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Патент USA US2115137

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April 26, 1938.
G. B. ‘Bosco
Filed NOV. 5, 1957
Patented Apr. 26, 1938
p y »2,115,137
_ 'ì
" Y,
K ~ " `('Jlïeorge Bf Bosco, Chicago, Ill.
Applicationnovember 5,1937, sentirne. 172,869
- 4 claims." (cm2-_103)
This invention relates to the- general art of
masonry and
concrete structures, and more
specifically to bonding and tying devices for such
In a well known form of such devices metal
The anchor channels are ' made in sections
anchor channels, usually of dovetail form in
cross-section, are embedded in the surface por
Which are successively nailed to the form wall in
tion of a concrete column, and in thesey chan
nels are inserted at intervals the correspondingly
endwise abutting relation; and considerable skill
shaped heads of key strips, the body portions
and care are required to attach the successive
sections in accurate alinement with the meeting
ends of the side and transverse walls of a previ 10
of which project from the side of the column’and
ously applied section in perfect register with each
have transverse corrugations or teeth that are
embedded in the mortar of a masonry facing
other. A still further object ofy this invention is
to provide a means for facilitating such aline
ment of meeting sections, such means in its pre
that is built up entirely or partly around the
column to conceal the latter. These anchor
channels are fastened to the inner surface of the
wall of the wooden form of the concrete column,
usually by nails driven through the transverse
limb of the channel into the Wall of the form.
As the concrete is poured into- the form it is
2 O usually stirred by mechanicalV agitators to pre
vent voids in the concrete body, and this often
has the effect of loosening the nails and causing
cracks or gaps between the edges of the channel
and the inner surface of the form. The lateral
2 01 thrust of the wet concrete also causes the wall
of the form to bulge outwardly more >or less,
vention is to provide an .improved attaching
means for the anchor channel by which such
lateral bending or displacement of the side walls
of the channel cannot occur.
ferred form consisting of a compressible elastic
strip, such as a strip of felt, that can'be pressed
into each section through its open side and when
so entered expands laterally and ñlls a longitu
dinal portion of the section and projects be- .
yond one end of the section.
When one such ’
loaded section has been nailed in place on the
form, the next abutting section, similarly loaded,
is applied, its empty portion being forced over
the exposed projecting portion of the preceding
strip, so that the latter spans the joint VVbetween
themeeting ends of the two sections and thus
serves as a sort of mandrel to center the two sec
unless- it is very strongly supported against such
bulging, and this bulging also >creates cracks or
tions in alinement with each other.
gaps between the edges of theV channel and the
inner surface of the form. 'I'hrough these cracks
dug out and re-used or discarded. Y
Illustrative embodiments of the invention are
or gaps, whether resulting from either or both
shown in the accompanying drawing, in Which:
Fig. -l is a fragmentary elevation viewed from
the inner side of a form, showing two vertically
of the above named causes, the wet concrete
works into the channel, more or less filling and
clogging the latter, so that the mason has dif
ficulty in entering and properly positioning the
heads of the key strips, and frequently finds it
necessary to dig the concrete out before he can
properly enter and place the heads of the key
strips; and this involves extra labor and loss of
One object of this invention is tol provide an
improved means for attaching the anchor chan
nels to the wall of the form by which the above
45 mentioned cracks or gaps cannot occur from
either of the above mentioned, or any other,
causes, so that no time and labor are lost in clean
ing mortar out of the anchor channel.
Again, the pressure of the wet mortar against
50 the sidewalls of the channel often bends the
side walls inwardly on their joints with the trans- >
verse wall to such an extent that, because of the
resultant narrowing of the channel, it is diflicult
or impossible to properly position the heads of
55 the key strips therein. Another object of the in
After the
form yhas been taken down, Ythe felt Ístrips are
alined anchor channels secured thereto by my -`
improved'attaching means, and also showing a
portion of the temporary felt alining strip.
Fig. 2 is a horizontal section, takenon the line
2--2 of Fig. l.
Fig. 3 is a horizontal section through a portion "
'of the concrete column, showing the wall of the
form removed, the anchor channel embedded
therein, and the projecting portions of the nails>
cut 01T.
Fig. 4 is a fragmentary horizontal section 45
showing a hollow tile facing anchored to a ver
tical anchor channel in a concrete wall by my
improved wall tie.
Fig. 5 is a vertical section, taken on the line
5-5 of Fig. 4.
Fig. 6 is a view similar to Fig. 4, but showing
the hollow tile anchored toa horizontal anchor
channel in a concrete wall.
Fig. '7 is a vertical section taken on the line
1----1>of Fig. 6.
9, a key strip such as I9 is employed. kThe key
Fig.` 8 is a perspective view of the key strip
. appearing in Figs. 4 and 5.
strip I9 differs from the key strip I8 only in hav
ing-its shank warped through an angle of Y90`
Y Fig. 9 is a perspective View of the key’strip ap
pearing in Figs. 6 and ’7.
degrees to form a vertical head I9’ for engage
ment with the horizontal channel II’. The 5
other end of each key stripV is split and the por
Referring first to the form and application of
the invention shown in Figs. 1 to 5 inclusive, I0
designates a wooden form wall, to the inner sur
' face îof which is applied a vertically disposed an
rchor channel >II of the dovetail form in cross
tions on eachside of the splitl are turned in op- . `
posite directions to form teethV 2D that, as sho-wn
in Figs. 5 and 7, are emedded in cement 2i be
section clearly indicated in Figs. 2 ancdfß.Y The - tween _and connecting adjacent tiles 22 of a hol
low ktile facingy that is applied to V`the 'concreteV
anchor- channel I I i is1_cbmmonly "madeY in'` pre
determined lengths that are applied in end‘wfise column or Vwall; the key strips usually spacing the "
abutting relation _to the height or length required î facing approximately one-'inch from the column ï
or wall. kThe structural forms of thekey strips
by any particular job, the line I2 in Fig'. 1
' dicating the joint between the meeting ends-'0f
are old , and
is. .claimed
known, and
two adjacent sections.
