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Патент USA US2406078

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Aug- 20; 1946
c.
HUsHowER
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SCAFFOLD BRACKET
Filed April 2l, 1945
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2,406,078 y
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15.5' www „fg/7552i??? '
BY maf/M
Patented Aug. 20? 1946
j 2,406,078
UNITEDV »fs'rn'rßs‘? PATENT OFFICE
"mv"i’z,40s,o7s
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scAFFoLD BRACKET
z.,
f ‘clarence W. nushdwer, >south nena, Ina.
` V Application April 21, 1945, Serial No. 589,600
` 11 claims. (creol-_32)
.
1
y
This invention relates to improvements in scaf‘-fold brackets.
The primary object of the invention is to pro
ported. ' It will be understood that such double
pole scaffolds may be connected to and braced
`from the building wall, but such connections are
Vide a scaffold bracket which can be used to sup
_not relied upon .to support the loadswhich the
port va horizontal platform-supporting member of
Ascaffold bears. ' In the instant construction, the
a scaffold at any selected elevation upon a post
of a scaffold of either the single poleror double
pole type.
,
horizontal »platform-supporting members I2 are
of a length equal to' the spacing of the posts in
'
different rows.
A further object is to provide a simple, light
weight and inexpensive bracket which serves to
releasably connect supported and supporting scaf
fold members together by a firm frictional clamp
ing action.
A horizontal bolt f6 ‘passes
through each end portion of each member l2 in
spaced relation to the end edge> thereof, and a
wing nut I8 is threaded on said bolt.
Y
A bracket 20 serves to connect each end por
p
tion of member' l2 to the adjacent post l0. Each
bracket comprises a pair of flat C-shaped` plates
`each having a wide vertical central web portion
22 and parallel horizontal arms 24. Thetermi
A further object is to provide a scaffold bracket
with a guide for controlling movement of the
end of a horizontal scaffold member with respect
to a vertical membern which it abuts, in such
manner that the fractional ybinding engagement
between the parts increases as the load upon the
nal portions 26 of the arms 24 are of increased
thickness to provide inwardly- facing vertical
shoulders r28 adapted to bear against the Vouter
horizontal member increases.
,vertical surfaceof post `Il! at vertically spaced
' A further object is to provide a scaffold bracket
points. The’thickened terminal arm portions 26
are apertured to receive a bolt 3l! passing there
through and mounting a thumb nut 32. The
shoulders 28 formed by? the-thickened terminal
adapted to embrace a Vertical supporting scaffold
part and having an inclined guide engaged by a
horizontal supported scaffold part abutting 'said
supporting part, whereby said supported part is i ro‘ Gl portions 26 >are of a width slightly less than one
wedged by the cooperating factors of abutting .en
gagement of the supported and supporting parts
and the guided engagement of said supported part
half the width or thickness of post l l] so that the
thickened portions are spaced apart as best Vshown
in Fig. 3. z Nut 32 is preferably adjusted to per
and said bracket.
mit `the clamp parts to lie flat against opposite
Other objects will be apparent from the de-f .30 sides of post l0 without play'but with a sliding
scription, drawing and appended claims.
engagement. The web portion 22 of each bracket
In the drawing:
plate has an elongated. slot 34 thereinV which is
Fig. 1 is a fragmentary side view of a double
inclined slightly from the vertical, asillustrated.
pole scaffold, illustrating the use of my new scaf
In use, the brackets 20 are fitted upon the posts
fold bracket.
lli, and the nuts 32 are adjusted to;4 permit a
Fig. 2 is a fragmentary side view of a single
snug sliding fit of the bracket plates upon the
pole scaffold, illustrating the use of my-new
posts. The bolts I6 at the opposite ends of hori
bracket therein. '
zontal scaffold members l2r are passed through
Fig. 3 is a horizontal sectional view taken o
ythe slots 34 of the bracket webs and through
line 3-3 of Fig. 2.
