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Патент USA US2134809

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NW1, 193s,
¢_ ¢. BELL
2,134,809
SKIVING MACHINE
‘
Filed Dec: 1'7, 1937
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Nov, 1, 1938.
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2,134,809
SKIVING MACHINE
Filed Dec. 17, 1937
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2,134,809
Patented Nov. 1, 1938
UNITED STATES PATENT OFFICE
2,12L4.,809
SKIVING MACHINE
Charles C‘. Bell, Marblehead, Mass, assignor to
United Shoe Machinery Corporation, Pater
son, N. J., a corporation of New Jersey
Application December 17, 1937, Serial No. 180,414
10 Claims. (Cl. 69-16)
This invention relates to skiving machines and
is herein illustrated as embodied in a machine
of the Amazeen type for skiving the edges of
‘ pieces of upper leather.
In the manufacture of certain kinds of shoes
it is desirable to produce on a single part of an
upper two or more scarfs which differ in width
or in character or in both. For example, it may
feed roll and aids in feeding the work. The
feed roll shaft is rotatable in a block 15 which
is adjustable horizontally on a support W, said
support being angularly adjustable in a curved
guide member t8 the center of curvature of which _5
lies in a horizontal axis which passes through an
element on the upper surface of the feed roll.
It will be noted that by adjusting the block l5
to the right or left, the position of this horizontal
of a quarter a shoulder or fold scarf, to produce axis with respect to the feed roll may be changed. 10
along the bottom a feather edge or underlap The block l5 carries a superstructure by which
scarf and to produce along the back a seam the feed disk is carried so that angular adjustment
scarf. in such and similar cases it is desirable of the feed roll support El adjusts the feed disk.
that the operator be able instantly to change the The feed disk and feed roll thus preserve at all
The curved l5
relative positions of the work-engaging parts of times their relative positions.
‘the machine so as to produce the desired scarf. guide member in which the feed roll support is
A machine capable of being operated in this adjusted is located at the outer end of a large
be necessary to produce along the top and front
W.
manner is disclosed in United States Letters Pat
ent No. Z,O¢l1,'l01, granted May 26, 1936, upon an
E: application filed in the name of Milton H. Roske,
the present invention being an improvement
upon machines of this general type.
Referring to the accompanying drawings:
Fig. 1 is a front elevation of the machine in
25 which the present invention is embodied;
Fig. 2 is a section on the line II of Fig. 1
showing more particularly the presser and edge
guide and the manner
in which they are
mounted;
30 ‘ Fig. 3 is a detail in elevation showing one of
the positions of the work-engaging parts, the
plane of the out of the knife being indicated by
a broken line;
Fig. 4 is a section of a piece of work showing
the shoulder scarf which is produced when the
work-engaging parts are in the positions shown
in Fig. 3;
Fig. 5 is an elevation after the manner of Fig.
3 showing the work-engaging parts in the posi
40 tions occupied after a treadle has been manipu
lated to adjust the feed roll angularly and to ad
just the presser and edge guide to the left; and
Fig. 6 is a section of a piece of work showing
the seam scarf which is produced when the work
engaging parts are in the positions shown in
Fig. 5.
The illustrated machine is similar in many re
spects to the machine disclosed in the patent
which has been identi?ed above. The present
machine, like that of the patent, comprises a
rotary disk knife '9, a rotary feed roll H and
a rotary feed disk I3. The knife is manually
adjustable substantially vertically toward and
from the feed roll. The feed disk presses a por
55 tion of the work against a reduced end of the
arm I9, said arm being adjustable in a horizontal
path about the axis of a vertical stud 2| to ad
just the .feed roll toward and from the knife;
and the feed roll shaft is connected by a tele
scoping shaft 23 and a universal joint with a
driving pulley 25. The feed roll support I1 is
connected by a link 2'! with a treadle controlled
arm 29 pivoted at 3| to the base of the machine
and carrying a small block 33. Two small ad
justing nuts 35 threaded on a small rod 31 limit
the rocking movement of the arm 29 and hence
the extent of angular adjustment of the feed
roll support ll. The arm 29 is connected by a
link 3t] and a pivot 32 with the upper end of
a treadle rod 39 in such manner that vertical
movement of the rod swings the arm to the
right or left. The lower end of the rod is con
nected to a treadle M normally held in raised
position by a spring 110 to hold the feed roll II
in its up position in which the uppermost ele
20
25
30
35
ment of its periphery is parallel to the plane of
the knife or substantially so.
