Improved Means for Preventing the Overwinding of Hoisting Cages in Mine Shafts
Year: 1892

page_text: Date of Application, 9th Jan., 1892
Complete Specification Left, 16th Mar., 1892-Accepted, 16th Apr., 1892
PROVISIONAL SPECIFICATION.
Improved Means for Preventing the Overwinding of Hoisting Cages
in Mine Shafts.
1, JOB JAMES HILL of Leek New Road, Milton, in the Parish of Norton-in-
the-Moors in the County of Stafford, Innkeeper, do hereby declare the nature of
this invention to be as follows:
This invention for improved means for preventing the overwinding of hoisting
cages in mine shafts has for its object to automatically stop the winding engine
when the hoisting cage is elevated beyond a certain predetermined position, and
consists essentially in placing in the path of the traverse of the cage a projecting
arm or other obstruction connected to the brake mechanism by chains or other
connections in such a manner, that, on the displacement of the said projecting
arm or obstruction by the ascending cage the brake is automatically applied to the
engine.
Dated this 9th day of January 1892.
WHEATLEY & MACKENZIE,
40, Chancery Lane, W.C., Agents.
COMPLETE SPECIFICATION.
Improved Means for Preventing the Overwinding of Hoisting Cages
in Mine Shafts.
1, JOB JAMES HILL of Leck New Road, Milton, in the Parish of Norton in
the Moors in the County of Stafford, Innkeeper, 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 :-
This invention for improved means for preventing the overwinding of hoisting
cages in mine shafts has for its object to automatically stop the winding engine
when the hoisting cage is elevated beyond a certain predetermined position, and
consists essentially in placing in the path of the traverse of the cage a projecting
arm or other obstruction connected to the brake mechanism and steam valve by
chains or other connections in such a manner, that, on the displacement of the said
projecting arm or obstruction by the ascending cage the brake is automatically
applied to the engine and the steam shut off.
The accompanying illustrative drawing represents an elevation of an apparatus
constructed according to this invention.
The pit cage a works in suitable vertical guides and is connected to the drum
of the winding engine by chains c and d in the usual manner.
C
At a predetermined
height in the shaft, depending upon the point in the traverse of the cage where it
is desired to stop, such as at the pit's mouth, is placed a sliding bar e. sliding in
suitable guides f, one end being connected by a chain g or its equivalent to the
brake gear and steam valve, while the arm h projects into the path of the cage, so
that, when the cage has reached the predetermined height it strikes the arm h and
carries the sliding bar e upward, thereby operating through the connecting chain g
the brake gear, and steam valve, and bringing the winding engine and the cage a
to rest.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is
1. In apparatus for preventing overwinding in mines; the employment of a
sliding bar or its equivalent connected to and operating the brake mechanism
and steam valve of the winding engine, and having an arm projecting into the
path of the pit cage so that, when the latter has reached a predetermined height
it engages with and carries forward the said sliding bar and so operates the
brake mechanism and steam valve to stop the winding engine substantially as
described.
2. The arrangement and construction of apparatus for preventing overwinding
in mines substantially as described with reference to the drawing.
Dated this 14th day of March 1892.
WHEATLEY & MACKENZIE,
40, Chancery Lane, W.C., Agents.