An Improved Method of Brake Construction and Application in respect to the Wheels of Velocipedes, Motor Cycles, and like Conveyances.
Year: 1898

page_text: Date of Application, 3rd Jan., 1898
Complete Specification Left, 1st Oct., 1898-Accepted, 31st Dec.,
1898
PROVISIONAL SITIFICATION.
An Improved Method of Brake Construction and Application in
respect to the Wheels of Velocipedes, Motor Cycles, and like
Conveyances.
We, THOMAS HENRY FROST, of 3, Ellerslie Road, Loats Road, Brixton, S.W.,
in the Parish of Lambeth, Cycle Engineer, and EDMOND THOMAS WAKEFIELD,
of 42, Olney Street, Camberwell Gate, S.E., in the Parish of St. Mary's, Newington,
Clerk, do hereby declare the nature of this invention to be as follows:
According to this invention the brake, which possesses combined rim and tyre
action, is applied by downward pressure, preferably from a lever attached to the
handlebar, its centre plunger, to which is fitted a suitably shaped shoe, protected
on the face by rubber, leather, or some equally approved substance or material,
acting upon the surface of the tyre, and applying in it's descent, by means of side
levers, similarly equipped with shaped and protected shoes, a simultaneous brake
action upon the rim of the wheel at either side.
According to this invention the brake is constructed in either of the following
manners:
(A.) In the first place the centre plunger, the shoe of which acts upon the tyre,
is passed in the usual manner through the front fork crown boss; a perpendicular
tubular distance piece is then slipped over the stem of the said plunger resting at
it's base upon the fork crown boss and supporting in turn a horizontal attach-
ment, said attachment carrying by means of jointed ends two side levers, which
levers provide brake action to the rim of the wheel at their curved lower extremities.
Keeping the said attachment in position, and mounted immediately above it, is
placed a coiled spring, such spring being regulated by a small collar fitted to the
centre plunger stem. The brake at head is finished off in the usual manner by a
lever at handlebar and a jointed down rod, said rod telescoping into
stem of centre plunger and being made fast thereto by boss and bolt.
The centre plunger, at it's base, besides the ordinary shoe which acts
the tyre, bears in addition
upon
two curved arms, said armis being
fitted with bolts, or rollers, acting in slots at curved ends of side levers, or upon
curved edges of side levers, as preferred. Upon depression of the centre plunger,
the shoe of which acts upon the tyre, the arms affixed thereto engage simultaneously
with the side levers, said levers affording immediate brake action to the rim of the
wheel on either side at a point directly beneath the tyre brake. Small springs
attached to the fork sides are provided for conducting back to their original
positions the side levers when brake is not in use.
(B.) The centre plunger, the shoe of which acts upon the tyre, is passed in the
usual manner through the front fork crown boss and is controlled in the ordinary
way by a coil spring slipped immediately over it's stem, said spring being regulated
by a small collar fitted to the plunger stem. The lever at handlebar and the
jointed down rod telescoping into plunger stem are also of the usual form of con-

page_text: struction. The rim brake is supplied by means of cranked side levers affixed at
their upper extremities to the ends of a horizontal attachment made fast to the
centre plunger immediately above it's shoe and below the fork crown boss. Pro-
jecting from the front of the fork crown at either side are attached suitable arms,
placed at the required angle, from the ends of which the cranked side levers at
their bends obtain their necessary suspension. Upon depression of the centre
plunger or tyre brake, with it's attendant horizontal attachment, the upper or rear
ends of the cranked levers are likewise depressed, and as a result the lower or front
ends of the said levers, to which are fitted suitably shaped and protected shoes,
are simultaneously raised and brought against the rim of the wheel on either side
at a point in advance of the centre plunger tyre brake.
(C.) The centre plunger or tyre brake, and it's attendant fittings, are constructed
in the same manner as already shown in specification. marked B. The rim brake
is supplied by means of levers attached to the front fork sides and placed at a
suitable distance below the front fork crown. Affixed to the centre plunger
immediately above it's shoe and beneath the fork crown boss, is a metal fork piece,
to the lower extremities of which the top or front ends of the before mentioned
levers are connected. Upon depression of the centre plunger or tyre brake, and it's
attendant forked attachment, the top or front ends of the said fevers are likewise
depressed and their lower or rear ends, to which are mounted suitably shaped and
protected shoes, simultaneously raised and brought into contact with the rim of the
wheel on either side at a point behind the front fork crown and at the rear of the
centre plunger tyre brake.
This combined tyre and rim brake, when constructed in the varied forms herein
described, is calculated to act upon the front wheel, but it can when so preferred,
be applied to the back wheel, with suitable constructional variation, in each instance
it's actuation being governed from the steering handlebar.
We claim for this invention:
1. A more equal distribution of strain upon the wheel and tyre than is provided by
existing brakes.
2. Increase of power afforded by the combined tyre and rim actions.
3. Absolute immunity from danger, insomuch as should the tyre become deflated
at a critical moment and thus render the tyre brake useless, the rim brake is still
in action and by itself is sufficiently powerful to bring the wheel to a standstill.
4. It's applicability to all existing plunger brakes.
Dated this 3rd day of January 1898.
THOMAS HENRY FROST.
EDMOND THOMAS WAKEFIELD.
COMPLETE SPECIFICATION.
An Improved Method of Brake Construction and Application in 4
respect to the Wheels of Velocipedes, Motor Cycles, and like
Conveyances.
We, THOMAS HENRY FROST, of 3, Ellerslie Road, Loats Road, Brixton, S.W.,
in the Parish of Lambeth, Cycle Engineer, and EDMOND THOMAS WAKEFIELD,
of 32, Hillingdon Street, late of 42, Olney Street, Camberwell Gate, S.E., in the 4
Parish of St. Mary's, Newington, Clerk, do hereby declare the nature of this inven-
tion 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 an improved method of brake construction and

