SU985759A1 - Device for for multi-exposure of frames in photographic camera - Google Patents

Description

(54) DEVICE FOR MULTIPLE EXPOSURE OF FRAME IN THE PHOTO-EQUIPMENT

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The invention relates to photographic equipment, in particular, to devices for multipurpose frame extraction in a photo camera.,

It is known a device for multi-exposure of a frame in a camera that contains an element that is activated outside the camera, when mixed with a ratchet hook from the rammer, as a result of which the change mechanism of the film per frame step and only the cocking mechanism works shutter 1.

The device also contains a locking mechanism that stops the operation of the element

actuated outside the camera.

. . However, this device does not have: sufficient technical quality and reliability of the design, with a rotary exposure, some film mixing is possible, since the doggie is not kept in the cocrosonra removed from the ratchet

.to the end of the cocking of the bolt and after the re-ratchet tooth, the ratchet surface begins to slide.

The closest to the present invention is a device for repeated exposure of a frame in a camera, containing coaxially arranged shaft of a gate, a cocking lever and xpeaioBKK, f interacting with a film pererasult mechanism per frame step, a spring-loaded dog equipped with a protrusion connected to the ratchet through locking, in which the locking mechanism has a spring-loaded release button located in the body in the camera, opposite the C2 pawl.

When pressed, the button moves in the direction perpendicular to the rapper axis, presses on the protrusion of the doggie and you-. leads the dog to engage with the ratchet, thanks to the further action of the existing stopper

The dog disconnects the connection between the film movement and the shutter guvaden. The known device is not sufficiently reliable when operating the camera, since to release the frame again, it is necessary to hold the release button in the depressed position at the first time of the rotation of the charging lever before starting the action of the dog stopper, except In addition, it may fail when the release button is lowered.

The purpose of the invention is to increase the reliability of the design.

This goal is achieved by the fact that the device for multiple screening of the frame in the camera, the locking mechanism is executed in the form of a plug, button, flange and axially spring-loaded direction mounted coaxially with the cocking lever, and the fork is installed between the ratchet and the flange and fixed on the gate shaft. , one end of the rod is fixed on the button mounted with the possibility of axial movement, and the other - on the flange, and the dog is made with a bend, connected with jqjanoBHKOM with a fork, and with a bevel on the protrusion, vuyuschim-introduced abutment, wherein the pawl is fixed on a flange rotatably attached to the limited cocking lever inputted driving pin cooperating with a fork and a flange.

FIG. 1 depicts the proposed device in a single exposure of 1 hdr | in fig. 2 is the same in the re-exposure state of the same frame.

The device contains a cocking lever 1, fastened with a lead 2., which can interact with a fixed stop 3. On a lead 2 is fixed a lead pin 4, which with a gap enters groove B of flange 6 and fork 7 of fork 8. Fork 8 and flange 6 are mounted coaxially and besides the general reason KOBOIX) fingers 4 are no longer linked. The flange 6 is fastened with a rod 9 with a button Yu, the rod 9 with a gap enters the hole of the driver 2 and is spring loaded with a compression spring 11. The device has a pawl 12 fixed on the flange 6 by the axis 13 and can be rotated around the axis 13 and supported by a spring 14. The bend 15 of the pawl 12 interacts with the flan

cement 6 and fastened with a gear wheel 17. The cocking shaft of the bolt 18 with a gap wudit into the hole (not shown) of the gear wheel 17 and fastened with a fork

5 8. There is a gap between sleeve 8 and zfapovik 16. The flange 6 with its lower plane 1O abuts the upper plane of the plug 8.

In the single-exposure frame condition, the device operates as follows.

Turning counter-clockwise the cocking lever 1 cocks the shutter and simultaneously moves the film on the

15 frames. At the same time, the leash 2 and the flange 6 and the fork 8 driven by the driver pin 4 are turned all the way to the stop 3. Together with the fork 8, the valve cocking shaft 18 rotates. used for cocking the shutter (not

20 is depicted).

The pawl 12, the bend 15, rotates the flange 6 and catches the ratchet 16 and rotates it together with the gear wheel 17, which activates the mechanism for moving the film by one frame step (not shown).

Released cocking lever 1 by return spring force (not shown) returns to its original position. With

30 this returns the fork 8, the flange 6, with the pawl 12, the axle 13.- and the pruios 14, the leash 2 with the driver pin 4. At the end of the return rotation, the bend 15 of the pawl 12 drops over the tooth 21

35 of the ratchet 16. At this point, the cycle of operation of the device in a single exposure mode of the frame ends.

The device switches to a multiple exposure mode as follows.

