US878208A

US878208A - Mining process.

Info

Publication number: US878208A
Application number: US21001904A
Authority: US
Inventors: Jacob Kirschniock
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-05-27
Filing date: 1904-05-27
Publication date: 1908-02-04
Anticipated expiration: 1925-02-04

Description

PATENTED FEB. 4, 1908.

J. KIRSOHNIOK.

MINING PROCESS.

APPLIGATION FILED MAY 27. 1904.

mums STATES ATE T. OFFICE.

JACOB KIRSCHNIOK, OF ZABRZE, GERMANY. l

MINING PROCESS.

Specification of Letters Patent.

N maeoe.

Patented Feb. 4, 1908.

Application filed May 27. 190% 8Iill N0- Zl0.019. I

To all whom it may concern:

Be it known that I, JAooB Krnsonmoir, mining engineer, of Zabrze, Upper Silesia, in the Kingdom of Prussia, Germany, have invented a new Mining. Process, of which the following is a specification.

mining-process and more particularly to a cutting process, that is to say to a process \for the production of incisions for facilitating the obtaining. or coal or the like. Such incisions or holings have hitherto been produced by meansof the wedge-pick, the cutting-par or by means of the coal-cutting machines. Apart from the dilliculty and expensiveness of this work, a great deal, of dust is naturally formed by the same and it is quite certain that the majority ol explosions arecaused by coal-dust resulting from these incisions. a

By means of the roccss according to the present invention, t e work of making these incisions is extraordinarily simplified and water jet, particularly in salt mining and in gold mining. Nevertheless this latter a lication is distinguished fundamentally rom the process according to the present invention.

In carrying out the presentproccss, the natural pressure of a high column of water can be employed with advantage, as the working of coal scams mostly occurs at great dcpthsl This pressure can by means i of pumps be further considerably increased up tolOO atmospheres and over.

If a coal-seam is to be separated from the overlying and underlying, rock, the blastholes iorun-ed at the upper and lower boundaries of the coal-seam. In the majority of cases, as the rock is mostly harder than the coal, the blast-holes will be made in the The'present invention relates to a new I the pro notion of the blast-holes is of no im.- portance at all. If on the contrary the rock can be worked by the water-'et to greater advantage, it will be prefera le to form the blast-hole in the rock, naturally always close to the boundary of the coal-seam.

be like- The high-pressure water jet can wise advantageously employed also for the production of the bl ast-holes in the coal-seam itself. The coal-seams can in this manner be divided into-strips, which can then be easily severed by the, introduction of explosives.

. The accompanying drawing illustrates the application of apparatus to a coal-seam for 't is carrying out of the present invention.

Referring to this drawin 7c is the coalcoal es ecially as the loss in material through seam and g 9 denote the'over lying and underlying rock, 8, s are the incisions or blast-holes and a, b, 0 represent the mouth-pieces of the devices serving for the carryin out of the present process. By means of t e dance or pipe-support provided with the mouthiece a, an incision is made at the device wit the mouth-piece c an incision is made at the boundary of the underlying rock. By means of the device with the mouthiece b an incision is worked into the midd e of the coalseam. The coal-seam is 'in this manner -divided into two strips, which can be easily blasted'ofi Several incisions can of course be worked in'the'coal-seam itself,,and the coaLseam be cut-into several stri s. This method can be suitably em 10 e in cases where the seams are very tli'cli. In cases where thereare two seams which are sepa rated by an interval of only slight thickness, the incision is naturally arranged in this inter val, so that by the formation of the incision a double effect is obtained.

In the case of seams of slight thickness, it

will suffice, in the. majority of cases, for the incision to be worked at the boundary of the overlying or at the boundary of the underlying rock,.so that in these cases, the device with the mouth-piece b will accordingly not be used. b

As the result of experime'ntit has been shown that with a pressure of about 30 atmospheres, a water jet of 3 millimeters thick-- ness is most advantageous.

The more the pressure is increased, the finer naturally can the water jet be and the greater'f'is the cutting or sawingaction of the same What I claim is:

1. The process T minerals which con more fine jets XVfLtvl' u sure against the miners hole or cut is desired.

2. The process minerals which con 1n delivering one or more fine jets of Water under a pl'essuge of from 50 to 100 atmospheres against the mini cutting holes or slots in in the direction which the hole or cut is desired and in close proximity to the mineral surface on which the jet sets.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

JACOB KIRSCHNIOK.

Witnesses CARL ILGNER, FRITZ HULDscHINsKY.