U.S. patent number 3,710,485 [Application Number 05/188,230] was granted by the patent office on 1973-01-16 for one-piece slipper.
Invention is credited to Henry D. Irwin.
United States Patent |
3,710,485 |
Irwin |
January 16, 1973 |
ONE-PIECE SLIPPER
Abstract
A foot covering of the slipper or moccasin type formed from a
single sheet of pliable material comprising the entire sole and
upper, a forward fold of the sheet of material forming a sheath
adapted to receive the forward portion of a foot including the
instep and also forming a forward extension of the sheath resulting
in a tapered cap equal in length to approximately one-half the
length of the foot and terminating in a substantially pointed tip,
the fold having complementary edges at the shoe tip end and outer
aspect of the shoe united as a seam extending at sole level from
around the shoe tip and of the shoe to a point adjacent to the
portion of the shoe adapted to receive the ball of the foot and
then diagonally upward to the mouth of the shoe on the outer side
of the instep portion; a reinforcing tongue bridges the seam at the
mouth of the shoe and a first eared portion of triangular shape
extends rearwardly from the sheath and spanning the forward portion
of the mouth of the shoe; the sheet is also provided with a rear
fold which forms the heel receiving portion of the shoe and which
is closed at the rear end thereof by a continuous right-angled seam
having horizontal and vertical seam portions, the vertical seam
portion having a reinforcing tongue bridging its upper end, the
horizontal seam portion having a lower curved portion in extension
of the plane of the sole of the shoe defining an enlargement in the
lower rear portion of the shoe and constituting a heel-fitting
pocket, the rear fold having a second eared portion of triangular
shape extending above the heel at the rear of the shoe, the two
triangular eared portions being adapted to assist in pulling the
shoe onto the foot.
Inventors: |
Irwin; Henry D. (Bartlesville,
OK) |
Family
ID: |
22692276 |
Appl.
No.: |
05/188,230 |
Filed: |
October 12, 1971 |
Current U.S.
Class: |
36/11 |
Current CPC
Class: |
A43B
3/106 (20130101); A43B 23/042 (20130101) |
Current International
Class: |
A43B
23/04 (20060101); A43B 3/10 (20060101); A43B
23/02 (20060101); A43b 003/14 () |
Field of
Search: |
;36/11,46.5,10 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Claims
What is claimed is:
1. A slipper formed from a single sheet of pliable material
comprising the entire sole and upper, a forward fold of said sheet
of material forming a sheath adapted to receive the forward portion
of a foot including the instep, and also forming a forward
extension of said sheet resulting in a tapered cap equal in length
to approximately one-half the length of the foot and terminating in
a substantially pointed tip, said fold having complementary edges
at the tip end and outer aspect of the slipper united as a seam
extending at sole level from the tip to a point adjacent to the
portion of the slipper adapted to receive the ball of the foot and
then diagonally upward to the mouth of the slipper on the outer
side of the instep portion, a reinforcing tongue bridging the seam
at the mouth of the slipper, a first eared portion of triangular
shape extending rearwardly from said sheath and spanning the
forward portion of the mouth of the slipper, a rear fold of said
sheet forming the heel receiving portion of the slipper and being
closed at the rear end thereof by a continuous right-angled seam
having horizontal and vertical seam portions, the vertical seam
portion having a reinforcing tongue bridging its upper end, said
horizontal seam portion being a curved portion in extension of the
plane of the sole of the slipper and defining an enlargement in the
lower rear portion of the slipper constituting a heel fitting
pocket, said rear fold having an enlargement second eared portion
of triangular shape extending above the heel at the rear of said
slipper, said eared portions assisting the wearer in pulling said
slipper on and off the foot of the wearer.
2. A slipper as set forth in claim 1 including an insole member
having a pointed toe portion extending into said tapered cap.
Description
FIELD OF THE INVENTION
This invention relates to shoes or footwear and more particularly
to an improved foot covering of the moccasin or slipper type which
may be readily slipped on and off the foot and, when not in use,
may be folded for storage in a relatively small space.
THE PRIOR ART
One-piece slippers or moccasins are not new. U.S. Pat. No.
2,494,617 granted to Rose Hogan shows a one-piece foot covering of
the slipper type which can be readily slipped on and off the foot
and which can be collapsed or folded for packing in a small place.
