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Sept. 24, 1946.
B. JORGENSEN
2,408,022
MACHINE FOR SHAPING UPPERS OVER LAS'I‘S
Filed Sept. 12, 1945
6 Sheets-Sheet 1
30¢
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I,
[noen for
Bern/1 ar‘dl Jorg en sen
Sept. 24, 19%.
s. JORGENSEN
2,408,022
MACHINE FOR SHAPING UPPERS OVER LASTS
Filed Sept. 12, 1945
'
6 Sheets-Sheet 2
4
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In 0 en for
Ber-n/zardtJorgensen
By his After-n ei'
Sept. 24, 1946.
B. JORGENSEN
2,408,022 -
MACHINE FOR SHAPING UPPERS OVER LASTS
Filed Sept. 12, 1945
6 Sheets-Sheet 3
I Invehfo'r
Sept. 24, 1946.
B. JORGENSEN
2,408,022
MACHINE FOR sHAP'ING UPPERS OVER LASTS
Filed Sept. 12, 1945
‘
6 Sheets~$heet 4
0
/
4/522,
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£30
Bernhardt ‘Er-gensen
_ 5% his Attorneg
Sent. 24, 1946.
B_ JORGENSEN
7
2,408,022
MACHINE FOR SHAPING UPPERS OVER LASTS
By his Attorney ‘
Sept 24, 1946»
B. JORGENSEN
2,408,022
MACHINE FOR SHAPING UPPERS OVER LASTS
Filed Sept.v 12, 1945
6 Sheets-Sheet 6
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Patented Sept. 24, 1946
2,408,022
UNITED STATES PATENT OFF-ICE “
2,408,022
MACHINE FOR SHAPING UPPERS OVER
LASTS
Bernhardt Jorgensen, Marblehead, Mass, as
signor to United ShoeMachinery Corporation,
Flemington, N. 1., a corporation of New Jersey ‘
Application September 12, 1945, Serial No. 615,806
37 Claims. (CI. 12-44)
1
2
This invention relates to machines for shaping
uppersover lasts, and is herein illustrated as ap
plied to a toe-lasting machine which, except as
hereinafter noted, is constructed substantially as
disclosed in United States Letters Patent No.
2,160,846, granted on June 6, 1939, on an applica
tion of F. C. Eastman’s and A. F. Pym’s. It is
to be understood, however, that in various novel
aspects the invention is not limited to the illus
their jaws. Further depression‘ of the treadle
beyond the position where it causes the grippers
to close serves to start the cycle of operations of
the machine and to actuatemeans for maintain
ing the compression of the Valve spring regard
less of the treadle,
'
In. addition to novel features involved in the
construction above outlined, the invention fur
ther provides novel means for changing at a Pre
,
10 determined time in the operation of the machine‘
the force with which the grippersig‘rip the upper.
The machine shown in the above-mentioned
In. the illustrative embodiment of the invention
Letters Patent is provided with grippers which
the force of the grip on the upper is thus reduced
grip the marginal portion of an upper about the
by automatic control of the above-mentioned.
toe end of a last and apply a pull to the upper
in the course of a cycle of automatic operations 15 valve spring substantially at the time when the
wipers begin their movements to wipe the mar
of the machine, and with wipers which, after wip
ginal portion of the upper inwardly over the in
ing the toe end of the upper heightwise of the
sole, thus permitting the upper to slip more freely
last, wipe its marginal portion inwardly over an
in the gripper jaws to avoid excessive strain
insole on the last also in the course of the cycle
trative embodiment.
thereon. Thereafter, by further automatic con
of operations, An objector this invention, in
general, is to provide improved means for pulling
the upper and thereby to improve the results ob
tained in the lasting operation. In order that
the force of the pull applied to the upper may be ,
, readily determined and controlled, the machine
herein shown has toe grippers, comprising an end
gripper and side grippers, which are closed on
the upper by ?uid-pressure means and are so
formed as to slip more or less on the upper in the
25
trol of the spring, the grippers are caused to open
and release the upper.
The above and’ other features of the invention,
including various novel details of construction
and combinations of parts, will now be more par
ticularly described with reference to the accom
panying drawings and thereafter pointed out in
the claims.
In the drawings:
'
i
Fig. 1 is a view in right-hand side elevationof
the machine in which the‘ invention is: herein
shown as embodied, with parts broken away;
Fig. 2 is a View partly in right-hand side ele
vation and partly in section, on an enlarged scale,
vided by the invention for determining this pres- ,
sure and for causing the closure of the grippers 35 of the upper front portion of the machine;
Fig. 3 is a view partly in front elevation and
comprises a. relief valve arranged to be opened by
partly in section of most of the structure shown
the ?uid delivered by a pump and oiiering in
in Fig. 2;
itially such little resistance to escape of the ?uid
Fig. ‘l is mainly a plan view of parts shown near
as to prevent the development of sufficient pres
the top of Fig. 2;
sure to close the grippers, together with means
Fig. 5 is a view partly in elevation and partly in
for increasing the resistance of this valve to es
section of one of the side grippers and the grip
cape of the ?uid and for thereby causing the
per-closing mechanism associated therewith;
grippers to close. In the construction shown the
Fig. 6 is a view partly in right-hand side ele
valve is controlled by a spring through compres
vation
and partly in section, showing the means
45
sion of which the resistance of the valve to the
for supplying ?uid under pressure to close the
escape of the ?uid is thus increased and which by
grippers and the means for controlling the clos
adjustment variably determines the force with
ing and opening thereof, the parts being shown
which the upper is gripped in the upper-pulling
in their initial positions;
operation. ‘As further herein illustrated, the
Fig. 7 shows a portion of the controlling. mech
spring is controlled by a treadle by depression of 50
anism shown in Fig. 6, with the parts as they
which the grippers are caused to close as above
appear at the start of the cycle of operations of
described prior to the starting of the cycle of op
the machine;
citations of the machine and by optional release of
Fig. 8 is a central vertical section from front
which the grippers may be caused to open to per
upper-pulling operation, so that the force of
their pull on the upper depends upon the pressure
of the operating ?uid whereby they are closed.
Simple and conveniently controllable means pro
mit the‘upper to be better positioned between
to rear, showing the end gripper and the wipers
2,408,022
3
4
as they appear at the time in the operation of the
machine when the wipers are about to begin the
wiping of the upper heightwise of the last;
Fig. 9 shows one of the side grippers as it
appears at the same time in the operation of
the machine as in Fig. 8;
inward laterally of the shoe in proper time rela
tion to their other movements by wiper-closing
mechanism supported on the wiper carrier and
operated through a bell-crank lever 34 pivotally
mounted at 36 on the carrier and connected by r
a link 38 to an arm v40 fast on a rockshaft 42
Fig. 10 is a'vi'ewisimilar to ‘Fig. 8,',with the
on which is also secured aniarmv 44' operated
by a'cam on the cam shaft 24; as more fully
parts as they appear when the ‘wipers are about
to begin the wiping of the upper inwardly ove
the insole;
-
10
disclosed in the previously mentioned Letters
Patent.
