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Патент USA US3034823

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May 15, 1962
G. w. CAUSEY
3,034,812
LOCK FOR RETAINING BRACES ON THE SCAFFOLDING STUD
'Filed May 21, 1959
541g. 7
INVENTOR.
650245 N CA usav
1%: A rroeusy
ited grates atent
Q6
1
3,034,812
LOCK FOR RETAINING BRACES ON THE
SCAFFOLDING STUD
George W. Causey, Wilkinsburg Borough, Allegheny
County, Pa. (201 Rebecca Ave., Pittsburgh, Pa.)
Filed May 21, 1959, Ser. No. 814,713
8 Claims. (Cl. 287-535)
This invention relates generally to scaffolding struc
_
3,034,812
Patented May 15, 1962
2
the scaffolding unit made up of the pipe members 1
and 2.
.
I
As shown in FIG. 3 the bracket member 10 has a long
‘leg section 11 ending with the upturned foot 12 at one
end and the arm 13 at its opposite end.
The foot 12
and the arm 13 extend outwardly from the leg 11 in
the same direction and are substantially parallel with
each other. The other end of the arm 13 is provided
with a downwardly extending arm section 14 bifurcated
tural units and more particularly to locking means for 10 at its lower end as indicated at 15 to form the U-shaped
retaining brace members on pins secured to scaffolding
slot 16.
units.
When the base 5 is secured to the pipe 1 the long leg
The simplest and most prominent way of securing the
11 is inserted between the inturned ?anges 7 and when
ends of removable brace members to scaffolding units is
these ?anges are welded to the surface of the pipe 1 the
by means of a thread pin secured relative to the scaffold 15 bracket 10 is held in place by the retaining surface of
ing unit and provided with a nut usually in the form of a
the base 5 that faces the rail 1 and the ‘foot member is
Wing nut that secures the brace members on the pin. The
too large to permit it to slide out from under the channel
brace members are usually made of tubing having their
base 5. Owing to the fact that the leg 11 is loosely
ends ?attened and a hole drilled through the ?attened
retained under the channel member 5 it will fall by its
end portion for receiving the pins. Threaded pins of 20 own weight to the position shown in FIG. 1 where the
this character become damaged and it is di?icult to retain
stud 3 is received in the opening 16 formed by the bi
them in place owing to the fact that it is impossible to
furcated end 15 of the arm 14. Thus by engaging the
screw the nut onto the threaded pin. Again the nuts
underside of the foot 12 and raising the bracket 10,.the
become lost because they are separable from the pins and
brace members 17 and 18 may he slid over the end of thev
it is frequently di?icult to hold the scaffolding unit with 25 stud 3 and between the base 5 and the arm 14 after which
a brace member in place while attempting to secure a
time the bracket 10 is released and it drops down into
nut thereto.
‘
c
position as shown in FIG. 1 to retain the brace members
Other forms of attaching means have been employed,
in position on the stud>3. If desired a wing nut 20
however, they usually present difficulties owing to the
may be threadably engaged on the stud 3 and if su?i
fact that they provide relatively thin structural pieces that 30 ciently tightened it may ?ex the long arm 14 so as to
become bent and otherwise damaged and fail to function
tightly clamp the braces 17 and 18 against the outer face
as a good locking means. Such a type too is readily
of the web 6 of the base member 5.
bumped and creates a hazard as the locking device may
As shown in FIGS. 5 and 6 the rail member 1 of
the scaffolding unit has the ‘keeper in the form of the
35 post 21 provided with a shoulder 22 which is the retain
mitting the braces to fall or slide off the pins.
The principal object of this invention is the provision
ing surface facing the rail 1. This keeper functions in
be readily bumped out of locking position thereby per
of a locking device in the form of a link that when raised
will leave the pin free for the insertion of the brace mem
bers, however, when released it will drop into place and
lock the brace members on the pin.
Another object is the provision of a lock that may be
provided on a scaffolding unit regardless of which posi
tion the scaffolding unit is oriented.
a manner similar to that of the channel member 5 in
FIGS. 1 to 4 which is the keeper of the bracket 11} that
slides therein. The bracket 23 has the leg portion 24
with the longitudinal slot 25 that slides over the post
21 and is retained in place by the shoulder 22. The end
of the leg 24 is rounded as indicated at 26 to permit the
bracket 23 to be raised to its highest position and then
Other objects and advantages appear hereinafter in the
rotated through 180° so as to enable the bracket 23 to
45 operate longitudinally of the rail 1 regardless of the di
following description and claims.
