US2570666A

US2570666A - Beam clamp

Info

Publication number: US2570666A
Application number: US116089A
Authority: US
Inventors: Haagensen Thor
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-09-16
Filing date: 1949-09-16
Publication date: 1951-10-09
Anticipated expiration: 1968-10-09

Description

'[HAAGENSEN BEAM CLAMP YPatented Oct. 9, 1951 UNITED `SIATESS ATEENT OFFICE :2,570,666 1 BEAM CLAMP Tlrorfllaagfensen, New Yfork, N. pplcationseptember 16, 1949, vS'e'rial"No.`1161089 ."1Claims. (Cl. 25-131.-5`)

1 'This inventionfrelatesto "form clamps "or hangers o'f the character employed for "the 'support o'f "concrete Aforms 'from structural 'steel `I beams.

vide a device .of this 'ch'aracterwhich will beof simplen/(instruction and which will 'ri'gidl'y'and firmly grip theflange "ofthebeam and securely support the *forms The invention V`further contemplates the provision of a hanger or clasp of this eharacter "which'may be easily fitted in position and adjusted;-which -w-ill permit the removal and repeated use of its supporting rod;

which willpermit"themaintenanceof the clamp parts or gripping elements within 'the "concrete mass without-causing :the laterformation of rust marks on the surface of the concrete, and which will VAbe 'composed of but :few and readilyifabr'icated fparts.

'These' and other ob'ieets 'are vattained by 'theinvention, a 'more particular*description of which will hereinafter appear "and be speciiically set forth in vthe 'claims `appended"hereto `In `the 'accompanying drawing, wherein 'an illustrative embodiment of the invention is disclosed, Fig. l is a sectional View of the improved form clamp in engagement with the lower flange of an I-beam, showing the clamp supporting the form boards and with the concrete maintained thereby; Fig. 2 is a View looking at one end of the clamp; Fig. 3 is a top plan view of the clamp in engagement with the lower flange of an I- beam, but with the form boards omitted; Fig. 4 is a horizontal sectional View through the supporting rod just below the upper clamp member or jaw thereon, and Fig. 5 is a view showing a modified form of head on the rod.

The clamp includes a supporting rod I which is provided at one end with a threaded end portion 2 on which is threadably and thus adjustably mounted, the two clamp members or jaws 8 and II to be presently described. At its other end the rod is provided with a xed and enlarged head 3 which may be welded or otherwise securely and non-rotatively attached to the end of the rod I. In the form shown in Figs. l to 3 inclusive, said head includes a disk portion 4, having an upper, relatively at, bearing surface 5 for the support of the form boards shown, for example, at I5 and I6. Extending integrally and laterally from the disk portion 4 is an offset part 6 terminating in a handle shown at 1.

The upper clamp member 8, threadable upon the threads 2 on the rod I, is in the form of a substantially triangulated or wedge-shaped plate 'having' an un'de'r angular face llladapted to be maintained against the top of th'e lower iiange of the I-beam I3, as clearlyrshown inf-Fig. l. Arising ifrom the top sur-fa'ce of the clamp memberf isa"vertical viin 9 which eri'abl's Ithe -'cla'rnp`1membe`r te bef-manually rotated when 'plac- 'ing y"1t in 'damping 'posi-tion "on the ali'ge of 'the beamyand-also prevents rotativeimoveinent ofthe clamp after fthe -eoneret'e zis 'poured around 'the Saillie. Y

The lower :or under el'airip riimbr v"is"shiif/-n "at v'I 1 land the same 'consists `of 'a il'at l"plate"which is -th-readable on the Vthreads i2 `and is "thereby adi justable on 'thelrod Iteco'-operate 'with theuppe'r clamp 8 in clamping the ange of the beam I3 between them -as showin in Fig. 1. Therlower ciampi-iig plate I-I 'fori-ned fat one end-"with the v"down-ui'r'n'edup I2 which facilitates theifhanual adjustment of this 'elarnpand also-holds tl'i'evs'a'rfn'e against shifting ``move-ment after 'the-concrete hasbeen'pouredaround it. Y

