Year: 1888

page_text: I, ADOLPH LINDNER, of No. 8 Jäger Strasse, in the City of Berlin, in the Empire of
Germany, Gentleman, 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 relates to improvements in sights for fire-armis both military and civil,
and consists principally of a curved plate with the graduations for the various distances
marked on the same, said curved plate being guided in snugly fitting lateral guides in
the foot to the sight so that the same can be readily adjusted to any desired
graduation.
My improved sight can be furthermore provided with a suitable screw or its
equivalent attached to a clamping lever so as to securely fix the curved sight in any
desired position, or a cam or eccentric can be employed for a like purpose.
It will be readily understood from the accompanying drawing that my improved
sight can be operated with much greater certainty and facility, than is the case with
any of the existing sights, no joint and no sliding notch piece or any other part being
employed which interferes with the manipulation of the fire-arm.
The curved sight plate is shown in the accompanying drawing as being moved
towards the butt end of the gun for the distances beyond the horizontal shot, but in
many instances I prefer to mount the sight so that it moves in the reverse direction or
towards the muzzle of the fire-arm.
Fig. 1 is a top view of my improved sight in closed position for the horizontal
shot.
Fig. 2 is a side view or elevation of the sight in partially extended condition.
Fig. 3 is a cross section, and Fig. 4 a longitudinal section of the sight.
My improved sight consists of the curved sight plate a with the sighting or aiming
notch c and the graduations b, which can be formed on the one side of or run across
the entire breadth of the sight a. In the first case where the graduations are on one
side of the sight plate a only one pointer ¹ is required, but if the graduations run
across the entire sight two pointers arranged exactly opposite to each other can be
employed.

page_text: If the curved sight is extended beyond or drawn out from the base d, the notch c
will be raised, so that the line of sight will correspond with the trajectory requisite for
hitting the object at the distance indicated by the pointer or pointers on the gradua-
tions of the sight.
The movement of the sight a in the guide ways k is limited by means of a screw f
which passes through the curved sight a into a groove e in the base d. The curved
sight a can be rendered rigid at any point in the guide ways in many different
manners, such, for instance, as a screw, cam or eccentric pressing on the same in the
centre of the length of the base either from above or below, or as represented in
the accompanying drawing by clamping the curved sight from the one side.
For this purpose I employ a lever g, which is rigidly connected to a screw / moving
in the base d and operating an angular plate i carrying the pointer, so that the said
plate i is pressed firmly against the edge of the sight plate a, thus holding the same
securely in position when the lever or arm g receives a movement of about 90°.
A like return movement of the lever will release the sight plate a so that. the same
can be readily readjusted.
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 :-
1. In sights for fire-arms, the application of a curved graduated sight plate a with
aiming notch c, which can be moved in suitable guide ways, said movement being
limited so as to prevent the said graduated sliding sight plate from leaving the base d,
substantially as and for the purpose set forth.
2. In sights for fire-arms, the application of a curved graduated and notched sight
plate a which can be clamped and securely held in any desired position by means of
the screw h, plate i with pointer and lever arm g or other appropriate clamping
purpose set forth.
device, substantially as and for the
Dated thin 10th
1000