Improvements in Cannon and other Ordnance.
Year: 1890

page_text: Date of Application, 30th Apr., 1890
Complete Specification Left, 30th Jan., 1891-Accepted, 7th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Cannon and other Ordnance.
I, JULES GERSANT, of 96, High Street, Beal, in the County of Kent,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to cannon and other ordnance and consists in the improved
construction thereof hereinafter described the object of which is to render them less
liable to burst when fired.
In the improved ordnance the steel core which forms the main part of the
material of the ordnance is surrounded along that part which lies between the
breech and the chase and also for a certain distance along the chase with inde-
pendent bars or slats of wrought iron lying lengthwise of the gun and accurately
fitting cach to each along their sides and to the steel core. The ends of the rear
set of bars at the breech are turned over or inwards to engage over the edge or
within an annular groove in the steel core and the forward ends of the bars of said
set are either turned inward to engage in a similar annular groove or preferably (to
avoid the weakening of the steel core by the presence of said groove) turned
outward, the steel core being increased in diameter just beyond the ends of the bars.
The set of bars along the part of the chase are similarly fixed by turning their ends
inwards to engage in annular recesses in the steel core or by turning them outward
and increasing the diameter of the steel core beyond their ends to hold them in place.
The steel rings which are shrunk over these iron bars are made each with an under-
lapping portion projecting from one end of smaller diameter than the whole diameter of
the ring to fit under or within an annular recess made in the next ring to receive it,
these rings being also if required fastened together by bolts passing through their
overlapping and underlapping portions respectively and projecting also for a com-
paratively slight distance into the iron bars below the rings."
The breech block may be provided with lugs of substantial size on its rear part
in addition to the usual screw threads, said lugs being intended to fit within or
under a flange or suitable projections of like substantial nature on the breech when
the breech block after insertion is turned and fixed.
Dated this 30th day of April 1890.
MERBERI & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements in Cannon and other Ordnance.
1, JULES GERSANT, of 9, High Street, Deal, in the County of Kent,
Mechanical Engineer, 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 cannon and other ordnance and consists in the improved
construction thereof hereinafter described the object of which is to render them less
liable to burst when fired.
In the improved ordnance the steel core which forms the main part of the
material of the ordnance is surrounded along that part which lies between the
breech and the chase and also for a certain distance along the chase with inde-
pendent bars or slats of wrought iron lying lengthwise of the gun and accurately
fitting each to each along their sides and to the steel core.
The ends of the rear set of bars at the breech are turned over or inwards to
رم

page_text: engage over the edge or within an annular groove in the steel core and the forward
ends of the bars of said set are either turned inward to engage in a similar annular
groove or preferably (to avoid the weakening of the steel core by the presence of
said groove) turned outward the steel core being increased in diameter just beyond
the ends of the bars. The set of bars along the part of the chase are similarly
fixed by turning their ends inwards to engage in annular recesses in the steel core
or by turning them outward and increasing the dinmeter of the steel core beyond
their ends to hold them in place. The steel rings which are shrunk over these
iron bars are made each with an underlapping portion projecting from one end of
smaller diameter than the whole diameter of the ring to fit under or within an
annular recess made in the next ring to receive it these rings being also if required
fastened together by bolts passing through their overlapping and underlapping
portions respectively nud projecting also for a comparatively slight distance into
the iron bars below the rings.
The breech block may be provided with lugs of substantial size on its rear part
in addition to the usual screw threads said lugs being intended to fit within or under
flange or suitable projections of like substantial nature on the breech, when the
breech block after insertion is turned amb fixed.
In the accompanying drawings
Fig. 1 is a longitudinal section on a horizontal plane through a cannon or gun
constructed according to this invention.
Fig. 2 is a cross section of the gun on line ab Fig. 1.
Fig. 3 is a cross section on line ed Fig. 1.
Fig. 4 is a cross section of a part or parts on line ef′ Fig. 1.
Fig.
♬ is a cross section on line gà Fig. 1.
Fig. 6 is a side elevation and Fig. 7 a rear elevation of the breech closing
block.
Fig. 8 is a longitudinal section illustrating a modification hereinafter de-cribed.
A is the steel core which is constructed according to the usual methods heretofore
employed. Bis an annular flange or thickening made or formed on the core A
preferably as shown somewhat forward of the trunnions. At the rear end of the
core is the annular groove extending around the periphery of the core at its rear
edge and at a desired distance along the chase of the gun is the annular groove D
extending around the core.
are bars or slats of malleable iron of suitable strength which are laid along the
outside of the core A parallel to the axis of the gun and extend from the annular
flange D to the rear end of the cure. At the flange D these bars terminate with
outwardly directed hooks E lying exactly against said flange and extending
outward so far that their outer ends are level with the outer face of said
flange.
At the breech end the bars E terminate in inwardly or centrally directed
hooks engaging exactly into the annular groove (which preferably is of such
depth or extent that the outer or rearward ends of the bars Elie level with the
rear face of the core A. The bars or slats E fit accurately each to each as shown in
Figs. 2, 3 and 5.
The chase for a suitable distance from the trunnions forward is also surrounded
by a similar set of bars or slats F of which the outwardly directed hooked ends F
at one end lie snugly against the flange B in a similar manner to the hooked
ends and the inwardly directed hooked ends Fat the other end fit accurately
into the groove D.
The iron bars so arranged are covered with steel rings. The ring which
covers the flange 13 and the hooked ends EF of the bars E and and also the
said bars for a slight distance is shown in section in Fig. 4 and is made in two
corresponding halves each having a socket or mortise G' at one end and a tenon C
at the other to accurately lit into suid socket and thus form a completo ring. This
ring forms a secure fastening for the bars E and F holding their ends E and F
firmly against the flange B, and preventing them from drawing out rearward and

page_text: forward respectively. The ends of the two sections of the ring G are secured
together by flat bolts G³ passing through holes G in the tenon G and in the sides
of the sockets G. The ring G has on its rear face the annular projecting
part G and on its front face the annular projecting part Ge for underlapping
the rings next thereto. The ring G being fixed in place, the rings Gare
successively shrunk on, that next rearward of the ring G having the trunnions GB.
Each ring Goverlaps with part G the underlapping part Go of the ring next
before it, and may if desired be also fixed in place by the bolts H passing
through the parts Go, Go and projecting slightly into the bars E F. The extreme
rearward ring G7 projects inwards over the end of the core A and is provided with
the flange G. The extreme forward ring G7 lies over the front ends of the bars F
and also partly on the core A.
In place of making the core with the flange B it may be made without said
flange and the bars E may be fastened direct to the bars F by hooking their ends
together as shown in Fig. 8. If also it is undesirable to weaken the chase by
making the groove D in the core. this groove may be dispensed with and the
ends of the bars F be turned outward instead of inward.
The flange G projects over the groove J in the end of the core A and is
provided with four notches J¹ through which the four lugs J on the breech
block pass when the latter is placed in the breech. On turning the breech
block, the lugs J2 move in the groove under the flange G" which serves therefore
as an additional security against the blowing out of the breech block.
Having now particularly described and ascertained the nature of my said invon-
tion, and in what manner the same is to be performed, I declare that what [
claim is :-
:-
1. The construction of cannon or other ordnance, with steel core, hooked slats or
bars and steel rings combined substantially as set forth.
2. The construction of breech loading cannon or other ordnance with the notched
flange in combination with the breech block having lugs J as and for the
purpose herein described.
Dated this 30th day of Janverr 1801
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.