Improvements in Draw-back-bolt-fire-arms with Automatic Feed of Cartridges from Magazine.
Year: 1886

page_text: Date of Application, 12th July, 1886.
Complete Left, 12th Apr., 1887.
Complete Accepted, 13th May, 1887.
Improvements in Draw-back-bolt-fire-arms with Automatic Feed
of Cartridges from Magazine.
I, JACQUES PHILIPPE PIERI of St. Margarets Mansions, Victoria Street,
Westminster, Middlesex, Gentleman, do hereby declare the nature of this invention
to be as follows :-
.
The object of this invention, is to arrange to, or in connection with, the "action"
of a draw-back-bolt rifled, or other small-arm, certain appliances that an automatic
feed of cartridges in succession can take place from a magazine forming part of said
The cartridges are lifted to put the upper one into a position,-after the with-
drawal of the empty case of the cartridge last fired, by the bolt, the upper full
cartridge being removed by the next forward motion of the bolt.
arm.
The appliances are temporarilly fixed during firing operation.
To carry my invention into practice I form the shoe of such a depth that it may
hold say four cartridges these lying horizontally on a kind of cradle in the shoe.
This cradle is supported by a loose end of the trigger guard whose opposite end is
pivotted to the bottom plate and carries a rack liftable by a paul moved step by step at
each pull back travel of the bolt to bring the cartridges into the bolt in its forward
motion to push the cartridge of the series in succession into the barrel, the arm being
also set at full cock and ready for firing as the bolt lever is pressed sideways to lock
the bolt.
The lift paul is set in action by a rock lever which has two heads arranged within
the path of a stud on the underside of the bolt and the rack which has a second set of
teeth is held by a spring catch plate, the tooth of which is forced outwards to engage
in the next tooth of the rack by the superior force as the rack is lifted.
The sear is carried by a spring plate capable of being depressed as the bolt moves
forward by means of the same stud as acts upon the rock lever.

page_text: When the last cartridge but one of the series has been fired and the bolt is being
pulled back for ejecting the case, the rack has been lifted sufficiently high for a side
projection on it to bear against a projection on the sear carrying plate and during the
next forward motion of the bolt it not only pushes the last cartridge of the series into
the barrel but it puts the rack into such a position that at the next back travel of the
bolt the stud of the rack passes over the stud of the sear carrier and it, i.e. the rack
being clear of the lift paul and spring catch drops by the weight of the trigger guard
and cradle making sufficient noise to warn the firer that he has no more cartridges in
the magazine.

page_text: Improvements in Draw-back-bolt Fire-arms with Automatic Feed
of Cartridges from Magazine.
I JACQUES PHILIPPE PIERI, of St. Margarets Mansions, Victoria Street,
Westminster, Middlesex, Gentleman, do hereby declare the nature of my said invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
The object of this invention is to arrange to or in connection with the action of a
draw-back-bolt rifled or other small-arm certain appliances that an automatic feed of
cartridges in succession can take place from a magazine forming part of said arm.
The cartridges are lifted to put the upper one into a position after the withdrawal of
the empty case of the cartridge last fired by the bolt, the upper full cartridge being
removed by the next forward motion of the bolt.
The appliances are temporarilly fixed during firing operation.
Figure 1 of the annexed drawings, is a sectional elevation of a draw-back-bolt fire
arm with the upper cartridge pushed into the barrel on the forward movement of the
bolt the striker having been set by the sear taking into the full-bent of the head ready
for firing.
Figure 2 is a similar view after firing.
Figure 3 shows the bolt drawn back having brought the empty cartridge case with
it and ejected the same. In these three views the upper cartridge of the five which
have been previously dropped into the magazine from a case such as that shown at
Figure 4, four of said cartridges enter the magazine, the upper one of the five being
in position for the motion of the bolt.
The shoe A is formed of such a depth that it may hold say four cartridges B, B,
these lying horizontally or nearly so on a kind of cradle C in the shoe A. This
cradle is supported by a loose end D of the trigger guard E, the opposite end of which
is pivotted to the bottom plate F and carries a rack G liftable, shown detached at
Figure 5 by a paul H, shown separately at Figure 6, moved step by step at each pull
back travel of the bolt I to bring the top cartridge B into line with the bolt I, as seen
in Figure 3, in its forward motion to push the top cartridge of the series in succession
into the barrel J, the arm being also set at full cock and ready for firing as seen at
Figure 1, as the bolt lever K is pressed sideways to lock the bolt I.
The lift paul H is set in action by a rock lever L which has two heads a, b, arranged
within the path of a stud c on the underside of the bolt I and the rack G which has a
second set of teeth d as at Figure 5, is held by a spring catch plate M, see Figure 7,
the tooth e of which is forced outwards to engage in the next tooth of the rack G by
the superior force as the rack G is lifted.
The sear N is carried by a spring plate P capable of being depressed as the bolt I
moves forward, the bolt striking against the end f as it moves along.

page_text: When the last cartridge but one of the series has been fired and the bolt I is being
pulled back for ejecting the case as at Figure 8, the rack G has been lifted sufficiently
high for a side projection 9 on it to bear against projection h on the sear carrying
plate P as seen at Figure 8 and during the next forward motion of the bolt I it not
only pushes the last cartridge of the series into the barrel J but it puts the rack G
into such a position that at the next back travel of the bolt I, the stud of the
rack G passes over the stud h of the sear carrier P and it, i.e. the rack being clear of
the lift paul Land spring catch M drops by the weight of the trigger guard E and
cradle making sufficient noise to warn the firer that he has no more cartridges in
the magazine.
The case, Figure 4, is of cardboard and contains 5 cartridges a thin piece of wood
forms the cover and is glued to the case with thick paper. A notch is cut at the side
to enable the cover to be torn away by the thumb, the cartridges are thus free to be
emptied into the magazine.
The rack G may be of circular shape with a given number of teeth corresponding
to the number of cartridges to be filled into the magazine, the trigger guard being
jointed to it so that when the last tooth of the rack is brought nearly up to or over the
vertical centre after the magazine is empty the weight of the cradle and trigger guard
in falling will bring the rack round into proper position for lifting the next series of
cartridges in a similar manner to that hereinbefore described.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is
In a magazine draw-back-bolt fire-arm, the cradle C and trigger guard D, E for
lifting the cartridges in succession by means of the rack G or its equivalent, which
receives motion by the rock lever L acted upon by the draw-back-bolt I as hereinbefore
described, the several parts being arranged as represented in the annexed drawings.