Improvements in Lamps for Cycles and similar Vehicles.
Year: 1894

page_text: Date of Application, 10th Feb.,
1001
TOUT
Complete Specification Loft 10th Nov 1804 Accented 5th Jan 1895
Date of Application,
TOL TCU.,
TOUT
Complete Specification Left, 10th Nov 1804 Accented 5th Jan 1895
PROVISIONAL SPECIFICATION.
Improvements in Lamps for Cycles and similar Vehicles.
We, ROLAND HARRINGTON of 48 Cross Street South Wolverhampton, in the
County of Stafford, Engineer and ALICE DUFF HOLLAND 10 Sparsholt Road
Crouch Hill in the County of Middlesex (wife of John W. Holland), do hereby
declare the nature of this invention to be as follows:-
-
The object of this invention is to supply a lamp for cycles & for similar vehicles
which shall resist the effects of the vibration of the machines over rough roads, &
yet shall be perfectly noiseless. The invention is applicable to any & every form
of lamp & refers only to the attachment of the lamp proper to the cycle or other
vehicle. This attachment of the lamp to the machine is commonly known in the
trade as the lamp back, & for convenience of description we shall refer to our
invention in this Specification as our improved lamp back.
In carrying out this invention we make our improved lamp back in one of two
forms; either (1) jointless, & therefore noiseless; or (2) in such a form that the
joints of the lamp & lamp back work on centres, the said centres being held by
springs of such a strength as to allow free motion to the lamp whilst they hold the
male & female centres so closely together as to prevent any rattle or jar. In
the former case we make our improved lamp back of steel, brass, copper, or other
suitable elastic material in such a way that it can be attached to the lamp bracket
on the one hand by any of the well known methods at present adopted; at the
other end we fix it firmly to the lamp, so that neither in its attachment to the lamp,
nor to the lamp bracket, is there any joint. Between the attachments to the lamp
bracket & to the lamp we fashion the material by coiling either helically, spirally
or by other well known methods, so that although the lamp back is secured firmly
& rigidly at each end, in the centre part it is elastic. The coils or bends are
preferably fashioned in such a way that whatever the motion or play of the lamp
may be the said coils or bends do not touch or rub against each other. The coils
or bends may be either vertical, horizontal or in any other convenient direction.
The number position & direction of these coils or bends is a matter of taste or
convenience but we make them of such a form & strength as to hold the lamp in
the one desired position at the same time that they are sufficiently elastic to prevent
any sudden jar to the lamp caused by the passage of the machine over rough roads.
In the second case we make the improved lamp back in form similar to those at.
present in use but instead of plain joints we make the arms of the lamp back to
work on centres, male & female respectively, the said centres being held firmly
together by springs of sufficient elasticity to allow free play to the lamp while they
prevent all noise rattle or jar. We may if desired combine the two forms & make
the lamp partly jointless & partly working on centres. In the inner part of that.
portion of the lamp back which is attached to the lamp bracket we fit one or more
steel springs in such a way that when the lamp is attached to the bracket these
springs keep it firmly in position & prevent rattle or jar. This improved form
of attachment is applicable to any form of lamp whether it be or be not fitted
with our improved form of lamp back.
Instead of making the attachment to the lamp bracket with a spring or springs
as described above we may if preferred make the lamp bracket of steel or other
suitable material in such a way that it may be fitted to or sprung over the part of

page_text: the cycle to which it is to be attached, with an arm projecting on either side the
said arms being bent so as to form a bracket of the required shape. These arms
are bent at such an angle that they cannot be fitted into the lamp back without
considerable pressure being exerted in forcing them together. The lamp back
being forced on under pressure causes the bracket to grip firmly the part of the
cycle to which it is attached, whilst the tendency of the arms of the bracket to
spring back to their normal position prevents any rattle or jar between the lamp &
bracket.
Dated this 10th day of Februerr 1801
Improvements in Lamps for Cycles and similar Vehicles.
We, ROLAND HARRINGTON of Zoar Works, Zoar Street, Wolverhampton, in
the County of Stafford, Engineer and ALICE DUFF HOLLAND of No. 10 Sparsholt
Road, Crouch Hill, London, 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 :-
The object of this invention is to supply a lamp for cycles and for similar vehicles
which shall resist the effects of the vibration of the machine over rough roads and
yet shall be perfectly noiseless. The invention is applicable to any and every form
of lamp and refers only to the method of attaching the lamp proper to the cycle
or other similar vehicle. This attachment of the lamp to the machine is
commonly known in the trade as the "lamp back" and for convenience of descrip-
tion we shall refer to our invention in this Specification as our improved
lamp back.
In carrying out this invention we make our improved lamp back in such a form
that while sufficiently elastic to allow free play to the lamp in every direction it is
jointless and thus noiseless. We construct our improved lamp back of steel, brass,
copper or other suitable elastic material in such a way that it can be attached to
the lamp bracket on the one hand by any of the well known methods at present
adopted; at the other end we fix it firmly to the lamp so that neither in its attach-
ment to the lamp on the one hand nor to the lamp bracket on the other is there
any joint. Between the attachments to the lamp bracket and to the lamp we
fashion the material of which the improved lamp back is made, either by coiling
helically or spirally, or by other well known methods in such a way that although
the lamp back is held firmly and rigidly at each end, in the centre part it is elastic.
The coils or bends in the material are so fashioned that, whatever the motion or
play of the lamp may be, the said coils or bends do not touch or rub against each
other. The coils or bends may be either vertical, horizontal or in any other
convenient direction. The number, position and direction of these coils or bends
is a matter of taste or convenience according to circumstances, but we make them
of such a form and strength as to hold the lamp in the desired position, at the
same time that they are sufficiently elastic to prevent any sudden jar to the
lamp caused by the passage of the machine over rough and uneven roads.
In the inner part of that portion of the lamp back which is attached to the lamp
bracket and which is commonly known as the lamp "socket," we fit one or more
steel springs in such a way that, when the lamp is attached to the bracket, these
springs keep it firmly in position and prevent rattle or jar. This improved form of
attachment is applicable to any form of lamp, whether it be or be not fitted with
our improved form of lamp back.
And in order that our invention may be well understood we append drawings.

