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Патент USA US2121757

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June v21,_1938.
w. AfHEINRlcl-l ET AL
_ 2,121,757
EARTH ANCHOR
Filed Oct. 26, 1936
‘ 5 Sheets-Sheet l
ArroE/vfv
June 2l, 1938.
l
w` A. HEINRICH r-:T AL
2,121,757
EARTH ANCHOR
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Filed 001'.. 26, 1936
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June 21, 1938.
w. A. HEINRICH ET A1.
2,121,757
EARTH ANCHOR
Filed Oct. 26, 1936
3 Sheets-Sheet 5
Patented June 21, 1938
2,121,757
UNITED STATES PATENT OFFICE
2,121,757
EARTH ANCHOR
Walter A. Heinrich, St. Louis, Mo., and Chester
R.. Pieper, La Crosse, Wis., assignors tol Iron
Products Corporation, La Crosse, Wis., a cor
poration of Wisconsin
Application october 26, 1936, serial No. 107,738
8 Claims. (Cl. 18S-_92)
This invention relates generally to earth an
chors, and more specifically to earth anchors of
the type which include each a plurality of pivoted
blades adapted for projection into- undisturbed
5 earth adjacent to a hole formed in the earth
which receives the anchor in a folded or collapsed
condition, the predominant object of the inven
tion being to provide an improved earth anchor
of this type which is provided with blades of
such unique shape and arrangement that said
blades when in their folded or collapsed condition
occupy a minimum of Aspace transversely of the
anchor, so that the anchor may be introduced
into a relatively small hole formed in the earth,
15 and when expanded provide a maximum of
earth-contacting blade surface for securely fix
ing the anchor in place in the earth.
Another object of the invention is to provide
anearth anchor which is provided with a tamp
'20 ing block or head of improved construction and
arrangement and with which the blades of the
anchor are pivotally associated in an improved
manner.
`
f Still another object of the inventionis to pro
d vide an improved earth anchor of the type to
which this invention relates. which includes im
proved means for retaining the nut that attaches
the base washer of the anchor to the rod thereof
in place on said rod.
Fig. 1 is a sectional view taken» through the
ground showing one of the improved anchors as
it appears when in use, the anchor being shown
in' elevation.
Fig. 2 is an enlarged plan View ofthe improved
anchor with its blades expanded, the rod of the
anchor being shown in section.
u
4
_
Fig. 3 is an inverted plan view of the anchor
illustrated' in Fig. 2.
‘
Fig. 4 is a View of the improved anchor shown
40
partly invertical section and partly in elevation,
a _portion of the rod of the anchor being broken
away.
v
.
l
` Fig. 5 is a side elevation of the improvedan
ohor in a folded or collapsed condition, here _also
' a part of the anchor rod being broken away.V
Fig. 6 is a horizontal section of the anchor
taken on line 6_6 yof Fig. 5.
Fig. 7 is a fragmentary, horizontal section
taken on line 'i-'l of Fig. 4, but >with the blades
and the base washer shown in plan.
`
Fig. 8 is a vertical section of the tamping block
of the improved anchor.
In the drawings, wherein is shown for the pur
pose of illustration, merely, one embodiment of
the invention, A designates the improved anchor
generally. The anchor A includes a tamping
block I which is comprised of a pair of elements
2 and 3, the element 2 including a sleeve portion
2' which at its upper end is extended into a
tapered opening 3' formed in the element 3, and
is expanded within said opening as shown in
Fig. 4, so as to secure said elements together.
The element 2 includes also a plurality of Ver
tically extended depressions 4, which are formed
in the side faces of the element, there being four
of these side faces in the particular embodiment
of the invention illustrated in the drawings, and
a depression 4 is formed in each face as shown
in Fig. 7. Extended outwardly from each of the
four side faces of the element 2 at opposite sides 15
of the depression 4 formed therein is a pair of
trun'nic-n supports 5, which are shown to good .
advantage in Fig. 8.
i
The element 3 includes a top wall 6 which is
provided with a plurality of thickened portions l'20
6’ adapted to receive tamping blows >when the
anchor is being expanded in a manner to be here
inafter set forth. Also, the element 3 includes
a downwardly extended, rectangular, ymarginal
skirt portion 'l which is provided with openings 8 25
that are alined with the depressions 4 and are of
substantially the same width as said depressions..
