 | James Samuelson, Henry Lawson, William Sweetland Dallas - Science - 1866 - 594 pages
...crownwheel, on whose axle is a pinion-wheel working in the teeth of the circle c. The casings at e and t/, in which the rods he and h' e' respectively work,...telescope can be swept at once through any desired angle in altitude or azimuth. This method of mounting has other advantages ; the handles are conveniently... | |
 | James Samuelson, Henry Lawson, William Sweetland Dallas - Science - 1866 - 584 pages
...pinion- wheel working in the teeth of the circle c. The casings at e and d, in which the rods li e and h' e' respectively work, are so fastened by elastic...telescope can be swept at once through any desired angle in altitude or azimuth. This method of mounting has other advantages; the handles are conveniently... | |
 | George Frederick Chambers - Astronomy - 1867 - 888 pages
...the rod A' e, the lantern wheel at the end of which turns a crown wheel, on whose axle is a pinion working in the teeth of the circle c. The casings...handle h' at once releases the endless screw or the crown wheel respectively, so that the telescope is free to be swept at once through any desired angle... | |
 | Richard Anthony Proctor - Astronomy - 1873 - 136 pages
...pinion-wheel working in the teeth of the circle c. The casings at e and e', in which the rods lie and h'e' respectively work, are so fastened by elastic cords...the handle h, or a downward pressure on the handle h r , at once releases the endless screw or the crown-wheel respectively, so that the telescope can... | |
 | George Frederick Chambers - Astronomy - 1877 - 968 pages
...e and e', in which the rods fie and h' e' respectively work, are so fastened by elastic cords tliat an upward pressure on the handle h or a downward pressure...handle h' at once releases the endless screw or the crown wheel respectively, so that the telescope is free to be swept at once through any desired angle... | |
 | Richard Anthony Proctor - Astronomy - 1879 - 144 pages
...a pinion-wheel working in the teeth of the circle c. The casings at e and e', in which the rods lie and h' e' respectively work, are so fastened by elastic cords that an upward pressure on the handle li, or a downward pressure on the handle h', at once releases the endless screw or the crown-wheel... | |
 | George Frederick Chambers - Astronomical instruments - 1890 - 602 pages
...the rod h' e', the lantern wheel at the end of which turns a crown wheel, on whose axle is a pinion working in the teeth of the circle c. The casings...the handle h or a downward pressure on the handle fi' at once releases the endless screw or the crown wheel respectively, so that the telescope is free... | |
 | Frank Markey Gibson - Astronomy - 1894 - 214 pages
...pinion-wheel working on the teeth of the circle c. The casings at e and e', in which the rods he and K e' respectively work, are so fastened by elastic cords...telescope can be swept at once through any desired angle in altitude or azimuth. This method of mounting has other advantages : the handles are conveniently... | |
| |
K e' respectively work, are so fastened by elastic cords that an upward pressure on the handle h, or a downward pressure on the handle h', at once releases the endless screw or the crown-wheel respectively, so that the telescope can be swept at once through... 