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Патент USA US2408720

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Oct. 8,1946.
Filed Oct. 1, 1945
k ‘w.
Patented Oct.l8, 1946 V
Vardy M..Abernethy, Forest City
' r 1 Application October 1, 1945,;seria1 No. 619,545
1 Claim. (01. 36pm) I
CE if J
£2,408,719 , 1" ff
_- porting scaffolding and the like. The supports
This invention relates to a support, and more
especially to a support adapted to suspend scaf
can also ‘be , suspended from I-beams.
folds and the like from- the rafters or other beams >
- :Some ‘of the objects of the invention having
been'stated, other objects will appear as the de
in a building; said support having means which,
scription proceeds when taken in connection with
the accompanying drawing in which:
by the weight applied to the ‘support, serves to
embed a pair of prongs into the rafter and where
by the greater the downward pull applied to the '
support, the greater the gripping action it will
exert upon the rafter or; beam from which it is
Heretofore, in painting ‘and otherwise ‘repair
, Figure l-is' a front elevation of one of the sup
ports showing it ready to be attached to a rafter
orbeam'in a_»building;~
Figure 2 is a sideelevation of the support shown
int-Figure 1, omitting .the beam, and looking at
ing the interior of‘buildings, it has been quite
a, problem tosuspenda scaffold in close prox
theleft handside of Figure 1;
imity to the underneathside of the roof for ap
upper-portion of Figure l and showingxthe prongs '
r. Figure-3, is an enlarged detailed view of the
playing a coat of paint to the rafters and the 15 of the Support embedded in the rafter or beam;
1 Figure 4 ‘is a side elevation of the twonearest
sheeting supported by the rafters. It has been
the custom to bore holes in thehroof and sus
pend rods, .pipes and thelike from the top sur
face of the roof for supporting a painting scaf
' supportsiofiour supports secured to the rafters
ofythe roof- of a building and showing the scaf
vfold supported thereby.
fold below the interior surface of the roof. Then, 20 Referring more speci?cally to the drawing, the
numeral It] indicates an elongated pipe, rod and
after the painting job is completed, it has been
the like which has a conventional coupling ll
necessary to repair the roof, thus resulting in
threadably or otherwise secured on the lower end
leaks occurring at these repair points.
thereof. A sleeve I2 is rotatably and slida'bly .
It is an object of this invention ,to provide a
mounted on the pipe l0 and has an outwardly
support and whereby a plurality of these supports
and upwardly projecting prong l3 secured there
can be provided for engaging a plurality of the
to by‘ welding or otherwise, said prong» being
rafters or roof-supporting beams of the building
adapted to support a suitable scantling such as
- l4 indicated in Figure 4. There are usually four
of the scaffold will cause the prongs on the upper 30' of these supports secured in a quadrangle and a
end of these supports to embed themselves in _ pair of scantlings l4 extending between the two
for supporting a. scaffold near the lower end or
ends of the supports and whereby the weight
the sides of the rafters and weight applied to
proximate supports with a floor [5 being adapted
the scaffold will cause these prongs to sinkvmore
deeply into the rafter, thus insuring a hold upon
the rafters which will not, under any circum
stances, come loose until all weight is removed
from the support and, when all weight is removed
to be laid thereon to serve as a scaffold.
‘ The upper portion of the pipes I0 has slidably
mounted thereon a sleeve 66 which is limited in
its downward movement by a pin l1 suitably
secured in the pipe Ill and projecting outwardly
therefrom. This sleeve I6 has a pair of, outward
ly and oppositely projecting prongs l8 and I9
from the supports, they are easily removed from
the rafters to which they have been a?ixed.
