U.S. patent number 3,727,330 [Application Number 05/132,848] was granted by the patent office on 1973-04-17 for multi-color shoe sole blanks.
This patent grant is currently assigned to Carl Freudenberg. Invention is credited to Walter Hoche.
United States Patent |
3,727,330 |
Hoche |
April 17, 1973 |
MULTI-COLOR SHOE SOLE BLANKS
Abstract
A shoe sole blank of synthetic material is produced by applying
a brown color layer to a sheet of synthetic material, applying
another coat of black color layer over the brown, the black being
of limited abrasion-resistance, stamping shoe sole blanks out of
the sheet, and selectively abrading away the black layer from the
central portion of the blank corresponding to the ball of the foot.
Skeletal traces of the black color layer may remain even in said
central portion. The resulting blank has a pleasing two-tone
appearance and even simulates the grainy texture of leather in said
central portion.
Inventors: |
Hoche; Walter
(Weinheim/Bergstrabe, DT) |
Assignee: |
Carl Freudenberg (Weinheim,
DT)
|
Family
ID: |
6611909 |
Appl.
No.: |
05/132,848 |
Filed: |
April 9, 1971 |
Foreign Application Priority Data
|
|
|
|
|
May 27, 1970 [DT] |
|
|
G 70 19 747.6 |
|
Current U.S.
Class: |
36/32R;
D2/951 |
Current CPC
Class: |
A43B
13/12 (20130101); A43B 13/04 (20130101) |
Current International
Class: |
A43B
13/12 (20060101); A43B 13/02 (20060101); A43B
13/04 (20060101); A43b 013/06 () |
Field of
Search: |
;36/3R,32R,30,32
;12/79.5 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Guest; Alfred R.
Claims
What is claimed is: 5.
1. A punched out shoe sole blank comprising a blank body of
synthetic material, a first abrasion-resistant colored coating on
its outer surface, and a second colored coating of limited
abrasion-resistance superimposed over said first coating, said
second coating being of different color than siad first
coating.
2. A shoe sole blank according to claim 1, wherein said first
colored coating has an uneven outer surface, whereby upon brushing
the outer surface of said coated blank said second coating is
removed except for traces in the depressed portions of said first
colored coating, said traces imparting a grain-like appearance
thereto.
3. A shoe sole blank according to claim 1 wherein said second
coating is substantially absent from the central portion
corresponding to the ball of the foot.
4. A shoe sole blank according to claim 3, wherein said second
coating is present in the central portion in trace amounts
imparting a grain-like appearance thereto.
5. A shoe including an upper and a treadsole, said sole comprising
a body of synthetic material, a first abrasion resistant colored
coating on its outer surface, and a second colored coating of
limited abrasion-resistance superimposed over said first coating,
said second coating being of different color than said first
coating.
6. A shoe according to claim 5, wherein said second coating is
substantially absent from the central portion corresponding to the
ball of the foot.
Description
The present invention relates to the production of multi-color shoe
sole blanks.
It is known to punch out soles from single-color rubber slabs. It
is also known to print a color design on the sole slab. Subsequent
to punching out a sole, the joint section was dyed black for
further improvement, possibly also the edge of the walking surface.
However, this process is time-consuming.
It is an object of the invention to provide a shoe sole blank,
formed of synthetic material, with an attractive color pattern in a
simple, inexpensive manner.
This and other objects and advantages are realized in accordance
with the present invention wherein to a sheet or slab of synthetic
material such as synthetic rubber there is applied a first layer of
color, e.g. brown, in usual fashion and of usual composition. Over
this first coating there is applied a second layer of different
visual appearance, e.g. of different color such as black or of
different pattern. The second layer is of lesser abrasion
resistance than said first layer. Shoe sole blanks are then punched
out of the sheet in conventional manner and in the central portion
corresponding to the sole of the shoe blank the blank is subjected
to abrasion so as to remove the second layer and expose the first
layer. Skeletal traces of the second layer are frequently still
visible in the exposed area, depending upon the extent of
intermingling of the layers and the extent of abrasion, giving a
grainy leather-like appearance. This can be enhanced, if desired,
by actually printing a leather-like grain pattern as the first
color layer or by forming the initial sheet material with a special
texture on its surface.
The invention is illustrated in the accompanying drawing which is a
photographic reproduction of a shoe sole blank in accordance with
the invention.
While the first layer is preferably brown and the second layer is
black, other color combinations are possible and either or both
layers can be patterned, e.g. printed, rather than being a solid
color.
The shoe sole blank can then be combined in conventional manner
with an upper and a heel to form a shoe. If desired, the abrasion
of the second layer can be effected after formation of the shoe or
possibly even before punching out of the blank from the initial
sheet or slab. Optionally, the blanks are first punched out and
thereafter colored. While the second layer is preferably less
abrasion-resistant than the first to facilitate achieving the
desired color effect, even if not less resistant it will obviously
come away first since it overlies the first layer; in such event,
however, greater care will be required to avoid removing the first
layer as well. If desired, the abrasion can be effected over a
smaller or greater portion than only that illustrated herein.
It will be appreciated that the instant specification has been set
forth by way of illustration and not limitation and that various
modifications and changes may be made without departing from the
spirit and scope of the present invention.
* * * * *