page_text: application in respect to the wheels of velocipedes, motor
conveyances.
cycles, auu
According to this invention the brake, which possesses combined rim and tyre
action, is applied by downward pressure, preferably from a lever attached to the
handlebar, its centre plunger, to which is fitted a suitably shaped shoe protected
on the face by rubber, leather, or some equally approved substance or material,
acting upon the surface of the tyre and applying in its descent, by means of side
levers, similarly equipped with shaped and protected shoes, a simultaneous brake
action upon the rim of the wheel at either side.
In the accompanying drawings which illustrate this invention
Fig. 1 is a front view and
Fig. 2 is a side view of our invention constructed according to specification
marked "A."
Fig. 3 is a front view and
Fig. 4 is a side view of our invention constructed according to specification
marked "B."
Fig. 5, is a front view and
Fig. 6 is a side view of our invention constructed according to specification
marked "C."
According to this invention the brake is constructed in either of the following
manners:-
("A.") In the first place the centre plunger A, the shoe, a, of which acts upon the
tyre, O, is passed in the usual manner through the front fork crown boss, B, said
boss being affixed to fork crown by means of small bolts, b, b, a perpendicular
tubular distance piece, C, is then slipped over the stem of the said plunger, A,
resting at its base upon the fork crown boss, B, and supporting in turn a horizontal
attachment, D, said attachment carrying by means of jointed ends, d, d, two side
levers, E, E, which levers provide brake action to the rim, P, of the wheel at their
curved lower extremities, E, E.
"
11,
"
Keeping the said attachment in position, and mounted immediately above it,
is placed a coil spring, G, such spring being regulated by a small collar, H, fitted
to the centre plunger stem, A, by small screw, h. The brake at head is finished off
in the usual manner by a lever, I, at handlebar and a jointed down rod, J, said rod
telescoping into stem of centre plunger, A, and being made fast thereto by boss, K,
and bolt, . The centre plunger, A, at its base, besides the ordinary shoe,
which acts upon the tyre, 0, bears in addition two curved arms, L, L, said arms
being fitted with bolts, M, M, or rollers, M, M, acting in slots, N, N, at curved
ends of side levers, or upon curved edges of side levers, as preferred. Upon depres-
sion of the centre plunger, A, the shoe, "a," of which acts upon the tyre, 0, the
arms, L, L, affixed thereto engage simultaneously with the side levers, E, E, the
shoes F, F, affixed to ends of said levers affording immediate brake action to the
rim, P, P, of the wheel on either side, at a point directly beneath the tyre
brake, (A, a.)
("B"). The centre plunger, A, the shoe, "a," of which acts upon the tyre, M,
is passed in the usual manner through the front fork crown boss, B, and is con-
trolled in the ordinary way by a coil spring, C, slipped immediately over its stem,
said spring being regulated by a small collar, D, fitted to the plunger stem and
held fast thereto by small screw, d. The lever, E, at handlebar and the jointed
down rod, F, telescoping into plunger stem, A, and fixed securely thereto by
boss, G, and, bolt, g, are also of the usual form of construction. The rim brake is
supplied by means of cranked side levers, H, H, attached at their upper extremities
by means of small bolts, i, i, to the ends of a horizontal attachment, I, made fast
a," and below
to the centre plunger, A, immediately above its shoe,
the fork crown boss, B. Projecting from the front of the fork crown, J,
at either side, and securely affixed thereto by means of bolts j, j
are attached suitable arms, K, K, placed at the required angle, from the ends of
which the cranked side levers, H, H, at their bends, by means of connecting
"

