US812400A - Indicating-target. - Google Patents

Description

PATENTED FEB. 13, 1906.

R. M. v. BREMER. INDIGATING TARGET. APPLICATION FILED JULY 25. 1904.

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lullin! R. M. V. BRBMER. INDIGATING TARGET. Arrnxou'xon Hun JULY as. 1904.

Z//b'tnSe/s JWM ,UNITED sTATEs PATENT OFFICE. REN MARIE vIcToR BREMER, or scHAERBEEcx-BRUSSELS, BELGIUM.

lNDlCATlNG-TARGET. y

Specication of Letters Patent.

Patented Feb. 13, 1906.

Application filed July 25, 1904. Serial No. 218,143.

To all whom it ny concern,.-

Be it known that I, REN MARIE VICTOR BREMER, a subject of the King of Belgium, residing at Schaerbeeck-Brussels, Belgium, have invented a new and useful Improvement in indicating-Targets, of which the following is a specification.

Thls invention relates to an improvement applied to automatic indicating targets w 'ch are arranged to rotate upon a pivot, and has for its object the provision of a pivoting target of which the sensitiveness can be regulated at will and of which the operation is absolutely sure and exact. Further, the said improvement permits an easy construction of a target, so that it is protected from injury by projectiles, carriage, or Weather.

This invention is applicable to targets of all shapes and of one of more sections, giving outlines, disks, or rectangular faces, and permits the employment of targets in fixed positions or movable by horizontal movement or by eclipse.

The invention consists, essentially, in that the pivoting target may be arranged to lean at an angle toward the direction oil firing by the action ofits own weight or i a counterbalance-weight and may there rest upon a fixed abutment, so as to oppose in its position of rest a predetermined force of resistance to the shocks ofthe projectiles. The proint of abutment is situated, preferably, in

ont of the center of rotation of the target, so that the lever forming the support of the latter is in an inclined position toward the direction of firing, and the angle of inclination of this lever forms one of the factors on which depends the force of resistance to the shock of the projectiles. Having regard to other factors effecting this force, such as the moment of the weight of the target and the length of the lever supporting the target, the sensibilit to shock may be determined and regulate by the angle of inclination that is given to the pivoting-lever supporting the of t e force of resistance in such manner that it would corres ond to a determined amount, so that the w ole energy of the rojectiles may be absorbed by the target. s a consequence of this means of regulation the imipoved target is applicable for all kinds of earms-such as rifles, field-artillery, and the like-and may be utilized for all distances and kinds of ranges from the smallest to the largest. The system, also, of regulation havtargpt. This will permit the exact regulation ing regard to the surface of the target enables targets to be arranged, which, while sensible to the shock of rojectiles, are uninfluenced by the force of the wind.

To carry out this invention,'the angle of oscillation of the lever-supportpf the target is limited by two abutments, of which that on one side forms the stop in the inclined position of rest and that on the other side the 6:

s'top for the movement of :the recoil produced by the shock of the projectile. l The rocking support of the target carries on one side a block or other similar arrangement` situated so as to operate a contact or elec- 7c trical commutator by which the required signal or indication of its movement is effected. The arrangement'of the rocking arm is adapt-1l ed so that the pivot of rotation and the lower parts of the arms, as well as the electrical ycon-l tacts, are inclosed in a cover or case -placed on the ground, so that this delicate'part of the apparatus is protected againstthe weather and against damage from stray.,vv

It is advantageous to reduce 8c projectiles. the oscillation of the rocking arm lto the smallest possible amount, partlcularly where. the targets are composed of many sections; but since this reduction of movement will produce the diminution in the duration of pieces together when the recoil has ceased, so

that the two pieces of contact brought together by the first movement of the target will retain their metallic contact during some portion of the return movement of the target.

In order that this invention may be the Ic better understood, it Will now be described with reference to the drawings hereto annexed and to the letters marked thereon.

Figs. 1 and 2 show diagrammaticallyin elevation two simple forms of this improved tarrc get. Fig. 3 shows in sectional elevation the target made in several sections, such as representing the outline of a man. Fig. 4 shows the same tar et in front elevation. Fig. 5

shows in sectional elevation, to an enlarged I:

scale, a detail of an electrical contact operat ing by the closing of the circult.

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For this purpose the fixed 9c The apparatus is composed of a rod or arm a, carrying the target b and a block; c. This arm can turn upon an axis d and is limited in its movement of oscillation by the abutments e and f. The arm a is, by plreferenca-bent as an elbow in order that in t e sup orted mass the center of gravity (sa at 1v) wil 'be situated outside the vertical ane assi'ng through the axis of rotation i Un er these conditions the arm ais inclined as regards the ven tical by itsown weight and is held in a position of rest upon the abutment e. The osition of this abutment regulates the inc ination of the arm a. The angle of inclination, the weight causing the target to lean forward, and the length of the arm ofthe supportinglever are the factors which determine the resistance of the target-that is, its sensibility of movement-against the shock of the projectiles coming against it from the direction y. The block c is designed to set in action the apparatus of the electrical contact g, Olperating by the closure or the breakin of current and influencing an electrica signal or indicator 71 placed near the firer.

