AN IMPROVED BRAKE
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said William Walton at the Office
of the Commissioners of Patents on the 3rd August 1881.
WILLIAM WALTON, of Harrytown Hall, Romiley, in the County of Chester.
"AN IMPROVED BRAKE."
The object of my Invention is to obtain a brake which shall always give a
uniform resistance. I fix on a shaft a hollow drum, inside which and near the
periphery I place a number of buckets, somewhat similar to the buckets of water-
wheels or turbines. These buckets extend a suitable distance toward the centre of
the drum, and in the drum I place shot or bullets in sufficient quantity to give the
desired resistance. The buckets are so formed as to retain the shot for a certain
portion of a revolution, when the drum rotates, and the shot runs out of the
buckets when the buckets are at or near the highest point they attain in revolving,
and drops to the bottom of the drum. The shot is again raised by the buckets as
the drum rotates. By increasing or decreasing the quantity of shot and the
diameter of the drum, almost any desired brake power may be obtained. Mercury
or any liquid may be used instead of shot.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Walton in the Great Seal Patent Office on the 30th
January 1882.
WILLIAM WALTON, of Harrytown Hall, Romiley, in the County of Chester.
"AN IMPROVED BRAKE."
The object of my Invention is to produce a brake applicable to the rotating
parts of machinery or apparatus which shall always give a uniform resistance. I fix
on a shaft a hollow drum, inside which and near the periphery I place a number of
buckets, somewhat similar to the buckets of waterwheels or turbines. These
buckets extend a suitable distance toward the centre of the drum, and in the drum
I place shot or bullets in sufficient quantity to give the desired resistance. The
buckets are so formed as to retain the shot for a certain portion of a revolution,
when the drum rotates, and the shot runs out of the buckets when the buckets are
at or near the highest point they attain in revolving, and drops to the bottom of
the drum. The shot is again raised by the buckets as the drum rotates. By
increasing or decreasing the quantity of shot and the diameter of the drum, almost
any desired brake power may be obtained. Mercury or any suitable liquid may
be used instead of shot.
And in order that my Invention may be fully understood and readily carried
into effect, I will describe the accompanying Sheet of Drawings, reference being
had to the figures and letters marked thereon.
Fig. 1 is an elevation of my improved brake, Fig. 2 is a section of the same
parallel with its axis, and Fig. 3 is a transverse section of the brake.
a is the drum, in this case made of sheet metal; b is a circular disc, which forms
one end of the drum; c is an annular disc, which forms the outer end of the drum.
The opening in the middle of this disc allows the shot to be placed in or taken
from the drum. The buckets or ladles are marked d. The disc b is provided at
its centre with a boss b', which fits on and is secured to the shaft to which the
brake is to be applied.
My improved brake is particularly applicable to the rotating parts of machinery
or apparatus wherein a uniform drag is required, as the brake power is obtained
by gravitation without other pressure or friction.
Having stated the nature of my Invention, and described the manner of
performing the same,
I declare that I claim,—
The improved brake, substantially as and for the purpose shown and described.
In witness whereof, I, the said William Walton, have hereunto set my hand
and seal, this Twenty seventh day of January, One thousand eight hundred
and eighty two.
WILLIAM WALTON. (L.S.)