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Патент USA US3032800

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May 8, 1962
3,032,790
H. SCHWABE
LASTING MACHINE FOR SHOE MANUFACTURE
Filed April 17, 1961
2 Sheets-Sheet 1
INVENTOR.
#(PMA/V
SC/IWABE
May 8, 1962
3,032,790
H. SCHWABE
LASTING MACHINE FOR SHOE MANUFACTURE
2 Sheets-Sheet 2
Filed April 17, 1961
FIG‘. 5
FIG. 4
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BY
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United States Patent 0 ”
2
1
3,032,790
LASTH‘JG MACHINE FOR §HOE
MANUFACTURE
Herman Sehwabe, 420 West End Ave, New York, N.Y.
Filed Apr. 17, 1961, Ser. No. 113,579
7 Claims. (Cl. 12-7.1)
This invention relates to the manufacture of shoes,
and more particularly to lasting machines.
Machines are already known which pull an upper
around a last and fold the marginal portion of the upper
inwardly around an insole, the latter being cemented to
hold the upper. Pincers are used to pull the upper,
3,032,799
Patented May 8,v 1962
18 toward the left to bring the lasting mechanism to
the shoe on the rest; a cylinder at 20 causes lever 22 to
move a toe presser 24 against the top of the shoe; a cylin
der 26 causes lever 28 to move a heel abutment 30
against the heel of the shoe. Thereafter ?ve pincers, not
shown (a toe pincer, two side pincers, and two ball
pincers), pull the upper downwardly and inwardly, this
resulting from the operation of small hydraulic cylin
ders controlling the individual pincers.
Cylinder 32 then causes movement of the wipers.
There is a pivotal movement toward one another, and
also a bodily movement of both wipers in a direction
longitudinal of the shoe, that is, toward the left as seen
in FIG. 1. As soon as the wipers move in beneath the
followed by ?at wipers which help smooth the upper
15 shoe enough to support the shoe, the toe rest or support
material against the bottom of the insole.
14 descends, by release of toggle 15 by a cylinder at
Such machines have worked well, but now when point
ed shoes are in fashion, dif?culty has arisen because of
the gathering of an excessive amount of upper material
at the toe. This excess upper material must be cut away,
17, and the ?ve pincers are released and retracted, there
by clearing the path for additional movement of the
wipers.
and it has already been proposed to provide a trimmer 20 Referring now to FIGS. 2-5 of the drawing, the last
ing machine comprises a pair of ?at wipers 36 and 38,
knife, with additional mechanism to operate the same
and a knife 40 which is mounted on that vface of the
following the operation of the wipers. Such a knife has
wipers which is away from the shoe being lasted. The
been operated either by a hand lever or by a power
knife is ?at and has its cutting edge 42 extending in a
cylinder.
The general object of the present invention is to sim 25 direction transverse of the direction of longitudinal move
ment of the wipers, for movement therewith. The knife
plify the mechanism and the operation of such lasting
40 is connected to the Wipers, the coupling means com
machines. A more speci?c object is to provide a trim
prising slots 44 and studs 45 (FIG. 2~A) received in
mer or knife that is moved by the movement of the wipers,
the slots 44 and in threaded holes 46.
so that the operation of the knife is automatic and is
In preferred form the slots are disposed at divergent
simultaneous with the operation of the wipers, and re
angles relative to the direction of longitudinal move
quires no additional power cylinder or other operating
ment because with such an arrangement the inward or
mechanism.
pivotal movement of the wipers toward one another,
To accomplish the foregoing general objects, and other
causes a cutting movement of the knife additional to the
more speci?c objects which will hereinafter appear, my
invention resides in the lasting machine and knife and " bodily longitudinal movement of the wipers. The slots
44 preferably are provided in the knife, and the holes
wiper elements, and their relation one to another, as are
46 in the wipers, thereby minimizing the change needed
hereinafter more particularly described in the following
in the machine as originally manufactured. A single
speci?cation. The speci?cation is accompanied by draw
machine may be equipped with many pairs of wipers, to
ings in which:
FIG. 1 is a vertical section through a known lasting 40 ?t the many different sizes and shapes of shoes. These
are drilled and tapped at ‘46.
machine to which my improvement has been applied;
The knife 40 is preferably arcuately shaped, that is,
FIG. 2 is a perspective view showing the wipers and
the knife has ends 48 which extend in the direction of
knife in disassembled relation;
the wipers, and the knife is dimensioned to ?t between
FIG. 2-A is a fragmentary vertical section through one
of two studs used to connect the parts shown in FIG. 2; 45 the wiper supports, as next described, and therefore does
not interfere with the normal operation of the same.
