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Патент USA US2405443

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Aug. 5, I346.
F, s, MEES
Filed Jan. 25, 1945
Patented Aug. 6, 1946
Frank S. Mees, Swampscott, Mass.
Application January 25, 1945, Serial No. 574,449
5 Claims. (Cl. 36-30)
This invention consists in a new and improved
and the thick ?exible forepart portion of the unit.
platform sole, or rather a combined. platform and
These and other features of the invention‘ will
insole since it ful?lls the function of both of these
be best understood and appreciated from the fol
soles in the manufacture of shoes of the plat
lowing description of a preferred embodiment
form type.
thereof selected’ for purposes of illustration and
The object of the invention is to provide a plat
shown in the accompanying drawing, in which:
form sole unit that may be constructed in the
Fig. l is a View in perspective showing the fore
stock ?tting room and brought to the making
part of the unit in a preliminary stage of its
room complete andv ready to be incorporated in
Fig. 2 is a similar view showing the forepart' of
the shoe with no loss of time. Furthermore, the 10
sole of my invention is flexible in the forepart
the unit as completed, and
where it should be flexible for the comfort of the
Fig. 3 is a view in perspective of a complete
wearer and stiff in the shank where stiffness is
unit shown in inverted position.
required for maintaining the fine lines of the
In preparing the platform sole unit herein illus
shoe. Many platform shoes have had a bulky 15 trated I ?rst select a full length block insole
cumbersome appearance heretofore. The sole
2 of thin ?brous material :such as that, for-ex~
unit herein disclosed has a composite shank of
ample, known to the industry as “Darex,” and
slim, smooth curvature although including a steel
when this material is used I prefer to employ a
shank stiffener which gives it adequate rigidity.
hard ?bre section 53 for the tip of the sole. The
By employing the platform sole unit of my in .20 composite Darex sheet may ‘be 2 to 4 irons in
thickness or the insole may be of split leather or
vention, therefore, it is possible to construct a
of any convenient. ?brous material. To one face
platform shoe having the characteristic plat
form appearance in its forepartbut still. retain
of the block insole I secure a thick resilient plat
ing the more graceful lines imparted to a shoe
form ply l5 which may be of cork and rubber
by a close ?tting shank.
25 composition, felt or other suitable ?exible ma
With these ends in. view, the insole unit of my
terial available in the market. The ply ill is bev
invention is characterized by a full length ply
eled at its rear end in a section H to a feather
of thin ?brous materialv having a thick resilient
edge which is located in the shank portion of the
unit as shown in Fig. 1.
platform ply co-extensive with its forepart and
tapering rearwardly to a feather edge located in .
The two plies it and i2 may now he died out in
the shank of the unit. Both plies are apertured
the contour desired for the shoes to be- manu
and contain a resilient plug which is exposed in
factured and this may be done conveniently by
both surfaces of the forepart of the unit, and at
means of dies available. for that purpose. At the
least the platform ply of the unit is transversely
same time or as a separate operation, a large
slashed so that it is rendered extremely ?exible
aperture, for example, a circular perforation I4,
although of substantial thickness. In general it is
maybe cut out in the center of the forepart and
desirable to slash the forepart of the innersole
this may be supplemented by a series of smaller
circumferentially arranged perforations It. It
through its face which is lowermost or outermost
in the ?nished shoe, and in some instances the
will be understood that these perforations extend
slashes will therefore be found to extend through 40 completely through both. plies of the forepart.
the ?brous ply and substantially half way into
In the same or in a subsequent operation trans
the thick resilient ply of the platform. However,
verse slashes are formed in the platform ply l0.
the location and arrangement of the slashes is of
As suggested in Fig. 3, these slashes extend from
secondary importance so long as they impart the
side to side, passing through the ?brous ply l3
desired ?exibility to the forepart of the unit.
As herein shown, the shank portion of the unit
is built up by locating a steel shank stiffener upon
the thin ?brous layer with the forward end of the
stiffener extending beneath or overlapping the
and substantially into the platform ply l0. Cer
tain of the slashes intersect the aperture l4 and
the combined effect of the aperture and slashes is
to render the forepart of the unit extremely ?ex
ible so that the platform does not feel stiff under
the foot of the wearer. If it is not desired to slash
feather edge of the platform ply and then en
closing both the thin ?brous ply and the shank
the ?brous ply l2, the platform ply Ill may be
stiffener between ?bre shank pieces. In this Way
slashed before it is assembled with the ?brous
ply l2.
