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Патент USA US3085591

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April 16, 1963
E. D. MCDONOUGH
3,085,586
FOLDABLE TENT STRUCTURE
Filed July 5, 1960
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36»
-32a
3l“
0
2 Sheets-Sheet 1
April 16, 1963
E. D. McDoNouGH
3,085,586
FOLDABLE TENT STRUCTURE
Filed July 5, 1960
_g
y
2 Sheets-Sheet 2
United States Patent O
1C@
3,085,586
Patented Apr. 16, 1963
2
1
this purpose, the framework is formed by a pair of U
shaped frame sections designated l10 and 11. The frame
sections 10 and 11 are similarly constructed and the same
numerals followed by the subscript (a) are used -to desig
nate the parts ofthe frame section 11 which correspond to
similar parts of the frame section 10. The frame sections
10 and 11 respectively include bridge portions 12 and 12a
3,085,586
FÜLDABLE TEN'I` STRUCTURE
Elon D. McDonough, Rockford, lll.
(Box 68, Shirland, Ill.)
Filed `l'uly 5, 1960, Ser. No. 40,709
7 Claims. (Cl. 13S-4)
This invention relates to portable structures of the type
and spaced legs 13, 13a and 14, 14a adjacent opposite ends
employing a foldable frame and a ilexible covering for
of the respective bridge por-tion. When assembled, the
the frame.
10 legs 13a -and 14a of the frame section 11 extend crosswise
An important object -of this invention is to provide a
of the legs 13 and 14 respectively yof the frame section 10.
foldable structure which «is adapted to form an enclosure
A plurality of tie elements, herein shown five in number
for large areas, which structure is of economical and light
and designated 21-25 are connected to the bridge por
weight construction and which >can be readily collapsed
tions -12 and 12a and extend therebetween.
and disassembled for compact storage and transportation.
The bridge portions are advantageously formed with
Another object `of this invention is to provide a foldable
an arched or a gable type configuration -to adapt the same
Kstructure having a frame movable from a collapsed posi
to span large distances, and as shown herein the bridge
tion on the ground 'to an erected position and a flexible
portion 12 and 12a respectively include spaced longitudi
covering for the frame and which is so arranged as to
nal members 2S, 28a and 29, 29a andk interconnecting
enable the flexible covering to be applied to the frame 20 cross members 31, 31a and 32, 32a. The longitudinal
while it is collapsed on the aground, to be elevated with
and cross members are conveniently formed of tubular
the frame and thereby facilitate mounting’of the ilex
stock and may be interconnected in any desired manner.
As specifically disclosed herein, corner brackets 33, 33a
A more particular object of 4this invention ‘is to provide
and 34, 34a are formed with sockets for receiving the
a foldable structure having a pair of generally U-shaped 25 longitudinal and cross members, .and the member-s are
relatively movable frames having the bridge portions
detachably held in the sockets by pins or set screws desig
thereof interconnected by one or more tie elements for
nated 35 and 36 in FIGS. 3 and 4. The cross members
supporting a covering, yand which frame is -arranged so -as
31 and 31a are straight,-while the cross members 32 are
ible cover.
to maintain the tie elements under tension as the frames
arched or gabled andslant upwardly to a centralridge or
are moved from a collapsed to an erected position, to 30 peak. The cross members 32 and 32a are herein shown
thereby provide proper support for the flexible covering.
formed in two .sections which are interconnected by ridge
brackets 3S and 38a respectively having sockets for re
foldable tent construction which can be used on sloping
ceiving the adjacent ends of the crosspiece sections, and
pins or set screws 39' are provided for detachably retaining
surfaces and which, when erected on such surfaces, will
extend generally horizontally.'
35 the crosspiecesections assembled ion the ridge bracket.
Ye't »another object of this invention is to provide a
These, together with various ancillary objects .and ad
For reasons set forth hereinafter, at least one of the tie
elemen-ts such as 21 is formed of a non-flexible construc
tion, such -a-s a tube, »and this tie element is also con
vantages iof this invention will be more readily appreciated
as the same becomes better understood by reference to
the following detailed description when taken in connec
veniently mounted yin a suitable socket `in .the ridge
Invorder to reinforce the joints be
tion with the accompanying drawings wherein:
40 brackets 38 and 38a.
