Year: 1887

page_text: Date of Application, 18th Feb., 1887
Complete Left, 27th Sept., 1887
Complete Accepted, 28th Oct., 1887.
I, CHARLES DENTON ABEL, of No. 28 Southampton Buildings, Chancery Lane in
the County of Middlesex, Consulting Engineer and Patent Agent, do hereby declare
the nature of this invention to be as follows:-
This invention relates to an improved construction of extractor mechanism for
extracting the cartridge cases from breech loading guns having a vertically sliding
tapering breech block."
In a recess in the outer end face of the cartridge chamber is placed a loose plate
whose upper edge is formed to fit partly round the cartridge case, just behind the rim
thereof, while its lower edge is supported by a suitable fulcrum, and has on the outer
face two projections.
The vertically sliding breech block has, on the face that fits against the end face of
the cartridge, firstly, two longitudinal grooves in which are situated the projections
of the extractor plate, so that the block is free to slide up and down over them, and
secondly, it has two projections, shoulders or catches in such grooves that come in
contact with the projections on the extractor plate when the block is slid downwards,
and in thus striking sharply against them, cause the upper part of the extractor plate
to be jerked sharply forward, whereby the cartridge case is drawn out of the breech
chamber and thrown. through the hole in the upper end of the breech block, which
in the lowered position thereof is in line with the bore of the gun.
The mode of arranging the fulcrum of the extractor plate, and the device on the
breech block for acting upon the same may be variously modified; thus the extractor
plate may have a rounded projection or bead on its inner face, fitting into a
corresponding hollow in the end face of the cartridge chamber, or it may be supported
at its lower edge by a plate fixed to the breech of the gun, or it may be connected to
the latter by a hinge.

page_text: The devices on the breech block may consist either of separate catches or bolts
fitting in recesses therein, and kept in a forward position by springs, or they may be
fixed stops or studs in the before-mentioned grooves.
The breech block and the slot in which it slides are made with such an amount of
taper that when there is no cartridge in the cartridge chamber, the breech block can
be slid up into the slot of the gun to such an extent that the extractor plate can be
taken out of or introduced into its seat beneath its lower end, and when the
extractor plate is removed the breech block can also be entirely withdrawn
downwards.
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ABEL & IMRAY,
Agents for the Applicant.
I, CHARLES DENTON ABEL of No. 28 Southampton Buildings, Chancery Lane in 1
the County of Middlesex, Consulting Engineer and Patent Agent 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 :-
This invention relates to an improved construction of extractor-mechanism for
extracting the cartridge cases from breech loading guns having a vertically sliding
tapering breech block.
In the recess in the outer end-face of the cartridge chamber is placed a loose plate
whose upper edge is formed to fit partly round the cartridge case just behind the rim
thereof, while its lower edge is supported by a suitable fulcrum, and has on the outer
face two projections.
The vertically sliding breech block has, on the face that fits against the end face of
the cartridge, firstly two longitudinal grooves in which are situated the projections of
the extractor plate, so that the block is free to slide up and down over them, and
secondly it has two projections, shoulders or catches in such grooves that come in
contact with the projections on the extractor plate when the block is slid downward,
and in thus striking sharply against them, cause the upper part of the extractor plate
to be jerked sharply forward whereby the cartridge case is drawn out of the breech
chamber and thrown through the hole in the upper end of the breech block, which, in
the lower position thereof, is in line with the bore of the
gun.
The mode of arranging the fulcrum of the extractor plate, and the device on the
breech block for acting upon the same may be variously modified; thus the extractor
plate may have a rounded projection or bead on its inner face, fitting into a

