Improvements in Sockets or Holders for Incandescent Electric Lamps.
Year: 1898

page_text: Date of Application, 4th Apr., 1898
:
Complete Specification Left, 17th Dec., 1898-Accepted, 25th Mar., 1899
[Communicated from abroad by ALLGEMEINE ELEKTRICITATS-GESELLSCHAFt, of 22,
Schiffauerdamm, Berlin, Germany.]
Improvements in Sockets or Holders for Incandescent Electric Lamps.
I, JOHN WILLIAM MACKENZIE, of the Firm of Wheatley and Mackenzie,
Engineers and Patent Agents, of 40, Chancery Lane, London, W.C., do hereby
declare the nature of this invention to be as follows;
The object of the present invention is a holder for incandescent lamps, in
which the casings for receiving the contact are formed peculiarly.
In the accompanying drawing Figs. 1 to 3 illustrate part of the holder in plan,
cross-section and side-view, Figs. 4 to 6 illustrating the contact casing in section,
end elevation and inside .view.
The
The casings are fixed in the stone or porcelain a by means of screws c.
bore d in the casing b serves to receive the piston e and the piston spring f. In
order to prevent the piston e from springing out of the bored the upper ridge y
of the said bore pressed inwards so that the striking surface of the piston lies
against the underside of the ring-shaped ridge y. In mounting the parts the
spring and piston a are set in the bore d and the ridge y on the upper side of the
casing is bent inwards.
1
2
1 1000
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.Ü.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Sockets or Holders for Incandescent Electric Lamps.
I, JOHN WILLIAM MACKENZIE, of the Firm of Wheatley and Mackenzie,
Engineers and Patent Agents, of 40, Chancery Lane, London, W.C., do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following state-
ment:
The object of the present invention is to provide a holder for incandescent
lamps, in which the casings for receiving the contacts are formed peculiarly.
Referring to the drawings filed with the Provisional Specification:-
Figs. 1 to 3 illustrate part of the holder in plan, cross-section, and side view,

page_text: Figs. 4 to 6 illustrating the contact casing in section, end elevation and in side
view.
The casings bare fixed in the stone or porcelain a by means of screws c. The
bored of the additional piece formed integral with the casing 6 serves to receive
the piston and the piston spring f. In order to prevent the piston e from
springing out of the bore d the upper ridge g of the said bore is pressed inwards
so that the striking surface of the piston lies against the underside of the ring-
shaped ridge g. In mounting the parts the spring f and piston d are set in the
bored and the ridge g on the upper side of the casing is bent inwards.
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: :―
1. Piston contact spring holder for incandescent lamps, the distinguishing
feature of which is that the piston casing carries a hollow additional piece
forming with it a complete whole for the réception of the spring piston e f which
is protected against falling out by means of a ridge y which is pressed inwards.
2. The improved construction of sockets or holders for incandescent electric
lamps, substantially as described with reference to the drawings.
1
10
1
T
1000
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C.,
Agents.