IMPROVEMENTS IN "BRAKES FOR BICYCLES
Year: 1884

page_text: COMPLETE SPECIFICATION.
We GEORGE SHRINER HULL and CHARLES SHAEFFER HULL, both of Chambers-
burgh in the County of Franklin and State of Pennsylvania one of the United
States of America, Gentleman, do hereby declaro the nature of our Invention for.
IMPROVEMENTS IN "BRAKES FOR BICYCLES" and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement
This Invention has relation to the brakes of bicycles, and it consists in the
construction and novel arrangement of devices as hereinafter set forth and pointed
out in the appended claims.
In the accompanying Drawings
A designates the handle bar of the bicycle to which this Invention is shown as
applied and B is the brake handle.
In the construction illustrated E represents a lock fastened to the handle bar A
and Fa lock bar which is connected to the brake handle. The arrangement
however may be reversed by attaching the lock to the brake handle and the lock
bar to the main or guiding handle of the machine. The lock bar F is toothed and
works in a passage g of the lock. The lock is provided with a locking bolt h
adapted to fit the intervals between the teeth of the lock bar aud said locking bolt
is held in place by a spring . In order to release the lock bar a thumb catch lis
provided, whereby the locking bolt can be moved back. By depressing the catch
to engage the angular slot J at m the locking bolt is held back.
The locking bolt can be locked open, or in its engaged position by various
devices well known to those skilled in lock-making. In the construction shown
the lock-bar F which may be either round or prismatic is made straight and is
pivoted to an attachment piece P which is secured to the brake handle. Or the
lock-bar may be directly pivoted or attached to the brake handle. When the
locking bar is curved in accordance with the arc of movement of the brake handle
a pivot connection will not be necessary and the lock bar may be rigidly attached
to the brake handle.
The purpose of the Invention is to provide convenient means for holding the
brake handle in any desired position to release it instantly or to lock it, securing
the brakes at any desired pressure upon the wheel. Also to render the front wheel
or driving wheel immovable, by locking the brakes with a firm pressure thereon.

page_text: t
When by means of a key R, the arm a of the tumbler 8 of the lock is turned
down upon the spring t the slide v follows, roleasing the bolt h. The arm a of the
tumbler engages the slide vand holds it in position disengaged from the locking
bolt h. This locking bolt may then be pushed back by means of the thumb catch
working in the slot J and held there by engagement with said slot as herein before
described. By means of the key, the spring & may be released allowing the slido v
to engage a notch of the locking bolt. When the locking bolt is free to move the
device is ready for use as a brake holder. By pressing the brake handle to attain
the desired pressure on the wheel the bar F is caused to move in the passage g and
will be held in position to secure this pressure by the locking bolt h. This
pressure can be instantly released by pushing back the thumb catch. When it is
desired to lock the wheel, the brake handle is pressed until the wheel is firmly held
by the brake.
The spring t is then released by means of the key and moves the slide into
engagement with the locking bolt h holding the lock bar in position and the brake
handle locked in position close to the main handle. In this position the fastening
screw of the lock bar is guarded by the juxtaposition of the brake handle so that
said lock bar cannot be removed.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, wo declare that what
we claim is
1. The combination with the brake handle of a bicycle of a locking attachment
substantially as specified.
2. The combination with the brake handle and the main handle, of the toothed
locking-bar and the lock having a passage in which said locking bar works
substantiatly as specified.
3. The combination with the toothed locking bar, of the lock having a passage
for said bar, a locking bolt and spring operating the same, spring slide to engage
said bolt and a tumbler substantially as specified.
4. The combination with the locking bar of the spring bolt, its thumb catch and
the angular holding slot of the lock substantially as specified.
5. The combination with the main handle and the brake handle, of the lock and
the lock-bar having its fastenings guarded by one of the handles when drawn up
in juxtaposition thereto in the locked position substantially as specified.
Dated the Tiftonth dass a 1001