page_text: corresponding hollow in the end face of the cartridge chamber, or it may be supported
at its lower edge by a plate fixed to the breech of the gun; or it may be connected to
the latter by a hinge.
The devices on the breech block may consist of either separate catches or bolts
fitting in recesses therein and kept in a forward position by springs, or they may be
fixed stops or studs in the before mentioned grooves.
The breech block and the slot in which it slides are made with such an amount of
taper that when there is no cartridge in the cartridge chamber, the breech block can
be slid up into the slot of the gun to such an extent that the extractor plate can be
taken out of or introduced into its seat beneath its lower end, and when the
extractor plate is removed the breech block can also be entirely withdrawn
downwards.
The accompanying drawings shew various arrangements for carrying out the above
described invention.
Fig. 1 shews a part longitudinal section of a gun with vertically sliding breech
block in the closed position, Fig. 2 shews the same view with the breech block in the
open position it being moved down in the direction of arrow I and Fig. 6 shews
a view of the rear side of the breech block. Fig. 4 is a section on line W W Fig. 1.
The extractor A consists of a flap fitting with a semicircular hollow behind the rim b
of the cartridge, and having a bead a on its inner face fitting into a corresponding
groove in the face of the cartridge chamber. On the outer face of the extractor are
two ribs a¹ having beaks a' at their lower ends.
The extractor is let into the face of the cartridge chamber so that only the ribs a¹
with their beaks a² project beyond the latter, and the breech block C has two
grooves c of suitable depth formed in it into which these ribs enter, so that they do
not interfere with the vertical motion of the breech block.
The extractor is actuated by means of spring catches d Figs. 1, 2, 3, or spring
bolts e Fig. 8 arranged in recesses in the breech block in positions corresponding to
those of the ribs a', the said catches or bolts being caused on the downward motion
of the breech block, to strike with their projections d'or e against the beaks a
and thus cause the plate A to turn slightly outwards upon its fulcrum a, and as this
motion is effected suddenly and with some force on the rapid downward motion of
the block C, the extractor will be made to throw the cartridge case with a sudden
jerk backwards in the direction of the arrow II. Fig. 2.
The catches d or bolts e are so arranged relatively to the opening C¹ in the breech
block that that this will have arrived opposite the cartridge chamber at the time that
the catches act upon the extractor so that the cartridge case can be thrown by the
latter through the said opening.
The springs dor e tend to force the catches or bolts d or e outwards so as to
ensure their catching against the beaks a².
Fig. 5 shews a part sectional plan of the breech block and extractor on line X Y
Fig. 1 Fig 6 shews a front view and side view of the extractor detached. Fig. 7.
shews dotached front and side views of a catch d and boli e.
Instead of forming the fulcrum for the extractor as a groove in the face of the
cartridge chamber, its projecting bead a may be supported by a plate fat the
underside of the gun secured by screws, as shewn at Fig. 9. Or the extractor may
be connected to the plate f. by a hinge, as shown at Fig. 10.
In place of the catches d or bolts e fixed projections g may be provided in the
grooves c as at Figs. 9 and 1 against which the beaks a² of the extractor strike
when the breech block.is moved downwards, so as to throw out the cartridge case;
the fulcrum of the extractor may in this case be arranged either as shewn in these
figures, or as described with reference to Figs. 1, 2, and 8.
In order to enable the extractor to be readily introduced into its place and removed
therefrom, the taper of the breech plug is so arranged that on the distance Z, Z it is
about equal to the thickness rim of the cartridge case, so that when there is no
cartridge in the gun the breech block, on removal of the plate h, can be pushed up to
about the axial line of the gun, thus leaving the extractor quite free below it, so that

page_text: it can now be removed in the direction of the arrow, III or introduced in the contrary
direction.
The catches & bolts e springs ď or e³ and beaks a² may be variously modified in
form, or be replaced by equivalent appliances without departing from the nature of
this invention.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is :-
1. The use in breech loading guns with vertically sliding breech blocks, of an
extractor A embracing the cartridge case behind the rim b and provided on its inner
face with a projecting head a fitting in the groove on the face of the cartridge
chamber, while on its outer face it is provided with projections or beaks a² against
which bear spring catches d or bolts e or fixed projections g on the downward motion
of the breech block so as to turn the extractor on its fulcrum for the purpose of
ejecting the cartridge case when the opening C¹ of the block has arrived opposite the
latter.
2. In the construction of extractor referred to in the preceding claim, supporting
the projecting bead a by means of a plate f to which it may or may not be hinge
jointed, substantially as herein described with reference to Fig. 9 and 10.
3. In the arrangement of extractor and breech block referred to in the preceding
claims, constructing the breech block with an amount of taper on the distance Z-Z
equal to the thickness of the cartridge rim 6 so that the breech block can be raised
sufficiently to uncover the extractor when there is no cartridge in the gun substantially
as herein described.