Improved Indicating Target.
Year: 1893

page_text: Date of Application, 8th June, 1893-Accepted, 8th July, 1893
COMPLETE SPECIFICATION.
Improved Indicating Target.
I, RUDOLF KOLBAN of 105B Friedrichstrasse, Berlin in the German Empire,
Merchant 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 targets for ball practice and consists in an improved
construction or arrangement of said targets by means of which a reliable indication
at the firing stand of the ring hit by a shot is rendered possible. This object is
attained by forming the target of rings composed of moveable segments in such a
manner, that when one of said segments is hit by a ball, this segment for a short
time closes an electric circuit, in consequence of which an electrical indicating
apparatus of known construction inserted into the circuit at the firing stand indicates
the number of the ring hit.
On the sheet of drawings appended hereunto
Fig. 1 shows a front view of part of the face of the target and part of the
intermediate and back plates of the same shewing the arrangement of contact
buttons and connecting conductors.
Fig. 2 a cross section of the target.
Fig. 3 a side view of a segment and Fig. 4 a front view of the same and of one
set of conductors.
a
The target A is composed of a cylindrical casing 6 with a circular plate 61
preferably formed in one piece with the same, into which casing annular concentric
segments a of suitable width are fitted so as to fill completely the circular area of
the casing b, (Fig. 1). The radial height of the segments corresponds with the
breadth of the target rings. Each segment is provided with a shank or shaft c,
which passes through the plate b and an intermediate plate 63 fixed removably in
the casing b. Upon the end of the shaft a plate d is firmly fixed, carrying
contact plate d³ separated from it by an insulating layer d'. Each shaft is further
surrounded by a helical spring finserted inside of the plate between a shoulder
formed on the shaft and the intermediate plate 63 (Fig. 2). At the back the casing
is closed by a back plate g upon which for each ring of seginents two annular
conductors are fixed by means of bolts 2, the bolts and conductors being insulated
from the plate g and so arranged that the heads of each pair of bolts and h³ are
within reach of the contact plate d² of one of the segments a and form contact
buttons so that they can be covered or conductively connected by the same.
annular conductors held by bolts 2 are electrically connected to the battery, while
the conductors held by bolts h' are connected to the respective wires leading to the
indicating apparatus or vice versa. The bulls eye of the target consists of a
cylindrical block formed with a shank and arranged similarly to the segments.
The
The action of the target is briefly as follows: When one of the segments is hit
by a ball, it is pushed back by the impact and the corresponding contact plate d²
pressed upon two bolt heads h¹ h³, whereby a circuit is closed if only for a short
time, which however suffices for the current to operate the indicating apparatus and
make a shutter or its equivalent marked with the number corresponding to that of
the ring hit fall down or otherwise exhibit the number. The self acting return of
the segment hit into its normal position and the consequent interruption of the
current is effected by a spiral spring placed on the shaft c of the segment. The
segments a are exchangeable.

page_text: 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
1. The arrangement or construction of a target substantially as hereinbefore
described and illustrated by the drawings and for the purpose set forth.
2. The combination of a target arranged or constructed substantially as herein-
before described with an electric battery, an indicating apparatus placed at the
firing stand, and wires connecting the same in such a manner that the number of the
ring hit is indicated by said apparatus.
3. A. target consisting of a number of exchangeable segments curved concentri-
cally with the centre of the target and so arranged that on being hit by a shot they
are pushed back and establish a conductive connection with an electrical indicating
apparatus placed at the firing stand in such a manner that the number of the ring
hit is indicated by said apparatus substantially as hereinbefore described and
illustrated by the drawings.
Dated this 7th day of June 1893.
R. J. URQUHART,
57, Barton Arcade, Manchester, and 5, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.