Improvements in Carriage Lamps.
Year: 1892

page_text: Date of Application, 16th Nov., 1892
Complete Specification Left, 9th Sept., 1893-Accepted, 14th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Carriage Lamps.
We, ALFRED ERNEST PURROTT and EDWARD WILLIAM WILLARD, both of
285 Broad Street, in the City of Birmingham, Manufacturers, do hereby declare
the nature of this invention to be as follows:-
This invention relates to the manner in which we construct and arrange carriage
lamps whereby we are enabled to make a secure attachment of the lamp to the
socket stump while at the same time rigidly securing the candle tube to the lamp
body.
In carrying our invention into effect we construct the body or upper portion of
the lamp with its door, reflectors, and hood, arranged in any well known manner,
but we form on the bottom or base of the lamp an improved socket for entering
the stump of the lamp iron. This socket we provide with a rim or bead for
resting upon the upper portion of the stump. The lower end of the socket we
provide with an opening for receiving a projecting pin or stud which we form upon
a collar carried on our improved candle tube or lamp barrel for the purpose of
preventing this candle tube from turning round when in position within the lamp
socket.
The candle tube or lamp barrel we construct out of any suitable metal and we
provide it with a spring in the usual ordinary manner for working up the candle
into the nozzle of the lamp, and we form upon the tube a flange or ring having a
projecting pin or stud as before described for preventing its rotation when within
the socket. The flange or ring being for the purpose of resting against the lower
end of the stump and forming a stop to prevent the lamp from being drawn out.
from the lamp iron. At the upper end of the candle tube we place a screwed ring
preferably of metal, soldered on or otherwise attached to the tube, and we cause
this screwed end to enter into a similarly screwed base formed upon the nozzle, so
that when the nozzle is turned round it forms a nut for screwing into position the
candle tube and for drawing up the flange against the end of the stump; thereby
securely locking the lamp to the stump in a manner which prevents its withdrawal
while the door of the lamp is closed.
We secure our lamps to the stump when arranged for burning oil by means of a
bolt and nut which we employ for this purpose, the bolt being in effect the candle
tube and the nut the nozzle as hereinbefore described. We employ a bottom cap
or washer to fit over the lower end of the stump, and we arrange a nut upon the
body of the lamp to screw on to a bolt passing through or from the bottom cap.
We sometimes arrange a handle or tube which encloses the bottom cap or bolt.
We sometimes attach the candle tubes to the sockets by means of a pin and
slot joint. The pin being attached to or formed upon the candle tube and being
arranged to fit into a slot having a spring lip or bar which prevents its withdrawal
until it is first lifted up before being turned round to pass out of the slot or
groove.
By another method we obviate the lifting action by forming our spring with a
groove or bed into which the pin can enter when it has reached the end of the slot
or groove.
We do not limit the application of our improved method of attaching candle
tubes and lamps to carriage stumps to any particular form of lamp but we modify
the same to suit any particular requirement.
11
CAT
11000
MARKS & CLERK,
5, Furnival's Inn, London, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Carriage Lamps.
We, ALFRED ERNEST PURROTT and EDWARD WILLIAM WILLARD, both of
285 Broad Street, in the City of, Birmingham, 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 relates to the manner in which we construct and arrange carriage
lamps whereby we are enabled to make a secure attachment of the lamp to the
socket stump while at the same time rigidly securing the candle tube to the lamp
body.
In the accompanying sheet of explanatory drawings-
Figure 1 is a sectional elevation of our improved lainp-tube and socket shown on
an ordinary carriage lamp body.
Figure 2 is a sectional plan on the line x y.
Figure 3 is an enlarged sectional elevation showing a portion of the candle tabe
and our improved channel fastening for the pin joint, and
Figure 4 is a plan of the same.
Figure 5 is an enlarged elevation of a portion of our candle tube with collar and
studs shown thereon, and
Figure 6 is a plan of the same.
In carrying our invention into effect we construct the body or upper portion of
the lamp A with its door, reflectors, and hood, arranged in any well known manner,
but we form on the hottom or base of the lampan improved socket for entering
the ordinary stump of the lamp iron. This socket B we provide with a rim or
bead C for resting upon the upper portion of the stump. The lower end of the
socket we provide with an opening B' for receiving a projecting pin or stud D
which we form upon a collar E carried on our improved candle tube or lamp
barrel F for the purpose of preventing this candle tube from turning round when
in position within the lamp socket B.
•
The candle tube or lamp barrel F we construct out of any suitable metal and we
provide it with a spring G in the ordinary manner for working up the candle into
the nozzle of the lamp, and we prefer sometimes to form upon the tube a flange or
ring E having a projecting pin or stud D as before described for preventing its
rotation when within the socket. The flange or ring E being for the purpose of
resting against the lower end or underside of the stump and forming a stop to
prevent the lamp from being drawn out from the lamp iron. We attach this
Hange E to the tube F in any convenient mauner by placing collars or ring
keepers e el upon the tube; the collars being soldered or secured thereto in any
ordinary manner. The upper ring el is cut away as shown at Figures 5 and 6 for
the purpose of permitting the tube to turn when the stud enters the bayonet
joint.
We prefer to attach the candle tubes to the sockets by means of a pin H and a
slot joint J. The pin H being attached to or formed upon the candle tube F and
being arranged to fit into a slot J having a spring lip or bar K which prevents
its withdrawal until the spring is first lifted or overcome before being turned round
to pass out of the slot or groove.
By another method we obviate the lifting action by forming our spring with a 4
groove or bed K¹ into which the pin can enter when it has reached the end of the
slot or groove.
曲
At the upper end of the candle tube we sometimes place a screwed ring preferably
of metal, soldered on or otherwise attached to the tube, and we cause this screwed.
end to enter into a similarly screwed base formed upon the nozzle. so that when the 5
nozzle is turned round it forms a nut for screwing into position the candle tube
and for drawing up the flange against the end of the stump; thereby securely

page_text: locking the lamp to the stump in a manner which prevents its withdrawal while the
door of the lamp is closed.
We secure our lamps to the stump when arranged for burning oil by means of a
bolt and nut which we employ for this purpose, the bolt being in effect the candle
tube and the nut the nozzle as herein before described. We employ a bottom cap
or washer to fit over the lower end of the stump, and we arrange a nut upon the
body of the lamp to screw on to a bolt passing through or from the bottom cap.
We sometimes arrange a handle or tube which encloses the bottom cap or bolt.
We do not limit the application of our improved method of attaching candle
tubes and lamps to carriage stumps to any particular form of lamp but we modify
the same to suit any particular requirement.
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 :-
(1) The construction of carriage lamps in which the fittings and fastenings are
arranged substantially as and for the purposes herein before described and as
illustrated in the accompanying drawings.
(2) In a carriage lamp the construction and arrangement of a flange such as E
substantially as and for the purposes hereinbefore described and as illustrated in
the accompanying drawings.
(3) In a carriage lamp candle socket the combination of a spring such as K K¹
a pin or stud such as H working in a slot or joint channel such as J, with a loose
or independent collar E having a guide stop D thereon substantially as and for
the purposes hereinbefore described and as illustrated in the accompanying
drawings.
Dated this 1st day of September 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.