Improvements in Breech Loading Small-arms.
Year: 1893

page_text: Date of Application, 27th Sept., 1893-Accepted, 4th Nov., 1893
COMPLETE SPECIFICATION.
Improvements in Breech Loading Small-arms.
1, FRANK ABRAHAM HOLLENBECK of Syracuse in the County of Onondaga
and State of New York one of the United States of America, Inventor, 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 :-
My invention is an improvement in hammerless breech loading fire arms and
consists in the novel features of construction and combination of parts hereinafter
fully described.
In the accompanying drawings I have illustrated one form in which I have
contemplated embodying my invention and said invention is fully disclosed in the
following description and claims.
Referring to the drawings,
Figure 1 represents a sectional view of a part of a fire arm embodying my
invention.
Figure 2 is a view similar to Figure 1 with the parts in different positions.
Figure 3 is a rear elevation of the barrels and barrel lug.
b
In the said drawings, reference being had to the letters marked thereon,
A represents the stock portion of the gun and B the barrels of ordinary construction
provided with the stock engaging lug as usual. The stock portion A is provided
with a pivot pin or bolt a which is engaged by the lug b of the barrels in the usual
manner and b¹ is the fore-end of ordinary construction for holding the parts in
operative condition. The stock A is provided with a suitable lock casing in which
is supported the pivot pin c of the hammers CC which are constructed preferably
as shown, each hammer being provided with a forwardly extending integral arm
which I term the cocking arm C. The portions of the hanımers and cocking arms
which engage the pivot bolt c are slotted as shown at e, so as to permit a rearward
movement of said hammers and cocking arms, bodily. Each hammer is provided
with a firing projection c, and the upper face or edge of the hammer is also
provided preferably with two locking notches c c adapted to be engaged by one
of the sears D. Each sear D is pivoted at d and has a shoulder d¹ for engaging
the hammer. Each sear is also provided with a rearwardly extending arm d
provided with a lateral projection d which is engaged by one of the triggers E, so
that when the trigger is operated the arm d' of the sear will be raised and the
shoulder d' removed from engagement with the notch of the hammer to allow the
hammer to fall. The sear is held in engagement with the trigger and in operative
relation with the hammer by means of a suitable spring D¹.
The rear face of each hammer C is recessed to receive the ends of the main
spring C, there being a spring for each hammer and said main spring engages an
inclined face c which construction forces the hammer forward so that the rear end
of its slot et engages the pivot pin c and the parts operate as if there was no slot.
The forward ends of the cocking arms C1 C₁are provided with beveled or inclined
faces which are adapted to be engaged by the lower edge of the barrel lug b.
The barrel lug b is provided at each side with a recess 63 into which one of the
cocking arms C¹ projects and said lug is provided below said recesses b³ with solid
portions which I term cocking shoulders, to operatively engage the forward ends
of the cocking arms C¹ to cock the hammer. When it is desired to cock the
hammers the muzzle end of the barrels will be depressed and the cocking shoulders
will then engage the under sides of the cocking arms C' C' and lower the hammers
until the sears D D engage the notches c' c' of the hammers.
When it is desired to separate the barrels from the stock the fore-end b' is

page_text: removed and the barrels depressed until the sear engages the notch of the
hammer. The barrels may then be removed and returned when desired. Should
the hammers be released by the sears and permitted to fall, while the barrels are
removed, the parts may still be readily assembled. When the lug b has been
placed in engagement with the pivot bolt a of the stock and the barrels raised, the
lower edges of the lug b will engage the inclined or cam portions c³ of the cocking
arms C C and move said arms and the hammers C C rearwardly with respect to
the pivot bolt c (such movement being allowed by the slot c) until the portions 63
of the lug, which I term the cocking shoulder, pass beneath the ends of the cocking
arins, when the main springs C acting upon the inclined faces cc of the hammers,
will force the hammers forward into their normal positions and the ends of the
cocking arms C¹ C¹ will then engage the recesses b² of the lug b.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be perfornied, I declare that what I
claim is :
1. In a breech loading "break-down" gun, a hammer, a cocking lever connected
therewith and operated by the barrel lug, and a cam device throwing the lug and
cocking lever into operative connection in the act of assembling the parts,
substantially as described.
2. In a fire arm the combination with the barrel, provided with a cocking
shoulder, of a hammer provided with a forwardly extending cocking arm movable
longitudinally of the fire arm and having a cam face adapted to be engaged by said
shoulder, substantially as described.
3. In a fire arm the combination with the barrel, having a cocking shoulder, of a
hammer mounted on a support, one of said parts being slotted and the other being
provided with a part engaging said slot, said hammer having a portion provided
with a cam face adapted to be engaged by the cocking shoulder of the barrel,
substantially as described.
4. In a fire arm the combination with the barrel, having a cocking shoulder, of
the hammers provided with slotted portions engaging their supporting bolt, springs
engaging said hammers and holding them in fixed relation with said bolt, said
hammers having parts provided with cam faces adapted to be engaged by said
cocking shoulders, substantially as described.
5. In a fire arm the combination with the barrel having a cocking shoulder, of
the hammer provided with a slotted portion engaging its supporting bolt, the main
spring engaging a cam face on said hammer and holding it normally in fixed
relation with said bolt and a cocking arm connected with said hammer and having
a cam face for engaging the said shoulder, substantially as described.
6. In a fire arm a cocking arm moving with the hammer in both directions in
combination with a sear for retaining the hammer in cocked position and a sear
notch in position to be engaged by the sear when the barrel or barrels are in
position to be removed and thereby retain the cocking lever in position to permit
the removal and return of the barrel or barrels, substantially as described.
Dated this Second day of August 1893.
FRANK ABRAHAM HOLLENBECK.