Jan. 4, 1949.
l
J, B. FRASER
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2,458,155
MOLD FOR MOLDING CONCRETE STRUCTURAL UNITS
Filed Sept. l5, 1945
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2 Sheets-Sheet l
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jan. 4, i949.
J. B. lFRASER
2,458,155
MOLD FOR MOLDING CONCRETE STRUCTURAL UNITS
Filed Sept'. 15, 1945
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2 Sheets-Sheet 2
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2,458,155
Patented Jan. 4, 1949
UNITED STATES PATENT OFFICE.,
2,458,155
MOLD FOR MOLDING CQNCRETE
STRUCTURAL UNITS
James B. Fraser, Fort Lauderdale, Fla.
Application September 13, 1945, Serial No. 616,098
3 Claims. (Cl. 25-121)
2
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The invention relates to‘mold false work con
struction, and more especially to a knock-down
molding form for concrete or other plastic work.
The primary object of the invention is the pro
vision of such a structure in which steel, wood,
plastic, or any other type of material rigid enough
to hold its shape can be molded. A further object
is the provision of such a mold which may be
handled by unskilled labor in assembly, use and
Figure 5 is a view partly broken away of another
Shaper member of the form.
Figure 6 is a view partially broken away of a
Shaper member of the form adapted particularly
to be used in opposite relation to the Shaper
shown in Figure 5.
Figure 7 is an end elevation of the structure in
a set-up condition for the molding operation.
Figure 8 is a side elevation of the structure
disassembly, the structure being designed for a 10 shown in Figure '7.
Figure 9 is a View similar to Figure 7 showing a
uniformly dimensioned piling of any desired shape
or size.
plurality of shapers in molding position.
Figure 10 is a View similar to Figure 7 showing
Another object of this invention is to mold a
a shaper in molding position after certain lower
ñrst concrete block and to mold a second juxta
posedvblock, if desirable, in the same apparatus 15 blocks have been formed.
Figure 11 is a fragmentary elevation partly in
without removal of the first block.
vertical section through one of the struts and the
Another object of the invention is the provision
upstanding posts or uprights of the form.
of a structure of this character which assures uni
Figure 12 is a fragmentary exploded perspective
form finished product and eliminates the danger
of the forms bulging, breaking loose or shore 20 View showing a base sill and upright or post in at
tachable relation to each other.
slipping.
`
Figure 13 is a fragmentary perspective View
Another object of the invention is the provision
showing the upright or post and base sill inter
of structure of this character built to precision
connected with each other.
measurements, and so constructed that in assem
Figure 14 is a sectional view illustrating details
bly all surfaces must be thoroughly cleaned before
of the Shaper rails and fasteners therefor.
being put together in order to permit the bolting
Similar reference characters indicatev corre
of the cages and forms into proper relation thus
sponding parts throughout the several views in
securing a uniform cast product. A further ob'
the drawings.
ject is the provision of a structure which can be
Referring to the drawings in detail, the false
assembled and disassembled with ease and dis 30
work construction or universal molding form con
patch, there being no warping, twisting, splitting
stituting the present invention, comprises a plu
or other damage to the structure in its use and
rality of inverted substantially U-shaped or chan
which requires a minimum of support and bracing
neled sill pieces Iil which are adapted to be sup
for servicing.
A still further object of the invention is the 35 ported in spaced relation to each other superim
posed upon a foundation or other supporting
provision of a structure, of this character which
medium which has been pre-prepared level and in
is simple in construction, reliable and efñcient in
the top area or crown of each sill piece adjacent to
operation, strong, durable, and positive in opera
each end thereof is a cross slot l I for the detach
tion, and inexpensive to manufacture and install.
With these and other objects in view, the in 40 able interfitting therewith of an upright or post
I2, which can be of any length or height. At the
vention consists in the features of construction
and combination and arrangement of parts, as
attaching end of the latter is a tongue I3 having
the piloting tip I4 angled slightly'to the plane of
will be hereinafter more fully described and illus
trated in the accompanying drawings, which dis
the tongue I3 which is initially fitted into the slot
I I for the interñtting of the tongue I3 into the sill
close the preferred embodiments of the invention,
and pointed out in the hereunto appended claims.
piece, as best seen in Figures l2 and 13 of the
In the accompanying drawings:
Figure 1 is an exploded elevation of one of the
uprights or vertical members of the form con
drawings.