Fig. 11 is a plan view showing the grippers
and the wipers in the same relation to the shoe
The cycle of operations of the machine cor
responds to one'complete revolution of the cam
as inFig. 10;
shaft 24. This cam shaft carries a worm gear
46 driven by a worm '48 on a shaft 50 which is
i
Fig. 12 is a view similar to Fig.‘ 10, showing
the parts as they appear when the grippers are 15
about to release the upper;
Fig. 13 illustrates the relation of one of the side
grippers to the shoe and the wipers at the same’
time in the operation ofvthe machine as in Fig.
operated intermittently through a friction clutch
'52, one element of this clutch consisting of a
drum or pulley 54 driven continuously through
a belt 56 by an electric motor 58. The clutch
is actuated or tripped to start the machine by
12; and
'
20 forward swinging movement of an arm 66 against
Fig. '14 is a view similar to Fig. 12, with the
the resistance of a spring 62. At its lower end
parts as they appear when the wipers have com
this arm 'is provided with a pin 64 normally
pleted their inward wipingmovements.
engaged by a shoulder 66 formed on a forwardly
In View of the "disclosure in the previously
and rearwardly extending bar 68 the rear end
mentioned Letters Patent,‘ such parts of the ma- 25 of which is held'by a spring 70 on a supporting
chine herein shown as are common to that dis;
screw ‘i2 and is engaged by a stop 14 won the ’ '
closure will be described only in so far as is
frame to limit its rearward movement. ’ The for
necessary for an’ understanding of the present
ward swinging movement of the arm 60 is ac
invention.’ For positioning the shoe in. proper
cordingly effected by engagement of the shoulder
relation to the lasting instrumentalities the ma- 30 8'5 on the bar ‘68 with the pin 64 in response to
chine is provided with a'member 2 detachably
supported on the‘lower end of a rod or post 4
forward movement of the bar. The bar 68 is
thus operated by a treadle 15 fast on a rockshaft
which is vertically adjustable by means of a
78 on which is also secured an upwardly extend
sleeve 6 threaded in a top frame casting 8 secured
ing arm 80 connected to the bar by a. pin 82
on the’main frame ID ‘of the machine. The 35 and swung rearwardly by a spring 84 when the Y
member 2 engages the bottom face of the toe
treadle is released. As disclosed in the previously
'end of the insole and, for positioning a shoe of
mentioned Letters Patent, the clutch-tripping
the welt type','eng'ages also the inner face of-the
arm 68 is further controlled by cam-operated
lip of the insole around the end andv along the
mechanism (not herein fully shown) whereby it ‘ V
sides of the‘ toe. ‘Substantially at the begin- 40 is moved downwardly to disengage the pin 64
. ning of the cycle of operations of the machine
from the shoulder 66 and thus to permit the
the. shoe is clamped againstthe member '2‘ by
arm to beswung rearwardly by the spring 62 in
upward movement of a toe rest 12, and early
case the operator continues’ to hold'the treadle
in ‘the cycle of operations also a heel restM
depressed, and whereby also the arm 60 is there
. (Fig. 1) is moved rearwardly into engagement 45 after moved upwardly to disengage the clutch and with the heel end of the shoe to assist (in holding
bring the machine to a stop at a time determined
it"during the lasting operation.
' -'
by the cam which controls it.‘ It may be assumed
As part of the lasting means, the machine is
further provided with a pair of wipers l6 which
that, ‘in accordance with the disclosure of the
above-mentioned Letters Patent, the machine
are advanced lengthwise of the shoe and are _ 50 thus comes to a stop twice prior to the end of
closed inward laterally of the shoe to embrace
the cycle, ?rst to permit the operator to attach
the upper about the toe end of the last and are
. swung upwardly to wipe the upper heightwise of
draw it part way inwardly» under the wipers
a binder wire to one side of the shoe and to
the last, after which they'are‘ further advanced
7 around the toe, and again to permit him to fasten
and closed to wipe the marginal portion of the 55 the wire at the other side of the shoe after the
upper inwardly over the feather and against the
wipers have been partially retracted and opened 7
lip of the insole, the lip being supported against
and again advanced and closed to force the wire
the inward. pressure of the wipers by theymem
?rmly against the upper. It will be understood
ber 2. The wipers are supported on a wiper
that after each of such stops in the cycle of
carrier. 18 mounted at its rear end for swinging 60 operations the operator again starts the machine
1 . movements heightwise of the shoe on a rod 20
in the same manner as initially by depression
(Fig. 1) supported on the upper end of a lever
22 which is operated to advance the wiper car
of the treadle.
rier and the wipers; lengthwise of the shoe by a
shown may be assumed to be of substantially the
cam (not shown) on- a'cam shaft 24.
'
As thus ., far described the machine herein
The front 65 same construction as disclosed in the above-men
end portion of the wiper carrier is connected by
a pair ‘of downwardly extending links 26 to a
pair of arms28 fast one rockshaft 30 on which
that prior disclosure for grippingthe margin of
is also secured an arm 32 operated by another
the toe end of the upper and for applying a pull
cam (not shown) on the cam shaft 24.
tioned Letters Patent. For purposes of this in
vention'it is provided with means different from
By this J 70 to the upper to assist the wipers in the lasting of
means the wiper carrier and the wipers are
swung" upwardly about the axis of the rod 20
to Wipe the upper heightwise of the last and are
the toe. Guided for upward and downward move—
ments by the post 4 and by a sleeve 86 (Figs. 3
later swung downwardly to press the upper on
a support for an end gripper '98 arranged to grip
and 8) on the post is a block 88 which serves as
the feather of the insole. The wipers are closed i 75 the marginal portion of the upper about the end
25,408,022
5
of the toe‘ and. fora pair of side grippers; 92 ar
ranged to. grip; it" respectively‘ at the opposite
6
into upper-gripping position with‘ a component
of outward movement‘ with respect to the edge of
sides of the-toe. The-two side grippers are sup
the shoe bottom. A tail portion I46 of the jaw
ported directly by the block 83 and are mounted
I42 is connected by a link I48 to a, piston I50
on studs 94 on this block to swing laterally of
mounted‘ in a cylinder I52 having an extension
the shoe in directions oblique‘ to the longitudinal
I54 secured between the two plates I40. A spring.
median line of the forepart of the shoe, as is evi
I56 connected to a pin I58 on the link 548 and to
dent from Figs. 4 and ll. The end gripper 90‘ is
a pin I60 on the cylinder I 52. holds the jaw I42
supported directly‘ by another block 96 which is
initially in open position determined by engage-Y
adjustable vertically along a guideway 98 in the 10 ment of its tail portion I46 with a pin I62. Clos
block 88 and is secured in adjusted position by a
ing or upper-gripping movement is imparted to
screw I00. The end gripper is, therefore, actthe jaw I42. by ?uid admitted to the cylinder I52
J'ustable, heightwise of the; shoe relatively to the
through a ?exible conduit H34 communicating
side grippers, andit is further mounted to swing
with the conduit I36 leading to the cylinder I26
in directions, lengthwise of the shoe about a stud
associated with theend gripper.
' I 02; on the. blo,ck,96.
Upper-pulling movements heightwise of the
The end gripper 90: includes a pair of‘ upper
last are imparted to the end gripper and the side
gripping iaws I04land‘; I06,,the jaw I04 being fas
grippers after they have closed on the upper; by
tened to a small bloclr: I08 which is secured be~
upward movement of; the block 88 against-the re
tween the lower ends. of two spaced upwardly 20 sistance of a spring I66‘ con?ned between a shoul
extending plates IIO pivotally mounted at their
der on the block and the sleeve 86‘, the sleeve
upper-ends on the stud I02 at opposite sides of
abutting at its upper end against a boss I68 (Fig.
the. block 96-. The jaw‘I04 is provided with a
3) extending downwardly from the frame cast.
