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Патент USA US2091923

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Aug. 31, 1937.
Filed NOV. 2, 1936
J6)"- _ ____________‘____________i
Patented Aug. 31, 1937
William Theodore Hardy, deceased, late of Dallas,‘
gem, by Myrtle Hardy, administratrix, Dallas,‘ ‘
Application November 2, 1936, Serial No. 108,879'
3 Claims.
(01. 25-1315) I
This invention relates to a collapsible form or
Figure 4 is a top plan ‘view. of.‘ the sill elements
mold for the building of culverts, drainage or
storm sewers, bridges or tunnels or for any other
disposed in jacking-up position in full linesand
in dotted lines removed from such-“position by a
purpose for which the form is applicable.
projecting and retracting tool,’
The object of the invention is to provide, in
a manner as hereinafter set forth, a form consist-
Figure 5 is a. side elevation.‘ of the form of re- 5
movable combined coupling and bracing element
of a ofseries
of expeditiously
re-usable, separate
disassembled when occasion requires.
Figure 6for
is the
a view
to -Figure-5., of~ the
form of removable combined coupling'and brace
A further object of the invention is to provide,
in a manner as hereinafter set forth, a form
ing members employed for the sill elements, and 10
Figure 7 is a perspectivevviewv'of 'the'sill pro,-.
consisting of a series of re-usable, separate ele-
jecting and retractingtool. /
ments of any suitable material such as metal
or wood and with the elements so constructed as
r to enable the assembling thereof in forming or
A collapsible form or mold, in accordancewith
this invention‘ includes a pair of oppositely‘ dis-I ‘V
posed body sections 8, 9, a set of combined ‘con
molding position without the employment of
driven holdfast devices entering said elements.
A further object of the invention is to provide,
pling and bracing elements ‘l0 for the body sec
tions 8, 9, a pair of oppositely disposed sill jeleév
ments I I, I2 substantially of'the same length as
in a manner as hereinafter set forth‘, a form or
that of the body sections, and a pair of combined
mold including a pair of oppositely disposed re-
coupling and bracing members. 13, I4 vfor the I‘
leasably interengaging body sections and a pair
elements ll, l2.
elements for jacking up the body sections in in-
length, width and height depending upon the
terengaged relation. .
size of the structure to be formed.“
of oppositely disposed removable wedge-like sill
3 '
The body sections 8, 9 are to be of‘ the desired
, A further object of the invention is to sim-
U ‘
The bodyfsection 8 includesfa‘ plurality. of up; '
plify the use and construction of forms, whether
standing parallel spaced internal ribs or supports
they be made of wood or metal, for the building
l5 of like form. Each rib l5 consistsof a body
of culverts, drainage, or storm sewers, bridges
part l6 of ' the. desired width,‘ thickness and
and tunnels of any size opening; for reducing
O the cost of operation; and for increasing the eflie
ciency and rendering them easier to be manipulated, thereby saving time, trouble and money
for those who desire to build culverts, drainage
height, disposed units bottom edge H. The body ‘30
part l6 includes a straight outer side edge I8,,a '
rounded upper edge I9 extending inwardly, from
its lower to its upper end, and an inner side'eldg-el
The latter is formed ‘of'_ an‘fupper and alower
or storm sewers, bridges and tunnels of any size
straight edge'portion 20,.2l respectively'disposed , 5
To the above ends essentially and to others
which may hereinafter appear, the invention consists of the novel construction, combination and
arrangement of parts as will be more speci?cally
by an inwardly extending V‘-shaped:e_dge_, portion
22 having one end merging into thei'lowe‘r' endof
edge portion 20 and its other end merging into
the upper end of edge portion 2Yl.,' Theinner side
in parallel endwise spaced relation and'separated
O described and are as illustrated in the accom-
panying drawing wherein is shown an embodiment of the invention, but it is to be understood
that changes, variations and modi?cations may
be resorted to which fall within the scope of the
a invention
In the drawing:-—
as claimed.
in a direction towardsedge its
lower end into the, inner. end of: edge ll, vThe
upper end of edge portion 23 vmerges ,intogthe
lower end of edge portion. 2!. The edge portions 45
24 is2| ofare
of thelength'than“
same ‘length.edges
{I11 and I9.
