Improvements in Cycle Brakes,
Year: 1897

page_text: Date of Application, 26th July, 1897
Complete Specification Left, 26th Apr., 1898-Accepted, 23rd July, 1898
Improvements in Cycle Brakes,
We, JOSEPH SANDERS, of 7, Vicar Street, Kidderminster, Manufacturer, and
ERNEST DIGBY HOPCROFT, of Norwood Villa, Birmingham Road, Kidderminster,
Boiler Inspector, both in the County of Worcester, do hereby declare the nature o
this invention to be as follows:-
Our invention has for its object "improvements in cycle brakes" by which we
save considerable friction and wear on the tyre and at the same time provide an
effective brake which acts on the side of the tyre and does not require the wearing
parts replaced. Our brake is also made adjustable to any shaped machine.
In carrying our invention into effect the clutch part of our brake is formed of
two levers pivoted near the centre, the lower ends being provided with rollers of
any suitable material such as hard wood glass or other suitable substance. The
top of the levers are connected to the brake rod by suitable links so that upon the
application of the brake the lower ends of the levers are closed against the side of
the tyre.
Attached to the pivot of the levers we provide a cone of hard rubber, hide, or
other suitable material which is so fixed in the centre between the levers that upon
the levers being actuated against the tyre, suitable cones formed on the rollers are
at the same time brought to bear on the centre cone and the speed at which the
rollers revolve is thereby materially reduced thus saving heat friction and noise,
while at the same time by the revolving of the rollers the friction on the tyre is
reduced over that of a fixed surface.
The brake is attached to the machine at or near the pivot and to make the
position of the pivot adjustable with regard to the tread we mount it on a vertical
bar sliding through a square socket which is attached to the machine, a cotter
having an elongated hole through which the vertical bar also slides, being pro-
vided in the socket with a screwed end and nut by which the cotter may be drawn
up, so as to fix the vertical bar between the side of the hole in the cotter and the
side of the hole in the socket, and thus vary the vertical position of the brake to
suit the build of the machine. The levers may be actuated from the handle or
other part of the machine by an arrangement of rods and cranks.
Dated this 24th day of July 1897
JOSEPH SANDERS,
ERNEST DIGBY HOPCROFT.

page_text: Improvements in Cycle Brakes.
We, JOSEPH SANDERS, of 7, Vicar Street, Kidderminster, Manufacturer, and
ERNEST DIGBY HOPCROFT, of Norwood Villa, Birmingham Road, Kidderminster,
Boiler Inspector, both in the County of Worcester, 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:
-
Our invention has for its object improvements in cycle brakes by which we save
considerable friction and wear on the tyre and at the same time provide an effective
brake which acts on the sides of the tyre and does not require the wearing parts
replaced our brake is also made adjustable to any shaped machine.
In order that our invention may be clearly understood and more easily carried
into practise we have appended a sheet of drawings upon which we have fully
illustrated the nature of our said improvements.
Figure 1 is a general front view of our brake attached to the handle head and fork
of an ordinary safety and shewing the brake in its normal position.
Figure 2 is a similar view of the acting part of the brake but shewing it when in
action.
Figure 3 is a cross section through Figure 2 on the line 1-2.
Figure 4 is a plan view of the handle bar and lever end.
Figure 5 is a cross section of the handle bar on the line 3-4.
Figure 6 is a enlarged view of the adjustable collar for attachment of the brake.
In carrying our invention into effect we form the body of our brake of the two
levers A and A¹ which are pivoted at a² and provided at their lower ends with the
rollers B which may be formed of hard wood glass aluminium or other suitable
material. The levers A and A¹ are operated by means of the tensional rod C
which is made adjustable at c¹ and is connected to the lever D) by the crank E
and spindle F being attached to the handle bar by the clip M so that upon the
depression of the lever I) by the thumb, the rod C is raised and thus the brake
is applied as shewn by Figure 2.
Attached to or hanging from the pivot a² we provide the block or cone H which
consists of leather rubber hide or other suitable material which is so arranged in
the centre between the lower parts of the levers A and A¹ that upon the said
levers being actuated against the tyre W the cones 6 which are formed on the
rollers B are brought to bear on the centre block or cone H the speed at which
the rollers B would otherwise revolve being checked by the centre cone thus saving
friction, heat and noise while at the same time by the partial revolving of the
rollers the friction on the tyre is reduced over that of a fixed surface. For the
exact adjustment of the position of the brake with regard to the tread of the wheel
we mount the pivot a² on the vertical bar or block a³ which is made to slide in
the slotted socket K so that the pivot can be raised or lowered in the said socket K
which is attached to the fork head by the collar k¹. The pivot a² is provided with
the screwed shoulder, a and nut a whereby the block or bar a³ is wedged tightly
against the sides of the socket K and in case an extra length of adjustment is
required the socket is made with a vertical projection more on one side of the
collar than the other so that by the reversal of the collar the socket is lowered or
raised as the case may be.
We may vary the particular shape and configuration of the brake or rollers
and block without departing from the nature of our said invention.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is:-
1st. In cycle brakes the rollers B and block H in combination with the crank E
and lever D operated substantially as and for the purpose herein set forth and
shewn upon the accompanying drawings.
2nd. In cycle brakes having a roller or rollers B the block H substantially as
and for the purpose herein set forth and shewn.
•
3rd. In cycle brakes the mode of and means for the adjustment of the brake
with regard to the tyre substantially as and for the purpose herein set forth and
shewn by Figure 6.
4th. In cycle brakes the rollers B and block H in combination with the means
for the exact adjustment of the brake to the tyre substantially as and for the
purpose herein set forth and shewn.
Dated this 25th day of April 1898
LEWIS WM. GOOLD,
Agent for Applicant, 5, Corporation Street, Birmingham.