substantially horizontal upper-gripping portion
I II the edge of which‘ is curved about the toe
end of. the shoe and‘ on which the upper is
clamped by the lower edge of the jaw I06, this
jaw‘ consisting of a comparatively‘ thin, substan
ing 8 and serving as a guide for the upper end
. portion of the adjustable post 4. Secured in the
block 38 and extending downwardly therefrom
are two pins, I10 which rest at their lower ends
on inwardly extending arms I12 of levers I14 piv
tially vertical plate curved about the toe end of
otally mounted between their ends on pins I16
the shoe similarly to the edge of the upper-grip 30 supported in a web I18 extending inwardly from
ping portion of the jaw I04. The upper end por
the front of the frame casting 8. The arms I12
tion. of the jaw I06‘ is fastened to a small block
are engaged underneath by screws I90‘ which are
H2 which is secured to a forwardly extending
threaded in the web I18 and thereby serve to sup
lower end‘ portion of abar I I4 pivotally‘connected
port the block 88 and the grippers initially at an
atv its upper end to one arm: of a bell-crank lever 35 adl'ustably variable height. The levers I114 are
I I6 mounted between the two plates I I0 to swing
further provided with outwardly extending arms
about a. pin H8‘ The‘ bar I I4 is further con
I82 the outer end portions of which are engaged
trolled by a link I20 also mounted between the
above by arms I84 (Figs. 2 and 3) which are fast
plates I I0 and pivotally connected at its opposite
on a rockshaft IBB mounted in bearings in the
ends respectively tov the‘ plates and to the bar.
frame casting 8. It will thus be seen that up
The other arm of thebell-crank lever H6 is con
ward movement of the block 98 and the grippers
nected by a link I22 to a piston I24 movable in a
is effected by downward swinging movements of
cylinder I26 having. a downwardly extending
the two arms I84‘. These arms are thus operated,
portion I28 secured between the two plates HE.
under control of a cam I88 (-Fig. 1) on the cam
A spring I30 connected to a pin I32‘ on the link “ shaft 24, by a spring I90. connected to a bell
I20 and to a pin I34 on the hub of the bell-crank
crank lever EQI which is mounted to swing about
lever II 6 tends to raise the bar H4 and the
the previously mentioned shaft 42 and one arm
‘gripper jaw‘ I06 and holds the jaw initially in a
of which carries a roll I92 in engagement with
raised or open position. in which it is shown in.
Figs. 2 and 3 with the. piston I24‘ at the inner "
end of the cylinder I26. It will be understood
that the jaw I06 is moved downwardly to clamp
or grip the upper against the cooperating jaw
I04, as shown in Fig. 8, by operating fluid ad
mitted to the cylinder I26. The operating ?uid,
preferably light oil, is admitted to the cylinder
I26 at the proper time, as more particularly here
inafter described, through a conduit I36 leading
from the source of ?uid: supply, a portion of this
conduit being ?exible to permit the required
movements of the gripper in the pulling of the
upper.
-
Each of the side grippers 92 includes a jaw
I38 (Fig. 5) secured between the lower ends of a
the cam. The other arm of the bell-crank lever
is connected to an upwardly extending link I94
secured to the upper end of which is a member
it? (Fig. 2) provided with a slot I98 through
which extends a pin 200. carried by one of the
arms I84. Threaded in the upper end Of the
member I98 is a rod 2&2 which extends down
wardly into the slot I98‘ and also extends up
wardly through an opening in the top of‘ the
frame casting 8', the rod having on its upper end
a knob 204‘ for turning it to vary the distance be
tween the lower end of the rod and the pin 260.
When the cam Iii-5 arrives in position to permit
the bell-crank lever I.9I to be. swung downward
ly by the spring I90.‘ downward movement is im
parted to the link I94. and the member I96 to
pair of. upwardly extending plates I40. the upper 65 carry- the screw 202 into engagement with the
ends of which are mounted on the corresponding
pin 200, after which further downward movement
stud 94 at. opposite sides of a lug I.4I extending
of these parts serves to swing the arms I84 down
from‘ the block 88. Thejaw I38 has an outwardly
wardly and thus to operate the grippers to pull
and upwardly inclined upper-engaging- face, in
View of the more upstanding position of the por
tion of the margin of. the upper‘ engaged by- each
side gripper as compared with the portion en
gaged. by the end gripper 90. Arranged to co
operate with the jaw I-3-B to grip the upper is a
' the upper heightwise of the last.
In the course of the above-described upper
pulling movements of the grippers heightwise of
the last they also receive short movements which
may be termed upper-spreading movements, the
end gripper swinging: outwardly about the stud
jaw I42 pivotally mounted on. a, pin I44 toswing 75 W2 and the side grippers about. the studs 94 For
2,408,022
7
7
thus operating the end gripper there is fast on
ment of the belt 56 with a pulley 266 fast on‘tlie“
shaft 258 of‘ the pump. The pump ‘receives'?uid
the rockshaft I86 an arm 206 (Fig. 8) provided
through a pipe 260 and delivers it to a coupling,
with a roll 208 arranged to engage the inner edge
262 from which the previously mentioned con;
of one of the plates N6 of the end gripper. It
will be understood that in the upper-pulling op 5 duit I36 leads toward the gripper-closing cylinders. Normally, however, the fluid delivered ‘by
eration the arm 206 is swung downwardly, thus
the pump returns to the reservoir 250 through a
causing the roll 208 to impart the outward
by-pass including a valve casing 264 and a pipe
swinging movement to the gripper. The swing
266 without developing any substantial pressure,
ing movement of the end gripper is effected
1. e., pressure suf?cient to overcome the'force of
against the resistance of a return spring 2 I 0 (Fig.
2) which surrounds a rod 2I2 extending rear
rwardly through a bar2|4 fast on the frame cast
ing 8 and provided at its front end with an eye
the gripper-opening springs I30 and I56. The
valve casing 264 is provided with a port 210 in
communication with the coupling 262, and controlling the port 210 is a valve 212 arranged to be
2I6 mounted on the pin H8. The spring 2I0
bears at its rear end against the bar 2I4 and at 15 opened by the ?uid but to be pressed toward its
seat by a spring 214. The outer end of this spring
its front end against a washer 2IS in engage
is seated in a recess formed in a plunger 216 which
ment with the eye 2I‘6. Arranged to cooperate
is slidingly movable in a sleeve 218 threaded in
with the spring 2I0 to determine adjustably the
the wall of the reservoir 250 and is engaged on
initial position of the end gripper with respect
to movement about the stud I02 is a screw 225] 20 its'outer end by a screw 280 carried by an arm
282 pivotally mounted on a supporting member
(Fig. 8) whichis threaded in a block 222 secured
between the two plates III) of the gripper and
284 on the reservoir.
bears at its inner end against a shoulder 224 on
the block 96. The outward swinging or upper
by a link 286 to one arm of a bell-crank lever 288
mounted on a rod 290 on the frame of the ma
The arm 282 is connected
spreading movements are imparted to the side 25 chine, and extending downwardly from the other
arm of this bell-crank lever is a rod 292 the lower
grippers by the swinging movement of the end
end of which extends through an eye bolt 294
gripper. For this purpose there is provided a
,rotatably mounted on an arm 296 which is fast
lever 226 having downwardly extending lugs 228
on the treadle-operated rockshaft 18. Pivotally
(Figs. 2, 4 and 8) which are mounted on the stud
I02. In the rear end of the lever 226 isthreaded 30 ‘mounted on the rear end of this arm is a latch
288 held normally by a spring 300 under a collar
a screw 230 the lower end of which is arranged to
302 fast on the rod 292. It will thus be seen that
be engaged by a shoulder 232 on the block 222 to
when the treadle 16 is'in its initial position, de
termined by the engagement of the rear end of
ing movements to the side grippers the front end 35 the bar 68 with the stop 14 under the influence
of the spring 84, the rear end of the arm 296 is
portion of the lever 226 is arranged to engage
in its lowest position, and at this time butlittle,
the inner ends of two arms 234 each of which in
swing the lever about the stud I02 by the swing
ing of the end gripper. For imparting the swing
terlocks with one of the plates I46 of the corre
if any, force is exerted on the valve-controlling
sponding side gripper and is held in ?xed rela
tion to the gripper by a head on the stud 94. The
outward swinging movement of each side gripper
is effected against the resistance of a return
spring 236 (Figs. 3 and 5) which surrounds a rod
238 extending outwardly through an opening in
the frame casting 8. The spring abuts at one end
against this casting and at the other end against
spring 214 by the plunger-216. Under these con;
ditions the ?uid is delivered by the pump past the
a'washer 240 which is seated on an enlarged in
— ner end portion of the rod. The rod is connected
valve 212 without developing sufficient pressure to
close the grippers on the upper. In response,
however, to depression of the treadle after'a shoe
has been presented to the machine the rod 292
' is lifted by the arm 296 and the latch 298, thus
causing the arm 282 to force the plunger 216 in
wardly and to compress the spring 214. The
pressure thus applied to the valve 212', tending
to obstruct the flow of the ?uid through the port
by a universal joint 242 to another rod 244 which
is threaded in'a block 246 secured between the 50 210, causes such an increase in the pressure of
two side plates I40 of the gripper and bears at _ the ?uid delivered by the pump as to close the
grippers on the upper.
