An Improved Tool or Implement for Removing Damaged Cartridge Cases from the Barrels of Fire-arms.
Year: 1887

page_text: Date of Application, 19th Oct., 1587
Complete Specification Left, 18th July, 1888
Complete Specification Accepted, 31st Aug., 1888
PROVISIONAL SPECIFICATION.
An Improved Tool or Implement for Removing Damaged Cartridge
Cases from the Barrels of Fire-arms.
I, JOHN ADAMS NORTON, Director and General Agent of the Gardner Gun Co.,
of 49 Curtain Road, in the County of Middlesex, do hereby declare the nature of
this Invention to be as follows:-
My Invention relates to tools or implements for extracting damaged or broken
metallic cartridge cases from the barrels of breech loading fire-arms.
One of the tools or implements hitherto used for the above purpose consists of a
mandrel made of steel or any other suitable material, a portion of the said mandrel
being turned down and screw threaded so as to form a plug tap with a very fine
thread, of the size required to cut a slight thread upon the inside of the neck of the
damaged metallic cartridge case and thus to engage or fix the mandrel therein. The
above described mandrel is also provided with a hexagon or other shaped head and a
suitable wrench or key for operating the same. This wrench or key is necessarily
detached from the mandrel and is liable to be mislaid or lost, and moreover does not
afford any firm hold wherewith to withdraw the said mandrel and the damaged or
broken metallic cartridge case.
The main object of my said Invention is to obviate the above defects by providing
a wrench or key for the above described mandrel or damaged metallic cartridge case
extractor by means of which the latter can be operated without removing the said
wrench or key.
My improved tool or implement comprises a mandrel as hereinbefore described
having at one end either a plug or a taper tap, and provided at the other end with a
lever or handle having a pawl adapted to engage in a ratchet wheel upon the mandrel.
By means of this arrangement the said mandrel can be operated without removing the
lever or handle.
A modification of my Invention consists in constructing the above described lever
or handle in such a manner as to allow of its being shifted to and fro upon a portion
of the mandrel suitably arranged for that purpose and provided with a collar or some

page_text: other means for preventing the lever or handle from leaving the head of the mandrel.
Thus by reciprocating the said lever or handle sharply against the collar or other
abutment after the plug or taper tap on the mandrel or metallic cartridge case
extractor is properly engaged in the damaged or broken case to be removed, it can be
readily started, and the necessity for striking the lever or handle with a piece of wood
or other material for that purpose is obviated.
Another modification of my Invention consists in constructing the hereinbefore
described mandrel with two parts or portions of different sizes, each having a fine screw
thread cut upon it thus forming two taps adapted to engage in both the neck and the
powder chamber of the damaged or broken metallic cartridge case at one and the
same time.
My improved mandrel is sometimes provided with a shoulder to prevent its being
so far inserted in the barrel as to permit injury to the chamber or rifling of the said
barrel by the screw threads on the mandrel.
D
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: An Improved Tool or Implement for Removing Damaged Cartridge-
cases from the Barrels of Fire-arms."
1, JOHN ADAMS NORTON, Director and General Agent of the Gardner Gun Company
of 49 Curtain Road, in the County of Middlesex, 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:-
My invention relates to tools or implements for extracting from the barrels of
breech-loading fire-arms, cartridge-cases the heads of which have been torn off or
which have been otherwise damaged so that they cannot be withdrawn by means of
the ordinary extractor.
One of the tools or implements hitherto used for this purpose consists of a mandrel
made of steel or other suitable material having a portion reduced in diameter and screw-
threaded so as to form a plug-tap with a very fine thread, of the size required to cut a
slight thread upon the inside of the neck of the damaged cartridge-case and thus engage
therewith and fix the said mandrel therein. The above described mandrel is also
provided with a hexagon or other shaped head and a suitable wrench or key for
operating the same. This wrench or key is detached or formed separately from the
mandrel, and is therefore liable to be mislaid or lost, moreover it does not afford a
firm hold wherewith to withdraw the said mandrel and the damaged cartridge-case.
My invention is designed to obviate the above defects and to provide an improved tool
or implement which can be operated without a separate or detached wrench or key.
In the accompanying drawing
Figure 1 is a side elevation partly in section, and
Figure 2 a front elevation, a screw and collar being removed, showing one form of
my improved tool or implement.
о
Figure 3 is a side elevation showing another form or modification thereof.
Like letters indicate corresponding parts throughout the drawing.
A is a rod or mandrel of steel or other suitable metal. B is a handle or lever for
operating the same as hereinafter described.
The rod or mandrel A has the portion a thereof reduced to a smaller diameter than
that of the main portion so as to form a shoulder a¹. The portion a is, moreover,
screw-threaded at hand is provided with grooves . The screw-threaded portion b is
preferably formed slightly taper and is somewhat similar to a taper tap with a very
fine thread. The said screw-threaded portion is of suitable dimensions to engage with
the damaged cartridge-case which it is desired to extract.
The mandrel A is provided with ratchet-teeth c, over which is fitted the socket d of
the handle or lever B. The handle or lever B, is, moreover, provided with a recess e
in which is fitted a pawl facted upon by a spring g, whereby it is caused to engage
with the said ratchet-teeth c. The handle or lever B is retained in position by means
of a screw having a collar 1. The said screw is preferably provided with a left-
banded thread. When the screw-threaded portion of the mandrel A is inserted into

page_text: -
a damaged cartridge-case, it engages with the same forward of the powder-chamber
thereof the shoulder a, however, prevents the insertion of the said screw-threaded
portion far enough into the gun-barrel to damage or injure the chamber or rifling
of the said barrel. In some cases I provide a collar upon the mandrel for the same
purpose.
In the modification of my invention shown in Figure 3, the reduced portion a of
the mandrel A is made to correspond in shape or configuration with the chamber of
the gun and is screw-threaded at b, and at b2 so that it will engage with both the neck
and the powder-chamber of the damaged cartridge-case.
Although I have hereinbefore described convenient and advantageous methods of
carrying my invention into practice, it is obvious that I can somewhat further modify
the construction of my improved tool or implement without departing from the nature
of my said invention.
For instance, I can so construct the lever or handle B as to allow of its being
reciprocated to and fro upon a portion of the mandrel, the latter being made square
or of any other suitable shape for that purpose, and provided with a collar or other
suitable means for preventing the said lever or handle from leaving the head of the
mandrel. By reciprocating the said lever or handle and causing the same to strike
sharply against the collar or other abutment after the screw-threaded portion or
portions of the mandrel become properly engaged in the damaged or broken metallic
or other cartridge-case which it is intended to remove the said case can be readily
started, and any necessity for striking the lever or handle with a piece of wood or
other material for that purpose is obviated. I can, moreover, if desired make the
lever or handle so that it extends on both sides of the rod or mandrel,
Having now particularly described and ascertained the nature of any said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
The improved tool or implement comprising the screw-threaded mandrel (with or
without the shoulder or collar) and the handle or lever secured thereto and connected
therewith by a ratchet and pawl, substantially as hereinbefore described for the
purpose specified
Dated this 18th day of July 1888.
JOHN ADAMS NORTON.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.