AN IMPROVED Dameron ORDRAN
Year: 1870

page_text: LETTERS PATENT to John Tyndale Greenfield, Lieutenant in the
Royal Regiment of Artillery, residing at 10, Pencester Street,
Dover, in the County of Kent, for the Invention of "AN IMPROVED
Dameron
ORDRAN”
PROVISIONAL SPECIFICATION left by the said John Tyndale Green-
field at the Office of the Commissioners of Patents, with his Petition,
on the 9th February 1870.
I, JOHN TYNDALE GREENFIELD, Lieutenant in the Royal Regiment of
5 Artillery, residing at 10, Pencester Street, Dover, in the County of
Kent, do hereby declare the nature of the said Invention for “As
IMPROVED SIDE ARM FOR CLEARING THE CHAMBERS AND RIFLING OF ORDNANCE,"
to be as follows:
This Invention is designed to supersede the sponge and searchers at
present employed for clearing the chambers and rifling of ordnance,
and which have been found very defective in practice, and consists in

page_text: substituting in lieu thereof an implement or side arm which shall
perform the double office of sponge and searcher. The principle I have
sought to attain is to so construct an implement that it shall enter the
bore of the gun at low guage, and withdraw high guage so as to get
behind and lay hold of any portions of unburnt cartridge case that
may be at the bottom of the chamber or breech of the gun, and bring
it out lighted or not, clear of the muzzle of the gun.
The improved side arm or implement above referred to consists of a
brush made of coir (or bass) let into a drum of wood similar to that
of the present sponge head; the bristles are set helically around the
said drum so that they have a lay or incline all in one direction hori-
zontally. I also propose to form the hinder part of the brush head
smaller in diameter than the fore part thereof, and have the bristles
longer than those that are in front for the purpose of enabling the
longer bristles to sweep well into the deep grooving of rifled guns.
The effect of an implement of the above construction is as follows:-
When inserted into the bore of a gun it moves home very easily by
reason of the bristles being compressible, but when pushed home and
supposing the said bristles all to incline to the right by turning the
brush in the same direction as the lay of the bristles they will be set!
up or raised, and thus brought into close contact with the chamber or
breech of the gun and sieze hold of any substance adhering thereto,
and the act of withdrawing the said brush and giving a gentle türn to
the stave sets the bristles still more erect, causing them to scrape the
whole periphery of the bore of the gun, and keeping in their grip and
withdrawing any loose substance the bristles may have come into
contact with. By the use of an implement of the above construction
I am enabled to keep the gun clean and free from all substances that
might catch fire at the next round or foul the gun and cause miss-
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Tyndale Greenfield in the Great Seal Patent
Office on the 9th August 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
TYNDALE GREENFIELD, Lieutenant in the Royal Regiment of Artillery, 3
residing at 10, Pencester Street, Dover, in the County of Kent, send
greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of February, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Tyndale Greenfield, Her. special
licence that I, the said John, Tyndale Greenfield, my executors, adminis-
trators, and assigns, or. such others as I, the said. John Tyndale-Green-
field, my executors, administrators, and assigns, should at any time:
agree with, and no others, from time. to time and at all times there..
after during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "AN IMPROVED SIDE ARM FOR CLEARING THE CHAMBERS AND Ripling
OF. ORDNANCE," upon the condition (amongst others) that I, the said.
John Tyndale Greenfield, my executors or administrators, by,.an. instru--
ment in writing under my, or their, or one of their hands and scals,
should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was, to be performed, and cause
the same to be. filed in the Great Soal Patent Office within six
calendar months next and immediately after the date of the said Letters.
Patent.
1
NOW KNOW YE, that I, the said John Tyndale Greenfield, do hereby.
declare the nature of the said Invention, and in what manner the samo
is to be performed, to be particularly described and ascertained in and by
the following statement, that is to say :―
This Invention is designed to supersede the sponge and searchers at
present employed for clearing the chambers and rifling of ordnance, and
which have been found very defective in practice, and consists in sub-
stituting in lieu thereof an implement or side arm which shall perform
the double office of sponge and searcher. The principle I have sought
to attain is to so construct an implement that it shall enter the bore of
the gun at low guage and withdraw high guage, so as to get behind and
lay hold of any portions of unburnt cartridge case that may be at the
bottom of the chamber or breech of the gun and bring it out lighted or
not, clear of the muzzle of the gun.
The improved side arm or implement above referred to consists of
a brush made of coir (or bass) let into a drum: of wood, similar to
that of the present sponge head. The bristles are set helically around

