SU32922A1 - Dual film projector - Google Patents

Description

The author's certificate No. 24233 describes a double film projector consisting of two projection heads directed; with their lenses in opposite directions and mounted on one common body. The head mechanisms alternately engage with one common vertical drive shaft, which is accomplished by rotating the whole body through 180 °. Such a projector makes it possible to conduct a session without a.trakt in the presence of only one projection unit, h

The present invention is an embodiment of the above-mentioned projector. Distinctive features of this variant are: 1) the form of communication with the drive shaft and the drive shaft and 2) the availability of a device for lubricating the mechanism.

In FIG. 1 is a front view of the projector; FIG. 2-vertical vertical section of the projector; FIG. 3- side view of the projector; FIG. 4-longitudinal vertical section of the projector; FIG. 5-horizontal section of the projector; FIG. b-top view of the projector housing; FIG. 7-clamping carriage.

The projector (fig. 1) consists of two, independent from each other, a tape pro (105)

tightening mechanisms, which are enclosed in individual I, / I boxes, fastened together by means of screws 26 and forming a crankcase, in which the oil-operated parts are located. The details of one tape mechanism are indicated by numbers without an index, the details of the other by the same numbers, but with an index a.

The housing (Fig. 4) of the projector is assembled with support 2, for which there is a hole 35 in its bottom, and a cover 34 formed by tides 27 in the lid (Fig. 6). Support 2 (FIG. 4) serves as a casing for the drive mechanism and at the same time a bearing of the vertical shaft 3 mounted eccentrically. Such a position of the shaft 3 allows alternately turning on one or the other tape mechanism by turning the entire body 180 ° around support 2 and bringing gears 4, 5, b, sitting on shaft 3, with gears 7, 8 to 9 of the corresponding (left or right) tape drive mechanism.

Each tape mechanism consists of three drums of the same, and at the same time large, diameter. The upper, feed drum 14 (Fig. 2) sits

On the axle, / 5 of the carrier gear 7, coupled with the gear 4 (Fig. 4) on the shaft 3. The middle drum 18, giving the film intermittent motion, sits on an axis 77 carrying a multi-beam Maltese cross or a special finger mechanism (described in patents Nos. 7240, 8429 and 10776), consisting of a disk / 2 with fingers, receiving an intermittent movement from a disk (eccentric) / G with a cut or grooves, sitting on an axis 75. At one end of axis 15 there is a brush 8, hooked With the bristle 5 on the shaft 5, and at the other end, coming out of the body, the flywheel 76 is mounted with a obturator in the f yoke cylinder diametrically opposite slots. The lower, pressing drum 20 sits on the axis T9 carrying the bristle 9 interlocking with gear 6 on the shaft 3. The drums 14, 18 and 20 are equipped with spring-loaded pressure carriages 28 (FIG. 3), of which the upper one serves the drum 14, It has one roller VO, and the bottom, which simultaneously serves the drums 18, 20, is equipped with two rollers 30. The carriage 28 (Fig. 7) is equipped with spring devices consisting of a plate spring 57 attached to the carriage body, abutting flat sharpening 33 on the axis 32, which ensures the elastic fixation of the carriage in certain m position for allowing gluing, film. When the carriage 28 is retracted from the drill, the spring 57 comes out of the sharpening 55 and, slipping along the cylindrical surface of the axis 52, creates the necessary braking torque which delays the carriage 28 in the position given to it.

To lubricate the mechanisms in the housing (housing) of the projector, oil is poured to such a level that it covers gear 6. The automatic lubrication device consists of a JO tube, the lower end of which is located in the support housing 2 under the brush 6, and the upper gear near gear 4 (Fig 4 and 5). When the projector is working, the oil that is entrained by the spiral of gear 6 goes down under pressure into the tube W and, lifting it up, goes to the bristle 4. From there, the lubricant is transferred to all the rubbing parts both by direct transfer and by spraying, dripping, etc. .

For setting the frame into the frame, the device described in patent No. 13982 can be applied, by means of which the drum / 8 makes a certain turn about its axis 77. Objectives are mounted in frames 27.

The subject matter of the invention.

1. Modification of a double-film projector according to the author's certificate No. 24233, characterized in that a vertical shaft 5 is used eccentrically with respect to the support 2 and equipped with transfer gears 4, 5 and 6 for pulling the tapes.

2. In case of a double film projector, according to the author's certificate No. 24233, a device for lubricating mechanisms consisting of a pipe Yu, the lower end of which is located in the support case 2 under the bristles 6, and the top ends near gear 4 of the shaft 3 (Fig. 4 and 5 ).