With the parts
in the positions shown in Figs. 1, 2 and 3, a cer- 40
tain kind of scarf will be produced, and when
the treadle 41 is depressed to swing the roll in
a counterclockwise direction until the small block
33 encounters the right-hand stop 35, a different
kind of scarf will be produced, the presser 41 .45
and edge guide lit being automatically adjusted
horizontally when the angular position of the
feed roll is changed. A second treadle, 49, pro
vides means for adjusting the presser and edge
guide horizontally independently of the treadle 50
M, to produce a third kind of scarf.
The sup
port ll, the block l5 and the various parts of
the superstructure which are rigid with the block
form an angularly adjustable carrier for the feed
roll and for the presser and edge guide. The 55
2
2,134,809
machine as thus far described operates in gen
eral as does the patented machine, but the
mounting of the presser and edge guide, the
mechanism whereby angular adjustment of the
feed roll adjusts the presser and guide horizon
tally and the connection from the treadle 49 to
the guide are different. Moreover, the treadles
are manipulated in a different manner to produce
the desired scarfs.
10
The stem 45 of the edge guide 43, which car
ries the yieldingly mounted presser 41, is slidable
in a path parallel to the axis of the feed roll in a
dovetailed guideway, not shown, formed in a part
of a bracket 5| which is rigid with the block l5.
15 A gib along one Wall of this guideway is indicated
at 53 (Fig. 2), and one of the screws for adjust
ing the gib transversely of the guideway is indi
cated at 55 (Fig. 1). A coiled compression spring
55 (Fig. 2), which bears with one end against one
20 end of the stem 45 and with the other end against
a part of the bracket 5| urges the edge guide at
all times to move toward the feed disk. A flexible
wire 51 provides means for moving the edge guide
at any time to the right, said wire being fastened
at one end in a socket in the stem 45 by a screw
59 and at the other end to the treadle 49, and be
ing encased in a ?exible conduit 6|. In order to
limit the extent of possible movement of the edge
guide to the right and left, two adjustable stops
30 are provided in the form of screws 63, 65 which
are threaded through split bosses on a plate 61
and are held in adjusted position by two pinch
screws 69, 1|, the plate 61 being fastened to the
bracket 5| by four screws 13. Driven into the
stem 45 and extending through alined horizontal
slots in the bracket 5| and the plate 61 is an abut
ment in the form of a pin 15 which extends out
through the slots into the space between the stop
screws 63, 85, said pin being capable of moving
40 to the right or left into positions determined by
the positions of the screws. The pin contacts at
times with the right-hand stop screw 65 but not
with the left-hand stop screw 63 since the upper
end of a lever 11, pivoted about the stem of a screw
19 which is threaded into the bracket 5|, extends
up between the pin 15 and the stop screw 63. If
the upper end of the lever is free to swing to the
left and the edge guide is moved to the left, the
movement of the pin 15 will be arrested when the
lever 11 encounters the stop screw 63. In the po
sitions of parts shown, however, the upper end of
the lever is not free to swing to the left but is being
held to the right. It is so held by the action of a
stationary cam 8| fastened to the guide member
55 I8 by screws 83, said cam having an inclined face
which is in engagement with the rounded head of
a screw 85 threaded up through the lower bent
end of the lever 11 and held in adjusted position
by a check nut 81.
