Improved Means for Enlarging Pit Shafts.
Year: 1890

page_text: Date of Application, 21st Jan., 1890
Complete Specification Left. 16th Sept. 1890-Accented 6th Dec. 1800
PROVISIONAL SPECIFICATION.
Improved Means for Enlarging Pit Shafts.
WILLIAM HALL Pit Sinker 39 Albert Street Radcliffe near Manchester Lancashire
do hereby declare the nature of this invention to be as follows:-
A safety drum tube to be made of iron or steel or wood to be 6 inches less in cir-
cumference than the old pit shaft, 30 feet or upwards long hanging from 2 double
purchase winches. I get the strata from the back of the safety drum tube to the depth
of 3 or 4 feet then lower the safety drum tube 3 or 4 feet. To fill the refuse in kibble
or tub through hopper holes left in the top ring of the safety drum tube. To brick
up the new pit shaft with the same safety drum tube. As I rise with the bricking to
add 6 feet lengths of light safety drum tube, to the bottom of the safety drum tube.
Dated this 18th day of January 1890.
WILLIAM HALL.
COMPLETE SPECIFICATION.
Improved Means for Enlarging Pit Shafts.
WILLIAM HALL Pit Sinker 39 Albert Street Radcliffe near Manchester Lancashire
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 :--
A safety drum tube to be made of iron or steel, to be 6 inches less in circumference
than the old pit shaft, 30 feet or upwards long hanging from 2 double purchase
winches. I get the strata from the back of the safety drum tube to the depth of 3 or
4 feet then lower the safety drum tube 3 or 4 feet.
To fill the refuse in kibble or tub through hopper holes left in the top ring of the
safety drum tube.
In the accompanying drawings:
Fig. 1. shews a sectional elevation of my apparatus in operation in a mine shaft, and
Fig. 2. shews a plan view of the same.
In Fig. 1. the left half section shews the excavating for the enlargement in
progress, and the right half section shews the arrangement for erection of the new
brick lining.
In both figures A is the safety drum tube of suitable length and not more than a
few inches smaller in diameter than the old shaft. It is suspended by the chains b b
of which there are preferably four and which are attached at the bank to winches by
which the drum tube can be raised or lowered at will.
The upper end of the tube is formed with a ring top a, leaving a large central hole
so as not to interfere with ventilation. Around this hole for security is fixed the
hand rail c. c. Any desirable number of shoots d d are provided-attached to the top
of the drum tube for the purpose of shooting the spoil through the holes d' left in
the top ring, into the kibbles B in which it is hoisted to bank.
For the purpose of erecting the brick lining I fix an annular stage e to the top of
the drum tube. It can be easily detached and removed and 1 prefer to fix it by
means of hooks g, taking over the top edge of the drum plates and passing through
holes for the purpose in the ring top. This annular stage can be in two or more
sections as found most convenient. The brick shaft lining is represented by f.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
I. The safety drum tube for suspension within a mine shaft forming a protection
Price I

page_text: for the excavators and having a large central hole substantially as and for the purposes
herein before described and illustrated in the accompanying drawings.
II. The shoots attached to the safety drum tube substantially as and for the purposes
bereinbefore described and illustrated in the accompanying drawings.
III. The detachable stage for use when erecting brick lining, substantially as
herein before described and illustrated in the accompanying drawings.
Dated this 3rd day of November 1890.
WILLIAM HALL.