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Патент USA US2406587

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Aug. 27; 1946.
_ 2,406,587
_ ,
' Filed May 10, 1944
. 17113.2
1/Aco5 61 COOPER
Patented Aug. 2?, 1946
Denice , - '
3'iClzifIili1's. (Cl. 220-34!)
‘This invention=relates't?mproVements‘in‘elec- _
‘tfiba’iliswi‘tch'and “outlet box'lésr
Cally to mountings thereto‘;
.- ,
-When-wiring"'a new fbuildingestructure for elec- , _
itr'icityfit is thepra'c'ti'ceofthe'electric'an' to' mount '“
the various iWeill ‘switch ib‘oxe's "and ' outlet boxes
"illustrateii ‘in “Figures "1 ‘to "ll iIir'iclusiv'e, ‘the rm‘;
‘b‘ jisltan‘attachingr'and ‘supporting bracket jl?
‘constructed ‘of "a isin‘gl'e length of "flat bendable
‘reach "the surface, thus l‘imparting{an untidya'pl
‘metal. 7 The‘braoket 15 ‘includes a body portion
‘adjusted to ‘present tithe ‘open. front "of the j'box
'flus‘h‘wit'h the 'out'ersurfaceiof a Wall ‘or ceiling I
after it ‘has been attached ‘to its "support.
Another'ifeature ‘of the invention is to twine “
an attaching 5means for la’cljustahly mountin'gh‘a‘n
"electrical switch or outlet 'box upon “its, ‘support
‘without ‘sacri?cing it’h'e ?re protective character-,
"11 ‘o'f”a“leng'th"greater ‘th'an’the distance’betw'een
'the"sl"ots v‘l"5'—-‘I’5 ‘antlfof 'a 'v'vidth less ‘than'th'e
i-l'ength “0f the ‘SI'OUISR *Integr‘al "With ‘the vEl’ldS “Of
right angle therefrom ‘are flanges ‘l'_8y—'-f|j8. In
ite'gralfwith ‘the ?anges 118-48 and exten'giing-in
"opposite ‘directions rare attaching ears Ijl9~_"I|-I9,
ithei‘same 'b'e'ing. parallel “to 5the "body portion >11
"and ‘outwardly *o'?'s‘et relative ‘thereto 'by 5the
‘flanges T8418. “The “corners off each "ear‘l9 ‘are
‘bent oiitwariily ‘to ‘provide ‘pointed ‘prongs 20
istics of the box ‘as Lspe‘ci'?e‘d floy the l’?re ‘un‘de‘r-s
A ‘further feature of the iiiveiit'ion'res‘ides Ema
bracket mountingiifor :ereetnen - switch ‘and mit
‘le't boxes which-‘may b‘e i‘?xe‘d-ly iattaclfed‘inian
initial approximate position‘ upon "its l's‘up‘poftlanii
subsequently adjusted to ‘an #arcua't'e v?nal ‘pose
"t-i‘on without/disturbingtheattaehing means.
j’téi‘s/and fatjprés'entto theif'o‘rm ofmy invention I
and ‘re‘arwar'dly "iiire‘étion.v
"pe'aranc'e ‘to the I-w'all "or ceiling structure. ‘It
V _ fslici'ablyeupportedjby"the'slotted‘wall "-|-‘|_ "of'tIhe
t'end beyond ‘the ‘surface "thereof, or may not
"flat “opposedside “walls "l*I-—'l I, ‘a hottomI‘Iw‘allI 1‘2,
it'o'p "wall “l‘3, and ‘rear "Wall ‘M. ‘Gne ‘0t fthe side
‘Walls "H "is ‘provided ‘with Ispaced parallel jslIo'ts
15-15, ‘the "js'pa’m'e ‘being elongated in a {forwardly
‘of'a‘wallor ceiling is ?xiishédQthe‘boxmay exe
“shape and’open'at it‘s'TroIn'tI The'box 10 includes
flush with ? the ‘wall - or‘ ceiling ?nishing material,
Yletibcxesi'b'y which ‘the 5box may Lhe accurately
fa'l switch "box. The ‘boX "FBIv Jis vjrectangnla'rI'Iin
"therefore ‘it 5is difficult to "'dorrectly "e‘s‘ti'matej‘the
distance that ‘the box 's'houlid'iproject from 1it's
'support_.'>with the result ‘th'a?whe'n‘the building
is itherefore‘th‘e principal object ‘of =‘th‘e‘invene
\ ‘ ‘Referrin‘g“to'ithe ‘drawing "by ‘reference :oha
1 merarmeesignates a conventional‘electricjalmét
in their respective ‘positions memo the ‘appli-'
cation of plaster, ‘plaster vb‘o‘arc‘i, (‘or other'thickt-~
ness of ?nishingmaterial "to ‘a wall ‘or ‘ceilin'g.
