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Патент USA US2131378

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SePt- 27, 1938- _
, o.‘ L. LAWSON - '
2,131,378
EDGE SETTING IRON
Original Filed Jan. 2, 1936
2 Sheets-Sheet 1
Sept. 27, 1938.
O_ |__ LAWSON
2,131,378
EDGE SETTING IRON
Origirial Filed Jan. 2, ‘1956
J0
Y
2 Sheets-Sheet 2
Patented Sept. 27, 1938
2,131,378
1
UNITED STATES2,131,378’PATENT 1 OFFICE I
_
EDGE SETTING ‘IRON
Oscar L. Lawson, Lynn, Mass., assignor to Na
tional Development Company, Lynn, Mass, a
corporation of Massachusetts
January 2, 1936, SerialNo.
Application‘RenewedAugust
18, 1938
‘
~ 2 Claims.
(01. 12-103)
This invention relates to edge setting irons as
used in edge setting‘machines, for, setting 'th
edges of heel toplifts or soles of shoes.
An edge setting machine‘ in which the iron
herein described is adaptedto‘be used is shown
in the patent to Merton W. Howard, No. 1,829,800,
5
November
3,
1931.
‘
‘
'
‘
'
‘
The operation of setting the edge of an at
tached toplift has the object of ?nishing‘ and
10 polishing the raw edge of a toplift which has
previously been inked or waxed, of rolling in the
joint between the toplift and the heel so as‘ to
close the joint and make the'. surfaces of the
heel and toplift smooth and continuous, and of
— molding the edge of the toplift so as to form
thereon a projecting circumferential bead, a
suitably shaped "bed” or surface between the
‘bead and the heel proper and a portion known
as the “panel” at the outer side of the bead,
wo
57,084 '
>
‘operative surfaces can be supplied in this man
ner, and when the entire operative surface is
worn, it can be quicklyrenewed by again tum
ing it on a lathe vand cutting it as before. The
expense of manufacture and renewal is thus not 5
only greatly: reduced but the‘ user gets the
equivalent of six v‘irons for the‘price of one.
Before explaining in detail the present inven
tion it‘ is to be understood that the invention is
not limited in its application to the detailsof H O
construction‘and arrangement of parts illustrated
in the accompanying drawings, since the inven
tion is capable of other embodiments and of
being practiced or carried out in various ways.
Also it is to be understood that the phraseology
or teminology employed herein is-for the pur
pose of description and not of limitation, and it
is not intended to limit the invention claimed
herein beyond the requirements of the prior art.
20
which panel is subsequently buffed off for the
In the drawings:
?nal ?nishing of the toplift to bring the bead
flush with the outer surface. These operations
are usually performed bya heated iron having a
Fig. 1 is a left-hand elevation of an edge set
con?guration complementary to the desired'con
?guration of the bed, head and panel and'which
is so manipulated with relation tothe vedge in
question as to produce the above results.
Previous edge setting irons with which I have
‘
.
ting machine, in which my edge setting iron is
adapted to be used.
“
I‘
Fig. 2 is a perspective view of my edge setting
iron.
‘
ing the parts in disassembled relation.
“ Fig.4‘is'a vertical cross section on line 4—.-4
of Fig. 2.
one piece consisting of a shank portion ?tting
into a holder on the machine, and an integral
Fig. 5 is a side elevation of a’modi?ed iron
having a knurled surface.
operative portion having the desired'surface con
?guration which portion is rounded or convex
and is partially formed on a suitable cutting
tool. It is impossible, however, to get a‘ proper
‘
surface on the operative portion of such an iron
theI have
same eliminated
expensive hand
a great
work.
deal of ‘this expense
“ of manufacture and renewalof edge setting irons
25
Fig. 3 is a perspective view of the iron show
been familiar (see Fig. 7) have been made in
without a great deal of hand ?ling and polishing
done with the aid of a magnifying glass. This
hand work has made edge setting irons relatively
expensive articles if properly made. The sur-'
face of an iron also wears down quickly and has
to be recut frequently, involving arepetition of
5
'
'
i
304
Fig. 6 is a diagrammatic representation of the
cycle of operations of my edge setting iron on a
toplift.
‘
,
vFig. '7 is a diagrammatic representation of an
old type iron operating on a toplift.
Referring to the drawings, Fig. 1 is a side ele
vation of the edge setting machine shown in
Howard Patent No. 1,829,800, in which my edge
setting iron is adapted to be used.
The ma- '
‘chine in which the iron is used forms no part
of my. invention, and it is unnecessary to de
‘scribethe‘same in detail. For full description
‘of the machine'reference is hereby made to the
said Howard Patent No. 1,829,800.
by my invention, which consists‘ in making the
operative portion of the iron circular in shape
and separate from the shank portion. The oper
" My edge setting iron H] as shown in Figs. 2, 3
and 4 consists'of a hollow shank portion or stud
ative member can be turned entirely on a lathe
with a central hole [3 preferably threaded to
receive the threaded stem 21 and a plurality of 50
holes [4 surrounding said hole I3 for receiving
to give it its proper con?guration and finish. The
operative portion is then mounted on the shank
portion in proper position, as by a screw, and
when one operative surface wears down a new
surface is quickly presented merely by turning
the circular operative member. As many as six
ll having an extending supporting portion l2,
attaching. pins I5. The operative portion con
sists of a separate and circular or cylindrical
plug [8 having an operative surface IS, a groove
29 thereon for producing ‘the bead of the topllft 56
2
2,131,378
and a ?ange 2| for producing the “panel” on the
toplift. A central hole 22 therein corresponding
to hole l3 in the shank member receives the
screw 25 having the head 26 and threaded stem
a revolution to the opposite corner as shown in
Figure E. The heel is then turned in the oppo
site direction repeating the operation (not
shown). This is repeated as many times as may
2?. Plug l8 comprising the operative portion is,
be necessary to set the edge properly.