The accompanying drawings show for the purpose of
exempli?cation without limiting this invention or the
rection of the scaffolding. To guide the bracket in its
claims thereto certain practical embodiments illustrating
to the rail 1 with its longitudinal axis parallel with that
of the axis of the rail and spaced from the post 21 suf
?ciently to permit one side of the leg 24 to freely slide
along the inner face of the fence 27. Thus by raising
the bracket 23 until the post 21 engages the bottom of
the slot, the rounded portion 26 of the leg permits one
the principles of this invention wherein:
sliding action a fence such as indicated at 27 is Welded
FIG. 1 is a view showing a lock to retain the brace
members on the scaffolding stud with parts broken away.
FIG. 2 is a sectional view taken on the line 2—-2 of
FIG. 1.
to turn the bracket so that it may operate in the opposite
FIG. 3 is an isometric view of the bracket member.
FIG. 4 is an isometric view of the stud support and 55 direction.
The ‘bracket 23 is similar to‘ the bracket 10 in that it
bracket keeper.
is provided with an outer arm 13 and a downwardly
FIG. 5 is a perspective view of a modi?ed form of a
sectioned arm portion 14, the lower end of which is
brace locking device.
provided with a U-shaped socket 16 in the same manner
FIG. 6 is a view in side elevation of the structure shown
60
as the structure shown in FIG. 3.
in FIG. 5.
The post 21 outwardly of the shoulder or retaining
FIG. 7 is a small perspective view of two scaffolding
surface 22 becomes the stud 28 which is the same as
units tied together.
that of the stud 3. However, the stud 28 is not threaded
Referring to FIGS. 1 to 4 the tubular members 1 and
2 represent longitudinal and transverse rail members 65 as indicated at 3 but could be so threaded to receive a
wing nut. In place of the wing nut the stud 28 is pro
which when assembled provide a scaffolding unit. The
vided with a head 30 that has a shoulder 31 that engages
stud member 3 is a thread member welded as indicated
the outer face of the downwardly extending arm 14 of
at 4 to the base 5 which is a channel member having a
the bracket so as to lock the brace members 17 and 18
web 6, the retaining surface of which faces the rail 1
in place. Braces 17 and 18 of course must have a hole
when the ?anges 7 are welded longitudinally of their
70 large enough to pass the head 30 of the stud 28. Thus
edges to the pipe member 1 as indicated at 8 to hold
the base member 5 and the stud 3 in proper position on
by merely raising the bracket 23 one may slide the brace
3,034,812
3
4
members on or off the stud and by merely releasing the
same will retain the brace members locked in position
extending section is a stud and said lock means is a wing
on the stud, gravity forcing the bracket downwardly in
4. The structure of claim 1 characterized in that said
U-shaped cutout on the end of said bracket embraces
said outwardly extending section and said lock means is
its locking position.
As shown in FIG. 7, two sca?olding units 32 and 33
are shown with their long rails 1 connected by their
nut.
in the form of an abutment on said outwardly extending -
section to hold said bracket from spreading outwardly
upper and lower transverse rails 34 and 35 and the two
thus locking the braces.
frame units 32 and 33 are shown interconnected by the
5. The structure of claim 4 characterized in that said
brace members 17 and 18 which are attached by means
of the brace locking means indicated at 36 which of 10 lock means abutment is a wing nut.
6. The structure of claim 4 characterized in that said
course could be either of the structures shown in FIGS.
1 or 5.
lock means abutment is a ?xed shoulder.
7. The structure of claim 1 characterized in that said
Iclaim:
keeper is a post having an inwardly facing shoulder that
1. A brace lock for scaffolding units consisting of a
rail, a unit in the form of a keeper ?xed to said rail, said 15 forms said retaining surface, and said lock means on
said outwardly extending section being a second shoulder,
keeper having a retaining surface facing said rail, an
and said bracket is slotted to ride under said second
outwardly extending section on said keeper to receive
shoulder.
brace members, a bracket slidably retained for relative
8. The structure of claim 7 characterized in that one
vertical movement by said retaining surface of said
keeper, said bracket having a U-shaped cutout to engage 20 end of said slotted portion of said bracket is rounded on
its outer edge, and a fence secured to said rail beside
said outwardly extending section beyond the brace mem
said keeper to maintain said bracket parallel with the
bers, and a lock means on said outwardly extending sec
axis of said rail regardless of which direction it is set
tion to hold said U-shaped cutout of said bracket and
to lock.
retain the brace members in position.
2. The structure of claim 1 characterized in that said 25
References Cited in the ?le of this patent
keeper is a channel member with its under web surface
forming said retaining surface and the edges of said
UNITED STATES PATENTS
keeper are secured to the rail of the scaffolding unit, and
2,686,086
French _____________ __ Aug. 10, 1954
said bracket is slidable under said channel and has a foot
at one end and an arm at the other end to limit its 30
sliding movement.
3. The structure of ‘claim 2 characterized in that said
2,716,576
2,726,902
2,849,258
Nordone ____________ __ Aug. 30, 1955
Borgman et a1 ________ __ Dec. 13, 1955
Crook _____________ __ Aug. 26, 1958
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