60
When the work-engaging parts are in the posi
tions shown in Figs. 1, 2 and 3, with the upper
element of the roll | | substantially parallel to the
plane of the knife 9 and the lever 11 holding the
presser and edge guide somewhat to the right.
against the force of the spring 55, the compara
tively narrow shoulder scarf shown in Fig. 4 will
be produced. If now the treadle 4| is depressed
the feed roll I land the bracket 5| will be swung
counterclockwise about the horizontal axis indi
70 cated by the point :1: (Figs. 3, 4) , and the head of
the screw 85 will ride down and off from the sta
tionary cam 8|, whereupon the work-engaging
parts will assume the positions shown in Fig. 5
with the upper element of the roll II at a consid
76 erable angle to the plane of the knife 9 and with
the presser and edge guide at the extreme left
hand limit of their movement, as determined by
the position of the stop screw 63. In this case
the lever is free to swing, and its upper end is
pushed against the stop screw 63 by the spring
55 acting through the pin 15. With the parts in
these positions a seam scarf, as shown in Fig. 6,
will be produced. If now the treadle 49 is de
pressed to pull the edge guide to its extreme right~
hand position as determined by the stop screw 10
65, a feather edge scarf which is wider than the
shoulder scarf of Fig. 4 will be produced. If both
treadles are now released, the roll carrier and its
associated parts will swing clockwise, the head
of the screw 85 will ride up‘ the inclined face of
the cam 8|, and the parts will again assume the
positions shown in Fig. 3. It should be noted that
when the feed roll swings from the position shown
in Fig. 5 and that shown in Fig. 3, the lever 77 is
swung clockwise a predetermined distance and 20
pushes the edge guide to the right against the
force of the spring 55, and that the extent of this
swinging movement, and hence the horizontal po
sition of the edge guide, when the roll is in the
position shown in Fig. 3, may be varied by ad
justing the screw 85 in the lever 11. With the
parts in. the positions shown in Figs. 1, 2 and 3 the
narrow shoulder scarf of Fig. 4 will be produced,
as has been stated above. If now the treadle 49
is depressed a wider shoulder scarf will result. If
with the treadle 49 still depressed the treadle 4|
is depressed, a wide feather edge scarf will be pro
duced; and if with the treadle 4| still depressed
the treadle 49 is released, the seam scarf of Fig. 6
will be produced. It is thus possible to adjust the
machine instantly so as to produce any one of
the scarfs described above; and by adjusting the
block |5 horizontally so as to change the location.
of the axis :1; with respect to the roll, the forms of
these scarfs may be somewhat changed.
40
Having thus described my invention, what I
claim as new and desire to secure by Letters Pat
ent of the United States is:
I. A skiving machine having, in combination, a
knife member, a feed roll member, an edge guide
movable longitudinally of the feed roll member to
vary the width of the scarf produced, a carrier for
one of said members angularly adjustable to vary
the inclination of the scarf produced, and means
for moving the edge guide, said means comprising .
a lever pivoted to the carrier and means re-‘
sponsive to angular movement of the carrier for
swinging the lever about its pivot.
2. A skiving machine having, in combination, a
knife, a feed roll, an edge guide, a carrier for the . ;
roll and edge guide angularly adjustable to vary
the inclination of the scarf produced, the edge
guide being mounted on the carrier for adjust
ment longitudinally of the roll to vary the width
of the scarf produced, and means operated by an 60
gular adjustment of the carrier for adjusting the
edge guide with respect to the carrier, said means
including a lever pivoted on the carrier, and a
member adapted, when the carrier is at one limit .
of its angular movement, to hold the lever in a
given position and, when the carrier is at the
other limit of its angular movement, to permit
the lever to swing about its pivot.
3. A skiving machine having, in combination,
a knife, a feed roll, an edge guide, a carrier for
the roll and edge guide angularly adjustable to
vary the inclination of the scarf produced, the
edge guide being mounted on the carrier for
sliding adjustment longitudinally of the roll to
vary the width of the scarf produced, and means
2,134,809
operated by angular adjustment of the carrier
for sliding the edge guide along the carrier, said
means including a lever pivoted on the carrier
and adapted when swung about its pivot to ad
just the edge guide, and a member adapted when
the carrier is at one limit of its angular move
ment to hold the lever in a given position and
when the carrier is at the other limit of its an
gular movement to permit the lever to swing
10 about its pivot.
4. A skiving machine having, in combination,
a knife, a feed r011, an edge guide, a carrier for
the roll and edge guide angularly adjustable to
vary the inclination of the scarf produced,
15 edge guide being mounted on the carrier
adjustment longitudinally of the roll to vary
width of the scarf, and means operated by
the
for
the
an
gular adjustment of the carrier for adjusting
the edge guide with respect to the carrier, said
20 means including an abutment carried by the edge
guide, two stops between which lies the path of
movement of the abutment, a lever pivoted to
the carrier, said lever extending into the path
of movement of the abutment, and a stationary
25 member adapted, when the carrier is adjusted
angularly in one direction, to engage the lever
and swing it about its pivot.
