An Improvement in the Manufacture of Granulated Wood, applicable for Surgical Dressings.
Year: 1895

page_text: Date of Application, 18th July, 1895
Complete Specification. Left, 17th Apr., 1896-Accepted, 23rd May, 1896
i
[Communicated from abroad by PAUL HARTMANN, of Heidenheim, Wurtemberg,
in the Empire of Germany.]
An Improvement in the Manufacture of Granulated Wood, applicable
for Surgical Dressings.
1, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention to be as follows:-
This invention relates to the manufacture of granulated wood such as is employed
for surgical dressings, in such a manner as to obtain the material in an even,
regular condition, without particles so fine as to constitute dust, and without
pieces too large.
For this purpose, wood pulp or cellulose in a moist condition is treated in a
rapidly revolving centrifugal machine, in the drum of which it forms an even
coherent and nearly dry layer at the circumference. This layer is removed in
lumps which are completely dried and broken into smaller pieces. These pieces
then are passed through a disintegrating machine such as that known as Carr's
Disintegrator several times if necessary. The product dessicated is a granulated
wood material very suitable for surgical dressings with or without impregnation
with antiseptic or other chemicals.
In many cases it is of advantage to combine the granulated wood with cotton
wool so as to form a compound dressing material. For this purpose the dry
granulated wood is fed on to a travelling apron from which it is swept by a
revolving brush into the space between the main cylinder of a carding engine
and the doffing cylinder, so as to become mixed up with the cotton sliver as it
is doffed.
Dotad tie 18th day of Tul.. 1905
ABEL & IMRAY,
Agents for the Applicant.
An Improvement in the Manufacture of Granulated Wood, applicable
for Surgical Dressings.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane in the
County of London, Chartered. Patent Agent, do hereby declare the nature of this
invention 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 granulated wood such as is employed
for surgical dressings, in such a manner as to obtain the material in an even,
regular condition, without particles so fine as to constitute dust, and without
pieces too large.
For this purpose, wood pulp or cellulose in a moist condition is treated in a
rapidly revolving centrifugal machine, in the drum of which it forms an even

page_text: coherent and nearly dry layer at the circumference. This layer is removed in
lumps which are completely dried and broken into smaller pieces. These pieces
then are passed through a disintegrating machine such as that known as Carr's
Disintegrator, several times if necessary. The product dessicated is a granulated
wood material very suitable for surgical dressings with or without impregnation
with antiseptic or other chemicals.
In many cases it is of advantage to combine the granulated wood with cotton
wool so as to form a compound dressing. material. For this purpose the dry
granulated wood is fed on to a travelling apron from which it is swept by a
revolving brush into the space between the main cylinder of a carding engine
and the doffing cylinder, so as to become mixed up with the cotton sliver as it
is doffed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The herein described manufacture of granulated wood applicable for surgical
ABEL & IMRAY,
Agents for the Applicant.