A Method of and Means for Treating Patent Leather and other Impervious Materials.
Year: 1897

page_text: Date of Application, 11th Mar., 1897
Complete Specification Left, 11th Jan., 1898—Accepted, 5th Mar., 1898
PROVISIONAL SPECIFICATION.
A Method of and Means for Treating Patent Leather and other
Impervious Materials.
I, CHARLES M. JOHNSON, of Broad Street House, Old Broad Street, in the City.
of London, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates firstly to a method of treating patent leather and other
impervious materials in such manner that the material shall have a certain and
desirable amount of porosity and secondly my invention relates to means for effect-
ing same.
My invention consists in producing in patent leather and other impervious
materials a number of minute holes or pores which do not detract in any way fromi
the appearance of the leather or the like. The holes may be made from either side
of the material or from both sides and further they may go right through or only.
partly through. They may be made previous to the finishing of the patent leather
or the like, or they may be made after the manufacture thereof.
A suitable means for effecting my invention consists in providing a roller or
plate with a number of fine points, and the leather or other material is either passed
under the roller aforesaid, or the plate with the points is caused to descend on the
material to be treated thereby making the artificial pores.
My invention is of special utility for treating for instance patent leather for
boots shoes and the like, because such articles being generally practically impervious
to air do not allow of proper ventilation. The result is that the leather in time
becomes perished, whereas if a number of minute holes be made in the boot or shoe
there is sufficient ventilation to prevent the rapid destruction of the leather.
By my invention the leather being provided with minute holes or pores it is
practicable to keep the leather soft and pliable by applying a dressing which is
absorbed through the holes aforesaid.
1037
A Method of and Means for Treating Patent Leather and other
Impervious Materials.
I, CHARLES M. JOHNSON, formerly of Broad Street House, Old Broad Street, in
the City of London, but now of No. 22, Laurence Pountney Lane, in the city afore-
said, Engineer, do hereby declare the nature of this invention and in what manner
CD 077

page_text: the same is to be performed to be particularly described and ascertained in and by
the following statement:—
My invention consists in producing in patent leather and other impervious
materials a number of minute holes or pores which do not detract in any way from
the appearance of the leather or the like. The holes may be made from either sido 5
of the material or from both sides and further they may go right through or only
partly through. They may be made previous to the finishing of the patent leather
or the like or they may be made after the manufacture thereof.
Figure 1 of the accompanying drawings is a diagram of one means for carrying
out my invention and
Figure 2 is a perspective view of a modification.
1
A suitable means is shewn in Figure 1 for carrying out my invention and it
consists in providing a roller a with a number of fine points such as needle points b.
This roller is suitably mounted and the leather or other material is either passed
under same or the roller is caused to travel over the leather making a great number 1
of very fine holes. Or if desired and as shewn in Figure 2 there is a block or
plate al having a number of fine points which caused to descend for instance on
to the material to effect the perforation of the leather to the required extent. In
n word the effect to be obtained is to make in the leather what amounts to a number
of artificial pores.
My invention is of special utility for treating, for instance, patent leather for
hoots, shoes and the like because such articles being generally practically im-
pervious to the air do not allow of proper ventilation. The result is that the leather
in time becomes perished, whereas if a number of minute holes he made in the boot
or shoe there is sufficient ventilation to prevent the rapid destruction of the leather.
By my invention the leather being provided with minute holes or pores, it is
practicable to keep the leather soft and pliable by applying a dressing which is
absorbed through the holes aforesaid.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. The process for treating patent leather or other impervious material consist-
ing in providing it with a number of small holes or artificial pores substantially as
set forth.
2. The process for treating patent leather or other impervious material consist-
ing in providing it with a number of small holes or artificial pores on both sides
substantially as set forth.
3. The process for treating patent leather consisting in providing the hair side
thereof with a number of small holes or artificial pores substantially as set forth.
4. The process for treating patent leather consisting in providing the flesh side
thereof with a number of small holes or artificial pores substantially as set forth.
5. Apparatus for making a number of small holes or artificial pores in patent
leather or other impervious material consisting of a roller studded with a number
of fine points.
6. Apparatus for making a number of small holes or artificial pores in patent
leather or other impervious material consisting of a block studded with a number
of fine points.
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