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Патент USA US2138227

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Nov. 29, 1938.
~
I, F_ DAMON
2,138,227
INSOLE AND METHOD OF MAKING SAME
Filed March 18, 1936
INVENTOR’
‘
BY
MW
TTORNEYS.
Patented Nov. 29, 1938
UNITED STATES PATENT
.
OFFICE
2,138,227
‘INSOLE AND METHOD OF MAKING SAME
Isaac F. Damon, Belmont, Mass, assignor to
Compo Shoe Machinery Corporation, New York,
N. Y., a corporation of Delaware
Application March 18, 1936, Serial No. 69,491
5 Claims.
This invention relates to the manufacture of
foot wear, and'more particularly to the making
of shoes having an improved insole construction.
(Cl. 12-146)
initially somewhat thicker than the required
thickness of the ?nished insole. An insole hav
General objects of the invention are to provide
5 a novel and improved form of insole, having
ing a raised landed portion I I at its central fore
part is formed from such blank by compressing
the heel portion I2 and shank portion I3 thereof 5
relatively thick and thin portions, which is better
adapted to fit in a completely assembled shoe.
Another object of the invention is to provide
an improved insole having a central forepart
10 portion which is thicker than the remainder
up to the ball line and by further compressing
the marginal forepart portion l4 while leaving
the central forepart portion ll uncompressed.
This compressing operation decreases the thick
ness of the pressed parts and also may slightly 10,
thereof, so as to provide integral ?ller material
laterally expand them, so that the blank l0 may
adapted tooccupy space which would otherwise ' initially be somewhat smaller in dimension than
have to be compensated for in shoes of the vari
ous types to which such insole is applicable.
15
Other objects of the invention are to provide
a method of making an insole having improved
characteristics such as those indicated above, and
to provide methods of making shoes involving
utilization of such an insole.
20
Other objects of the invention will in part be
the required insole, or the latter may after com
obvious and will in part appear hereinafter.
pression be trimmed to the required size by any
known or suitable trimming equipment. Com- 15
pression of the heel, shank and marginal fore
part portions causes these parts to become denser
than the initial stock, and makes them thinner
while retaining and even enhancing their initial
strength, which is desirable‘- The noh-com- 20
pacted central forepart portion, while preserving
The invention accordingly comprises ' the
several steps and the relation of one or more of
such steps with respect to each of the others, and
the added relative thickness to act as a ?ller to
compensate for the upper lasting allowance, also
retains its initial relatively low density and high
_
25 the article possessing the features, properties,
and the relation of elements, which are exempli?ed in the following detailed disclosure, and
the scope of the inventionwill be indicated in
the claims.
flexibility- .
'25
This compression of the insole blank may be
effected in various ways, one suitable apparatus
therefor comprising a pair of pressure rolls 15
and I5’ (Fig. 3), one of which has a depression
30
For a fuller understanding of the nature and
objects of the invention reference should be had
or matrix I6 corresponding in outline with the 30
land H which is to be formed on the 1115018- A
to the following detailed description taken in
connection with the apcompanying drawing, in
the matrix It and is run between the rolls, which
which:
35
'
blank 10 is suitably registered with respect to
are spaced so as to compress the required por
Fig, 1 is s, perspectlvg view of a rounded insole
blank used in the construction of an insole em_
bodying the principles of this invention;
Fig. 2 is a. perspective view of an insole made
from the blank of Fig, 1;
40 Fig, 3 is a fragmentary illustration of one
form of apparatus provided to make the insole
tions of the insole while leaving the land H at 35
substantially its initial thickness. Other forms
of pressing equipment may be used, however;
for example- if desired the heel and shank P01"
tions may be squeezed between rollers up to the
ball line, and the marginal forepart portion I4 40
may thereafter be Compressed between Other
of Fig. 2;
pressure rollers which are mounted so as to en
Fig- 4 is a transverse vertical sectional view
across the forepart of one form of shoe embody-
able the stock to be inserted edgewise between.’
Pressing die equipment of Suitable con?guration
45 ingthe insole of the present invention; and
Fig. 5 is a transverse vertical sectional view
takenv across the forepart of another form of
shoe utilizing such insole.
'
Referring more particularly to the drawing,
50. there is shown a rounded insole blank In formed
of compressible material such as a manufactured
composition of plant ?bers or the like. Such
insole materials are well known to the trade, one
such, for example, being commercially available
under the trade name Onco.
Any such material
. is suitable for the purposes of this invention,
provided it is ‘capable of being compressed or
moulded under pressure and is able to retain the
form which it is thus compelled to assume.
60
The blank l0, formed of such a material, is
may also be used if desired-
,
Such an insole, having an integral landed D01‘
tion at its central forepal‘t. may be used to ad
vantage in various shoe assemblies, two illus
45
trative assemblies being shown in Figs. 4 and 5.
In Fig- 4 there is shown a shoe which is adopted 50
to be lasted substantially along the lines of the
McKay process, as is commonly done, for ex
ample, with many cemented shoe constructions.
Here, the insole is located along the bottom of a
last I‘! with its landed portion H facing out 55
wardly. An upper I8 is then pulled over and
lasted to the heel and shank portions of the in
sole and to the relatively thin marginal portion
l4 thereof. The lasting allowance I8’ of such
upper istrimmed so as to approach but not over
1
2,138,227
2
lap the shoulder dividing the edge of the landed
portion, and the latter is of such thickness that
it substantially occupies the space between the
inturned edges of the lasting allowance. Here
tofore it has been customary to ?ll this space
with a loose cork ?ller, or some other form of
separate filler material. The present arrange
ment, wherein the lasting allowance l8’ and the
thicker insole portion ll provide a substantially
10 ?at even surface at the bottom of the forepart of
the upper, successfully eliminates such loose
?ller materials, which are liable to become dis
lodged and to gather into undesirable lumps or
masses during the wear of the shoe, and also pro
15 vides a comparatively ?exible construction.