FIGURE l is a top plan view of a foldable tent struc
ture with the flexible covering broken away `and shown
in phantom to illustrate details `of construction;
FIG. 2 is a Iside elevational view of the foldable'tent
structure;
-
`
FIG. 3 is a fragmentary top plan view of the foldable
tent structure on a larger scale than in FIGURE -l to
illustrate details of construction;
FIG. 4 is a fragmentary side elevational view of the
foldable tent structure on a larger scale Ithan FIG. 2 to
illustrateconstruction details;
'
~
FIG. 5 is a fragmentary view taken on the plane 5--5
of FIG. 2, and
’
'
FIG. 6 is a fragmentary sectional view ltaken on the
plane 6_6 of FIG. 2.
.
>
’
The foldable tent structure `of the present invent-ion
is- generally `adapted for use in providing a somewhat tem
porary closure for relatively large areas and may, for ex
tween the Various tubular sections and the brackets, a
reinforcing plug or -tube 30 is preferably inserted into the
endsof the tubular sections. The other tie elements des
ignated 22-25 are preferably of a ñex-ible construction,
such as cable, which can be wound into a compact roll
for storage and transportation. In order to equalize the
tension on the several tie elements 22-25, the latter are
formed from a continuous cable which is terminally at
tached by fasteners 43 to the bridge portions of the frame
sections and is entrained intermediate its ends over pulleys
44 also carried by the bridge portions.
Brace elements 45 and 45a are connected to the ridge
brackets 38 and 38a respectively, in suitable sockets
therein, and extend through the respective corner brackets
55 3'3 and 33a to reduce lateral ydeflection of the cross mem
bers 3-2 and 32a due to the tension on the tie elements 2.1~
25. The legs 13, 13a and 14, 14a are preferably of tu
bular construction and, as shown in FIGS. 3 and 4, have
ample, be used to enclose all or a large'portion of a build
a plug 51 in the upper end thereof formed with a bi
ing site to enhance the comfort of the workmen during 60 furcated end which is pivotally connected -by a pin 52
buildin-g the permanent structure and to also enable heat
to the ear `on a plug 53 extending outwardly from the
ing of 4the area to permit construction during the colder
longitudinal members 28, 28a and 29, 29a of the bridges.
months of the year.
The 'tent construction `of the present invention com
In this manner, the legs are free to pivot vertically rela
tive to the respective bridge portions so that the longi
prises a foldable frame structure, preferably formed of 65 tudinal members 28, 28a and 29, 29u of the bridges will
tubular stock, and a flexible cover of canvas, plastic or
remain substantially horizontal as the frame structure
the like which overlies »the frame structure to be‘snpportedl f J is raised or lowered.v Stop arms 55 and 55a are attached
thereby .and form a temporary enclosure. In accordance
to each of the corner brackets 34 and arranged to engage
with the present invention, the frame structure is arranged
the respective legs 13, 13a and 14, 14a, when -the bridge
so as to enable assembly of the frame on the ground andl 70 portions have `been elevated to a preselected position, to
limit relative pivotal movement Ibetween the legs and
mounting of the cover on the frame, and the frame and
bridge portion, and to also rigidify the structure.
cover thereafter elevated 'to the erected position. For
3,085,586
4
3
As previously mentioned the frame section 11 is con
structed similar to the frame section 10. However, the
bridge portion 12a differs from the bridge 12 in the pro
vision of an `oiïset designated 40a in each of the longi
tudinal members 28a and 29a. This offset, as shown
in FIG. l, is provided so that the legs 16 and 17 attached
to the bridge `11 will be spaced relatively closer than the
tive position. As shown herein, the locking pins are
mounted on a resilient leaf spring 93. The leaf spring is
pivotally mounted as by `a pin 94 on the sleeves 63 and 64
and may be swung into and out of the position shown in
FIG. 5. When in the last mentioned position, the leaf
springs yieldably urge the pins 91 into locking position.
Thus, as the cables 68 are wound on the drums, and one
or the other of the bridge portions reaches the desired ele
the latter.
vation, the locking pin 91 on the legs of that frame may
The framework is arranged to be assembled on the 10 be moved into locking position to lock the legs against
further sliding movement relative to the sleeve. There
ground with the legs 13a and 14a of the frame 11 ex
tending crosswise of the legs 13 and 14 of the frame 10.
