DE158097C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The present invention relates to a device by means of the graphic Signs as well as drawings and photographs in their original form after a remote station electrically can be transferred.

The known method is used in which the transparent image (photographic plate, film, award)

ίο on a single or even a series of .Selenzellen is projected and the increase or decrease in the electrical line resistance of selenium due to different levels of exposure on the donor point a corresponding creates an electric light effect on a light-sensitive paper at the receiving point.

The invention is based on the remote image transmission device in which an electrical connected to the line circuit of the selenium cell at the receiving station Lamp, the resistance of the changing due to the selenium switch-on of the transmitter station Long-distance line lights up accordingly stronger or weaker and thus on the line by line copy paper passed over its entire surface in front of an exposure aperture causes a photogram, which represents a true negative of the transparency on the donor point, as the passing takes place in the same way and synchronously at both points.

The line-by-line passing of the transparency (original image) peculiar to the invention on the one hand and the copying surface on the other hand in front of their exposure openings takes place through a system of perpendicular and horizontal solenoids passing through

located switching

continuous rotation

rolling with alternately insulating and conductive outer surface alternately received current and lose. Of these solenoids, the horizontal ones cause the lateral displacement a frame movable in a second frame, while the vertical Solenoid causes the vertical displacement of both frames in a known manner. In the laterally movable frame, the transparency is respectively. the copy area clamped.

In the drawing represents

Fig. Ι a cross section through the chambers of the transmitting and receiving apparatus,

Fig. 2 (from the right) and Fig. 3 (seen from the left) the front views,

4 and 5 show the circuitry of the local circuits of both stations and of the Selenium remote circuit.

The selenium cell α on the donor station is in a light-tight box b,. through whose window c the rays of an external light source, a lamp e fed by the battery ρ , fall on the selenium.

The opening c is closed to the outside by the negative plate (film or tracing) f , which is immovably received in a frame g , which in turn can be moved sideways to and fro in an outer frame h along the straight guide rails ii ^l.

The outer and inner frames h and g

together are arranged vertically movable downwards on the outer wall of the box b.

The lateral to-and-fro movement of the inner frame g is caused by solenoids kk ¹ , which engage the vertical driver / inner frame g by means of their cores mm ¹ , the downward movement by the dead weight of the entire frame system gh and the holding of the frame weight by the solenoid k ~ and the springs nn ¹ , the force of which is overcome by the dead weight of both frames when the solenoid fr ' ^{2 is de-energized.}

The clockworks of the sending and receiving stations, which are electrically connected to each other in a known manner and which are used for the synchronous operation of the switching drums that alternately feed the solenoids of their stations, described in more detail below, are set in motion simultaneously when the remote image transmission apparatus is put into operation, with both stations the rollers switch on their conductive parts, namely the one in their local circuit through which the upper solenoid k " (on the transmitter station with lamp e connected in parallel) and the left solenoid k receive current at the same time. The first line movement takes place. for the left (k) and the upper solenoid k ' ¹ as well as the lamp e on the transmitter station there is no current, the heavy weight of the frame slowly comes into effect "by overcoming the force of the springs nn ^x , in the same amount of time , in which by the shift drum the upper solenoid k-, the lamp e and at the same time each tzt the right solenoid k ^{1 have received} current.

The springs η n ^l snap into the gap above and support the upper solenoid in holding the frame. The latter now moves in the opposite direction at the same length and speed as before, until it is lowered by one tooth width in the manner described, and this continues until the entire surface is passed in front of its exposure opening, after which the current is switched off. In this currentless state, the outer frame h, by holding the springs nn ^l aside, can be brought back to its initial height position by hand and held in this position by any suitable adjusting device. Instead of the sharp teeth on the broad sides of the outer frame, flat ribbing and, instead of the snap-in springs, sanding springs can be provided.

The alternating supply of one of the two lateral (kk ¹ ) and at the same time the upper solenoid A ^-2 as well as the exposure lamp, e , which is switched on in the circuit of the latter, takes place from the current source ρ by passing the total current over a branch switch, consisting of the horizontal supply rail q , the attached slip springs q ^} q ² q ^s , the rotating cylinder q ⁱ and the pantographs q ⁵ q ^a q ', 70' which are attached to the common isolated axis of rotation q ^s .

The jacket of the cylinder q ⁱ , the circumference and speed of rotation of the length and speed of pulling of the lateral solenoids Ick ¹ is dimensioned accordingly, so that its single revolution corresponds to a back and forth movement of the picture frame h and a lowering by two lines, since once during the revolution the left (It) and once the right solenoid k ^l receive current and twice currentlessness of the upper solenoid k ' ² occurs, offers conductive and insulating parts in such an alternation that only one supply spring q ^l , q' ² or ^ ³ with a pantograph q ^e , q ^ü or q ¹ respectively. is in conductive connection with the left or right solenoid k or k ^1.

The springs ^ ³ and q ⁷ , which transfer the current to the upper solenoid Ar ² (and exposure lamp e), slide on a part of the jacket which is insulated from the sliding surface of the other two current-conducting springs and which in turn is divided into conductive and insulating parts so that that when current is transferred to one of the two lateral solenoids through an insulating zone that extends jointly over both sliding surfaces of the jacket, the upper solenoid also receives only one of the two lateral currents at the same time, but is de-energized with each of them at the same time. The device for automatically moving the frame gh in front of the exposure opening c is the same on the transmitter as on the receiving station, except that in the latter the exposure lamp receives its changing current intensity from the selenium cell of the transmitter station.

The clockworks used to operate the reversing rollers are as mentioned electrically connected to each other so that both are required at the same speed work.

Claims (1)

Patent claim: Apparatus for shifting images in horizontal and vertical directions for devices for remote transmission of images with the aid of selenium, in which that which is to be transmitted into the distance Image (transparent f), which is stretched in an inner frame (g) , with this (g) in a second (outer) frame (h) can be moved horizontally under the influence of electromagnetic forces and with both frames (gh) together also on electrical Paths can be moved vertically, characterized in that the line-by-line, in alternating direction in front of the exposure lamp (e) taking place past the image ff) in horizontal respectively. lateral direction by two solenoids (kk ¹ ) and the vertical respectively. Downward movement of the image by the dead weight of the frame (gh) overcoming the spring force of the lateral retaining springs (nn ¹ ), which, when a third solenoid is excited (kj together with this, prevent the frame from moving downward, is made possible by a permanent rotated, the roller-shaped power switch (q *) are alternately conductive and insulating parts in such a manner offset from each other and dimensioned so that by means of current collectors (q ^h q ^a q ^1), which drag on the sheath, alternately, the third solenoid (it ¹⁾ including the exposure lamp ( e) on the donor station (on the receiver station the lamp (e ^l ) in which the selenium cell (a) flows through the line current on the donor station) is now with one (k) and now with the other (k ¹ ) of the first two solenoids ( kk ^l ) receives current at the same time and all three (kk ^l k "-) thereby cause the image to move sideways, while the downward movement of the image through the from the Str omwitch (q ^) causes all solenoids to be de-energized at the same time. 1 sheet of drawings.