From the ioregoing, the'operation `of the clamp and"`form board 'Support will be readily rinde-ris'tood. The rod Ifextends through suitable holes or openings in the lower form boards I5 and I6, and which support the side boards I4 in the known manner, and the two clamping jaws and II are threadably adjusted on the threaded portion 2 of the rod I so that the same securely grip or clamp the lower flange of the I-beam I3 between them. This is always done from above and not from below by manipulation of the handle 1. When the clamp is in position as above described, the concrete 2E! is poured in the forms and allowed to harden. When the concrete has hardened, the rod I is then removed and drawn out of the concrete by unthreading the rod from the clamp members 8 and II. The rod I and its attached head and handle may then be reused. The clamp members 8 and II are permitted to remain in the concrete mass and the small hole therein resulting from the removal of I the rod I may then be plugged.

It will be noted that the clamp members 8 and I I, remaining within the concrete mass, are so disposed therein that no portions of them are located near the surface of the concrete, but are completely surrounded. This prevents the formation of a large opening at or near the surface of the concrete and the exposure of parts of the clamp members thereat and prevents the formation of rust stains on the surface of the concrete. The clamp members here employed are Wholly contained with the concrete mass and located inwardly of the same and thus the objections 3 found in many clamps in the same category are eliminated.

In the embodiment of the invention shown in Fig. 5, the lower end of the rod I is formed with a loop or eye l1 as a substitute for the head 3 and handle 'I thereon. In the latter embodiment the loop I1 may be employed for the support of scaffolding during the building operation, and the rod may be readily rotated for adjustment or removal by a tool inserted through the loop or eye I1.

A further modication may consist in combining the head 3 and handle elements 6 and 'I thereof with the loop I1 so that the loop is disposed below the disk portion 4. With such an arrangement, the combination of operating tool Vor handle, Washer or disk and a loop will be had.

Having described one embodiment of the invention, it is obvious that the same is not to be restricted thereto, but is broad enough to cover all structures coming within the scope of the annexed claims.

What I claim is:

l. A clamp and hanger for structural steel beams embedded in concrete comprising, a rod threaded at one end and provided with a head portion at the other end, a pair of clamp members both independently and both threadably adjustable upon the threaded end of the rod for engaging and clamping the ange of the beam between them, said clamp members remaining in the concrete mass after hardening of the same and being positioned well within the body of the concrete mass and remote from the surface thereof.

2. A clamp or hanger as provided for in claim 1, wherein the head portion is iixedly secured upon the end of the rod and` comprisesa disk portion for the support of form boards, and an oiset handle portion projecting therefrom.

3. A clamp or hanger as provided for in claim 1 wherein the head portion is xed on the end of the rod and is in the form of a loop or eye.

4. A clamp or hanger for structural steel beams comprising, a rod threaded at one end and provided with a fixed head portion at its other end, a pair of clamp members independently threadable on said threaded portion of the rod, one of said clamp members being of triangulated form and provided with a longitudinal 1in rising from its upper face, the other clamp member being in the form of a at plate having a laterally-extended lip at one end, said clamp members being adapted to engage and grip the flange of the beam between them.

5. A clamp or hanger for structural steel beams adapted to be embedded in concrete comprising, a rod threaded at one end and provided with a xed head portion at one end and a threaded portion at its other end, the head portion consisting of a disk having an offset projecting handle, the disk having a nat upper face for bearing against form boards, a pair of clamp members independently threadable upon the threaded portion of the rod, one of the clamp members being of substantially triangulated form and provided with afin arising from its upper face, the other clamp member being in the form of a fiat plate having a downturned end, said clamp members being adapted to engage and clamp the flange of the beam between them and being adaptedto 'remain in the concrete mass remote from the surface thereof after the rod has been removed.

THOR HAAGENSEN.

REFERENCES' CITED The following references are of record in the