;
member I2. Nuts I6 are. then adjusted for; a
Fig. 4 is a horizontal sectional view taken on
snug but sliding fit. Thev horizontal scaffold mem
line 4_4 of Fig. 2.
ber |2‘ may then be adjusted at any selected ele
Fig. 5 is a vertical sectional view taken on line
vation, .care being taken to so'position‘it’with
5-5 of Fig. 2.
respect to the bracket that its end_‘edges are in
Referring to the drawing, which illustrates the
firm abutment with the Vposts l0 as shown in Fig.
preferred embodiment of the invention, and par
ticularly to Figs. 1 and 3 thereof, the numeral
I9 designates the vertical posts or uprightsfof a
conventional double pole scaffold. As referred to
herein, a double pole scaffold is one in which two
rows of posts are spaced at different distances
from a building wall (not shown) and are suit
3; This binds vthe parts together firmly in fric
so
ably braced so that they constitute substantially
the sole support for the horizontal scaffold mem
bers l2 upon which a working platform I4 is sup- u
tional ’clamping engagement; As weight.` is ap
plied to member I2 thereafter, any downward
sliding of member l2 relative to the posts Ill‘and
bracket 20 -serves merelyto increase. orîtighten
the frictional clamping engagent of clamp 20 and
member l2 upon the post» l0, by reason ofthe
inclination of slot 34 which acts to bind the
parts more,r firmly. When the levelAof- member
l2 is to be changed, the parts are „disengaged by
, 2,406,078
cured in position. This obviously facilitates and _
simpliñes handling, inasmuch as bracket 20 does I
simply striking the ends of member I2 Yat the
bottom with an upward blow toploosen their fric,
tional engagement with the posts.` 'I'he member
yI2 is then raised relative to the brackets until
not require the use of securing means but only
relative manipulation of' parts to take advan
the slotsv 34 hold the ends thereof clear of the
posts. The member I2 is then adjusted toits
new level, vby keeping the bolts I6 inthe upper
portions of bracket slots 3d during such adjust
ment. Setting of the member I2 in its. new posi
tion is accomplished vby simply adjusting the 10
tage of its self-binding or wedged gripping ac
tion.
`I claim:
1. A scalîold bracket for securing `a horizontal
scaifold memberto a'post, comprising a pair
off?lat C-shaped plates adapted to bear against
opposite yside faces of a post, said plates having
>>member I2 relative to the bracket so that bolts
I6 are located at the lower parts of the slots 'toVr . -thickened .terminal portions providing vertically
again effect a Vclamping action between the ends ~ ' aligned shoulders engaging the outer faceof said
of member I2 and the shoulders 28 of thebracket " . post. and a vertical central web slotted in spaced
15 relation to the inner face of said post andin
Y
.
Y
Y
.
„
Y
1 with respect to the post.
clined downwardly and outwardly relative' tothe
The two-part construction ofY the brackets 2li"
is desirable but not essential; . Thus, inthe-‘posts 'i j plane 'of saidA shoulders, means securing said ter
should not be of uniform dimensions through- ,Y minal portions together, and securing means car- „
ried byV said horizontal member and slidable in
out their length, or if ,they should swell’ due to`
weather conditions so ‘that the brackets do not
slide freely thereon, a vslight loosening of the
nuts 32. is all that is- required ¿to remedy thedif
ñculty.. In other words', adjustmentÍ isprovided
said inclined slots to guide Vsaid horizontal mem-1
vrber intoV ñrni end- abutment with said vpost upon
'downward movement of said member relative to
said post. and bracket.
