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Патент USA US2135546

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Nov. 8,1938.
D ,_-_ WALKER LET AL ‘
2,135,546
LAST
'
Filed July 51, 1937
Flgl.
lnven'rors.
unKHn Wczl K
S. Anders
VS.
Patented, Nov. s, 1938
2,135,546
UNITED‘ ‘STATES
PATENT OFFICE
2,135,546
LAST
Doris Franklin Walker, Gastonia, N. 0., and Wil
liam S. Anderson, Philadelphia, Pa.
Application'July 31, 1937, Serial No. 156,712
1 Claim.
This invention'relates to the manufacture of
welt shoes which have the outsole cemented to
the shoe bottom instead of stitched thereto.
In a welt shoe the welt and the outer marginal
5 portion of the outsole which contacts with the
welt project somewhat beyond the edge of the last
on which the shoe is made, and one problem in
volved in the cementing of an outsole to the bot
. tom of a welt shoe is to provide for the applica
10 tion of the requisite amount of pressure between
the welt and said outer marginal portion of the
outsole to make the ?rm cemented union between
the two at the edge of the sole which is necessary
, in producing a satisfactory shoe by the so-called
"cement process.” It has been proposed to use a
welt hold-down having for its purpose to form a
sort of backing for the welt while the sole-attach
ing pressure is being applied}
It is one of the objects of the present invention
20 to provide a novel last for use in making welt
shoes in which the outsole is cemented to the
shoe bottom, which is so constructed that the
application of the sole-attaching pressure to the
outsole will result in forcing the welt toward the
(Cl. 12-133)
showing different embodiments of the invention.
In the drawing I indicates a last for use in mak
ing a welt shoe of the type in which the outsole
is cemented to the shoe bottom. The bottom face
2 of the fore part of the last is convex in a direc (71
tion transversely of the last, the convexity being
approximately such as to complement the con
cave shape which the foot-engaging face of a
shoe sole assumes after it has been thoroughly
10
broken in.
The last is also made with a rib-receiving
groove 3 in its bottom face adjacent the marginal
edge of the fore part, said groove being wider
than its depth and situated in a position to re
ceive the rib on the insole of the welt shoe during
the application of the sole-attaching pressure by
which the outsole is applied. This rib-receiving
groove 3 terminates at the shank portion of the
last but extends around the fore part thereof.
Said groove is not only wider than its depth but 20
the outer wall (19 in Figs. 2 and 4 and 23 in Fig.
5) is ?at and forms an angle of more than 135°
with the surface of the last bottom outside said
groove.
25 upper face of the outsole as Well as forcing the
The preliminary steps of making a welt shoe
outsole toward the welt, the result being that the
having an outsole cemented thereto by means of
my improved last are the same as in the making
, welt and the outsole will be ?rmly pressed to
gether and thus ?rmly cemented at their outer
edges without the necessity of using a welt hold
30 down or other means to provide a suitable back
ing for the welt.
A further object of our invention is to provide
a last for use in making welt shoes in which the
outsole is cemented to the shoe bottom, which last
is so constructed that when the shoe is initially
made the foot-engaging face of the sole will have
a concave shape approximating the concave
shape which the foot-engaging face of the sole
of a shoe assumes after the shoe has been well
broken in.
-
In order to give an understanding of the inven
tion we have illustrated in the drawing some se
lected embodiments thereof which will now be
described after which the novel features will be
45 pointed out in the claim.
In the drawing: ‘
Fig. 1 is a bottom plan view of a last embodying
my invention;
_
Fig. 2 is a transverse section through a lasted
welt shoe with the last therein before the outsole
is applied thereto;
Fig. 3 is a sectional view showing the step of
cementing the outsole to the shoe bottom in ac
cordance with our invention;
55
~
Figs. 4 and 5 are transverse sectional views
of any welt shoe, that is, the shoe may be lasted
in the usual way and then the edges 4 of the
upper 5 and the welt 6 will be stitched to the, rib 0
‘l of the insole 8 by means of the inseam stitches
9 as shown in Fig. 2. After the making of the
shoe has progressed to this point, then the next
step is to cement the outsole ID to the shoe bot
35
tom.
