Improvements in Vehicle Brakes.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Vehicle Brakes.
I, HENRY LOUIS FRED TREBERT, of No. 372, South Salina Street, in the City
of Syracuse, and State of New York, United States of America, Mechanic, do
hereby declare the nature of this invention to be as follows:-
The invention relates to improvements in brakes for vehicles, and particu-
larly velocipedes, and has for its object the production of a brake for the desired
purpose, which is especially simple in construction, and highly efficient in use;
and, to this end, the invention consists in the combination, construction and
arrangement of the component parts of a vehicle-brake.
This brake is designed to lock a driving member to a driven part, to permit
rotation of the driven part without effecting rotation of the driving member,
and to retard rotation of the driven part It is obvious, however, that the brake
need not be used for all of said purposes unless required.
Said brake consists essentially of a driven part, a friction-piece secured to
the driven part, a driving member, clutch-members between the driven part and
the driving member, engaging pieces secured to the driving member, a stationary
engaging part, and clutch-members between the driving member and the
stationary engaging part.
The driven part is usually the hub of a driving wheel of the vehicle; or a
sleeve adapted to be fixed to said hub. The periphery of the driven part is
generally formed with ratchet-shaped teeth or projections having their front
faces substantially radial and their outer faces inclined inwardly and rearwardly.
The friction-piece preferably consists of a ring which may be fixed to the
driven part in any desirable manner, as by screw-threads, and is usually arranged
at one side of the ratchet-shaped teeth or projections of the driven part and
provided with a suitable frictional engaging surface, as a fibre ring.
The driving member generally consists of a sprocket or other driving wheel
encircling the portion of the driven part provided with the ratchet-shaped teeth
or projections. The outer face of the driving member is suitably formed for
engaging a power-transmitting means, as a sprocket-chain, and the inner face
of said member is formed with an annular groove.
The clutch-members between the driven part and the driving member consist
of balls or rollers which are arranged in the groove in the inner face of the
driving member and are moved forwardly as said driving member is moved in
the same direction. As said clutch-members move forwardly, they roll on the
inclined outer faces of the ratchet-shaped teeth or projections of the driven part
and are forced outwardly, thus locking the driving member to said driven part.
It will be understood, however, that said. clutch-members are released as soon as
the driving member is moved backwardly slightly, and that the driven part is
then free to revolve without effecting revolution of the driving member. Said
clutch-members are generally held apart the desired distance and caused to move
simultaneously by a suitable separator, as a perforated ring, formed angular in

page_text: .cross-section. This separator may be returned to its normal position by a spring,
although said spring may be dispensed with, if desired.
The engaging pieces secured to the driving member are preferably fixed to
opposite side faces thereof. One of said, engaging pieces, consists of a friction-
face which engages the friction-piece secured to the driven part. The opposite
engaging piece is formed with ratchet-shaped teeth or projections having their
front faces formed substantially flat and their outer faces inclined rearwardly
toward the former engaging piece.
The stationary engaging part may consist of a disk suitably fixed to the frame
of the vehicle at one side of the driving member and having its face adjacent to
said driving member provided with an annular groove.
The clutch-members between the driving member and the stationary engaging
part consist of balls or rollers which are moved rearwardly as the driving
member is moved in the same direction. As the clutch-members move rear-
wardly, they roll on the inclined outer faces of the ratchet-shaped teeth or pro-
jections of the adjacent engaging piece and force said driving member laterally,
thus forcibly engaging the opposite engaging piece with the friction-piece and
retarding the rotation of the driven part.
Dated this 18th day of March 1800
HENRY LOUIS FRED TREBERT.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant:
improvements in Vehicle Brakes.
I, HENRY LOUIS FRED TREBERT, of No. 372, South Salina Street, in the City
of Syracuse, County of Onondaga, and State of New York, United States of
America, Mechanic, 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 improvements in brakes for vehicles, and particu-
larly velocipedes, and has for its object the production of a brake for the desired
purpose, which is especially simple in construction, and highly efficient in use;
and, to this end, the invention consists in the combination, construction and
arrangement of the component parts of a vehicle-brake.
In the drawings, Figure 1 is a longitudinal sectional view, partly in elevation,
of my vehicle-brake and adjacent parts of a vehicle.
Figures 2 and 3, are vertical sectional views, partly in elevation, taken,
respectively, on lines 2-2 and 3-3, Figure 1.
This brake is designed to lock a driving member to a driven member, to
permit rotation of the driven member without effecting rotation of the driving
member, and to retard rotation of the driven member. It is obvious, however,
that the brake need not be used for all of said purposes unless required.
Said brake consists essentially of a driven member A, a friction-piece a secured
to the driven member, a driving member 13, clutch-members Û between the
driven member, and the driving member, engaging pieces 661 secured to the
driving member, a stationary engaging part 1), and clutch-members E between.
the driving member and the stationary engaging part.
The driven member A is usually the hub of a driving wheel of the vehicle,
or a sleeve adapted to be fixed, to said hub. The periphery of the driven