An outsole IS, the ?esh surface of which may
be ?at, is placed against the bottom of the lasted
upper and attached thereto in any suitable man
ner, the ?at surface of the forepart of the upper
being adapted snugly to ?t thereagainst.
Any suitable form of lasting and sole-aflixing
operations may be employed, but preferably these
are carried out through the use of pyroxylin
cement, which may be applied between the upper
and the insole and between the outsole and the '
lasting allowance of the upper.
In Fig. 5 another form of shoe utilizing the
insole of Fig. 2 is shown. The general construc
tion of such shoe is somewhat similar to that
shown in Fig. 12 in the copending application of
Frank Maiellano, Serial No. 36,057, ?led August
14, 1935. As is described in greater detail in that
application‘, an outsole 20 is provided with a
slightly raised land 2| at its central forepart por
tion by splitting a thin ply from the heel, shank
and marginalforepart portions of the ?esh side
thereof, while leaving such land at the central
forepart area and forming a corresponding aper
ture in the central forepart area of the split-off
40 ply. This ply, designated 22, is then assembled
with an insole such as that shown in Fig. 2, being
cemented to the ?at face thereof on the reverse
side from the insole land II. The ply 22 and
the insole may be trimmed so as to be marginally
45 coextensive either before or after such cementing
operation.
The composite insole thus formed is located on
a ?at bottom last I‘! with the ply 22 facing there
against. An upper 23 is then pulled over and
its lasting allowance 23' is attached to the insole,
preferably by means of cement. The lasting al
lowance of the forepart is trimmed so as to ap
proach but not overlap the land II on the insole,
and the latter, in turn, is constructed so as to
be substantially coextensive with the aperture
formed in the insole ply 22. The outsole 20 i
then located against the bottom of the laste
upper with its land 2| facing and supported by
the. thicker landed portion of the insole, cement
having been applied or activated between the
marginal portions of the outsole and lasted upper.
The outsole is then pressed to the upper in any
suitable or known type of sole-a?lxing press hav
ing a pressure-applying pad or diaphragm.
A shoe constructed in this manner will at its
interior-forepart portion resemble in appearance
. the now popular shoe construction, wherein a
landed outsole is mated withpan apertured in
sole, since it will present to view the looped or
70 apertured insole ply 12, which is ?ush with and
exposes the interior surface of the insole stock l0.
Because of the presence of the thickened insole
portion II, a shoe of this general construction
can be assembled on a ?at bottom last without
75 danger of depressing the central area of the out
sole forepart during the a?ixing operation, as will
be more clearly understood from the description
in the above mentioned application, Serial No.
36,057, as well as in another copending applica
tion of Frank Maiellano, Serial No. 36,056, ?led
August 14, 1935, wherein this problem of lasting
shoes having landed outsoles and complementary
insoles on ?at bottom lasts is fully discussed.
While two illustrative shoe constructions have
been shown, it will be understood that the insole 10
of the present invention is usable in various types
of shoes wherein a thickened ?ller‘ piece is re
quired at some portion of the shoe.
It will be seen that there have been provided
a method and a construction whichare well 15
suited to ful?ll their intended functions.
Since certain changes in carrying out the above
process, and certain modifications in the article
which embody the invention may be made with
out departing from its scope, it is intended that 20
all matter contained in the above description or
shown in the accompanying drawing shall be
interpreted as illustrative and not in a limiting
sense.
It is also to be understood that the following 25
claims are intended to cover all of the generic
and speci?c features of the invention herein de
scribed, and all statements of the scope of the
invention which, as a matter of language, might
30
be said to fall therebetween.
Having described my invention, what I claim
as new and desire to secure by Letters Patent, is:
1. An insole formed of relatively easily com- -
pressible material having permanently uniformly
compressed relatively thin heel, shank, and mar 35
ginal forepart portions and a thicker relatively
uncompressed central forepart portion of lesser
density and greater ?exibility than said shank
and heel portion.
2. A method of forming an insole which com
40
prises providing an insole blank of relatively
easily compressible and substantially inelastic
material, and compacting the heel, shank, and
marginal forepart portions thereof until they ‘are
thinner than the remaining central forepart por 45
tion, said latter portion being of lesser density
and greater ?exibility than said heel and shank
portions.
.
3. A method of forming an insole which com
prises providing an insole blank of compressible 50
material having greater thickness and less area
than the required insole, and compacting the
heel, shank and marginal forepart portions of
said blank until they have the required insole
thickness and area,‘ while leaving the central 55
forepart portion relatively thicker, less dense and
more ?exible than said compacted portions.
4. An insole formed of compressible material
having permanently compressed relatively thin
heel, shank, arid marginal forepart portions and 60
a thicker relatively uncompressed central fore
part portion, said thin portions having all of the
initial strength and said thicker portion having
all of the initial ?exibility of ‘said material.
5. A method of forming an insole which com
65
prises providing a compressible insole blank of
initially substantially uniform thickness, and per
manently compacting the heel, shank, and mar
ginal forepart portions thereof until they are
thinner than the remaining central forepart por-v 70
tion whereby the latter portion retains the initial
?exibility of said blank and said compacted thin
ner portions retain at least the initial strength
for lasting purposes of said blank.
'
ISAAC F. DAMON.
75
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