US1092425A - Apparatus for marine aiming-drill. - Google Patents

Description

RBOH'N.

APPARATUS FOR MARINE A-IMING DRILL.

APPLICATION FILED OCT. 8, 1913.

1,092,425. Pat ented Apr. 7, 191

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F.BOHN. APPARATUS FOR MARINE AIMING DRILL.

\ APPLICATION FILED OUT. 8, 1913. 1 092,425 Patented Apr. 7, 191

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By A; flit F. BOHN.

APPARATUS FOR MARINE AIMING DRILL.

APPLICATION FILED OGT.8,1913.

1,092,425. Patented Apr. 7, 19M

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F. BOHN.

APPARATUS FOR MARINE AIMING DRILL.

APPLICATION FILED OUT. 8, 1913. 1,092,425. Patented Apr. 7, 191

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' TED STATES FRIEDRICH BOHN,

OF KIEL, GERMANY.

APPARATUS FOR. MARINE AIMING-DRILL.

Application filed October 8, 1913.

To all whom it may concern Be it known that I, Fnmmucrr BOI-IN, manufacturer, a subject of the Emperor of Germany, residing at Sackgasse 7/9, Kiel, Germany, have invented certain new and useful Improvements in Apparatus for Marine Aiming-Drill, of which the following is a specification.

In marine shooting practice or aiming drill respectively, targets are used, with which the movements of a distant aim relatively to the sight-line of a marine-gun on a rolling ship are imitated by moving the target with alternate velocity up and downward or in lateral directions (rolling aim).

The present invention relates to targets of this type, and more particularly to an improved arrangement, by which besides the up and down movements lateral ones, or besides lateral movements vertical displacements, as desired, are imparted to the target in a particularly appropriate way, the invention relating further to the provision of a separate target to be aimed at and a separate target to be shot, these separate targets being hereinafter called aiming-target and shooting-target.

The accompanying drawings show the subject matter of the present invention.

Figure 1 is a front view of the improved apparatus; Figs. 2, 3 and 4c are respectively a front View, a sectional side view, and a sectional fragmentary plan view, of the target with the parts attached thereto and with one guiding-bar; Fig. 5 is a front view of the arrangement of a separate aiming-target and a separate shooting-target; Fig. 6 shows the employment of the apparatus in horizontal position, so that the principal movements are effected in lateral direct-ions, to which vertical movements may be added.

1 is a vertical stand or column for a target 2 to be moved. The latter is driven up and down by a motor and driving-gear, which is located in the casing 3 in a way known in the art and which is coupled with the double-threaded worm 4 arranged in the interior of the column, the target engaging said worm by a nut 5. According to the invention, guiding- bars 6 and 7 of any appropriate shape are arranged on the column 1. The target 2 is, for imparting thereto besides the up and down movement a lateral displacement, brought in engagement with one or the other of said guiding-bars and receives then during its longitudinal displace- Specification of Letters Patent.

Patented Apr. 7, 1914-.

Serial No. 794,002.

ment at the same time a lateral movement, depending on the shape of the guiding-bar. For this purpose, the target 2 is not directly fixed on the nut 5 but the latter carries a swing-plate 8 from which the target is suspended by two links 9, the latter being pivotally connected at their upper ends by nuts 10 with the swing-plate and at their lower ends by nuts 11 with the target. The fastening of the swingplate 8 to the nut 5 is, besides through the set-screws 12, effected by an outer fly-screw 13, which engages with a slot 14 in the target. Said slot is so designed that the lateral parallel movements of the target, upon swinging of the links 9, are not prevented by the stem of the screw 18. On the lower edge of the target, pivotal members 15, 16 are so arranged that they can be brought into the two positions shown in Fig. 3. Upon the pivotal members being in the position shown by full lines in Fig. 3, they do not influence the motion of the target. If, however, one of said pivotal members is brought into the position shown by dotted lines, it bears against the corresponding guiding- bar 6 or 7 respectively, and, upon the target being then moved up and down, said pivotal member 15 or 16 respectively follows the oscillations of the corresponding guiding-bar and effects thereby a corresponding movement of the target around the fulcra-lO of the links 9.

