Improvements in Carriage Lamps.
Year: 1892

page_text: Date of Application, 10th May, 1892
Complete Specification Left, 10th Feb., 1893—Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Carriage Lamps.
We, JOSEPH RICHARDS, CHARLES HENRY MARSHALL, FRANK SANDERS
and NAYLOR SMYTHE, 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 the hereindescribed
improved means for securing the candle tube to the lamp body which enables the
candle tube to be quickly attached to or detached from the lamp body without
opening the lamp.
In carrying out this invention we provide on the underside of the lamp body a
spring bolt the fore part of which protrudes into the socket of the lamp in which
the candle tube fits. This fore part is inclined underneath. The upper end of the
candle tube is enlarged so as to form a projecting lip which may either extend all
round the candle tube or only partly around the same. This enlarged upper end is
bevelled or rounded off so that as the candle tube is inserted and pushed up home
into the socket on the lamp body this bevelled top end of the candle tube will act
upon the said fore part (which is preferably inclined) and force the bolt backwardly
until the said enlarged end of the candle tube has passed the bolt when the bolt will
shoot forward again and engage under the said lip and thus secure the candle tube
in place. The said spring bolt is by preference arranged about horizontally along
the outside of the bottom of the lamp body the outer end of the bolt being turned
down and a coiled wire spring being provided round the bolt which acts between a
bearing fixed to the lamp body and a pin or side projection on the bolt so as to force
the bolt forward (as far as a stop will allow) to engage with the lip on the candle
tube as above stated.
To facilitate the withdrawal of the bolt from under the lip to enable the candle
tube to be removed we provide an inclined piece on the lamp body or on the socket
or barrel of the same against which incline the said pin or side projecting part of
the bolt is pressed by the said spring so that when the bolt is turned axially through
a small angle (which can readily be done by pressing the said turned down outer
end of the bolt) the said pin or side projection of the bolt acts upon the said
incline and withdraws the bolt which is by the spring shot forward again when the
bolt is turned.
7
Or instead of the spring bolt being made to turn it can be arranged to be pulled
back against the spring to release the candle tube.
Dated this 9th day of May 1892
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Carriage Lamps.
We, JOSEPH RICHARDS, CHARLES HENRY MARSHALL, FRANK SANDERS,
and NAYLOR SMYTHE, 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 the hereindescribed

page_text: improved means for securing the candle tube to the lamp body which enables the
candle tube to be quickly attached to or detached from the lamp body without
opening the lamp.
We will describe this invention by referring to the accompanying drawings on
which
Fig. 1 is a corner sectional elevation of part of a carriage lamp with this inven-
tion applied ;
Fig. 2 is an inverted plan of the same;
Fig. 3 is a similar view to Fig. 1 but shewing the spring bolt drawn back for the
removal of the candle tube ;
Fig. 4 is a separate view of the upper part of the candle tube;
Fig. 5 shews the spring bolt separately and
Fig. 6 illustrates a modified form of this invention.
The same letters of reference indicate the same or corresponding parts in all the
figures.
Referring firstly more particularly to Figs. 1, 2, 3, 4 and 5 in carrying out this
invention we provide on the underside of the lamp body A a spring bolt B the fore
part of which protrudes into the socket C of the lamp in which the candle tube D
fits. This fore part b' is slightly inclined underneath. The upper end d¹ of the
candle tube D is enlarged by having a collar d' soldered thereto so as to form a
projecting lip d' which may either extend all round the candle tube D or only
partly around the same. This enlarged upper end d' of the candle tube is bevelled
or rounded off as shewn so that as the candle tube is inserted and pushed up
home into the socket C on the lamp body this bevelled or rounded top end d¹
of the candle tube will act upon the said fore part 6' (which as aforesaid is slightly
inclined) and force the bolt B backwardly until the enlarged end of the candle
tube D has passed the bolt B when the latter will shoot forward again and the fore
part will engage under the lip 2 as shewn in Figs. 1 and 2 and thus secure the
candle tube D in place. The spring bolt B is by preference arranged about
horizontally as shewn along the outside of the bottom of the lamp body A. and is
supported in bearings e¹ e' in a bracket E which is fixed to the lamp body and the
outer end of the bolt is turned down at 6 to form a small lever for turning the bolt
by a side pressure of the thumb. f is a coiled wire spring which is provided round
the bolt B and which acts between the bearing e¹ and the pin or side projection g
on the bolt A so as to turn and force the bolt A forward (as far as the notch e in
the bearing which forms a stop will allow) to engage with the lip d' on the
candle tube D as above stated.
To facilitate the withdrawal of the bolt B from under the lip to enable the candle
tube D to be removed, the bearing or part e against which the pin g is forced by
the spring fis made inclined (see Figs. 1, 2 and 3) so that when the bolt B is turned
axially to release the candle tube the side projection g of the bolt B acts upon the
incline e and withdraws the bolt B which is by the spring f shot forward again
when the end of the bolt is released.
Or instead of the spring bolt B being made to turn as above described and shewn
in Figs. 1, 2 and 3 the bolt B can be arranged to be pulled back against the springf
by direct end wise pressure on the end 2 so that the fore end b' will be drawn back
from under the lip and release the candle tube. In this case, as shewn in Fig. 6,
the inclined part e³ is not required.
The collar h fixed on the outside of the candle tube abuts against the bottom
of the socket c when the candle tube is in place in the socket as shewn in
Figs. 1 and 6 and thus prevents the candle tube being pushed too far into the
socket.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
In carriage lamps the hereindescribed improved means for connecting the candle

page_text: tube to the lamp body, consisting of a spring bolt constructed and combined with
the lamp body and arranged to operate and engage with the candle tube substan-
tially as hereinbefore described and illustrated by the accompanying drawing.
Dated this 9th day of February 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.