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Патент USA US3057126

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Oct. 9, 1962
w. BUCHI ETAL
3,057,121
SHOE-SCOURING MACHINE
Filed April 5, 1961
Fig.1
2 Sheets-Sheet 1
BZ-FZT'ww/W Flg. 2
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/T——331.3
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17 Fig.8
INVENTORS
BY WM‘ ‘Wm WM
Oct. 9, 1962
w. BUCHI ETA].
3,057,121
SHOE-SCOURING MACHINE
Filed April 5, 1961
2 Sheets-Sheet 2
7 /,
INVENTORS“
United States Patent 0
1
Fatented Get. 9, 1962
2
1
In order to mount the guide element according to the
invention without dii?culty on existing scouring machines,
the mounting plate may be provided with an annular
?ange in which a plurality of setscrews may be provided
at uniform distances from one another for securing the
$357,121
SHGE-SCGURENG MACHH‘JE
Walter liiichi, Niederlahnstein (Rhine), and Zacharias
lduschlc, Tnttlingeu, Germany; said Buschle assignor to
said Biichi
mounting plate to the peripheral surface of the bearing
Filed Apr. 5, 19-61, Ser. No. 1%,900
Claims priority, application Germany Apr. 20, 1960
block.
In some cases it may, however, be advisable to
provide a mounting bracket in place of a mounting plate.
The guide element may also be adjusted in the axial
The present invention relates to a shoe-scouring ma 10 direction relative to the scouring wheel by providing it
with a tubular extension which is telescopically slidable
chine of the type which comprises one or more scouring
on the mounting bolt and provided with a longitudinal
wheels, the peripheral grinding surfaces of which usually
slot through which a setscrew passes into the mounting
consist of sandpaper which is secured to a felt base and
bolt so as to permit the guide element to be clamped
may be of different grades of roughness. These scouring
wheels are used for grinding off or scouring the edges 15 thereto.
For adjusting the guide element in the radial direction,
of the heels and soles in several operating steps, that is,
it may also be provided with a radially extending pro—
by ?rst scouring them off roughly and by then dressing
jection which is preferably of a dovetailed shape and
them to a smooth ?nish. By this procedure it is possible
slidable along a guide member of a corresponding shape
to eliminate the operation of smoothing the edges of the
7 Claims.
(‘3” 51-192)
heels by means of a hot iron.
20 mounted either on the hub or tubular extension of the
These scouring Operations require a considerable dex
terity of the operator, especially for working on shoes
guide member or on the mounting plate.
whose sole and heel edges project only slightly'beyond
the upper. At the slightest carelessness of the operator,
is disposed closely adjacent to the scouring wheel, the
of the sole or heel and the upper.
the guide element according to the invention;
For scouring machines in which the wall of the housing
means for adjusting the guide element in the radial direc
the ‘scouring wheel may touch the upper and thereby 25 tion relative to the scouring wheel may also consist of a
radially extending slide member which is secured to and
scuff or otherwise damage it. The average number of
carries the guide element and is slidable in a correspond
shoes which because of such carelessness have to be dis- ,
ing guide member which is secured to the side wall of
carded in ‘a shoe-manufacturing plant amounts from 8
the machine housing. This side wall and the guide mem
to 10%. The damaged shoes must then be sent to the
repair department and, even after being repaired as Well 30 ber thereon are provided with an elongated aperture
through which a setscrew passes from the outside into
as possible, they can only be sol-d at a considerably re
the slide member carrying the guide element, so that the
duced price since the damaged grain of the uppers will
latter may be easily adjusted from the outside of the
always remain visible to some extent to a discerning
machine.
customer.
The above-mentioned as well as further objects,
It is an object of the present invention to provide a 35
features, and advantages of the present invention will
shoe-scouring machine which overcomes the above-men
become more clearly apparent from the following detailed
tioned disadvantages and requires considerably less skill
description, particularly when the same is read with refer
and dexterity of the operator in order to produce perfect
ence to the accompanying drawing, in which:
ly ?nished sole and heel edges Without danger of damag
40
FIGURE 1 shows a perspective view of a scouring
ing the uppers.
machine of the usual construction which is provided with
According to the invention this object will be attained
by providing a suitable guide element directly adjacent
a guide element according to the invention;
FIGURE 2 shows a front view of a scouring wheel and
to the scouring wheel and intermediate the upper edges
This guide element is preferably of an arcuate shape 45
which has a curvature with a center disposed coaxially
with the scouring wheel, and it is mounted parallel to the
latter and adapted to be adjusted in both radial and axial
directions relative to the scouring wheel and to be secured
in a ?xed position.
