Manual of Visual Signaling of the U.S. Signal CorpsU.S. Government Printing Office, 1905 - 207 sider |
Vanlige uttrykk og setninger
acetylene adjustment alphabet angle Ardois Army attached background burner Cable calcium carbide carbide holder cartridge Chronosemic cipher disk cipher letter clamp color communicating station compass connecting deciphering dial diameter diaphragm direction display distant signals distant station elementary signals enciphered enemy feet field glass filter flag flagman flame gasket ground heliograph horizontal inches indicate International Code interval key letter key number key word keyboard lamp lens light method miles mirror bar motion Mount Ellen night signal object glass observed plug Porro prism position prism rays receiving station receptacle repeated rocket screen seen semaphore sender sending station sent side sighting rod Signal Corps signal officer signal station signalist signalman station mirror station signaling lantern steady flash stopcock sun mirror telescope telescoping sight text letter tion transmitted tripod true north tube turn U. S. Army vertical visible visual signaling
Populære avsnitt
Side 61 - nd," " rd," and "th" will be each counted as one word. Letters and groups of letters, when such groups do not form dictionary words and are not combinations of dictionary words, will be counted at the rate of five letters or fraction of five letters to a word. When such groups are made up of combinations...
Side 41 - To call a station make its call letter until acknowledged. If the call letter of a station be unknown, signal A until acknowledged. Each station will then turn on a steady flash and adjust. When the adjustment is satisfactory to the called station, it will cut off its flash, and the calling station will proceed with its message.
Side 38 - ... is to the right of the sender, and will embrace an arc of 90", starting with the vertical and returning to it, and will be made in a plane at right angles to the line connecting the two stations. The second motion (the dash) is a similar motion to the left of the sender. The third motion (front) is downward directly in front of the sender and instantly returned upward to the first position.
Side 31 - When the general direction only of the object can be given and it is sought for, the whole landscape in that direction to the horizon should be divided into sections by imaginary lines, the limits of these sections being bounded between visible landmarks through which the bounding lines are supposed to pass. Each section should be scrutinized little by little until the glass has been passed over every spot. Such search will seldom fail to be successful.
Side 78 - ... tangent screws of the sun mirror. Movement imparted by these screws to the mirror does not disturb the alignment, as its center (the unsilvered spot) is at the intersection of the axes of revolution. Extra care bestowed upon preliminary adjustment is repaid by increased brilliancy of flash. With the alignment absolutely assured and the "shadow spot" at the center of the disk, the axis of the cone of reflected rays is coincident with the line of sight and the distant station receives the greatest...
Side 40 - If the sender discovers that he has made an error he should make 3 followed by 12 12 3, after which he begins the word in which the error occurred.
Side 80 - Steel parts should be kept oiled and free from rust . Tangent screws and bearings should be frequently inspected for dust or grit. Mirrors should invariably be wiped clean before using. In case of accident to the sun mirror, the station mirror can be made available for substitution therefor by removing the paper disk. If the tripod legs become loose at the head joints, tighten the assembling screws with the screw-driver.
Side 112 - The generator used is known as "the cartridge generator," and while constructed on the waterfeed principle, the disadvantages incident to this method are eliminated as far as possible. It is constructed of brass and has a removable top. Attached to the inside of the top is a flexible frame with a spring latch, the spring latch being hinged. (Fig.
Side 31 - In addition, guide lines may be established by driving two stakes firmly into the ground and close to each other. A prolongation of a line through the center of one post and marked on the adjacent one will strike the distant station. Under each line should be written the name of the station which it marks.
Side 82 - If the receiver sees that the sender's mirror or light needs adjustment, he will turn on a steady flash until answered by a steady flash. When the adjustment is satisfactory the receiver will cut off his flash and the sender will resume his message.