_
its inner end against the gripper-supporting.
block 88. It will be evident that by turning the,
Fast on the rod 292 is a block 304 having'a
rod 244 the initial position of the side gripper
front vertical face 306 engaged initially by the
with respect to swinging movement about the 55 upper end of a latch 308 pivotally mounted on
stud 94 may be varied, the spring 236 holding the
the frame and controlled by a spring 3I0. Ini
rod normally against the block 88. The rod 244
tially, to cause the closure ‘of the grippers, the
is thus turned to adjust the gripper by turning
operator depresses the treadle only as far as de
movement of the rod 238 effected by the use of a
termined by a slot 3I2 (Fig. 1) which is formed
60 in the front end of the bar 68 and through which
knob 248 on its outer end.
The jaws of the several grippers have smooth
the.pin 82 carried by the arm 80 extends. The
upper-engaging faces to permit them to slip on
increased resistance to further movement of the
the upper when the force of the pull thereon
treadle when the pin 82 reaches the front end of
becomes great enough, thus insuring against any
this slot is perceptible to the operator and assists
danger of distorting or damaging the upper ma 65 him in stopping the movement of the treadle at
terials. The force of the pull applied by the
that point. This initial movement of the treadle
does not move the block 304 far enough upwardly
grippers to the upper, therefore, depends upon
to carry its vertical front face 306 beyond the
the force with which they grip the upper, and
this is determined by the pressure of the fluid in
latch 308. If, therefore, the operator should
the gripper-closing cylinders I26 and I52. Fluid 70 observe that the margin of the upper is not prop
erly engaged by the grippers, he may cause the j
is supplied to these cylinders from a reservoir
grippers to'open and release the upper merely by
250 (Figs. 1 and 6) secured to the rear of the
permitting the treadle to return to its initial posi
frame I0 vand having therein a body of ?uid 252
tion. This affords the opportunity to rearrange
under atmospheric pressure. Mounted in the
reservoir is a rotary pump 254 driven by engage 75 the margin of the upper in the grippers prior to
‘2,408,022
the starting of the cycle of operations of the
machine. After the upper has been properly
gripped the treadle is further depressed to trip
the clutch and start the cycle of operations. In
10
gripped he may cause the grippers to open and
release the upper merely by releasing the treadle '
and thereby permitting the spring 214 to expand.
In that event, after rearranging the margin of
response to such further movement of the treadle 5 the upper in the grippers, he again depresses the
the rod 292 is moved farther upwardly to increase
treadle as before and if the upper is properly
the compression of the spring 214 and thus to
gripped he further depresses it to trip the clutch
increase the force with which the grippers grip
and start the cycle of operations. ‘By such fur
the upper 'by further increasing the pressure of
ther depression of the treadle the valve-control
the operating ?uid. In this operation the block 10 ling spring 214 is further compressed to cause
304 is moved far enough upwardly to cause the
the grippers ‘to grip the upper with greater force
latch 308 to be swung by the spring 3| 0 to a posi
in the upper-pulling operation, and the ‘block 304
tion under the lower face of the block, as illus
is moved so far upwardly that the latch 308 ‘is
trated in Fig. ‘7, so that the spring 214 will be held
swung to a position under the lower face of the
under the increased compression by the latch.
block, as ‘shown in Fig. 7, the latch 298 being
It will be evident that the force with which the
swung out from under the collar 302 by the pin
upper is gripped in the upperepulling operation
325 to permit the block and the rod 292 to be
of the grippers may be ‘varied by adjustment of
supported by the latch 308. The positions of the
the screw 28!] to vary the compression of the
grippers when they thus grip the upper are as
spring 214 controlling the valve 212 which serves “20 illustrated in Figs. 8 ‘and 9.
'
as ‘a ‘relief valve.
Early in the cycle of operations, as more fully
When the latch 308 is swung into position under
described in the previously mentioned Letters
the block 304 as above described,‘ a roll 3I4
Patent, the toe rest I2 is moved upwardly to
mounted on a tail portion 3I5 of the latch is
clamp the shoe against the member 2 and the
carried into engagement with a cam 3I8 on the
heel rest I4 is moved into shoe-engaging position.
cam shaft v‘24, as shown in Fig. '1. Substantially
When the cam I88 (Fig. 1) arrives in position
at the time in the cycle of operations when the
to permit the bell-crank lever IQI to be operated
Wipers IE begin their movements to wipe the
by the spring I90 this movement of the bell
marginal portion of the upper inwardly over the
crank lever operates the rockshaft I86 and causes
insole a rise 320 on the cam engages the roll 3I4 30 the'arms I84 on the rockshaft to ‘swing the levers
and swings the latch ‘308 out from under the
I14 in the directions to raise the gripper-support
lower ‘face of the block 304 to the position indi
ing block 88, thus causing the grippers to pull
cated by dotted lines in Fig. 7, thus permitting
the upper heightwise of the last. At substan
the rod 292 to move downwardly until a screw
tially the same time the arm 206 (Fig. 8) on the
322 carried by the block engages the upper end 135 rockshaft swings the end gripper 90 a short dis
of the latch. In this manner the pressure of
tance in a rearward ‘direction, and by this move
the grippers on the upper is reduced by reducing
ment of the end gripper the side grippers 92 also
the pressure of the fluid whereby they are held
are swung outwardly through the action of the
closed. Thereafter, before the wipers have com
lever 226 on the arms 2-34. The several grippers
pleted their inward wiping movements, a further 40 thus have an outward spreading action on the
rise 324 on the cam swings the latch out from
margin ‘of the upper. The grippers may slip
under the screw 322 and permits the rod 292 to
more or less on the upper when the force of their
return to its initial position, thus causing the
pull thereon becomes great enough, and it will
grippers to open and release the upper by reason
be evident that the force with which the upper
of the further reduction of the pressure of the 45 is pulled accordingly depends upon the force with
operating ?uid. In order that the rod 292 may
which it is gripped by the ‘action of ‘the ?uid
be permitted thus to move downwardly if the
pressure means, as determined by the force of
operator should continue to hold the treadle
the valve-controlling spring 214. In the course
depressed, a pin 326 on the frame engages a tail
of the upper-pulling operation the toe wipers I6
portion 328‘ of the latch 298 and swings the latch 50 are ‘advanced and closed about the toe and are
out from under the collar 302 when the operator
swung upwardly to wipe the upper heightwise
depresses the treadle far enough to trip the
of the last. As illustrated in Fig. 10, the wipers
clutch, as illustrated in Fig. '7.
