DE619330C - Bearing telescope for aircraft pilots - Google Patents

Description

GERMAN EMPIRE

ISSUED ON SEPTEMBER 28, 1935

REICH PATENT OFFICE

PATENT LETTERING

M 619330 CLASS 72 f GROUP 12 oe

ActiengeseUschaft C, P. Goerz Optische Anstalt,

Actiova spolecnost K. P. Goerz opticky ustav

in Pressburg, Czechoslovak Republic *)

Bearing telescope for aircraft pilots

Patented in the German Empire on June 22, 1934

The invention has the purpose of providing the pilot with a particular device for dropping bombs specific aircraft to indicate the course that is behind the pilot's seat a target observer posted on a dropping telescopic sight in order to achieve a throwing hit is desirable.

According to the invention, this purpose is achieved with sufficient accuracy by a remote

is to pipe reaches whose lying in the vertical center plane of the aircraft line of sight having a fixed inclination of about 30 ⁰ to the vertical, and in one of its image planes with a system homocentric convergent direction marks equipped, the imaginary recorded as optical image of the front part of the soil Angle scale appears with continuous graduation marks, whereby each of these direction marks can be highlighted by the lighting up of a light bulb arranged at its upper end outside the lens field of view, where-

_ with the latter only lights up when the direction mark illuminated by it into the through a vertical axis, azimuthal rotatable Observer riflescope set vertical target plane falls.

The direction marker system can be located on one of the image planes of the bearing telescope lying on the ground glass. Likewise, each or only some of the direction marks can be marked with a pair of lamps arranged at both ends are illuminated!

The subject of the invention is shown in the drawing in an exemplary embodiment, namely Fig. 1 shows the Bearing telescope in longitudinal section, Fig. Ia the head of the bearing telescope with through dimmed lights generated directional marks, Fig. 2 shows the outline of its directional mark system, 3 the eyepiece face field with direction mark and lamp system, 4 shows the target observation telescope in a side view with an angle transmission device in section, Fig. 5 loop contact arrangement on the observer telescopic sight in Layout·.

According to Fig. 1, the objective ζ is arranged in the housing tube 1 of the bearing telescope, the focal point F of which coincides with that of the front lens 3 of the uni-reversing system, while the focal point F 'of its rear lens 4 falls into the rear surface of the plane-parallel glass plate 5 and with the focal point

*) The patent seeker stated as the inventor:

Dr. Christian von Hofe in Vienna,

$ 19830

of the eyepiece 6 co-indexed. If the glass plate 5 is matted on the rear surface, the eyepiece 6 can be omitted. A homocentric is now on the glass plate 5. Convergent directional marking system etched on the following basis: If O ₀ (Fig. 2) is the base point of the lens as the center of a fictitious angular scale on the ground with continuous graduation marks O ₀ ο, O ₀ + ι, O ₀ + 2, O ₀ H- 3, O ₀ + 4, this scale will be imaged by the objective 2 in its focal plane O ₁ F in such a way that the image has the center o ' ₀ , the eccentricity of which from the optical telescope axis results with Fo'o = ftga, if / is the lens focal length and <x is the angle of inclination of the line of sight from the vertical.

If one forms the convergence point O ₀ "with the direction lines O ₀ " o ', O ₀ + 1', O ₀ + 2 '...