The lower faces of the portions of the top Wall B
of the element 3 which are located between the
thickened portions 6’ of said top wall contact '30
closely with the upper face portions 2a of the ele
ment 2, as shown in Fig. 8, being held in such
close contact by the expanded connection between
the sleeve lportion 2’ of the element 2 and the
element 3, while the openings 8 extend upwardly 35
into the thickened portions 6’ of said top wall so
that the top walls of said openings vare in a
slightly higher‘plane than said upper face por
tions 2e. At opposite sides of the openings 8
formed in the skirt portions of the element 3 said ifo
element 3 is‘provided with faces 9 which are
complementary to and co-operate with faces l0
formed on the element 2 to provide trunnion
bearings which receive and support trunnions
which, as will presently appear, are formed on 45
the blades of the anchor. The pairs of co-op’er
ating faces 9 and I0 are provided with curved
portions which provide for the reception of trun
nions of circular cross-sectional shape, whereby
said trunnions may be rotatably supported by 50
said faces.
i
The embodiment of the invention illustrated in
the drawings includesfour blades Il which are
longitudinally curved, as shown in Figs. 4 and 5,
so as to facilitate projection of said blades into 55
2
V2,131,757'
other parts of the anchor.
the ground, and at the upper end of each of said
blades a neck portion II' of reduced width is
Thus, because of the
contact between the lower end of the rod and
provided from which is extended outwardly in
opposite directions a pair of trunnions I2. The
the bridge portion of the U-shaped structure R,
the rod may not be moved downwardly relative
neck portion I I’ of each blade I I is extended into
the cavity provided in theV tamping block struc
ture by an associated depression ll and opening
ß, and the trunnions of such> blade are received
to the base anchor to cause the nut to be freed
from the walls of the depression 2I, and said
walls of the depression prevent rotation of the
nut on the screw-threaded portion of the rod.
In the use of the improved anchor a hole H is
dug in the ground, as shown in Fig. 1, and the
anchor A is introduced into said hole with the
blades thereof in their folded or collapsed posi
tions. If desired, the blades may be wired in their
folded positions to the base washer by means of
light pieces of Wire (not shown). With the base
washer located at the bottom of the hole I-I the
thickened portions 6' of the tamping block I are
subjected to tamping blows, the first few of which
will break the wires and free the blades when
and supported for rotary movement by the pairs
10 of faces 9 and IU located at opposite sides of said
depression and opening. Because of this arrange
ment the blades l I are mounted for pivotal move,
ment outwardly from the retracted positions in
which said blades are shown in Fig. 5 to the
16 expanded/ positions in which said blades are>
shown in Fig. 4, the narrower neck portions II'
of the blades moving into the openings 8 when
the blades are moved to their expanded positions.
As shown in various of the views of the drawings,
said blades are wired to the base washer, as men
20 the blades are suitably ribbed so as to provide
them with the necessary strength to withstand
the rather rough usage -to which they are sub
jected. Also each blade is provided on its under
tioned above.
spect to the rod I'I, and because the blades are
pivotally attached to the tamping block and are
slidably supported by the base Washer, such down- "
ward movement of the tamping block causes the
free ends of the blades to move outwardly and
pass into the undisturbed earth adjacent to the
hole H, the longitudinal curvature of the blades
assisting projection of the blades into the ground.
When the blades have been expanded suf
ficiently the lugs I3 formed on the blades will
pass beyond the marginal face of the base washer
and the faces I 3' of said lugs will contact with
said marginal face of the base Washer, as shown
in Fig. 4, so as to prevent the blades from being
withdrawn laterally from the undisturbed earth
adjacent to the hole H when upward strains are
applied to the rod I'I. Also, when the blades .are
expanded as shown in Fig. 4, the lugs I6 on the
blades contact with the inclined face I5 of the
base washer, as already explained herein.
An important feature of the nut-retaining
means R is that the anchor may be churned up
and down in the hole H, if this be necessary to 45
force the assembled anchor to the extreme bot
tom of the hole, without such relative movement
or inner surface with a lug I3 which serves a
25 purpose to be hereinafter set forth.
