Improvements in Extractor Mechanism for Drop Down Small Arms.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improvements in Extractor Mechanism for Drop Down Small Arms.
We, HENRY WILLIAM HOLLAND of 98 New Bond Street London Gun Maker and
JOHN ROBERTSON of 4 Dansey Yard Wardour Street London Gun Maker do hereby
declare the nature of this invention to be as follows:-
Our improvements relate to that class of extractor mechanism for drop down small
arms in which the cases of exploded cartridges only are ejected from the barrels
whenever the gun is opened.
In this class of mechanism the ejecting apparatus is ordinarily held out of action
by a sear which is tripped when the gun is opened if the hammer has fallen.
Arrangements of mechanism acting in this way were described in the Specification
of a Patent granted to us No. 5834 in the year 1887. In these and in other arrange-
ments heretofore used for tripping the sear of the ejecting mechanism the part which
is caused to act upon the sear if the hammer has fallen acts upon it sufficiently to trip
the sear and cause the ejection of a cartridge case.
According to our present invention we arrange that the part so brought into
position to act upon the sear shall not act upon the sear sufficiently to trip it but only
sufficiently to cause a tail projecting from the sear to be brought into such a position
that upon the further opening of the gun this tail shall come against a portion of the
body or action and the sear be thereby completely tripped and the cartridge case
ejected.
Or in place of the above arrangement we construct ejector mechanism such as is
described in the Specification of our Patent before mentioned in such manner that
the projection on the hammer which controls the movement of the lever used for
tripping the sear does not allow the rear end of the lever to pass till after the lock is
at full cock, and in such manner that a further turning down movement of the barrels
and consequent "overdraw" of the lock sets back the hammer or tumbler far enough
to allow the rear end of the lever to pass it.
On the closing of the gun the hammer or tumbler comes forward till caught and
held by the sear at full cock at the same time the projection on the hammer comes
below the rear end of the lever and holds it in such a position that its fore end shall
not be struck by the tail of the ejector sear when the gun is next opened unless the
trigger has been previously pulled.
When the hammer falls it presses aside the lever and so passes it readily.
21. 10L
COMPLETE SPECIFICATION.
Improvements in Extractor Mechanism for Drop Down Small Arms.
We, HENRY WILLIAM HOLLAND of 98 New Bond Street, London, Gun Maker, and
JOHN ROBERTSON of 4 Dansey Yard, Wardour Street, London, Gun Maker, do hereby
declare the naturo 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 :-
Our improvements relate to that class of extractor mechanism for drop down small
arms in which the cases of exploded cartridges only are ejected from the barrels
whenever the gun is opened.
In this class of mechanismt he ejecting apparatus is ordinarily held out of action by
a sear which is tripped when the gun is opened if the hammer has fallen.
Arrangements of mechanism acting in this way were described in the Specification

page_text: of a Patent granted to us No. 5834 in the year 1887. In these and in other arrange-
ments heretofore used for tripping the sear of the ejecting mechanism the part which
is caused to act upon the sear if the hammer has fallen acts upon it sufficiently to trip
the sear and cause the ejection of a cartridge case.
According to our present invention we arrange that the part so brought into
position to act upon the sear shall not act upon the sear sufficiently to trip it but
only sufficiently to cause a tail projecting from the sear to be brought into such a
position that upon the further opening of the gun this tail shall come against a
portion of the body or action and the sear be thereby completely tripped and the
cartridge case ejected.
Figures 1 to 5 are similar longitudinal sections of a gun constructed in this way.
Figure 1 shows the gun closed and at full cock.
Figure 2 shows the gun partly open and at full cock.
Figure 3 shows the gun closed and fired.
Figure 4 shows the gun partly open and partly recocked.
Figure 5 shows the gun fully open and at full cock.
In Figures 2-5 some of the parts are omitted.
In the construction shewn in these figures the levers employed for setting back
the hammer of the lock of the gun to its cocked position are also used for partially
tripping the sear of the ejecting mechanism whenever the hammer of the lock of the
gun falls. Similarly if a rod or slide is used for setting back the hammer to its
cocked position this rod or slide may also be used for partially tripping the sear of
the ejecting mechanism.