Figure 1 is an isometric view of the‘form broken
away showing the interior thereof,
Figure 2 is an end view of the form prior to
the complete jacking-up'of the body sections,
Figure 3 is an end view of the form with the
body sections completely jacked upxand with the
form shown in position for forming the superportion of a tunnel upon the bottom of the latter
and with the tunnel indicated in dotted lines,
edge also includes anvedge portion 23 inclining ‘
The inner end of edge I1 is arrangedabo‘ve the
lower end of edge l8.
The edge l'l inclines _v
downwardly from its inner endyto the lower end ’
of edge [8. Owing to the?manner in which'the
edges of the rib l5 are setup, the rib increases
in width from its bottom to its top. v,The V-shaped
edge portion 22 provides a groove-"on ‘and near I
the upper end ofv the, inner edge of the‘ rib. I‘ The 55
latter near its lower end and :in‘ proximity to
edge I‘! is formed with an opening 24. Secured
to the edges N3 of the ribs I5 is a check plank
25 disposed on its bottom edge and with the
latter inclined at the same inclination as and
forms a flush continuation of the bottom edge I1
of rib I5.
Secured to the edges I9 of the ribs I5
are abutting crown planks 26.
The body section 9 is constructed in the same
manner as the body section 8 with this exception
10 that the ribs or supports 21 of section 9 are pro
vided on their inner edges with V-shaped exten
sion 28, in lieu of the V-shaped inner edge portion
22 which provides the groove. When the body
sections are set up in oppositely disposed relation,
15 the extensions 28 are seated in the grooves formed
by the V-shaped edge portions 22. Otherwise
than that as stated, the construction of body
section 9 and its ribs 21 will be the same as that
of body section 8. The openings in ribs ‘21 are
20 indicated at 29. The cheek plank and the crown
planks of body section 9 are indicated at 30, 3I
respectively. The outer side edge, top edge, bot
tom edge and inner side edge of the ribs 2‘! are
indicated at 32, 33, 34 and 35 respectively.
Each combined coupling ‘and bracing element
I0 is of yoke-shaped contour and is formed of a.
metallic rod having “its end terminal portions 36,
31 disposed at right angles to its intermediate
portion 38. The latter is of materially greater
30 length than the portions 36, 31.
The sill elements I I, I2 are of like form and
each consists of an elongated bar 39 of Wedge
shaped contour. The bar 39 has a ?at bottom
face 40, an outer side edge M, an inner side edge
35 42 of greater height than the edge M and an
upper face 43 inclining downwardly from edge
42 to‘ edge ‘4|. The inclination of the upper face
43 of a sill corresponds to that of the bottom edge
of a rib. The sill II is formed with a pair of
40 spaced aligned openings 44, 44*‘. Each opening is
arranged ‘between ‘the transverse median and an
end of the sill II. The sill I2 is formed with a
pair of spaced aligned openings 44, 45a and each
opening in sill I2 is arranged between the trans
45 verse median and an end of sill I2. The openings
44 are to align and the openings 45*1 are to align
for a purpose to be referred to.
The combined coupling and bracing members
I3, ‘I4 are of like form and each corresponds in
50 construction to any one of the elements I 0, with
this exception, that they are of less length and
of greater height than that of an element I0.
Each of the members I3, I4 is formed from a me
tallic rod having its end terminal portions 45, 46
55 disposed at right angles to its intermediate por
tion 41. The latter is of materially greater length
than the terminal portions 45, 46.
With reference to Figure 7 there is illustrated
by way of example a tool for shifting the sill ele
.60 ments to and from their position (Figure 3) of
jacking-up the body sections ‘8, 9. The tool is in
dicated generally at 48 and it includes a cross
head 49, a pair of oppositely disposed shifting
members '50, SI of angle contour extending over
v65 and ,pivotally connecting at their inner ends with
the ends of cross head 49, as at 5.2, 53, and a lever
arm 54 integral at its inner end with and offset
with respect to the upper face of cross head 49,
as at 55.
