A new method of manufacturing blasting powder by sawing pieces of strongly pressed nitrated cellulose
Year: 1884

page_text: I, WILLIAM EDWARD GEDGE of No 11 Wellington Street, Strand, London, in tho,
County of Middlesex, Patent Agent seek leave to amend the specification of Letters
Patent, No. 13,522 of 1884, as shown in red ink in the copy of the original.
specification hereunto annexed :-
'
By striking out the whole of the Claims as now presented and substituting
therefor
"A new method of manufacturing blasting powder by sawing pieces of strongly
pressed nitrated cellulose."
My reasons for making this amendment are as follows:--I desire to limit the
claim to a method of reducing the material to powder by sawing.

page_text: In the matter of an application by William Edward Gedge for leave to amend
the Specification of Letters Patent No 13,522 dated 13th October 1884.
I hereby grant leave to the said William Edward Gedge to amend the said
Specification in the manner proposed.
Dated. this 16th day of April 1885.
HREADER LACK;
Comptroller General.

page_text: I WILLIAM EDWARD GEDGE, of N° 11 Wellington Street, Strand, London, in
the County of Middlesex, Patent Agent do hereby declare the nature of my
invention for IMPROVEMENTS IN THE MANUFACTURE OF BLASTING-POWDER FROM
NITRATED CELLULOSE and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
Finely divided wet nitro-cellulose is pressed by means of hydraulic or other
strong presses into thin plates, or blocks of compressed nitro cellulose are cut into
such plates. The wet plates are sawn into strips, the strips into grains. The
strips and grains may also be stamped out of the plate. In lieu of wet compressed
nitro-cellulose throughout, paraffined dry compressed nitro-cellulose may be applied,
or in general dry compressed nitro-cellulose as far as such an operation may be
possible without danger.
The obtained grains may be evated by immersing them in a solvent of the
Nitro-cellulose, such as acetic spirit, nitro-benzolo and the like, or into liquid
paraffine, and thus be secured against crumbling and becoming dust.
The principal advantage of this method consists in that the obtained powder
being produced from strongly compressed plates, in consequence thereof the single
grains have a high specific gravity and in general a high cubic gravity.
The effect of this powder is similar to that of compressed gun cotton in large
pieces.
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:-
4. A new method of manufacturing blasting powder, consisting in dividing-inte
grains strongly pressed plates made from nitrated-cellulose.
9. Blasting powder-composed of the materials-as-set forth.
A new method of manufacturing blasting powder by sawing pieces of strongly
pressed nitrated cellulose.

page_text: I WILLIAM EDWARD GEDGE, of. No 11 Wellington Street, Strand, London, in
the County of Middlesex, Patent Agent do hereby declare the nature of my
invention for IMPROVEMENTS IN THE MANUFACTURE OF BLASTING-POWDER FROM
NITRATED CELLULOSE and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
Finely divided wet nitro-cellulose is pressed by means of hydraulic or other
strong presses into thin plates, or blocks of compressed nitro cellulose are cut into
such plates. The wet plates are sawn into strips, the strips into 'grains. The
strips and grains may also be stamped out of the plate. In lieu of wet compressed
nitro-cellulose throughout, paraffined dry compressed nitro-cellulose may be applied,
or in general dry compressed nitro-cellulose as far as such an operation inay be
possible without danger.
The obtained grains may be evated by immersing them in a solvent of the
Nitro-cellulose, such as acetic spirit, nitro-benzole and the like, or into liquid
paraffine, and thus be secured against crumbling and becoming dust.
The principal advantage of this method consists in that the obtained powder
being produced from strongly compressed plates, in consequence thereof the single
grains have a high specific gravity and in general a high cubic gravity.
The effect of this powder is similar to that of compressed gun cotton in large
pieces.
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. A new method of manufacturing blasting-powder, consisting in dividing into
grains strongly pressed plates made from nitrated-cellulose.
2. Blasting-powder composed of the materials as set forth.