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Патент USA US3064606

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Nov. 20, 1962
L. c;ì MILLER
3,064,596
WELT ATTACHING MACHINES
Filed June 7, 1661
5 Sheets-Sheet l
F191
NOV' 20, 1962
l.. G. MILLER
3,064,596
WELT ATTACHING MACHINES
Filed June 7, 1961
5 {Sëeets-Sheet 2
O
J6
Fly. 5
Q
NOV- 20, 1962
L. G. MILLER
3,054,596
WELT ATTACHING MACHINES
Filed June 7, 1961
5 Sheets-Sheet 3
Nov. 20, 1962
L. G, MILLER
3,064,596
WELT ATTACHING MACHINES
Filed June 7, 1961
,
5 Sheets-Sheet 4
Nov. 20, 1962
l.. G. MILLER
3,064,596
WELT ATTACHING MACHINES
Filed June '7. 1961
5 Sheets-Sheet 5
F19. 12
tice
3,054,596
Patented Nov. 20, 1952
2
1
head of a machine embodying the features of the in
3,664,596
WELT ATTACHENG MACHINES
Lloyd G. Miller, Beverly, Mass., assignor to United Shoe
Machinery Corporation, Flemington, NJ., a corpora
tion of New Jersey
Filed June 7, 1961, Ser. No. 115,493
7 Claims. -(Cl. Ilz-_46)
vention;
FIG. .2 is an enlarged view in side elevation of the
operating head of the machine illustrating the mech
anism for applying conductive material to the shoe;
FIG. 3 is a view of the mechanism of =FIG. 2 as seen
from .the right;
yFÍG. 4 is a view of the mechanism of FIG. 2 seen
partially lowered into position to apply the conductive
This invention relates generally to machines for yat
taching Welts to lasted shoe uppers and sole members, 10 material to the shoe;
FIG. 5 is a view of the mechanism of FIG. 4 seen
and has particular reference to a machine of this type
from the right side;
which has novel means for actuating a welt severing
PEG. 6 is a view of the mechanism of PIG. 4 in the
knife.
fully lowered position at `the end of the conductive ma
The invention is illustrated herein as Ibeing applied to
a Goodyear welt and inseam sewing machine similar 15 terial applying stroke;
iFiG. 7 is a View of the mechanism of FIG. 6 as seen
to that disclosed in United States Letters Patent No. l,
971,575, granted August 28, 1934 and No. 2,041,945,
granted May 26, 1936 upon applications of Alfred R.
from the right side;
FIG, 8 is a perspective view of the contact mechanism
for detecting the conductive material applied to the shoe;
Morrill, and in certain respects embodies an improve
FÍG. 9 is `an enlarged View partly in section of the
ment over the automatic welt severing mechanism dis 20
dispenser for- applying the conductive material;
closed in United States Letters Patent No. 2,900,933,
PEG. 10 is a plan view of a shoe in position for start
issued August 25, 1959 to l. i). Carter. These patents
ing the operation of attaching a welt around the fore
and Patent No. 1,774,498 issued September 2, 1930 -to
-part from the heel breast line after the line of conductive
Fred Ashworth et al. should be referred to for a de
scription of certain parts of the machine which are 25 material has been applied with certain portions of the
mechanism omitted for clarity;
associated with the mechanism embodying the invention
IFIG. l1 is a view similar to FIG. 10 illustrating the
to be described hereinafter. In the machine of the above
shoe as it approaches the end of the attaching opera
identiñed Carter patent, the welt severing knife is actu
tion, when the contact mechanism has reached the line
ated, in the case of a sewed heel seat shoe lby a feeler
positioned to engage the leading end of the Welt ñrst 30 of conductive material; and
FIG. 12 is a schematic view of the machine controlling
attached to the shoe, as the attaching operations near
mechanism and their associated electrical circuits.
completion. In the attachment of a welt to a so-called
Referring to the drawings, there is illustrated a Welt
breast-to-breast work, in which the welt is attached to
attaching machine 10 which is adapted to attach a welt
only the forepart of the shoe, terminating- on each side
at a breast, the heel breast line, there is no welt end 35 12 to the periphery of a partially fabricated shoe 14.
The machine 1i? comprises an operating head ‘i6 sup
in position to actuate the feeler, hence means is pro
ported on -a pedestal i8 with an operator controlled foot
vided under the direct control of the operator for actu
treadle 2i? for actuating the machine starting mechanism
ating the welt severing mechanism.
to be described hereinafter. The operating head 16 is
Because of the accurate timing required in judging
when to actuate the Welt cutting mechanism in the breast 40 similar to that described in the above-identified patents
and has the usual Welt attaching mechanism comprising
to-breast type of work, the operator of the machine must
ya. stitch forming mechanism 17, welt feeding mechanism
have considerable training to become proficient in'its
19 and welt guiding devices 2.1, a welt severing knife 22
proper operation. An error in judgment will result in va
and a solenoid L1 for actuating the knife, said solenoid
defective shoe in which time consuming and expensive
45 being energized in a manner t0 appear hereinafter. As
repair work is required.
