Improvements in and relating to Lamps for Velocipedes.
Year: 1888

page_text: Date of Application, 20th Aug., 1888
Complete Specification Left, 17th May, 1889-Accepted, 22nd June, 1889
PROVISIONAL SPECIFICATION.
Improvements in and relating to Lamps for Velocipedes.
I, HARRY LUCAS of the "Tom Bowling" Lamp Works, Little King Street,
Birmingham in the county of Staffordshire, Lamp Manufacturer, do hereby declare
the nature of this invention to be as follows:-
My invention relates, first to an improved method of fixing the burner in the oil
reservoir, and secondly to a means of adjusting the movement of lamps carried and
supported by anti-vibration arms, by adjusting the elasticity of the spring or springs
controlling the movement of the said arms.
I attain the first object of my invention by fitting a ring or cap in the top of the
oil reservoir to receive the burner which is adapted to fit tightly in the said ring or
cap. The top of the ring or cap is made of an increased diameter to form a cup or
recess round the burner when it is in place the object being to catch and confine the
oil which splashes up and creeps through between the burner and the ring or cap, no
matter how well or tightly it fits therein. To confine and keep the burner within the
ring or cap, a small flange is formed on the bottom of the ring or cap on the inner
side thereof. In this flange are cut two slots diametrically opposite to each other.
On the bottom of the burner are formed two lips which pass freely through the
slots in the flange on the lower part of the ring or cap, and when the burner is
turned round in the ring or cap, engage with the flange thereon and so prevent the
burner being removed from the ring or cap until such time as it is turned round
again to make the lips coincide with the slots in the flange.
I attain the second object of my invention in the following manner :-The body of
the lamp is suspended from its supporting socket by a pair of arms arranged in the
well-known manner to give the body of the lamp free play in the vertical plane. The
movement of these arms is controlled by one or more springs coiled or wound round
one or more of the pivotting pins of the said arms and preferably enclosed within
one or more of the bushes or eyes of the said arms. One end of each of these springs
is attached or connected to the pivotting pin and the other end to the arm it controls.
Each pivotting pin carrying a spring is fixed to the ears or bracket on the supporting
socket or body of the lamp as the case may be, in the following manner :-The pin is
provided with a head at one end, and is threaded at the other end, either to receive a
nut or an internal screw having a large head, to lock the said pin to the ears or
bracket. To enable the pin to be conveniently adjusted and to ensure its firm
interlocking with the ears or bracket carrying it, to overcome the torsional strain
caused by the spring, the interlocking faces of the head of the pin and the ear or
bracket are serrated or provided with interlocking teeth, or their equivalents, so that
the one may engage with the other and so securely fix the pin to the ears or bracket
in any desired position to give greater or less resiliency to the arm, and consequently
greater or less movement of the body of the lamp.
Dated this 20th of 1000
COMPLETE SPECIFICATION.
Improvements in and relating to Lamps for Velocipedes.
I, HARRY LUCAS, of the "Tom Bowling" Lamp Works, Little King Street,
Birmingham, in the County of Staffordshire, Lamp Manufacturer, do hereby declare