are thus moved upwardly to the proper positions
The manner of operation ‘of the machine will
for wiping the margin of the upper inwardly over
now be briefly summarized. The operator pre :55 the feather of the insole, and if the grippers are
sents the shoe in the position determined by the
not moved far enough upwardly by the action of
member 2 with the margin of the toe end of the
the spring I90 to make way for the wipers, the
upper extending between the open jaws of the
latter engage the grippers and further raise them
several grippers, and while holding the shoe in
to the proper positions, as permitted by the cam
that position he depresses the treadle 16 as far .60 I88. Substantially at the time when the wipers
as permitted by the lost motion between the arm
thereafter begin their movements to wipe the
80 and the bar 68" (Fig. 1). By this depression
upper inwardly over the insole the rise 320 on
of the treadle the rod 292 (Fig. 6) is lifted by
the cam 3 I8 swings the latch 308 out from under
the latch 208 on the arm 296 to compress the
the lower face of the block 304 to the dotted line
spring 214 and ‘thereby to cause the valve 212 to 65 position shown in Fig. ,'1, thus permitting the
offer ‘such resistance to the return of the ?uid
valve-controlling spring 214 to expand as much
from the pump through the port 210 as to cause
as permitted by engagement of the screw 322
the pressure of the ?uid between the valve and
with the latch. This serves to reduce the force
the pump to increase su?icie‘ntly to operate the
with ‘which the upper is gripped by ‘the grippers
pistons I24 and I50 and thus to close the grippers 70 to permit the upper to ‘slip ‘more freely between
on the upper. The extent of this movement of
their jaws and thus to assist in avoiding any
the treadle is not enough to carry the face 306
excessive strain thereon as the wipers wipe it
on the block 304 upwardly beyond the latch 308,
inwardly. When the wipers have partially'com
and, accordingly, if the operator observes that
pleted their inward wiping movements and have
the margin "of the upper has not been properly 75 arrived in positions such as indicated, for exam
2,408,022
"111
12
‘
ple, in Figs. 12 and 13, the further rise 321iv on
‘ "3. In a machine'for shaping‘uppers ‘over lasts,
the cam 3|8 swings the latch 308 out from under
the screw 322 to release the block 304 and thus
to permit the spring 214 to resume its initial con
dition. By reason of the resulting reduction of
pressure of the ?uid the grippers open and re
lease the upper, as illustrated in Fig. 14 where
the wipers are shown as substantially at the limits
of their ?rst overwiping movements. As herein
before suggested and as more fully disclosed in
upper-gripping’ means} for gripping the margin
of an upper on a last and for pulling the upper,
?uid-operated means for, closing - said upper
grippingmeans on the upper, a'pump for nor
mally circulating operating ?uid, a valve in the
?uid circuit arranged to open in the direction
of the ?ow of the ?uid, means providingcom
munication between said ?uid-operated means
‘and the ?uid circuit at arpoint in the circuit
between the valve and the pump, a spring ar
the previously mentioned Letters Patent, the
ranged to apply to said valve force tending to
machine comes automatically to a stop when the
wipers are thus holding the upper in overwiped I close it but normally offering insui?cient resist
ance to circulation of the ?uid to cause the upper
position to permit the operator to attach a binder
wire to one side of the shoe and to draw it part 15 gripping means to be closed on the upper by
pressure developed between the valve and the
way inwardly under the wipers around the toe,
pump, and means for causing such closure of the
after which the operator again starts the ma
upper-gripping means by control of said spring.
chine by depression of the treadle. The wipers
4. In a machine. for shaping uppers over lasts,
are then partially retracted and opened to permit
the wire to be drawn more tightly inward against 20 upper-gripping means for gripping the margin
of an upper on a last and for pulling the upper,
thermargin of the upper and are again advanced
and closed to force it ?rmly against the upper, I ?uid-operated means for closing said upper-grip
whereupon themachine once more comes to a
ping means on the upper, a reservoir for oper
ating ?uid, a pump for delivering ?uid from said
stop to permit the binder to be fastened at the
other side of the shoe. In response to another 25 reservoir to said ?uid-operated means, a by-pass
for normally returning ?uid from the pump to
depression of the treadle the machine completes
the reservoir without developing su?icient pres
its cycle of operations, the parts being returned
to their starting positions.
It will be evident
sure to close the upper-gripping means on the
upper, a valve in said by-pass arranged to open
that in response to such second and third depres
sions of the treadle the valve-controlling spring 30 in the direction of the ?ow of the ?uid, a spring
for yieldingly opposing such opening of the valve,
214 is momentarily compressed and may thus
and means for causing the upper-gripping means
cause the grippers to close, but these movements
to close on the upper by increasing the stress
are idle movements. since the upper is no longer
of said spring.
between the gripper jaws. At these times, more
5. In a machine for shaping uppers over lasts,
over, the latch 308 is held by the high portion 35
upper-gripping means for gripping the margin
of the cam 3I8 in such a position that the rod
of an upper on a last and for pulling the upper,
292 is not held upraised by the latch but is per
?uid-operated means for closing said upper-grip
mitted to return immediately to its initial posi
ping means on the upper, a pump for delivering
tion when released by the latch 298.
Having described the invention, what I claim 40 operating ?uid to said ?uid-operated means, a re
lief valve arranged to be opened by the ?uid and
as new and desire to secure by Letters Patent of
permitting escape of excess ?uid delivered by the
the United States is:
pump, said relief valve determining by its resist
1. In a machine for shaping uppers over lasts,
upper-gripping means for gripping the margin _ ance to escape of the ?uid the force with which
of an upper on a last and for pulling the upper,‘ 45 the upper is gripped by the upper-gripping means
but offering initially such little resistance to
?uid-operated means for closing said upper-grip
ping means on the upper, a pump for delivering
escape of the ?uid as to prevent the development .
of suf?cient ?uid pressure to close the upper
gripping means on the upper, and means for
open passage for the ?uid from the pump to said
?uid-operated means, a valve arranged to be 50 causing such closure of the upper-gripping means
operating ?uid, means providing a constantly
opened by the ?uid delivered by said pump and
by increasing the resistance of the relief valve
to permit normally such escape of the ?uid as
to escape of the ?uid.
to prevent the development of su?icient ?uid
pressure to close the upper-gripping means on
the upper, and means for causing such closure:
of the upper-gripping means by applying to said
valve force tending to close it.
2. In a machine for shaping uppers over lasts,
upper-gripping means for gripping the margin
of an upper on a last and for pulling the upper,
' ?uid-operated means for closing said upper
'
6. In a machine for shaping uppers over lasts,
upper-gripping means for gripping the margin
of an upper on a last and for pulling the upper,
.55 ?uid-operated
means for closing said upper
gripping, means on the upper, a pump for deliv
ering operating ?uid to said ?uid-operated
means, a relief valve arranged to be opened by
the ?uid and permitting escape of excess ?uid
delivered by the pump, a spring controlling said
relief valve and determining by its stress the
force with which the upper is gripped by the
upper-gripping means, said spring offering ini
stantly open passage for the ?uid from the pump
to said ?uid-operated means, means providing 65 tially such little resistance to escape of the ?uid
as to prevent the development of suf?cient ?uid
an outlet for the ?uid delivered by said pump,
gripping means on the upper, a pump for deliv
ering operating ?uid, means providing a con
a valve controlling said outlet and arranged to
be opened by the ?uid, a spring arranged to apply
to said valve force tending to close it but normally
pressure to close the upper-gripping means on
the upper, and means for causing such closure
of the upper-gripping means by increasing the
offering insufficient resistance to the escape of
the ?uid to cause the development of such ?uid
stress of said spring.
pressure as to close the upper-gripping means on
the upper, and means for causing such closure
means for gripping the marginrof an upper on
of- the upper-gripping means by increasing th
stress of said spring. v
'
,
7a In a machine for shaping uppers over lasts,
a last, power-operated mechanism for effecting
relative movement of said upper-grippingmeans
r 75 and the last to pull the upper in the course of
12,408,022
13
‘ l4
a cycle ‘of ‘automatic operations of the machine,
a treadle movable by the operator, and mecha
permit‘the ‘opening ‘of the upper-egrippmg means
nism for closing said ‘upper-gripping means on
11. In a machine for‘shaping‘uppers over lasts,
‘the upper in response to movement of said treadle
prior to the starting of the cycle of operations,
‘said upper-gripping means being movable to re~
lease the upper in response to optional release of
:last, power-operated mechanism ‘for effecting
relative movement of said upper-‘gripping means
also prior to the starting of‘the cycle.