The con-
a is the extractor and ejector, it is shown separately in sido and end elevation
at figures 6 and 7-6 is the hammer of the ejector mechanism shown separately at
Figure 8 which when released is forced forward by the spring and operates the
extractor and ejector a striking against the projection a¹ upon it and forcing it into
the position shown at Figure 5 thus ajecting the empty cartridge case.
struction and action of these parts is now well known and needs no further description.
c is the sear which enters the notch in the hammer b and retains it. It is shown
separately at Figures 9, 10 and 11 which are side, underside and front views
respectively. The sear cis pivotted at c¹ and its nose is pressed into the notch 6' by
the spring cd is a plate having a nose d¹ to operate the sear, it is shown separately
at Figure 13. The plate d is pivotted about the hinge pine of the gun but it is
compelled to remain nearly stationary relatively to the action of the gun as it lies in
a slot and there is only the small distance shown between its bottom edge and the
bottom of the slot. This part is made separate in place of being fixed to the action
and the small play is allowed so that the tail of the sear shall not be burred―f is the
cocking lever and g the lever which operates it; the latter is shown separately at
Figure 12. As the barrels are turned down the top of the slot in the curved block gll
upon them through which the nose g' of the lever projects comes against the nose g¹
and turns the lever g as shown in Figures 2, 4 and 5 and operating the cocking lever
which acts on the hammer turns it about its pivot ¹ and cocks the gun.
g
If the gun is opened when at full cock the nose g¹ of the lever g does not come
against the projection call on the sear until the nose d' of the piece d has passed the
tail of the sear as shown in Figure 2 and therefore the sear is not tripped and the
cartridge is not ejected. When the nose g¹ comes against the projection c¹ the tail
of the sear is moved towards the piece d and the piece d then rocks on its centre so
that the nose of the tail of the sear does not cut into it. When however the gun is
fired the hammer comes against the end of the cocking lever for even strikes and
slightly moves it, turning the lever g and bringing its nose against the projection c¹ll
on the sear slightly moving the latter. The difference of the positions of the parts
will be seen on comparing Figure 3 with Figure 1. Immediately the gun is now
commenced to be opened the nose 2 bearing against the projection c¹ at once begins
to turn the sear c about its pivot and brings its tail into the path of the nose d of
the piece d as shown in Figure 4. When the hammer has been set back to full
cock and just before the gun is fully open the sear c is tripped escaping from the

page_text: notch b' of the hammer 6 and the latter is freed and being forced forward by its
spring strikes against the extractor and ejector a and expels the empty cartridge case
the parts assuming the positions shown in Figure 5. The parts are so adjusted as
to insure that the hammer shall be fully cocked before the sear is tripped and the
cartridge ejected otherwise it might happen in hurried firing that a fresh cartridge was
inserted and the gun again closed without its heing cocked.
Figures 14, 15, 16, 17 and 18 are diagram views showing a modification.
Figure 14 shows the gun closed and at full cock.
Figure 15 shows the gun partly open and at full cock.
Figure 16 shows the gun closed and fired.
Figure 17 shows the gun partly open and partly recocked.
Figure 18 shows the gun fully open and at full cock.
In this arrangement the cocking is effected by a lever separate from the tripping
lever. The front end of the cocking leverf enters a slot in the block fixed to the
underside of the barrels so that when the latter are turned down the front end of the
lever is carried down with it and the rear end is raised and the hammer his cocked.
jis a lever by which the tail of the sear c (figure 1 &c.) is brought into the path
of the piece d.
If the gun is opened after it has been fired see Figure 16 the
Jump upon the haminer as the latter is being cocked depresses the rear end of
the lever raising its front end which coming against the projection cl of the
sear c forces it back into the path of the nose d' of the piece d tripping the sear and
ejecting the empty cartridge case as before described. On the other hand if the gun
opened when cocked (see Figure 15) the lump does not come against the
lover which remains free and does not move the sear c whose tail therefore passes clear
of the nose d' and the cartridge is not ejected.
The same result can also be obtained in various other ways:-for example the gun
described in the Specification of our former Patent No. 11623 of the year 1887 can
be modified by making the slide A attached to the hammer como against the sear
when the gun is fired and bring its tail end into the path of the nose d¹. A diagram
view of this arrangement is shown at Figure 19.
Or in place of the above arrangement we construct ejector mechanism such as is
described in the Specification of our Patent No. 5834 of the year 1887 before
mentioned in such manner that the projection on the hammer which controls the
movement of the lever used for tripping the sear does not allow the rear end of the
lever to pass till after the lock is at full cock and in such manner that a further
turning down movement of the barrels and consequent "overdraw" of the lock sets
back the hammer or tumbler far enough to allow the rear end of the lever to pass it.
