Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . a o 463 The Injectors.—Three patterns of injectors were tried in these experiments, and descriptions ofeach, with results obtained, are appended. All the injectors had the same numerical size, No. 6, thenumber indicating that the smallest diameter of the delivery tube was 6 millimetres or dimension was carefully measured in the case of each injector. The general features of the injectors used in these experiments cover, with the exception of specialdetails of construct
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . a o 463 The Injectors.—Three patterns of injectors were tried in these experiments, and descriptions ofeach, with results obtained, are appended. All the injectors had the same numerical size, No. 6, thenumber indicating that the smallest diameter of the delivery tube was 6 millimetres or dimension was carefully measured in the case of each injector. The general features of the injectors used in these experiments cover, with the exception of specialdetails of construction, nearly all the varieties in the market; illustrating—. 1. The injector with automatic adjustment of combining-tube and water-supply, in connection witha lifting attachment; 2. The non-adjustable injector with fixed nozzles, non-lifting ; 3. The non-adjustable injector with fixed nozzles, in connection with a lifting attachment. These instruments have, however, some special details of construction, as will appear by the de-scriptions that follow. 1. The Self-Adjusting 1876 Injector.—An elevation of this injector is shown in Fig. 2422, and asectional view in Fig. 2423. The injector is self-contained; or in other words, it has both steamand check valves, so that it can be connected directly without other fittings, although of course it is 164 INJECTORS. generally desirable to place another stop-valve in the steam-pipe, and a check-valve in the delivery-pipe, so that the injector can be taken to pieces or disconnected at any time. Another importantfeature of this injector is, that it is operated by a single handle, and that the waste-valve
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