page_text: bolts, k, k, obtain their necessary suspension. Upon depression of the centre
plunger, A, or tyre brake, with its attendant horizontal attachment, I, the upper
or rear ends of the cranked levers, H, H, are likewise depressed, and as a result
the lower or front ends of the said levers, H, H, to which are fitted suitably shaped
and protected shoes, h, h, are simultaneously raised and brought against the
rim, L, L, of the wheel on either side at a point in advance of the centre
plunger (A, a,) tyre brake.
(""). The centre plunger, A, the shoe, "a," of which acts upon the tyre, M.
is passed in the usual manner through the front fork crown boss, B, said boss being
affixed to fork crown, J, by means of small bolts, j. The centre plunger, A, is
controlled in the ordinary way by a coil spring, C, slipped immediately over its
stem, said spring being regulated by a small collar, D, fitted to the plunger stem
and held fast thereto by small screw, d. The lever, E, at handlebar, and the
jointed down rod, F, telescoping into plunger stem A, and fixed securely thereto
by boss, G, and bolt, g, are also of the usual form of construction. The rim brake
is supplied by means of levers H, H, attached by clips, I, I, and bolts, i, i, to the
front fork sides K, K, and placed at a suitable distance below the front fork
crown, J.
Affixed to the centre plunger, A, immediately above its shoe, "a," and
beneath the fork crown boss, B, is a metal fork piece, L, L, to the lower extremities
of which the top or front ends of the before mentioned levers, H, H, are
nected by means of small bolts, 1, 1. Upon, depression of the centre plunger, A,
the shoe, a," of which acts upon the tyre, M, and its attendant forked attach-
ment, L, L, the top or front ends of the said levers, H, H, are likewise depressed
and their lower or rear ends, to which are mounted suitably shaped and protected
shoes, h, h, simultaneously raised and brought into contact with the rim, N, N,
of the wheel on either side at a point behind the front fork crown, J, and at the rear
of the centre plunger (A, a,) tyre brake.
<<
.
con-
This combined tyre and rim brake, when constructed in the varied forms, herein
described, is calculated to act upon the front wheel, but it can, when so pre-
ferred, be applied to the back wheel, with suitable constructional variation, in each
instance its actuation being governed from the steering handlebar.
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) An improved method of brake construction and application in respect to the
wheels of velocipedes, motor cycles and like conveyances, having for its object the
joint or double purpose of providing brake action to the tyre of the wheel and the
rim of the wheel at one and the same time.
(2) In a brake for velocipedes, motor cycles and like conveyances, the combina-
tion of parts as severally set forth and described in specifications marked A, B, & C,
herein and accompanying drawings, the three points of contact, viz., surface of
tyre and either edge of rim being equally opposed to, or in counteraction with,
each other, thus creating an equalisation of pressure or strain upon the wheel and
fork piece supporting the same.
(3) In a brake for velocipedes, motor cycles and like conveyances, the combination
of parts consisting essentially of a centre plunger tyre brake constructed and
formed in conjunction with side levers intended and adapted to act upon the wheel
rim, as severally set forth and described in specifications marked A, B, & C, herein
and accompanying drawings.
(4) A combination tyre and rim brake for velocipedes, motor cycles and like
conveyances, actuated by one applied movement, arranged and adapted
in the various manners herein described and set forth in specifications
marked A, B, & C, and accompanying drawings, and 80 constructed
as at any time to be capable of joint or individual brake action should
either its tyre portion or rim portion be temporarily incapacitated either by adverse
conditions of the tyre, of the rim, or from other accidental causes.

page_text: (5) In a brake for velocipedes, motor cycles and like conveyances the com-
bination of parts severally set forth and described in specifications marked A, B,
& C, herein and accompanying drawings, for applicability to all existing plunger
brakes.
Dated this Fourteenth day of December 1898.
THOMAS HENRY FROST.
EDMOND THOMAS WAKEFIELD.