22 A scalTold bracketfor securing Va horizontal .
' ' 'tomeetfdifferent conditions soV that sliding clear.
ance is provided. without necessitating ïeircess 25 scaiïoldî member' to a post, comprising a pair of
play or oversize dimensions. Another advantage
of the two-piece clamp constru'ctioní shown ‘L is
that the clamp can-be used` with posts of different
Vplates adapted toi bear slidably against opposite
a building wall 46 and at their outer ends. by
posts Ill. In this type’of 'scaiïold a bracket. 20 is
fscaiîold member to a post, comprisingV a two
“side facesof’saiclî post and having a projection at
one side edge providing a Vertical shoulder adapt
ed. tcl-bear _against the outer face of saidv pest,
thicknesses ïsirnply by adjusting the connecting
bolt and nut properly. It will be. understood, 30 meansV for connecting said plates adjacent said
shoulders, each plate having an elongated slot
however, that IA contemplate the integral one
therein inclined slightly relative to said Vshoul
piece construction ofi the clamps 20'Í as. being
, ders and spaced from the inner face ofy said post,
within the purview of the invention,
and amember carried by and projecting from
ï The invention is'al'so applicableto conventional
said horizontal member and slidably received
single, pole scaffolds,V as> illustrated in Figs. 2, 4
in said slots. `r
_ _
.Y
'
and 5, 'where' the horizontal members AI2 consti
" 31 A scaffold bracket for securing a horizontal
tute putlogs supported vat their inner. endsby
utilized' inthe manner Vdescribed above to'sup
port 'only the outerend` of putlog 20'. `The oppo
site end of the pu-tlo'g isV secured to a iitting> 42.
The iitting 42 preferably comprises a flat base
plate-44 of substantial area andk a centrallso'cketV
part Vbody adapted to embrace vandfslldably en;
>gage three faces of said post,v .means securing
V»saldi bodyY parts together adjacent one of said
engaged faces, said» horizontal member being ar
' ranged’ iniend abutment with the fourth side of
»said post„ parallel opposed portions of said body
¿It` projecting fromene face Ao'f said plate'. to 45 ‘engaging opposite sides vof said'liorizontal mem
be'r‘andîeach having an elongated slot therein
snugly receivefthe end. of member I2. A bolt 43
>incline'dî downwardly toward .said post at-a small
passeslthrough' openings in the opposite. walls. of
socket Y¿Ilìï and through the member . I2“,À and f angle, and afboltï extending through said hori
zontal member and seated slidably» in said" slots.
mounts a ythumb nut 50. ' A plurality of openings
'are formedin plate 4d to receive securing mem 50 ` 4. A scaiîold‘bracket for secnringïa horizontal
scaffold. member to a post, comprising two-part
'bers‘i 50 whichv lodge in> the. wallk 40` to support. the
body of generally U-shaped cross? section, adapted
fitting. ‘Membersw 5U have been illustrated here
to slidably embrace .a post withfits opposite ends
-in-as screws, but nails 52„asshown in Fig. 2,.'may
projecting laterally from oneside of said vpost to
also. be used.. Double-headedn-ails. 52' well’ known
inthe art, whereirijtheY inner` head 54 limits the 55 engage opposite sides of said horizontal member,
said. .projecting ends each having an elongated
extent -to which the nail may be driven’and. the
outer-head. 56‘, is spaced from the inner rhead suf.'- ' inclined slot, means projecting outwardly fromv
said horizontal member and slidable in said slots,
and' means connecting said bracket parts to
ñcientlyto ' afford a convenient -portion .which
canbe engaged by hammer claws. to pull theV
same, are-’particularly well suited for use in se'
curing ñtting 42'to wall'llll.
`
`
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`
“
In the'singl’e pole's'caffold, the ñtting4`2` may
be I'secur‘edfït'o theV wall' atV the proper elevation.
60
gether.
U
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` 5'. A scaffold bracket for securing a horizontal
scaffold member to a post, comprising a member
U-shaped in horizontal cross section. and adapted
to slidably embrace a post, the opposite sides of
either as an 'individual' unit or while member I2
said member being wider than. said post. and each
is secured: thereto; andthe bracket 21) is utilized 65 having
an elongated inclined sl‘oti therein. spaced
>to‘ support .tlie'opposite 'outer endof member I2.