1It is desired that‘the‘front i'facejo’f "the box vhe
itio'n ‘to provide'a mounting ‘for switch and out
:view :taken eapprozii'mately 6:11 the "line 84-6 ‘er
”2’0 which areitlriven ’i'nt‘ofa 'wooden support to
initially ‘secure ‘the ‘bracket in ‘position. 'E‘aeh
'earilai pi‘dvi?ectwith‘a‘nairopenirig 21 ‘to fIadili
l't'aite' _
passage “of ‘a'naiilito effecta'?nal‘attach
the?b‘ra‘ckét to‘its’support
Y ‘Freely passirfgtlirou'g‘heaéh'slo’t 'l5'is a-h'ea'ded
screw ‘2'2, "the threaded‘ shank of "which threads
‘into ‘an lopeni'ng ":23 fin the body" portion '1 ‘lfo'f ‘the
bracket. iwhere'asiv’arious typesofsc'rews 22 may
“Other features or 3the invention are 5to pro
Iviil'e Jan-adjustable ‘braéket ‘mounting for switch
and ‘outlet ‘boxes ‘which iis "simple iand inexpen-i
be use‘clffpréfer a s'erew‘h'aving a’s‘quare' or heIxIaI'gi
'onal head 21 "in Lac'itilition t'of‘a'key’ZS. By reason
's'ive of-bonstruétion'yeasy to attaoh‘to a‘sup‘port; [40 at the [?at ffac‘e‘d head of ,the'screvv II 'arn "ableto
‘and easy and convenient to ‘adjust 'when "in
‘in-see; 'a‘Wr-ench'through ‘the f‘open front of the
mounted ‘position.
box Ta'n'd. impart ‘the ‘necessary ‘turning movement
Ether “novel features of the invention ‘will
ito‘theiscrew toltigh‘t'en or‘loosen 'the‘sa‘m'e. rl‘he
box is ;of a‘si'z‘e 'th'a‘tipr‘events‘the insertion 'ofI‘a
‘come app?irent as 5the following ‘speci?cation ‘is
read in conjunction with theaccompanying draw-é 45 sere'traiive'rof aISi'Z'e su'?i‘c'ient to'reach'the kerfs
of‘the s'crewsl'forTturning thereof.
'I'i‘g'ure 1 ‘is a perspec'itve‘view ‘of an electrical
Tn -ortie'r ‘to c‘los'e'theFs'lo'ts 1 5-41 5 at an ‘times
switch ‘box ' with my ' adjustable v"mounting ‘asse;
‘regardless or the: adjusted position 'of’the bracket
velated therewith.
‘is relative to the box 419. 'I'p'rovid'e 'a pair‘df‘m'etal
Figure 2 is‘a fragmentary ertical sectional
View ‘on the ‘?nal-"2 ‘*offFi'gure
> Figure 3 vis ‘a fragmentary horizontal sectional
view “on the line ‘3+3 o'f'Figure 2.
Figure 4 ‘is ‘a detail ~horizontal sectional "view
throi‘tgh a'wallstructure “showing the switch‘boi‘r
in mounted position relative ‘thereto.
Eigure Sis aperspective View of‘fny ‘adjustahle
mounting associatedi'vvith a conventional elec
trical outlet box.
shiel'e o'r?losl'lreine?ibersi?-ézii"Whieh are-mee
1y carriedlbyfthe ‘body portion H of the-bracket;
Eachjclosu-re member 26 comprises a flat hotly
portioni'lih'tting against 'the‘bod‘y portion ~l'lIjof
thefbracket and secured thereto “by rivets 28.
The body-portions “21 of ‘the closure ‘members ‘are
provide'a with "threaded openings “23f ‘which a‘hne
with the‘ (marshes 2'3 to, "receive ‘the ‘threaded
shanks of’the serewsjz‘z. ‘Integral "With'the‘ends
of the body'portion 2‘! are inwardly o?set wing
Figure 6 is a fragmentary vertical sectional 60 extensions 2-9-29 which closely parallel the slot
ted side wall ||. The wing extensions are pro
vided with spaced weakened break away portions
30 which may be broken away by the blow of a
hammer, should the adjustment of .the' bracket
be such that portions of either‘ of the ends of
the closure members extends beyond the front
outlet box 30 may be ?nally adjusted relative to
a ceiling or wall structure and the same held in
such position by tightening the screws 40.
Whereas the bracket‘ 16 has‘ been shown as
'mounted on the side wall H of the box H], the
same may be mounted on the top wall l3 if de
or rear ends of the slotted side wall H when.v " sired for suspending the switch box from a hori
zontal support.
the box is mounted in position for use upon. a
While I have shown and described what I con
support. The closure members 26 are of such
length that the slots l5 are covered at all times 10 sider to be the preferred embodiments of my in
vention,v I wish it to be understood that such
to prevent sparks from escaping from the box
changes in construction and design as come with
when an electric switch is installed therein.
in the scope of the appended claims may be re
In Figure 4 of the drawing, I have illustrated
sorted to if desired without departing from the
the switch box II] in mounted position upon a
vertical 2" x 4" Woodencolumn support A, which 15 spirit of the invention.