I supply a stiff, well-shaped shank and heel seat
portion in the unit and make a smooth and se
The shank portion of the unit may be con
cure union between the thin stiff shank portion 55 structed by placing a curved steel shank stiffener
l8 upon the shank portion of the ?brous ply l2,
anchoring it in position by a rivet at its rear end,
and then covering the shank stiffener by a ?bre
shank piece i9 which may be secured in place by
staples 20 at its forward end and by being ce
mented in face-to-face contact with the ?brous
ply 12. Finally a second ?bre shank piece 2! is
cemented to the opposite face of the ?brous ply
l2 being extended to overlap the skived or bev
thereof, I claim as new and desire to secure by
ply l2.-
resilient platform ply co-extensive with the fore
part of the ?brous ply and tapering rearwardly
Letters Patent:
1. A platform sole unit comprising a full-length
ply of thin ?brous material, a thick platform ply
of resilient composition co-extensive with the
forepart of the ?brous ply and beveled to a
feather edge in the shank of the sole, a curved
steel shank stiffener located adjacent to the
?brous ply and extending forwardly beneath the
eled section “of the platform ply [0. The shank 10 feather edge of the platform ply, and stiff ?bre
piece [9 similarly extends forwardly to a posi
shank pieces enclosing the shank and heel-seat
tion underlying the section H of the platform
portions of the ?brous ply and the said steel
ply and ‘the staples 20 constitute positive con
shank sti?ener.
nection supplementing the cemented‘ union
2. A platform sole unit comprising a thin
formed between the shank and forepart of the 15 ?brous ply having a stiff tip section and being
unit through the medium of the full length ?brous
otherwise ?exible throughout its length, a thick
It will be seen that the completely formed
platform sole unit as illustrated in Fig. 3 may
be placed directly on the last bottom and em
ployed as a combined insole and platform sole in
making a shoe upon a last, or it may be stitched
directly to the upper and binding strip of a shoe
made off the last by the so-called“‘California
process.” In either case the sole is a complete
unit which may be incorporated in its ?nished
condition into the shoe structure by the usual
shoemaking steps generally carried out in com
mercial manufacture.
The circular perforation 14 which extends
through both the plies I0 and I2 is ?lled with
a circular plug ll of resilient material such, for
example, as sponge rubber. This may be ce
mented about its circumferential wall and in
serted at any convenient time in the manufac
ture of the platform unit. It increases the cush
to a feather edge located in the shank of the
20 unit, the said plies being apertured and contain
ing a resilient plug which is exposed in both sur
faces of the forepart of the unit, and both of said
plies being transversely slashed in the forepart
by slashes intersecting the aperture therein.
3. A platform sole unit comprising an integral
ply extending continuously from the tip to the
heel-seat, a thick platform ply of resilient com
position co-extensive with the forepart of the
?brous ply, beveled at its rear edge and trans
30 versely slashed in a plurality of slashes in ad
_ Vance of the ball line, a curved steel shank stiff
ener secured in face-to-face contact with the
?brous ply throughout its shank portion and on
the face opposite to the platform ply, and stiff
35 ?bre shank pieces enclosing the shank stiffener
on one side and overlapping the beveled portion
ion effect of the sole and the comfort of the shoe '
of the platform ply on the other side of the unit.
in wear.
4. A platform sole unit comprising a continu
The platform sole unit above described may
ous ?brous ply extending from the tip to the
be employed with particular advantage in manu 40 heel-seat, a thick platform ply of resilient com
facturing a shoe lasted on the last. When so
position cemented to the forepart of the ?brous
used the unit is tacked to the last bottom and
ply and tapering rearwardly into the shank por
the upper lasted over the ?brous ply l2. The
tion thereof, a cushion insert ?lling a predeter
platform ply is ?nished about its edges by a
mined area in the forepart of both plies, the
suitable binding strip and will appear through
the upper of an open toe shoe or sandal.
platform ply being transversely slashed by slashes
terminating at the periphery of said insert, and
narily a somewhat thinner platform ply will be
a stiff ?bre shank piece cemented to the heel
used in making shoes in which the platform is
seat and shank portions of the ?brous ply and
to be located within the upper. In employing
overlapping the rear end of the platform ply.
the'sole unit of my invention in shoes made by 50
5. An insole unit of the platform type, com
the so-called “California process,” a thicker plat
prising a full length ply of tough insole material
form ply may be used and the upper lasted by
approximately 2 to 4 irons in thickness, a ?exible
stitching to the margin of the platform ply. In
platform ply of substantially greater thickness
shoes made by this process it will be understood
cemented in face-to-face contact to the fore
that the platform lies wholly outside the upper. 55 part of the full length ply and having a rear
‘While I have shown the ?brous ply [2 as lo
wardly tapering section which terminates at the
cated beneath the platform ply Ill, when the
forward end of its shank, both of said plies hav
composite sole is incorporated in a shoe under
ing aligned apertures in their foreparts and
certain conditions it may be desirable to reverse
slashes which extend into both plies, and a cush
the position of these two plies and such modi?ca 80 ion plug retained in said apertures, the insole
tion of the illustrated construction is within the
unit thus presenting a cushion forepart of sub
scope of the present invention.
stantial thickness and a thin shank and heel
Having thus disclosed my invention and de
seat portion.
scribed in detail an illustrative embodiment
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