The improved earth anchor A includes a base
Washer I4 shaped as shown to the best advantage
in Figs. 3 and 4; that is to say, said base Washer
includes an annular marginal rim Illa, a centrally
30 located portion IL‘lb having an opening Illc formed
vertically therethrough, and radially extended
arms Idd which connect said marginal rim and
said centrally located portion I 4b to provide an
integral washer structure. As shown in the two
views mentioned above, the radially extended
arms Idd are suitably ribbed to impart to the
washer structure the required strength. It is to
be noted that the marginal rim of the base washer
is provided with an inclined face I5, and that the
40 blades are provided with lugs I6 which are
adapted to contact with said inclined face when
the blades are expanded (Fig. 4) .
Extended through the sleeve portion 2’ of the
element 2 of the tamping block I and through
45 the opening |40 formed through the centrally lo
cated portion IlIb of the base washer I4- is a rod
I1 which is provided at its outer end with an eye
I8 adapted to receive a guy or like element I9
to'whích the anchor is attached. The rod I'I at
50 its end opposite to the end thereof at which the
eye I8 is located is screw-threaded as shown in
Figs. 4 and 5, and a nut 2‘0 is mounted on this
screw-threaded portion of the rod, said nut be
ing normally seated in a depression ZI formed in
55 the lower face of the centrally located portion
Illb of the base washer I 4. The depression 2| is
of the shape illustrated in Fig. 3; that is to say,
said depression includes a rectangular central
portion Zia from which lateral extensions ZIb are
60 projected in opposite directions. The centrally
located portion Idb of the base washer is provided
also with means for retaining the nut 26 in its
seated position in the depression 2 l. This means
comprises a substantially U-shaped structure R
65 which is integrally connected at the upper ends
of its parallel side members to said centrally lo
Continuation of the tamping blows
moves the tamping block I downwardly with re
between the rod and the base washer as would
free the nut 2|] from the depression 2|; this be
ing so because the nut is seated in the depres~
sion 2l and the end of the rod I 1 contacts with
the bridge portion of the U-shaped structure R.
In assembling the base washer and the rod, the
nut 20 is introduced into the depression 2I after
which the screw-threaded end portion of the rod .
f
is screwed through the nut and into contact with
the bridge portion of the U-shaped structure R.
After the anchor has been secured in the ground
by expanding the blades as described, the hole
I-I is, of course, filled in with earth.
An extremely important feature of the inven
tion is the particular shape of the blades II as il
lustrated to the best advantage in Figs. 2, 3, and
5. It will be noted from these Views that each
blade is provided with a concave edge portion IIa ‘
which receives in overlapping relation a corre
spondingly curved portion of an adjacent blade
cated portion Idb, as shown in Fig. 4, the bridge
portion of said U-shaped structure being of en
larged, substantially circular formation at its
when the blades are in their folded or collapsed
70 approximate center. The end of the screw
threaded portion of the rod I'l contacts with the
includes a portion IIb which extends laterally a
considerable distance, and this portion, which is
curved longitudinally, is reœived by the concave
enlarged circular portion of the bridge portion of
the U-shaped structure, and the nut 29' is seated
in the depression 2l when the rod Il is in its
75 proper assembled relation with respect to the
positions.
Also, each blade at its opposite side
edge portion I IEL of another adjacent blade. 'I'he
nested relation of the blades when they are
4folded or collapsed is shown to good advantage in 75
3
2,121,757
Fig. 6, which shows that each blade overlaps an
adjacent blade and itself is overlapped by still
another adjacent blade. By employing blades of
the shape illustrated and described, said blades
when folded or collapsed occupy a minimum of
space transversely of the anchor so that the
anchor may be introduced into a relatively small
hole formed in the ground, and also when ex
panded provide a maximum of earth-contacting
10 bladesurface for securely fixing the anchor in
place in the ground.
We claim:
1. An earth anchor including a plurality of
pivotally supported blades adapted for projec
15 tion into undisturbed earth adjacent to a hole
in the earth which receives the anchor in a blade»
folded condition, said blades having edges which
extend continuously and in an unbroken manner
throughout their lengths, each of said blades
20 being disposed in angular overlapping relation
with respect to an edge of one blade only of the
associated blades when the blades are in their
folded condition, and being itself angularly over
lapped by still another single blade of the asso
25 ciated blades.
