Improvements in or connected with Mountings for Disappearing Guns.
Year: 1899

page_text: Date of Application, 13th Nov., 1899
Complete Specification Left, 24th May, 1900--Accepted, 23th July, 1900
PROVISIONAL SPECIFICATION.
Improvements in or connected with Mountings for Disappearing
Guns.
I, AUGUST REICHWALD, of 9, New Broad Street, in the City of London, Steel,
rou, Metal and Mineral Merchant, do hereby declare the nature of this inven-
ion, (a communication to me from abroad by the Firm of Fried. Krupp, of
Essen, in the Empire of Germany, Cast Steel Manufacturers), to be as follows:-
The present invention relates to that class of mountings for disappearing
guns, in which the gun is supported in and by a carrier which descends auto-
matically when the gun is fired, and is designed to provide a more favorable
ath of recoil for the gun than heretofore.
This is effected by connecting the carrier, at two points, with two points on
the carriage by means of crossed levers in the following manner.
The gun is mounted by means of its trunnions in the upper end of the lever
shaped carrier; at its centre the carrier is pivotally connected by means of two
links with the carriage, and at its lower end is attached two other links, which
cross the first pair of links, and have their free ends likewise pivotally attached
to the carriage.
From the lower end of the carrier is suspended a counterweight, working in
vertical guides on the carriage, and a recoil brake of ordinary construction, the
cylinder of which is pivotally connected to the carriage, has the head of its
piston rod attached to the upper pivot pin of the carrier.
The carriage is provided with suitable devices for automatically holding the
gun in the loading position.
To minimise the shock at the end of the recoil, buffers are provided on the
carriage, with which stops on the carrier come in contact when the gun recoils
after its discharge.
The gun is elevated or depressed in the usual way by means of rods, attached
at one end to the gun, and having the other end working adjustably in a guide on
the carriage. The carriage revolves upon a ring of balls in a groove in the
pedestal.
By the above described system of linking, the upper pivot of the carrier, as the
gun recoils, describes an approximately horizontal path, while its lower pivot
describes an approximately vertical path.
As a result of these two movements the trunnions of the gun have imparted to
them a motion, the first part of which is horizontal while the latter portion
is a falling or vertical motion, and by which in combination with the position of
the elevating rods, the recoil curve of the muzzle of the gun is regulated.
When the gun recoils, the counterweight is raised and a portion of the energy
developed by the recoil stored up therein, while the remainder of the energy of
the recoil is absorbed and neutralized by the brake.
ை
8 November 1899

page_text: Improvements in or connected with Mountings for Disappearing
Guns.
I, AUGUST REICHWALD, of 9, New Broad Street, in the City of London, Steel,
Iron, Metal and Mineral Merchant, do hereby declare the nature of this inven-
tion (a communication to me from abroad by the Firm of Fried. Krupp, of
Essen, in the Empire of Germany, Cast Steel Manufacturers) and in what manner
the same is to be performed, to be particularly described, and ascertained in and
by the following statement:-
-
The present invention relates to that class of mounting for disappearing guns
in which the gun is mounted in bearings in a carrier which automatically
descends when the gun is fired, and is designed to obtain a more favourable
path of recoil for the gun than heretofore.
This is effected by connecting two points on the gun carrier with two points
on the carriage by crossed lovers.
The invention is illustrated by way of example in the accompanying drawing,
which shews a suitable form of construction, the gun being maintained and
lifted into the firing position, by a weight suspended from the lower pivots
of the two levers on the carrier and the piston rod of a recoil brake connected
to the top lever pivots of the carrier.
In the drawings,
Fig. 1 is a vertical longitudinal section through the disappearing gun
carriage raised into position for firing.
Fig. 2 is a corresponding front view.
Fig. 3 is a longitudinal section corresponding to Fig. 1, the gun being brought
to the position for loading.
Fig. 4 is a top plan view of the counterweight.
The whole arrangement is symmetrical relatively to a vertical plane taken
through the central axis of the gun.
The gun is mounted by its trunnions in the upper end of the carrier,
which latter consists of two beams C. Connected to the centres of these beams c
are links by means of bolts e Fig. 1, the said links being connected at f to the
walls of the carriage 8. Attached to the lower ends of the beams cat are two
links 9, the other ends of which are pivotally connected at h to the carriage s.
From this arrangemont it will be seen that the links d and g cross each other.
At the lower end of the carrier the counterweight is suspended from the
pivots of the links by means of connecting rods i, and is guided vertically
by Tshaped guides on the carriage. A recoil brake, the cylinder n of which
is mounted on bearings on the carriage, has its piston rod m attached to the
pivot pin upon the carrier.
The carriage is provided with suitable devices for automatically maintaining
the gun in the loading position. For the purpose of diminishing the shock at
the end of the recoil of the gun, the buffers o are provided on the carriage which
come in contact with noses or projections on the carrier.
The gun is elevated or depressed in the usual way by means of the elevating
rods, which are attached at one end to the gun and their other ends are
adjustable in a guide g on the carriage. The carriage rotates upon a ring of
balls u in the pedestal t.
By reason of the above described arrangemont of links, the pivot pin e
of the carrier is caused to swing in an arc of a circle about the point f, and
receives an approximately horizontal motion. The carrier however also receives

page_text: a rotary movement about the bolt e, its lower end being guided by the links g
in an arc of a circle about the pivot h, and therefore approximately vertically.
As a result of these two movements, the trunnions move in a path which is
at first horizontal and then descends, the course of which is shewn in Fig. 3.
The curve described by the muzzle of the gun in its backward movement is deter-
mined by the form of the path of the trunnions, and the position of the elevating
rods, and as shewn in Fig. 3, corresponds to the horizontal firing position of the
gun.
When the gun recoils, the counterweight is raised, and a portion of the energy
of the recoil stored up in the weight, the remaining portion of the recoil energy
is neutralised by the recoil brake. As the carrier is directly guided by tho
links, the guides of the counterweight are entirely protected from the force
of the recoil so all possibility of jamming is obviated.
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
the carrier are
1. A disappearing gun carriage in which two points on
connected with two points on the gun carriage by means of crossed levers, sub-
stantially as set forth.
2. A disappearing gun carriage according to Claim 1 in which a weight for
raising the gun to the firing position, is guided vertically, and connected by
means of connecting rods with the lower link-pivot of the carrier, substantially
as set forth.
3. A disappearing gun carriage according to Claim 1 in which a recoil brake is
connected to the top link-pivot of the carrier, substantially as set forth.
4. The arrangement and combination of parts composing the improved mount-
ings for disappearing guns constructed and acting substantially as and for the
purposes described with reference to the accompanying drawings.
114 lov of May 1000
BREWER & SON,
London Leeds, Agents for the Applicant.
BREWER & SON,
London & Leeds, Agents for the Applicant.