‘
'
‘means for gripping the margin of ‘an upper on a
and the last ‘to pull the upper in the courseof a
cycle of automatic operations of the machine, va
the treadle by the operator also prior to the start
ing of the cycle.
member movable by the operator, mechanism for
8. In a machine ‘for shaping uppers over lasts,
means for gripping the margin of an upper on a
closing said upper-gripping means on ‘the upper
in response ‘to movement of said member prior
last, power-operated mechanism for effecting rel
to the starting of the cycle of ‘operations, and
ative movement of said upper-gripping means
means for starting the cycle of operations by ‘fur
and the last to pull ‘the upper in the course of
ther movement of said ‘member in the same di
a cycle of automatic operations of ‘the machine, 15 rection beyond the position where it causes the
‘a treadle movable by the operator, and power
closure of the upper-‘gripping means.
»
operated mechanism for closing said upper_
12. In a machine for shaping uppers over lasts,
gl‘ipping means on the upper in response to move
means for gripping the margin of an upper-on a
ment of said treadle prior 'to the starting of the
last, power-operated mechanism for e'ifecting
cycle of operations of the machine, said last~ 20 relative movement of said upper-gripping ‘means
named power-operated mechanism being re~
and the last to pull the upper in the course of a
versely (movable to cause the upper-gripping
‘cycle of ‘automatic operations of the machine, a
means to release the upper in response to optional
clutch through which the cycle of operations is
release of the treadle by the operator also prior
performed, a member movable by the operator,
to the starting of the cycle.
mechanism for ‘actuating the clutch to start ‘the
9. In a machine ‘for shaping uppers over lasts,
cycle ‘of operations by movement ‘of said mem
means for gripping the margin of an upper on a
ber, means providing for lost motion between's'aid
last, power-operated mechanism for eiiecting -rela~
member and the ‘clutch-actuating means to per
tive movement of said upper-gripping means and
mit a preliminary movement ‘of the member ‘prior
the last to pull ‘the upper in the course of a cycle 30 to theactuation of the clutch, and mechanismfor
‘of automatic operations of the machine, fluid-0p
closing the upper-gripping means on the upper
erated mechanism for closing said upper-gripping
in response to said preliminary movement of the
means on the upper, a pump for delivering oper
member.
ating ?uid to said ?uid-operated mechanism, a
13. In a machine for shaping uppers over lasts,
relief valve permitting escape of excess ?uid de 35 means for gripping the margin-of an upper ‘on ‘a
liveredby the pump, said relief valve determining
‘variably by its resistance to escape of the ?uid
‘the force with which the upper is gripped by the
upper-gripping means but offering initially such
little resistance to escape of ‘the ?uid as to pre
vent the development of sui?cient ?uid pressure
to close the upper-gripping means on the upper,
and means for causing such closure of the upper
grip'ping means by increasing the resistance of
last, power-operated mechanism for effecting
relative movement of said upper-"gripping means
and the last to pull the upper in the course of a
cycle of automatic operations of the machine, a
clutch through which the cycle of operations is
performed, a member movable by the operator,
?uid-operated mechanism for closing the upper
gripping means on the upper in response to
movement of said member prior to the starting
the relief valve to the escape of the ?uid prior 45 of the cycle of operations, and means for actu
to the starting of the cycle of operations of the
machine and for optionally thereafter causing
the upper-gripping means ‘to release the upper
‘by decreasing said resistance also prior to the
starting of the cycle.
ating the clutch to start the cycle of operations
by further movement of said member in the same
direction beyond the position where it causes the
closure of the upper-gripping means.
14. In a machine for shaping uppers over lasts,
10. In a machine for shaping uppers over lasts,
means for gripping the margin of an upper on a
means for gripping the margin of an upper on
a last, power-operated mechanism for e?ecting
relative movement of said upper-gripping means
ative movement of said upper-gripping means
and the last to pull the upper in the course ‘of
and the ‘last to pull the upper in the course of a 55 a cycle of automatic operations of the machine,
‘cycle ‘of automatic operations of the machine,
?uid-operated means for closing said upper-grip
fluid-operated mechanism for closing said upper
ping means on the upper, a pump for delivering
grippi-ngmeans on the upper, a pump for deliv
operating ?uid to said ?uid-operated means, a
ering operating ?uid to said ?uid-operated
relief valve arranged to be opened by the ?uid
mechanism, a relief valve arranged to be opened 60 and permitting escape of excess ?uid delivered
by the ?uid and permitting escape of excess ?uid
by the pump, said relief valve offering initially
delivered by the pump, a spring controlling said
such little resistance to escape of the ?uid as
relief valve and determining by its stress the
to prevent the development of suf?cient ?uid
force with which the upper is gripped by the up~
pressure to close the upper-gripping means on
per-gripping means, said spring offering initially 65 the upper, a member movable by the operator,
such little resistance toescape of the ?uid as to
means movable by said member to cause the c1o~
prevent the development of sufficient ?uid pres
sure of the upper-gripping means by increasing
sure to close the upper-gripping mean-son the
the resistance of the relief valve to escape of the
upper, and a member movable by the operator to V ?uid prior to the starting of the cycle of opera
increase the stress of said spring and thereby to 70 tions, and means for starting the cycle of opera
cause the closure of the upper-gripping means
tions by further movement of said member after
prior to the starting of the cycle of operations of
the closure of the upper-gripping means.
the machine, the spring being responsive to re
15. In a machine for shaping uppers over lasts,
verse movement of said member to decrease the
means for gripping the margin of an upper on
resistance to ‘escape of the ?uid and thereby to 75 a last, power-operated mechanism for e?ecting
last, power-operated mechanism ‘for e?ecting rel
2,408,022
"15
16
.
?uid-operated mechanism for closing said upper
relative movement of said upper-gripping means
and the last to pull the upper in the course of
a cycle of automatic operations of the machine,
?uid-operated means for closing said upper-grip
gripping means on the upper, a treadle movable
by the operator, controlling'mechanism movable
by said treadle to render the ?uid-operated mech
anism thus operative and reversely movable also
ping means on the upper, a pump for delivering
operating ?uid to said ?uid-operated means, a
relief valve arranged to be opened by the ?uid
and permitting escape of excess fluid delivered
by the pump, a spring controlling said relief valve
and determining by its stress the force with 10
in response to release of the treadle by the oper
ator to cause the release of the upper by the
upper-gripping means, and a device for locking
which the upper is gripped by the upper-grip
ping means, said spring o?ering initially such
treadle beyond a predetermined position to main
little resistance to escape of the ?uid as to pre
of the treadle.
said controlling mechanism against such reverse
movement in response to its movement by the
tain the grip on the upper regardless of release
.
20. In a machine for shaping uppers over lasts,
vent the development of sufficient ?uid pressure
to close the upper-gripping means on the upper, 15 upper-gripping means for gripping the margin
of an upper on a last and for pulling the upper,
a member movable by the operator to cause the
?uid-operated means for closing said upper-grip
closure of the upper-gripping means by increas
ping means on the upper, a pump for deliver
ing the stress of said spring, and means for start
ing operating ?uid to said ?uid-operated means,
ingthe cycle of operations also by movement of
said member.
