This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...from the bars of the iron supporting frames. The sections are electrically connected with each other at the top and bottom alternately, as shown in figure 5, Plate X. The elevating rheostat (Pls. VII and X) is essentially like the retracting rheostat, except that it is made up of eight sections and has a higher ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...from the bars of the iron supporting frames. The sections are electrically connected with each other at the top and bottom alternately, as shown in figure 5, Plate X. The elevating rheostat (Pls. VII and X) is essentially like the retracting rheostat, except that it is made up of eight sections and has a higher resistance and lower capacity. (In the case of carriages manufactured at Watertown Arsenal it has been found necessary when elevating or depressing to cut out one or two sections of resistance in the elevating rheostat in order to start the motor with the controller handle at the first notch.) The resistance sections should be so connected to the leads as to give the proper proportion of resistance between the five contact points. Referring to the diagrammatic representation of the elevating rheostat, the blank rectangles may be considered as resistances interposed between the contact points. The Commtjtating Switch (Pls. VII and X) consists of a cylinder of insulating material carrying eight copper contact pieces, a, a', b, b', c, c', d, and d', arranged one above the other. They are connected in pairs, a to a', b to b', etc. Mounted on a stationary block of insulating material are eight contact fingers arranged so as to come in contact simultaneously with the contact pieces on the cylinder when the latter is rotated. The extension of the cylinder shaft above the top of the casing is provided with a lever, by means of which the cylinder is rotated. This lever is joined to the lower end of the clutch lever by a connecting rod. When the clutch lever is thrown to the rear for retracting, the cylinder of the commutating switch is rotated so that the contact pieces are brought into contact with the eight stationary fingers. This instrument and the elevat...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
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Good. Size: 0.1 x 7.3 x 9.5 inches; Original--not a reprint. Retired library book with usual library markings. INSTRUCTIONS MOUNTING, USING, AND CARING FOR DISAPPEARING CARRIAGE, L. F., MODEL OF 1905 Mi, FOR 6-INCH R. F. GUNS, MODELS OF 1903, 1905, AND 1908. (NINE PLATES. ) [The parts in italics are of particular importance or concern the safety of the carriage and should be specially noted. ] [The important changes in this pamphlet are shown in boldface type. ] GENERAL DESCRIPTION. THE EMPLACEMENT (Plate I). ? Emplacements for these carriages are entirely of concrete and can be arranged for a maximum field of fire of 170 degrees. This limitation is not due to the inability of the carriage to traverse through 360 degrees, but to the requirements of parapet protection for the materiel and connoneers. The anchor bolts are set in the concrete during the construction of the emplacement, the depressions for the thrust plates being also provided in the top surface. Access to the counterVeight well is given by a vertical shaft in the rear and outside of the base ring. THE CARRIAGE (Plates II, III, IV). ? 28 pages.