Fig. 7 pictures the old type of edge setting iron
of course, ?xedly mounted on shank support 12
by means of screw 25. The assembled edge set
operating on a toplift and illustrates one of the
ting iron of Fig. 2 is then mounted in holder 30 di?iculties of such an iron; The iron 32, in set
of the edge setting machine shown in Fig. 1.
ting the corner-edge of the toplift of the heel 35,
10
Previous edge setting irons (as shown in Fig. 7 the corner of the toplift could not be set without
herein and at 8 in Figs. 6 to 10 of said Howard. . using the corner of the iron, which necessarily
Patent No. 1,829,800) have been made in one pushes in the corner of the toplift distorting the
piece consisting of a shank portion and a rounded shape of the toplift. With the use of my edge
operative portion. To set the edge on the cor
setting iron l0, however, being circular in shape,
ners of a Cuban heel, work has to be done on
there is no corner on the iron and the corner of 15
the corners of the edge setting iron. This means
that the surface con?guration of’ the iron must
be carried out to the corners'which' cannot be
done by machine work. In manufacturing, this
iron is turned intermittently against the form
the heel is not pushed out of shape in the edge
setting operation.
the edges on soles of shoes. A good operative 20
surface of the iron is always presented at any
ing or cutting tool in the arc of a circle. But to
carry out the desired con?guration to the corner
angle. Also with old edge setting irons, it was
possible to knurl only the. edges on substantially
of the iron requires a great deal of hand work,
filing and polishing byhand with the aid of a
magnifying glass. If this hand work is not done
it has to be “broken in” by actual edge setting
and by the time it is broken in it is practically
worn out.
round heels; It was impossible to knurl the edge
of larger Cuban heel toplifts at the corners be 25
cause in the old edge setting iron the radius of
the knurling wheel was smaller than the radius
of the curvature of the iron, and‘ at the corners
the knurl work was held' away from the heel by
the corners of the iron. My iron having a cir~ 30
This means that the surface must be
renewed by recuttin'g and repolishing, duplicat
30 ing the previous operation.
These difficulties of manufacture have been
eliminated by my iron having a separate and
cylindrical operating portion. This part can be
machined by being put on an arbor and turned
CAD U! against the forming tool in constant application.
cular edge setting portion eliminates this di?i
culty, since the knurling wheel and edge setting
portion have the' same radius. The knurled effect
can be carried clear to the corners of the toplift
on Cuban heels.
The ?nal polish can then be put on in a similar
manner with a leather polishing wheel. All ex
By means of my invention, 1 am able greatly
to reduce the cost of manufacture of edge setting
pensive hand work is thus eliminated. A uni
form surface is provided all around the opera
40 tive portion which will give a .uniform edge to
the toplift. Because of its circular shape at least
six edge setting surfaces are provided which can
be used consecutively. As one wears out, the
screw 25 is loosened and plug l8 given a slight
turn presenting a fresh operating surface. When
these six operating surfaces have been used, the
entire surface can then be again renewed, by
duplicating ‘the previous cutting and polishing
operation just described.
I A knurled edge can also be provided as shown
in Fig. 5.
The operative portion of the iron is
the same as before, but is cut transversely into
two parts i8a and IBD and between them is
mounted the knurling wheel 28 which is freely
rotatable. The other parts of the iron, however,
are stationary. Unless rotatable the knurling
Wheel would, of course, not transfer the knurled
design but would act merely as a ?le.
Fig. 6 shows a cycle of operation of my edge
60 setting iron on a toplift. Fig. 1 shows my edge
setting iron In in use, a Cuban heel 35 being
mounted in the jack ready for the‘ edge setting
operation. In Fig. 6 beginning with Figure A
at the top and. proceeding therefrom through
?gures B, C, D and E consecutively the edge of
the toplift is presented to the iron beginning at
one corner and is then rotated three-quarters of
,
In addition to the foregoing advantages, my
edge setting iron also is better adapted for setting
35
irons,.and at the same time give the shoe manu
facturer an iron having six operating surfaces’
before having to be renewed, and the renewal of 40
such surfaces is easily and inexpensively done.
Many heel or shoe factories have had to have one
or more men doing nothing else than reshaping
and polishing edge’ setting irons. ‘The expense of
maintaining such irons is greatly reduced by 45
‘
means of my invention.
I claim:
'
1.'An edge setting iron having a shank portion
and a separate ' operative portion detachably
mounted thereon, comprising a cylindrical mem
ber having a pro?le corresponding to the con 50
?guration to be placed on the work, which is
ordinarily stationary, but is rotatable to present
'a new operative surface ‘when one surface is worn
out, and a freely rotatable ornamenting wheel
mounted on said cylindricalwmember.
55
2. An edge setting iron having a shank por
tion, and a separate operative portion detachably
mounted thereon,.comprising a cylindrical mem
ber divided transversely into two disks which are
ordinarily‘ stationary, butj arerotatable to pre
60
sent ‘a. new operative vsurface when one surface is
worn out, and having?a freely rotatable orna
menting wheel mounted between said disks, said
member havinga'pro?le corresponding to the
65
‘con?guration to be placed on the work.
.
.7
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"
OSCAR L. LAWSON.
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