after, as the cable is further wound on the drum, the legs
Provision is made for simultaneously drawing the lower
of the other frame will slide relative to their sleeves until
legs 13 and 14 on the bridge 10, to 'be received between
the locking pins of the last-mentioned frame are also
ends of the legs 13, 13a and 14, 14a toward each other to
elevate the bridge portions of the frames and also elevate 15 moved into locking position. With this arrangement, the
the flexible covering 61 with the bridge portions. The
elevation of the bridge portions of the frames 10 and 11
can be independently varied to accommodate non-uniform
relatively crossing legs 13, 13a and 14, 14a are preferably
interconnected to permit free relative pivotal movement
and inclined surfaces. In addition, the cranks at op
posite sides of the frames can be individually adjusted to
therebetween as well as axial sliding movement of the
legs. As best shown in FIG. 5, sleeves 63 and 63a are 20 raise one side of the `frame higher than the other, if neces
slidably supported on the relatively crossing legs and the
sary to accommodate any slope in the ground in a direc
sleeves are pivotally interconnected by means of a pin 65.
The pin 65 extends into 4bosses on the sleeves and is re
tion crosswise of the tent structure.
In order to support the sides of the covering 61, adja
tained in position by locking pins 66 which extend into
cent the corners of the frame structure, a post 98 is pref
annular grooves in the pivot .pin 65. Raising of the 25 erably provided at each corner. The posts, as best shown
in FIGS. 2 and 4, are preferably pivotally mounted by a
frame structures is effected by means of cables 68 which
pin 99 on an ear 100 attached to the underside of the
are attached as by a bracket 69 to each of the legs 13a
and 14a on one of the U-shaped frames. The other ends
corner brackets 33. The posts are thus swingable into
and out of the upright position shown in FIGS. 2 and 4,
of the cables 68 extend over `drums 71 (see FIG. 6) which
are rotatably supported by shafts 72 on brackets 73 and 30 and have feet 101 on the lower ends thereof which are
preferably longitudinally adjustable relative to the posts.
74 carried by the legs 13 and 14 of the other frame struc
ture. A ratchet wheel 75 and pawl 76 is provided for
The main weight of the frame structure and covering is
releasably .retaining each of the drums in a preselected
supported by the legs 13, 13a and 14, 14a and the posts
angularly adjusted position and thereby -retain the frames
98 are provided primarily to support the sides of the
in an elevated position. A crank 81 is detachably and 35
non-rotatably connected to the shafts 72 for rotating the
covering.
drums 71, and, preferably, the shafts 72 at opposite sides
I claim:
1. A foldable tent construction comprising first and
of the frame structure are interconnected to rotate the
second generally U-sbaped frame structures each including
a bridge portion and spaced legs, said bridge portions
drums 71 in unison. As shown in FIG. 6, lthe shaft con
nector includes a tube 82 having axially movable sec 40 each including spaced longitudinal members and first and
tions 83 at each end. The sections are yieldably urged
second cross members extending between the longitudinal
outwardly by a spring 84 and are held against rotation
members and brace elements extending from a point
relative to the tube 82 by pins 85. The axially movable
adjacent the ends of said second cross members on each
sections are detachably and non-rotatably keyed to the
frame structure to a point intermediate the ends of the
shafts 72 by pins 86 which are receivable in slots 87 in 45 respective -fìrst cross member, means pivotally attaching the
legs of each frame structure to the respective bridge
the shafts. With `this arrangement, the shaft connector
portion adjacent opposite ends of the first cross member,
can lbe detached from the Shafts 72, after the foldable
the legs of one frame `structure extending crosswise of the
building is erected, to provide an unencumbered central
legs of the other frame structure at a point intermediate
span.
The framework is arranged to be stored and trans 50 said bridge portions, means interconnecting the legs of one
frame structure with a respective one of the legs of the
ported with each of the tubular sections disassembled
other frame structure for relative pivotal and axial shift
from the various connecting brackets 33, 34 and 38 to
provide a compact package. In addition, those tubular
ing movement therebetween, an elongated rigid tie element
sections such as the tie element 21 which are relatively
extending lengthwise of the tent between the first cross
long can be formed in two or more sections which are 55 member on said first and second frame structures to main
tain said bridge portions in a generally horizontal posi
detachably connected by an internal plug or tube 50
tion, means attached to the relatively crossing legs ad
which spans the joint between the sections. The frame
jacent the lower ends for drawing the lower ends of the
work is assembled on the ground at the point of use and
the flexible covering 61 is laid over the bridge portions
legs toward each other to thereby elevate and lower the
and tie elements of the frame before the latter is erected. 60 bridge portions of the frame structures, the legs of said
The crank 81 is then manipulated -to wind the cables
first and second `frame structures shifting relative to each
other during elevating and lowering of the bridge portions
68 on the drums at each side of the frame -to elevate both
sides of the frame structure in unison. The tie element
to maintain the tie element taut therebetween, and `a cover
ing supported on the bridge portions and tie element.
