Improvements in Carriage Lamps.
Year: 1899

page_text: Date of Application, 3rd Aug., 1899
Complete Specification Left, 3rd May, 1900-Accepted, 23rd June, 1900
Improvements in Carriage Lamps.
I, GEORGE HARRY WILLIAM DAVIS, of Edgbaston Works, Gough Road, Edgbas-
ton, Birmingham, in the County of Warwick, Manufacturer, do hereby declare
the nature of my said invention to be as follows:-
My invention has- for its object improvements in carriage lamps and refers
in particular to that part of the lamp for holding the candle which has hitherto
been liable to drop out of its socket or tube through the vibration of the vehicle.
In carrying my invention into practice I form the tube or socket in which
the candle fits with a bayonet joint connection at the top for attaching the
same in its tube or socket which forms part of the lamp body in the usual
manner. I then fix a spring catch preferably from the interior of the candle
tube or socket the head of which is so formed that when the candle tube or
socket is fitted into the tube or body portion and turned round this head slides
over and is depressed by the projection in the interior of the tube or body por-
tion forming part of the bayonet joint connection but immediately it passes
this projection it springs back to its normal position thereby preventing the
candle tube or socket from being withdrawn or shaking loose until the spring
catch is depressed by the finger or thumb or by other means.
Dadd 11.
Q
1
1000
GEORGE HARRY WILLIAM DAVIS.
By George Barker,
Fellow of the Chartered Institute of Patent Agents,
Agent for Applicant, 77, Colmore Row, Birmingham.
I, GEORGE HARRY WILLIAM DAVIS, of Edgbaston Works, Gough Road, Edgbas-
ton, Birmingham, in the. County of Warwick, Manufacturer, do hereby declare
the nature of my said invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
My invention has for its object improvements in carriage lamps and refers
in particular to that part of the lamp for holding the candle which has hitherto
been liable to drop out of its socket or tube through the vibration of the vehicle.
In carrying my invention into practice I form the tube or socket in which
the candle fits with a bayonet joint connection near the upper end for attach-
ing the same in its tube or socket which forms part of the lamp body in the
[Price 8d.]
4
:

page_text: usual manner. I then fix a spring catch preferably from the interior of the
candle tube or socket the head of which is so formed that when the candle
tube or socket is fitted into the tube or body portion and turned round this
head slides under and is depressed by the projection in the interior of the tube
or body portion forming part of the bayonet joint connection but immediately.
it passes this projection it springs back to its normal position thereby prevent-
ing the candle tube or socket from being withdrawn or shaking loose until the
spring catch is depressed by the finger or thumb or by other means.
In order that my invention may be more clearly understood and easily carried
into practical effect I have appended hereunto a double sized sheet of drawings
upon which I have illustrated my improvements in carriage lamps.
Figure 1 is a view shewing a portion of a carriage lamp with the candle
socket connected thereto according to my invention.
Figure 2 is a view shewing a portion of the candle socket with my improve-
ments applied thereto.
Figure 3 is a sectional view of the candle socket.
Figure 4 is a part sectional view of a portion of the tube or socket into which
the end of the candle socket fits.
Figure 5 is a cross sectional plan view taken on the line -y of Figure 2.
In carrying my invention into practice I form the tube or socket T in which
the candle fits with a bayonet joint connection near the upper end for attaching
the same in the tube or socket L which forms part of the lamp body in the
usual manner. This bayonet joint consists in fixing to or forming on that
portion of the socket T which fits into the socket L the projecting ring or
flange. This flange or ring does not extend quite around the socket, the
space or opening 2 being left and the end turned downwards so as to form a
stop piece. Below the ring or flange t¹ and near to the stop piece the slot
or opening is cut or formed in the side of the tube T and fitting into this
slot is the spring catch A. This catch A which is fixed to the flat spring a
fastened in the interior of the lamp socket as clearly shewn at Figure 3 is
formed inclined so that one edge is flush or nearly flush with the surface of the
socket T the other edge projecting outwards as shewn at Figure 5 so that when
this end of the socket is fitted into the socket or tube L and turned round this
catch A slides under and is depressed by the slotted projection fixed in the
interior of the socket L as shewn at Figure 4, but immediately the catch A passes
this projection it springs back to its normal position and as the end of the
ring or flange comes in contact with the projection the tube T cannot be
withdrawn until the catch A is depressed thus this tube T is firmly and rigidly
held in position. When fitting the tube T in position the upper end is pushed
into the socket L, the slotted projection fitting between the space 72, the
tube T is then turned round allowing the ring or flange t¹ to pass through or
between the slot of the projection and as the catch A comes against the pro-
jection it is depressed as shewn in dotted lines Figure 3 but immediately it
passes from under this projection or stop piece it springs into its normal posi-
tion thus the tube or socket T is firmly locked in position and prevented from
shaking loose.
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:-
:-
CLAIMS.
First The improvements in carriage lamps consisting essentially in attach-
ing or fixing the candle tube or socket such as T to the lamp by a bayonet
joint connection in combination with a spring catch in the manner substantially
as herein set forth and as shewn upon the accompanying drawings.
Second: In carriage lamps fixing or securing the tubes or socket such as T
in the socket or tube L by a spring catch such as A in combination with the

page_text: ring or flange such as t¹ and stop piece 3 which ring or flange passes through the
slotted projection in the manner and for the purpose substantially as herein
set forth and as shewn upon the accompanying sheet of drawings.
Dated this lot dox of Wa.. 1000
GEORGE HARRY WILLIAM DAVIS.
By George Barker,
Fellow of the Chartered Institute of Patent Agents,
Agent for Applicant, 77, Colmore Row, Birmingham.