For adjusting the guide element in the axial direction,
IV of FIGURE 3;
FIGURE 5 shows a side View of the mounting plate
of the guide element;
50
this element may be provided with a hub' slidable on
and adapted to be clamped to a mounting bolt, while for
adjusting the guide element in the radial direction, the
bolt carrying the guide element may be slidably adjustable
along a radially extending recess in a mounting plate
preferably mounted on the bearing block in which the
drive shaft of the scouring wheel is rotatably mounted.
The radial adjustability of the guide element is very im
portant since the surface of the guide element adjacent
FIGURE 3 shows a side view of the guide element;
FIGURE 4 shows a cross section taken along line IV—
FIGURE 6 shows a cross section taken along line VI—
VI of FIGURE 5;
FIGURE 7 shows a detail view of the mounting bolt
of the guide element;
FIGURE 8 shows a detail view of the nut for secur
55
to the scour-ing wheel may become worn and the periph
ing the mounting bolt to the mounting plate;
FIGURE 9 shows a side View of a guide element and
its mounting plate according to a modi?cation of the
invention;
FIGURE 10 shows a cross section taken along line
X——X of FIGURE 9;
FIGURE 11 shows a cross section taken along line
eral edge thereof may thereby be damaged, requiring it
to be reground which, in turn, requires it to be read
XI—XI of FIGURE 9;
justed.
cation of the guide element according to the invention;
By guiding the shoe in accordance with the invention, 65
the advantage will be ‘attained that the leather of the
upper will be fully protected from being scuffed or even
more seriously damaged by the scouring Wheel, and that
FIGURE 12 shows a cross section of a further modi?
FIGURE 13 shows a vertical section of a guide ele
ment according to still another modi?cation of the in
vention, secured to a side wall of the machine; while
FIGURE '14 shows a cross section taken along line
XIV—XIV of FIGURE 13.
easily that the length of time required for scouring a 70 In the drawing, FIGURE 1 illustrates a shoe scouring
the ‘operator of the machine may carry out his work so
pair of shoes will be reduced approximately to one-third
of the time previously required.
machine of the usual construction including a trough
shaped housing which is provided with suction means
3,057,121
4
and contains at least one scouring wheel, the wheel shaft
direction and is adapted to be secured in any adjusted
being mounted at one or both sides in bearing blocks
position by means of a nut 27 on a screw projecting from
or brackets and driven through a belt by an electric
guide element 45 and passing through a slot 26 in guide
motor in the bottom part of the housing.
member 25. Obviously, the slidable joint for the radial
adjustment of guide element 4b according to FIGURES
In order to
simplify the illustration, the drawing shows only one
9 to 11 may also be combined with a structure accord—
bearing block 1 at the right side for the drive shaft 2
ing to FIGURE 12 by being inserted between guide ele
of scouring wheel 3. This scouring wheel 3 is also of
ment 4 and the tubular part 20.
the usual type and its grinding surface preferably con
The further embodiment of the invention as illustrated
sists of a strip of sandpaper of the desired roughness which
is attached to a felt base. When scouring the sole and 1O in FIGURES l3 and 14 is especially adapted for use
on machines in which the housing wall 28 is disposed
heel edges of a shoe by means of such a scouring wheel,
closely adjacent to the scouring wheel 3. Guide element
the outcome of the work depends entirely upon the
4c is in this case provided with a dovetailed slide mem
dexterity and attentiveness of the operator’ The advent
ber 24" which is inserted into and slidable along a com
of modern shoes without projecting soles and heels also
plementarily recessed guide member 29 secured to the
brought a considerable increase in rejects and waste be
inside of housing wall 28. Guide member 29 and Wall
cause of damage to the uppers which becomes unavoid
28 are provided with corresponding slots 30 through
able at the least carelessness of the operator of a scour
ing machine.
which a setscrew 31 is screwed into slide member 24' so
In order to avoid such damage and to reduce the
time required for the scouring operation on a pair of
shoes, the invention provides directly adjacent to the
that the radial adjustment of guide element 4c may be
easily carried out from the outside of housing wall 28.
Guide elements 4, 4a, 4b, 40 may be made of steel or
scouring wheel 3 a guide element 4 which consists of an
arcuate member 5 of a curvature, having its center
on the axis of scouring wheel 3, and of a hub 6. The
base, which may be inexpensively produced by a mold
ing process.
of a suitable plastic, for example, one with a polyamide
Although our invention has been illustrated and de
outer peripheral edge 7 of guide element 4 is of a tongue
scribed with reference to the preferred embodiments
shaped cross section in order to enter easily into the
thereof, We wish to have it understood that it is in no way
small gap between the upper leather 33 and the peripheral
limited to the details of such embodiments but is capable
edge 32 of the sole or heel of the shoe.
of numerous modi?cations within the scope of the ap~
The length of the arcuate member 5 may, for example,
correspond to an angle of about 150° with reference to 30 pended claims.
