Improvements in or connected with Sighting-telescope Attachments for Ordnance.
Year: 1899

page_text: Date of Application, 18th July, 1899 ·
Complete Specification Left, 22nd Mar., 1900-Accepted, 28th Apr., 1900
PROVISIONAL SPECIFICATION.
Improvements in or connected with Sighting-telescope Attachments
for Ordnance.
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), to be as follows:-
The present invention relates to telescope attachments for ordnance, and con-
sists in so connecting the telescope with its supporting bar, that the mechanism
for effecting the lateral adjustment of the telescope, is isolated in the highest
possible degree from the effects of firing. An additional feature of the inven-
tion a device to facilitate reading the lateral deflection of the telescope.
The supporting bar or rod of the telescope is adjustably secured to the gun,
and has rigidly connected to it a hollow box, forming the head of the supporting
bar. This head carries the sighting telescope, and also the mechanism for
effecting and reading off the lateral deflection. The telescope is carried in a
protecting sleeve, the flattened foot of which forms a cover for the hollow box,
and is provided on its underside with two studs. The front stud is cylindrical
and capable of turning in a socket in the head of the supporting rod, thus per-
mitting the telescope to swing upon its axis in a horizontal plane. The second
or rear stud connects the telescope with the adjusting mechanism. This stud
is rectangular in cross section, and enters a slot in a cylindrical disc which rotates
in a lug on an internally threaded sleeve. This sleeve works in a straight line,
and is traversed to and fro by a hollow screw threaded spindle journalled at both
ends in the head of the supporting bar, and furnished with a milled head by
which it may be rotated. By the aid of a graduated collar on the spindle in
conjunction with a pointer affixed to the head of the supporting bar, fractions
of revolutions of the spindle may be read off. To read whole revolutions of
the spindle, the spindle is provided with an internal screw thread in which
works a second hollow screw threaded spindle. This latter has an endway motion
to and fro, but is incapable of rotation, and is guided by a central pin in the head
of the mounting. It will thus be seen that for one complete revolution of the
traversing spindle, forming the internally threaded sleeve in which this second
spindle works the latter will be moved out, or in, the space of one pitch. The
amount of endway motion imparted to the spindle, may be read off from a
graduation marked upon its outer end, wherefrom the number of complete
revolutions of the traversing spindle may also be ascertained.
To adjust the telescope the milled head of the traversing spindle is turned in
one direction, or the other, whereby the straight guided sleeve is moved in the
corresponding direction. This traverse motion of the sleeve is communicated
through the square stud to the telescope which thus receives a swinging move-
ment upon its front cylindrical pin.

page_text: The pitch of the thread upon the traversing spindle is preferably so regulated
that one complete revolution of the spindle will deflect the telescope through
one degree.
COMPLETE SPECIFICATION.
Improvements in or connected with Sighting-telescope Attachments
for Ordnance.
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 a telescope attachment for ordnance, and
consists in so connecting the telescope with its supporting bar, that the mechanism
for effecting the lateral adjustment of the telescope, is as completely isolated
as possible from the effects of the firing, the wear of the moving parts con-
siderably reduced, and the accuracy of the adjustment is thus preserved per-
manently. An additional feature of the invention is a device to facilitate the
reading of the lateral deflection of the telescope.
The invention will now be described with reference to the accompanying
drawings in which-
Fig. 1 is an elevation of the upper portion of the telescope attachment.
Fig. 2 a vertical longitudinal section of the same (the telescope being in
elevation).
Fig. 3 a cross section on the line G H of Fig. 2.
Fig. 4 a horizontal section on the line J K of Fig. 2 (the various parts as drawn
corresponding to the central position of the telescope) and
Figs. 5 and 6 are each sections corresponding to Fig. 4 and partly in elevation;
the only difference in the figures is that opposite angular positions of the various
parts are shewn, resulting from the different adjustmems of the telescope.
Rigidly connected to the supporting bar which is adjustable in a supporting
bracket attached to the gun, is the supporting head b. This latter carries the
telescope y and encloses the mechanism for adjusting and reading the lateral
deflection. The telescope is enclosed in a protecting casing e, provided with
front and rear sights for roughly obtaining the elevation and lateral deflection,
and has a flat foot r which closes the open top of the supporting head, and down-
wards from the said foot there extend two pivots and e The pivot is
cylindrical, and is mounted to turn in a bearing sleeve of formed in the supporting
head b, so that the telescope can turn on its axis in a horizontal plane.
The pivot e is square in cross section, and serves to connect the telescope with
the adjusting device. This latter consists of the hollow screw spindle i. and
its internally threaded sleeve h. The screw spindle i is journalled at both ends
in the supporting head, and is held in place by a nuts, and the spring washer t.
The rotation of the spindle is effected by means of a 'milled head 7.
Upon a collar p on the spindle i is engraved a scale u, which with the help of

