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Патент USA US3069715

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Dec. 25, 1962
M. H. RcsKE
3,069, 705
SHOE ‘TRIMMING MACHINES
Filed Feb. 15, 1962
3 Sheets-Sheet l
fnven for
Mlz‘on H Ros/<9
By his Afior'ney
460w
Dec. 25, 1962
M. H. ROSKE
‘
3,069,705
SHOE TRIMMING MACHINES
Filed Feb. 15, 1962
5 Sheets-Sheet 2
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8 40V @0
Dec. 25, 1962
M. H. ROSKE
3,069,705
SHOE TRIMMING MACHINES
Filed Feb. 15, 1962
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Patented Dec. 25, I962
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the insolewhen the shoe is held bottom upward. Before
3,069,705
SHOE TRIMMKNG MACHINES
Milton H. R?Si{@,'EOKf0l‘d, Mass, assignor to United Shoe
Machinery Corporation, Fiemington, ELL, :1 corpora
tion of New Jersey
Filed Feb. 15, 1962, Ser. No. 173,577
8 Claims. (Cl. 12-—.4.3)
the outsole can be attached this extension must be trimmed
off as close to the line of stitches as is possible. Thus,
a similarity will be seen between the breast ?ap oper
ation and the inseaming operation since a projecting
extension of material is formed in both operations, which
extensions must be trimmed as close to the shoe or heel
as is possible.
This invention relates-to shoe machinery and particu
Accordingly, it is still another object of this'invention
larly to machines for trimming surplus extensions from 10
to provide a machine which will permit a semiskilled
partially fabricated shoes. This application is a con
operator to trim the inseam of a shoe with a minimum
tmuation-in-part of my copending application Serial No.
amount of skill required.
43,216 ?led July 15, 1960. 7
Prior attempts have been made to produce machinery
Numerous operations in the ,manufacture of shoes
result in surplus materialextending‘from the shoe as a 15 in accordance with the above objects and'have resulted
in machinery including knives which reciprocate in linear
?n or rib~like projection. Such extensions occur along
paths relatively to stationary anvil or .shearing members
the edge of a breast ?ap where it is secured to a heel. A
which engage either the shoe or the surplus extending
similar extension or projection results from the formation
material. Machines have also been built which employ
of the inseam wherethe ,uppeniining, and welt are sewn
to the insole rib. Further surplus extensions are found 20 curved oscillating knives which cooperate with stationary
anvils or shear guides but in both types of machines
along the margin of upper material and lining adjacent
difficulty arises in following the sharp contours of the
'the line along which they are lasted or otherwise attached
shoe. A machine of this type will be seen in United
‘to an insole. In each of these‘instances, as well as in
States Patent No. 1,062,756, issued May 27, 1913 to
>many others encountered in the manufacture of shoes,
surplus extensionsjof material must be trimmed or other 25 H. A. Ballard. Furthermore, it requires extreme skill
‘in guiding the shoe relatively to the anvil or shear guide
wise removed beforethe next shoemaking operation can
to obtain the desired bevels.
‘begin.
In accordance with these objects and as a feature of
It is anjobject of this invention to provide a machine
the invention, applicant'has provided machines for trim
for quickly and efficiently severing surplus extensions of
material from‘partially fabricated shoes which requires 30 ming surplus extensions of material from partially fabri
cated shoes or heels or both which machines employ a
minimum skill on the part of an operator.
.
While there have been many attempts to produce
‘machinery toduplicate or improve upon hand operations
in shoemakingthe value of such machinery is dependent
not only upon its speed, which must be at least as fast
as thehand method, but upon, the simplicity and economy
'of its- construction.
trimming knife having a cutting edge ‘formed at one end
and which is reciprocated through an extremely short
stroke but at a very high rate of speed to sever the sur
plus material. Cooperating with the knife is ashearing
wheel of generally frusto-conical, outer con?guration, the
major periphery of which engages the surplus extension
‘of material adjacent its intersection with the shoe or
It is, therefore, another object of this invention to
‘heel and provides thereby not only a guide for following
provide a machine for trimming surplusjportions from
partially fabricated shoes which will operate faster than 40 the contour of the shoe .or heel but also offers resistance
to the extension as the‘knife makes a trimming stroke.
conventional hand methodsand which machine is inex
pensive to build and to operate.
