Improvements in Forming Metallic Connections with Incandescent Electric Lamps and Holders therefor.
Year: 1888

page_text: Date of Application, 27th Jan., 1888
Complete Specification Left, 27th Oct., 1888
Complete Specification Accepted, 21st Dec., 1888
Improvements in Forming Metallic Connections with Incandescent
Electric Lamps and Holders therefor.
We, JOHN SPINK, of Market Street, Bradford, in the County of York, Wine
Merchant, and CHARLES GAUZENTES, of the same place, Electrical Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention has for its object the construction of holders suitable for carrying
incandescent lamps arranged so that the platinum links, terminals, or extremities are
protected, and not so liable to be broken as hitherto; and to effect a more perfect,
durable, and yet adjustable metallic connection between the lamp carrying links or
terminals and the holder; and to arrange the latter so as to be capable of carrying
a reflector.
The invention consists in attaching a wire or stem to each platinum link, and
securing the same in position by enclosing and protecting them for son.e distance
from the lamp by a collar, and filling the space with suitable insulating cement; the
contact with the holder being effected by the stems projecting from the lamp and
inserting them into the centre of spiral wire springs connected to the two lamp holder
terminals, and inserted in boles formed in the holder, to which are also secured arms
for carrying a reflector, the latter being secured or held in position by movable arms
placed above the reflector.
Dated this 26th day of January 1888
JOHN WAUGH,
Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Forming Metallic Connections with Incandescent
Electric Lamps and Holders therefor.
We, JOHN SPINK, of Market Street, Bradford, in the County of York, Wine
Merchant, and CHARLES GAUZENTES, of the same place, Electrical Engineer, 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 has for its object the construction of holders suitable for carrying
incandescent lamps arranged so that the platinum links, terminals, or extremities aro
protected, and not so liable to be broken as hitherto and to effect a more perfect,
durable, and yet adjustable metallic connection between the lamp carrying links or
terminals and the holder; and to arrange the latter so as to be capable of carrying
a reflector.
The invention consists in attaching a wire or stem to each link, and securing the
same in position by enclosing and protecting them for some distance from the lamp
by a collar, and filling the space with suitable insulating cement; the contact with the
holder being effected by the stems projecting from the lamp and inserted into the
centre of spiral wire springs connected to the two lamp holder terminals, and inserted
in holes formed in the holder, to which are also secured arms for carrying a reflector
the latter being secured or held in position by movable arms placed above the
reflector.
In order that our invention may be more fully understood, we will further describe
the same by making reference to the accompanying sheet of drawings in which
Fig. 1. represents a view of our improved holder carrying an incandescent lamp.
Fig. 2. a section through the same.
Fig. 3. a plan, and
Fig. 4. a view shewing the reflector placed on the lamp holder.
To the two platinum links or terminals A. and A¹ of the lamp C. we solder, or
otherwise attach the wire stems D. and D' which are by preference made of copper,
and made to project from the lamp in a diverging direction, and in order to make the
connections between the said stems and platinum links rigid, and protect the junction
or contact from damage, we place a metal hoop or collar E. around the same, and fill
the interior space E with insulating cement, such as plaster-of-paris: thus giving
support and protection to the base of the wire stems D. and D₁ and platinum links,
which when broken destroy the utility of the lamp.
The lamp holder block F. may be of wood, in which two holes are bored in a
diagonal direction, and in each is placed a wire spiral spring G. the outside diameter
of which fills the hole the upper portion of each spring being connected to a
terminal H. and H' therebyc ompleting the circuit between the positive and negative
cables.

page_text: The diameter of the wire stems D. and D¹ and the inclination of the same are such
that when inserted into the interior of the spiral springs G. either for the whole
distance as shewn by the drawings, or for a portion only, the said springs clip the
stems to such an extent that, the lamp is held secure; thereby uniting the lamp with
the holder by long and enclosed metallic connections, thus reducing the liability of
oxidation through the open exposure to the atmosphere of the metallic connections or
contacts between the two, thereby making the lamp more effective.
The holder may be suspended by a hook J. and the reflector K. supported by arin L.
attached to the bottom portion of the lamp, the reflector being held in position by the
movable spring arms M pressing on the top thereof.
Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed; we declare that what we
claim is :-
•
1. The combination of the platinum links or lamp terminals A. and A' with the
wire stems D. and D₁ and the collar E. having the interior space E¹ filled with
insulating material, all being arranged substantially in the manner and for the purpose
described.
2. The combination of the wire stems D. and D¹ with the spiral springs G. and
terminals Hand H' in the manner and for the purpose described.
3. An electric lamp holder in which are two spiral springs G enclosed within the
holder block F. and connected to the terminals H. and H for the purpose described.
Dated this Ofth day of October 1888
JOHN WAUGH,
Agent.