further described in the above-identified patents, the
An object of this invention is to provide a machine
operation
of the welt attaching mechanism of the ma
of the type described in which means is provided for
chine is controlled by a lock bolt 24 adapted to move
automatically actuating the welt severing mechanism in
into and out of engagement with an oscillating lever 26
the attachment of a welt in breast-to-breast work.
which
controls a clutch mechanism (not shown). The
50
A further object of this invention is to provide a
foot treadle Ztl actuates the lock bolt 24 through a suit
machine of the type described having -means for applying
able linkage 28, which includes an operating rod 30, in
actuating means -to the appropriate position in the yshoe
such a manner that downward motion of the treadle
>and means responsive to contact with said actuating
causes upward movement of the operating rod 30, mov
means for energizing the welt severing mechanism.
ing the lock bolt 24 out of engagement with the lever
A further object of this invention is to provide means
26 to start the operation of `the machine. When the
for applying a conductive material to a predetermined
trcadle is released, the resulting downward movement of
position on the shoe to co-operate with means positioned
the operating rod moves the lock bolt back into engage
for electrical contact with said conductive material -to
ment with the lever 26, stopping the machine.
actuate the welt severing mechanism.
To provide an auxiliary machine stopping means re
60
Other objects of the invention will be apparent to one
sponsive to the actuation of the Welt cut-off knife, in a
skilled in the art from vthe -’following detailed description
manner to appear hereinafter, a toggle 32 is interposed
in the mechanical linkage between the treadle 2d and the
of a specific embodiment thereof.
operating rod 3d. The armature 34 of a machine stop
In lthe drawings,
FIG. 1 is a view in front elevation of the operating 65 solenoid L-Z is connected to the knee of the toggle 32
3,064,596
through a suitable linkage 36, so that on energization of
the solenoid LfZ, the toggle is broken to draw the oper
of the welt in the opposite side of the shoe (see FIG. ll).
In the particular embodiment illustrated, the conduc
ating rod 36 downwardly and thereby stop the machine
without the necessity of releasing the treadle.
tive material applied to the shoe to form the knife actu
ating line 64 may Ibe. an electrolyte, such as a solution
of salt water, or may ‘be a liquid containing dispersed
conductive particles, such as graphite or carbon black.
-Energization of machine stop solenoid L-Z may con
veniently be accomplished by providing a cam 38 on the
knife 22 so that on a cutting stroke of the knife, the cam
In some cases a graphite stick or pencil may be used in
3S closes momentarily a switch S-1, thereby energizing
relay R-l. The energization of relay Rdl closes a first
‘place of the liquid dispenser. It has also been foundrthat
pair of contacts C1 and C2, which complete a holding
circuit to relay R-l, and also closes a second pair of con
tap water may be used as the conductive material.
with a control device of sufficient sensitivity, ordinary
'
C6 of timing relay TR-Z close, thereby energizing the
machine stopping solenoid L-2.
TheV knife actuating solenoid L-l is energized when
switch S-2 is closed by a relay R-3 which is energized
Although the illustrated embodiment of the invention
is particularly adapted for use in the attachment of a welt
to a Goodyear welt shoe in which the welt is attached
about the yforepart forward of the heel breast line, it will
be apparent that the principles of the invention may also
be adapted for use with so-called sewed seat work, in
which the welt is attached about the entire periphery
by an amplifying control device A-l, such as a thyratron
of the shoe.
tacts C3 and C4, which complete a ciruit to timing relay
TR-Z After a predetermined time, the contacts C5 and
switch, high impedance relay or the like, which is actu
ated in the following manner.
An actuating circuit from A-1 passes through a control
block 40 which comprises a support portion 42 for attach
ment to the machine frame, an abutment 44 projecting
-
,
It is also apparent that the principles of the invention
20 may be adapted for use with other types of shoe-making
operations.
therefrom for bearing against the bottom of the shoe, and
Since certain other obvious changes may be made in
the device without departing :from the scope of the inven
tion, it is intended that all matter contained herein be
a spring arm 46 secured to the support portion 42 and
interpreted in an illustrative and not in a limiting sense.
separated therefrom by insulating shims 48. The end of
Having thus described my invention, what I claim as
new and desire to secure by Letters Patent of the United
spring arm 46 is provided with a sliding contact 5t) which
is normally spaced laterally from and slightly below the
abutment 44. During the welt attaching operation, the
States is:
.
l. A mechanism for performing a predetermined
bottom of the shoe ybears against the abutment 44, and 30 operation on an article comprising means for performing
said operation, means for terminating said operation,
ñexes the spring arm 46 upwardly, so that as the shoe
moves laterally, the abutment 44 and the contact 50 slide
around the periphery of the shoe bottom.