‘
An excellent example of the need for trimming a sur
plus extension of material is found ‘as a result of attach
The shearing Wheel may also serve as a feeding instru
mentality if power driven.
. ‘The shearing wheel'has an interior annular depression
inga breast ?ap. A technique of manufacturing women’s 45 formed in it. The depression includes an annular surface
which extends substantially to the. periphery of the shear
shoes having an integral outsole and breast ?ap which is
ing wheel where it terminates in a circular edge. The
becoming more prevalent involves securing the breast
annular surface and the periphery form between ‘them an
?ap to the heel at the same time that the sole is cemented
extremely thintapering wall concentric with the axis of
to the bottom of the shoe. The edge of the sole is sub
sequently set and ‘the contiguous portion of the breast 50 rotation. The annular surface of the shearing wheelis
complementary to the surface of the trimming knife and
‘?ap must be made to conform in a smooth, continuous
is initially adjusted into substantial shearing engagement
line to the sole edge and to the edge of the heel. It
with the knife. The stroke of the knife is adjusted so
is the usual practice-to sever this excess by hand which
that its shearing edge never moves completely out of the
requires extreme skill to obtain the‘ proper closeness and
‘bevel without cutting or otherwise damaging the heel 55 annular depression in the shearing wheel and thereby does
not chop the surplus material which would tendto de
or upper material. ‘Not only ,is extreme skill required
crease the eifective life of both the knife and the shearing
to ‘obtain the correct bevel at the lower portion of the
wheel. As an optional feature, applicant has also pro
heel, but also to blend the trimmed breast ?ap smoothly
vided a gage spaced laterally from the Wheel providinga
with the edge of the outsole at the shank area.
gap to accommodate the surplus extension, the gage being
Accordingly, it is another object of this invention to
bifurcated and extending on both sides of the oscillating
provide a ‘machine‘for performing a breast ?ap trimming
knife in the direction of feed of the work.
operation which‘will permit a semiskilled operator to
produce a properly trimmed and beveled breast ‘?ap not
The above and other features of the invention including
only along the (heel but along the shank portion of
various novel details of constructionand combinations
the shoe.
65 of parts will now be more particularly described with
Another operation resulting in the formation of a sur
reference to the accompanying drawings and pointed out
plus extension of material during shoe making results
in the claims. it will be understood that the particular
from the sewing of the inseam. In this operation'the
machines embodying the invention are shown by way of
upper material (with or without a liner) and the Welt
illustration only. While the invention is shown embodied
are sewn to ‘a rib extending from the sole attaching sur 70
in both a breast ?ap trimmer and an inseam trimmer it
face of an insole. The resultant inseam is a projection
is not limited to either since the principles and features
of substantially parallel layers extending upwardly from
of this invention may be employed in varied and numer
3,069,705
3
ans embodiments without departing from the scope of
the invention.
In the drawings:
FIG. 1 is a side elevation, partly in section, on an en
larged scale of the operating instrumentalities of a breast
?ap trimming machine embodying the invention and
4
convex surface 38 of the knife and in the initial position
of adjustment is in substantial shearing engagement there
with. Thus, the shearing wheel not only offers resistance
to the breast ?ap material during trimming but also lends
support and rigidity to the knife blade.
The knife has formed on it a sharp cutting edge 40
adjacent its free end which edge is formed at an oblique
angle with the plane P containing the periphery of the
stroke;
shearing wheel 24, which plane is de?ned by the circular
FIG. 2 is a fragmentary showing of the instrumentalities
of FIG. 1 with the knife at the opposite end of its trim 10 intersection of the surface 36 with the periphery 32. It
will be obvious that the cutting edge 40 is also formed
ming stroke;
at an oblique angle to the plane in which the knife oscil
FIG. 3 is a sectional plan view taken along the line
lates. The stroke of the knife is adjusted so that the
III—III of FIG. 1;
cutting edge extends transversely of the plane P and so
FIG. 4 is a side elevation showing a supplemental gage
that at least a portion of the cutting edge 40 of the
in operative position relative to the operating instrumen 15 knife
at all times is within the concave portion 34 of the
showing a trimming knife at one end of its trimming
talities;
FIG. 5 is a sectional view taken along the line V—_V
of FIG. 4;
shearing wheel. In its most withdrawn position, as seen
in FIG. 2, the knife will be seen within the concave por
tion of the shearing wheel as well as in the FIG. 1 posi
FIG. 6 is a side elevation, partly in section and similar
tion which represents the most advanced position of the
to FIG. 1, showing an inseam trimmer embodying the 20 knife.
