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all-metal frame angle arrangement beds benches boil bolts bottom cast-iron cement cent CHAPTER chimney coils coldframes column concrete construction Corner bars cost cubic cubic foot degrees double acting eave plate erected expansion tank feet wide flow pipe flues frame house frost line gable gallons gearing glass glazing points gravel greenhouse heating growers gutter heating pipes height hot water hot-water heating hotbed hydraulic ram inches lapped length less linseed oil manure material mats method necessary number of square operating paint panes pitch placed plants pounds pressure pump purlin putty putty knife rabbet rack and pinion radiating surface rafters return pipe ridge roof sand satisfactory sectional boiler semi-iron shaft side posts side ventilators sill soft coal soil sometimes sorbs span house square feet square foot steam heating sub-irrigation tank temperature tion uneven span usually valve ventilating sash W.I. pipe water-tube boilers width
Page 118 - It is impossible to give a rule that will apply in all cases, as the amount varies with the kind and thickness of the paint, the kind of wood or other material to which it is applied, the age of the surface, etc. The following is an approximate rule : Divide the number of square feet of surface by 200. The result will be the number of gallons of liquid paint required to give two coats ; or divide by 18, and the result will be the number of pounds of pure ground white lead required to give three coats.
Page 229 - ... load on the pump is more steady and regular than is the case in the common jet condenser. The danger of the water working back into the engine cylinder, in case of flooding, is less with this form of jet condenser than with the common jet condenser. 27. The injection opening of a jet condenser must not be more than 20 feet above the surface of the water supply, and it is highly important that the injection pipe be entirely free from air leaks. 28. In Fig. 5 is shown a jet condenser in connection...
Page 177 - ... warming, and it is sufficient to add that they can be easily studied by anyone who is sufficiently mechanical to make a small model of glass pipes and flasks, with the aid of rubber corks and tubing, applying the heat from the flame of a candle. It will be noticed that the flow pipe is taken from the top of the boiler and the return connected to the side low down. If this side...
Page vii - ... of the various experiment stations and of the United States Department of Agriculture...
Page 233 - Multiply the fall in feet by the quantity of water supplied to the ram in gallons per minute, divide the product by the height the water is to be raised, and the result will be in gallons per minute.
Page 186 - This makes practical the heating of the coils to a high temperature in severe winter weather and at the same time permits the system to be run at lower temperatures in mild weather. In this respect it has the advantage over steam. It is claimed for these mercury "generator" devices that they greatly improve the circulation of the water in a heating system.
Page 141 - This sliding movement is utilized to operate the sash by means of a right angle lever, pivoted at the angle with the short arm attached to the shaft and the long arm to the sash.
Page 6 - England the grape vine is hardy, but the summers are too cool and the seasons too short to ripen the fruit to perfection. This led to the training of the vines on the south side of buildings and walls that they might receive more fully the light and heat of the sun.