page_text: member is generally formed with ratchet-shaped teeth or projections a¹ having.
their front faces substantially radial and their outer faces inclined inwardly and
rearwardly.
The friction-piece a preferably consists of a ring which may be fixed to the
driven member in any desirable manner, as by screw-threads, and is usually
arranged at one side of the ratchet-shaped teeth or projections a¹ of the driven
member and provided with a suitable frictional engaging surface, as a fibre
ring a².
The driving member B generally consists of a sprocket or other driving wheel
encircling the portion of the driven member A provided with ratchet-shaped
teeth or projections a¹. The outer face, or periphery, of the driving member is
suitably formed for engaging a power-transmitting means, as a sprocket-chain B₁
and the inner face of said member is formed with an annular groove b².
The clutch-members C between the driven member and the driving member
consist of balls or rollers which are arranged in the groove 62 in the inner face
of the driving member and are moved forwardly as said driving member is
moved in the same direction. As said clutch-members move forwardly, they roll
on the inclined outer faces of the ratchet-shaped teeth or projections a¹ of the
driven member and are forced outwardly, thus, locking the driving member to
said driven member. It will be understood, however, that said clutch-members
are released as soon as the driving member is moved backwardly slightly, and
that the driven member is then free to revolve without effecting revolution of
the driving member. Said clutch-members are generally held apart the desired
distance and caused to move simultaneously by a suitable separator, as a perfo-
rated ring c formed angular in cross-section. This separator may be returned
to its normal position by a spring c¹, although said spring may be dispensed
with, if desired.
The engaging pieces 66 secured to the driving member are preferably fixed
to opposite side faces thereof. One of said engaging pieces is formed with a
frictional engaging surface which engages the friction-piece a secured to the
driven member. The opposite engaging piece is provided with ratchet-shaped
teeth or projections 63 having their front faces formed substantially flat and
their outer faces inclined rearwardly toward the former engaging piece.
The stationary engaging part 1) may consist of a disk suitably fixed to the
frame of the vehicle at one side of the driving member and having its face
adjacent to said driving member provided with an annular groove (d.
The clutch-members E between the driving member and the stationary engag-
ing part consist of balls or rollers which are moved rearwardly as the driving
member is moved in the same direction. As the clutch-members E move rear-
wardly they roll on the inclined outer faces of the ratchet-shaped teeth or pro-
jections of the adjacent engaging piece and force said driving member
laterally, thus forcibly engaging the opposite engaging piece b with the fric-
tion-piece a and retarding the rotation of the driven member. Said clutch-
members may be moved simultaneously by a ring e in the same manner that
the clutch-members C are moved simultaneously by the ring c.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1-In a brake, the combination of driven and driving members, the driven
member being provided with a frictional engaging surface at one side of the
driving member, and the driving member having its side adjacent to said fric-
tional engaging surface formed with a frictional engaging surface and its other
side formed with teeth or projections, said driven and driving members being
provided with substantially concentric faces, portions of one of said faces being
inclined toward the other, a non-revoluble engaging part arranged adjacent to
the teeth or projections of the driving member, clutch-members between said
'

page_text: substantially concentric faces of the driven and driving member, and additional
clutch-members between the driving member and the non-revoluble engaging
part, substantially as and for the purpose described.
2 In a brake, the combination of driven and driving members, the driven
member being provided with a frictional engaging surface at one side of the
driving member, and the driving member having its side adjacent to said frie-
tional engaging surface formed with a frictional engaging surface and its other
side formed with teeth or projections, said driven and driving members being
provided with substantially concentric faces, portions of one of said faces being
inclined toward the other, a non-revoluble engaging part arranged adjacent to
the teeth or projections of the driving member, clutch-members between said
substantially concentric faces of the driven and driving members, a separator
for engaging said clutch-members and moving the same simultaneously, and
additional clutch-members between the driving member and the non-revoluble
engaging part, substantially as and for the purpose specified.
3In a brake, the combination of a driven member provided with peripheral
ratchet-shaped teeth or projections, a friction-piece fixed to the driven member at
one side of the ratchet-shaped teeth or projections, a driving member encircling
the portion of the driven member provided with the ratchet-shaped teeth or pro-
jections and having its inner face formed with an annular groove, engaging pieces
fixed to the opposite sides of the driving member, one of said engaging pieces
being engaged with the friction-piece fixed to the driven member, and the oppo-
site engaging-piece being formed with ratchet-shaped teeth or projections, a non-
revoluble engaging part arranged adjacent to the teeth or projections on said
opposite engaging-piece and having its face adjacent to the driving member pro-
vided with an annular groove, balls movable in the groove in the inner face of
'the driving member between the ratchet-shaped teeth or projections of the driven
member and the inner face of the driving member, and balls movable in the
groove in the non-revoluble engaging part between the ratchet-shaped teeth or
projections of said opposite engaging piece and the adjacent face of said non-
revoluble engaging part, substantially as and for the purpose set forth.
Dated this 1st day of February 1900.
D. YOUNG. & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.