Because of this, the knife never chops into the
invention; and,
breast ?ap.
FIG. 7 is a side elevation, partly in section, of the
Initially the height of the shearing wheel is adjusted
invention embodied in a somewhat different form of
by the slot and screw connection 30 so that there is shear
inseam trimmer.
ing engagement between the surface 38 of the knife and
The invention is illustrated as embodied in a breast 25 the surface 36 of the shearing wheel. However, it will be
?ap trimming machine in FIGS. 1 to 5, the operating
obvious that as normal wear takes place, a minute but
portion of which is shown in enlarged section in FIGS. 1
?nite gap may develop between these members which,
and 3. The machine employs a conventional base and
mechanically, is not the optimum desirable condition.
head (not shown) and includes a bracket 2 which mounts
The members nevertheless will still be in substantial shear
the operating instrumentalities. Depending from the 30
ing engagement.
bracket 2 is a bifurcated bracket 4 between the legs of
It will be obvious that with the shoe held in the posi
which is mounted a knife bracket 6. The bracket 6
tion shown in the drawings, a bevel B is formed along
pivots about a center 8 on a stud 10. A curved trimming
the trimmed breast ?ap and the angle of the bevel may
knife 12 is mounted on the bracket 6 by a clamp 14
be changed-by varying the angle at which the shoe is
35
secured to the bracket by screws 16. To remove the
presented to the machine. However, since the edge 33
knife for sharpening or adjustment, the screws 16 are
of the shearing wheel formed by the periphery 32 and
loosened and the knife 12 removed from the clamp 14.
the surface 36 is subtsantially a thin wall blade, varying
Oscillating motion is imparted to the knife by a con
the angle of presentation does not substantially alter the
necting rod 18 which receives its motion from an eccen 40 closeness of the trim which would otherwise be the case
tric drive or other conventional means (not shown).
if the aforementioned rigid and thick anvil members were
The connecting rod is secured to the bracket 6 by a
employed. As will be seen in FIGS. 1 and 4, the surplus
stud 20 and is held thereto by a snap ring 22. In one
extension F of the breast ?ap is illustrated de?ected away
illustrative form of the invention, the knife is oscillated
from the heel. This de?ection in no way is caused by
through a stroke of .054 inch at a rate of approximately
the trimming instrumentalities but is shown to illustrate
six thousand strokes per minute.
a natural condition which may occur.
Cooperating with the knife 12 is a shearing wheel 24
As auxiliary equipment for use with the machine, there
freely rotatable on a stud 26 threaded in the lower end
is provided a gage 44 (FIGS. 4 and 5) which is adjust
of a bracket 28. The bracket is adjustably secured by a
ably secured to the bracket 2 by any convenient means
slot and screw connection 30 to the main bracket 2. The
(not shown). The gage is spaced from the plane P of
shearing wheel is generally frusto-conical in over-all con
the shearing wheel an amount sufficient to accommodate
?guration, although it comprises a plurality of conical
and cylindrical surfaces. The periphery 32 of the shear
ing wheel is engageable with the edge e of the heel H
adjacent its intersection with the surplus extension of
the breast ?ap F. Being freely rotatable and of a di
ameter of the general order of magnitude of the mean
diameter of the heel, the shearing wheel provides a ro
tatable guide which provides simple and accurate means
for following the intersection of the edge e and the flap F,
between it and the wheel the surplus extension of the ?ap.
The gage has a bifurcated lower end 46 with legs 48, 50
which straddle the knife and engage the breast ?ap below
the knife which is the portion cemented to the heel. The
gage tends to straighten the surplus portion from the FIG.
1 position to the position shown in FIG. 4 providing
better visibility while at the same time its lower end en
gages the secured portion of the breast flap. The gage is
particularly useful in assisting a new operator in “getting
particularly in the shank area of a heel which has a small 60 the feel” of the machine and obtaining the proper angle
radius of curvature as Well as adjacent the attached top
of the bevel B.
lift T.
FIG. 6 shows the invention embodied in an inseam
The shearing wheel has an interior concave portion
trimmer. The trimming instrumentalities include a knife
or depression 34 concentric with its axis of rotation A.
