Improvements connected with Cycle Brakes, and in the Method of Operating them.
Year: 1896

page_text: Date of Application, 8th Dec., 1896
Complete Specification Left, 15th Apr., 1897-Accepted, 29th May, 1897
PROVISIONAL SPECIFICATION.
Improvements connected with Cycle Brakes, and in the Method of
Operating them.
I, OSCAR BÜTTNER, of 24 Berliner Strasse, Leipzig, Germany, Cycle Components
Manufacturer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is certain improvements connected with what are
known as invisible brakes for cycles, the operation of which is effected by a turn of a
movable hand grip on the handle bar communicating motion by means of a flexible
rod and a crank or eccentric within the handle bar to the brake rod within the front
tube of the machine.
For the purpose of my invention, I employ a flexible rod within the handle bar, one
end of which at the middle portion has a crank or eccentric for detachable connection
to a vertical brake rod passing down through the front tube or steering post, the
brake being at its lower end pivoted to the front tube in such a manner that the brake
in its normal position closes the lower end of the tube.
The other end of the flexible rod is connected to a movable hand grip preferably by
a rivet passing through the end of the hand grip, which latter fits over and is secured
to the handle bar by a set screw passing through a slot in the bar so formed as to
permit of a rotative and end on motion of the hand grip when applying the brake.
A spring in the hand grip bears against the end of the handle bar in order to
withdraw the flexible rod and hold it in position.
The handle bar at the part joined by the steering post is angle slotted for the
passage and movement of the cranked brake rod.
1000
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Oscar Büttner.
Improvements connected with Cycle Brakes, and in the Method of
Operating them.
I, OSCAR BÜTTNER, of 24 Berliner Strasse, Leipzig, Germany, Cycle Components
Manufacturer, 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 certain improvements connected with what are
known as invisible brakes for cycles, the operation of which is effected by a turn of
a movable hand grip on the handle bar communicating motion by means of a flexible
rod and a crank or eccentric within the handle bar to the brake rod within the front
tube of the machine.
For the purpose of my invention and as I show in the annexed drawings,
Figures 1 to 7, I employ a flexible rod A within the handle bar B, one end of which
rod at the middle portion has a crank or eccentric C for detachable connection to a

page_text: vertical brake rod D passing down through the front tube E or steering post, the
brake F being at its lower end pivoted to the front tube E at G in such a manner
that the brake in its normal position closes or about closes the lower end of the
tube E.
The other end of the flexible rod A is connected to a movable hand grip H
preferably by a rivet I passing through or into the end of the hand grip II which
latter fits over and is secured to the handle bar B by a set screw J passing through a
bayonet like slot K in the bar so formed as to permit of a rotative and end on motion
of the hand grip H when applying the brake F.
A spring L in the hand grip H bears against the end of the handle bar B in order
to withdraw the flexible rod and hold it in position.
The handle bar at the part joined by the steering post is angle slotted for the
passage and movement of the cranked brake rod.
Thus far, the invention is apparent but the drawings show slight modifications,
according to Figure 1, a vertical section, the flexible rod A is a close curled helical
spring wire with one end secured to a plug a of the eccentric C and its other end
secured to a plug 6 of the hand grip closer I. The eccentric C in Figure 1 is of disc
shape, and the pin c of the rod D is simply locked into it but it may be secured in
any convenient manner and instead of an eccentric disc, a lever d, as at the section
Figure 2, can be fitted from the rear of the handle bar B, or from the front of said
bar, as at the section Figure 3, and instead of a rod D being connected it may be a
leather strap D', as indicated at Figure 4, the strap D' being wrapped around the
plug e of the disc C, or otherwise. If the strap D to fitted within the tube E,
I arrange the brake F on one end of a balance lever e¹ from below the tube E but the
brake can be suspended from the lug, Figure 5, and supported from the rod D or
preferably from a tube g which is adjustable on the rod D and affixable by a
pinchscrew h.
The hand grip H has a partial rotation given to it when the brake F has to be
applied and the distance is governed by the length of the slot K (see Figure 6) in
the handle bar B, within which slot, the pin J is located, but by the arrangement
shown at Figure 7, the pin J is on the end of a flat plate spring j affixed to the
stem of the hand grip H to which in this case the flexible rod A is secured, the stein
plug being lengthened for the purpose and in a piece with the hand grip H.
M, M, represent a portion of the front forks of which N is the crown.
The flexible rod A is only the means of transferring the motion from the hand
grip H to the brake F through the intermediation of the rod D by the eccentric Cor
lever d, the spring L being then put into tension or compression for releasing the
brake when the twisting pressure of the rider's hand is removed.
According to Figure 7, have shown the plate spring as projecting in dotted
lines, a pressure on which will free the pin J from the slot K and enable the several
parts to be released.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The hereinbefore described means and appliances by which cycle brakes can be
operated from one of the hand grips as shown.
2. In combination, an operable hand grip H enclosed flexible rod A, enclosed
eccentric C (or its equivalent) connected to brake rod D and returnable by spring L
as and for the purposes set forth and arranged substantially as represented on the
anexed drawings.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Oscar Büttner.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Oscar Büttner.