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Патент USA US2120776

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June 14, 1938.
@_ B_ BRITTQN
HEEL NAILING DEVICE
Filed March 2, 1936
2,120,776
M2637@
Patented June 14, 1938
UNITED STATES PATENT ortica
2,120,776
HEEL NAILING DEVICE
Glenn B. Britton, Hannibal, Mo., assignor to In
ternational Shoe Company, St. Louis, Mo., a
corporation of Delaware
Application March 2, 1936, Serial No. 66,519
5 Claims.
The present invention relates to devices for
use in nailing heels to shoes and in particular
to devices for blind nailing rubber heels to shoes.
This is a companion case to an application filed
Ui
concurrently herewith, now Patent No. 2,085,894,
dated July 6, .1.937. The companion application is
directed to a method of nailing heels to shoes.
In blind nailing heels to shoes the tread sur
face of the heel, except for any tread design
thereon, is entirely free of holes or of guides to
indicate or direct the location of the securing
nails. Heels of this type are provided with
washers imbedded therein between the tread and
attachment surfaces and against which the head
of the nail is driven to retain the heel in place.
These washers are necessarily very accurately
located. Consequently, it becomes essential that
the nails be equally accurately directed in order
that they shall pass through the holes in the
washers.
It is an object of the present invention to pro
vide a heel ring and guide plate for use in con~
nection with such heels and that will direct the
nails to the proper position in the heel.
It is an object of the present invention to pro
li Cl
vide means for reducing the distance between
the tread surface and the washer temporarily
during the driving of the nails.
It is a further object to provide a guide that
will redirect any nail that has deilected from
proper alignment.
It is a further object to provide such a guide in
combination with a holder for the heel com*
monly known as a heel ring.
c: Ul
It is a further object to provide a guide of
such design that after its use, the hole in the
heel pierced by the nail, will at least substantially
close.
Further objects will appear from the following
speciñcations and the drawing.
In the drawing:
Fig. l is a plan view of a heel ring with the
guide thereon and a heel in place.
Fig. 2 is a right edge view of the heel ring and
guide.
Fig. 3 is a front end View of the heel ring and
guide.
Fig. 4 is a section on the line
Fig. 5 is a section on the line
Fig. 6 is a section on the line
Fig. 'I is a sectional View of a
In the drawing, a heel ring l0
‘flanges Il thereon by means of
4~-4 of Fig. 1.
5_5 of Fig. 1.
6-5 of Fig. 1.
modification.
is shown having
which it is sup
ported in the nailing machine.
By means of a cut-out portion l2 in one of the
(Cil. 1-32)
ñanges Il thereof, it is accurately located and
maintained in the nailing machine. The heel
ring is cut through with an opening i3 that cor~
responds with the peripheral contour of the heel
to be nailed. The heel iits very accurately in Ul
this cut-out i3 with a smooth sliding fit between
it and the walls of the heel ring. For reasons
to be explained, the depth of the heel ring ad»
jacent this cut-out i3 is such that the heel lo
cated therein projects only a short distance 10
above the top surface thereof. In other words,
the heel ring is of a substantial depth. The
ring is also provided with a beveled portion l5
to accommodate for the shank of the shoe dur
ing the operation of applying the heel.
The heel shown at i6 is provided with a plu
rality of washers ll', it, i9 and others imbedded
therein and spaced from thc attachment surface
thereof, the attachment surface being shown at
29. A hole 2l extends from the attachment sur
face down to the hole in the washer lil. It is de
sirable also to have a hole 22 extend from the
hole in the washer down toward the tread surface
23 of the heel and terminate a short distance
therefrom. This hole 22 is very small and, as will
be shown in the use of the inventionl receives the
nail as it is driven.
In forming the heel with the washers in it,
ordinarily the back washer l1 is located ñrst and
is carefully positioned relative to the back edge
of the heel. Then the remaining washers are
spaced at suitable distances from the washer I1
and from each other. The spacing of the several
washers is called “spread”.
In order to direct nails, supplied by the nailing
machine, properly through the tread surface 23
of the heel, a guide plate 25 is provided. This
guide plate is secured in proper location onto the
heel ring by means of screws 26, the guide plate
fitting in an inset cut or groove 21.
The screws
26 and the cut-out portion 21 serve to locate the
guide plate 25 properly relative to the heel cut
out i3 of the heel ring.
Upstanding from the top surface of this guide
plate and projecting into the cut-out i3 are
nipples 28 that follow the general shape of the
frustum of a cone although the walls may be
somewhat rounded. Guide holes 29 extend
through the nipples 28 and terminate in flared
openings 3l! in the bottom surface of the guide
plate 25. These nipples Ztl are so spaced when
the plate 25 is secured in position on the heel
ring lll as to correspond accurately with the lo
cation of the washers in a heel fitted into the
Cut-Out I3. As is shown in Fig. 7, the nipples 23 55
2
2,120,776
may be made separately from the guide plate, and
point of penetration, as soon as the stretching
secured thereto by screws or the like.
forces are removed, that portion will immediately
return to its original shape and, in so doing, will
at least substantially close the openings pierced
by the nails.
By this
modification, the nipples may easily be replaced,
or may be made of material different from that
of the guide plate 25.
The operation of the device is as follows:
The heel ring with the guide plate thereon, is
As a result of the use of this guide, blind nail
ing is made practical. No substantial scars are
inserted into the ring holder of a nailing device
left on the tread surface of the heel, so that the
and secured therein by engagement of the flanges
II and the slot I2. ` When thus located, the guide
plate 25 has its bottom face toward the die block.