page_text: a fixed point q on the supporting head, enables the fractional revolutions of
the spindle to be read off. To enable whole revolutions to be read, the spindle.i
is screw threaded internally to receive a hollow, threaded spindle m. A guide
pino, of non-circular cross section, and held rigidly (so as not to rotate) in the
cap n enclosing the nuts, passes through the hollow spindle i, and through a
hole in the spindle m of similar cross section to the pin, and so prevents it from
rotating. By this means the spindle i when rotated will cause the spindle m
to move endways upon the pin o. The extent of this motion may be read off
on a scale e engraved upon the outer surface of the spindle m, and to which the
surface of the milled head serves as a mark. The scale is preferably so
arranged that it will shew the number of complete revolutions made by the
spindle i.
The sleeve h of the screw spindle is guided in a straight horizontal path by
a bolt square in cross section. The bolt also takes up the pressure of the
sleeve when the gun is fired and so protects the fine thread on the sleeve and
spindle. Should it be required to more efficiently protect the thread, a second
guide pin may be inserted on that side of the sleeve h near the pivot d.
To transmit the straight line motion of the sleeve h to the pine working on a
curved path, a ring g is mounted to rotate in a recess in the sleeve, in the slot.
of which latter the two surfaces of the driver pin e parallel to the axis of the
telescope are guided, while the slot in the direction of the axis of the telescope
allows a slight amount of play to the pin e. The rotating ring and its slot .r
permit the pin e to move in the arc of a circle within certain limits.
The guide pink of the sleeve h, passes through the lower part of the driver
pin e with a certain amount of side play, but fits closely at top and bottom, and
thus forms a steady guide which takes up the vertical pressure when the gun
jumps and transmits it to the supporting head.
The above described construction of telescope attachment acts as follows:-
The dotted line C, D in Figs. 5, 4 and 6 indicates the central position of the
telescope and the dotted line A B in Figures 5 and 6 the position of the axis
of the telescope.
In the normal position of the telescope, the various parts assume the position
shewn at Fig. 4. To laterally deflect the telescope the head of the spindle i is
turned in one direction or the other, thus advancing the sleeve in the corre-
sponding direction. The pin e is thus moved and the telescope is swung on the
pivot The rotation of the spindle simultaneously causes a longitudinal
motion of the spindle m, which according to the direction in which the spindle i
is rotated is either protruded from or withdrawn therein.
The maximum deflection of the telescope to the left or right, is indicated in
Figs. 5 and 6 by the lines A B.
Corresponding to this maximum deflection the various parts of the mechanism
for adjusting and reading the deflections will assume the positions shewn in.
Figs. 5 and 6.
If the pitch of the thread on the spindle i be so calculated that one revolution
of the spindle is equal to an angle of rotation of the telescope of 1° then the simul-
taneous movement of the spindle m corresponds to an angle of rotation of the
telescope of 1°. If therefore the scale on the collar of the spindle i and that
on the spindle m be correspondingly arranged, the whole degrees can be read
off from the scale on the spindle m and the fractions of degrees from the scale on
the spindle. When the telescope is in its central position the zero points of
the scales must coincide with the fixed marks.
Having now particularly described and ascertained the nature of the invention
and in what manner the same is to be performed I declare that what I claim is:---
1. A telescope attachment for ordnance in which the telescope is carried by two
pivots in the supporting head, in such manner that it is capable of rotation
about one pivot d, while a parallel guided sleeve engages the other pivot e, and

page_text: by the movement of the sleeve (effected by a screw spindle) the telescope is
laterally deflected substantially as set forth."
2. A form of construction of the telescope attachment according to Claim 1,
in which the driver pin e is made square and journalled in the slot of a ring g
rotating in the driver sleeve h, so that it can adjust itself radially when the tele-
scope is moved about its pivot substantially as set forth.
3. A form of construction of the telescope attachment according to Claim 1,
in which the driver pin e transmits the vertical pressure of the telescope, caused
when the gun jumps, to the supporting head through a guide pink substantially
as set forth.
4. A form of construction of the telescope attachment according to Claim 1,
in which a second non-rotating spindle m is arranged within the spindle i which
operates the adjusting sleeve, said spindle receiving on the rotation of the first
spindle an end way motion, for the purpose of enabling the fractions of degrees
to be read off on a scale applied to the first or rotating spindle, and the whole
degrees of the angle of rotation of the telescope to be read off on a scale on the
reciprocating spindle, substantially as set forth.
5. The arrangement and construction of parts composing the telescope attach-
ment for ordnance constructed and acting substantially as described and illus-
trated with reference to the accompanying drawings.
T
1
1 1
1000
BREWER & SON,
London and Leeds, Agents for the Applicant.