FIG. 3 is a fragmentary bottom plan View showing
Referring to FIGS. 4 and 5, wiper 36 is pivotally held
the wipers and knife in their closed condition;
between the upper and lower plates of a movable wiper
FIG. 4 is a section taken approximately in the plane
support 50, and wiper 38 is pivotally held in a corre
of the line 4—4 of FIG. 1, and drawn to larger scale;
50 sponding movable wiper support 52.
and
FIG. 5 is a partially sectioned elevation looking to
ward the right side of the mechanism shown in FIG. 4.
Referring to the drawing, and more particularly to
FIG. 1, the lasting machine there shown is one made
The wipers are
pivotally connected to the wiper supports at 54 and 56
respectively. The movable wiper supports are carried
between the upper and lower plates of relatively stationary
wiper supports 58 and 60 (the lower plate being omitted
in FIG. 4), which constitute a wiper head carried at
by Schoen & Cie. G.m.b.H. of Pirmasens, West Germany,
62 by a piston-like member 64. The latter is in alignment
it being their model 63C “Pulling Over and Toe Last
with a piston ‘66 movable in a cylinder 32, operated like
ing Machine.” The said machine is disclosed and de
the other cylinders by an oil supply, connected at 68
scribed in a copending U.S. patent application of Albert
(FIG. 5). Piston 66 carries a yoke or cross bar 70.v
Michel and Herbert Schindler, Serial No. 19,222, ?led
April 1, 1960, and entitled “Machine for Pulling Over 60 The latter is connected by adjustable links 72 and 74 to
the movable wiper holders 50‘ and 52.
a Last and Gluing the Uppers of Shoes.” FIGS. 1, 4,
On re?ection it will be seen that when hydraulic power
and 5 of the present drawing correspond substantially to
is applied to cylinder 32 the piston 66 and yoke 70
FIGS. 2, 13 and 14 of the said co-pending patent appli
cause pivotal inward movement of the wipers 36 and 38.
cation.
Referring to FIG. 1, a last 12 is preliminarily provided 65 Thereafter an axial piston projection or stud 76 reaches
and bears against the piston 64, which results in bodily
with an insole on its bottom and an upper around the
movement of the wipers in a direction longitudinal of
last. This assembly is only schematically represented in
the shoe 12. Return movement is caused by compression
FIG. 1 by the last 12, no attempt being made to show
springs 78 and pull springs 80‘. The stud 76 and the links
the details of the upper and the insole. The assembly is
placed on a bottom rest 14, and a treadle is operated 70 72, 74 are adjustable to fit different shoes.
through a series of steps.
As a result of these steps a
cylinder 16 moves a machine head generally designated
‘In FIG, 4 the wipers are shown in open position,
and the knife 49 is retracted. FIG. 3 shows the wipers
3,032,790
3
in advanced position, with the knife 40 at the end of
its cutting stroke. It will be seen that the travel of
the Wipers for movement therewith, the ends of said knife
having means coupling the same to the wipers, said cou
the knife is made up of two components, one resulting
pling means comprising slots disposed at divergent angles
from the inward. movement of the wipers as applied by
relative to the direction‘ of longitudinal movement, and
the studs 45 to the divergent slots 44, and the other
studs slidably received in said slots, whereby the inward
resulting from the bodily movement of the wipers and
movement of the Wipers causes a cutting movement of.
the knife in a direction longitudinal of the shoe addi
tional to the longitudinal movement of the wipers, the
resulting automatic movement of the knife serving to
knife in a direction longitudinal of the shoe. Thus in FIG.
4 the studs are at the outer ends of the slots whereas
in FIG. 3 the studs are at the inner ends of the slots.
FIGS. 3 and 4 also show how the contour of the
sever excess upper material gathered at the toe of the
knife is such that it fits within the wiper supports 59
and 52, and thus may rest ?at against the face of the
wipers. This relation is shown at 38, 4t}, 42 in FIG. 5
of the drawing. It will understand that with the shoe
shoe.
bottom face
spaced from
the wipers.
bunched-up
of said wipers which is away from the shoe being lasted,
4. A shoe lasting machine comprising a pair of ?at
opposed wipers, means to move the same pivotally toward
one another inward of and also longitudinally of a shoe
in erect position, as shown in FIG. 1, the knife is on the 15 in said machine, a knife pivotally mounted on that facev
of the wipers. Its trimming operation is
the insole by the amount of the thickness of
This is satisfactory because it is only the
excessive upper material which is to- be
trimmed away.
The present invention is not limited to the particular
lasting machine here shown, but is applicable to other
lasting machines which use wipers of the same general
character. One example is the model LM6 Bed Laster
made by United Shoe Machinery Corp. of Boston, Mass.
