SU37865A1 - Invelirna rake - Google Patents

Description

In the proposed leveling rod, in order to read the marks of points directly on the rail, its scale is applied on an endless belt, enveloping the blocking rings, fixed on the ends.

In FIG. 1 shows a general view of the rail in front; FIG. 2 is the same side; FIG. 3-general view of the endless belt; FIG. 4 - view of the part of the rail in nature; FIG. 5 is the same in the field of view of the pipe; FIG. 6-leveling scheme.

The lath is a long, narrow and lightweight wooden tongue, the length of which depends on the dimensions of the lath. Inside the box there is an endless flexible ribbon (stitched in place of zero), on which centimeter divisions and numbers are painted with paint. The tape bends around the interlocks installed at the ends of the rail and, within the crate, can move freely up or down, is held in the tensioned state and is fixed in the desired position.

The rake grafix is depicted in FIG. 4 and 5. The numbers are set in two rows; digits of one row are set every ten centimeters and digits of another row yes — every meter.

For the production of leveling, a level is placed and brought into a horizontal position, and the rail is placed, in the usual order, at the reference code point (bench mark, picket, shoe), the mark of which must be known in advance (otherwise, a conditional mark is set) . Suppose the starting point is 92.125 meters; The level pipe is directed onto the rail, and the rack, at the signal of the leveling device, begins to move the rail strip until the middle hair of the tool pipe coincides with the reading of 2.125 (Fig. 1 and 6), after which the tape is fixed in the indicated position. Then moving the rail to the next one, read it by the middle; the hair has a countdown on the rail; let the countdown be 1,790; this means that the mark of the new point is 91,790; it is recorded in a journal. If on the third point on the rail the countdown is 0,120, then this is OUTBetCTByei from the score 90,120; with a count of 9.535 — the mark of 89.535, etc. Thus, the mark of each point is read directly by the rail n is written against the corresponding point number in the log, which in this case consists of two main graphs;

1) graphs for recording the numbering of points that are leveling, and

2) columns for records of marks and two optional columns; 3) Graphs for recording absolute marks of relatively

sea level and 4) columns for notes.

This eliminates the work of calculating the difference between the observed marks for calculating absolute or conditional points from them.

An ordinary slatted scale can be applied on the back side of the crate.

The subject matter of the invention.

Leveling rod, characterized in that, in order to read the marks of points directly on the rod, its scale is applied to the endless belt, which is set movably by means of blocks of coils fixed on the ends of the rod.

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