by the relay lens system 3-4 from, as "the direction mark system with the point of convergence οό 'and the direction marks obtained as the image in the eyepiece image plane of Fig. 3. In the extension of each of these direction marks ₀ the base is outside the glass plate 5 in Fernrohrflanseh I per a very small incandescent lamp 7, the central contact plate _{"J a} " of which sit on a contact screw 9 provided in the hard rubber ring 8. An insulated wire goes from each of these screws to that of the ring-shaped sliding contacts o ^, + 1 ^ + 2 ^, H- 3 ^ ..., whose radial direction is parallel to the horizontal, longitudinal axis of the aircraft oo ₀ those Include lateral angle that corresponds to the assigned direction mark 0 "- O ₀ ', H ^ 1" - ^ O ₀ ', + 2 "- O ₀ ', + 3" _{- O 0} ' etc. is equivalent to. For all directions lying on one side outside the field of view there is only one long slip ring sector ~ fc 4 ^ on each side Telescope is arranged so that the two light bulbs o "-o" indicating the center direction glow when the vertical target plane of the telescope passes through the longitudinal axis of the aircraft. passes through. The cable connection of the lamps 7 with the sliding contacts o _K , + i. # + 2ß, + 3k and the contact spring 10 with the battery B must be carried out in such a way that only that lamp or only that pair of lamps lights up which illuminates the direction mark which includes the same lateral angle to the central direction o-ö as the vertical target plane of the observer's riflescope. Only when one of the two pairs of lights arranged on the outermost sides of the field of vision lights up, a very specific side direction is not marked, but it is only indicated that the pilot has to steer to the right or left until the direction of the through the vertical target plane adjusted to the target observer's telescope approaches the direction mark adjacent to the last direction mark, whereupon the lamp corresponding to this direction (-j- or -3 ") lights up, and so on, until finally the pair of incandescent lamps" -o "indicating the center direction lights up.

The observer telescopic sight Z is mounted in the usual way by means of a ball pivot K so as to be able to pivot both azimuthally and in each vertical plane and with a. a target plane perpendicular to the vertical axis Ra rotatable inlet reflector R -and equipped with a circular level L whose bladder. Focal point of the lens whether is arranged.

The azimuthal setting of the line of sight is done here by a grip ring G provided on the telescope housing, while the setting of the vertical angle of inclination of the line of sight is effected in the usual way by pivoting the entry reflector R about its horizontal axis Ra by means of a gear (not shown here).

Instead of the open lamp according to FIGS. 1 and 3, through their respective glowing the The direction mark in question is highlighted, you can also use dimmed lights by According to Fig. ia the lights behind distributed according to the direction marks narrow slots j in the housing tube extension above the plane of the drawing and used thin, bare wires as direction marks, so that each wire when the lamp assigned to it lights up as a thin, bright, shiny line is seen in the field of vision.

The type of use of this direction finding device is now very simple: First of all, brings the target observer puts the target to be approached into the sight of his telescope, whereby the Contact spring 10 puts on that sliding contact, which through the horizontal target direction Illumination of the assigned to this direction; s neten lamp or lamp pair it indicates. If the pilot now steers according to this indicated direction mark, the target observer approaches in by keeping to the target the sight the point of the slide spring contact steadily that indicating the center direction Contact o ^, so that when it is

Touch the pair of lights indicating the center direction o "- o" or in the case of cross winds a side light showing the course direction over the ground lights up continuously.

Claims (5)

Patent claims: i. Bearing telescope for aircraft pilots, characterized in that its in the vertical center plane of the aircraft is an unchangeable finish line Has inclination (α) relative to the vertical and convergent homocentrically with a system in one of its image planes Direction marks is equipped, which is recorded as an optical image of the front part of a on the ground imaginary angle scale (Fig. 2) appears with continuous graduation marks, where each of these direction marks by lighting up one arranged at its upper end outside the lens field of view Light bulb (7) is highlighted, each of these lights only then lights up when the direction mark assigned to it in the direction indicated by a vertical axis, azimuthally rotatable observer riflescope set vertical target plane falls. 2. Bearing telescope according to claim 1, characterized in that the direction mark system is etched on a ground glass lying in one of the image planes of the telescope, in which Case the eyepiece lens system can be omitted. 3. Bearing telescope according to claim 1 or 2, characterized in that each or only some of the homocentrically convergent direction marks of the system by one at each of their two ends The pair of lamps is highlighted when they light up. 4. Bearing telescope according to claim r or 2 and 3, characterized in that that the lights or pairs of lights highlighting the direction marks by one of the azimuthal rotation electric angle transmission device driven by the observer's telescopic sight can be switched on or off. 5. Bearing telescope according to claim 1 and 3, characterized in that the Directional marks are designed as thin, bare wires, while the light behind the slits of a covering them Pipe diaphragm are arranged. 1 sheet of drawings