The blank of the Hogan patent is adapted to be folded twice, a
first forward fold of the sheet of material forming a sheath
adapted to receive the forward portion of a foot including the
instep; the first fold provides complementary edges at the toe end
and at the outer aspect of the shoe united as a seam extending at
sole level from around the toe end of the shoe to a point adjacent
the portion of the shoe adapted to receive the ball of the foot,
then this same seam extends diagonally upward to the mouth of the
shoe on the outer side of the instep portion. This first seam in
the Hogan patent is provided with a reinforcing tongue bridging the
seam at the mouth of the shoe and a rear fold of material forming
the heel receiving portion of the shoe and being closed at the rear
end by a vertical seam having another reinforcing tongue bridging
its upper end. The seam for the rear fold is provided with a lower
curved portion defining an enlargement in the lower rear portion of
the shoe constituting a heel fitting pocket.
SUMMARY OF THE INVENTION
The present invention defines several improvements over the prior
art as typified by the above described Hogan patent. First of all,
the shoe or slipper of the present invention has a tapered cap
extending forwardly from the foot-enclosing sheath and terminating
in a substantially pointed tip. The resulting shape may remind the
observer of the type of slipper worn by the court jester in the
middle ages and, as such, the slipper of the present invention
presents a pleasing and attractive appearance. Secondly, the shoe
or slipper of the present invention is provided with two
triangularly shaped ears spanning the forward and rear portions,
respectively, of the mouth of the shoe for the purpose of assisting
the wearer in pulling the slipper onto the foot; these same ears
can also be employed by the wearer to assist in removing the
slipper from the foot. A third feature of the present invention
involves the shape of the heel receiving portion. In the Hogan
patent the rear seam is defined as a vertical seam having a curved
portion at its lower end; the curved portion of the seam in Hogan,
however, is formed by the uniting of two edges one of which is
straight and located on the portion of the shoe constituting the
sole, the other edge of which is curved and located on the vertical
portion of the shoe which forms the heel enclosing portion. In the
shoe of the present invention, the shapes of the last two mentioned
edges are reversed; that is, the curved edge is on the portion of
the shoe constituting the sole thereof and the straight edge is on
the rear vertical portion of the shoe which forms the heel
enclosing portion. The last-mentioned arrangement in the present
invention results in the heel receiving portion of the shoe being
closed at the rear end thereof by a continuous rightangled seam
which has horizontal and vertical seam portions, the horizontal
seam portion being defined as a lower curved portion in extension
of the plane of the sole of the shoe.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view of the shoe or slipper as it appears on the
wearer's left foot;
FIG. 2 is a plan view of the single unitary blank from which the
entire shoe or slipper is formed and showing a superimposed and
optional insole which can be used or not as desired;
FIG. 3 is a top view of the slipper as it appears when collapsed;
and
FIG. 4 is a side view of the collapsed slipper.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The foot covering, slipper, shoe or moccasin (however the wearer
wishes to refer to it) of the present invention is preferably made
of soft pliable leather such as kid or lamb skin with one suede
surface and the other smooth or finished, natural or died, or of a
similar synthetic material. The finished side of the material
preferably forms the outer surface of the foot covering. If
desired, an insole can be provided to give the foot covering
increased thickness and/or rigidity in the sole area.
Referring now to FIG. 1, the shoe is characterized by a forward
vamp portion 10 which forms a sheath over the transverse arch of a
wearer's foot and which extends rearwardly in triangular form to
provide an ear 12 which will assist the wearer in slipping on and
off the slipper. The rear portion of the shoe, which will be
described hereinafter in greater detail is provided with a
heel-encircling rear portion 14 which also includes an upwardly and
rearwardly extending triangular ear 16 which will also assist the
wearer in slipping the foot covering on and off the foot. The vamp
portion 10 is provided with a forward extension 18 which
constitutes a tapered cap or toe portion terminating in a pointed
tip 20. The vamp 10 is joined to the remaining or sole portion of
the slipper by means of a main seam 22 which extends all the way
from the tip 20 to a point 24 where the vamp 10 meets the mouth 25
of the shoe. More particularly, the main seam 22 extends at sole
level from the tip 20 to a point 26 adjacent the portion of the
slipper adapted to receive the ball of the foot and then diagonally
upward to the point 24 at the mouth of the shoe on the outer side
of the instep portion. A reinforcing tongue 28 bridges the main
seam at the mouth of the shoe.