Having thus fully disclosed our invention, we claim:
the radius 8 of scouring wheel 3. It may, however, also
be made considerably shorter since the work is carried
1. In a shoe-scouring machine, in combination, a sup
port, a shaft rotatably journaled in said support, an abra
out only along a very small part of the periphery of
the scouring wheel.
sive wheel ?xed to said shaft, mounting means spaced
Hub 6 of guide element 4 is secured by a setscrew 9 35 from said wheel and carried on said support with freedom
to a mounting bolt or rod 10 on which it may be ad
of at least limited angular adjustment about the axis of
justed in the axial direction in accordance with the de
said wheel, holding means secured to said mounting means
with freedom of limited adjustment in radial direction of
sired distance from scouring wheel 3. This distance
said wheel, a guide member supported on said holding
preferably amounts to approximately %0 mm.
Mounting bolt 10 is secured to a mounting plate 11 40 means, said guide member having a curved edge adja
cent the periphery of said wheel with a radius of curva
‘which has an annular flange 12 extending over the bear
tending aperture 14 through which passes the threaded
ture substantially equal to the wheel radius and a center
of curvature located substantially on said axis, ?rst fasten
ing means for immobilizing said holding means in a se
end 15 of bolt 10 screwed into a nut 17 consisting of
an oval plate, as shown particularly in FIGURE 8,
which engages into a recess 16. The elongated aper
lected radial position relative to said axis with said edge
projectng beyond the periphery of said wheel, and sec
ond fastening means for immobilizing said mounting
ture I4 permits bolt 10 and thus also guide element 4
means in a selected angular position.
2. In a shoe-scouring machine, in combination, a sup
ing block 1 and is secured thereto by means of four screws
13. Mounting plate 11 has an elongated, radially ex
to be adjusted in the vertical direction.
In order to
facilitate such an adjustment, bolt 10 is provided with
?at surfaces 18 to permit a wrench to be applied thereto.
The adjustment of guide element 4 in the direction
parallel to the peripheral surface of scouring wheel 3
may also be easily accomplished by turning the mounting
plate 11 together with mounting bolt 10 and guide ele
ment 4 slightly in one or the other direction relative
to hearing block 1.
A modi?cation of the means ‘for adjusting guide ele
ment 4 in the axial direction relative to the scouring
wheel is illustrated in FIGURE 12. In this embodiment,
the hub of guide element 4a is extended to form a tubular
part 20 which is telescopically slidable on and adapted
to be secured to mounting bolt 10a projecting from
mounting plate 11a. For this purpose, the tubular part
20 is provided with a longitudinal slot 21 through which
a setscrew 22 passes which is screwed into bolt 10a and,
when tightened, will clamp the tubular part 20 and guide
port, a substantially horizontal shaft rotatably journaled
in said support, an abrasive wheel ?xed to said shaft,
mounting means spaced from said wheel and carried on
said support with freedom of at least limited angular
adjustment about the axis of said Wheel, and above the
latter, holding means secured to said mounting means
with freedom of limited adjustment in radial direction
of said wheel, a guide member supported on said holding
means, said guide member having a curved edge adja
cent the upper periphery of said wheel with a radius of
curvature substantially equal to the wheel radius and a
center of curvature located substantially on said axis,
?rst fastening means for immobilizing said holding means
at a selected elevation relative to said axis with said edge
projecting above the periphery of said wheel, and second
fastening means for immobilizing said mounting means
in a selected angular position.
3. In a shoe-scouring machine, in combination, a sup
port, a shaft rotatably journaled in said support, an abra
sive wheel ?xed to said shaft, mounting means spaced
element 4a thereon in a ?xed position.
FIGURES 9 to 11 show another modi?cation of the 70
from said wheel and carried on said support with free
means for adjusting guide element 4b in the radial di
dom of at least limited angular adjustment about the axis
rection. Guide element 419 is in this case provided with
of said wheel, a rod projecting from said mounting means
a radially extending arm 23 with a ?at recess 24 engaged
toward said wheel in a direction substantially parallel to
by a guide member 25, of complementary cross-sectional
said shaft, the distance of said rod from said axis being
shape, which projects radially from mounting plate 11.
less than the radius of said wheel, holding means includ
Guide element 4b is thus slidably adjustable in the radial
3,057,121
5
ing said rod secured to said mounting means with free
dom of limited adjustment in radial direction of said
wheel, a segmental guide member supported on said hold
ing means, said guide member having a curved edge ad
jacent the periphery of said wheel with a radius of curva
ture substantially equal to the Wheel radius and a center
of curvature located substantially on said axis, ?rst fasten
6
sition, and third fastening means for immobilizing said
guide member on said rod in a selected axial position.
