Carpentry and Contracting: A Practical Reference Work on Carpentry, Building Superintendence, Etc, Том 3American technical society, 1919 |
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Результати 1-5 із 35
Сторінка 96
... motor . This pump , automatically controlled by the pressure in the pipes , removes the air from the pipes and radiators through automatic valves connected by a small pipe with the pump , allowing the steam to fill the system the ...
... motor . This pump , automatically controlled by the pressure in the pipes , removes the air from the pipes and radiators through automatic valves connected by a small pipe with the pump , allowing the steam to fill the system the ...
Сторінка 100
... motor in the basement which oper- ates the drafts of the heater . When the air in the room reaches the desired temperature , connection is made by the expansion of some properly devised part which closes the direct draft and opens the ...
... motor in the basement which oper- ates the drafts of the heater . When the air in the room reaches the desired temperature , connection is made by the expansion of some properly devised part which closes the direct draft and opens the ...
Сторінка 244
... resistances , the larger current going by the path of lower resistance . In Fig . 4 are shown the connections of a " shunt motor " and resistance box " shunted " by a wire . Cut - Out . A cut - out is a. 244 10 UNDERWRITERS ' REQUIREMENTS.
... resistances , the larger current going by the path of lower resistance . In Fig . 4 are shown the connections of a " shunt motor " and resistance box " shunted " by a wire . Cut - Out . A cut - out is a. 244 10 UNDERWRITERS ' REQUIREMENTS.
Сторінка 246
... MOTOR Fig . 9. Diagram of a Constant - Potential System volt , 10 ampere current between two wires which were touched together at a point where the insulation had been destroyed . Constant - Potential System . A constant - potential ...
... MOTOR Fig . 9. Diagram of a Constant - Potential System volt , 10 ampere current between two wires which were touched together at a point where the insulation had been destroyed . Constant - Potential System . A constant - potential ...
Сторінка 247
... motor- and street - railway circuits are of this type and also many arc - lamp circuits . Fig . 9 shows such a 110 - volt system and if the distributing wires are properly chosen the voltmeters at the points A , B and C will all read ...
... motor- and street - railway circuits are of this type and also many arc - lamp circuits . Fig . 9 shows such a 110 - volt system and if the distributing wires are properly chosen the voltmeters at the points A , B and C will all read ...
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Carpentry and Contracting: A Practical Reference Work on Carpentry ..., Том 3 American Technical Society Попередній перегляд недоступний - 2016 |
Carpentry and Contracting; a Practical Reference Work on Carpentry ..., Том 3 American Technical Society Попередній перегляд недоступний - 2013 |
Загальні терміни та фрази
alternating current amperes arc lamps arch architect ashlar boards brick building cable carefully ceiling cellar cement chimney circuit breakers coat coil columns concrete conductors conduit connected construction copper cord covered danger devices direct current door electric feet finish fire fireproof fixtures floor beams flush frame fuses girders glass ground hazard heat heater incandescent lamps inches inside installed insulation iron joints joists Knife Switches laid lamps light lime lines material metal lathing method molding mortar motor nails necessary ordinary outlet painted partitions pipes plaster plate porcelain Portland cement protection resistance rheostats roof rubber sand sashes screws secured shellac shingles shown in Fig shows side slate sockets soldered space steel stone studs superintendent supply surface switch terra cotta thickness tiles timbers tion transformer tubing usually voltage voltmeter volts wall window wires wood wooden
Популярні уривки
Сторінка 382 - The wiring in any building must test free from grounds; ie, the complete installation must have an insulation between conductors and between all conductors and the ground (not including attachments, sockets, receptacles, etc.) not less than that given...
Сторінка 373 - ... be thoroughly ventilated to the outdoor air, if possible, through a chimney or flue. There should be at least six inches air space on all sides of the transformer.
Сторінка 152 - ... along the surface where the junction is to be made and the surface thoroughly wet. The bond and other arrangements will depend upon the circumstances of the case. The surfaces connected should be fitted as accurately as practicable, so that by using but little mortar no disunion may take place from settling. As a rule, it is better that new work should butt against the old, either with a straight joint visible on the face, or let into a chase, sometimes called a
Сторінка 307 - Must be placed at every point where a change Is made in the size of wire (unless the cut-out In the larger wire will protect the smaller.) (c) Must be in plain sight, or enclosed in an approved cabinet, and readily accessible.
Сторінка 152 - ... so that the straight joint may not show ; but if it is necessary to bond them together the new work should be built in a quick-setting cement mortar and each part of it allowed to set before being loaded. In pointing old masonry all the decayed mortar must be completely raked out with a hooked iron point and the surfaces well wetted before the fresh mortar is applied.
Сторінка 350 - Cables may be supported in approved junction boxes on two or more insulating supports so placed that the conductors will be deflected at an angle of not less than 90 degrees, and carried a distance of not less than twice the diameter of the cable from its vertical position. Cables so suspended may be additionally secured to these insulators by tie wires.
Сторінка 96 - ... due to the difference in temperature. When water is heated it expands, and thus a given volume becomes lighter and tends to rise, and the cooler water flows in to take its place; if the application of heat is kept up, the circulation thus produced is continuous. The velocity of flow "depends upon the difference in temperature between the supply and return, and the height of the radiator above the boiler.
Сторінка 371 - Any circuit attached to any machine, or combination of machines, which develops a difference of potential, between any two wires, of over ten volts and less than 300 volts, shall be considered as a low-potential circuit...
Сторінка 144 - ... (sand and rubbish are often substituted for bricks), allowing them to find their own bearing; when the trough is filled, it is plastered over with stiff mortar, and the header course laid and the operation repeated. This practice may have some advantage in celerity in executing work, but none in strength or security.
Сторінка 4 - A Dictionary of Architecture and Building," and "How to Judge Architecture." ADF HAMLIN, AM Professor of Architecture at Columbia University. Author of "A Text-book of the History of Architecture. RALPH ADAMS CRAM Architect Author of "Church Building." CH MOORE Author of " Development and Character of Gothic Architecture." ROLLA C. CARPENTER, CE, MME Professor of Experimental Engineering. Cornell University. Author of " Heating and Ventilating Buildings.