Improvements in Brake Work for Cycles.
Year: 1898

page_text: Improvements in Brake Work for Cycles.
HENRY PATTMAN TRUEMAN, of 51, Havelock Road, Handsworth, near Birming-
ham, in the County of Warwick, Engineer, and JOHN SCRIVENS, of 57, Cuthbert
Road, Birmingham, aforesaid, Foreman Mechanic, do hereby declare the nature
of this invention to be as follows:-
This invention relates to an improved set of brake work for cycles, and consists
of improved details of construction, together with the arrangement of the various
parts forming a detachable set of plunger brake work.
A set of detachable brake work according to this invention comprises (A), a
handle bar clip of special formation, with attached spring, and fulcrum screw.
(B), a brake lever bent to suit the form of handle bar to be used with the same.
(C). A plunger rod head of special shape with joint pin or screw. (D). A
plunger rod clamp adapted to engage with both the plunger rod, and with the
brake spoon tube.
According to this invention, the handle bar clip is formed of two semi-circular
pieces, having projecting interlocking jaws on one side, and lugs on the other.
A single screw is passed through the lugs, thus clamping the two halves securely
to the handle bar. One of the picces forming the clip carries the fulcrum pin,
and also a spring adapted to return the lever to its normal position. The spring
is preferably a flat blade, but in some cases a coiled flat or wire spring of suitable
section is used in lieu of the flat spring.
The lever (B) has no feature of novelty in itself, but forms part of the novel
and useful combination which is the object of this present invention.
According to this invention, the plunger rod head (C) is in the form of a short
cylinder, the sides of which are or may be reduced by forming flats or facets
thereon. This said plunger rod (C) is or may be produced in capstan lathes. The
pivot hole is placed eccentrically, thus giving sufficient metal for the securз
attachment of the plunger rod. This head is preferably gashed to form a jaw.
The clamp (D) is also of short cylinder form, and is or may be produced in
capstan lathes. The binding screw is preferably formed integral with the body
of the clamp, but the said screw may in some cases be a separate piece. A counter-
bored hole is formed through the clamp at right angles to the axis of the binding
screw. On each side of, and parallel with the axis of the said binding screw are
formed two holes. Into these two holes are fitted short metal rods, adapted to
press upon the plunger rod at one end, and to be pressed at the other end inwards,
by means of the aforesaid binding screw. Holes are formed in the brake spoon
tube which serve both to connect the binding screw to the tube, and at the same
time to afford a passage for the aforesaid metal rods.
The aforesaid elements of the brake set 'A, C, D, are more easily and cheaply
produced than equivalent pieces as now constructed, and at the same time are
more exact to size and shape than similar pieces which have to be finished by

