Improvements in and relating to Velocipede Lamps.
Year: 1890

page_text: Date of Application, 10th July, 1890
Complete Specification Left, 10th Apr., 1891-Accepted, 16th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to Velocipede Lamps.
We, JOSEPH LUCAS, and HARRY LUCAS, trading as J. Lucas and Son, of the
Tom Bowling Lamp Works, Little King Street, Birmingham, Manufacturers, do
hereby declare the nature of this invention to be as follows:-
Our invention relates to improvements in the joints of the connecting arms or
links of velocipede lamps having spring backs, and it has for its object, perfecting
the said joints so as to avoid all looseness and shake after wear, and still retain their
free action.
We attain this end in the following manner;-We form on the back of the lamp
and on the socket for the lamp bracket the usual hollow sleeves or eyes if the links
or arms are of the "gate" pattern, and inversely, if the hollow sleeves or eyes
form part of the links or arms, we form simple ears on the back of the lamp and on
the socket respectively.
In each of the hollow sleeves or eyes is placed a coiled or spiral spring which
abuts against a rubber washer placed in each end of the said hollow sleeve or eye.
Outside these rubber washers are placed leather washers slightly cupped or coned.
In the ears of the links or arms or on the back of the lamp or on the socket, as the
case may be, are threaded holes to receive short screws having coned ends adapted
to fit in the coned or cupped leather washers hereinbefore referred to. It will be
understood that when the joint is completed the coiled or spiral spring is in
compression and acts through the rubber washers to keep the coned or cupped
leather washers up to the coned screws, and. so keep the joint firm and free from
shake under wear.
To prevent the ears carrying the coned screws from "spreading," we either pass
a light rod through from one coned screw to the other, suitable holes being formed
in the rubber and leather washers, or we tie each pair of ears together by a cross
bar, or its equivalent, so as not to interfere with the free play of the lamp.
Dated this 10th of Jul. 1900
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers, 70-72, Chancery Lane, London, W.C.,
Agent for the Applicants.
COMPLETE
SPECIFICATION.
Improvements in and relating to Velocipede Lamps.
We, JOSEPH LUCAS, and HARRY LUCAS, trading as J. Lucas and Son, of the
Tom Bowling Lamp Works, Little King Street, Birmingham, Manufacturers, do
hereby declare the nature of this invention and in what manner the same is to be
performed to be particularly described in and by the following statement:―
Our invention relates to improvements in the joints of the connecting arms or
links of velocipede lamps having spring backs, and it has for its object, perfecting
the said joints so as to avoid all looseness and shake after wear, and still retain their
free action.
We attain this end in the following manner;- -We form on the back of the lamp
and on the socket for the lamp bracket, the usual hollow sleeves or eyes if the arms
of the spring back are of the "gate" pattern, and inversely, if the hollow sleeves or

page_text: eyes form part of the arms we form simple ears or lugs on the back of the lamp
and socket respectively.
In each end of the hollow sleeves or eyes is placed a rubber bush or plug having
a central hole coned or cupped at its outer face. Outside these rubber bushes we
sometimes place leather washers cupped or coned to fit in the coned or cupped ends
of the rubber bushes or plugs. Between the inner ends of each pair of rubber
bushes or plugs we place a coiled or spiral spring adapted to act against the ends of
the said bushes or plugs and force them outwards. In the ears of the arms or on
the back of the lamp or socket, as the case may be, are formed holes threaded to
adapt them to receive short pins the ends of which are adapted to fit in the coned
or cupped ends of the flanged rubber bushes or plugs, or in the cupped or coned
leather washers fitting therein. It will be understood that when the joint is
completed the coiled or spiral spring is in compression and acts to keep the coned or
cupped bushes or plugs up to the pins, and so keep the joint firm and free from
shake under wear.
To prevent the ears carrying the pins from springing apart, or "spreading," we
either pass a light rod through from one pin to the other, or we tie each pair of ears
together by a cross bar or its equivalent, arranged in a suitable manner so as not to
interfere with the free play of the lamp.
In order that our invention may be fully understood we will more particularly
describe it making reference to the accompanying drawing, in which
Figure 1. is a view in side elevation of a lamp embodying our invention,
Figure 2. is a view in plan-partly in section-of the top arm thereof; and
Figure 3. is a view in sectional plan of the bottom arm thereof.
Figures 4. and 5 are views in broken sectional elevation and plan respectively of
another form our invention may assume, and
Figure 6. is a view in plan-partly in section-of a further modification of our
invention.
Throughout the several views similar parts are marked with like letters of
reference.
Referring to the Figures 1. 2. and 3. of the accompanying drawing. A designates
the lamp, B the adjustable socket, C the top arm and C the bottom arm of the
spring back. The controlling spring may be of the type shown by Figures 1. and 2.
of the accompanying drawing or of any other suitable and convenient type.
a, a, designate the sleeves or eyes on the back of the lamp, and b. b. those on the
back of the socket. In the ends of these sleeves or eyes are placed flanged rubber
bushes or plugs D. D. etc. having central holes which are coned or cupped at their
flanged ends. In the ears c. c. etc. and e¹ c¹ etc. of the arms C and C₁ respectively
are fixed short pins E. E. etc. having ends projecting inwardly and shaped to adapt
them to engage with the coned or cupped ends of the rubber bushes or plugs D. D.
etc. either directly as shown by Figures 3. 5. and 6. of the accompanying drawing,
or indirectly through cupped or coned leather washers D₁ D¹ etc., as shown by
Figure 2. of the accompanying drawing. To prevent the bushes or plugs D. D. etc.
from turning in the sleeves or eyes carrying them the ends of the sleeves are
provided with projecting spikes or teeth d. d. etc. adapted to engage with and embed
in the flanges of the rubber bushes or plugs on in the leather washers. To prevent
the ears c. c. etc., and c¹ c¹ etc. from springing apart, or "spreading," each pair is
tied together by a screw pin F. either forming part of one of the pins E and
screwing into the other as shown by Figures 2. and 3. of the accompanying drawing
or passing freely through one pin E and screwing into the other as shown by
Figure 6 of the accompanying drawing. Instead of these cross pins each pair of
ears may be tied together by a cross bar c*, or its equivalent, as shown by Figures 4.
and 5. of the accompanying drawing. To take up the wear of the joints we either
interpose between the inner ends of each pair of rubber bushes or plugs D D in
each sleeve or eye, a coiled or spiral spring G. as shown by Figures 2. and 3. of the
accompanying drawing, or we adapt the pins E to be capable of adjustment in the
ears or lugs carrying them as shown by Figures 5 and 6. of the accompanying