It is another object of this invention to provide 40 to‘the outer end of which are pivoted as at 20
and 2| the lower ends of dogs 22 and 23 which
a support adapted to engage opposed sides of
are pivoted as at 24 and 25 to‘the outer ends of
roof-supporting beams, such as rafters and the
links 26 and'ZT. These links have a plurality of
like, and whereby the support has a pair of piv
holes 28 and 29, respectively, therein, in any one
oted prongs on its upper end so that where the
rafter is out of reach, the support can be in 45 of which, the pivot bolts 24 and 25 may be mount
ed. These bolts 24 and 25 penetrate one of the
serted against one side of the rafter, that is one
‘holes 28 or 29 in the links 26 and 21 and also
prong can be placed against one side of the rafter
penetrate a suitable hole through the interme
and a slight downward and lateral pull will cause
- diate portion of the dogs 22 and 23.
the other- prong to'engage the opposed side of the
The proximate ends of links 26, and Z‘Iare piv
rafter and a'further application of weight or 50
oted as at 34 to the upper end of pipe'lll. The
downward pull to the support will cause the
upper ends of the dogs 22 and 23 have pointed
points of the prongs to embed themselves in the
portions 30 and 3| which are adapted to be em
sides of the rafter ton?rmly secure the supports
bedded in a beam such as rafters 32 which are
thereto, each of said supports having a hook on.
its lower end for receiving a'scantling for sup 55 adapted to support sheeting 33 of the roof ofv a
building. These prongs 30 and 3| may likewise
hoist, or overhead machinery, or for a variety of
be secured to horizontal beams in a building even
though there is no obstruction supported by the
In the drawing and speci?cation there has
upper edge of the beams; but they are especially
been set forth a preferred embodiment of the in
adaptable for securing to the rafters of a build C31 vention, and although speci?c terms are em
ing without disturbing the roof supported by the
ployed, they are used in a generic and descriptive
sense only, and not for purposes of limitation, the
If it is desired to attach fourof these supports
scope of the invention being de?ned in the claim.
to the rafters of a building, that is, two supports
I claim:
in spaced vrelation attached to each rafter, it is 10
A support adapted to be secured to opposed
only necessary that the operator seize the lower
sides of a rafter or other beam in a building com
end of the pipe in and project the support up to _ prising an elongated shank, means on the lower
where, say, one of the prongs 30 or 3|, engages
end of the shank for supporting an object, a
one side of the rafter.
I sleeve slidably mounted near the upper end of
By a downward and lateral pull exerted on the
the shank, a'pair of dogs having their lower ends
pipe IS, the pipe I i] will slide downwardly in sleeve
pivotally secured to opposed sides of the sleeve,
Hi and this will pull the inner ends of the links ' La pair‘ of ‘links'pivotally secured to the upper
25 and 21 downwardly which will cause the points
end- of‘ the shank at one end and having their
38 and SI to both engage and become embedded
other ends pivotally secured to an intermediate
in the opposed surfaces of the rafters 32. When 20 portion of said dogs, the upper ends of the dogs
sufficient weight has been applied to the sup-v
being turned inwardly and pointed towards each
ports to cause them to be ?rmly embedded in the
sides of the rafter, then the sleeve l2 can be
rotated to the proper position to receive the
other and terminating in a sharp point and being
adapted to engage and embed themselves in op
posed sides of the beam when ‘applied to a beam
scantlings 0r beams i4 and a suitable floor [5 can 25 and downward pressure is applied to the shank,
be supported by the beams or scantlings l4.
a stop on the shank to vlimit downward move
These pipes it can be any desired length, that
ment of the sleeve, said sleeve normally resting by
is of a length to support a man so he can reach
gravity on said stop to cause the pointed ends of
the roof structure comprising rafters 32 and 33,
said dogs to be widely separated, lateral pressure
or, if desired, to use and support another object a 30 on the shank serving to embed the pointed upper
much greater distance below the roof 33, then
end of (one of the dogs in one side of the rafter or
thesepipes Hi can be of any desired length to pro
beam so that a slight downward pull on the shank
vide a scaffold or support at any desired distance
will move the pointed end of the other dog against
below the roof structure. For example, one or
the other side of the rafter or beam, and ‘fur
more of these supports could be attached to the 35 ther downward pressure on ‘the shank will embed
rafters or other cross beams in a building and a I
the pointed ends of both dogs further in the
suitable hoist could be attached to the lower
rafter or beam.
ends thereof and it could serve as a support for a
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