US1975534A - Flanged iron section - Google Patents

Description

Oct. 2, 1934. F. w. BRUSCH 1,975,534

FLANGED IRON SECTION Filed March 9, 1931 v Wgrwa Patented Get. 2, 1934 UNETED STATES ATENT ()FFICE Application March 9, 1931, Serial No. 521,341 In Germany March 18, 1930 2 Claims.

This invention relates to and has for its object to provide flanged iron sections forming, when placed side by side vertically, the peripheral members of sunken wells and shafts, sheet pilings 5 and similar structures.

For the walls and foundations of circular shafts with sunk in tubbings in the mining districts, iron joists or piles are frequently used of channel or 2 sections or in the shape of grooves or box shaped, which however only permit of the construction of shafts of large diameter owing to the small amount of play in the joints, the said joists or piles being intended chiefly for straight drift ways.

If it is desired to make shafts with sunk in tubbings or wells of smaller diameter at the present time it is necessary either to first bend single irons, such as groove or Z section irons, to the suitable curvature, or in the case of box section irons to fit in specially constructed joint irons with conical studs.

In all annular bodies of these constructions annular strains occur as a result of exterior force; these strains can only be absorbed in constructions having groove shaped, 2 section or box section irons, as either the connecting parts of grooved and box shaped irons lie in the neutral axis, or alternatively in the case of Z section irons on the exterior and interior side of the ring or indirectly by using the side flange or studs when forming the bends of shafts or like structures, which is statically unfavourable.

Further the walls of sunken shafts or wells constructed with these known forms of section irons have no smooth surface as, in the case of groove or Z section irons, the arrangement of the iron sections is either wave shaped or in the case of box or channel shaped sections the wall surface is interrupted by the joints situated in the vertical axis.

According to the present invention the abovementioned disadvantages are overcome by providing normal I-beams with a broad and narrow flange. For this purpose additional flat iron sections having joint formations at one edge are butt welded at the opposite edge to the edge of one of the beam flanges whereby the widened flanges of the I-beams may be joined together to form a smooth wall. All attempts to provide I-beams with integral joint formations by the rolling process, are frustrated by the impossibility to produce under cuttings by the said rolling process; similarly it is impossible with the present day rolling process to produce flanges of the necessary width, so that by first producing the easily rollable I-beams and then the flat iron sections with one edge offset or provided with suitably shaped joints and then welding the said flat iron sections to the flanges of the I section irons the required shaped sections or border piling irons for use in shafts can easily be produced.

If the flat iron sections with the joint or offset parts is welded to the flanges of the I section iron in the direction of the flanges so as to form extension of the flanges, T section irons are produced which are particularly suitable for the straight walls of rectangular shafts or in levels or drift ways; and if the flat iron sections are welded to the flanges oi the I section irons at an angle suitably shaped iron sections are produced for forming the corners of rectangular shafts or wells. It is also possible with iron sections of this particular shape to produce polygonal or substantially circular shafts or wells up to the smallest diameter.

The iron section made in accordance with the present invention can also be so arranged that the walls of the shaft or well have a smooth surface either interiorly or exteriorly so that an uninterrupted annular body results which is enabled to withstand directly the annular strains occurring, whilst the studs and free flanges reinforce the annular body.

The invention is illustrated by way of example in the accompanying drawing.

Figs. 1, 2 and 3 are transverse sectional views of three forms of flanged sections constructed in accordance with the invention.

Figs. 4 and 5 are fragmentary diagrammatic views of two different arrangements of the forms of sections illustrated in Figs. 1-3.

Figs. 6, '7, 8 and 9 are diagrammatic sections of various other forms of sunken. shafts 01' wells constructed in accordance with the invention.

Figs. 10 and 11 are partial diagrammatic vertical sections of forms of shafts which are circular.

In Figure 1, a is an I section iron which can be easily made by any rolling plant, and b are the flat iron sections with offset outer edges or suitable joint edges. These flat iron sections b forming extensions may be butt welded on to each edge of one of the flanges of the I-beam in the direction of the said flange during the course of manufacture or may be welded on a shaft head when required for use. The T-irons manufactured in this way may be used for constructing a straight sheet piling.

For producing an angle piece or corner for rectangular shafts or wells or for producing substantially circular wells, the'flat iron sections 17 with the joint or offset formations at their free edges are welded to the flange of the I section irons at a suitable inclination or angle previously determinedlby calculation. W

In Figure 2 for example the flat iron sections 15 are welded to the I section iron a at an angle of 45, thus a suitable corner piece is produced for a rectangular sunken shaft or well as shown in Figure 4. In this figure the shaped section irons are so arranged that the shaft or Well is formed with a smooth uninterrupted exterior wall. Figure 8 also shows a sunken shaft or well having a smooth outer wall, but in this case the section irons are arranged so as to form an octagonal well.

Figure 3 shows a further modification wherein the flat irons b are Welded to the I section iron in an upward direction, also at an angle of 45 thus forming a suitable corner piece for a rectangular sunken shaft or well according to Figure 5 wherein the interior wall has a smooth uninterrupted surface. These sections are also suitable for forming an octagonal sunken shaft or well having a smooth uninterrupted inner wall as shown in Figure 9.

Figures 6, '7, 8 and 9 are sections of various forms of sunken shafts or wells of the smallest dimensions each shaft or well consisting of only three or four pieces of the aforementioned iron sections, in one case having a smooth uninterrupted interior wall, and in the other having a smooth uninterrupted exterior wall.

substantially circular sunken shafts of any desired diameter in quadrants, Figure 10 being a section of a shaft" or well having a smooth uninterrupted inner wall and Figure 11 a shaft or well having a smooth uninterrupted outer wall.

It must'be understood that the fiat irons b may if desired be bent so as to fit the predetermined curvative of the structtue. If the said fiat irons b are, however; welded to the I section irons in the direction of the flange so as to form a continuation thereof, straight partitions result so that the invention is applicable to every requirement in the widest sense.

I claim:

1. Flanged iron sections forming, when placed side by side vertically, the peripheral members of sunken wells and shafts, sheet pilings and similar structures, comprising normal I-beams having flanges, and additional flat iron sections having joint formations at one edge and being butt welded at the opposite edge to the edge of one of the beam flanges whereby the widened flanges of the I-beams may be joined together to form a smooth wall.

2. Flanged iron sections forming, when placed side by side vertically, the peripheral members of sunken wells and. shafts, sheet pilings and similar structures, comprising normal I-beams having flanges, and two additional flat iron sections having joint formations at one edge and being butt welded at the opposite edge to the edges of one of the beam flanges whereby the widened flanges of the I-beains may be joined together to form a smooth wall.

FRIEDRICH WILHELM BRUSCH.

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