Reflector Mounting or Holder for Electric Incandescent Lamps.
Year: 1897

page_text: Date of Application, 14th July, 1897
Complete Specification Left, 15th Mar., 1898-Accepted, 23rd Apr., 1898
PROVISIONAL SPECIFICATION.
Reflector Mounting or Holder for Electric Incandescent Lamps.
We, JOSEF JERGLE, of 76, Mariahilferstrasse, Vienna, Electrician, and CARL
WOLFFIARDT, trading as the Glasfabrik Marienhutte. Carl Wolfhardt, of 88A,
Mariahilferstrasse,. Vienna, do hereby declare the nature of this invention, to be
as follows:-
This invention relates to a holder or mounting for hollow glass mirror reflectors
of incandescent electric lamps and has for object to enable the use of cement and
its attendant disadvantages to be entirely avoided and the parts to be easily mounted
and dismounted.
The improved mounting or holder comprises two parts applied inside and outside
of the reflector and united by an axial screw passing through plugs of insulating
material whereby a close moisture tight joint is effected without the use of any
cement as illustrated in central vertical section in the accompanying drawings,
wherein a is the hollow glass reflector, whereof the flange of the central aperture
opens through the surrounding flange a¹. b, c, are the internal and external parts
of the mounting, whereof the part 6 is inserted in the central aperture of the re-
flector and forms the socket to receive the lamp, whilst the outer part or cap c
encloses the flange a¹ externally, the two parts being securely united by a screw d
and nut the screw passing axially through an insulating plug 61 at the bottom
of the socket b and through a plug c¹ of insulating material to which the outer
member c of the holder is attached, so that by unscrewing the nut the parts can be
at once dismounted.
The one leading-in wire of the lamp is connected to the screw and the other to
the socket 6 forming the inner member of the mounting or holder upon which metal
tongues frivetted or soldered to the outer member c of the holder, are caused to
bear by the pressure of the screw, the screw and outer part c of the holder being
connected with the respective members of the external circuit.
1
14th Jon of Tales 1907
Reflector Mounting or Holder for Electric Incandescent Lamps.
We, JOSEF JERGLE, of 76, Mariahilferstrasse, Vienna, Electrician, and CARL
WOLFFHARDT, trading as the Glasfabrik Marienhutte Carl Wolffhardt, of 88A,
Mariahilferstrasse, Vienna, do hereby declare the nature of this invention and in
Price 8d 1

page_text: what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to a holder or mounting for mirror reflectors of hollow
glassware for incandescent electric lamps and the invention has for object to en-
tirely avoid the use of cement and so get rid of its attendant disadvantages, viz.:
the penetration of moisture which tarnishes the mirror, and the liability of the
mirror to crack owing to differences of expansion with heat, and to enable the
parts to be easily mounted and dismounted.
The improved mounting or holder comprises two parts applied at front and back
of the reffector and united by an axial screw passing through plugs of insulating
material whereby a close moisture-tight joint is effected without the use of any
cement.
This improved mounting or holder is illustrated in central vertical section in
the drawings accompanying our Provisional Specification wherein a is the hollow
glassware reflector whereof the flange a¹ of the central aperture of the front portion
of the reflector opens through the surrounding flange a² of the back portion of the
reflector. b, c, are the internal front and external back portions of the mounting
whereof the part 6 is inserted in the central aperture a¹ of the reflector and forms
the socket to receive the collar of the lamp, whilst the outer or back part is a cap
enclosing the flange a externally, the two parts being securely united by a screw d
and nut, the screw passing axially through an insulating plug at the bottom
of the socket and through a plug c of insulating material to which the outer or
rear member c of the holder is attached so that by unscrewing the nut the parts
can be at once dismounted.
The one leading-in wire of the lamp is connected to the screw d and the other to
the socket upon the end of which metal tongues f rivetted or soldered to the outer
member of the holder are caused to bear when the screw is tightened up, the
screw and outer part c of the holder being respectively connected with the main leads
of the circuit.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
•
The herein described mounting for mirror-reflectors of hollow glassware, con-
sisting of two conductive metallic parts 6 and e the one forming the lamp socket
fitting into the central aperture of the front part of the reflector and the other
embracing the flange a¹ of the back part of the reflector and the two parts of the
mounting being mechanically connected by a screw passing through insulating
blocks, and electrically connected as by contact springs f substantially as and for
the purpose specified.
Dated this 14th day of March 1900
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.