SU5475A1 - The device for checking the length of the measuring tape - Google Patents
The device for checking the length of the measuring tapeInfo
- Publication number
- SU5475A1 SU5475A1 SU10276A SU10276A SU5475A1 SU 5475 A1 SU5475 A1 SU 5475A1 SU 10276 A SU10276 A SU 10276A SU 10276 A SU10276 A SU 10276A SU 5475 A1 SU5475 A1 SU 5475A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- length
- checking
- measuring tape
- line
- plates
- Prior art date
Links
- 210000002105 Tongue Anatomy 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Description
На фиг. 1 и 2 чертежа изображены вид спереди и сверху предлагаемого прибора и на фиг. 3- вид сверху на прилегающие друг к другу пластинки и стойки.FIG. 1 and 2 of the drawing depict the front and the top view of the proposed device and FIG. 3 is a top view of adjacent plates and racks.
Нижн часть прибора имеет вид коробки 9, с параллельными вырезами в ней дл движени по ним каретки 7, с соответствующими в ней параллел ми. К верхней доске каретки привинчены две стойки 6 с вертикальными шпунтами в каждой из них, дл помещени в них двух притертых между собою и к шпунтам пластинок 1 и 2; последние св заны взаимно шнуром 3, перекинутым через ось 4 рычага 5. При повороте на 180° оси 4, снабженной рычагом с противовесом при нем, поднимаетс вверх одна из притертых пластинок и одновременно автоматически опускаетс вниз друга и удерживаетс в таком положении противовесом. Пластинки 1 и 2 перемещаютс по вертикальным шпунтам стоек б, привинченных к каретке 7. Последн сделана подвижной на винте 8The lower part of the device has the form of a box 9, with parallel cuts in it for movement of the carriage 7 along them, with corresponding parallels therein. Two racks 6 are screwed to the upper board of the carriage, with vertical tongues in each of them, in order to place in them two lapped plates between themselves and the tongues of plates 1 and 2; the latter are interconnected by a cord 3, thrown over the axis 4 of the lever 5. When the axis 4 is rotated 180 °, equipped with a lever with a counterweight in it, one of the ground plates rises upwards and at the same time automatically lowers down the other and is held in the counterweight. The plates 1 and 2 are moved along the vertical tongues of the pillars b, screwed to the carriage 7. The latter is made movable on the screw 8
в коробке 9, снабженной четырьм остроконечными ножками 10.in the box 9, equipped with four pointed legs 10.
Дл установки прибора в начальной точке измер емой длины служит отвес с заостренной шпилькой 13. Нить отвеса пропущена через прорез 12 трубки 11, надеваемой на конец оси рычага 5.To install the device at the starting point of the measured length, a plumb with a pointed pin 13 serves. The plumb line is passed through the slot 12 of the tube 11, which is put on the end of the axis of the lever 5.
Сначала устанавливают визирную дл промеров линию нат гиванием (между двум вбитыми в землю коль ми) бечевы, длина которой немного больше повер емой ленты. На этой линии в начальной точке став т прибор так, чтобы бечева приходилась посредине каждой пары ножек, ввинченных в передней и задней стороне прибора так, что средина промежутка между ними лежит на продольной оси прибора; поэтому и последний будет сто ть на визирной линии. Затем надевают на ось рычага 5 трубку 11 со сквозным прорезом 12 на другом конце ее дл пропуска в него нити отвеса, имеющего заостренную шпильку 13 дл определени точки начального пункта промера. В установленномFirst, a sighting line for measurements with a line is drawn by pulling (between two rings driven into the ground) of the line, the length of which is slightly longer than the tape being turned. On this line, at the initial point, place the device so that the line falls in the middle of each pair of legs screwed in the front and rear side of the device so that the middle of the gap between them lies on the longitudinal axis of the device; therefore, the latter will be standing on the sighting line. Then, a tube 11 with a through slit 12 at its other end is put on the axis of the lever 5 to pass a plumbline with a pointed pin 13 to determine the starting point of the gauge. In the prescribed
Publications (1)
Publication Number | Publication Date |
---|---|
SU5475A1 true SU5475A1 (en) | 1928-05-31 |
Family
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