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Патент USA US2133425

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' Oct. 18, 1938.
Filed June 15, 1937
?air/7197f far/s“ w?
Patented Oct. 18, 1938
Henning Carlson, Brockton, Mass.
Application June 15, 1937, Serial No. 148,405
1 Claim.
This invention relates to fastening devices, and
its general object is to provide a fastening device
that is primarily designed for suspended scaffolds,
such as used by painters, and which can be se
5 cured to a roof board or the like, for detachably‘
connecting scaffold supporting cables, blocks and
tackles, etc., with respect to the board, and in an
easy and expeditious manner, without fear of ac
to form a shoulder for disposal against a cleat
and the right angle portion has an opening in the
form of a slot 4 adjacent to its free end.
An important feature of my device lies in the
hook member which includes a tapered body 5
which is substantially ?at and terminates at one
end into a single hook portion 6, while formed
on the opposite end thereof is a pair of spaced
parallel hook portions 1. The hook portions 6
cidental separation or displacement.
An important object is to provide a safety fas
tening device, that includes a hook member for
upwardly from the body and are directed toward
connection with a roof board and is adapted to
each other.
detachably and adjustably receive a chain for
connection with a block and tackle or the like, of
15 scaffolds, the hook member being of special con
struction and having spring means cooperating
with the hook portions thereof to prevent any
possibility of disconnection of the chain there
from or the hook member with respect to the
20 board yet the chain can be adjusted with respect
to the hook member without removing the chain
A further object is to provide a safety fasten
ing device of the character set forth, that will not
25 damage gutters or the like, or have any direct
connection therewith, and the device is simple in
construction, inexpensive to manufacture and ex
tremely e?icient in operation, use and service.
This invention also consists in certain other
30 features of construction and in the combination
and arrangement of the several parts, to be here
inafter fully described, illustrated in the accom
panying drawing and speci?cally pointed out in
the appended claim.
(Cl. 304—19)
In describing the invention in detail, reference
will be had to the accompanying drawing where
in like characters denote like or corresponding
parts throughout the several views, and in which:
Figure 1 is a perspective view illustrating my
40 device in use and showing the same attached to a
roof board.
Figure 2 is a side elevation of the hook mem
ber of the device.
Figure 3 is a top plan view thereof.
Figure 4 is a top plan View of the bracket.
Figure 5 is a side elevation thereof.
Referring to the drawing in detail, it will be
noted that I have illustrated my device as being
attached to a roof board I that includes cleats,
50 and for that purpose, I provide a bracket 2 which
is formed from a single strip of metal having open
ings therein to receive suitable securing means
such as screws, for ?xing the bracket to the board
and preferably between two of the cleats as shown.
55 The strip is bent to provide a right angle portion 3
and ‘I are shown as being curved outwardly and
Secured to the body, preferably midway its ends
by rivets or the like 8, is the flat intermediate por
tion 9 of a leaf spring which includes an arm I0 15
having its free end normally engaged with the
inner side of the hook portion 6, and a relatively
wide arm II normally engaged with the inner
sides of the hook portions 1, as clearly shown
in Figure 2.
The hook portion 6 is mounted through the
slot llof the bracket 2 for detachably securing the
hook member to the bracket, and extending be
tween the hook portions 1 is a chain l2, having
links of a width to bridge the hook portions 1 as ‘ 25
shown in Figure l, consequently it will be seen
that the chain is not only detachably secured to
the hook member, but can be adjusted with respect
thereto merely by rotating and sliding the chain
for disposing any one of the links in bridging
association with the hook portions 1. The chain
preferably has a ring l3 secured to- the outer
end thereof for the purpose of receiving a block
and tackle, cables or the like of scaffolding, and I
preferably provide a sleeve I4 formed from
leather or other suitable material to prevent the
chain from damaging the edges of roofs, gutters
and the like. It will be obvious that the sleeve
may be a section of a rubber hose which will prove
very efficient for the purpose intended.
It will be further obvious that my fastening
devices are used in pairs, one for receiving the
cables or block and tackle of the suspending
means at each end of the scaffold, and of course
two roof boards or other similar means anchored 45
to the roof, will be used.
It is thought from the foregoing description that
the advantages and novel features of the inven
tion will be readily apparent.
It is to be understood that changes may be
made in the construction and in the combination
and arrangement of the several parts, provided
that such changes fall ‘within the scope of the
appended claim.
What I claim is:
A fastening device for suspending scaifolds and
same for detachably connecting the chain there~
the like from a roof, and comprising an attaching
bracket having an angled portion provided with a
slot therein, a hook member including a single
hook portion for passage through the slot for con
nection with the bracket, a pair of parallel hook
portions included in the hook member, a chain
to, spring retaining means secured to the hook
member and engaged with the free ends of the
slidably mounted between the pair of hook por
tions and having links of a width to bridge the
hook portions thereof to prevent casual removal
of the chain from the parallel hook portions and 5
the hook member from the bracket, a protective
covering for the chain and means on the chain
for connecting scaffold suspending means thereto.
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