page_text: drawing, the said pins being locked to the ears or lugs carrying them by small set
screws e. e.
We sometimes use the coiled or spiral spring G in one of the joints even when
the pins E are made capable of lateral adjustment, as it tends to check any excessive
movement of the lamp.
We do not limit ourselves to the use of rubber for the bushes or plugs, as any
suitable non-metallic substance or material may be used.
We wish it to be particularly understood that we do not limit ourselves to the
precise details of construction herein described and shown by the accompanying
drawing, but hold ourselves at liberty to make such changes and alterations as
fairly fall within the spirit and scope of our invention.
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 ;-
1st. The improvements in velocipede lamps, substantially as and for the purpose
herein described and illustrated in the accompanying drawing.
2nd. In a velocipede lamp having a spring back composed of two parallel arms
connecting the body of the lamp with its supporting socket, the movement of the
two arms being controlled by a suitable spring; the combination with the two arms,
of the coned or cupped rubber bushes or plugs, the coned or cupped leather
washers, the metal pins adapted to engage with the said coned or cupped leather
washers, the coiled or spiral springs acting against the said rubber bushes or plugs,
and the transverse cross pins or bars adapted to prevent the ears or lugs carrying
the metal pins from springing apart or "spreading," all combined, arranged, and
operating as and for the purpose set forth.
3rd. In a spring back for a velocipede lamp, the combination with the arms and
supporting sleeves or eyes or their equivalents, of the flanged and coned or cupped
non-metallic bushes or plugs, and the adjustable metallic pin adapted to engage
therewith, as set forth.
4th. In a spring back for a velocipede lamp, the combination with the arms and
supporting sleeves or eyes or their equivalents, of the adjustable metallic pins, the
flanged and coned or cupped non-metallic bushes and plugs, and the transverse
cross pins, all combined, arranged, and operating, as and for the purpose set forth.
5th. In a spring back for a velocipede lamp, the combination with the arms and
supporting sleeves or eyes or their equivalents, of the adjustable metallic pins, the
flanged and coned or cupped non-metallic bushes and plugs, and the transverse bars
adapted to prevent the ears or lugs carrying the metallic pins from springing apart
or "spreading," all combined, arranged, and operating, as and for the purpose set
forth.
6th. In the joints or bearings of the spring back of a velocipede lamp, the com-
bination of the coned or cupped rubber or other suitable non-metallic bushes or
plugs, and of metallic counterparts, with or without intervening leather washers, as
set forth.
7th. In a velocipede lamp having a spring back the joints of which have rubber
or other non-metallic bushes or plugs, preventing the rotation of the said bushes or
plugs in the sleeves or eyes carrying them by means of spikes or teeth formed on
the ends of the said sleeves or eyes and adapted to engage with and embed in the
said non-metallic bushes or plugs, as set forth.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers, 70-72, Chancery Lane, London, W.C.,
Agent for the Applicants.