On the closing of the gun the hammer or tumbler comes forward till caught and
held by the sear at full cock at the same time the projection on the hammer comes
below the rear end of the lever and holds it in such a position that its fore end shall
not be struck by the tail of the ejector sear when the gun is next opened unless the
trigger has been previously pulled.
•
When the hammer falls it presses aside the lever and so passes it readily.
Figures 20 to 23 show this arrangement.
In Figure 20 the gun is closed and at full cock.
In Figure 21 the gun is open and at full cock.
In Figure 22 the gun is closed and fired.
In Figure 23 the gun is partly open and partly recocked.
As in the first arrangement f is the cocking lever and g the lever which operates
it. kis a lever which is shown separately in Figure 24, its front end k³ projects, as
shown. When the parts are in the position shown in Figure 23 this projecting nose
comes against the arm upon the tail of the sear c. When however the gun is at
full cock as shown in Figures 20 and 21, the rear end of the lever k is in front of
the hammer and therefore, if the gun be opened, the front end k¹ does not come into
contact with the arm c and the sear is therefore not tripped.
The lever k has sufficient spring to allow the hammer in falling to press its tail

page_text: projection on the side of the hammer (see Figure 24 which is a rear view of the
hammer) and is held there as shown in Figure 23 turning the sear about its pivot
tripping it and causing the empty cartridge case to be ejected as described in the
former arrangements. When the gun is fully open and at full cock the spring c³ of
the sear forces the front end of the lever k downwards, thereby raising its
rear end ³ bringing it in front of the hammer, as shown in Figures 20 and 21.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. In drop down small arms fitted with extractor mechanism by which when the
gun is opened the cases of exploded cartridges but not full ones are ejected, the
construction of the lock and ejecting mechanism in such manner that when
the hammer of the lock falls a stop is moved into or retained in position for an arm
on the sear of the ejecting mechanism to be brought against it at the commencement
of the opening of the gun and for this soar to be thereby partially tripped so that a
tail on the sear is brought into position to come at the termination of the opening of
the gun against a second stop carried by the body or action to completely trip the
sear and cause the cartridge case to be ejected.
2. In drop down small arms fitted with extractor mechanism by which when the
gun is opened the cases of exploded cartridges but not full ones are ejected, the
construction of the lock and ejecting mechanism in such manner that when
the hammer of the gun lock falls the sear of the ejecting mechanism is partially
tripped so that a tail on the sear is brought into position to come at the termination
of the opening of the gun and after the hammer of the gun has been set back to its
cocked position against a stop carried by the body or action to completely trip the
sear and cause the cartridge case to be ejected.
3. The construction of drop down small arms in such a manner that the lever or
slide used for setting back the hammer of the lock to its cocked position is also used
to partially trip the sear of the ejecting mechanism.
4. In drop down small arms fitted with extractor mechanism by which when the
gun is opened the cases of exploded cartridges but not full ones, are ejected-tho
construction of the lock and ejecting mechanism in such manner that when
the hammer of the lock falls a lever is rocked and made to partially trip the soar of
the ejecting mechanism either as the hammer falls or at the commencement of the
opening of the gun.
5. In drop down small arms in which the lever or slide used for setting back the
hammer of the lock to its cocked position is also used for partially tripping the sear
of the ejecting mechanism the employment of a removable stop piece or detent
which completes the tripping of this sear at the completion of the opening of the gun
if the haminer of the lock has fallen but which if the gun is opened when the
hammer of the lock is in its cocked position and when consequently the partial
tripping of the sear takes place later is free to move away from the tail end of
the sear so that damage is avoided when the nose of the tail end of the sear comes
against it.
6. The construction of ejector mechanism for drop down small arms substantially
as herein before described with reference to Figures 1 to 13.
7. The construction of ejector mechanism for drop down small arms substantially
as herein before described with reference to Figures 14 to 18.
8. The construction of ejector mechanism for drop down small arms substantially as
herein before described with reference to Figure 19.
9. The construction of ejector mechanism for drop down small arms substantially
as herein before described with reference to Figures 20 to 25.
Dated this 16th day of September 1889.
CARPMAEL & Co.,
Agents for the Applicants.