Improved Elastic Damp Resisting Slip Sole.
Year: 1898

page_text: Date of Application, 24th Oct., 1898-Accepted, 10th Dec., 1898
COMPLETE SPECIFICATION.
Improved Elastic Damp Resisting Slip Sole.
We, DANIEL EDWARD SMITII and FREDERICK WILLIAM SMITH, both of 183,
Hereford Street, Christchurch, in the Provincial District of Canterbury, in the
Colony of New Zealand, Boot Makers, do hereby declare the nature of our inven-
tion, and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
This invention relates to the manufacture of boots shoes and the like and pro-
vides an improved mid or slip sole.
The object of our invention is to provide a damp proof slip sole of a particu-
larly elastic nature, which can in making a boot be easily placed in position
between the insole and sole where it occupies the place of the "filling which
has usually hitherto consisted of felt or scrap leather.
"
Our slip sole is made of thin sheet india-rubber one surface of which has a
number of projecting studs or bosses formed by moulding or pressing out the
rubber while in a plastic condition.
The face of the india-rubber opposite to the projections is covered by a thin
sheet of leather or other similar material which is rather larger than the slip
sole to form what we term a welting strip."
The india-rubber is secured to the leather portion of the slip sole by rubber
cement well known to boot makers or by other usual means.
The main object of the leather is to keep the slip sole in position and in a
welted boot the stitches which secure the sole to the welt are also passed through
the leather "welting strip or outside edge of the slip sole.
"
In the case of pegged boots and where economy is particularly to be considered
the leather "welting strip" or outside edge portion of the slip sole may be dis-
pensed with in which case the remaining portion is held in position by pegs or
tacks.
In the accompanying drawings:-
Fig. 1. Is a plan, and
Fig. 2. An inverted plan.
Fig. 3. Is a section on line 3-3 Fig. 1.
The india-rubber slip sole (a) has moulded upon it the projections (b) which
make it exceedingly elastic under pressure of the foot.
The leather portion (c) is secured by cement and is larger than the india-rubber
portion so as to provide a welting strip (c) around the edges.
In practice the india-rubber portion of the slip sole is made to approximately
fit the space usually occupied by "filling" and the leather is fixed in contact
with the insole so that the studs upon the india-rubber project downwardly.
For hand sewn or machine welted boots it is not absolutely necessary for the
leather to completely cover the rubber portion of the sole, a strip of leather
to and projecting bevond the edges of the rubber will answer the

page_text: Having now particularly described our invention, and in what manner the
same is to be performed, we declare that what we claim is :-
1. An improved slip sole for boots and the like consisting of sheet india-rubber
one face of which has a sheet of leather cemented upon it and the other face
provided with a number of projecting studs or bosses substantially as and for the
purposes herein described and illustrated in the drawings.
2. A slip sole for boots and the like consisting of the combination of a sheet
of india-rubber having projections from one surface and a sheet of leather se-
cured upon the other, said leather extending beyond the edges of the india-rubber
to form a "welting strip" through which stitches are passed in fixing the slip
sole in position substantially as and for the purposes h rein described and illus-
trated in the drawings..
Dated this 29th day of August 1898.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents.