Year: 1896

page_text: Date of Application, 9th June, 1896
Complete Specification Left, 8th Mar., 1897-Accepted, 29th May, 1897
I, ALESSANDRO GIOVANNI BATTISTO SCURI, Manufacturer, of Gravedonna, in the
Kingdom of Italy, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object, to construct a double-barrelled rifle in such a
manner, that it can be used as a range finder.
For this purpose I place the two gun barrels at a variable angle to each other and
apply a graduated scale for measuring the said angle. The two barrels may be fired
off simultaneously, so as to hit two distant objects at the same time.
Each barrel is pivoted at its rear end, and the two barrels are adapted to pivot
symmetrically to the common centre line of the rifle, by means of a short horizontal
drum provided with symmetrically arranged helical grooves into which project a pair
of studs fixed to the barrels. The said drum is turned by means of a slide situated
underneath the stock of the gun, and each barrel is securely guided by means of a
slotted sector fixed to the gun stock and a guide pin fixed to the barrel. The
gun stock also carries a graduated arc, for measuring the angle between the two
gun barrels.
The distance from a given line on the horizon may be ascertained by aiming the
two barrels at two given points on the said line and measuring the angle between the
two lines of vision or between the axes of the two barrels, then advancing or receding
a short distance, aiming the barrels again at the same points on the horizon, and
measuring the angle between the new lines of vision. As the distance between the
first and second point of observation is known, in addition to the two angles, the .
distance from one of the two points on the horizon is geometrically determined.
Instead of making both gun barrels adjustable, one may be rigidly fixed, while the
other is pivoted and adjustable to the desired angle.
Dated this 8th day of June 1896
FAIRFAX & WETTER,
Agents for the Applicant
I, ALESSANDRO GIOVANNI BATTISTO SCURI, Manufacturer, of Gravedonna, in the
Kingdom of Italy, 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 has for its object, to construct a double-barrelled rifle in such a
manner, that it can be used as a range finder.
For this purpose I place the two gun barrels at a variable angle to each other and
apply a graduated scale for measuring the said angle. The two barrels may be fired
off simultaneously, so as to hit two distant objects at the same time.

page_text: In the accompanying drawings, Fig. 1 is a sectional elevation of a rifle embodying
my invention, Fig. 3 is a plan of the same, Fig. 4 is a diagram showing the method
of measuring the distance between the two points A and Z, and Fig. 2 is a partial
plan after removal of the gunbarrels.
The barrels and 12 of the rifle G are pivoted at their rear ends on the points.
and 2, and they are adapted to pivot symmetrically to the common centre line of
the rifle, by means of a short horizontal drum t provided with symmetrically arranged
helical grooves n' n², into which project a pair of studs 23 fixed to the barrels, as
shown by Fig. 2. The said drum is turned by acting with the index finger of the left
hand on a lever s situated underneath the stock of the gun, whereby the studs v² 3 are
forced apart. symmetrically. Each barrel is securely guided by means of a slotted
sector dd, fixed to the gun stock, and a guide pin s or s fixed to the barrel. The
gun stock also carries a graduated are C for measuring the angle a between the
two gun barrels, after they have been pointed at two distant objects Y and Z
(Fig. 4).
The distance from a given line in the distance may be ascertained by aiming the
two barrels from the point of observation A, at two given points Y, Z, on the said line,
and measuring the angle a between the two lines of vision or the axes of the two
barrels, then advancing or receding a short distance, for instance to the point B,
aiming the barrels again at the same points Y and Z on the horizon, and measuring
the angle between the new lines of vision. As the distance A-B between the first
and second point of observation is known, in addition to the two angles a and ẞ, the
distance from one of the two points in the distance is geometrically determined. The
distances A-Z and B-Z may be found from the equations
Instead of making both gun barrels adjustable, one may be rigidly fixed, while the
other is pivoted and adjustable to the desired angle.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is;
A rifle having two barrels adapted to be turned at various angles to each other, in
order to hit two distant objects at the same time, or to ascertain the range by means
of two observations, substantially as described.
Dated this 8th day of March 1807
FAIRFAX & WETTER,
37 and 39, Essex Street, Strand, London, Agents.