IMPROVEMENTS IN APPARATUS FOR EXTRACTING CAPS FROM CARTRIDGE CASES
Year: 1880

page_text: "
LETTERS PATENT to Sydney [Pitt, of Sutton, in the County of Surrey, for
an Invention of "IMPROVEMENTS IN APPARATUS FOR EXTRACTING CAPS
FROM CARTRIDGE CASES." A communication from abroad by Thorsten
Nordenfelt, of Stockholın, in the Kingdom of Sweden, Civil Engineer.
PROVISIONAL SPECIFICATION left by the said Sydney Pitt at the Office
of the Commissioners of Patents on the 23rd September 1880.
SYDNEY PITT, of Sutton, in the County of Surrey. IMPROVEMENTS IN
APPARATUS FOR EXTRACTING CAPS FROM CARTRIDGE CASES." [A communication
from abroad by Thorsten Nordenfelt, of Stockholm, in the Kingdom of Sweden,
Civil Engineer.]
This Invention has for its object improvements in apparatus for extracting caps
from cartridge.cases. For this purpose I arrange an apparatus which works by
means of hydraulic or fluid pressure; the cartridge case is placed and retained in a
chamber, and whilst it is so held the cap is forced from its seat by pressure applied
through the medium of water or fluid enclosed within the cartridge case. The cap
which is thus ejected is in no way injured by the operation of removal, and may
be reprimed and again used. The apparatus in one form consists of a water trough
with a plunger entering it through a stuffing box at one end. The plunger can be
moved in and out by a hand lever or like appliance. Around the aperture through
which the plunger passes and within the trough there is a tube or chamber adapted
to receive the cartridge case, and when the cartridge case has been placed in the
chamber a lever is turned over behind the head of the cartridge case to prevent it
from being thrown out when the pressure is applied. The plunger when it is
caused to advance enters the interior of the chamber in which the cartridge case is
contained, and the chamber being closed by the head of the cartridge case the water
becomes exposed to pressure, which can only find relief by the displacement of the
cap, the outer surface of which is unsupported.
The apparatus may be arranged to work by the pressure of air, but not, as I
believe, so conveniently.

page_text: chamber that its rim touches the stuffing-box the locking leverf is brought forward
to prevent the cartridge case being forced by the pressure out of the chamber b.
Now the hand wheel e is turned, screwing the plunger forward, and so exposing
the water contained within the cartridge case to pressure. This pressure causes the
cap h* to fly out. Afterwards the lever fis thrown back, and the cartridge case
is removed with the fingers, or if it should fit tightly in the chamber 6 the plunger
is mado to advance until it pushes the cartridge case out.
In machines of small size a hand lever may conveniently be substituted for the
wheel e.
Having thus described the nature of the said Invention, and the manner of
performing the same, I would have it understood that I claim,-
First. The arrangement of apparatus for extracting caps from cartridge cases
with a chamber into which the cartridge case fits, and is retained whilst pressure
is applied to water or fluid within the case.
Second. The apparatus, substantially as described and illustrated by the annexed
Drawings.
In witness whereof, I, the said Sydney Pitt, have hereunto set my hand and
seal, this Twenty first day of March, in the year of our Lord One thousand
cight hundred and eighty one.
SYDNEY PITT. (L.S.)