Improvements in Spring Brackets for Lamps for Cycles and in Brackets for Attaching same to Cycles.
Year: 1893

page_text: Date of Application, 9th Sept., 1893
Complete Specification Left, 7th June, 1894-Accepted, 1st Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Spring Brackets for Lamps for Cycles and in
Brackets for Attaching same to Cycles.
I JOHN HARRISON of Kensington Works Porchester Street in the City of
Birmingham Manufacturer do hereby declare the nature of this invention to be as
follows:-
I take a piece of flat steel or other suitable metal having four projections
(which I call a spring socket) and in each of these projections I form a cup for
the purpose of receiving the ends of the arms of the bracket. I then bend the
projections of the spring socket at right angles. I fix one of these sockets on the
back of the lamp and on the front of the clip respectively-the arms are provided with
suitable projections to fit into the cups of the sockets. The arms are then forced
into the sockets distending their sides and so keeping them in tension and whilst
allowing a perfectly free up and down motion prevents any side vibration or
rattle of the bracket, or in substitution for the spring sockets and arms above
described I use metal arms having at each end where such arm is fixed to the
back of the lamp and the front of the clip respectively a ball bearing joint such
ball bearing joint being made adjustable. By the use of these ball bearing
jointed arms the lamp is maintained in a perpendicular position, all side vibration is
entirely obviated and the lamp has an almost noiseless action and at the same time
rides very free and easy.
Instead of the usual coil spring employed for the support of the lamp I use
either a small double spiral spring or a flat corrugated steel spring, either of such
springs being fixed in such a position as to give the necessary support to the
lamp.
By the use of either of these springs the vibration is greatly lessened before
reaching the lamp thus keeping it more steady.
My improvement in brackets for attaching lamps to cycles is as follows:-
Instead of the ordinary flat cycle bracket I make a bracket with a tube such tube
being split open to form a spring, on the back of the lamp bracket, instead of the
ordinary flat clip rubber and adjustable screw, I fix a tube made to fit the split
tube on the cycle bracket. When the lamp bracket is fixed on the cycle bracket,
the lamp bracket compresses the split cycle bracket and is thus held firm and
perfectly rigid. The advantages of this part of my invention are that I do away
with the rubber in the flat clip and the adjusting screw usually employed for
fixing the lamp to the cycle.
The advantages of the first part of my invention are that by the use of the
spring sockets and arms and the ball bearing arms I do away with all rubber or
other similar washers or wood or metal washers usually employed to prevent any
noise in the action of the lamp, the lamp maintains a perpendicular motion
together with an almost noiseless action and entirely obviates the tendency to side
motions usually experienced with most spring brackets.
Dated this 8th day of September 1893.

page_text: Improvements in Spring Brackets for Lamps for Cycles and in.
Brackets for Attaching same to Cycles.
I JOHN HARRISON of Kensington Works Porchester Street in the City of
Birmingham Manufacturer 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 :-
My invention relates to improvements in spring brackets for lamps for cycles.
I take a piece of flat steel or other suitable metal having four projections
(which I call a spring socket) and in each of these projections I form a cup or
hollow cone for the purpose of receiving a similar cup or cone in the ends of the
arms of the bracket. I then bend the projections of the spring socket at right
angles. I fix one of these spring sockets on the back of the lamp and another on
the front of the clip respectively-the arms which are also made from flat steel or
other suitable metal and are shaped so as to form a spring, are provided at the
ends with suitable projections in the shape of a similar cup or cone to fit on to the
cups or cones of the spring sockets. The arms are then forced on to the spring
sockets compressing the sockets and distending the arms thus keeping both sockets
and arms in tension.
Or in substitution for the plain cup or cone in the socket and arms respectively
I use similar spring sockets and arms so constructed that the cups or cones of the
sockets and arms allow of the insertion of small balls thus forming a ball bearing
joint, such ball bearing joint being made adjustable as after mentioned.
In order to allow for the wear of the arms and sockets at the point of contact
and to make them self adjustable I pass through the cup or cone of the socket and
arm at such point of contact a small headed pin. The pins directly opposite each
other are connected by means of a small helical spring which is kept in tension
and as the points of contact of the sockets and arms wear the spring pulls the
arms and sockets still closer together thus keeping the arms and sockets in close
proximity and perfectly steady. I use similar pins and springs to make the ball
bearing joints self adjustable.
Instead of the usual coil spring used for the support of the lamp I use a small
double spiral spring one extremity of such spring being fixed to the socket and
the other extremity to the side of one of the arms in such a position as to give the
necessary support to the lamp.
By the use of this spring the vibration is greatly lessened before reaching the
lamp thus keeping it more steady.
The advantages obtained by my invention are that by the use of the spring
sockets and spring arms, the ball bearing joints and the adjusting pins and springs,
I dispense entirely with all rubber or similar washers or wood or metal washers
usually employed to prevent any noise in the action of the lamp the lamp is
noiseless in its action and the tendency to side motions usually experienced with
most spring brackets is entirely obviated and the bracket is automatically adjusted
at the wearing parts.
The accompanying drawings show the various parts.
The spring sockets with the cups or cones are shewn at (a) in Fig. 1 in section &
at (a) in Fig. 2. The arms are shewn at (b). The pins and connecting springs
for making the arms and spring sockets self adjustable at (c). The ball bearing
joint is shewn in section at (d) Fig. 1 and the double spiral spring for support of
the lamp is shewn at (e).
I do not confine myself to any special shape or form of any of the above parts
but avail myself of any shape or form adaptable to my invention.

page_text: 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 :-
1. The spring sockets and spring arms.
2. The spring sockets and spring arms combined with ball bearing joints as
above described.
3. The pins and springs for making such arms sockets and ball bearings self.
adjustable, and,
4. The double spiral spring for support of the lamp.
Dated this 6th day of June 1894.
JOHN HAKKISUN.