SU20453A1 - Apparatus for copying drawings in the sunlight - Google Patents

Description

. - A device is offered for copying in the sunlight of drawings with, by applying, a frame movable on wheels carrying inclined glass e with pinch rollers. For filing photosensitive paper and drawing. on tracing paper or a glass stencil and for 1P1 transfer after their imprinting, the following conveyors are used in the receiving shchik:; with tarpaulin endless ribbons,.; set in motion, agreed by the necessary time, through a special speed cut,:

In the drawing of Fig, 1 depicts a view

:; the proposed apparatus in the side section; . FIG. 2 - view of its part for fastening

. glass; FIG. 3 shows a part of it in FIG. one

 on an enlarged scale; FIG. 4.-view

 his back with an open box for electro. engine and to, shy speeds; FIG. five-

view handwheel with pointer dl. setting the exposure time; FIG. 6 something

the same for tensioning conveyor belts

The frame of the proposed apparatus is

from angular iron 2, to which bol7

tami 5 and b are attached wooden

bar .. 3 (Fig. 2). Along the edges of the glass, the reinforced implant 4, stripes of asbestos 9 are laid, and then stripes of rubber 8. On the three rotating shafts 11, 12 and 13 (fkg. 1) there is an endless conveyor belt 10 of brezrei, sewn in two layers across the width of the glass, with than each layer is stitched together at the butt edge. A narrow strip of width equal to the interval between two rows of pressure rollers 27 is sewed from a tarpaulin in the middle of the tape. The pads 20 coming to the glass are attached to the frame of the device with two bolts 23 and 24, which press the pads to the glass and to the rotating shafts 11 and 12. To the top A block 15, fitted into a corner iron 14 (FIG. 3) and a strip 17 attached to the bracket 16, attaches a thin metal sheet 18 with a polished surface, on top of which tarpaulin strips are fastened, the free end of the metal sheet coming out of the glass and end the sheet strip 21 and screw 22 are attached to 2G block (FIG. 3) to the lower output conductive strip 20 also is attached metaillichesky ,, sheet free end of which is passed a shaft 12 so that the end lying on the other endless

conveyor belt 40 (Fig. 1), worn on the shafts 41, 42 to 44 and also made of tarpaulin. The tension of the conveyor belts 10 and adjusted by the shaft 13 moved horizontally by screws 33 driven by handwheels 32. To determine the tension of the belts of both conveyors, a nut with a pointer 37 for scale 38 is placed on the screw 33 (Fig. 6). In the box 51, a velocity box is placed, by which the speed of movement of the end of the conveyor belts, and hence the duration of the exposure, is regulated. The time of the latter is set using the handwheel 63-with the arrow 68 on a scale of 69 (Fig. 5). In case 48 (Fig. 1), photosensitive rolls of paper / and tracing paper of drawings 85 and 86 are placed, and ready ready blueprints and waste paper are placed in box 49. The visor 45 is designed to prevent paper and tracing paper from sticking with the shaft 11 (Fig. 1 and 3). The frame of the apparatus is placed on wheels 77, which serve for horizontal shifting. With screws 78, the apparatus is fixed to the floor at the work site.

The frame of the booth 80 is covered with tarpaulin S2, with three windows 83, sealed with red glass (Fig. 4). Having installed the device on the place of its proper work, turn on the electric motor. Handwheel 63 sets the desired stroke of the conveyor belts in relation to the length of the exposure. Then a photosensitive paper is laid under the shaft 11, on which a drawing is laid, which is made on tracing paper, on a stencil or on parchment.

,

. 1 drawings come to the box 4U,

where they are taken out for further processing.

The subject of the patent.

1. An apparatus for copying drawings in sunlight, characterized by the fact that the vehicle consists of a mobile, on wheels 77 frame with obliquely fixed flat plate glass 1 and located under. there are presser rollers 27, covered with rubber, and two endless belts of conveyors 10 and 40, of which the first goes around 11, 12 and 13 and serves to feed light-sensitive paper under glass 85, rolled from the roll 85, and drawings on tracing paper or wax, and The second, located under Baals 12 and 13, serves to provide blueprints and drawings on tracing paper after copying to box 49 (Fig. 1-5).

2. When using the apparatus specified in clause 1, applying guide and feed paper and tracing paper to glass 1 of a device consisting of pads 20 pressed with screws to glass 1 and shafts 11 and 12, 1 and pads 15 with thin metal sheet 18, on top of which the cavity of the tarpaulin is reinforced (Fig. 1, 3).

3. In the apparatus specified in paragraph 1, the use of an electric motor to drive conveyors, and to control the speed of movement of those, in order to change the exposure time, depending on the quality of photosensitive paper and sunlight, is a special box of speeds.

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