Other examples are the lasting machines shown in US.
patents to Charles F. Pym 1,274,589 and 1,174,590, dated
August 6, 1918, and US. Patent to Kamborian 2,210,586,
granted August 6, 1940. It will be understood that in
some of these machines the shoe is placed in the machine
upside down, and in such case the knife is on the upper
said knife being ?at and having its cutting edge extending
in a direction transverse of the direction of longitudinal
movement of the wipers for movement therewith, the
ends of said knife having slots disposed at divergent angles
relative to the direction of longitudinal movement, and
said wipers having studs slidably received in said slots,
whereby the inward movement of the wipers causes a
cutting movement of the knife in a direction longitudinal
of the shoe additional to. the longitudinal movement of
the wipers.
5. A shoe lasting machine comprising a pair of op
posed arcuately shaped wipers, means to move the same
pivotally toward one another inward of and also longi
tudinally of a shoe in said machine, a knife pivotally
mounted on that face of said wipers. which is away
from the shoe being lasted, said knife having its cutting
side of the wipers instead of being on the lower side
edge extending in a direction transverse of the direction
of the wipers.
of longitudinal movement of the wipers for movement
It is believed that the construction and operation of
my improvement in lasting machines, as well as the ad 35 therewith, the ends of said knife extending in the direc~
tion of the Wipers and having slots disposed at divergent
vantages of the same, will be apparent from the foregoing
angles relative to the direction of longitudinalv move
detailed description. It will also be apparent that while
ment, and said wipers: having studs slidably received
I have shown and described the invention in a preferred
in said slots, whereby the inward movement of the
form, changes may be made in the structure shown with
out departing from the scope of the invention, as sought 40 wipers causes a cutting movement of the knife in a
direction longitudinal of the shoe additional to the longi
to be defined in the following claims.
tudinal movement of the wipers, the resulting auto
I claim:
matic movement of the knife serving to ‘sever excess
1. A shoe lasting machine comprising a pair of opposed
upper material gathered at the toe of the shoe.
wipers, means to move the same pivotally toward one
6. A shoe lasting machine comprising a pair of op~
another inward of and also longitudinally of a shoe in 45
posed wipers, means to move the same pivotally toward
said machine, a knife pivotally mounted on that face of
one another inward of a shoe in said machine, a knife
said’ wipers which is away from the shoe being lasted,
pivotally mounted on that face of said wipers which
said knife having its cutting edge extending in a direc
is away from the shoe being lasted, said knife having
tion transverse of the direction of longitudinal movement
its cutting edge extending in a direction transverse of
of the wipers, said knife being connected to the wipers
the wipers and of the long axis of the shoe, the ends
for movement therewith in the direction of movement
of said knife having means coupling the same to the.
of the wipers longitudinally of the shoe, the resulting
wipers, said coupling means comprising slots disposed
automatic movement of the knife serving to sever excess
at divergent angles relative to the long axis of the shoe,
upper material gathered at the toe of the shoe.
2. A shoe lasting machine comprising a pair of flat 55 and studs slidably received in said slots, whereby the
inward movement of the wipers causes a cutting move
opposed wipers, means to move the same pivotally toward
ment of the knife in a direction longitudinal of the
one another inward of and also longitudinally of a shoe
shoe, the resulting automatic movement of the knife
in said machine, a knife pivotally mounted on that face
serving to sever excess upper material gathered at the.
of said wipers which is away from the shoe lasted, said
knife being ?at and having its cutting edge extending in a 60 toe of the shoe.
7. A shoe lasting machine comprising a pair of ?at
direction transverse of the direction of longitudinal move—
opposed wipers, means to move the same pivotally to
ment of the wipers for movement therewith, the ends
ward one another inward of a shoe in said- machine, a
of said knife having means coupling the same to the
knife pivotally mounted on that face of said wipers which
wipers, said coupling means comprising slots and studs
received in said slots, the resulting automatic movement 65 is away from the shoe being lasted, said knife being ?at
and having its cutting edge extending in a direction trans-7
of the knife with the wipers serving to sever excess upper
verse of the wipers and of the long axis of the shoe, the
material gathered at the toe of the shoe.
ends of said knife having slots disposed at divergent
3. A shoe lasting machine comprising a pair of opposed
angles relative to the long axis of the shoe, and said
wipers, means to move the same pivotally toward one
another inward of and also longitudinally of a shoe in 70 wipers having studs slidably received in said slots, where
by the inward movement of the wipers causes a cut
said machine, a knife pivotally mounted on that face of
ting movement of the knife in a direction longitudinal
said wipers which is away from the shoe being lasted,
said knife having its cutting edge extending in a direction’
transverse of the direction of longitudinal movement of
of the shoe.
'
No references cited.
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