_ Having thus described the invention, what I
column support forms an anchorage for a wall
claim as new and desire to secure by Letters Pat
B. It is customary when installing an electric
ent of the United States is:
lighting system in a new. building, to ?xedlyse
1. In combination, a metal electrical switch
cure the switch boxes in position before erecting
the wall B. With the screws 22 unloosened, the 20 box open at its. front and having a flat side wall,
said sidewall having spaced parallel slots therein
prongs 20 of the bracket are driven into the sup
which are elongated in a front to rear direction,
port A at the desired height whereupon the
a metal box-supporting bracket comprising a flat
bracket is in its initial stage of securement. Nails
body portion of a width less than the length of
C are now driven through the openings 2| in
the ears I9 to provide a ?rm positive attachment 25 said slots and ?atly ?tting against the exterior of
said side wall in overlying relation to the slots
of the bracket to the support. ‘ After erection of
and transversely thereof and having its ends ex
the wall B, the electrician adjusts the box ID by
tending beyond the respective slots, metal shield
sliding it forward or rearward to a position where
members carried by said body portion in overly
the open front of the box is flush with the outer
surface of the wall B. The screws 22 are now 30 ing relation to said slots, each of said shield mem
bers being of a length to close the slot at all
times within the range of sliding adjustment of
with the proper instrument, whereupon the box
the bracket, the end portions of each shield mem
is secured against movement. When the switch
her having spaced weakened portions to facili
installation is completed, an escutcheon or cover
plate D is attached to the front of the box in 35 tate the breaking off of the ends of the shield
member should the same project beyond the plane
the usual manner to close the same and conceal
of the front or rear of the box when in an ad
the joint between the wall of the box.
justed installed position upon a support, out
-In Figure 5 of the drawing, I have illustrated
wardly offset attaching ears integral with the
my invention as applied to a conventional metal
outlet box 30 having four side walls 3| and an 40 ends of the body portion and disposed parallel
thereto, and screws freely passing through the
end wall 32. One of the sidewalls 3| is provided ‘
slots and being threaded into threaded openings
with a pair of spaced parallel elongated slots
provided in said body portion, whereby said
33-33 which extends in a direction transversely
bracket may be. adjusted forwardly and rear
thereof. Carried by the slotted wall 3| is an at
wardly relative to the side wall of the box to
taching and supporting bracket 34 which com
facilitate adjustment of the same during instal
prises a single length of flat metal bent to pro
vide a ?at elongated body portion 35 which ?atly
lation of the box in arwall structure.
2. In combination, an electrical switch box
engages the exterior of the slotted wall 3| and
having a ?at side Wall, said side wall having a
which is of a length approximating the length
of said wall. Integral with the ends of the body 50 pair of spaced parallel elongated slots therein, a
supporting bracket for said box adapted to be
portion 35 are outwardly extending right angle
?xedly secured to a support including a ?at body
?anges 36—36 having oppositely extending flat
portion of a width less than the length of said
cars 31-31 integral therewith. The ears 3'|——3'| '
slots and flatly ?tting against the exterior of said
are parallel to thebody portion 35 and have their
side wall in overlying relation to the slots and
corners bent outwardly to provide pointed prongs ,
transversely thereof, shield members ?xedly car
38. The body portion 35 is provided with thread.
ried by said body portion and having free flat
ed openings 39-39 which register with the slots
end portions extending from the opposed side edges
33—33 to receive the threaded shanksof headed
thereof in’ overlying relation to the respective
screws 40. The shanks of the screws freely pass
through the slots 33 with their heads disposed 60 slots, each of said. shield members being of a
length to close its related slot at all times within
within the outlet box. By loosening the screws
the range of sliding adjustment of the box rela
4|], the outlet box 30 and bracket 34 may be slid
tive to the bracket, and headed screws freely
relative to each other for. adjustment relative to
passing through the slots and threaded into
a ceiling or wall structure when the'outlet box
is installed for use. Initially, the prongs 38 are 65 threaded holes in said body portion.
3. In a combination as set forth in claim 2 in
driven into a support, after which nails are driven
which the free end portions of each shield mem
therein through openings 4| in the cars 31. The
ber has spaced weakened portions to facilitate
ears 31-31 clear opposed walls 3| of the outlet
the breaking off of the ends of the shield mem
box 30 so that there are no obstructions which
ber should the same project beyond the plane of
might interfere with the hammering of the ears
either of the ends of the box when in an adjusted
to-drive the prongs into a support nor with the
installed position.
driving of nails through the openings 4|. After
the bracket 34 has been secured to a support, the
turned to tightening position by turning them
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