The last is so made that the rib-receiving groove
3 in the bottom thereof will be opposite the rib
‘l of the insole. When the outsole Ill is put in
position and the sole-attaching pressure is applied
thereto, the edge 4 of the upper, the rib ‘l and the
inner portion of the welt stitched thereto will be
forced toward the last and the portion l3 of the
insole to which the upper and welt are sewed
will be forced into the groove 3 as shown in Fig. 3.
The shape of the groove and the position of the 45
outer wall thereof is such that this deforming or
the insole as indicated at 13 tends to draw the
inner edge of the welt upwardly toward the last
with the result that the outer edge of the welt I
tends to move downwardly toward the edge of the
outsole. The outsole I0, therefore, will be sub
jected to the sole-attaching pressure which tends
UO
to force the edges of the outsole upwardly toward
the welt, and because of the deformity of the in
sole as shown at l3 the outer edge of the welt is 01
2
2,135,546
subjected to a downward pressure tending to
force it against the outsole, and these opposed
‘forces serve to ?rmly cement the welt and the
without departing from ‘the invention, provided
outsole together at the periphery without the use
Wall having the above-described angular relation
of a hold-down or other means to provide a back
to the last bottom and is so shaped that when the
ing for theWelt.
I
V
The sole-attaching pressure may be applied in
any approved way.
I
We have shown herein a pressure device com
10 prising a casing I4 having a chamber I5 adapted
to be ?lled with water, air or other ?uid, the top
I6 of the chamber being in the form of a ?exible
sheet which conforms to the shape of the outsole. l’
The sole-attaching pressure may be applied by ;_
15 forcing the lasted shoe and the outsole against
the ?exible top I6 of the chamber I5, or said pres
sure may be applied by in?ating the chamber I5
after the shoe has been brought into contact with
the top I6 thereof.
:20
7
'
The groove 3 in the bottom of the last may‘ have
various shapes without departing from thein
ventionr In Fig. 2 it is formed with a rather
abrupt inner wall I8 and a straight wall I9 which
3a.
Grooves of other shapes maybe employed
the groove is constructed to present the outer ?at
sole-attaching pressure is applied to the outsole ~
the deformation of the inner sole and the welt
resulting from forcing said inner sole into the
groove will cause the inner edge of the welt to- be
carried upwardlyrand the outer edge to be forced
downwardly into ?rm contact'with the outsole.
'It will be understood, of course, that in making
the shoe a suitable amount of ?lling‘material 25
will be used between the insole and the outsole.
A last having the construction herein illus 15
trated can also be advantageously used in making’
a shoe in which the outsole is sewed to the welt.‘
We claim:
7
'
A last for use in making welt shoes in which
the outsole is cemented to the shoe bottom, said
last having its bottom face convexedly curved in
a direction transversely thereof and being pro
vided on its bottom face with a relatively wide
extends nearly but not quite to the periphery of
the last, thereby leaving a marginal portion 20
V-shaped rib-receiving groove extending entirely
of the last bottom outside of the groove and
which makes an angle of more than 135° with
posite the rib of an insole of a welt shoe being ‘
the bottom surface of said marginal portion.
around the fore part of the last and situated op
made on the last to which the upper and welt of
said shoe are stitched, the depth of the groove
being less than its width at the surface of the
which also has the ?at outer wall 19 ascabove- ‘ 'last and the outer Wall of the groove being ?at so’
described, but has an inner Wall 2| which ‘is less and making an angle of more than 135° with the
abrupt or steep than the wall. I3 of the groove 3 bottom surface of the last whereby when the sole
in Fig. 2, thus making a somewhat wider groove. attaching pressure is applied to’ the outsole for
In Fig. 5 there is shown a last having a different cementing it to the shoe bottom the said rib will
form of groove indicated at 3b, said groove having be forced into said groove and the welt will have 35
'both side walls 23 of approximately the same a force applied thereto moving the outer edge
width and having a rounded apex, the outer wall thereof toward the outsole.
being ?at and having substantially the same an
DORIS FRANKLIN WALKER.
gular relation as the walls I9 of the grooves 3 and
WILLIAM S. ANDERSON.
In Fig. 4 the last is shown with a groove 360,
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