Y The side limbs of the channel' have-lon* their' "ï
shown-5 in Fig. 1, thev nailsA I4 on the two
free longitudinal edges, outwardly directedrflanges ‘Si sides ofthe channelare preferably located in `al
ternating orrstaggered relation.
Before the concrete is poured intoïthe‘form,the anchor channel is. secured tothe wall» I0
` 7
Although but one specific embodiment of this
_by4 nailsV I4. rThese _nails Yare preferably applied
as shown in Fig. 2, being locatedon the-outer
invention has ‘beenfherein shown and described,
it willl be. understood that details of the construc
tion shown¿ma'y be altered or omitted without
sides of vboth side walls of lthe, channel and prefier
«ably in `Contact:with said walls, and driven
fined bythe-.following claims.
departing froml the spirit of the invention as de
through- the flanges I3 into, the form wall ID ob- »
liquely tothe plane ofv the' latter. ,The'fnails
, Y 1. In a wall tie of theclass described, the com-f
are formed withheads I_5 that overlap thev transe lbination with an anchor channel of -dovetail form
verse limb Aof thechannel, 4and 'preferably vthe in> vcross-section,- of `means for attaching said
heads are-each vformed with a' tooth l I6 that. as channel to a form Awall consisting of'nails Ydriven 30
the nail is driven home, bites> into thetransverse intol _said wall robliquelycto the plane ofthe lat
,limb and thus locks Ythe nailagainst spreading ter'and lying >crcsswise of and- substantially par
outwardly of thechanneh.
¿ y
Y. ,A
1 __ ¿
- f allel _with both> side walls of the channel and hav
This attaching means is very `effective; to pre
vent the presence of any crack origap between
ing heads overlapping and contacting Awiththe _
transverse llimbV of _ the channel.
the flanges I3 and thefvfo'rm-wall I0 yduefeither"` , 2;'y In a wall .tieof the class described, the comf
to theçvconcrete .puddling operation- or swelling binationwitlraln" anchor channel, of means for
and consequent bending’of; the» form wall,V `and
the described manner of applying the nails leaves
'attaching'said' channel to a vform wall consisting
tionsof the anchor channel, I preferably employ
filler v`strips I1. of felt` or similarê compressible
elasticV material that can be inserted through
lthe open side íof vthe channel and’ will lthen ek
lclïann'el,v an'd'jsaid headseach having a îtoothY y
ofv nails driven intofsaid `wall iobliquely tothe '
Ytheinterior of the channel free and unobstructed . plane fof the latter, said nails lying Yon the outer 40 ï
f _for theready application lof the key pieces. ¿_ '
_sides of both side walls of the channel'fand hav
l. To facilitate the accurate VValining of thesec- „ ing heads overlapping thegtransverse limb of the
adapted to bite into said'transverse limb.
3. In a wall tie of lthe- class described, the com
bination with an anchor ‘ having out-Q1
pand and¿virt¿ually„fill the Ylatter.„¿-Eaçh> section wardlydirected ñangesfongthe free longitudinal j
of the filler strip I'I ,is entered yinto, its channel' »edges orfhitsjsideÍwalls„,of means for-attaching»
section before the latter is nailed >„to> the Wall, _saidchannel t6 'a form"wall consisting of nails
and a portion of it projects beyond the end of ' driven through'` j saidflangesfand V'into-1 said wall
.the 'Vchannelsection as indicated in Fig.y 1,¿_so> _('JbliqllelytoY the plane of. the latter, said nails ' that the empty portion o_f the next adjacent chan lying ,onfthe outerfsides of bothV side walls of the
nelY section may be .forced over> the projecting
' portioniof the-strip, as shown in Fig. __1, thelatter
channel and havingjheads overlapping and con->
tacting withthe transverse limb» of the channel. e '
as a *temporaryl mandrel to> aline ffl' ,21. In a wallftieloffthe class described, the com
55 thusi‘serving
bination` with >endwise .' abutting»y anchor channel
the two sections at their meeting ends..„
Incidentally, 'thellller strip; I'I ,further serves sectionsßof means foralining the meeting endsV
tof prevent the entranceof concrete to the chan of said sections when attaching them to a form
nel duringthe concrete pouring operation in the .wall consisting' of Va transversely compressible
strip ofY resilient material filling and projecting
event that any small cracks` or gaps should de
velop due to irregularities in the surface of ,the
form wall, or other -causes. ,Y >After the V’concrete
f beyond the meeting end` portion of one of said ' '
sectionsand adapted, whenl said one section is
has. set` around »the anchor channel,l the filling Íattachedïrtofïth‘e wall„to enter and ñll the meet
I'I is Withdrawn to make room vfor the key strips.
_Y In constructions where the fanohor channel ris
vertical, a key strip I8 of the form shown in Figs.
sertible‘and removable laterally‘through the ,open : Y
4, 5. and 8 is employed; and where.v the anchor
sides Vof'said sections. '
` channelY is horizontal, as shown inFigs. 6,',7 ,and
end of the",otherse'ctionV when said-other sec
tion isÁ attached ltothe wall, saidstrip
being in
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