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Dec. 31, 1946.
'
2,413,415
A_ OLSON ~
CONCRETE FORM TIE AND SPACER
Filed March 31, 1945
127217512 far
I ‘EU-7.1751- [7/5012
Z757 7%% @?ZZMZw/M‘ ' 537275
2,413,415
Patented Dec. 31,’ 1946
UNITED STATES PATENT OFFICE
2,413,415
CONCRETE FORM TIE AND SPACER
August Olson, Palatine, Ill.
’
Application March 31, 1945, Serial No. 585,829
5 Claims. ((51. 25—1s1>
1
-
This invention relates to a tie and. spacer de
vice for concrete forms and the like. The inven
tion more particularly relates to a tie and spacer
device formed of metal wire provided at its ends
with pairs of spaced loops, which end loops are
2
On the drawing:
Figure 1 is a broken isometric view of a set of
concrete forms or the like with which are illus
trated tie and spacer devices of my invention co
operatively associated with lock bars to hold such
adapted to be inserted through pre-formed open
forms in vertical aligned parallelism.
ings in the wood forms used in the laying of struc
tural concrete.
In accordance with my present invention, the
end loops of the wire tie and spacer devices are
of such width as to require a partial Collapsing
‘of the loops when inserted through the pre
Figure 2 is a broken, fragmentary sectional
view with a tie and spacer device of my inven
tion shown in elevation.
,
Figure 3 is a fragmentary, detail sectional
view showing by means of dotted lines the opera
tion of inserting a looped end.
Figure 4 is a plan View of the preferred form
formed openings in the forms, whereupon after
of tie and spacer device of my invention.
such insertion the inherent resiliency of the loops
is such as to cause the loops to expand back to 15 \Figure 5 is a plan view of a modi?ed form of
my invention.
their normal widths and thus frictionally engage
As shown on the drawing:
the peripheries of the openings or holes in the
The reference numeral l0 indicates a concrete
forms. As a result of this construction, the tie
form, which may be of metal but is customarily
and spacer devices of my invention facilitate the
setting up of concrete forms since after the end 20 of wood. In accordance with my present in
vention, each of the concrete forms I0 is provided
loops have ‘been inserted through the correspond—
with a plurality of openings I I adjacent the edges,
ing holes or openings in the spaced forms, the
such as the edges l2 and I3, that are to abut each
forms are then practically self-supporting in that
other when the forms are set up in spaced ver
they are held by the devices in properly spaced
25 tical position for the pouring of concrete, or the
vertical parallelism.
like, therebetween. While different lengths and
The devices of my invention also cooperate in
thicknesses of forms, such as the form I 0, may be
a novel manner with the lock bars that are in
used, it is preferable that the cooperating forms
serted through the projected loop ends, in that
be provided with identically arranged ‘holes I I,
said loop ends can ‘be twisted, either separately
or. in pairs, to grip the lock bars tightly and at 30 so as to he completely interchangeable, whether
turned end-for-end or reversed with respect to
the same time pull the abutting edges of adjacent
their broad faces.
_ forms more tightly together. This results from
A tie and spacer device, indicated generally by
the construction of my tie and spacer devices, and»
the reference ‘numeral I4, is formed, in accord
particularly the provision of a transverse wire
portion joining the end loops in each pair.
It is therefore an important object of this in
vention to provide tie and spacer devices of novel
and improved construction, such that the setting
up of concrete forms and the like is greatly fa
, ance with my present invention, out of a wire
of suitable gauge having the desired degree of
strength and resiliency. The wire used in form—
ing the tie and spacer devices I4 may, for in
stance, be of'mild steel of No. 8 or No. 10 gauge.
cilitated. It is a further important object of this 40 In the preferred form of the device illustrated in
Figures 1 to 4, inclusive, the tie and spacer de
invention to provide a tie and spacer device
vice I4 is formed from a single strand of wire
formed of wire with pairs of looped ends adapted
with an intermediate length l5 and two pairs of
to be inserted through pre-formed openings or
end loops I6, IBa and 17, Ha at opposite ends of
holes in the concrete forms, adjacent the edges of
said intermediate length l5. Each of the end
such forms that are to abut each other, which
loops l6 and I1, and Ilia and Ila is substantially
looped ends cooperate with the lock bars when
identical with respect to form and dimension.
twisted to engage such lock bars tightly not
As illustrated in Figure 4, the end loops l6 and
only to hold the forms in aligned vertical par
I‘! lie substantially in the same plane and the
allelism but also to bring the abutting edges of
adjacent forms into tighter contact with each 50 end loops [6a and Ila are also in substantially
the same plane, the two planes being substantial
ly parallel to each other. Consequently, the
Other and further important objects of this
loops I6 and lBa are aligned and the loops I1 and
invention will be apparent from the disclosures
Na are aligned so that a lock bar, indicated gen
in the speci?cation and the accompanying draw
55 erally by the reference numeral l8 may be in
ing.
other.
