Improvements in Brakes suitable for Velocipedes
Year: 1897

page_text: Date of Application, 7th Jan., 1897
66
PROVISIONAL SPECIFICATION.
Improvements in Brakes suitable for Velocipedes."
We, ARTHUR SYDENHAM, Engineer, and WILLIAM THOMAS SHAW, Chairman of
the Crypto Works Company Limited, both of 29 Clerkenwell Road in the
City of London, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to adapt to the rear wheel the brake described
in the specification of a Patent granted to John Gardner No. 16043 of 1893.
To an ordinary rear hub, we screw outside the ball bearing on the chain side a
disc which we call the driving disc. This disc has two segmental bosses or pro-
jections upon it near the periphery and at the opposite ends of a diameter, which
pass into slots in the web of the chain wheel as hereinafter described.
One of the projections on the driving disc is suitably formed to receive a loop
at one end of the brake band, the other end of the band being fixed to the inside
of the rim of the chain wheel. A lock-nut screwed on to the outside end of the
ball bearing serves to keep the driving disc in position. The chain wheel is
slipped on over the driving dise the projections on the latter passing through the
slots in the chain wheel. These slots are of greater length than the projections
upon the driving disc, so that the chain wheel is free to move relatively to the disc.
Inside the brake strap is a drum screwed upon the spindle and held fast and
prevented from rotating by a boss upon its outside surface, which is held by the
frame-fork. This brake drum is made in one piece with a disc serving to form
a cover completely enclosing the brake. The brake-band is made of spring steel
lined with leather, or other suitable material.
Dated this 7th day of January 1897
ARTHUR SYDENHAM.
WM. THOS. SHAW.
66
Improvements in Brakes suitable for Velocipedes."
We, ARTHUR SYDENHAM, Engineer, and WILLIAM THOMAS SHAW, Chairman, of
the Crypto Works Company Limited, both of 29 Clerkenwell Road in the
City of 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 adapt to the rear wheel the brake described in
the specification of a Patent granted to John Gardner No. 16043 of 1893.
To an ordinary rear hub Figure 1, we screw outside (Figures 3 and 3¹) the bail
bearing on the chain side a disc D which we call the driving disc. This disc has

page_text: two segmental bosses or projections P and P₁ upon it near the periphery and at
the opposite ends of a diameter, which pass into slots S in the web of the chain
wheel C (Figures 2 and 2¹) as hereinafter described.
One of the projections Pi on the driving disc D is suitably formed to receive a
loop L at one end of the brake band K (Figure 5), the other end of the band L¹
being fixed to the inside of the rim of the chain wheel C. A lock nut N screwed
on to the outside end of the ball bearing serves to keep the driving disc D in
position. The chain wheel C is slipped on over the driving disc D the projections
on the latter passing through the slots in the chain wheel C. These slots are of
greater length than the projections upon the driving disc, so that the driving
wheel is free to move relatively to the disc.
Inside the brake strap K is a drum M (Figures 4, 4¹) screwed upon the
spindle E and held fast and prevented from rotating by a boss M¹ upon its outside
surface, which is held by the frame-fork. This brake drum is made in one piece
with a disc M² serving to form a cover completely enclosing the brake. The
brake-band is made of spring steel lined with leather, or other suitable material.
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:-
1. The adaptation of brakes operated by back pedalling to axles other than the
pedal axle substantially as described.
2. The combination of a disc fixed to the hub, a chain wheel loose on the hub,
projections on the disc entering slots in the chain wheel, a drum carried by the
fork and a brake strap having one end fixed to the disc and the other to the chain
wheel.
3. Brakes substantially as described and shown in the drawings.
ARTHUR SYDENHAM.
WM. THOS. SHAW.