`from.
said
post', and means carried .by said. hori
4Itíwi'llï'be" observed in this connection that theÁ
zontaly member and received in said slots toi draw
V`Ybracket 20' is. capable' of supporting-.the member
Í tzfif -said memberï'is'ínot loaded, during the time
said horizontal member into iirm end abutment
the ñtting 42’i's being secured in place orÍ dur 70 with said'post upondownward movement ’thereofV
'Í ing theï tiî?eîit ‘is beingV released preparatory to
Yshif'ti'ngfthemember.I2; vIn other words, thev 're
Yl'easable-bracket' 20l Vcaribe set' as desired and
relative'to said post and’bracket.-
’
' '
“
’
6. In a_ scaiî'ol'd, a vertical post," a'horizontal
scaffold; member, av U-shaped g scaiîold-"bra'cket
Twin siiiapòrtgthe h‘orizöntai gements @tieneimi-,i1> -slidably ,embracing said post and‘having subst’an`theïsùppleméntal supports are anchoredA or'se- " 'tially parallel vertical parts projecting atfoppcsite
,
f >
2,406,078 `
5 .
sides of said horizontal scaffold member, said
projecting parts each having an elongated slot
spaced from and inclined downwardly toward
said post, and means connecting said horizontal
member to said bracket and slidable in said slots
to urge the end of said horizontal member into
firm frictional engagement with said post upon
movement thereof downwardly relative to said ‘
post and bracket.
'7. In a scaffold, a vertical post, a horizontal
scaffold member, a bracket slidably embracing
said, post and having substantially parallel ver
tical portions engaging opposite sides of and pro
jecting laterally from said horizontal member,
each of said projecting portions having an in
clined slot, and a bolt extending through said
horizontal member and slidable in said slots, said
bolt and slots serving to draw the horizontal
member and bracket into clamping engagement
with said post with a force proportional to the 20
load on said horizontal member.
8. In a scaffold, a vertical post, a horizontal
scaffold member, a bracket slidably embracing
said post and having substantially parallel ver->
tical portions engaging opposite sides of and pro
jecting laterally lfrom said horizontal member,
a
6
opposite end of said platform support and adapt
ed to be secured to said wall, and a bracket slid
ably embracing said post and projecting at oppo
site sides of said platformsupport, said bracket
having complementary elongated slightly in
clined slots spaced from said post, and a bolt car
ried by said platform support and slidable in said
slots to urge said platform support and bracket
into binding frictional clamping engagement with
said post.
10. In a scaffold adapted to be erected adjacent '
to a building wall, a vertical post spaced from
said wall, a horizontal platform support in end
engagement with said post, a fitting carried by
the opposite end of said platform support andv
adapted to be secured to said wall, and a bracket
slidably embracing said post and projecting at
opposite sides of said platform support, said
bracket having complementary elongated slightly
inclined slots spaced from said post, and a bolt
carried by `said platform support and slidable in
said slots to urge said platform- support and
bracket into binding frictional clamping engage
ment with said post, said fitting including a plate
bearing against said wall and a socket receiving
said platform support.
11. ‘A scaffold bracket for releasably mounting
each of said projecting portions having an in~
clined slot, and a bolt extending through said
a horizontal member slidably upon a post, com
horizontal member and slidable in said slots, said
prising a rigid’substantially U-shaped memberv
bolt and slots serving to draw Athe horizontal 30 embracing said post with its ends projecting lat
member and bracket into clamping engagement
erally from said post and provided with comple
with said post with a force proportional to the
mentary elongated slightly inclinedguides spaced
load on said horizontal member, said bracket be
from said post, and a slide member ñxedly car
ing formed of two complementary parts of sub
ried by said horizontal member and extending
stantially L-shape in horizontal section and con_ 35 transversely between and slidably engaging said
nected together at their outer ends.
Y
guides to urge said horizontal member and
9. In a scaffold adapted to be erected adjacent
bracket into frictional clamping engagement with
to a building wall, a vertical post spaced from
sa'id post.
said wall, a horizontal platform support in end
engagement with said post, a fitting carried by the 40
CLARENCE lW. HUSHOWER.
,
‘i
van",
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