Improved Mechanism for Withdrawing Mine Props or the like.
Year: 1899

page_text: Date of Application, 9th Sept.,
1899
Is
And lon
1000 Accented 17th Feb
1900
PROVISIONAL SPECIFICATION.
Improved Mechanism for Withdrawing Mine Props or the like.
HENRY JOHN TAYLOR, 90, Broad Oak Road, Parr, St. Helens, Lancashire,
Mechanic and Colliery Manager, do hereby declare the nature of this invention
to be as follows:-
A rod of metal, any length required, as a guide say 2 feet long, by 1 inch in
diameter, is threaded with a screw about three parts of the way up, at this part
there is left on the rod, a boss any shape desired, as a guide say like a washer, the
screw end of the rod is now put inside a tube, the end of the tube coming next to
the boss, on the rod, is strengthened, or say a solid piece covers the end, with a
hole through same, to allow the rod to pass through, but not the boss, next a
strong made shoulder with a hole through same, just large enough to slip the plain
end of the rod through, is brought against the strong end of the tube, and is
secured to same, with sufficient space left between the two, as to allow the boss on
the rod, to move freely round, from near by this shoulder, projects an arm, on the
end of this arm is a beveled wheel, with an handle to turn same, on the plain, end
of the rod next to the shoulder, is another beveled wheel, engaging in the first
wheel, the second wheel is made fast to the rod, above this wheel on the rod, is a
loose collor, this is so arranged that a chain or the like may be attached, on the
end of rod is fastened a strong head, to keep the collar in place, between the
collar and head is a ball bearing, to reduce friction; you now have another tube,
which I will call for convenience sake, a sliding tube, this tube is small enough in
diameter, to slide inside the first mentioned tube, one end of this tube as secured on
the inside, a strong nut threaded, and made to fit the screwed rod, on the out-side
of the sliding tube, is cut a key-way, which engages with a pin projecting through
to the inside of the first tube, to prevent the sliding tube turning round, at the
end of the sliding tube is secured a hook; to work the machine, you have a chain
or the like, which you fasten to some stationary object, then to the loose collar, the
collar will also act as a swivel, you now get a second chain or the like, which you
fasten to the hook on the sliding tube, then to the prop or the like, you are now
supposed to have the sliding tube, partly wound on the rod, and if the handle is
now turned, it will be seen that the sliding tube will move up the threaded rod,
and pull down the prop or object; for the purpose of carrying the machine, an
handle may be put on the most convienent part; there might also be added, an
arm or arms, to rest on the ground, for the purpose of steadying it when winding:
any size of wheels may be used.
Doted this 8th day of Sentember 1899..

page_text: Improved Mechanism for Withdrawing Mine Props or the like.
I, HENRY JOHN TAYLOR, of 90, Broad Oak Road, Parr, St. Helens, in the County
of Lancaster, Mechanic and Colliery Manager, 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 has reference to mechanisms or means for withdrawing mine
props, or the like, and has for its object and effect to provide a means which is
handy, and can be easily manipulated and carried, and through which the props
can be withdrawn safely, and without liability of danger to the user.
The invention will be described with reference to the drawings, which illus-
trate it.
In these drawings, Figure 1 is a longitudinal section of the mechanism;
Figure 2 is an outside view; and Figure 3 an end view.
Referring to the drawings, a is a tube or case fixed and supported, or carried in
a socket. Within this socket, and supported by it, is a threaded shaft c, the
inner end c of which is plain, and constitutes a journal working in the head of
the socket b, which forms a bearing; and 2 is a collar on the end of this journal
portion c, the inner edge of which abuts against one end of the bearing portion
of the socket.
Then, on the end of the portion c¹ of the shaft, there is fixed a bevel wheel d;
and gearing with this wheeld is a pinion e, mounted loosely on a spindle 6' formed
on the side of the socket b. And connected with this pinion is a hand lever f,
by which the pinion and moving parts are operated, as hereinafter described.
At the back of the bevel wheel & there is a ring h, fitting loosely over the
extreme end of the shaft el; and, outside this ring, there is a nut i which fits
over the threaded extremity of the shaft, and keeps the ring in position, as
well as the collar up against the shoulder of the socket b, against which it works.
At the outside of the ring h, and the inside edge of a nut i, grooves are formed,
and in these grooves anti-friction balls are provided, and constitute a roller thrust
bearing.
The ring is provided with a hook and eye h¹², into which the chain or other
means of fastening or holding the mechanism in position is attached.
Within the tube w, there is a second tube k, the inner end of which is
threaded, and forms a nut, engaging with and working on the threaded shaft e;
whilst the opposite end of the tube is furnished with a hook or eye l.
The tube a forms a guide to the tube k; and this tube is prevented from rotating
therein by a pin m, or equivalent device, and a key-way or slot in the outer surface
of the tube, into which the end of the pin m projects.
In use, one end of the apparatus is secured by a chain through the hook and
eve ¹² to a fixed or stationary point, which will serve as the resistance or hold-
fast; whilst the prop to be moved is fixed to the hook by means of a length of
rope or chain, preferably of some considerable length, so that the mechanism
may be placed at some distance from the prop to be removed.
C
Prior to fixing, the tube will project out of the end of the tube a, the hook
being always at the outer end of the threaded rod r.
lever f, the threaded shaft c will be rotated through the gearing wheels e and d,
Then by turning the hand
and this rotation of the shaft e will move the tube k into the tube or barrel a,
and so will pull upon the prop, and eventually withdraw it, or pull it away.
The power which can be produced by means of the threaded rode acting upon
the nut will plainly, be very great; and, consequently, through the means of the

page_text: gearing described, a man can easily withdraw the props, no matter how firmly
lodged in position; and the friction and pressure, being taken by the thrust
bearing balls, the power absorbed in the mechanism itself is relatively small.
The stresses on the main parts of the mechanism being, practically, all longitu-
dinal, it affords great strength, with a small section and weight of metal; and,
consequently, the apparatus may be made very light, and such as can be easily
carried about by the user. designates a carrying handle.
v
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, it is to be stated that the
invention is not restricted to the exact form of parts particularly shewn in
the drawings, and that what is claimed in respect of the herein described inven-
tion is:-
1. A mechanism or apparatus for withdrawing mine props, or the like, com-
prising a threaded rod, working in a carrier, and gearing with a tube or part.
adapted to be moved longitudinally by said rod, the said rod being adapted to be
operated by hand; substantially as set forth.
2. A mechanism or apparatus for withdrawing mine props or the like, com-
prising a threaded rod c mounted and working in a tubular carrier a b; a.
longitudinally movable tube k, also guided and working in the tube a, and gearing
at one end and worked by said threaded rod c; and tooth gearing mounted on
the shaft and carrier, by which said shaft is operated and the tube k moved
longitudinally..
3. In mechanism or apparatus for withdrawing mine props, of the kind herein
specified, a socket 6 supporting the journal c¹ of a screwed shaft c; a swivelling
holding ringh on the end of said shaft; a thrust block at the back of same
fixed on the end of said shaft; and gearing wheels for operating same; sub-
stantially as set forth.
4. A mechanism or apparatus for withdrawing mine props, or the like, com-
prising an external tubular frame, an internal threaded shaft, and a longitudinal
moving part, all concentrically arranged; and an operating mechanism disposed at
right angles to, or at the side of same; substantially as set forth.
5. The mechanism or apparatus for withdrawing mine props, or the like, having
parts arranged and adapted to operate as set forth with reference to and shewn
in the drawings.
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.