PATENTED AUG. 4, 1903.
l/ L.` P. PRIESTBDT.
APPLIGATION FILED MAY 21. 190s.
, momumo., msnmarnv n c 'PATENT Patented August 4, 1903.
LUTHER RFRIESTEIDT, OF CHICAGO, ILLINOIS.
SPECIFICATION forming part of Letters Patent No. 735,489, dated August 4, 1903.
Application led May 21, 1903. Serial No. 158,111. (No model.) V
TotZZ whom, it may concern:
Be it known that I, LUTHER P. FRIESTEDT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sheet-Filing; and I do here-AA either a permanent or temporary character.
,ication The beam-sections A are provided with rib r bar edges, the web of the beams bisecting the same so, that the thickened part Will be raised equally on each side thereof. The ribs 4:, formed ou the respective edges of sections A, are approximately square in cross-section and provide a locking-shoulder 5 on each side. v
The alternately-joining beam-sections B are provided on eac-hedge with an integral jaw 6, formed with a groove or recess? of a shape to fit over one side of the ribs 4, the` hook edge of the jaw 6 having a locking en` gagement with the shoulder 5 on that side of the beam-section. A companion jaw 8 is 1ocated on the opposite side of the beam in forminga double-jaw connection. The jaw members 8 are separate parts and are provided with a riveting-Bange 9, through which the rivets IOQare inserted in rigidly securing the same to the beam-sections B. The hook edge ll of the jaw members 8 engage the shoulders 5 on the side of the Wall opposite to that of the jaw members 6 in forming a complete interlocking engagement of the beam-sections.
It will be understood that the interlocking rib and jaw edges run the full length of the beam-sections and also provide the usual guide features when assembling the beams in the operation of driving.
In the modification, Fig. 3, the rib edges a of the sections A are cylindrical in cross-section and the engaging jaw edges b on sections- B of a corresponding contour to properly lit the same in assembling the sections.
Having thus described` my invention, what I claim, and desire to secure by Letters Patent, is-
l. In metal sheet-piling, a beam-section provided with thickened rib edges,and a joining beam-section provided` with jaw members along the respective edges thereof and adapted to engage said rib edges in locking the sections together as they are assembled in a wall structure, substantially as set forth.
2. In metal sheet -piling, a beam -section having ribs formed on the respective edges thereof that are bisected by the web part and a joining beam-section provided with jaw members extending around on each side of said ribs in an interlocking engagement, sub-` stantially as set forth.
3. In metal sheetpiling, a beam -section provided with ribs on its respective edges that are bisected by the Web part and have shoulders formed along the inner sides thereof, and a joining beam-section provided with fixed jaw members having hook edges en# gaging said shoulders in locking the beamsections together, substantially as set forth.
In testimony whereof I aifix my signature in presence of two Witnesses.
LUTHER P. FRIESTEDT.
J. B. DoNALsoN, L. B. COUPLAND.