Improvements in or relating to the Waterproofing of Leather or Pulp Boards and the like.
Year: 1890

page_text: Date of Application, 26th Nov., 1890
Complete Specification Left, 6th Mar., 1891-Accepted, 4th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Waterproofing of Leather or
Pulp Boards and the like.
I, CHARLES LUCAS LAWRENCE, Manufacturer of Grease Proof Parchment,
used by Boot Manufacturers, 36, Gray Street, The Newarks, Leicester, do hereby
declare the nature of this invention to be as follows:-
:―
This invention has for its object improvements in or relating to the waterproofing
of leather or pulp boards and the like either in the sheet or cut out in blanks or
soles and particularly refers to the treatment of pulp or leather boards used for the
manufacture of boots or shoes to render them impervious to damp and make them
waterproof by putting them through a solution of parafine wax and benzoline and
of the aforesaid is then immediately passed over hot plates or through hot air or
steam cylinders.
Deted thin the 25th day of November 1890
COMPLETE SPECIFICATION.
Improvements in or relating to the Waterproofing of Leather or
Pulp Boards and the like.
I, CHARLES LUCAS LAWRENCE, Manufacturer of Grease Proof Parchment
used by Boot Manufacturers, of No. 36, Gray Street, The Newarke, Leicester, in
the County of Leicester, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention has for its object improvements in or relating to the waterproofing
of leather or pulp boards and the like either in the sheet; or after it has been cut
out into blanks or soles, and particularly refers to the treatment of pulp or leather
boards used in the manufacture of boots or shoes to render them impervious to
damp and make them waterproof by putting them through a solution of paraffine
wax and benzoline. Any of the aforesaid is then immediately passed over hot
plates, or through hot air or steam cylinders.
That my invention may be well understood I have annexed a sheet of drawings
showing a set of steam or hot air cylinders and tanks in section, Figure 1, and a
sectional end view of a drying tank, Figure 1º, hereinafter fully described.
To carry out my invention I prepare a solution of one part benzoline to one
twentieth part of paraffine wax, or thereabouts, dissolve and then put into any
ordinary supply tank or steam jacket such as A, which is suitably connected to the
soaking tank B, which is made of a size to receive the sheets of leather board, mill
board or the like C, which is laid in the solution 6, therein, supplied to the tank
" to the
by ladling out of the tank A, or I may connect a shut off tap "not shown
tanks for this purpose. The steam enters the tank A by the connecting pipe and
tap a', from any convenient supply and is conveyed to the other tanks through
the T connection and shut off tap D, or its equivalent; to avoid an over pressure
of steam a², in any of the tanks, suitable pressure valves of any well known sort may
be inserted at a³. When the sheets C, are saturated they are taken out and passed
through the hot air or steam cylinders or rollers E and F, which are heated
through the pipe e and f, entering through the hollow spindle 2 and 2, suitable
connections being applied from any suitable steam or hot air supply, a flanged
017

page_text: tray G, is secured under the roller E, so that the solution squeezed out of the
sheet C, when under pressure, passes again into the tank B, the cylinder F is held
pressed by springs f³, tensioned by the hand wheels f, or C springs may be
employed if desired.
The rollers or cylinders being revolved by the gears H and I, from the fast and
loose pulleys and h², an outlet to the tanks is provided b², to let off the residue of
the solution when not further required.
In place of the hot air or steam rollers I may only use the drying steam jacketted
tank J, into which the sheets C, may be transferred to dry, this tank may or may
not be provided with the cover to shut down over the sheets in the drying
chamber. Or hot plates of any well known kind may be used and the sheets C,
passed over them, or they may be put between hot plates or beds such as ordinary
hose or shirt presses, the beds being heated by steam, of any well known make of a
size suitable for the purpose.
It will be well understood that the leather or pulp boards and the like may be
first cut out into sole blanks before waterproofing if desired.
The same means being adopted as hereinbefore described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
Waterproofing leather or pulp boards and the like, and blanks or soles of same
in solution, substantially as herein set forth.
Dated this 3rd day of March 1891.
CHARLES LUCAS LAWRENCE,
Applicant.