6. In a shoe-scouring machine, in combination, a sup
port, a shaft rotatably journaled in said support, an abra
sive Wheel ?xed to said shaft, mounting means spaced
from said wheel and carried on said support with freedom
of at least limited angular adjustment about the axis of
said wheel, a rod projecting from said mounting means
ing means for immobilizing said holding means in a se
toward said wheel in a direction substantially parallel to
lected radial position relative to said axis with said edge
projecting beyond the periphery of said wheel, and second 10 said shaft, the distance of said rod from said axis being
fastening means for immobilizing said mounting means
less than the radius of said wheel, said rod being se
in a selected angular position.
cured to said mounting means with freedom of limited
adjustment in radial direction of said wheel, a segmental
4. In a shoe-scouring machine, in combination, a sup
port, a shaft rotatably journaled in said support, an abra
guide member supported on said rod with freedom of
sive wheel ?xed to said shaft, mounting means spaced 15 axial adjustment longitudinally of said rod, said guide
member having a curved edge adjacent the periphery of
from said wheel and carried on said support with free
dom of at least limited angular adjustment about the axis
said wheel with a radius of curvature substantially equal
of said wheel, a rod projecting from said mounting means
to the wheel radius and a center of curvature located sub
toward said wheel in a direction substantially parallel to
stantially on said axis, ?rst fastening means for immobiliz
said shaft, said rod being secured to said mounting means 20 ing said rod in a selected radial position relative to said
with freedom of limited adjustment in radial direction of
axis with said edge projecting beyond the periphery of
said wheel, a guide member supported on said rod with
said wheel, second fastening means for immobilizing said
freedom of axial adjustment longitudinally of said rod,
mounting means in a selected angular position, and third
said guide member having a curved edge adjacent the
fastening means for immobilizing said guide member on
periphery of said wheel with a radius of curvature sub 25 said rod in a selected axial position.
stantially equal to the wheel radius and a center of curva
ture substantially equal to the wheel radius and a center
of curvature located substantially on said axis, ?rst fasten
ing means for immobilizing said rod in a selected radial
position to said axis with said edge projecting beyond the
periphery of said wheel, second fastening means for im
mobilizing said mounting means in a selected angular po
7. In a shoe-scouring machine, in combination, a sup
port, a substantially horizontal shaft rotatably journaled
in said support, an abrasive wheel ?xed to said shaft,
mounting means spaced from said wheel and carried on
said support with freedom of at least limited angular
adjustment about the axis of said wheel, a rod projecting
from said mounting means toward said wheel in a di
sition, and third fastening means for immobilizing said
rection substantially parallel to said shaft and above the
guide member on said rod in a selected axial position.
latter, the distance of said rod from said axis being less
5. In a shoe-scouring machine, in combination, a sup 35 than the radius of said wheel, said rod being secured to
port, a substantially horizontal shaft rotatably journaled
said mounting means with freedom of limited adjustment
in said support, an abrasive wheel ?xed to said shaft,
mounting means spaced from said wheel and carried on
said support with freedom of at least limited angular ad
justment about the axis of said wheel, a rod projecting
from said mounting means toward said wheel in a direc
in radial direction of said wheel, a segmental guide mem
ber supported on said rod with freedom of axial adjust
ment longitudinally of said rod, said guide member hav
ing a curved edge adjacent the upper periphery of said
wheel with a radius of curvature substantially equal to
tion substantially parallel to said shaft and above the
the wheel radius and a center of curvature located sub
latter, said rod being secured to said mounting means With
stantially ‘on said axis, ?rst fastening means for immobil
freedom of limited adjustment in radial direction of said
izing said rod at a selected elevation relative to said axis
wheel, a guide member supported on said rod with free 45 with said edge projecting above the periphery of said
dom of axial adjustment longitudinally of said rod, said
wheel, second fastening means for immobilizing said
guide member having a curved edge adjacent the upper
mounting means in a selected angular position, and third
periphery of said wheel with a radius of curvature sub
fastening means for immobilizing said guide member on
stantially equal to the wheel radius and a center of curva
said rod in a selected axial position.
ture located substantially on said axis, ?rst fastening 50
References Cited in the ?le of this patent
means for immobilizing said rod at a selected elevation
relative to said axis with said edge projecting above the
UNITED STATES PATENTS
periphery of said wheel, second fastening means for im
Nagle ______________ __ June 23, 1891
454,755
mobilizing said mounting means in a selected angular po
Capomacchio et a1 _____ __ Nov. 19, 1935
2,021,442
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