US1042571A

US1042571A - Sheet-metal piling.

Info

Publication number: US1042571A
Application number: US69082312A
Authority: US
Inventors: Tryggve Larssen
Original assignee: DEUTSCH LUXEMBURGISCHE BERGWER
Current assignee: DEUTSCH-LUXEMBURGISCHE BERGWERKS- und HUTTEN-AKTIENGESELLSCHAFT; DEUTSCH LUXEMBURGISCHE BERGWER
Priority date: 1912-04-15
Filing date: 1912-04-15
Publication date: 1912-10-29
Anticipated expiration: 1929-10-29

Description

T. LARSSEN. SHEET METAL FILING. APPLICATION FILED APR.15, 1912.

Patented Oct. 29, 1912.

2 SHBETS-SHEET l.

T. LARSSEN. SHEET METAL FILING. APPLICATION FILED APR.15, 'l 912.

Patented 0ct.29,1912.

2 SHEETS-SHEET 2 Fig.4.,

TRYGGVE LARSSEN, OF BREMEN, GERMANY, ASSIGNOR, TO

PATENT carton.

THE FIRM OF DEUTSGH LUXEMBURGISCHE BERG'WERKS- UNI) HUTTEN-AKTIENGESELLSCHAFT, 0F BOCHUM,

GERMANY.

Specification of Letters Patent.

SHEET-METAL FILING.

Patented Oct. 29, 1912.

Application filed April'lfi, 1912. Serial No. 690,823.

To all "whom it may concern Be it known that I, Tnroovn Lnnssmv, a citizen of the German Empire, residing at Bremen, Germany, have invented certain new and useful Improvements in or Relating to Sheet-Metal Piling, of which the following is a specification.

The specification of Letters Patent No. 839608 describes the construction of sheet metal piling consisting of dished piles, 2'. e.

sheets of approximately U-shaped cross section, facing alternately right and left, and joined together at their edges.

The object of the present invention is to better utilize the depth of the undulation aifordedby the dished shape of the piles, and thereby considerably increase the moment of resistance, without adding t the bulk of material used. This is effected by providing the plates, at the S-shaped ends of their limbs, with hook or flanges extending outward from the webs of the said S-shaped'tlanges and coacting with the latter to make the joint. In joining two plates, one or both of which are so constructed at the joint, the outer faces of the flanges are caused to meet, the engagement being made by means of the hook or hooks, whereas in the previous construction referred to the inner surface of a flange with a single bend and the inner surface of the S-shaped flange abutted against one another and consequently reduced the depth of the undulation by the double flange thick the hook can be rolled, it is advantageous to provide the edges of both plates with symmetrical flanges and hooks. The symmetrical form provides a double flange connection which results in a tighter jointas well as being advantageous from the point of view of rolling and construction. The symmetrical shape ofthe edges of the plates also prevents strains from occurring during the rolling process, which is particularly important in the case of long planks. Strained and distorted planks entail a considerable amount of after labor to straighten them and this operation produces impressions in the surface which prevent smooth passage during the ramming operation, with resultant strains in all the joints.

shaped projections 3 the two Since the profile of the S-fiange and I The invention is illustrated in the accompanying drawings in which Figures 1, 2, 3 and t are sectional views showing four forms of construction, Figs. 1, 2, '5 and 4 being detail views showing the respective joints,

Referring in the first instance to Figs. 1 and l a is the downwardly bent flange of one plate, and b the -S-shaped edge of the other plate. The S-shaped flange has a hooked projection extending outward from its web 6, beyond the plane (Z, in which the flanges meet, and this hook f engages under the flange a, of the latter against the outer face of the S-flange.

In the construction shown in Figs. 2 and 2, the plate is provided symmetrically at both edges with the S-flange and hook. The two hooks at the joint engage with each other, and the two outer parts i of the S-flanges embrace the hooks.

In the construction shown in Figs. 3 and S-lianges 7) engage with each other internally, and the hooked parts f embrace the S-tlanges.

In the construction shown in Figs. l and t, the S-flanges b have an additional bend, or are provided with extensions k which engage the hooks f. This construction has the advantage of leaving both sides of the joint smooth.

lVhat I claim is 1. Sheet piling composed of sheets of U-shaped cross-section, facing alternately in opposite directions and provided at each junction with an integral interlocking S-shaped flange, the web of said flange having air-integral hooked projection adapted to interlock with a flange abutting against said web. i

2. Sheet piling composed of sheets of U-shaped cross-section facing alternately in opposite directions and provided at each junction with an integral S-shaped flange, each sheet having symmetrical S-shaped flanges and hooked projections at the junction. I

3. Sheet piling composed of sheets of U-shaped cross-section facing alternately in opposite directions and provided at each junction with an integral S-shaped flange drawn to a larger scale.

and a hook, said flanges and hooks adapted adapted to intermesh with said hooked pro- 10 to interniesh and form an interlocking oint ection forming an interlocking oint.

at the junction. In testimony whereof I aiiix my signature 4. Sheet piling ooinposed of sheets of in presence of two Witnesses. U-shaped crosssecuon, facing alternately TRYGGVE LARSSEN.

in opposite directions and provided at each junction with an integral S-shnped flange, Witnesses:

the Web of said flange having a hooked pro- VILLY KNOB, jection, said flanges having bent extensions MAX Fm'rsnnn.