'
20 a relief valve arranged to be opened by th'e ?uid
and permitting escape of excess ?uid delivered ,
16. In a machine for'shaping uppers over lasts,
means for gripping the margin of an upper on
a last, power-operated mechanism for effecting
relative movement of said upper-gripping means
and the last to pull the upper in the course of 25
a cycle of automatic operations of the machine,
a member movable by the operator, mechanism
for closing said upper-gripping means on the
upper in response to movement of said member‘
and for optionally thereafter causing the upper
_ gripping means to release the upper in response
to release of said member by the operator prior
to the starting of the cycle of operations, and
means for starting the cycle of operations by fur
ther movement of said member after the closure
of the upper-gripping means.
17. In a machine for shaping uppers over lasts,
means for gripping the margin of an upper on
by the pump, a spring controlling said relief valve
but offering initially such little resistance to es
cape of the ?uid as to prevent the development
of su?icient ?uid pressure to close the upper
gripping means on the upper, controlling mech
anism movable by the operator to cause such
closure of the upper-gripping means by increas
ing the stress of said spring and reversely mov
able also at the will of the operator to cause the
release of the upper by the upper-gripping
means, and a device for locking said controlling
mechanism against such reverse movement in
response to its’ movement by the operator beyond
a predetermined position.
21. In a machine for shaping uppers over lasts,
means for gripping the-margin of an upper on
a last, power-operated mechanism for effecting
relative movement of said upper-gripping means
a last, power-operated mechanism for effecting
relative movement of said upper-gripping‘means 40 and the last to pull the upper in the course of a
cycle of automatic operations of the machine, a
and the last to pull the upper in the course of
member movable by the operator, controlling
a cycle of automatic operations of the machine,
mechanism movable by said member to cause the
a clutch through which the cycle of operations
upper-gripping means to grip the upper and re
is performed, a member movable by the operator,
versely movable at the will of the operator to
mechanism for actuating the clutch to start the
‘cause the release of the upper by the upper
cycle of operations by movement of said member,
gripping means, means for starting the cycle of
means providing for lost motion between said
operations by further movement of said member
member and the clutch-actuating means to per
after the gripping of the upper, and a device for
mit a preliminary movement of the member prior
locking said controlling mechanism against re
to the actuation of the clutch, and mechanism
for closing the upper-gripping means on the up
per in response to said preliminary movement of
the member and for optionally also causing the
verse movement in response to such further
movement of said member.
‘ '
V
22. In a machine for shaping uppers over lasts,
means for gripping the margin of an upper on a
upper-‘gripping means to release the upper upon
reverse movement of the member prior to the
last, power-operated mechanism for e?ecting rel
starting of the cycle of operations.
ative movement of said upper-gripping means
and the last to pull the upper in the course or a
18. In a machine for shaping uppers over lasts,
upper-gripping means for gripping the margin
of an upper on a last and for pulling the upper,
power-operated mechanism for closing said up
per-gripping means on the upper, a member mov
cycle of automatic operations of the machine,
?uid-operated means for closing the upper-‘grip
60 ping means on the upper,‘ a member movable by
the operator, controlling mechanism movable by
said member to render the ?uid-operated means
thus operative and reversely movable in response
, able by said member to render the power-oper
to release of said member by the operator to
ated mechanism thus operative and reversely
cause the release of the upper by the upper-grip
movable also in response to release of said mem
ping means, means for starting the cycle of op
ber by the operator to cause the release of the
erations by further movement of said member
upper by the upper-gripping means, and a device
after the gripping of the upper, and a device for
for locking said controlling mechanism against
locking said controlling mechanism against re
_ such reverse movement in response to its move
ment beyond a predetermined position to main 70 verse movement in response to such-_ further
movement of said member.
tain the grip on the upper regardless of release
23. In a machine for shaping uppers over lasts,
of said member.
.
"
(
‘
meansfor gripping the margin of-an upper on
19. ‘ In a machine for shaping uppers over lasts,
a last, power-operated mechanism for e?ecting
upper-gripping means for gripping the margin of
‘an'upper on a last and for pulling the upper, 75 relative movement of said upper-gripping means
able by the operator, controlling mechanism mov
'17
2,408,022
and the last to pull the upper in the course of
a cycle of automatic operations of the machine,
?uid-operated means for closing the upper-grip
ping means on the upper, a pump for delivering
operating ?uid to said ?uid-operated means, a
relief valve arranged to be‘ opened by the ?uid
18
a cycle of automatic‘ operations of the machine,
?uid-operated means for closing the upper-grip
ping means 'on the upper, a pump for delivering
operating ?uid'to' said ?uid-operated means, a
relief valve arranged to be opened by the ?uid
and permitting‘ escape of excess ?uid delivered
by the pump, a spring controlling said, relief
the pump, a spring controlling said relief valve
valve'and determining by its stress the force with
but o?ering initially such little resistance to
which the upper is‘gripped by the upper-‘gripping
escape of the fluid as to prevent the development 10 means, and automatic‘ means for changing the
of sufficient ?uid pressure‘ to close the upper
force'with which the upper is thus gripped by
gripping means on the upper, a member movable
altering the stress of said spring at a predeter
by the operator, controlling mechanism movable
mined time in the cycle of operations While still
and permitting escape of excess ?uid delivered by
by said member to cause the closure of the upper
gripping means by increasing the stress of said
spring and reversely movable in response to re
lease of said member by the operator to cause
the release of the upper by the upper-gripping
means, means for starting the cycle of operations
by further movement of 'said member after the
gripping of the upper, and a device for locking
said controlling mechanism against reverse
maintaining the grip on the upper.
28. In a machine for shaping uppers over lasts,
means for gripping the margin of an upper on a
last, power-operated mechanism -for‘ effecting
relative movement of‘ said upper-gripping means
and'the last to pull the upper in the course‘of
the operation of the machine, ?uid-operated
means for closing the upper-gripping means‘on
the upper, and automatic means for reducing the
force with which the upper is gripped by the
of said member. ,
upper-gripping means by reducing the pressure
24. In a machine for shaping uppers over lasts, 25 of the operating ?ui‘d at ‘a predetermined time in
means for gripping the margin of an upper on a
the operation of the machine‘ while still main-'
last, power-operated mechanism for effecting
taining the grip on the upper and for thereafter
relative; movement of said upper-gripping means
further reducing the‘ pressure of the ?uid to cause
and the last to pull the upper in the course of
the upper-gripping means to release the upper.
the operation of the machine, ?uid-operated 30
29‘. In a machine for shaping uppers over lasts,
means for closing the upper-gripping means on
means for gripping the margin of an upper on a
the upper, and automatic means for changing
last, power-operated mechanism for e?ecting
the force with which the upper is gripped by
relative movement of said upper-gripping means
the upper-gripping means by control of the op
and the last to pull the upper in the course of the
erating ?uid at a predetermined time in the op
movement in response to such further movement
eration of the machine while still maintaining
the grip on the upper.
25. In a‘machine for shaping uppers over lasts,
means for gripping the margin of an upper on a
last, power-operated mechanism for effecting
relative movement of said upper-gripping means
and the last to pull the upperin the course of
the operation of‘ the machine, fluid-operated
operation of the machine, ?uid-operated means
for closing the upper-gripping means on the up
per, a valve for determining the force with which
the upper is gripped‘by the upper-gripping means
by control of the pressure of the operating fluid,
and automatic means for reducing the force of
the grip on the upper by control of said valve at
a predetermined time in the operation of the ma
chine while still maintaining the grip on the
upper and for thereafter‘ by further control of
means for closing the upper-gripping means on
the upper, a valve for determining the force with 45 said valve causing the upper-gripping means’ to
which the upper is gripped by the upper-gripping
release the upper.
means by control of the operating ?uid, and au
30. In a machine for shaping uppers over lasts,
tomatic means for changing the force with which
means for gripping'the margin of an upper on a
the upper is thus gripped'by control of said valve
at a predetermined time in the operation of the 50 last, _ power-operated mechanism for effecting
relative movement of said upper-gripping means
machine While still maintaining the grip on the
and the last to pull the upper in the course of the
upper.