The main seam 22 is preferably a side-to-side junction or lap joint
of the leather forming the upper and bottom portions of the
slipper. The adjacent portions of leather at the seam are joined
together by suitable stitching (not shown) and further stitching
(not shown) is provided on the reinforcing tongue 28.
Returning now to a consideration of the heel portion 14, it should
be mentioned that this heel portion extends on the sides towards
and to the vamp portion 10 where on one side of the shoe, as best
shown in FIG. 1, it mates with the vamp 10 along the diagonal
portion of the seam 22. The heel portion 14 is connected to the
remainder of the shoe by means of a continuous right angled seam
which is formed by a horizontal curved seam 30 and a vertical seam
portion 32. Bridging the upper end of the vertical seam portion 32
adjacent the mouth 25 is a reinforcing tongue or tab 34.
The foot of the wearer is shown in dotted lines in FIG. 1. When the
shoe is removed from the foot it can be folded flat as shown in
FIGS. 3 and 4.
Turning now to a consideration of FIG. 2, this figure shows a flat
blank of leather or other suitable material with reference numerals
thereon corresponding to the reference numerals in FIG. 1. The
point 24 which was referred to as the upper portion of the seam 22
appears on the left hand portion of the blank as 24a and at the
right hand portion of the blank 24b. Thus, the seam 22 is formed by
folding over the portion 10 towards and against the left hand
portion of the blank and providing continuous stitching from the
point 20 to points 24a and 24b which are now together forming
single point 24. Point 26 on FIG. 1 where the seam 22 begins to
take its diagonal direction appears on FIG. 2 as 26a on the left
hand portion of the blank and 26b on the right hand portion of the
blank.
The horizontal seam portion 30 in FIG. 1 is formed by stitching
together the edges 30a and 30b shown in FIG. 2. 30a is curved to
correspond with the curvature of the heel of the foot and 30b is
essentially straight so that, when these two complementary edges
are stitched together there will be a resulting horizontal seam
which will be curved and which will lie essentially in the plane of
the sole of the slipper. The vertical seam 32 is formed by
stitching together portions 32a and 32b shown in FIG. 2. The
reinforcing tab 34 will bridge the top of the vertical seam portion
32 on the outside of the slipper. The seam portions 30 and 32 can
be stitched as a single continuous seam if desired.
If it is desired to provide additional thickness and/or rigidity to
the sole of the shoe an insole member 36 may be secured to the
inside of the blank; however, the insole member 36 preferably is
provided with a pointed toe portion 38 to give additional thickness
and rigidity to the tapered cap portion 18.
In light of the above it will appear that the blank shown in FIG. 2
consists of a single elongated sheet of leather or other light
material (not considering the insole member 36) with irregular
opposed edges designed to be complementary when the material is
folded to bring them into proper juxtaposition to form both the
sole and the upper of the shoe. When this blank is of leather, it
should be cut so that the grain of the leather extends
longitudinally of the blank. Of course, where the optional insole
member 36 is employed, such a modification will involve another
piece of leather, but, the basic feature of the invention
nevertheless involves the formation of a pliable slipper from a
single piece of material and using only two seams to complete the
slipper. Not only is the foot covering self-conforming and
self-retaining by reason of the high vamp 10 in conjunction with
the heel-hugging rear end of the shoe, but also, the ears 12 and 16
will assist the wearer in pulling the slipper on and off the foot.
The slipper of the present invention also provides a unique tapered
cap extending forwardly from the vamp and terminating in a pointed
tip.
The present invention provides a light and comfortable slipper
which is at the same time simple and efficient and which will be
relatively inexpensive to reproduce. Whereas mention has been made
herein of stitching, it should be obvious that the seams can be
provided in other manners well known in the art. Furthermore, other
suitable materials could be employed in place of pliable
leather.
Whereas the present invention has been described in particular
relation to the embodiments shown in the drawings, it should be
obvious that other and further modifications, apart from those
shown or suggested herein, can be made within the spirit and scope
of this invention.
* * * * *