page_text: 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 :-
My invention relates, first, to an improved method of fixing the burner in the oil
reservoir, and secondly, to a means of adjusting the movement of lamps carried and
supported by antivibration arms; by varying the "set" of the body of the lamp with
respect to the spring or springs controlling the movement of the lamp.
I attain the first object of my invention by fitting a ring or collar in the top of the
oil reservoir to receive the burner, which is adapted to fit tightly in the said ring or
collar. The top of the ring or collar is made of an increased diameter to form a cup
or recess round the burner when it is place, the object being to catch and confine the oil
which splashes up and creeps through between the burner and the ring or collar no
matter how well or tightly it fits therein. To confine and keep the burner within
the ring or collar, a small flange is formed on the bottom of the ring or collar on the
inner side thereof. In this flange are cut two slots diametrically opposite to each
other. On the bottom of the burner are formed two lips which pass freely through
the slots in the flange on the lower part of the ring or cap, and when the burner is
turned round in the ring or collar, engage with the flange thereon and so prevent the
burner being removed from the ring or collar until such time as it is turned round
again to make the lips coincide with the slots in the flange.
I attain the second object of my invention in the following manner;-The body of
the lamp is suspended from its supporting socket by a pair, or pairs, of arms arranged in
the well-known manner to give the body of the lamp free play in the vertical plane..
The movement of these arms is controlled by one or more springs coiled or wound
round one or more of the pivotting pins of the said arms, and preferably enclosed
within, or forming, the bushes or eyes of the said arms. One end of each of these
springs is attached or connected to the pivotting pin and the other end to the arm it
controls. Each pivotting pin carrying a spring is fixed to the ears or bracket on the
supporting socket or body of the lamp as the case may be, in the following
manner. The pin is provided with a head at one end and is threaded at the
other end, either to receive a nut, or an internal screw having a large head,
for the purpose of locking the said pin to the ears or bracket. To enable
the pin to be conveniently adjusted and to ensure its firm interlocking with the ears
or bracket carrying it to overcome the torsional strain caused by the spring, the
interlocking faces of the head of the pin and the ear or bracket are serrated, or
provided with interlocking teeth or their equivalent, so that the one may engage with
the other and so securely fix the pin to the ears or bracket in any desired position,
and so vary the "set" of the body of the lamp to give greater or less resiliency.
thereto.
In order that my invention may be fully understood I will more particularly
describe it making reference to the accompanying drawing in which Figures 1. and 2.
are views in transverse section through the oil reservoir showing the method of fixing
the burner therein. Figure 3. is a broken view in plan of the oil reservoir showing
the slots in the flange. Figure 4. is a view in plan of the underside of the burner
showing the lips to engage with the flange on the oil reservoir. Figure 5 is a view
in side elevation-partly in section-of a lamp fitted with my device for adjusting the
strength of the spring controlling the movement of the lamp, and Figures 6 and 7
are views on an enlarged scale showing the device for adjusting the strength of the
controlling spring.
Throughout these views similar parts are marked with like letters of reference.
Referring to Figures 1. 2. 3 and 5. of the accompanying drawing. The oil
reservoir A is provided with a ring or collar a the top part of which is cupped to form
a receptacle round the burner, when in place, to catch and confine the oil which
splashes up and creeps through between the burner and the ring or collar. On the
bottom of the ring or collar a is formed an internal flange a¹ in which are cut or
formed two slots a a² diametrically opposite to each other. The burner B which
may be of any suitable internal construction is adapted to fit tightly in the ring. or
collar and on its underside are fixed or formed two lips b. b. which are made of such

page_text: a size that they will pass freely through the slots a a² as illustrated by Figure 1, and
are adapted when the burner is turned round into the position indicated by Figure 2.
to engage with the flange a and so lock the burner in position. It will be seen that
this device is a form of bayonet joint, and it will therefore be understood that a
greater or lesser number of slots in the flange of the ring or collar of the oil reservoir,
and of lips on the burner, may be used.
Referring to Figures 5. 6. and 7. of the accompanying drawing. The body of the
lamp X is connected to its supporting socket Y by a pair of arms Z. Z. arranged and
operating in the well-known manner. The movement of these arms is controlled by
any suitable form of spring C coiled or wound round the pivottal pin of one of the
joints of the arms ZZ and socket Y. One end of this spring is fixed to the
pivottal pin D and the other end to the arms Z. The form of spring I prefer to
use is that illustrated, and which is particularly described and shown in my prior
Patent No. 8. of 1888. The "set" of the body of the lamp X is varied by adjusting
the position of the pin D carrying the spring C with respect to the bracket y of the
supporting socket Y, and to effect this and lock the pin D firmly in position after
adjustment it is provided with a large head d on the inner face of which are cut or
formed teeth or serrations d¹ d¹ etc. to engage with similar teeth or serrations y. y. etc.
A saw-cut in the head d of the pin provides
on the interlocking face of the bracket y.
a means of turning the pin to vary
set
the "
of the lamp, and a small screw d²
threaded into the other end of the pin D, provides a means of keeping the toothed or
serrated interlocking faces of the pin D and bracket y engaged.
"
I wish it to be understood that I do not bind myself to the exact details of
construction hereinbefore described and shown, but hold myself at liberty to make
such changes and alterations as fairly fall within the spirit and scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is ;-
1st. The improvements in lamps for velocipedes substantially as set forth.
2nd. In a lamp for velocipedes, the use of the ring or collar a with cupped top and
flanged bottom, as and for the purpose set forth.
3rd. In a lamp for velocipedes confining the burner in a ring or collar fixed to the
oil reservoir and shaped to form a cup or recess round the burner, as and for the
purpose set forth.
4th. In a lamp for velocipedes having an antivibration spring back controlled by a
coiled spring mounted on one of the pivottal pins of the said spring back, varying the
set" of the body of the lamp, and controlling the resiliency thereof through the
strength of the spring, as hereinbefore described and shown.
5th. In a lamp for, velocipedes having an antivibration spring back, locking the
pivottal pin carrying the coiled controlling spring to the bracket carrying the said pin,
as set forth.
Dated this 17th day of May 1009.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers, 70, 71 & 72, Chancery Lane, London, W.O., Agent for the
Applicant.