An Improvement in Brakes.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
An Improvement in Brakes.
I, SAMUEL BEACH COCHRANE of "Ivanhoe Lodge," 2 Ivanhoe Road Denmark Park
Camberwell in the County of Surrey, Mechanician, do hereby declare the nature of
this invention to be as follows:-
This invention relates to a combination brake--that is to say-a brake which acts
preferably upon the tyre or periphery of a wheel by pressure and which is held in
check by a band or a friction-block; the wheel to be checked not being acted upon
directly by the band or block but by a secondary wheel or secondary wheels, the
action of such brake being obtained by a lever or levers.
This invention is applicable to the wheels of vehicles of every kind and also to all
kinds of machinery in or upon which brakes are used. I am aware that friction-blocks
bands and rollers have been used separately as brakes, but not conjointly.
The advantage gained is a uniform, steady and reliable brake and brake-action, with
less wear and tear upon the wheel and upon the brake than result from any other
form of brake.
I do not confine my invention to action on the tyre or periphery of a wheel, as a
friction-surface may be more convenient upon another part of wheel; and, therefore,
I also claim the application to the sides of wheels of a specially-prepared surface for
the action of the above described brake.
SAMUEL BEACH COCHRANE.
I, SAMUEL BEACH COCHRANE of "Ivanhoe Lodge" 2 Ivanhoe Road, Denmark Park,
Camberwell, in the County of Surrey 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 :-
This invention relates to a combination brake consisting firstly of a brake in the
form of a roller which exerts retarding action upon a wheel or pulley by pressure and
in case of a cycle wheel or the like by preference upon the tyre or rim of said
wheel, and secondly of a band or a friction block which serves to check the roller in its
rotation by pressing upon a small pulley fixed on or connected to the spindle of the
roller, said pressure being obtained by a lever or lever gear.

page_text: This invention is applicable to vehicle wheels of every kind and also to wheels or
pulleys in machinery of every kind requiring brakes. The braking roller may as
stated be applied upon the wheel tyre, or wheel rin or upon the periphery of the
pulley or upon any other part of the wheel or pulley where a suitable surface is found
or can be provided for the brake roller to act upon.
Fig. 1 of the accompanying drawings is a front view and Fig. 2 a side view of so
much of a bicycle steering handle bar and parts connected therewith as will serve to
illustrate a mode of applying my invention to an ordinary bicycle with roller brake
acting upon the rubber tyre of the front or steering wheel. A is the ordinary brake
rod with forked part B carrying the rubber brake roller C. Upon the spindle D of
the latter I fix a small pulley E. F is a band say of clock spring steel which serves to
check the rotation of the roller C. This band is at one end attached to the handle bar
H by means of a screw G and at the other end to the ordinary brake lever I while
passing over a guiding or directing pulley K which is carried in a bracket L that is
fixed to the handle bar H. When the handle end of the brake lever I is gripped in
the usual manner its opposite end depresses the rod A and thereby presses the brake
roller Cagainst the tyre, so that it is caused to rotate by frictional contact therewith.
But this is cheeked by the hand F acting on the pulley E tending to hinder the
roller C from rotating. To adjust the band according to the desired height of handle
bar above the ground I form the end of the band with a long slot for the screw ( to
pass through.
Fig. 3 shews a modified arrangement where both ends of the band F are fixed to
the handle bar II by screws G passing through slots in the band.
Fig. 4 shews the application of a friction block F1 against the pulley E; this block
is on the end of a rod F which is jointed to the brake lever I and should be constructed
in two parts joined by a nut sleeve joint with right and left hand screw thread in
order to give facility for length adjustment.
Figs. 5 and 6 shew another form of combined roller and block brake which needs
no adjusting where the roller spindle D has a pulley E at each end, the spindle being
mounted in bearings of oblong form in the fork B so as to give play for the spindle to
rise in the bearings when the brake lever is gripped and to allow the pulleys E to bear
against the correspondingly hollowed out projections B' on the brake rod fork A. The
Illeys E may if desired be arranged inside the fork the latter being hollowed out for
the pulleys to bear against.
The roller C and the pulleys E may be of box wood or hard rubber, and the hollowed
out parts against which the pulleys bear may be lined with similar material.
For ordinary vehicles one end of the band would be attached to some part of the
vehicle body or frame and the other end directly or indirectly to the brake operating
lever after passing over a pulley.
The advantages gained by my invention are a uniform steady and reliable action
and less wear and tear upon the brake roller and upon the wheel or pulley against
which it acts, than with the ordinary roller brake.
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 application and use in combination with a brake roller and lever or other
gear for applying it to the wheel or pulley to be braked, of a block or band adapted
to retard the rotation of the brake roller when the latter is pressed against the wheel
or pulley, substantially as set forth.
2. The combination of a brake roller a pulley on its spindle, lever or other gear for
applying it to the wheel, and a retarding band passing round the pulley and attached
at one end to a relatively fixed or stationary part of the machine and at the other end
to the lever or other gear, substantially as and for the purpose set forth.
3. The combination of a brake roller, a pulley on its spindle, lever or other gear for
applying it to the wheel, and a rod with retarding block adapted to be pressed upon

page_text: the pulley, its rod being connected to the lever or other gear substantially as and for
the purpose set forth.
4. The constructions of combination brake described and shewn.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.