US2611943A

US2611943A - Roadway load hanger

Info

Publication number: US2611943A
Application number: US41581A
Authority: US
Inventors: John B Templeton
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-07-30
Filing date: 1948-07-30
Publication date: 1952-09-30
Anticipated expiration: 1969-09-30

Description

Sept. 30, 1952 TEMPLETON 2,611,943

ROADWAY LOAD HANGER Filed July 30, 1948 Patented Sept. 30, 1952 UNITED STATES PATENT OFF-ICE ROADWAY LOAD HANGER "John B. Templeton, Dallas, Tex. Application July 30, 1948, SerialNo. 41,581

2 Claims. 1

This invention relates to new "and useful improvements in roadway load hangers.

In building concrete bridges and roadways across creek beds, gullies and other depressions, it is customary to provide piles carrying cap beams integral with concrete slab units. In pouring the concrete it is the practice to use hanger.

frames on the piles with false work in "therspans between thexpiles for supporting forms. Since the slab unit terminates over the center line of the pile, the load is substantially all on one side of said pile and this load tends to displace or tilt the hanger frame and throw the formout of line. In an eifort to overcome this difficulty, temporary pilings have been used for the medial portion of the span false work; however, such temporary piling is expensive, frequently inconvenient to erect and not economical.

One object of the invention is to provide for each pile, a load hanger adapted to engage over the top of the pile and support the hanger frame against tilting or displacement whereby the load is adequately balanced and carried and the temporary piling and false bents are eliminated.

Another object of the invention is to provide a load hanger including a stirrup or saddle engaged over the top of the pile with dependent side members detachably secured to the stirrup, whereby the side members may be removed with the hanger frames and the stirrup left embedded in the cap beam.

A construction designed to carry out the invention will be hereinafter described'together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing, wherein an example of the invention is shown,

and wherein:

Fig. 1 is a longitudinal sectional view of a portion of a concrete roadway and its false work with the load carried by a hanger constructed in accordance with the invention.

Fig. 2 is an enlarged elevation of the hanger,

Fig. 3 is a detail of one of the couplings, and

Fig. 4 is a horizontal, cross-sectional view, taken on the line 4-4 of Fig. 1. Q

In the drawings the numera1 Ill designates an open web beam which forms part of the false work carrying the concrete slab ll between the piles or piers 12, located at each end thereof, only one of which piles is shown. Transverse joists I3 are mounted on the beam and sheathing [4 forms the bottom of the form on which the slab is poured. The concrete pile l2 has a hanger frame, indicated generally by the numeral 15, clamped thereon; This frame includes a pair of bars I6 clamped against the hat sides-of the'pile by cross bolts I! and a pair of cross strips 18 rest on the bars at right angles thereto and are clamped on the :remaining .flat sides of' the pile y-tie bolts l9. v I

The hanger frame is clamped on the pile a substantial distance below the top of said .pile. ,A metallic load hanger, indicatedgenerally by the numeral 20, is carried on th pile. The hanger is generally 'U-sh'aped in cross-section. The hanger includes a stirrup or saddle 2| and :side rods 22 :deta'chably secured to the legs of the stirrup by couplings 23. The upper ends of the rods and the lower end of stirrup legs are screwthreaded to receive the internally screw-threaded couplings. The lower ends of the side rods are screw-threaded and pass through the bars 16 between the strips l8. Nuts 24 on the lower ends of the rods support washers 25 which bear against the under sides of the bars l6. While the hanger frame I5 is clamped on the pile it is hung and supported by the hanger 20.

A pair of stringers 26 rest on the frame l5 at right angles thereto and cap joists 21 are carried across these stringers. Sheathing 28 is laid on the cap joists longitudinally of the stringers. It is to be understood that there are a number of piles l2 disposed transversely of the slab H, but only the structure at a single pile is described because the invention resides primarily in the hanger 20.

Longitudinally of the sheathing and over the stringers, liners 29 are fastened and the lower edge portions of side sheathing 30 are nailed to the inner edges of said liners. Cap liners 3i are secured to the outer upper edge portions of the side sheathing and rest upon upright studs 32 supported on the liners 29 and fastened to the side sheathing. sheathing 30 constitute a form for the concrete cap beam 33. It will be noted that the pile extends through the sheathing and the upper end of the pile, the stirrup 2| and couplings 23, are

embedded in the bottom of the beam; The couplings have their lower ends at the sheathing and exposed so that the side rods 22 can be unscrewed from said couplings.

Superimposed bolsters 34 rest on sheathing 23 below the slab H and the end of the Web beam 10 rests upon the upper bolster. The sheathing l4 rests on the cap liner 3| above the bolsters and overhangs the upper'edge of the adjacent side sheathing 30. The structure which has been The sheathing 28 and side described is duplicated at the opposite end of the slab which is now shown.

It is customary in building this type of roadway to mold or cast said roadway in slab units. While the cap beam 33 is poured complete, the slab I I is terminated on the vertical center line of the pile I2 and obviously the load is on one side of the pile, as is shown on the right hand side of Fig. 1. ,Ifthehangerm wasnot. used theload would be irnpose'dupon the right hand side of-the hanger frame I 5 and thus, tend to tilt said frame or force it downwardly on the pile. In order to" avoid this difiiculty intermediate piles have been used for supporting the medial portion'of the.

= connectingthe ends of the lower bars, and bolts connecting the ends of the upper bars.

slab. The hanger bein balanced across the pile and having its side rods anchored maintains the 4 What I claim and desire to secure by Letters Patent is:

1. A hanger device for concrete structures including, an inverted U-shaped hanger having outwardly flared depending side legs, side rods detachably connected to the lower ends of the legs, and a rectangular frame comprising a lower pair of parallel bars adapted to snugly embrace the sides of.- a post and iii-which. the lowerends of the rods are secured and an' upperpairiof parallel bars crossing and resting upon the lower bars at .right angles thereto adapted to snugly embrace hanger frame in a horizontal position and prevents tilting or displacement of said frame.

When the concrete slab II and cap beam 33 and the additional slab I I shown in dotted lines -haveset" or-cured to the required degree, the

false work 'isreinovedl In removing the false work, the'nu-ts' 24 are unscrewed from the hanger rods- 22; the washers 25 removed and said rods are then screwed out of the couplings 23, which latter are left embedded in the bottom of the cap beam 33. The hanger frame I5 and the false work are then taken down in the usual'manner.

The foregoing description of the invention is explanatory thereof and various changes in'the 1 size, shape and *r'naterials, as well as in the details of the illustrated construction 'may be' made, within the scope of the appended claims, without departing from the spiritof the invention.

the sides of a post. 2. A hanger as set forth in claim 1, with bolts JOHN B. TEMPLETON.

REFERENCES C ITED 'I'he following referencesare of record in-the file of'this patentr UNITED STATES PATENTS Number V -Na'me 'Date 1 954,165 Brussel Apr. 5, 1910 1,180,084- Staehle Apr. 18, 1916 1,463,967 "Pedi go Aug; 7, 1923 2,215,972 Mueller et a1. Sept. 24, 1940 t p ,FOREIGNPATENTS Number Country Date 470,294 Switzerland Sept. 17, 1934