SU38449A1 - Shading device - Google Patents

Description

 Devices for applying shading in two directions are already known by means of an isosceles right-angled triangle, which is moved by its holder along the guide bar of the fixed bar, and also by using a block envelope for moving the moving parts of the device.

In the proposed device, a circular scale under the corresponding index is applied to the rotary knob mounted on the axis, mounted on the axis of the rotary button, in order to install the sanding plate. The cord-wrapped unit is provided with a Marginal pin to prevent the cord from slipping.

In another embodiment of the device for mounting the sanding gate, the device is designed with a gear and with a ratchet dog, the clicking sound of which serves to guide the shading. In the third embodiment of the device for mounting the sanding gate, a device is provided with a pivoting, equipped with a shoe, a lever, which swings when the shoe is engaged with the gear of the button axis between two stops. One of these stops is fixed and the other is moving.

(189)

using a micrometer screw along the shkalah.

In FIG. 1 shows a top view of the device; FIG. 2 is the same side; FIG. 3rd transverse vertical section; FIG. 4 and 5 - its details; FIG. 6 is a variant of the device, top view; FIG. 7 is the same, below; FIG. 8th transverse vertical section; FIG. 9 is another variant of the device, top view; FIG. 10 is the same below;, FIG. The fifth vertical cross-section, and FIG. 12th item.

The hatcher consists of an isosceles right-angled triangle 1 (fig. 1, 3), provided with a holder, consisting of a wooden plank 2 and a tube or canals attached thereto, intended to move along a guide rod 5 fixed to the ends of the said strap in brackets 7 and 8. On the bar 2 a carriage is fastened, consisting of plates 12 and a curved plate 19 connected with screws to plate 4, carrying axle 11 to strengthen button 17 and block 9. On button 17, which is located under index 21, on celluloid plate, etc. and the bottom cut-out 20 in the plate 19, four circular scales were applied, respectively, held at one or another distance, for example, at a distance of 1, 1.5, 2 and 2.5 mm. The designations of these scale divisions are applied along the edges of the notch 20 in the plate 19. The block 9 is wrapped with the cord 10, the ends of which are worn with their loops on the hooks 48 and 49 of the brackets 13 and 14 (Fig. 2). The middle of the cord is wrapped with a loop with a pin 15 (Fig. 4, 5), passed through block 9 to eliminate the slip of the cord. To adjust the tension of the cord, use a screw 16 in the bracket 14 (Fig. 1.2). To close the cord is w; Itok 22 (Fig-3).

The use of the device is as follows. When shading at an angle of 45 °, move the holder of the triangle, turning the button 17 to the left end of the bar 6. Then, setting the index 21 to the required division of the circular scale, and One of the sides of the triangle in place of the hatching, press the bar 6 with the left hand and drawing and draw the first line hatching on the left side of the triangle. Turning the button 17 further, set the next division of the same circular scale to the index and draw the second line, etc. When shading at an angle of 135 °, you should do the same, but only rotating the button in the opposite direction, and draw the lines on the right side of the triangle .

In the embodiment of the shading device shown in FIG. b - 8, all the main parts of the device are the same as in the above described device, but there is a device for mounting the schtrivka schagov with three teeth 22a, 2c superimposed on each other (fig. 7, 8), fitted with a different number of teeth, respectively, the step of the hatching, and with the dog 23 mounted against each of the gears. The dog is provided with a spring 24 (Fig. B, 8) and is supported by a ring 28, which can be moved along the rack 26, in the form of a spring fork (tuning fork). Upper gear is designed to obtain a shading step of 1 mm, medium - mm and lower.

Using a variant of a shading device is similar to using the above described device; Only here

instead of setting the index to one or another division of one of the circular scales, the dog 23 is set against one of the gears and draws hatching lines, listening to the click of the dog.

In another embodiment of the apparatus shown in FIG. 9-12, for adjusting the hatching pitch, there is a device with a lever 31 pivoting on the axis 11. Its middle part is provided with a pad 35, 36 intended to be pressed against the gear 39 during shading. The end of the lever moves in the box 41 between the fixed stop 47 (in the form of a screw ) and an emphasis 45 (in the form of a nut with an index), moved by means of a micrometric screw 42 along the scale 46 (Fig. 9). Near the axis, the lever is pulled away by a spring 33, hooked onto the hook 34, with which the carriage plate 12 is provided. On axis 11, lever 31 is reinforced by means of washer 30 and stud 32 (fig. 9-11).

Use of the device: installation of the step of hatching with the help of the micrometric screw 42, movement of the stop 45 with the index on the desired division of the scale 46, the scale divisions of which correspond to the distance between the lines of 0.5; one; 1.5; 2; 2; five; 3; 3.5 and 4 mm. Having set the step of the hatching, place the device in place of the hatching with the edge of the ruler 1 and, pressing the bar 6 with the left hand, draw the first line. Further, the right hand is operated together on the handle 17 and the block 35, 36, turning them to the right to failure, and the ruler will move for a set distance. After removing the right hand from the instrument, the end of the lever, returning to its former (left) position, will strike the stationary stop 47 and will give a beep to draw the next line of hatching.

The subject matter of the invention.

Claims (4)

1. A shading unit with a fixed bar, the rod of which moves an isosceles right triangle to draw dashes in two directions, and with a cord around the unit movement of the carriage with the holder, characterized by the use of the buttons 17 with circular scales fixed on the axis 11 under the index 21 for the distances between the grooves and the block 9 with the transverse pin 15, wrapped around the cord 10, the ends of which are fixed on the fixed bar 6 (Fig. 1-5) . 2. When using the device according to claim 1, applying the carrier plates carrying the axis 11 of the carriage 4, 12 and 19 and the flap 22 for closing the cord 10 (FIG. 1-3). 3. The form of implementation of the shading unit according to claims. I and 2, characterized by the use of a device for adjusting the distance between the strokes, consisting of fixed on axis 11 the carriages under the button 17 of the gears 32a, 22 I, 22c with different numbers of teeth and from the spring-loaded dog 23, supported by the ring 2a, adjustable on a double stand 26 (Fig. 6-9). 4. The form of implementation of the shading unit according to claims. 1 and 2, characterized in use for moving the dashed ruler 1, the lever 31 pivoting on the axis 11, under the action of the spring 33, the end of which is intended for movement between the fixed abutment 47 and the abutment 45, moved by the screw 42 along the scale 46, and the middle the part is provided with a block 35, 36 for pressing while hatching the buttons 17 to the gear 39, (Fig. 10-13). YYG / // Ф11Г.2 // yy IS W ::::: gtzu -: l, j jlr / 7 -j- V s W F // GZ / 2/49 / y ./ te fl.a FIG. 7 48 2Sb & .... :: SJg ::. Ffr. (;; i-c ------- -: & ir- 4. GNGM F11G8 ff 28 . // FIG.9