21 has a fixed length and, as the cables 68 are wound on
2. A foldable tent construction comprising, first and
the drums to draw the lower ends of the legs of the first 65
and second frames toward each other, the legs will slide
second generally U-shaped frame structures each including
a bridge portion and spaced legs, said bridge portions each
relative to the sleeves 63 and 63a and maintain the tie
including spaced longitudinal members and ñrst and second
elements in tension at all times. This not only aids in
supporting the covering 61 which rests `on the tie ele
cross members extending between the longitudinal mem
ments, but also minimizes the bending moment in the 70 bers, means pivotally attaching the legs of each frame
structure to the respective bridge portions adjacent opposite
legs of the first and second `frames due to the weight of
the frame structure and covering. Locking pins 91 may
ends of the -first cross members, the legs of one frame
structure extending crosswise of the legs of the other frame
be provided on the sleeves 63 and 63a to extend into
structure at a point intermediate said bridge portions and
openings 92 in the legs of the frames to lock the legs to
the respective sleeves, when they reach a preselected rela
said bridge portions projecting outwardly in relatively
3,085,586
opposite directions from the upper ends of said legs to pro
vide overhanging roof supports at each end of the tent,
means interconnecting the legs of one frame structure
with a respective one of the legs of the other'f‘rame struc
ture for relative pivotal and axial shifting movement there
between, said iirst cross members having a gable con
figuration with the apex disposed at a level above a
horizontal plane through the pivot point of the legs to the
zontal plane through the points of attachment of the legs
lto the respective frame section, a plurality of elongated
tie elements extending longitudinally of the tent between
said top frame sections, at least one of the tie elements
being attached to said inner cross members at a point sub
stantially above said plane through the points of attach
ment of the legs to the respective frame section to main
tain the frame sections generally horizontal as the frame
sections are raised, means att-ached to the relatively cross
bridge portions, at least one elongated tie element extend
ing longitudinally of the tent between said iirst cross 10 ing legs adjacent their lower ends for drawing the lower
ends of the legs toward each other to thereby elevate the
members on said ñrst and` second frame structures at a
top frame sections while maintaining said tie elements
point adjacent the apexes thereof to maintain said bridge
under tension therebetween, and means on said top frame
portions in a generally horizontal position, means engage
sections engageable with the respective legs thereon for
able with the lower ends of the legs on said iirst and
second frame structures `for drawing the lower ends of 15 limiting relative swinging movement of the legs when the
top frame sections reach a preselected elevated position.
the legs on the íirst and second frame structures toward
6. A foldable tent construction comprising iirst and
each other to elevate the bridge portions of the frame
second top frame sections spaced apart and llocated ad
structures, the legs on said iirst and second lframe struc
jacent opposite ends of the tent yto extend crosswise there
tures shifting relative to each other during raising and
lowering of the bridge portions to maintain the tie element 20 of, said top frame sections each having spaced side mem
bers extending generally longitudinally of the tent and
taut therebetween.
spaced cross members extending between said side mem
3. The combination of claim 2 including brace elements
bers, first and second pairs of legs respectively attached
exten-ding from a point adjacent the ends of said second
to said first and second top frame sections for vertical
cross members on each frame structure to a point ad
25 swinging movement relative thereto, said ñrst pair of legs
jacent the apex of the respective iirst cross member.