2. An earth anchor including a plurality of
pivotally supported blades adapted for projec
tion into undisturbed earth adjacent to a hole
in the earth which receives the anchor in a blade
30 folded condition, said blades having edges which
extend continuously and in an unbroken manner
throughout their lengths, each of said blades
being disposed in angular overlapping relation
with respect to an edge of one blade only of the
35 associated blades when the blades are in their
folded condition, and being itself angularly over
lapped by still another single blade of the asso
ciated blades, which contacts with an edge of
the ñrst-mentioned blade.
3. An earth anchor including a plurality of
40
pivotally supported blades adapted for projec
tion into undisturbed earth adjacent to a hole
inthe earth which receives the anchor in a
blades which receive other vblades in contact
therewith being of concave formation.
5. An earth anchor including a plurality of piv
otally supported blades adapted for projection
into undisturbed earth adjacent to a hole in the
earth which receives the anchor in a blade-folded
condition, said blades having edges which extend
continuously
and
in
an
unbroken
manner
throughout their lengths, each of said blades
being disposed in angular overlapping relation 10
with respect to an edge of one blade only of the
associated blades when the blades are in their
folded condition, and being itself angularly over
lapped by still another single blade of the asso
ciated blades which contacts with an edge of the
first-mentioned blade, each of the blades being
curved longitudinally, and the edges of said
blades which vreceive other blades in contact
therewith being of concave formation, said blades
being moved out of their overlapped relation
when they are expanded.
'
6.'An earth anchor including a rod, a tamp
ing block slidably supported by said rod, _a plu
rality of blades pivotally supported by said tarnp~
ing block, said tamping block comprising a pair ‘
of elementsone of which includes a sleeve por»
tion through which said rod extends, a portion
of said sleeve portion of said one element being
expanded in an opening formed in the other
element so as to secure said elements together,
trunnions formed on said blades, and comple
mentary faces formed on said pairs of elements
of which the tamping block is comprised which
provide bearings for said trunnions.
7. .An earth anchor including a rod, a tamping
block slidably supported by said rod, a plurality
of blades pivotally supported by said tamping
block, said tamping block comprising a pair of
elements one of which includes a sleeve portion
through which said rod extends, a portion of 40
said sleeve portion of said one element being
expanded in an opening formed in the other ele
blade-folded condition, said blades having edges
ment so as to secure said elements together,
trunnions formed on said blades and extended
45 which extend continuously and in an unbroken
manner throughout their lengths, each of said
outwardly therefrom, alined depressions and
openings formed respectively in said pair of ele
blades being disposed in angular overlapping
ments, and complementary faces formed on said
relation with respect to an edge of one blade
only of the associated blades when the blades
50 are in their folded condition, and being itself
pair of elements at opposite sides of said alined
depressions and openings which provide bearings
angularly overlapped by still another single blade
of the associated blades which contacts with an
edge of the first-mentioned, blade, each of the
blades being curved longitudinally, and the edges
55 of said blades which receive other blades in con
tact therewith being .of corresponding curva
ture.
4. An earth anchor including a plurality of
pivotally supported blades adapted for projec
60 tion into undisturbed earth adjacent to a hole
in the earth which receives the anchor in a
blade-folded condition, said blades having edges
which extend continuously and in an unbroken
manner throughout their lengths, each of said
65 blades being disposed in angular overlapping re
lation with respect to an edge of one blade only
of the associated blades when the blades are
in their folded condition, and being itself angu
larly overlapped by still another single blade of
70 the associated blades which contacts with an edge
of the first-mentioned blade, each of the blades
being curved longitudinally, and the edges of said
for said trunnions.
8. An earth anchor including a rod, a tamp
ing block slidably supported by said rod, `a plu
rality of blades pivotally supported by said tamp
ing block, said tamping block comprising a pair
of elements one of which includes a sleeve por
tion through which said rod extends, a portion
of said sleeve portion of said one element being
expanded in an opening formed in the other
element so as to secure said elements together,
trunnions formed on said blades and extended
outwardly therefrom, alined depressions and
openings formed respectively in said pair of ele
ments, and complementary faces formed on said
pair of elements at opposite sides of said alined
depressions and openings which provide bearings 65
for said trunnions, the element which includes
the sleeve portion having portions which under- ,
lie the trunnions and the associated element
having portions which overlie said trunnions.
WALTER A. HEINRICH.
CHESTER R. PIEPER.
70
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