Improvements in or connected with Electric Push Buttons.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Electric Push Buttons.
I, GUSTAVE MARKT, of the Firm Markt Brothers and Co., 38, Beech Street,
Barbican, London, Merchant, do hereby declare the nature of this invention to
be as follows: _
This invention has for object the construction of electric push buttons or
pushes somewhat of the construction of electric tumbler switches in appearance,
i.e. a base, a bridge on to a ring of which a fluted cover can be screwed to enclose
the operative part except the button head which projects through the bridge
ring as a guide said button head being loose fitted for in and out or up and down
movement limited by a shoulder due to the pressure of a raised coiled and springy
portion of one of the contact plates the other contact plate being flat and ter-
minating in a stop directly under the push button for completing the circuit
when in contact.
.
P
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said G. Markt.
I, GUSTAVE MARKT, of the Firm Markt Brothers and Co., 38, Beech Street,
Barbican, London, Merchant, 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 improvements in or connected with electric push
buttons.
For the purpose, I construct electric push buttons or pushes somewhat like
the well known electric tumbler switches in appearance, and as represented in
the annexed drawings, Figure 1 part section, Figure 2 plan of base and spring
contact, Figure 3 plan of base and bridge.
A, base. B, bridge on to a ring C of which a fluted or a plain dome shaped
cover D can be screwed to enclose the operative parts except the button head E
which projects through and guided by the bridge ring C, said button head E
being loosely fitted for in and out, or up and down movement limited by a
shoulder F due to the pressure of a spiral volute or raised coiled and spring
portion G of one of the contact plates H, the other contact plate I being flat and
D977

page_text: terminating in a top or post directly under the push button E for completing
the circuit when in contact.
The circuit wires J, K, are passed up through holes L, M, and under the
contact plates H, I, respectively which fixes them by the screw fasteners N, P.
Q, Q, are the holes in which the screws of the bridge B engage, and R, R, are
the holes by which the base A can be secured by screws to any article of furni-
ture, or to a wall when fitted up in connection with an electric call bell.
The push button may be of potteryware, ebonite, or other like material or of
metal, in which case I insulate, as at S Figure 1.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:-
-
1. The construction of electric push button apparatus in the form for action
as shown by the annexed drawings.
2. The combination of base A, bridge B, ring shaped centre thereof C, spiral
volute or raised coiled spring G forming one of the contact plates H and con-
nected to the push button E, as indicated for the purpose set forth.
The 25th day of July 1899.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Gustave Markt.