466 SEC. 12. APPLIED MECHANICS. 



1972. Drawing, on a |-inchto 1-foot scale, of Howard Vpatent 

 tubular safety land boiler ; for high-pressure. J. and F. Howard, 

 Engineers, Bedford. South Kensington Museum. 



The drawing illustrates a front view of the boiler; longitudinal section, 

 plan, and cross section. 



On a scale of full size is shown the detail of the water tube connexions. 

 These boilers are made by the Barrow-in-Fumess Shipbuilding Company. 



1973. Drawing, on a 1^-inch to 1-foot scale, of Messrs. A. 

 Chaplin & Co.'s patent vertical tubular high-pressure steam 

 boiler. Alexander Chaplin & Co., Engineers, Glasgow. 



South Kensington Museum. 



The drawing shows vertical sections. Two plans of the disposition of the 

 upper and lower tubes. 



1974. Drawing, sectional, on a 3-inch to 1-foot scale, of an 

 improved vertical high-pressure steam boiler, having horizontal 

 Avater tubes with " Nozzle " ends, to assist the water circulation. 

 From the construction of the tubes with Nozzle ends this boiler is 

 (tailed the " Nozzle " boiler. Reading Iron Works Company, 

 Limited, Reading. South Kensington Museum. 



The drawing shows a sectional elevation of the boiler, and a sectional plan 

 of the arrangement of the tubes ; the circulation of the water, together with 

 the direction of the fire and products of combustion. 



1975. Steam Pump. Horizontal direct-acting steam engine 

 and pump for feeding steam boilers with water, or for pumping 

 and draining purposes. Cope and Maxwell's Patent. Hayward 

 Tyler and Co., 84, Whitecross Street, B.C. 



The steam cylinder is 5 inches in diameter. The stroke is 



7 inches. 



The pump plunger is 3 inches in diameter. 

 The valves are balls of india-rubber. 

 The pump will raise 2,000 gallons per hour to a height of 



120 feet vertically. South Kensington Museum. 



1976. Three Models, in brass, showing in section the arrange- 

 ment of Giffard's patent injector for feeding steam boilers with 

 water. Sharp, Stewart, and Co., Engineers, Manchester, and 

 Victoria Street, S.W. 



a. Giffard's patent injector, in section. 



b. Giffard's injector, in section, with the patent adjustment of 

 Messrs. Robinson and Gresham. 



c. Giffard's injector, in section, with Seller's patent adjustment. 



South Kensington Museum. 



1977. Accessories. Pressure Gauges, for Engines, 

 Boilers, &c. Schaffer and Budenberg, 23, Lower King Street, 

 Manchester. 



a. 5-inch Pearson's patent lubricator for steam cylinders, and 

 other working parts of machinery. 