means for applying a conductive material to a pre
'
determined area of said article, and means responsive to
contact with said conductive material lfor terminating
IIn the illustratedV embodiment of the invention, the
control device A-l is actuated by providing a conductive
said operation.
strip on the shoe »bottom in an appropriate position, so
2. A mechanism for attaching a length of material
from a continuous supply to an article, comprisingmeans
said conductive strip, a circuit is completed through the
for attaching said material to the article, means for
control block to the control device A-l, thereby ener 40 severing said material at the completion of said attach
that as the abutment 44 and the contact 50 slide across
gizing rrelay R-3.
ing operation, means responsive to the actuation of said`
One method of providing a suitable conductive strip
is illustrated in FIGS. 2 to 7 and 9. A receptacle 52
having a ball-type dispenser 54 at the lower end is
means for applying a conductive material to the article,
and means responsive to contact with said conductive
mounted on a lever 56 which is hinged at the upper end
to an arm 58 extending from an armature 60 of a sole
severing means for terminating the attaching operation,
45
material for actuating said severing means.
3. A mechanism for attaching a welt to the periphery
of a partially fabricated shoe, comprising weltV attach
ing means, primary means for starting and stopping said
operation, auxiliary means for stopping said operation,
noid L-3. The lever 56 is limited in its -downward move
ment in relation to the arm 58 by a stop 62 depending
from the arm. As illustrated in FIGS. 4 and 5, down
ward movement of the armature 60, in response to ener 50 means for applying a conductive material to a prede
termined area of said shoe, and means responsive t0 con
gization of solenoid L-S causes the dispenser ball 54 to
tact with said conductive material for energizing said
contact the bottom surface of the shoe at a point spaced
auxiliary means.
inwardly from the periphery, and as further downward
4. A mechanism for attaching a welt to the periphery
movement of the armature causes the lever 56 to swing
upwardly in relation to the arm 58 (see FIGS. 6 and 7), 55 of a partially fabricated shoe, comprising welt attach
ing means, operator controlled means for starting and
so that the ball 54 rolls on the «bottom of the shoe toward
stopping -said welt attaching means, auxiliary means for
the outer periphery, leaving a transverse line 64 of con
stopping said welt attaching means independentlyV of
ductive material. The solenoid L-3 may conveniently be
the operator controlled means, welt cutting means, means
energized for the required time through a timing relay
'IR-3 Vby a switch S-4 which is closed by the treadle at 60 responsive to the actuation of said welt cutting means for
energizing said auxiliary stopping means, means for
"the start of an attaching operation.
applying a conductive material to the shoe, and -means
In the illustrated embodiment, the dispenser is posi
responsive to contact with said conductive mterial for
tioned for use in the -manufacture of Goodyear welt shoes,
actuating said welt cutting means.
in which the welt is to lbe attached around the forepart
5. A mechanism for attaching a welt to a peripheral
only of the shoe, terminating on each side at aboutthe 65
portion of a partially fabricated shoe, comprising welt
heel breast line. In such an operation, the conductive
attaching means, means for applying a conductive mate
line may be applied to the shoe bottom at the beginning
rial to a portion of the shoe bottom generally ahead of
of the attaching operation on the side opposite the side
and in the path of the attaching operation, and means
first presented to the machine >(see FIG. 10). The ball
54 mounted to position the line 64 in predetermined rela 70 responsive to contact with said conductive material for
tion to the control block and welt cut-off knife so that
when the control =block contacts pass over the conductive I
terminating said attaching operation.
line 64 as the attaching operation nears completion, the
cut-off knife is actuated to cut the welt at a point in
portion of a partially fabricated shoe, comprising'welt
6. A mechanism for attaching a welt to a peripheral
attaching means, means for rapplying a conductive mate
transverse alignment with the previously attached end 75 rial to the shoe generally in the path of the attaching
3,064,596
6
thereof opposite the side ñrst presented t0 the attach
ing mechanism, and ‘means responsive to the completion
operation, and a pair of contacts disposed ahead of the
Welt attaching means, said contacts being positioned to
bear against the shoe during at rleast the latter portion
of the attaching operation, and ymeans responsive to the
of an electric circuit between the contacts for stopping
the attaching mechanism.
completion of an electric circuit between said contact
means through said conductive material for stopping said
References Cited in the ñle of this patent
UNITED STATES PATENTS
attaching operation.
7. A mechanism for attaching a welt to a partially
fabricated shoe about the forepart generally forward of
the heel breast line, comprising a welt attaching mech
anism, a pair of contacts adjacent thereto positioned to
bear against the shoe during the attaching operation,
means for applying a conductive stripe to the shoe bot
tom in the general path of the attachment in the side
10
1,592,115
2,908,237
Lindgren ____________ __ July 13, 1926
Winberg ____________ __ Oct. 13, 1959
1,170,842
France ______________ __ Nov. 30, 1959
FOREIGN PATENTS
(1st addition to No. 72,760)
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