SU34925A1 - Central sector shutter - Google Patents

Description

The purpose of this invention is to create a central sector shutter mechanism with as few parts as possible, but ensuring reliable operation and correct shutter speed.

In FIG. Figure 1 shows the shutter mechanism in position for immediate action; FIG. 2-the same mechanism in position to act on the shutter speed; FIG. 3t-ring, which serves as a sector lobe holder; FIG. 4 is an external view of the shutter.

A ring / (Fig. 1 and 2) is put on the protruding central inner part of the gate body (figs 1 and 2), two plates 2 (4 with notches) are soldered to the inner part of the cage. allowing it, however, to rotate within the limits allowed by the cuts 2 4. (. The ring 7, in addition, the finger 31 and the segment 32 are soldered, having protrusions .55 and 34 on one side. The sections 7 and 35 have 36 the cuts 7 in Fig. 1 and 2). The button 28 (Fig. 4), passing through the slit in the valve body, is screwed into the plate 4 (Fig. 1 and 2); the arrow, mounted on the button 28, moving on the scale indicates the shutter speed and the mechanism for shutter speed.

(181)

A pivoting barran 12 (Fig. 1 and 2) is installed on the axis passing through the body of the ator. Outside on this axis the lever is strengthened, (Fig. 4). Inside the drum 12 is wound an ordinary clock spring. On the upper plane of the drum 12, a wedge 13 is fixedly attached (Figs. 1 and 2) and a movable pawl 14, having a spring at its side, by means of which it is pressed tightly against the wedge 13 (Fig. 1). The upper plane of the drum has protrusions 37, 38 to 39, Lever 77 is connected by a tight 10 with ratchet segment 6, rotating on the screw 5 and having oblique teeth on a circle. The spring 7, reinforced at point 40, is provided with a beveled tooth 8, dropping into the oblique teeth of segment 6. The degree of elasticity of the spring / is controlled by a screw 9 passing through the wall of the gate body.

The lever 76 touches one of the two brackets of the plate 19 with one shoulder, and the other end of the bar rests against the free end of spring 7.

Semicircular lever 77, 41 has a rotation on the screw 18. The free end 41 of it passes out through the slot in the wall of the body of the shutter. In the free state, by means of a spring, visible in FIG. 1 and 2 at points 77 n J8, the lever takes the position indicated

pa, consisting of a button2 with a scale, f mounted on the axis of the drum 12, and a finger 31 on the ring /, which serves to

tilting the lever 11 to the left in order to fit the ratchet segment 6.

.IG: 4a., “FIG 2 40

6

. ,, -. 02 - about 3 202.7.

 3

: Expert and Editor A. G. Bremzen

F-IG 4

Lenprompechatat Union. Type of. Pecs Labor, Zack. 3560-200