|Publication number||US363419 A|
|Publication date||May 24, 1887|
|Publication number||US 363419 A, US 363419A, US-A-363419, US363419 A, US363419A|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (40)|
|External Links: USPTO, USPTO Assignment, Espacenet|
F. H. POETSOH.
METHOD OF SINKING SHAFTS, BUILDING FOUNDATIONS, 850.. IN
Patented May 24 d d d N. PETERS. PhuwLnhogn mr. Wnshinglom D. c.
rrn Frames ATJENI rricn.
FRIEDRICH IIERMANN POETSOII, OF SUDENBURG-MAGDEBURG, PRUSSIA, GERMANY.
METHOD OF SINKING SHAFTS. BUILDING FOUNDATIONS, &c., lN AQUEOUS STRATA.
SPECIFICATION forming part of Letters Patent No. 363,419, dated May 24-, 1887.
Application filed October 21, 1866. Serial No. 216,846. (No model.)
To all whom it may concern:
Be it known that I, FRIEDRICH HERMANN POETSOH, a citizen of Germany, and a resident of Sudenburg Magdeburg, in the Kingdom of Prussia, Germany, have invented new and useful Improvements in Methods of Sinking Shafts, Building Foundations, Tunnels in Aqueous Strata and Under Water, of which the following is a specification.
The present invention relates to an improved method of sinking shafts, and of building foundations, tunnels, canals in aqueous strata and under water, and has for its object the building of a wall around the working place. This wall consists of two or more rows of columns of cement and of the aqueous material or water between the several columns, which is to be frozen to make the wall water tight.
' In order that myinvention may be fully understood, I shall now proceed to describe the same more particularly, reference being made to the annexedsheet of drawings, in which the same letters indicate same parts in all the figures.
Figure 1 shows in plan the arrangement of the boring or sinking pipes around the working place A. Fig. 2 represents in vertical section three of the boring-pipes and the manner of j unction of the U shaped freezing-pipes contained in them. Figs. 3 to 5 show the columns of cement or other solid material with the freezing-pipes and bottom plate after the boring pipe has been removed. Fig. G-reprcsents in a vertical section some of the cylinders of cement constituting the above-mentioned columns.
In carrying out the sinking of a shaft in vertical or inclined direction or the building of a horizontal tunnel or other underground work according to my invention, I proceed in the following manner: After having determined the dimensions of the object to be made, I calculate the number of pipes suitable or requi site for building the structure or wall of ap propriate size around the space in which the work is to be carried on, and which pipes in the present case are indicated by c to 0 in Fig. l of the drawings. These pipes are at their lower ends inserted or driven into the ground somewhat deeper than the shaft or other object will finally have to reach. The
pipes 0, c 0", c and-c are first sunk in the ground. When these columns 0, 0 c, 0", and 0" have been put into place the bottom plate, a", (into which the iron or metal tube a is screwed,) is inserted into the pipe 0, and this serves to close the bottom of the tube, and to form a fiat base for the cylinders 'or blocks (1 d. These tubes may serve also to aid (as may be needed) by affording means for connecting the whole structure together at the top and strengthening it, as shown at a, (Figs. 2, 3, and 4.) a isatube ofiron or other metal. Of course a rod may be used for the same purpose, but this will be much heavier than at'u be. In Fig. 5, a-indicates only the place for the tube, the latter being withdrawn. The enlarged parts at the top of the tubes or are not nuts, but shoulders or small supports for the connecting-piece of the tubes a. Figs. 3 and at are in accordance with the other figures of the drawings. The hatched surface just above the bottom plate, a represents a layer of cement for filling up the space in which the tubes 1) b have acurved shape. Further, the Ushaped freezing-pipes b b are inserted in the pipe 0, and the latter is then filled with cylinders or blocks (1 d of cement or other resistant material, Fig. 6, which in their position, one above the other, represent a column. Then the pipe 0, Fig. 1, is drawn out from the ground, so that only the cylinders d cl, of cement or other freezing-pipes I) I), remain in the ground, and finally the tube a is screwed off from the bot tom plate, a and likewise drawn out in order to be used again at thefollowing pipe, 0 Fig. 2. I then use the boring-pipe c (drawn out material, and the tube a,with the'U-shaped from the ground, as above mentioned for the means of the before-described method and of the small expense for sinking pipes and tubes a great number of columns 0 to c of cement or other suitable material can be built around IOC the place on which a shaft is to be sunk, or a bridge-pillar or tunnel, &c., is to be built, each of these columns being provided with'a bottom plate, a*, and with the U-shaped freezingpipes b b. I then, by means of coupling or connecting pipes b. b, unite one of the U- shaped pipes of each tube or column with the adjacent pipe I) of the next adjacent tube or column, and so on, and bring a refrigerating me dium --as, for example, a solution of chloride of calcium, or other liquid of a very low freezing-pointat a temperature under zero Oelsius in circulation, (through the united system of the U-shaped pipes by means of a pump connected with the terminal pipes of the abovementioned system,) whereby the water orquicksand or other aqueous strata contained between the columns to 0 Fig. 1, becomes frozen and unites all the columns to a firm and resistant, wall, which protects the inner space against lateral pressure.
If such a combined wall of columns and frozen material can be based on a water-tight of the wall of columns and of frozen material I dispose the rings 9 and h, Fig. 1. These are placed at the upper end of the structure and serve to keep the whole to place. It is obvious that within such a wall, shafts, bridgepillars, tunnels, 8m, can be built with all security without the necessity of compressing the air.
In case of tunnelings, the pipes and columns are disposed horizontally, or nearly so. When a canal is to be built, these tubes and columns are disposed vertically, andin all other cases they receivea slightly-inclined direction.
After the building has been finished the frozen wall is thawed up and the rectilineal parts of the U shaped pipes, Fig. 5, are drawn out from the solid columns as far as possible in order to be used again.
Having thus described myinvention, 1013,1111 as new and desire to secure by Letters Patent An improved method of sinking shafts,
building bridge pillars, tunnels, canals, or
whereby a water-tight wall is formed around and serving to protect the working-chamber.
Signed at Berlin, in the Kingdom of Prussia,
ROBERT FISOHL, W. PERCY TILGHMAN.
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