Claims (2)

Having overcome the weak force of the spring 11 of compression, it is necessary to raise the button 10 and o- until the sensing of the stop. In this case, together with the button 10, the rod 9 and the flange 6 move upward together with the pawl 12, the axis 13 and the spring 14 located on it, and the spring 11 is compressed. The dog 12 is rotated clockwise by the force of the spring 14 up to the stop with its protrusion 22 into the driver pin 4. The released button 10 is not released by the force of the spring 11 to its original position, since the bend 15 of the dog 12 rests against the top. The new cavity 20 of the plug 8 stops the downward movement of all previously attached parts, and the pawl 12 stops at the position uncoupled from the ratchet. In a state where the pawl 12 is disengaged from the ratchet 16, the device operates as follows. Turning the cocking lever 1 against the hour hand only takes a stroke, and the mechanism for moving the film to the frame step is disabled, as indicated above, and is idle. At the same time, the ledges 2 and the flange 6 and the fork 8 are fastened with the lead finger 4 up to the stop 3. Together with the fork 8, the cocking shaft 18 used to raise the bolt (not shown) rotates. Together with the flange 6 and the fork 8, the dog 12 of which is moved is moved. After being mounted into the upper plane 20 of the plug 8, it no longer clings or rotates the cap 16, leaving alone the mechanism for moving the film to the frame (not shown). At the end of the rotation of the cocking lever 1, the device automatically switches back to the single-shot mode. The bevel 23 of the protrusion 22 of the pawl 12 meets with a fixed stop 3, slides over it, as a result of which the pawl 12 rotates counterclockwise, against the force of the spring 14. At the same time, the bend 15 comes off the fork 8 and the spring 11 moves down the flange 6 together with the pawl 12, the axis 13 and the spring 14, as well as with the flange 6, moves the rod 9 downward with the button 10 until the flange 6 stops against the fork 8. But in this position until the very last moment. turning the lever 1 of the platoon the dog 12 does not touch the ratchet 16, but is pushed away from it by the side surface 24 of the plug 8. In addition, after some movement downwards, the dog 12. stops interacting with the fixed stop 3, because the length of the stop 3 is so calculated. In normal operation, when the dog 12 is not raised, the bevel 23 of the protrusion 22 of the dog 12 with the stop 3 does not interact. Thus, the shutter is cocked without any movement of the film, and at the end of the shutter cocking, the automatic reverse switching of the device to the p & press of a single exposure of the frame is carried out by one turn counter-clockwise of the cocking lever 1. The retracted spring lever 1 (not shown) returns to the iznaty position, the fork 8 returns to the position described above, the flange 6 with the pawl 12 aligned on it, osbyu 13 and the spring 14, the leash 2i with the driver finger 4. At the end of the return turning the bend 15 of the pawl 12 drops over the tooth 21 of fapovik 16. At this, the cycle of operation of the proposed device in the re-exposure mode of the frame is cast. If necessary, the same frame can be exposed repeatedly, each time raise:; button 1О. Attach the lever of the plant and the shutter release. It is possible to switch the proposed device to the mode of repeated or repeated exposure of the same frame both before and after the shutter release. An elevated position of the button 10 above the cocking lever 1 signals the device to be switched to the rotary exposure mode. Switching to the re-exposure mode is carried out more reliably, since it is sufficient, overcoming the weak spring force, only to raise and release the button. The proposed device provides the ability to easily control the switch to the re-ecoponing mode, since the elevated position of the button above the surface of the cocking lever is fixed automatically, indicating the status of the switch to the re-exposure mode, thereby increasing its reliability. In addition, the proposed device does not limit the actions of the photographer, since it switches to the eco-repeat mode. understanding both before and after the shutter release. Apparatus of the Invention A device for a multiple, exposed 1 frame in a camera, comprising coaxially arranged shaft of a platoon gate, a platoon lever and a ratchet associated with a film moving mechanism, a spring-loaded pawl fitted with a protrusion connected to a ratchet through a locking mechanism characterized in that The aim is to increase the reliability of the structure; the locking mechanism is made in a vvde installed coaxially with the cocking lever of the plug, button, flange and the rod spring-loaded in the axial direction, while the plug is installed between zfapovik and flange n mounted on the cocking shaft, one end of the rod aphene on the button that is installed with the possibility of axial movement, and the other on the flange, and from the tank is made with a bend connected with: a roll with insert, with a bevel on protrusion, raised with a stop, with the dog attached to the gear with the possibility of rotation, limiting it) fixed on the lever 10 platoon, introduced by the driver finger, interacting with vnlkoy and with the flange. Sources of information taken into account in the examination 1. UK Patent No. 1440960, cl. Q 2 A 1976. 2. For Japan No. 54-33531, l. SW 146, 1979 (prototype). and P Yu