'
,
2,413,415
3
4
sorted through each of the pairs of loops l6 and
[6a, and I1 and Ila.
More speci?cally, in the construction of the
preferred form of tie and spacer device l4, one
end, I9, of the wire lies parallel to and in con
of the modi?ed form of the device 30 is in general
entirely similar to that already described for the
device I4.
After the forms Ill and Illa have been set up
and the looped ends twisted against the lock bars
tact with a transverse portion 20 that extends be
£8 to hold said forms in spaced, vertical relation
ship, concrete is poured in between the forms, as
tween the two loops l6 and Mia. Said end l9
is customary, and allowed to set before the forms
may, if desired be secured to the transverse por~
are removed. In removing the forms, the por
tion 20 by soldering or brazing. The other end 2|
of said wire similarly lies against and may be 10 tion 35 of the looped ends projecting beyond the
lock-bars l8 may be snipped oil to permit re
secured to the other transverse portion 22 join
ing the loops 5'! and Na. Each of the loops it,
led, I’! and Ila is provided with a rounded end
portion 23, 23a, 24 and Ma to facilitate the in
sertion of these end loops through the openings
5 I. The width, indicated by the letter w, of the
end loops is somewhat greater than the diameter
moval of the lock bars, or, alternatively, the pro
jecting looped end portions 35 may be untwisted
to permit removal of the lock bars, after which
the wire ends are snipped off close to the holes
H. This permits the forms l0 and l?a to be
torn down. The intermediate tie and spacer por
tions 15 are, of course, left in the concrete.
of a hole I I, so that, as shown in Figure 3, when
It will thus be appreciated that I have provided
an end loop 16 is inserted through a hole I I, the
sides of the end loop must be collapsed somewhat 20 a relatively simple and inexpensive form of tie
and spacer device, the use of which greatly facil
in the act of insertion. After insertion, as indi
cated in dotted lines in Figure 3, the convergent
itates the erection of concrete forms, or the like,
and insures proper spacing and alignment of
inner end portions 25 of said loop [6 frictionally
such forms with a. minimum of effort on the part
engage the periphery 26 of the hole ll. Thus,
even before the insertion of a lock bar IS, the 25 of the laborer. By reason of the fact that abut
ting edges, such as the edges [2 and 13 of adja
vertical forms l0 and [0a, after the tie and spacer
cent form boards can be drawn tightly together,
devices ill have been inserted, are held against
falling outwardly away from each other. Fur
a relatively smooth surface on the set concrete
is possible with an almost complete elimination
thermore, the transverse portions 2!! and 22, in
conjunction with the intermediate length l5, hold
of the ridges so often formed at the abutting
edges of the usual concrete forms.
the forms Ill and Illa against movement toward
Thetie and spacer devices of my invention
each other. The result is that as soon as the
function to keep the forms from spreading apart
requisite number of tie and spacer devices l4
under any outward acting pressure. The trans
have been inserted, the forms ill and Illa are
practically self-supporting in a vertical position,
verse portions of the devices, in conjunction with
owing to these tying and spacing features of my
the intermediate portions, keep the forms from
collapsing inwardly and also serve as a gauge
devices.
After the tie and spacer devices l4 have been
for the thickness of the wall of concrete to be
positioned in place, a lock bar I8 is inserted
poured. The end loops cooperate with the look
through a number of the horizontally aligned
ing bars, or slide bars, to brace the forms out
looped ends It, l6a, etc. The lock bars l8 may
wardly. By making the widths of the end loops
be formed of metal, or other suitable material
g1 eater than the holes in the forms, the end loops
and are of such length as to take care of three
are frictionally held in the holes after insertion
or more of the forms IE), or l?a, making ‘up one
to temporarily support the forms vertically until
wall or the other of the completed form. The
the lock bars can be inserted and held in place
width of each lock bar it! is considerably less 45 ' by twisting the end loops thereagainst.
than the length of a looped end, so that after
The forms or panels may be locked edge to edge,
insertion of a lock bar, the looped ends may be
as illustrated, or an edge to a side face, as in mak
twisted upon themselves, as illustrated in Figures
ing corners. Instead of forming the forms or
1 and 2, to tighten them against the outer edge
panels with their long edges vertical, they may. be
of the lock bar, as at 21. It should be noted that 50 joined with their long edges horizontal, and the
in twisting one of the end loops It to tighten the
lock bars can extend vertically.