12 and a shearing wheel 24 identical with those shown in
The depression 34 includes a concave surface 36 extend 65 FIG. 1. Furthermore, the operating instrumentalities,
ing to the periphery 32 of the shearing wheel. The sur
including the connecting rod 18 and the shearing wheel
face 36 is annular, being generated about the axis A of
supporting bracket 28, etc., are also identical, the com
the shearing wheel 24, and extends to the periphery 32 at
mon reference characters in FIGS. 1 and 6 referring to
an acute angle. Together with the periphery 32 it forms
like parts.
a thin wall member which, in transverse section, tapers 70
The construction of the inseam of the usual welted shoe
to a substantial point at the intersection of the edge e
and the flap F, thereby assuring an extrememly close
in bottom up position is also shown in FIG. 6. The fol
lowing elements are included: a last 52, an insole 54, a
trim. The intersection of the surface 36 and the periphery
welt 56, a preformed insole rib 58, a lining 60, an upper
32 forms a circular shear edge 33 lying in a plane P. The
surface 36 in transverse section is complementary to the 75 62 and a line of stitches 64 that form the actual inseam
5
3,069,705
joint. Before an outsole can be secured to the welt and
the insole the surplus extension of the inseam extending
above the stitch line 64 must be severed.
The knife 12 and the shearing wheel 24 cooperate in
exactly the same manner as they do when severing excess
portions of a breast ?ap. It will be noted, however, that
in the inseam trimmer shown in FIG. 6 the shearing
wheel 24, instead of being freely rotatable, as in the
breast ?ap trimmer, is power driven. The wheel is at
6
face, and means for reciprocating the knife with at least
a portion of the cutting edge of the knife at all times
within the concave depression of the wheel and in sub
stantial shearing engagement with said annular surface
extending to the periphery.
4. A machine for trimming surplus extensions of ma
terial from partially fabricated shoes having, in com
bination, a substantially frusto-conical shearing wheel,
the major periphery of said wheel being engageable with
tached to a shaft 66 journaled in the bracket 28 and 10 the shoes adjacent the surplus extension with said sur
driven by a belt 68 which passes around a pulley 70
plus etxension projecting inwardly of said periphery, an
secured to the shaft 66. Thus, the shearing wheel 24 in
interior annular depression formed in the wheel concen
addition to being a shearing member and a guiding mem
tric with the axis of rotation and having an annular
ber also is a work feeding member.
surface extending substantially to said periphery, a trim
The gage 44 shown in FIGS. 4 and 5 may obviously 15 ming knife having a convex surface complementary to
be employed in the inseam trimming machine of FIG. 6
the transverse section of the annular surface extending
to the periphery, a cutting edge adjacent one end of the
ployed in the breast ?ap trimmer. It may be desirable,
knife intersecting the convex surface, and means for
however, to shape the work contacting legs 48 and 50
oscillating the knife about a center spaced from the
to conform to the outboard or external surfaces of the 20 wheel with at least a portion of the cutting edge in sub
welt and inseam.
stantial shearing engagement with said contiguous por~
and will operate in the same manner as the gage em
FIG. 7 shows the invention embodied in an inseam
trimmer of the type resembling the well-known Goodyear
machinev In this type of machine the shoe is fed by the
tion of the concave surface.
5. A machine for trimming surplus extensions of ma
terial for partially fabricated shoes having, in combin
cooperative action ofa feed wheel and a welt crease guide 25 ation, a shearing wheel engageable with the shoe adja~
supplemented by a rib guide. It will be seen in FIG. 7
cent the surplus extension with said surplus extension
that the shearing wheel 24a engages the sole attaching
projecting
inwardly of the circumferential periphery of
surface of the welt which is pressed upwardly against it
the wheel, an interior annular depression formed in the
by a conventional yieldable welt crease guide 74. A rib
guide 76 may also optionally be employed in its conven
tional manner. The only difference between the machines
in FIGS. 6 and 7 is that the shearing wheel of the FIG. 7
machine engages the exterior or outboard portion of the
wheel concentric with the axis of rotation and having
an annular surface extending substantially to said pe
riphery and forming therewith a circular edge, a curved
trimming knife, a cutting edge on the knife formed at
an oblique angle with the plane containing said circular
shoe, i.e. welt and inseam, and the oscillating knife 12
edge, and means for oscillating the knife about a center
is located more or less above the interior of the shoe, i.e., 35 spaced from said wheel and with said cutting edge ex
above the insole 54.