26. In a machine for shaping uppers over lasts,
means for gripping the margin of an upper‘ on
a last, power~operated mechanism for effecting
relative movement of said upper-grippingmeans
and the last to pull the upper in the course of
the operation of the ,machine, ?uid-operated
operation of the machine, fluid-operated means
for closing the upper-gripping means‘ on the up
per, a pump for delivering operating ?uid to said
?uid-‘operated ‘means, a relief valve permitting
escape of excess ?uid delivered by the pump‘ and
determining by its resistance‘ to the escape of the
fluid the force withwhich the upper is gripped by
the upper-gripping means, and automatic means
means for closing the upper-gripping means on
the upper, a pump for delivering operating ?uid 60
for reducing said resistance at a predetermined
to said ?uid-operated means, a relief valve per
time in the operation of the machine to reduce
mitting escape of excess ?uid delivered by the
the force‘ of the grip on the upper while still
pump and determining by its resistance to the
escape of the ?uid the force‘with which the upper
maintaining the grip thereon and for thereafter
further reducing said resistance to cause ‘ the
is gripped by the upper-gripping means, and 65 upper-gripping
means to release the upper.
automatic means for changing the force with
31. In a machine for‘s‘haping uppers over lasts,
which the upper is thus gripped by control of said
valve at a predetermined time in the operation of
the machine while still maintaining the grip on
means for grippingthe margin of an upper on a
last, power-operated mechanism for effecting
relative movement of said upper-gripping means
the upper.
70 and the last to pull the upper in the course of
27. In a machine for shaping uppers over lasts,
a cycle of automatic operations of the machine,
means for gripping the margin of an upper on a
overlaying means for laying the marginal por
last, power-operated mechanism for effecting
tion of the upper inwardly over an insole on the
relative movement of said upper-gripping means
last also in the course of the cycle of operations,
and the last to pull the upper in the course of 75 ?uid-operated means for closing the upper-grip
2,408,022
20
19.
ping means on the upper, and automatic means
for reducing the force with which the upper is
gripped by the upper-gripping means by control
of the operating ?uid substantially at the begin
ning of the overlaying movement of said overlay
ing means while still maintaining the grip on the
upper.
32. In a machine for shaping uppers over lasts,
means for gripping the margin of an upper on
35. In a machine for shaping uppers over lasts, ‘
grippers for gripping the margin of an upper
about the toe end of a last, power-operated mech- V
anism for eiiecting relative movement of vsaid
grippers and the last to pull the upper'in the
course of a cycle of automatic operations'of the
machine, said grippers being so formed as- to
permit them to slip ‘on the upper in response to
its resistance to the force of the pull thereon,
wipers arranged to embrace the toe end of the
a last, power-operated mechanism for effecting
relative movement of said upper-gripping means
upper and movable to wipe its marginal portion
and the last to pull the upper in the course of a
inwardly over an insole on the. last also in the
cycle of automatic operations of the machine,
overlaying means for laying the marginal portion
course of the cycle of operations; and automatic
means for reducing the force with which the up
of the upper inwardly over an insole on the last
per is gripped. by said grippers after they have
pulled the upper to permit them toslip more
also in the course of the cycle of operations, ?uid
freely on the upper as the wipers wipe its mar
operated means fo-r'closing the upper-gripping
ginal portion inwardly over the insole.
means on the upper, a ‘pump for delivering op
36. In a machine for shaping uppers over lasts,
erating ?uid to said ?uid-operated means, a re~
lie-fr valve permitting escape of excess ?uid de 20 grippers for gripping the margin of an upper
liveredby the pump and determining by its re
sistance to the escape of the ?uid the force with
about ‘the toe end of a last, power-operated
mechanism for effecting relative movement of
which the upper is gripped by the upper-gripping
said grippersand the last to pull the upper in
means, and automatic means for reducing the
the course of a cycle of automatic operations of
force with which'the upper is thusgripped by
the machina'said grippers being soiformed as to
permit them to slip on the upper in response to
its resistance to the force of the pull thereon‘,
wipers arranged to embrace the toe end of the
upper. and movable to wipe its marginal portion
reducing-the resistance of said valve to the escape
of the?uid substantially at the beginning of the ,
overlaying movement of said overlaying means
while still maintaining the grip on the upper.
_ 33, In a machine for shaping uppers over lasts, 30 inwardly over an insole on the last also in the
grippers for gripping the‘ margin of ‘an upper
about the toe end of a last, power-operated mech
course of the cycle of operations, fluid-operated
means for‘ closing the grippers on the upper, a
of the upper ‘and movable to wipe its marginal
portion inwardly over an insole on the last also
valve for determining the force with whichthe
upper is gripped by the grippers by control‘ of
the pressure of the operating ?uid, and automatic
means for reducing the force with which the
upper is thus gripped by control‘ of said valve
after the grippers have pulled the upper to permit
inYthe course of the cycle of operations, and.
automatic means for reducing the force with
ginal portion is wiped inwardly by the .wipers.
anism vfor effecting relative movement of said
grippers and the last to pull the upper in the
course'of a ‘cycle of automatic operations of the
machine, wipers arranged to embrace the toe end
them to slip more freely on the upper as its mar
37. In a machine for shaping uppers over lasts,
grippers for gripping the margin of ,an upper
about the toe'end of a last, power-operated mech
the wipers to wipe the upper inwardly over the
anism foreffecting relative movement of said
insole while still maintaining the grip on the
45 grippers and the last tovpull the upper in the
course of a ‘cycle of automatic operations of the
34. In a machine for shaping uppers over lasts,
machine, saidgrippers being so formed as to per
grippers for. gripping the margin of an upper
mit them toslip on the upper in response to its
about the toe end of a last, power-operated mech
resistance to the force of the pull thereon, wipers
anism for, effecting relative movement of said
arranged to embrace the toe end ‘of the upper
grippersand the last to pull the upper in the
and movable to wipe its marginal portion 'in- ,
course of a‘ cycle of automatic operations of the
wardly over an insole on the last also in the
machine, wipers'arranged to embrace the toe end
course of the cycle of operations, ?uid-operated
of the. upper and movable to wipe its marginal
means for closing the grippers on the upper, a
portion inwardly over an insole on the last also
pump for delivering operating ?uid to said ?uid
inthe course of the cycle of operations, ?uid
operated means, a relief valve permitting escape
operated means for closing said grippers on the
upper, a pump for delivering operating fluid to
of excess fluid delivered by the pump and deter
mining by its resistance to the escape of the ?uid
said ?uid-operated means, a relief valve permit—‘~
which the upper is gripped ‘by said grippers sub
stantially at the beginning of the movements of
upper.
,
Y
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>
.
the iorce with which the upper is gripped by the
ting escape‘ of excess fluid delivered by the pump
and. determining by its resistance to the escape 60 grippers, and automatic means for reducing the
force with which the upper is thus gripped by
of the ?uid the force with which the upper is
reducing the resistance of said valve to the escape
gripped by the grippers, and automatic means
of the ?uid after the grippers have pulled the
forsreducing the force with which the upper is
upper to permit them to slip more freely on the
thus ‘gripped ‘by reducing the resistance ‘of said
upper as its marginal portion is wiped inwardly
valve to, the escape of the ?uid substantially at
the beginning of the movements of the wipers
byltherwipersny
;
'
v
.
to wipe‘ the upper inwardly over the insole while,
'
still maintaining the grip on the upper.
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BERNHARDT‘JORGENSEN.
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