Each upright or post on opposite side edges
thereof has outturned reinforcing flanges I5,
50 while centrally of such upright or post is a row
structed in accordance with the invention.
Figure 2 is a side edge View thereof.
of longitudinally directed spaced holes I6 for
selectively accommodating a pair of fasteners
Figure 3 is an exploded detail view of one of the
such as nut carrying bolts I'I which detachably
base sills of the form.
fasten the end head plate I8 next to such upright
Figure 4 is an exploded detail view of one of
or post thereto in a desired adjusted position.
the cross struts for the form.
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2,458,155
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These head plates l 8 are terminals to a cross strut
placed thereon. This operation is then repeated
I9 and are used above the molding work to hold
until the desired number of blocks are poured.
the opposed uprights or posts in vertical parallel
The parts of the structure can be made from
spaced relation to each other, as best seen in Fig
steel, wood, plastic, or any other type of material
ures 7, 8, 9 and 10 of the drawings.
C) «that is rigid enough to hold its shape and can be
Adapted to be located between the uprights or
used in connection with cage fastening, the steel
posts l2 are shaper rails 29, which in their length
construction being recommended because of du
correspond to the length of the work to be exe
rability, economy of maintenance and handling.
cuted and these rails 2U are formed with tongue
From the foregoing it will now beA seen that
and groove formation areas 2l and 22, respec lC there is herein provided a device accomplishing
tively, for corresponding formation on or in a
all the objects of this invention, and others, in
concrete mass 23 to be shaped and molded by such
cluding many advantages of great practical utility
rails 20. The rails 20 are in horizontally aligned
and commercial importance.
relation with each other and in their opposed
As many embodiments may be made of the in
spaced disposition, one to the other, are detach
ventive concept, and as many modifications mayv
ably fastened in place to the uprights or posts I2,
be made in the embodiment herein shown and
described is to be understood that all matter here-l
in is to be interpreted merely as illustrative and
each fastener or stud 24 therefore being in selec
tive engagement in a hole I6 adapted to accom
modate such fasteners or studs for the securing of
the rail in working position within the set-up
structure, as best seen in Figures 7, 9 and 10 of
the drawings. The studs 24 are detachably con
nected to the posts by any suitable means such
as the nuts (unnumbered) seen in Figure 9.
not in a limiting sense.
What is claimed is:
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1. A structure' of the kind described comprising
a base sill, a pair of upright posts having a plu
rality of apertures therein and having separable
interlocking engagement with the base sill, a ver
As disclosed in Figure 7 of the drawings, the
set-up structure constituting the present inven
tion is positioned for the molding and shaping of
tically adjustable cross strut secured to the posts
and located entirely >between the same, shaper
pieces having tongue and groove rwork contacting
surfaces and studs opposite said surfaces> for pro
trusion through said apertures, said shaper pieces
a concrete slab piling above a previously Vformed
slab denoted generally at 23, while in Figure 9
two of the molds are positioned for the molding 30 held by said posts between the same for concrete
of two of the concrete slab pilings in stacked ver
molding thereby, fasteners detachably connecting
tical relation to each other, these slabs being
said cross strut to said posts, and fasteners de
superposed with relation to one another and are
tachably connecting said studs to said postsin
molding disposition to each other.v
individually molded step by step in the use of the
structure. Figure 10 disclosed a mold, iilled with
concrete, positioned on top of two previously
formed slabs, and the 'three figures disclose the
wide variety of adaptation to which the mold can
2. The combination of claim 1 and said base
sill having slots therein, said upright posts having
tongues positioned in said slots.
3. The combination of- claim 2 and piloting tips
on said last named tongues for initial fitting in
bev put. Obviously an entire stack or column of
slabs can be molded simultaneously by the use of
a large number of molds with conventional spacer
plates therebetween, or in the interest of economy
a, single slab may be molded at a time and per
mitted to harden, the mold then being removed
from the hardened or partially hardened slab and
positioned thereabove for the forming of the next
slab. When an entire stack of molds are made
simultaneously, an amount of concrete may be
poured in the appropriate manner and a spacer
said slots.
.
JAMES B. FRASER.
REFERENCES CITED
The following references are of record in the
ille of this patent:
Y
UNITED STATES PATENTS
Number
1,651,041
Name
Date
Richards __-_______; Nov. 29, 1927