The operation of the shearing
members is identical with those illustrated in FIGS. 1
tending transversely of said plane.
6. A machine for trimming ‘surplus extensions of ma
and 6.
terial from partially fabricated shoes having, in com
Having thus described my invention, what I claim as
bination, a substantially frusto-conical shearing wheel,
new and desire to secure by Letters Patent of the United 40 the major periphery of said wheel being engageable with
States is:
the shoe adjacent the surplus extension with said sur
1. A machine for trimming surplus extensions of
material from partially fabricated shoes having, in com
bination, a shearing wheel having an annular blade por
tion comprising inner and outer surfaces tapering to a
circular edge engageable with the surplus extension adja
cent its intersection with the shoe, a trimming knife hav~
ing a diagonal cutting edge at one end, and means for
reciprocating the knife in substantial shearing engage~
ment with the inner surface of the annular blade portion
of the wheel.
2. A machine for trimming surplus extensions of ma
terial from partially fabricated shoes having, in com
bination, a shearing Wheel having an annular blade por
tion comprising inner and outer surfaces tapering to
a circular edge engageable with the surplus extension
adjacent its intersection with the shoe, a trimming knife
having a diagonal cutting edge at one end, and means
for reciprocating the knife with at least a portion of the
plus extension projecting inwardly of said periphery, an
interior annular depression formed in the Wheel con
centric with the axis of rotation and having an annular
surface extending substantially to said periphery, a trim
ming knife having a surface complementary to the trans
verse section of the annular surface extending to the
periphery and forming therewith, a circular edge, a cut
ting edge adjacent one end of the knife intersecting the
complementary surface and forming an oblique angle
with the plane containing said circular edge, and means
for reciprocating the knife with at least a portion of
the cutting edge of the knife at all times within the con
cave depression of the wheel and in substantial shearing
engagement With said annular surface extending to the
periphery.
7. A machine for trimming surplus extensions of ma~
terial from partially fabricated shoes having, in combi
nation, a shearing wheel engageable with the shoe ad
diagonal cuttingedge at all times extending transversely 60 jacent the surplus extension with said surplus extension
of the plane containing said circular edge and in substan
projecting inwardly of the circumferential periphery of
tial shearing engagement with the inner surface of the
the Wheel, an interior depression formed in the wheel
annular blade portion of the wheel.
concentric with the axis of rotation and having an annu
3. A machine for trimming surplus extensions of ma—
lar surface extending substantially to said periphery, a
terial from partially fabricated shoes having, in com 65 trimming knife having a convex surface complementary
bination, a shearing wheel engageable with the shoe
to the transverse section of said annular surface, a cut
adjacent the surplus extension with said surplus exten
ting edge adjacent one end of the knife intersecting the
sion projecting inwardly of the circumferential periph
convex surface, means for reciprocating the knife with
ery of the wheel, an interior annular depression formed
at least a portion of the cutting edge of the knife at
in the wheel concentric with the axis of rotation and
all times within the concave depression of the wheel and
having an annular surface extending substantially to said
in substantial shearing engagement with said annular sur
periphery, a trimming knife having a surface comple
face extending to said periphery, and a gage spaced later
mentary to the transverse section of the annular surface
ally from said Wheel an amount at least equal to the
extending to the periphery, a cutting edge adjacent one
thickness of the surplus extension thereby to provide a
end of the knife intersecting the complementary sur~
support for said surplus extension.
3,069,705
7
8. A machine for trimming surplus extensions of ma
terial from partially fabricated shoes having, in combi
nation, a shearing wheel engageable with the shoe ad
jacent the surplus extension with said surplus extension
projecting inwardly of the circumferential periphery of
the wheel, an interior depression formed in the Wheel
8
lating the knife about a center spaced from the wheel
with at least a portion of the cutting edge of the knife at
all times within the depression of the wheel and in sub
stantial shearing engagement with said annular surface
extending to the periphery, and a gage spaced later
concentric with the axis of rotation and having an annu
ally from said Wheel an amount su?icient thereby to pro
vide a support [or the surplus extension, said gage having
lar surface extending substantially to its periphery, a trim
ming knife having a convex surface complementary to
knife.
the transverse section of said annular surface, a cutting l0
edge adjacent one end of the knife, means for oscil
a bifurcated lower end extending on both sides of said
No references cited.
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