page_text: the said drum so that they have a lay or incline all in one direction
horizontally. I also propose to form the hinder part of the brush head
smaller in diameter than the fore part thereof, and have the bristles
longer than those that are in front for the purpose of enabling the
longer bristles to sweep well into the deep grooving of rifled guns.
-
The effect of an implement of the above construction is as follows:-
When inserted into the bore of a gun it moves home very casily by
reason of the bristles being compressible, but when pushed home and
supposing the said bristles all to incline to the right by turning the
brush in the same direction as the lay of the bristles they will be set up
or raised, and thus brought into close contact with the chamber or
breech of the gun and seize hold of any substance adhering thereto, and
the act of withdrawing the said brush and giving a gentle turn to the
stave sets the bristles still more crect, causing them to scrape the whole
periphery of the bore of the gun and keeping in their grip and with-
drawing any loose substance the bristles may have come into contact
with.
By the use of an implement of the above construction I am enabled
to keep the gun clean and free from all substances that might catch
fire at the next round or foul the gun and cause miss-fire.
And in order to explain this Invention more completely I now proceed
to describe the construction of the side arm above referred to, reference
being had to the Drawing hereunto annexed, and to the numeral figures
and letters of reference marked thereon as follows:-
DESCRIPTION OF THE DRAWING.
Figure 1 represents an elevation of a sido arm or implement for
clearing the chambers and bore of smooth and rifled ordnance, and as
it would appear when ready for uso; Figure 2 is an elevation of the
foundation into which the bristles are fixed. The same letters of
reference denote corresponding parts at each of the said Figures.
A marks a piece of wood similar to an ordinary sponge head or
implement used for sponging ordnance. The head or top part B of the
piece A has bundles of bristles C of coir (or bass) fixed thereinto with
marine glue by preference. The said bristles, which are fixed around
and about the part B, as shewn by the Drawing at Figure 1, are all
inclined or laid in one direction. The bristles at the part B between a
and incline slightly upwards as well as sideways to enable them to

page_text: search and clear the chamber or breech of the gun. The bristles D,
which are also inclined in the same direction, are arranged horizontally
or nearly so around the lower part of B, and those bristles marked E aro
arranged helically as well as inclined horizontally about the smaller part
or barrel of the piece A, and are longer than the bristles D that they
may search and clear the rifling of rifled ordnance. G is a portion of
the stave or handle fixed into A, the length of the said stave being in
proportion to the length of the gun.
In order to insert and force home this implement easily in the borc of
a gun the same may be done by giving it a slight turn to the left hand,
and when quite home by giving the implement a slight turn to the right
the bristles will be raised or set up and seize hold of any loose substance
that may be in the gun as above stated.
Having now fully described and set forth the nature and object of
my said Invention for "An Improved Side Arm for Clearing the
Chambers and Rifting of Ordnance,” together with the best means I am
acquainted with for carrying the same into practical effect, I would
remark in conclusion that what I claim as my Invention and desire to
secure by the herein-before in part recited Letters Patent is, constructing
a brush with bundles of bristles all inclining or leaning in one direction
around the foundation of the said brush, so that when the brush is
pushed home into a gun and a slight turn is given to it in the same
direction as the bristles lay or incline the said bristles shall be sufficiently
raised to come into forced contact with the bore and rifling of the
and seize hold of and remove any loose substance that may be in the
gun, as above described and represented.
gun
In witness whereof, I, the said John Tyndale Greenfield, have
hereunto set my hand and seal, this Fourth day of August,
in the year of our Lord One thousand eight hundred and
seventy.
JOHN TYNDALE GREENFIELD, (L.S.)
Lieutenant Royal Artillery.