In the example shown in Fig. 2 the armsupport a of the target is formed as a bell.- crank. It is rovided with a horizontal arm i, carrying a alance-weight k in regulatable position. This disposition constitutes an auxiliary means for the regulation of the resistance to movement of the target. This auxiliary means of regulation is notably emloyed in targets of multiple sections and has or its object the power to give the same inclination to the arms of all the sections and to compensate the differences between the lengths of the supporting-arms a by the position of the counterbalance-Wei ht c-that is to say, b the modification of t e moment of the weig t with which the target is pressed against the abutment e. Different sections o the target possess thus the same forces of resistance to the shocks of the projectiles, While at the saine time having the same angle of inclination from the vertical constitutes a facility for the construction of this form of target.

In targets composed of multiple sections, as in Figs. 3 and 4, each section b is fixed to an independent oscillating arm a. The arms each carry a block c, which correspond also to contacts g. The arms a, laced one beside the other, as is indicated in igs. 3 and 4, turn, by preference, upon the same axis d. The lower parts of the arms a and the contact apparatus Iq are all inclosed in a case m, provided with a s ot or slots of which the edges e l{ constitute the abutments to-limit the osci ating movements of the arms a. It is of utility to reduce these movements to the smallest possible amount in order not to create too-great deviations between the different sections b of the target. As this small movement may produce evidently a very small duration of contact in the" electrical indicating parts, which may result in a failure in the action. of the indicator, it is advantageous to form the apparatus of contact so that this would permit a prolongation o contact during the return movement of the target or section of target to its initial osition. a

In Fig. 5 is-.s own in vertical section the forni of construction of contact apparatus according to this principle for operating by the closure of the current. At the Asame time the same principle of construction can be easily adapted to an apparatus operating by the breakage of an electrical current.

The a aratus is fixed upon a support g, attache in any convenient manner to the interior of the case m or forming an integral part of the latter.

The pieces of contact are composed of two pistons n o, moving in the cylinder p g and pressedtoward the tar etarm by springs 1' t, operating on the shoul ers formed upon these pistons. The cylinder q with its piston o is com letely insulated from the supportingbrac et g. The piston o is arrested at a short distance from the other piston n, which traverses the bracket g. The two pistons are preferably provided with round ends in platinum. The forward piston n, carries a continuation s, slightl curved, placed so as to receive the thrust o theblock c of the arm a. The spring 1^ of the rearward iston of contact o is slightly stronger than tlie spring t of the forward iston fn. s. Each piston may carry a termina to which may be attached the conductors of the source of electricity. At the same time by reason of the insulation between p and q the terminals might be fixed to such cylinders. It will be readily understood that when the piston s rnl is thrust backward by the block c moving with the oscillation of the arm a, the piston n comes in contact-with the-piston o, the two springs tr being compressed under this action. When the armareturns to its initial position, the springs thrust the two pistons o n forward. By reason of this movement and the differential IIO forcesof the springs, the two pistons maintain I their metallic contact during a large part of the return oscillation of the arm a, which insuresa duration of contact sufficient to overcome the inertia of the parts of the electrical apparatus operated by the closure of circuit by the contacts n and o. The springs r t constitute at the same time further means of adjustment, and their resistance is thus added tov the forces of resistance of the target, as hereinbefore described.

H aving now described my invention, what I claim, and desire to secure by Letters Patent, isn l1. In combination, a series of separate arts of the target all supported on distinct evers, a pin-support for t esame at the basis i i l l i IIS ward the lin of ring, one part of said slot forming a means of support of the tar etarms at an inclined osition of rest, the ot er part of the said slot ibrming an upward check to the recoilof the said targets, and means for making electrical contact when the targets are driven back.

2. I n combination, a series of separate parts of the targlt all held in a position of rest with their wei@ t assin beyond their supports toward tche iiing (lection, a pin-support for the same at the basis of a case, a contact-piece upon the outer face of each bar, and two spring-pressed pistons, adapted to close together under the recoil of the beam,

3. In combination, a series of separate parts of the target, all held in a position of rest with their Weight passing beyond their support toward the firlng directlon, and a counterbalance-weight extended toward the direction of ring to give an adjustable control to the resilience of the target-faces.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

REN MARIE VICTOR BREllI-ER. Witnesses:-

A. GRACE, GREGORY PHELAN.

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