Improved Apparatus for Breaking Down Rock, Coal and the like.
Year: 1899

page_text: Date of Application, 24th Oct., 1899
Complete Specification Left, 7th July, 1900-Accepted, 29th Sept., 1900
PROVISIONAL SPECIFICATION.
Improved Apparatus for Breaking Down Rock, Coal and the like.
I, JULES LACROIX, of 21, Rue Boulainvilliers, Paris, in the Republic of France,
Contractor for Public Works, do hereby declare the nature of this invention to
be as follows:-
-
My invention refers to means for displacing rocks, coal, and other similar
stones or mineral substances in masses subdivided in as many parts as there are
holes or mines bored.
I make use of a compression pump to actuate the apparatus, using any suitable
fluid for the purpose and, in connection therewith by means of suitable tubing,
a hydraulic cylinder of approximately the same diameter as the bore of the mine
into which it is inserted. This hydraulic cylinder is fitted with pistons which
are shot out by the force of the compression pump when in action.
The pump is formed with a reservoir containing any desired quantity of fluid
in accordance with the requirements of the particular class of work to be per-
formed. The plunger of the pump is raised and lowered by means of a hand
lever. By the working of this plunger, very great pressure is obtained within
the apparatus, and conveyed to the hydraulic cylinder placed in the mines bored,
and the pistons therein are forced out at each stroke of the pump, and act upon
the rock or stone to be displaced.
TIL: 041 1
Notahan 1000
HUGHES & YOUNG,
55 & 56, Chancery Lane, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improved Apparatus for Breaking Down Rock, Coal and the like.
I, JULES LACROIX, of 21, Rue Boulainvilliers, Paris, in the Republic of France,
Constructor for Public Works, 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:-
My invention refers to means for displacing rocks, coal, and other similar
stones or mineral substances in masses subdivided in as many parts as there are
holes or mines bored.
In the accompanying drawings,
Fig. 1 is a sectional elevation of the compression pump to actuate, by means
of any suitable fluid, special pistons which are located in my hydraulic tube or
cylinder shown in Figs. 2 & 3, the latter of approximately the same diameter
as the bore of the mine into which it is to be inserted.
Figs. 3, 4, 5 and 6, are respectively sections through lines x x and y y and
plan views of the various positions of the piston which is to displace every portion
of a rock, shewn to a larger scale than Fig. 1. I substantially make use of a
hydraulic pump which is able to rest upon a fixed base or to be carried on a
man's back, in accordance with the requirements of the particular class of work
to be performed, in working quarries coal-mines, and the like. This pump is
composed of a reservoir or tank 1 containing any desired quantity of fluid in
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page_text: relation to the wants of the working. A piston 2 of a suitable diameter is
reciprocated by means of a hand lever 3ª pivotted at 4. In this way, on each
stroke of the piston 2, I exert a given hydraulic and initial pressure when the
fluid has moved along the pipes, 6, 7 and 8 with valve 9 and 10 and the like.
When I again raise the lever and pistons 2, by means of the stop-clack valve 9,
I store this pressure in the movable pipe 8, and also the further pressures which
will be generated by other strokes of the lever 3, and piston 2.1
The tube 8 is connected directly to another 11 Fig. 3 so that the fluid then
comes to 11, at a very high pressure at the top of the hydraulic tube or
cylinder 12, for acting by, flowing through the pipe 13 and as its pressure increases
it forces out the pistons 14, 15. Their tight packing admits of keeping a high
pressure, with the assistance of the stamped leathers 16 placed in corresponding
cavities made in the thickness of the tube 12. The lower part of the tube 12
is closed by the plug 17 and its leather 18 whilst at the upper part of tube 12
I place a union. 19 with leather 20. The nut 21 connects the pipe 11 with the
union 19 in the manner shewn in Figs. 3 and 5.
At the beginning, the pistons 14, 15 are in the position shown in Figs. 2, 3
and 4, while Figs. 5 and 6 show the piston, 15 brought a great distance out of
the tube 12, and forcing out the portion of rock which has yielded under the
strain constantly repeated and owing to the multiple strokes of the lever 3 and
piston 2, of the hydraulic pump Fig. 1.
The section of the piston of a hydraulic tube or cylinder according to my
invention being much larger than the section of the short pump-barrel, the
pressure put on every piston, 14 15, of the tube is increased in accordance with
the number of times the section of the pump-piston is contained in that of the
tube piston, thus admitting of the production of a considerable strain when
desired. The pistons 14 & 15 are provided with stop or check pins 14ª 15³ to
limit their travel.
In this example, the pump and tube 12 are of suitable proportions, but when
in lieu of a diameter of 50 m/m, for instance, I need to employ a shorter or larger
diameter, I may construct the tube correspondingly and according to require-
ments. Also for the pump, 1 may provide a series of tubes to be adapted so
as to displace several cubes of rocks simultaneously.
The chief advantages are:-The absence of accidents commonly caused by
explosive compounds; and the economy effected by taking the place of the
dynamite powder, and the like.
Waste of time caused by frequent displacements of the operators, when ever
the mine is let off by explosive compounds is obviated and there is no fear of
fragments of rocks, falling upon the working-stocks, rails waggons and the like.
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) The combination of a hydraulic pump, wherein I use fluid at a high pres-
sure, with the pistons 14 and 15 to displace every particle of a rock, substantially
as described and shown.
(2) In apparatus for displacing rocks, coal or other similar stones or mineral
substances the hydraulic pump, wherein I use fluid at a high pressure, and the
pistons 14 15 furnished with the stamped leathers 16 constructed, arranged, and
operating substantially as shewn and described.
Dated this 7th day of July 1900.
HUGHES & YOUNG,
55 & 56, Chancery Lane, London, W.C., Agents.