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Патент USA US2412627

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Dec. 17, 1946.
2,412,627
E. MCGOWAN
LIFTING CLAMP
Filed Aug. 11, 1945
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INVEN TOR.
BY
[EL/51608 /Vlc GOA/6H
“Wk
ATTOIQNEY
Patented Dec. 17, 1946
UNITED STATES PATENT OFFICE
2,412,627
LIFTING CLAMP
Eugene McGowan, New York, N. Y.
Application August 11, 1945, Serial No. 610,385
1 Claim.
(01. 294-104)
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 0. G. 757)
1
2
This invention relates to a lifting clamp and
more particularly to a lifting clamp for use in
handling I beams, T beams and the like.
An object of this invention is to provide a
clamp for lifting I beams, T beams and similar
structural members without danger of slippage.
Further objects and advantages of this invention, as well as its construction, arrangement and
operation, will be apparent from the following
description and claim in connection with the accompanying drawing, in which,
Fig. 1 is an isometric View of a preferred form
of the present invention,
Fig. 2 is a side elevational view of the device
shown in Fig. 1 being used on a T beam, and
Fig. 3 is a sectional view taken on line 3--3 of
Fig, 2,
The lifting clamp H has an integrally formed
body portion l2 provided with horizontal supporting arms l3 and I4, and a bifurcated vertical
arms l3 and M are slipped under the horizontal
?anges 2t and 21 and on either side of vertical
Web 28. Another similar clamp is preferably
positioned at the opposite end of the T beam and
a cable secured to the bores 24 on both clamps.
The upward tension on the bore 24 resulting from
hoisting forces the jaw 22 against the upper sur
fare of the T beam and securely clamps the beam
against the arms I3 and I4. The teeth 23 pro.
vent the device from slipping off while an upward
pressure is exerted at bore 24, but when the pres
sure is released the device is readily disengaged.
It is to be understood that various modi?ca
tions and changes may be made in this invention
without departing from the spirit and scope
thereof as set forth in the appended claim.
The invention described herein may be manu
factured and used by or for the Government of
the United States of America for governmental
purposes without the payment of any royalties
fork l5,
5
10
15
20
thereon or therefor.
Fork I5 has parallel projections l6 and I1 proWhat is claimed is:
vided with transverse coaxial bores I8 and IS.
A lifting clamp comprising a body portion, a
Pin 20 extends through bores l8 and I9, and ropair of horizontally extending, laterally spaced
tatably supports lever 2| adjacent the middle 25 arms on said body, a fork extending upwardly
portion thereof. At one end of lever 2| is located
from said body, a bore through said fork, a rod
the jaw 22 having teeth 23 and at the opposite
mounted in said bore, a lever pivotally mounted
end bore 24 which is adapted to be connected to
on said rod, a bore at one end of said lever and a
a supporting cable.
jaw at the opposite end of said lever adapted to
In using the clamp to pick up one end of a T 30 be positioned in clamping relation with said arms.
beam 25 as shown in Figs. 2 and 3 the supporting
EUGENE McGOWAN.
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