IMPROVEMENTS IN BICYCLE AND TRICYCLE LAMPS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I GEORGE BAXTER, of 174, Bordesley Park Road, Birmingham, in the county
of Warwick, Pawnbroker," do hereby declare the nature of my invention for
"IMPROVEMENTS IN BICYCLE AND TRICYCLE LAMPS to be as follows:-
To be the praciple of carrying a greater quantity of the oil used in lighting
the lamps by the arrangement of two chambers formed of suitable metal, and of
different sizes. The large chamber I name the Reservoir the small chamber the
Oil Box, the Reservoir forms the back of the lamp and is fastened to the oil box
in such a manner that when filled with oil the oil is allowed to run out of the
Reservoir and into the oil box Automatically, and through an aperture connecting
O the Reservoir with the oil box and acting as a Syphon. The Reservoir and oil box
are held in position in the lamp by suitable springs or other fasteners and are
inserted from the back of the lamp.

page_text: I GEORGE BAXTER of 174 Bordesley Park Road, Birmingham, Warwickshire
Pawnbroker do hereby declare the nature of my said invention for IMPROVE-
MENTS IN BICYCLE AND TRICYCLE LAMPS and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
The object of my invention is to produce a lamp for use on bicycles and tricycles
that shall be capable of burning and giving light for a very long period without
attention or without requiring to be replenished with oil and I effect this object
by providing two receptacles for the said oil in manner as hereinafter described
without unduly or to any inconvenient extent increasing the size of the said lamp.
My invention also can be adapted and applied to any existing lamp with a minimum
of expense and trouble.
In order fully and clearly to explain my invention and in what manner the
same is to be performed I refer to tho accompanying drawing in which I have
shewn a very common form or style of lamp fitted with and adapted for this my
invention.
Figure 1 is a vertical soction of this lamp so fitted and adapted as aforesaid.
Figure 2 is a front clevation of my improved receptacle for the oil also partly in
section and taken at a. b. in Figure 1.
The casing or body of the lamp A may be made of any usual or convenient form
but without the whole or part of the usual back as formed therewith. Tho
required and necessary back or part thereof is formed by one of my receptacles for
oil B which forms the reservoir therefor. This receptacle B is secured to or formed
with the back of the usual receptacle C which carries the burner D with the wick E
and this receptacle C is thus the service receptacle. The burner and wick aforesaid
may be formed and constructed and actuated in any usual or convenient manner.
An aperture F is made in the back of the receptacle C which communicates with
the receptacle B. The receptacle C is placed or as is preferable is made to slide
into its proper position in the lower part of the lamp casing A when the receptacle B
entirely closes the open space left therefor and forms the back or a part thereof of
the lamp as is desired. The double receptacle can be secured in position in any
convenient manner. A very suitable method is shewn in the drawing according
to which method a stud G is secured on the front of the receptacle C which passes
through an aperture made therefor in a midfeather or low transverse partition H
firmly secured to the sides and bottom of the casing A of the lamp and a screw nut
or other fastening K on this stud G secures the double receptacle firmly in position
and if desired any other suitable fastenings such for example as shewn at L may
be used to assist in securing the receptacle B in position and on the front of the
receptaclo B is fixed if required the usual or other reflector M.
The method of using and the action of this double receptacle is as follows. The
double receptacle when removed from the lamp is inclined backwards and the oil
is poured in as is usual through the aperture which receives the burner or through
any other usual aperture made in the service receptacle C and the said oil passes
through the aperture F and fills first the receptacle B when the receptacle C is also
partly filled. The double receptacle is then secured in position as aforesaid in the
casing or body of the lamp ▲ when the oil from the receptacle B will fill the
receptacle C until the aperture F is covered when as no more air can enter the
receptacle B to take the place of the outflowing oil this flow ceases until as the oil
is consumed by the flame in the wick the aperture F is uncovered when more

page_text: oil flows out of the receptacle B and the said aperture F is again covered and
so on. Thus the oil will always be maintained at the required height in the
receptacle C until all the oil has passed in manner aforesaid out of the receptacle B
and the amount of oil that can be conveniently and easily carried by and in this
lamp is greatly increased without materially and to any injurious extent increasing
the size of the lamp or the amount of horizontal surface of oil which might be
affected by the motion of the velocipede.
It is obvious that I do in no way limit myself to the exact shapes and propor-
tions of these two communicating receptacles as shewn in the drawing for any
shape or proportion therefor may be used having regard to the particular lamp
with which this double receptacle is to be used and the methods of construction
and attachment may also be varied as may be desired in each particular case.
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
In bicycle and tricycle lamps the combination of a vertical receptacle with the
usual horizontal receptacle for oil the whole combined and acting substantially as
and for the purpose herein before described and declared.
Dated this 29th day of December 1884.