A heel, such as a rubber heel, is placed within I
the cutout I3 and as previously stated, projects
a short distance above the top thereof. It will
15 be understood that the several washers Il, I8,
I9, etc. will then be located directly over the
several nipples with the holes 22 extending in
rather close proximity to the upper terminals of
the holes 29. The shoe to be heeled is then
20 brought down against the attaching surface 20
of the heel and force is applied to this shoe com
pressing it against the heel. The shoe thus
pressed against the heel is, as is usual in the art,
provided with a heel base, shown at B in Fig. 5.
This heel base extends outwardly beyond the
limits of the heel, and beyond the edges 0f the
cut-out I3. Consequently, when the pressure is
applied, the heel base forces the elastic heel down
so that it is stretched over the nipples 28, and
30 the undeformed portion of the tread surface is
brought into close proximity to the upper surface
of the guide plate 25. However, this pressure is
limited, since the heel base B, after a short travel,
strikes the edges of the heel ring I0, and its
35 movement arrested. By this limiting of the “pre
liminary pressure”, excess squeezing and strain
ing of the heel is prevented. Also, by having a
thick heel ring, the distortion of the heel pro
duced by this compression is entirely controlled,
40 so that it cannot extend laterally of the heel.
Lateral distortion tends to displace the washers,
and destroy the accuracy of their spread.
In this compression of the heel over the nipples,
it is desirable that they do not penetrate the
45 tread surface. In the stretching, the tendency of
the heel material is to flow radially and down
wardly around the outer surfaces of the nipples
28, these last acting with conical Wedge effect.
This action results in stretching the rubber be
tween the top of the nippl-es and the bottom of
holes 22, to bring the nipples considerably closer
to the said holes and closer to the holes in the
washers. It is probable that the lower part of
each hole is spread somewhat about the top sur
55 face of the nipple.
With the parts thus positioned, the nails are
driven. In the passage of the nails, th-e points
of any misaligned ones first strike the flared por
tions 30 and are properly directed into the smaller
60 holes Zä.
These last holes give the nails the
proper direction into the tread surface of the heel.
The nails penetrate the heel through the
stretched and reduced portions between the tops
of the nipples and the holes 22. When the nails
65 strike the holes 22, they will be held in the proper
direction of travel, since they ñnd less resistance
in following the direction of the holes than in
penetrating the walls thereof. By this means,
the nails are brought to and through the openings
in the washers and subsequently are driven into
the shoe. The shoe is then removed with the heel
attached thereto. When the heel leaves the
plate, the stretching produced by the nipples 28
is relieved. Since the nails penetrate a portion
75 of the heel that is stretched radially from the
tread design thereof Will not be marred.
The
number of rejected heels resulting from improper l0
nailing is vastly reduced.
It will be understood that this heel ring and
guide may be used with other heels than the one
shown. While it is desirable for best results that
the holes 22 be provided, they are not essential 15
to attaining superior results by the use of the
guide.
Further, the nipples may be omitted from the
guide plate, and that plate used with only cham
fered holes 3Q and guide holes 29 extending to
the top surface thereof. This arrangement pro
duces good results, much superior to any previ
ously obtained, but not as good as those obtained
with the nipples present.
What is claimed is:
25
l. In a heel device, means for locating a heel
having washers therein and spaced from the tread
surface thereof, a guide device associated with
the locating means, said guide device having
means thereon to reduce the distance from the 30
washers to the tread surface portions therebe
neath when the heel is located against the same,
said last-named means having holes therein to re
ceive and direct nails being driven into the heel
and through the washers.
2. In a heel device, a heel ring for locating and
holding an elastic heel to be nailed to a shoe, said
heel having washers imbedded therein at spaced
intervals, a guide plate secured to the heel ring,
upstanding nipples on said plate adapted to de 40
form the heel at the tread surface beneath. the
Washers when the same is pressed against the
plate to permit the tread surface to rest square
ly thereagainst, and by said deformation to re
duce the distance to be penetrated by the nails, 45
said nipples having holes therethrough to receive
the nails and direct them toward the washers.
3. A guide plate for use in nailing elastic heels
having washers imbedded therein and spaced
from the tread surface thereof, nipples upstand 50
ing from and ñxed to one surface of the plate, the
wall of each of said nipples converging as it pro
gresses out from said surface to provide a sub
stantially sharp reduced head, whereby when the
heel is pressed against the nipples it will be de 55
formed with spreading wedge-like actions that
reduce the distance between the nipple displaced
portions of the tread surface and the washers,
and said nipples having holes extending there
through and through said plate to receive and 60
direct nails into the heel toward said washers.
4. A device for nailing heels including a heel
ring, said heel ring having a cut-out therein to
receive and locate the heel in said ring, and
closure means extending over the bottom of said 65
cut-out, said means having guides upstanding
from the surface thereof and against and over
which guides the heel is adapted to be compressed,
the walls of the heel ring adjacent the cut-out
being of such thickness relative to the heel thick 70
ness that when the heel is uncompressed it will
extend above them, and such that when the heel
is compressed to their thickness, it will be forced
over the guides without lateral distortion, and
the unstretched surface thereof will extend ap 75
2,120,776
proximately to the surface of said means having
said guides upstanding therefrom.
5. In a device of the kind described, a heel ring
having a cutout portion therethrough to receive
and locate a heel, a groove in one surface of said
heel ring, a fastening means guide plate ñtting
3
within said groove, means detachably securing
said plate in said groove, and predeterminately
spaced nipples having holes therethrough immov
ably secured to said plate, each of said nipples
terminating in a relatively sharp head.
GLENN B. BRITTON.
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