When using the form, the body sections 8, 9
are arranged in interengaging relation over the
base 56 (Figure 2') of the structure which is to
be formed. The base 56 is on the bottom of the
excavation or on what would be the supporting
75 means for the structure. The body sections 8,
9 are then coupled and braced by the elements
I 0 which removably engage in the openings of
ribs I 5, 27. When the body sections are arranged
in the position aforesaid, they are disposed upon
the sills II, I2 with the inner part of the bottom
edges of the ribs I5, I1 positioned on the lower
part of the upper faces of the sills, as is shown
in Figure 2. The tool 48 is ?rst engaged in the
aligned openings 44 and then operated in either
direction on its center whereby the left ends 10
of the sills will be moved to the position as shown
at the left of Figure 1 or as shown in Figure 3.
The tool 48 is then engaged in the aligned open
ings 45a and then operated in either direction on
its center whereby the right ends of the sill will
be moved to the position shown at the right of
Figure 1, at which time the body sections will
be jacked up to the position shown in Figures 1
and 3. The length of the lever 54 of the tool 48
is such as to clear the outer'ribs of the sets of 20
ribs on the operation of the tool 48. The open
ings 44, 44a are spaced inwardly a substantial
distance from the end marginal portions of the
upper faces of the sills. The outer ribs of the
sets are mounted on said marginal portions and 25
the spacing of openings 44, 4411 as aforesaid pro
vide a clearance for lever 54 of tool 48 on the
operation of the latter. After the sills have been
shifted to the position (Figure 3), the tool is re
moved and the members I3, I4 are mounted in
the opening of the sills. The balance of the
structure, indicated at 51 (Figure 3) is then
formed. When the structure has been completed,
the elements I0 and members I3, I4 are removed,
the tool again is used to shift the sills from jack 35
ing-up position with respect to body sections 8,
9 which allows for these latter to be lowered. I
After said sections have been lowered they are
separated, after which the sills, elements I0,
members I3, I4 and sections 8, 9 are removed 40
from the structure.
What is claimed:
1. _A form for the purpose set forth comprising
a pair of upstanding oppositely disposed inde
pendent body sections having internal coacting
inherent means to provide for the interengage
ment thereof in abutting relation at their upper
portions of their inner faces and each including
internal spaced parallel upstanding ribs carry
ing an external cheek plank and a set of external (50
crown planks, each of said ribs having its bot
tom edge inclined. downwardly towards its cheek
plank, oppositely disposed slidable sills of wedge
like contour for positioning throughout against
the bottom edges of and for jacking up said sec
tions in interengaged positions, a set of spaced
combined coupling and brace elements trans
versely disposed relative to said sections and hav
ing angularly disposed end terminal portions re~
movably mounted in said ribs, and spaced com 60
bined coupling and brace members transversely
disposed relative to and having angularly dis
posed end terminal portions removably mounted
in the tops of the sills between the ribs.
2. A form for the purpose set forth comprising x65
a pair of oppositely disposed independent body
sections, each including a plurality of parallel
spaced upstanding internal ribs, an external
cheek plank and a
planks anchored to
including an inner
portion formed of
aligning superposed
plurality of external crown
the ribs, each of said ribs 70
side edge having its upper
a pair of spaced endwise
straight parts and its re
maining portion inclining outwardly from the
lower end of the lower one of said straight parts, 75
each of said sections having its lower side in
clining downwardly from its inner side, a pair
3. The invention as set forth in claim 2 hav
'ing said ribs formed with horizontally disposed
apertures adjacent the inclined portions of the
of bodily slidable oppositely disposed wedge
inner side edges thereof, said sills formed with
shaped sills for removably bearing against said vertical openings, a plurality of spaced parallel
lower sides to jack up said sections in upstand
yoke-shaped combined coupling and bracing ele
Di ing position with straight parts of the ribs of one
ments removably engaging in said apertures, and
section abutting straight parts of the ribs of the a plurality of spaced parallel combined coupling
other section, the inner side edge of each of the and bracing elements removably engaging in
ribs of ‘one section being formed with a groove
opening between the straight portions thereof, said openings.
and the inner side edge of each of the ribs of the Administratrix of the Estate of William Theodore
other section being formed with extensions be
Hardy, Deceased.
tween the straight parts thereof for seating in
said grooves when said sections are jacked up.
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