulder to shoulder for
holding the diaphragin and forming an air chamber, said diaphragin being insulated
from either or both of the plates, and said plates being provided with hinges and
made to form a door or cover to a receptacle for holding an induction coil or other
matters, the plates being used as conductors of electricity and to complete the
primary circuit of the telephone.
Also of a telephone transmitter consisting of a spiral-spring fastened to a
diaphragm at one end and a pin at the other, in coinbination with a suitable electrodo
held in a cap supported by a pressure spring, said spring being attached to an
insulator by a screw at one end and to the cap at the other by a screw nut,
together with a screw for governing the pressure of the electrode against the pin.
Lastly, of the insulator for insulating the primary conducting wire from tho
inner metallic plate.
The annexed Drawing will serve to show how this Invention may be best
carried into effect. Fig. 1 is a longitudinal section of a telephone receiver; Fig. 2.
detail of collar; Fig. 3, longitudinal section of receiver fitted with improved
lightening arrester; Fig. 4, magnet; Fig. 4", cross section along the line a-b on
Fig. 1; Fig. 5, perspective view of lightening arrester; Fig. 6, sectional elevation
of transmitter; Fig. 7, front view; and Fig. 8, back view of same. In all the
Figures like letters indicate like parts. A is a permanent improved screw headed
magnet; B, telephone handle; C, are two holes for receiving the conducting
cord C', as shown; D, a space or recess for holding an insulated coil or helix D₁,
as shown; E, an improved screw-threaded collar for receiving the screwed head of
the magnet and allowing of its adjustment; F, an improved combined lightening
arrester and binding post; G, are binding screws; H, attachment screws; K is the
mouth or ear receptacle; L, the diaphragm; M, a vibrating spring; N, a metallic
pin; O, an adjustment screw; 0, insulator; P, a vibrating spring; R, the
primary conducting wire; S, the battery conducting wire; T, electrode; V,
metallic cap; X, nut to cap; Y, metallic plate; Y₁, metallic face; Z, case for
holding induction coil.

page_text: CLAIMS.
1. A telephone handle or case furnished with an exterior groove or recess for
the reception of a helix or coil, also with a hole for the reception of a magnet, and
two holes bored at an angle for the reception of telephone cords, substantially as
illustrated.
2. A permanent magnet fashioned with a screw-cut head and a fixed metallic
screw-cut adjustment collar, whereby said magnet can be fixed and adjusted to its
proper position with reference to the diaphragm of a telephone, substantially as
illustrated.
3. A combined lightening arrester and binding post device, consisting of two or
more metallic pieces arranged in a ring shape, provided with threaded connections
for holding the contact points of telephone cords and suitably connected with the
ends of the telephone or other helix, said metallic pieces being fashioned with teeth
or corrugations on their surfaces, and placed near to one another, substantially as
illustrated.
4. A telephone constructed of two metallic plates, each fashioned with a contact
shoulder. for receiving a diaphragm and placed shoulder to shoulder for holding the
diaphragm and forming an air chamber, said diaphragm being insulated from either
or both of the plates, and said plates being provided with hinges and made to
form a door or cover to a receptacle for holding an induction coil or other matters.
The plates being used as conductors of electricity and to complete the primary
circuit of the telephone, substantially as illustrated.
5. A telephone transmitter consisting of a spiral spring fastened to a diaphragm
at one end and a pin at the other, in combination with a suitable electrode held
in a cap supported by a pressure spring, said spring being attached to an
insulator by a screw at one end, and to the cap at tho other by a screw nut
together with a screw for governing the pressure of the electrode against the pin,
substantially as illustrated."
6. The insulator for insulating the primary conducting wire from the inner
metallic plate, substantially as illustrated.
In witness whereof, I, the said Gay Wilson Foster, have hereunto set my
hand and seal, this 2d day of June, A.D. 1882.
CLAY WILSON WOSTED