In the construction shown, provision is made that the target can be firmly connected with the swing-plate 8, so that the target moves up and down without lateral displacement. This connection is, of course, only to be made when the coupling of the target with one of the guiding-bars is disengaged, that is when the pivotal members 15 and 16 are in their position of rest. To insure this, the connection between the target and the swing-plate 8 is produced with the aid of a cotter 17, which serves also for arresting the pivotal members 15 and 16 in their working plates 18, on which the pivotal members 15 and 16 are arranged, brackets 19 are provided. The pivotal members as well as the brackets carry coinciding holes 20 into which fits the cotter 17 For each apparatus, only one cotter is provided. Upon the pivotal members being swung upward and the cotter 17 being inserted in the holes 20, the pivotal members are fixed in their working position. For the purpose of bringing the position. For this purpose, on the base cotter, however, into the position shown in Fig. 3, for fixing the target against lateral displacements, the previously existing connection between the target and one of the guiding-bars must be disengaged. Damages by a double fixing of the target can, therefore, not happen at all.

Sometimes, it may be suflicient to provide the apparatus with one of the guiding-bars only, for instance with the bar 7. This construction of the apparatus is represented in Figs. 5 and 6. The devices for adjusting the guiding contrivance may in this case be simplified, for instance by using the flyscrew 13 itself, when inserted in the hole 17, for coupling the swing-plate 8 with the target if the latter shall accomplish a rectilinear movement only. For the engagement with the bar 7 to be effected in the other case, also a guidingroller 21 may be employed (Fig. (3), which can be easily inserted and removed.

If the apparatus is not only used for aiming-drill, but also for shooting with smallarm ammunition, allowance must be made for the fact that the mechanism of the apparatus must not be damaged by the cartridges and that the sightline and gun-axis lie at different parallel levels separated by a larger or smaller distance. This is, according to the invention, effected in such a way that a separate aiming-target and, separate therefrom, a separate shooting-target is provided. As shown in Fig. 5, for instance, on the plate 2 connected with the nut 5 adjustable rods 22 and 23 are provided, of which the former carries an aimingtarget 24, for instance the picture of a ship, while the other carries a shooting target 25 upon which small-arm ammunition is shot. By rods 26, 27 both targets can also be adjusted in their position of height.

Fig. 6 shows how the apparatus can also be used in horizontal position, so that the principal movement happens in lateral directions. For this purpose, the column 1 is removed from its supporting socket and mounted in horizontal position on two stands 28 and 29. The plate 2 carries here directly the shooting-target 25, whereas laterally therefrom, on arms 30, two aiming-targets 24 are arranged, which are preferably adjustable in guides 31.

What I claim, is:

1. In an apparatus for marine aimingdrill, in combination, a target, means to move the latter up and down consisting of a motor-driven worm and a nut to gear with the latter, pivotal links to suspend said target from said nut, guiding-bars coupled with said target, and means to impart to the target by said coupling beside said up and down movement lateral displacements, substantially as and for the purpose set forth.

2. In an apparatus for marine aimingdrill, in combination, a target, means to move the latter up and down consisting of a motor-driven worm and a nut to gear with the latter, pivotal links to suspend said target from said nut, pivotal members on the target, guiding-bars adapted to be eventually coupled with the target by said pivotal members, and one cotter adapted to arrest said pivotal members in working position and to fix also the target against the nut, substantially as and for the purpose set forth.

3. In an apparatus for marine, aimingdrill, in combination, an up and down movable target, means to move the latter also in lateral directions, a separate aiming-target on one side, and a separate shooting-target on the other side of said target, and means to adjust both the latter targets in horizontal and vertical directions, substantially as and for the purpose set forth.

4. In an apparatus for marine aimingdrill, in combination, an up and down movable target, means to move the latter also in lateral directions, a separate shootingtarget directly connected to the target, and adjustable aiming-targets on both sides of said shooting-target, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

FRIEDRICH BOI-IN.

Witnesses JULIUS Rornn, KARL FRIEDRICH FRENTZEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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