page_text: which show the general form and arrangement of the parts of our improved lamp.
back and lamp socket when constructed in the manner that we prefer to adopt,.
though the invention may be carried out in other ways and modifications may be.
made without departing from the spirit of our invention.
Like numerals refer to like parts throughout the several views.
Figure 1 is a side view in elevation of our improved lamp back.and lamp socket..
The body of the lamp being indicated by dotted lines.
Figure 2 is a plan of the said lamp back and socket.
Figure 3 is a general view of one of the springs detached from the other
parts.
Figure 4 is a section of the lamp socket on the line - in Figure 1.
use.
The lamp back is, in this instance, constructed of four steel wire springs 2, 2,.
and 3, 3, each of which is provided with a straight central part 6 and straight.
ends 7 and 8 respectively, and between the central part and each end is a series of
approximately vertical spiral coils 9. The spiral is arranged at such a pitch that.
the coils do not normally touch each other and are not liable to do so in ordinary
The springs are arranged in two horizontal pairs 2 and 2 at the top with
their ends directed downwards and 3 and 3 at the bottom with their ends directed
upwards and in a line with the ends of 2 and 2 respectively. The springs are
secured in these positions by being fixed to two thin metal plates 11 and 12 respec--
tively. The edges of the plates are turned over to form tubes or the like, 14, of a
size adapted to receive the ends 7 and 8 of the springs respectively and the ends
are secured within the tubes or the like by soldering. The plate 11 is rivetted and
soldered to the back of the body of the lamp 15 and the plate 12 is soldered to
the socket 16, rivetting being unnecessary in this case as the temperature is not.
liable to be so high as at the other end of the lamp back. The lamp back is.
thus secured by its ends to the body and to the socket of the lamp firmly and
rigidly without any joint, but owing to the nature of the material favored by the
disposition of the same as described the centre part is elastic and prevents any-
sudden jar being caused to the lamp by the passage of the machine, to which it
is attached, over rough and uneven roads. Wire bridges 13 with hooked ends.
may be soldered to the centres 6, 6, of the springs so as to connect them in pairs.
and assist in maintaining the parts in position as shown.
The lamp socket 16 is constructed of an outer band of metal 17 in the usual way
and to the back or front of it is secured by a rivet 18 a spring 19, preferably from
a strip of thin spring steel. The spring 19 lies within the band 17 the contour of
which it approximately follows except that each end 21 of the spring is curved in.
towards the centre of the socket. The depth of the spring is preferably nearly
equal to the depth of the socket. Within the spring 19 is sprung or placed a
bent strip of india-rubber or the like 20 which is preferably prevented from being
pushed upwards out of the socket by a light metal flange 21 soldered to the top of
the band 17. The ends of the strip 20 preferably terminate short of the curved
ends 21 of the spring 19. When the socket is fitted on to the lamp bracket the
tongue thereof is held firmly between the ends 21 of the spring on the one side and
the strip of india-rubber or the like 20 on the other, as shown in Figure 2 where
the tongue 22 is indicated by dotted lines.
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. In a lamp for cycles and similar vehicles, constructing the lamp back without
joints substantially as and for the purpose set forth.
2. In a lamp for cycles and similar vehicles, constructing the lamp back without
joints and of an elastic material in such a way as to prevent jar to the lamp-
substantially as hereinbefore described.
3. In a lamp for cycles and similar vehicles, constructing the lamp back of
helical or spiral springs held firmly to the body of the lamp and to the lamp.

page_text: socket and adapted to hold the body of the lamp in the desired position and to
prevent jar thereto substantially as hereinbefore described.
4. In a lamp for cycles and similar vehicles, constructing the lamp back substan-
tially as hereinbefore described and as illustrated in Figures 1, 2 & 3 of the
accompanying drawings.
5. In a lamp for cycles and similar vehicles, constructing the lamp socket with
one or more steel springs so that when the lamp is attached to the bracket it is
held firmly in position and rattle and jar are prevented substantially as hereinbefore
described.
6. In a lamp for cycles and similar vehicles, constructing the lamp socket
substantially as hereinbefore described and as illustrated in Figures 1, 3 & 4 of the
accompanying drawings.
7. The improvements in lamps for cycles and similar vehicles substantially as
herein described and illustrated.
י
JOHN WILLIAM HOLLAND,
Agent for Roland Harrington and Alice Duff Holland.