A NEW OR IMPROVED INSTRU- MENT OR APPARATUS FOR EXTRACTING THE FIRED CAPSULES FROM RIFLE CARTRIDGE CASES AND FOR REPRIMING THEM
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by Chevalier Armand Wurmb at the
Office of the Commissioners of Patents on the 29th March 1878.
18
Chevalier ARMAND WURMB, of Nordmünster, Austria, at present) of 16, South-
ampton Buildings, in the County of Middlesox. A NEW OR IMPROVED INSTRU-
MENT OR APPARATUS FOR EXTRACTING THE FIRED CAPSULES FROM RIFLE CARTRIDGE
CASES AND FOR REPRIMING THEM."
This Invention relates to a new or improved instrument or apparatus for
extracting the fired capsulos from rifle cartridge cases and for repriming thein.
According to my Invention I take a tube or cylinder of an internal diameter,
suitable to the size of cartridge case to be operated upon by the instrument. This
tube is used in an upright position, and is intended to hold the case whilst being
reprimed. It has a countersunk concentric recess at its upper end to receive the
flange of the case, so that the latter may drop in flush with the top of the tube.
The tube is also clongated downwards and provided at its lower end with a loose
fitting plunger which normally rusts at its lowest position, but on being struck
upwards ejects the cartridge case from the tube. On each of two opposite sides of
the said tube is an eye, to one of which is pivoted the extractor, and to the other or
opposite one the reprimer.
The extractor is formed of a compound lever. The upper portion of this lever,
which is pivoted on to the eye of the central tube, is of such length at its inner
portion that the extremity thereof can be turned or brought on to the cartridge
case in the tube. This portion also carries pistonwise a lance, in such a position
that when the lever is turned on to the cartridge case and the lance pressed forward
the latter will pierce and enter the capsule in the centre thereof.
The lower part of the compound lever or extractor is pivoted to the upper part
already described in such a manner, that over a space limited by lateral flanges it
can rock in relation to the upper portion in the direction of the up-and-down
motion of the whole lever extractor. The outer of the said lateral flanges abuts
against the rear end of the said piston lance, which is held back or inwards by a
surrounding helical spring.

page_text: When the extractor is to be put into operation the outer lever is turned up until
the inner part is brought to rest on the top of the cartridge case inserted in the
central tube.
The upward motion of the lower portion of the compound lever is still continued,
that is to say, it is rocked over in that direction, the said outer lateral flange thereof
pressing against the said piston lance and forcing it forward, causing it to penetrate
the capsule in the centre of the case as before described.
As soon as it has been pressed forward its whole distance, a spring pawl acts to
retain the upper and lower portions of the compound lever in the same relative
position, and therefore the lance from receding, whilst a downward or backward
motion is given to the whole compound lever and consequently an upward motion
to its inner arm and the protruding lance, which on being thus raised carries with
it or extracts the capsule of the cartridge case which it has previously penetrated.
The cartridge case is held in its position in the central tube whilst the capsule is
being extracted by a small slide which has been forced forward over its periphery
by cam or excentric action in the forward motion of the extractor.
As the downward or backward motion of the extractor is continued, the said
pawl is brought into a curved surface which releases it, whereupon the spring of the
piston lance draws the same inwards, the rear end thereof acting on the said outer
lateral flange of the lower part of the compound lever, and rocking said lower part
over to its position when the extractor was started. The small slide holding in the
cartridge case also being relieved from the action of the cam or excentric during
the return of the extractor is brought to its original position by spring action.
The reprimer is a lever pivoted to the central tube at the other eye thereof, and
its inner end is of such length that when brought down on to the cartridge it will
impinge on the capsule thereof.
A new capsule having been introduced in place of the old extracted one, the
reprimer is brought down on to it with pressure, and firmly fixes it in its place.
The case is then ejected from the central tube or cylinder by an upward stroke
delivered on the plunger below.