page_text: hand after leaving the tools. Any suitable kind of brake spoon or brake shoe
may be attached to the lower end of the brake spoon tube.
The brake lever (B) is of the usual kind, but forms one element of the novel
and useful combination which is the object of this present invention.
Dated this 27th day of September 1898.
Improvements in Drake
тог сустер.
HENRY PATTMAN TRUEMAN, of 51, Havelock Road, Handsworth, near Birming-
ham, in the County of Warwick, Engineer, and JoHN SCRIVENS, of 57, Cuthbert
Road, Birmingham, aforesaid, Foreman Mechanic, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:
This invention relates to an improved set of brake work for cycles, and consists
of improved details of construction, together with the arrangement of the various
parts forming a detachable set of plunger brake work.
A set of detachable brake work according to this invention comprises, A. A
handlebar clip of special formation, with attached spring and fulcrum screw.
B. A brake lever bent to suit the form of handlebar to be used with the same. C. A
plunger rod. head of special shape with joint pin or screw. D. A plunger rod
clamp adapted to engage with both the plunger rod and with the brake spoon
tube.
According to this invention, the handlebar clip is formed of two semi-circular
pieces, having projecting interlocking jaws on one side and lugs on the other
A single screw is passed through the lugs, thus clamping the two halves securely
to the handlebar. One of the pieces forming the clip carries the fulcrum pin,
and also a spring adapted to return the lever to its normal position. This spring
is preferably a flat blade, but in some cases a coiled flat or wire spring of suitablo
section is used in lieu of the flat spring.
The lever B, has no feature of novelty in itself, but forms part of the novel and
useful combination which is the object of this present invention.
According to this invention, the plunger rod head C, is in the form of a short
cylinder, the sides of which are or may be reduced by forming flats or facets
thereon. This said plunger rod C. is or may be produced in capstan lathes.
The pivot hole is placed eccentrically, thus giving sufficient metal for the
secure attachment of the plunger rod. This head is preferably gashed to form
a jaw.
The clamp D, is also of short cylinder form, and is or may be produced in
capstan lathes. The binding screw is preferably formed integral with the body
of the clamp, but the said screw may in some cases be a separate piece. A
counterbored hole is formed through the clamp at right angles to the axis of the
binding screws. On each side of, and parallel with the axis of the said binding
screws are formed two holes. Into these two holes are fitted short metal rods,
adapted to press upon the plunger rod at one end, and to be pressed at the other
end inwards by means of the aforesaid binding screw. Holes are formed in the
brake spoon tube which serve both to connect the binding screw to the tube, and
at the same time to afford a passage for the aforesaid metal rods.
The aforesaid elements of the brake set A, C, D, are more easily and cheaply
produced than equivalent pieces as now constructed, and at the same time are

page_text: more exact to size and shape than similar pieces which have to be finished by
hand after leaving the tools. Any suitable kind of brake spoon or brake shoe
may be attached to the lower end of the brake spoon tube.
The brake lever B, is of the usual kind, but forms one element of the novel
and useful combination which is the object of this present invention.
In the accompanying drawings, similar letters and figures refer to similar parts.
The novel parts are shown in full, and the parts which are adapted for use with
same are shown in dotted lines.
A, Fig. 1, is a front elevation. A, Fig. 2, is a side elevation, and A Fig. 3
is a plan view of the handlebar clip. In A, Fig. 2 the main body piece is
marked 1, and the clip piece is marked 2. 3 is the jaw of the clip piece, which
overlaps and engages with the lug 4 of the main body 1. 5 is the clamping
screw, and 6 is the fulcrum screw of the brake lever B."
Fig. 4, is a side elevation, Fig. 5, is a front elevation, and Fig. 6, is a plan of
the plunger rod head C. 7 is the plunger rod shown fixed to the head C.
Fig. 8 is a front elevation. Fig. 9, is a side elevation partly in section, and
Fig. 7 is a plan view of the plunger rod clamp D. 12 is the binding screw.
8 and 9 are the two holes parallel with the axis of the binding screw. 10 and 11
are the two short metal rods fixed in the washer 13, which washer is pressed
inwards by the nut 14.
E is the brake spoon tube having holes in it opposite 8 and 9 Fig. 9, to allow
the metal rods 10 and 11 to pass through and press upon the plunger rod 7.
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. A handlebar clip consisting of the body 1, having lugs 4, in combination
with the clip piece 2, having jaws 3, 3, adapted to engage with the lugs 44,
together with a pinch screw 5, all arranged to be fixed to the handlebar of a
cycle, substantially as described and illustrated.
2nd. A plunger rod head formed as C, Figs. 4, 5 and 6, with or without the
plunger rod 7.
3rd. The clamp for connecting the plunger rod and brake tube consisting
of (A) the body, D, Figs. 7, 8 and 9, (B) the washer 13, with short metal
rods 10 and 11, (C.), the nut 14, all arranged and operat with the brake tube E
and plunger rod 7, substantially as described and illustrated.
4th. The entire brake set shown in the, drawings, using one or more of the
pieces A, C, D, or any mere mechanical equivalent thereof.
Dated this 27th day of June 1899.
HENRY PATTMAN TRUEMAN.
JOHN SCRIVENS.