on said ñrst frame section extending crosswise of respec
4. A foldable tent construction comprising iirst and
tive ones of said second pair of legs on said second frame
second top frame sections spaced apart and located adja
section at »a point intermediate said iirst and second top
cent opposite ends of the tent to extend crosswise thereof,
frame sections and being arranged for «relative pivotal and
said top frame sections each having spaced side members
extending generally longitudinally of the tent and spaced 30 axial shifting movement therebetween, said frame sec
tions p-rojecting outwardly from the ends of the respec
cross members extending between said side members, tirst
tive legs to provide overhanging roof supports at each end
«and second pairs of legs respectively attached to said íirst
of the tent, the inner ones of said cross members on said
and second top frame sections for vertical swinging move
first 4and second frame sections having a gable configura
ment relative thereto, said ñrst pair of -legs on said first
frame section extending crosswise of respective ones of 35 tion with the apex disposed at a level above a horizontal
plane through the points of attachment of the legs to the
said second pair of legs on said second frame section at a
respective
frame section, a plurality of elongated tie ele
point intermediate said tirst and second top frame sections
ments extending longitudinally of the tent between said
and being arranged for relative pivotal and axial shifting
top frame sections, at least one of the tie elements being
movement therebetween, said frame sect-ions projecting
outwardly from the ends of the respective legs to provide 40 attached to said inner cross members at a point substan
tially above said plane through the points of attachment
overhanging roo-f supports at each end of the tent, the
of the legs to the respective frame section to maintain the
frame sections generally horizontal as the frame sections
are raised, means attached to the relatively crossing legs
disposed at a level above a horizontal plane through the
points of attachment of the legs to the respective frame 45 adjacent their lower ends for drawing the lower ends of
the legs toward each other to thereby elevate the top
section, a plurality of elongated tie elements extending
framel sections while maintaining said tie elements under
longitudinally of the tent between said top frame sections,
tension therebetween, and brace elements extending from
at least one of the tie elements being attached to said inner
a point adjacent the ends of the outermost cross members
cross members at a point substantially above said plane
through the points of attachment of the legs to the respec 50 on each frame structure to a point intermediate the ends
of the respective inner cross member.
tive frame section to maintain the frame sections general
7. A foldable tent construction comprising iirst and
ly horizontal `as the frame sections are raised, and means
second top frame sections spaced apart and located ad
attached to the relatively crossing legs adjacent their lower
jacent opposite ends of the tent to extend crosswise there
ends for drawing the lower ends of the legs toward each
of, said top frame sections each having spaced side mem
55
other to thereby elevate the top frame sections while
bers extending generally longitudinally of the tent and
maintaining said tie elements under tension therebetween.
spaced cross members extending between said side mem
5. A foldable tent construction comprising lirst and
bers,
first and second pairs of legs respectively attached
second top frame sections spaced apart and located ad
to said ñrst and second -top lframe sections for vertical
jacent opposite ends of the tent to extend crosswise there
of, said top frame sections each having spaced side mem 60 swinging movement relative thereto in planes extending
longitudinally of the tent, said first pair of legs on said
bers extending generally longitudinally of the tent and
first
frame section extending crosswise of respective ones
spaced cross members extending between said side mem
of said second pair of legs on said second frame section
bers, tirst and second pairs of legs respectively attached
'at a point intermediate said frame sections and being ar
to said first and second top frame sections for vertical
inner ones of said cross members on said iirst and second
frame sections having a gable configuration with the apex
swinging movement relative thereto, said first pair of legs 65 ranged for relative pivotal and axial shifting movement
therebetween, said frame sections projecting generally
on said first frame section extending crosswise of respec
horizontally, outwardly from the upper ends of the respec
tive legs to provide overhanging supports at each end of
the tent, said frame sections each having a portion dis
frame sections and being arranged for relative pivotal
and axial shifting movement therebetween, said frame 70 posed at a level above a horizontal plane through the
point of attachment of the legs to the respective frame
sections projecting outwardly from the ends of the re
section, a plurality of elongated tie elements extending
spective legs `to provide overhanging roof supports at
longitudinally of the tent between said top frame sections,
each end of the tent, the inner ones of said cross members
at least one of said tie elements being attached to said
on said first and second frame sections having a gable con
figuration wvith the apex disposed at a level above a hori 75 frame sections at a point substantially above said plane
tive ones of said second pair of legs on said second frame
section at ra point intermediate said first and second top
3,085,686
7
through the points of attachment of said legs to the respective frame section, and means attached to the relative1y crossing legs adjacent their lower ends for drawing the
lower ends toward each other to thereby elevate the top
frame sections.
y
,
8
1,642,267
1,687,722
1,744,146
1,843,312
ä
Rush _____>__` _________ __ Sept. 13,
Goldberg et `al _________ __ Oct. 16,
Seaman ______________ _.. Jan. 21,
Ames ________________ _- Feb. 2,
1927
1928
1930
1932
2,151,908
Gottlieb _____________ __ Mar. 28, 1939
2,513,411
Heil __________________ __ July 4, 1950
References Cited in the ñle of this patent
2,818,567
Oliver _________________ -_ Jan. 7, 1958
UNITED STATES PATENTS
2,829,928
Callaway _____________ __ Apr, 8, 1958
686,615
Germany _____________ -_ Jan. 12, 1940
29,542
223,687
Burton _______________ __ Aug. 7, 1860 110
Whitehead ____________ __ 1611.20, 1880
FOREIGN PATENTS
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