same against the lock bar 18, tension is placed
It will, of course, be understood that various
upon the intermediate portion 20 to cause the
details of construction may be varied through a
same to hug tightly against the inner wall sur
wide range without departing from the principles
face, as indicated at S and against the inner pe
of this invention and it is, therefore, not the pur
riphery P of the holes H. The same tensioning
pose to limit the patent granted hereon otherwise
eiTect is produced when the looped ends I? and
than necessitated by the scope of the appended
[1a are twisted against the outer edge of the
claims.
lock bar 38. Instead of twisting the looped ends
separately, they may be twisted together. Twist
ing may be done by the use of a pair of pliers or
by merely inserting a strip similar to the lock
bar [8 but narrower through the looped ends and
twisting said ends to tighten them against the
lock bar.
A modi?ed form of my invention is illustrated
in Figure 5, which is similar to the tie and spacer
60
I claim as my invention:
1. The combination with concrete forms hav
ing spaced openings adjacent the edges thereof
that are to abut, of tie» and spacer devices having
looped ends inserted through adjacent openings,
said devices having transverse portions to con
tact the inner surfaces of said forms, locking bars
inserted through said looped ends to span and
support adjacent forms, and the projecting por
device M, except that the modi?ed device, indi
tions of said looped ends being twisted tightly
cated generally by the reference numeral 39 has
two intermediate strand lengths 3| and Ski run 70 against said locking bars to hold said forms
against said transverse portions to space the forms
ning between the pairs of looped ends 32, 32a and
apart.
33, 33a. The two ends of the wire forming the
2. The combination with concrete forms having
device 30 may be brought together along one
regularly spaced openings adjacent the edges
intermediate length, such as the length Blue, and
brazed or soldered together, as at 34. The use 75 thereof that are to abut, of tie and spacer devices
2,413,415
each formed with an intermediate spacing por
tion, looped ends inserted through adjacent
openings and a transverse portion joining each
of said looped ends to lie against the inner sur
faces of adjacent forms, and a member inserted
in which said walls have aligned holes adjacent
their edges that are to abut, said member com
prising a single wire strand having an untwisted
intermediate portion and transverse portions at
the ends of the intermediate portion, and having a
pair of loops at each end of said member with the
loops at an end projecting in parallel relation
the outer surfaces of adjacent forms, the portions
from the ends of the transverse portion at that
of said looped ends beyond said member being
end of the intermediate portion, said end loops
twisted upon themselves against said member to
hold the same in place after insertion and to hold 10 having widths greater than the diameters of the
holes but capable of contraction when inserted in
said transverse portions against the inner surfaces
said holes to frictionally engage the outer pe
of said forms to space said forms apart.
ripheries of said holes after insertion to hold said
3. In combination, a plurality of concrete forms
forms against said transverse portions in set up
of identical dimensions and having similarly ar
ranged holes adjacent edges thereof that are to 15 spaced relation.
5. The combination with concrete forms hav
abut each other when set up, unitary tie and
ing spaced openings adjacent the edges that are
spacer devices formed of wire with intermediate
through the projecting looped ends to lie against
to abut, of a one piece tie and spacer device com
spacing portions andelosed end loops joined by
prising a member formed wholly of wire and hav4
transverse portions, said tie loops having widths
greater than the diameters of said holes but being 20 ing an intermediate spacing length of untwisted
Wire with pairs of loops at each end of the said
capable of contracting when inserted through
untwisted spacing length, the loops at each end
being joined by transverse lengths of wire, said
ripheries of said holes after, insertion to hold said
transverse lengths of wire engaging the inner
forms against said transverse portions in set-up
and spaced relation, and members for insertion 25 surfaces of said forms to space them apart when
the device is thereto applied with the end loops
through the projecting portions of said tie loops to
extending through adjacent openings in the
brace the outside walls of said forms, the project
forms, and said end loops having widths greater
ing extremities of said'tie .s loops being twisted
than the diameters of the openings but capable of
tightly against said members to tension said
transverse portions against the inside surfaces of 30 contraction when inserted in said openings to
frictionally engage the outer peripheries of said
said forms to draw abutting edges of said forms
openings after insertion to hold said forms against
together, said forms being: spaced apart solely
said transverse lengths of wire in said spaced
by the engagement of the transverse portions of
said holes to frictionally engage the outside pe
said devices with the inner surfaces of said forms.
4. A form tie comprising a member adapted to 35
hold opposing walls of a form in spaced relation
relation.
I
AUGUST OLSON.
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