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Патент USA US2130590

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Sept. 20, 1938.
Filed June 26, 1937
5 Sheets-Sheet 1 l
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Sept. 20, 1938.
Filed June 26, 1937
5 Sheets-Sheet 2
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Patented Sept. 20, 1938
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ElzearJ. Le Gault, Haverhill, Mass, assignor, by
direct and mesne assignments, to- Bestco Shoe
Machinery, Inc, Ipswich, Mass, a corporation
of Massachusetts
Application‘ June 26, 1937, Serial No. 150,592
3 Claims.
This invention relates to presses for use in‘ ap
plying pressure to shoe bottoms, for example, in
cement-‘attaching soles to shoes or for any other
operation in which it is desired to apply a pre
5,,;ydetermined pressure to the contour of a shoe
bottom for a controllable interval of time. In
one aspect the invention consists in improvements
upon the machine disclosed in my copending ap—
plication, Serial No. 114,2{ll ?led December 4,
lib-1936. In another‘a‘sp'ect it consists in improve
ments which‘ are of general ‘application- to ma
chines‘ of that type.-
Objects‘ of the ‘invention are to improve the
shoe-supporting and positioning elements and“ the
moi-inflatable pad, and in general‘ to provide an im
proved“ jack for sole presses.‘ To these ends an
important‘ feature consists" in a bed- piece carry—
ing an‘ in?atable pad and having posts located at
each end in combination with a shoe holding bar
20; pivotally' connected to one post and connected for
Preferably, and as herein shown, the pad is
provided with a transverse reinforcing sheet which
is located‘ in’ the pad beneath the forepart of the
shoe. This has been found not only‘ to increase
the life of the pad, but to insure an- improved dis
tribution of pressure upon the‘ shoe bottom.
These and other features of the invention will
be best undersood and appreciated from the fol
lowing description of a preferred embodiment
thereof, selected for purposes of illustration and 10
shown in the accompanying drawings in which,
Fig. l is a view of the improved jack in side
elevation, showing the shoe holding bar in ele
vated position,
Fig. 2 is a similar view showing also the ma
chine frame, the shoe supporting bar being shown
in its lowered position,
Fig. 3 is a view in front elevation of one of the
limited vertical adjustment to the other post. It
will be understood that the in?atable pad in
Fig. 4 is a view in elevation of the jack showing
the shoe supporting bar lowered and the pad in
presses of this type is conformed more or less to
the‘ irregular contour of the bottom so that in
presenting the shoe with its temporarily attached
sole ample clearance greatly facilitates the work
of the‘ operator. In presses where such clearance
is‘ not allowed there is always danger of displac
ing the sole in the step of presenting the shoe in
30,]operative position. Accordingly, the present in
‘vention contemplates a shoe holding bar which
is‘ yieldingly maintained in elevated position at
one end, preferably corresponding to the heel end
of the shoe, and is associated with means by which
35;;it may be ‘swung toward the pad by the operator
and located in its lowered position. after the shoe
has been presented and accurately located under
, conditions of ample clearance.
Other features of the‘invention relate more
myparticularly to .the construction of the inflatable
pad‘ which is herein shown as constructed of two
flat sheets of heavy leather or the like of sub
stantially equal size and the contour of an en
larged shoe bottom, the said pieces being united
throughout their side edges and forepart with a
marginal strip which is interposed between their
edges and laced together at their heel ends. Such
a pad may be constructed conveniently at a min
imum of expense. It is of sturdy and reliable
construction and well adapted to acquire a molded
contour corresponding to that of the shoe bot
tom. Moreover, the laced rear ends of the sheets
comprising the pad aiford convenient means of
removing, and replacing the enclosed bladder
55 should this be necessary.
Fig. 5 is a sectional view of the pad and a shoe ,
Fig. 6 is a fragmentary View in perspective of
the pad, and
Fig. 7 is a view of the unin?ated pad in longi
tudinal section.
The press herein shown comprises a plurality
of jacks, only one of which is illustrated, arranged
around a segmental frame H supported by legs.
H3 at a height convenient for the operator as more
fully disclosed in my application above identi?ed.
Each of the jacks comprises a cast bed plate.
l2 having a recess or pocket in its upper face and Co CA
being inclined upwardly toward the toe end. of
the shoe and outwardly with reference to the
segmental supporting frame.
The base plate‘
overhangs the frame 9 I on each end and is. pro
vided with a pair of vertical posts l3 and l4. ’ The‘ 40
post I4 is rigidly but adjustably secured to the
forward end of the base plate Iii, having its lower
end threaded and provided with check nuts for
that purpose. At its upper end the post I4 is
forked and provided with a transverse pivot pin
it upon which the shoe holding or presser bar
i6 is arranged to swing. The forward portion of
the transverse bar 16 is provided with a guideway
in which is adjustably mounted a downwardly
extending forepart abutment H.
