An Improvement in Carriage Lamps.
Year: 1893

page_text: Date of Application, 13th Oct., 1893
Complete Specification Left, 13th July, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
An Improvement in Carriage Lamps.
We CHARLES HENRY MARSHALL, FRANK SANDERS, NAYLOR SMYTHE, and
JOSEPH SMITH RICHARDS, trading together as Joseph Richards and Company, of
Spring Hill Coach Iron Works, Birmingham, Warwickshire, Manufacturers, do
hereby declare the nature of this invention to be as follows:-
This invention has reference to carriage lamps and consists in securing the
candle tube to the lamp body in the manner herein described by which the candle
tube can be attached to the lamp body by being merely inserted and pushed home
in the socket or removed from the socket by pulling the candle tube therefrom
without having to open the lamp or press by the thumb or fingers a spring bolt or
catch to release the candle tube as in some other carriage lamps.
For the purposes of this invention there is as in some other candle tubes of
carriage lamps an outwardly projecting ring or bead formed round the top of the
candle tube which can readily be made by soldering a ring of wire around the
same. This ring or bead is rounded or inclined both above and below for
the purposes of acting upon a spring bolt which we provide inside the bottom of
the lamp body the fore part of the spring bolt protruding into the socket of the
lamp in which the candle tube fits. This fore part is inclined or rounded both
underneath and on the top so that when the candle tube is inserted and pushed
home into the socket of the lamp body the rounded or inclined bead or ring on the
top of the candle tube acts upon the fore part of the bolt and forces the bolt
backwardly until the bead or ring has passed the fore end of the bolt when the
bolt shoots forward again and engages under the bead or ring on the candle tube
and thus secures the candle tube in place.
To remove the candle tube from the lamp body it is only necessary to pull the
candle tube with sufficient force to cause the inclined or rounded bead or lip on
the candle tube to act upon the upper inclined or rounded side of the fore part of
the spring bolt so as to force the spring bolt back and allow the bead or lip on the
candle tube to pass the same.
Instead of the spring bolt being arranged in the inside of the bottom of the
lamp body as above described a spring bolt may be similarly constructed and
arranged in the socket to act upon a rounded or inclined head or ring formed on
the candle tube some distance from the top thereof.
Dated this 11th day of October 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants,
COMPLETE SPECIFICATION.
An Improvement in Carriage Lamps.
We, CHARLES HENRY MARSHALL, FRANK SANDERS, NAYLOR SMYTHE, and
JOSEPH SMITH RICHARDS, trading together as Joseph Richards and Company,
of Spring Hill Coach Iron Works, Birmingham, Warwickshire, Manufacturers,
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 reference to carriage lamps and consists in securing the

page_text: candle tube to the lamp body in the manner herein described by which the candle
tube can be attached to the lamp body by being merely inserted and pushed home
in the socket or removed from the socket by pulling the candle tube therefrom
without having to open the lamp or press by the thumb or fingers a spring bolt
or catch to release the candle tube as in some other carriage lamps.
We will describe this invention by referring to the accompanying drawings on
which
Fig. 1 is a sectional elevation of the lower part of a carriage lamp and upper
part of the candle tube with our invention applied; Fig. 2 is a sectional plan of the
same; Fig. 3 shews the upper part of the candle tube of the same separately;
Fig. 4 is a longitudinal section and Fig. 5 is an end view of the spring bolt
and its casing which we provide in the lamp body as hereinafter described.
The same letters of reference indicate the same or corresponding parts in all the
figures of the drawing.
A is the lamp body; B is the socket of the same and C is the candle tube fitting
in the socket B.
For the purposes of this invention there is as in some other candle tubes of
carriage lamps an outwardly projecting ring or bead c¹ formed round the top of
the candle tube C which can readily be made by soldering a ring of wire around
the same. This ring or bead e¹ is rounded or inclined both above and below for the
purpose of acting upon the spring bolt D which we provide inside the bottom of
the lamp body A the forepart d' of this spring bolt protruding into the lamp
socket B in which the candle tube C fits. As will be seen by Figs. 1 and 4 the
forepart of the spring bolt D is inclined or rounded both underneath and on
the top so that when the candle tube C is inserted and pushed home into the
socket B of the lamp body A the rounded or inclined bead or ring c¹ on the top
of the candle tube C acts upon the forepart d' of the spring bolt D and forces the
bolt D backwardly until the bead or ring c¹ has passed the fore-end d¹ of the
bolt D when the bolt D shoots forward again and engages under the bead or ring c¹
on the candle tube and thus secures the candle tube in place. There is or may be
another ring on the candle tube which when the candle tube is inserted in the
socket and the bolt D has shot forward to engage under the bead or ring cas
stated above comes into contact with the bottom end of the socket B which thus
forms a stop to prevent the candle tube C being pushed too far into the socket B.
To remove the candle tube C from the lamp body it is only necessary to pull
the candle tube C with sufficient force to cause the inclined or rounded bead or
lip on the candle tube to act upon the upper inclined or rounded side of the
fore part of the spring bolt D so as to force the spring bolt back and allow of
the bead or lip c¹ on the candle tube C to pass the same.
The spring bolt D may be constructed in various ways so as to act as above
described but the construction shewn upon our drawing and which will be clearly
seen by an examination of Figs. 1, 4 and 5 is what we prefer. It will be seen that
the forepart d' of the spring bolt D is made in the form of a head which protrudes
through the open end of a tubular casing E which is soldered or otherwise fixed
inside the bottom of the lamp body this casing E containing a coiled wire spring f
which acts between the end e of the casing E and the head or forepart d' thus
continually forcing the spring bolt D forwards for its forepart d¹ to protrude into
the socket B as stated above. In order to prevent the fore part d' protruding too
far a collar d² is screwed and soldered on to the back end of the bolt D so as to
act as a stop by coming into contact with the back end e of the casing E.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In carriage lamps the hereindescribed improved means for securing the candle
tube in the lamp socket and for allowing of the removal of the candle tube there-
from-when required, that is to say, the combination, with the ring or bead such

page_text: as e fixed on the candle tube, of a spring bolt such as D arranged in the bottom
of the lamp body and made with its fore-end projecting into the lamp socket so as
to engage under the said ring or head and secure the candle tube in the lamp
socket, the said ring or bead and the bolt fore-end being shaped and arranged
substantially as set forth and shewn so that when the candle tube is being pushed
into the lamp socket and when the candle tube is being pulled out of the same
the said ring or bead will force back and pass the spring bolt substantially as
described.
Dated this 12th day of July 1894.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.