5. A skiving machine having, in combination,
3
vary the inclination of the scarf produced, the
edge guide being mounted on the carrier for
adjustment longitudinally of the roll to vary
the width of the scarf, and means operated by
angular adjustment of the carrier for adjusting
the edge guide with respect to the carrier, said
means including a spring tending to move the
edge guide in one direction, and a lever pivoted
to the carrier and operated by angular adjust
ment of the carrier to move the edge guide in 10
opposition to the spring.
8. A skiving machine having, in combination,
a knife, a feed roll, an edge guide, a carrier for
the roll and edge guide angularly adjustable into
two positions to vary the inclination of the scarf 15
produced, the edge guide being mounted on the
carrier for adjustment longitudinally of the roll
to vary the width of the scarf, and means op
erated by angular adjustment of the carrier for
adjusting the edge guide, said means being con 20
structed and arranged to cause the production of
a shoulder scarf upon adjustment of the carrier
into one of its angular positions and to cause
the production of a seam scarf upon adjustment
of the carrier into its other angular position.
25
9. A skiving machine having, in combination,
a knife, a feed roll, an edge guide, a carrier
to vary the inclination of the scarf produced, the
edge guide being mounted on the carrier for
adjustment longitudinally of the roll to vary the
width of the scarf, and means operated by an
for the roll and edge guide angularly adjustable
to vary the inclination of the scarf produced,
the edge guide being mounted on the carrier 30
for adjustment longitudinally of the roll to vary
the width of the scarf, and means operated by
angular adjustment of the carrier for adjusting
the edge guide with respect to the carrier, said
35 gular adjustment of the carrier for adjusting
means including a treadle manipulation of which 35
the edge guide with respect to the carrier, said
adjusts the roll and edge guide either into posi
means including an abutment carried by the edge
tions to cause the production of a shoulder scarf
or into positions to cause the production of a
seam scarf, and a second treadle manipulation
of which, when the roll and edge guide are in 40
a knife, a feed roll, an edge guide, a carrier
30 for the roll and edge guide angularly adjustable
guide, two stops between which lies the path
of movement of the abutment, a lever pivoted
to the carrier, said lever extending into the path
of movement of the abutment, and a stationary
member adapted, when the carrier is adjusted
the last-named positions, adjusts the edge guide
to cause the production of a feather edge scarf.
10. A skiving machine having, in combination,
a knife, a feed disk, a feed roll, an edge guide,
a carrier for the disk, roll and edge guide angu 45
angularly in one direction, to engage the lever
and swing it about its pivot and, when the car
rier is adjusted angularly in the opposite direc
45
' larly adjustable to vary the inclination of the
tion, to free the lever.
6. A'skiving machine having, in combination,
a knife, a feed roll, an edge guide, a carrier for
the roll and edge guide angularly adjustable to
vary the inclination of the scarf produced,
edge guide being mounted on the carrier
adjustment longitudinally of the roll to vary
width of the scarf, and means operated by
the
for
the
an
gular adjustment of the carrier for adjusting the
edge guide with respect to the carrier, said means
55 including a spring tending to move the edge
guide in one direction, and a lever operated by
angular adjustment of the carrier to move the
60
edge guide in opposition to the spring.
7. A skiving machine having, in combination,
a knife, a feed roll, an edge guide, a carrier for
the roll and edge guide angularly adjustable to
scarf produced, the edge guide being mounted
on the carrier for adjustment longitudinally of
the roll to vary the width of the scarf, and
means operated by angular adjustment of the 50
carrier for adjusting the edge guide with respect
to the carrier, said means including a spring
tending to move the edge guide toward the feed
disk, a lever operated by angular adjustment of
the carrier to move the edge guide a given dis
tance away from the feed disk, and operator con
trolled means capable of being manipulated ir
respective of the angular position of the carrier
for moving the edge guide still farther away
from the feed disk.
CHARLES C. BELL.
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