The presser
bar is curved downwardly at its rear end to pro
vide an abutment 18 adapted to engage the comb
of the last 46 and its rear end is ?attened and
reduced in width so that it may pass into the 55
forked end of the post l3 which is rigidly secured
to the rear end of the base plate [2.
The post I3 is shouldered and maintained in
engagement with the base plate by a nut at its
shown in Figs. 5 and 7. The pad which is usual
in presses of this kind contains a rubber bladder
36 having a threaded stem 31 which extends
.down through the bed plate [2 and is connected
by a tube 38 to a three-way valve 39. The valve
39 communicates with a source of compressed air
and has an operating arm connected through a
treadle rod 23 to a treadle 24 located beneath
the jack and in convenient reach of the operator.
After the shoe has been located as above ex 10
plained, the operator may depress the free end
lower end. Its upper end is forked as already
stated to receive the ?attened rear end I9 of the
presser bar and it is provided with a longitudinal
bore in which is placed a compression spring 2!]
bearing against the lower side of the reduced end
10 l9 and tending always to lift the presser bar l6
and maintain it in elevated position as shown in
Fig. 1. In the upper end of the post I3 is mounted
an eccentric disk 2| which bears upon the upper
side of the reduced end l9 and is provided with
of the treadle 24 thus lifting the treadle rod and
admitting compressed air to the pad 30-3|. The
lasted shoe is then left under pressure for a
an outwardly extending handle 22 by which the
suf?cient interval of time to permit the cement
to set and effect permanent union of the sole 42 15
to the bottom of the shoe. The operator then
proceeds to work along the segmental frame
placing one shoe after another in the various
operator may easily and rapidly swing the eccen
tric disk 2| from its-open position as shown in
Fig. l to its closed or lowered position as shown
in Figs. 2 and 4. By swinging the handle 22
through 180° the presser bar I6 is forced down
Wardly against the action of the spring 20 for a _
predetermined distance and rigidly locked in its
lowered position with the forepart and last abut
ments brought into contact with or closely adja
cent to the lasted shoe 4| as shown in Fig. 2.
In the raised position of the presser bar the
operator has ample clearance for inserting the
jacks and eventually returns to operate the valve
39 cutting off the supply of air and opening an
exhaust port so that the pad is rapidly de?ated.
When this has been done the presser arm is
released and the shoe removed as already ex
Having thus disclosed my invention what I 25
claim as new and desire to secure by Letters Pat
lasted shoe with its temporarily attached outsole ent
of the United States is,
42 in position beneath the abutment members,
improved jack for sole presses, compris
and having accurately located the shoe under ing aAn
stationary bed piece carrying an in?atable
these conditions, he may then lower the presser pad, posts located at both ends of the bed piece,
bar preparatory to in?ating the pad beneath the
a shoe-holding bar connected to one post and
shoe. Similarly, after the pressure interval, the slidably
engaged within a slot in the other post,
operator may swing the handle 22 to open posi
tion thus insuring ample clearance between the spring means encased in the latter post and nor
shoe and the abutment members for conveniently mally elevating said bar, and means mounted in 35
the slotted post and under the control of the
removing the shoe with its completely attached operator
for depressing the bar to a predeter
The in?atable pad comprises a pair of pieces 30
40 and 3| which may be of sole leather or other
tough and ?exible sheet material. These pieces
are cut to the same size and roughly approxi
mate in outline the shape of an enlarged shoe
bottom. The pieces 30 and 3| are stitched to
gether about their marginal edges by a heavy
seam 32 and interposed between their edges is a
?exible spacing strip herein shown as a double
strip of welting 34, which consists of thin strips
of leather in face to face engagement. This
spacer strip extends about the side edges and
forepart of the pad, while across the rear end
the pieces 30 and 3! are laced together by a
lacing 33. The lacing may be removed to afford
convenient access to the interior of the pad when
this is desired, without otherwise disturbing the
construction of the pad.
As an optional, but desirable feature, the pad
is herein shown as equipped with a reinforcing
sheet 35 which extends transversely across the
60 pad in a location beneath the forepart of the
shoe, being held at each end by the seam 32 as
mined location after a shoe has been presented
beneath it.
2. An improved jack for sole presses, compris
ing a bed piece carrying an in?atable pad, posts 40.
at both ends of the bed piece, a shoe-holding
bar pivoted at one end to one post and arranged
at its other end to move vertically in a slot pro
vided in the other post, a spring encased in the
latter post tending always to lift that end of 45
said bar, and an eccentric disk mounted in the
upper end of the slotted post and bearing at all
times upon said bar.
3. An improved jack for sole presses, compris
ing a base shaped to carry an in?atable pad of 50
full length of a shoe bottom, a toe post having
a bar pivoted thereto, and a heel post slotted at
its upper end to receive one end of the bar and
having a longitudinal bore therein, a spring in
said bore acting at all times to lift said bar, and 55
an eccentric disk journalled in the heel post and
arranged to be rotatedv by the operator to force
down the heel end of said bar against the action
of said spring.
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