Switchboards for Power, Light and Railway Service: Direct and Alternating Currents, High and Low TensionNorman W. Henley, 1910 - 192 стор. |
З цієї книги
Результати 6-10 із 19
Сторінка 145
... blades . If the blade is raised in the direction of arrow C the circuit will be opened . When the switch is closed it is necessary that the blade rest firmly upon the stud b , and to render this certain a spring washer is provided at e ...
... blades . If the blade is raised in the direction of arrow C the circuit will be opened . When the switch is closed it is necessary that the blade rest firmly upon the stud b , and to render this certain a spring washer is provided at e ...
Сторінка 147
... blade . With this construction it would be easy for the blade to be raised from b by a downward pressure of the hand of the opera- tor , and to avoid any trouble from such an occurrence the spring f is provided . This spring serves to ...
... blade . With this construction it would be easy for the blade to be raised from b by a downward pressure of the hand of the opera- tor , and to avoid any trouble from such an occurrence the spring f is provided . This spring serves to ...
Сторінка 148
... blade is moved in the direction of arrows C , there will be a break in the circuit between S P a αα Р a P Figure 95-7 . Figure 96 . N N ! Figure 97 . S a P с N S ' Figure 98 . C CI Figure 95-98 . More switch diagrams . and b and another ...
... blade is moved in the direction of arrows C , there will be a break in the circuit between S P a αα Р a P Figure 95-7 . Figure 96 . N N ! Figure 97 . S a P с N S ' Figure 98 . C CI Figure 95-98 . More switch diagrams . and b and another ...
Сторінка 150
... blade moves in a plane perpendicular to the switchboards surface , like a meat shaver . Switches in which the blade moves in a plane parallel with the surface of the board are occasion- ally employed , when it is desired to connect one ...
... blade moves in a plane perpendicular to the switchboards surface , like a meat shaver . Switches in which the blade moves in a plane parallel with the surface of the board are occasion- ally employed , when it is desired to connect one ...
Сторінка 152
... blade can only be thrown in one direction to close the circuit . The design shown in Fig . 102 is called a double throw switch from the fact that the blade will close the circuit if thrown in either direction . If the switch has but one ...
... blade can only be thrown in one direction to close the circuit . The design shown in Fig . 102 is called a double throw switch from the fact that the blade will close the circuit if thrown in either direction . If the switch has but one ...
Інші видання - Показати все
Загальні терміни та фрази
50 cents alternating current ammeter amperes arc light armature arranged break switches bus bars cables circuit breaker close the circuit Concrete conductors connected with bus construction contacts cross section current passes Derry Collard Derry Collard Co desired devices diagram distributing circuits double throw dynamo Electric erator feed field coils field regulator Figure fully illustrated fuse gas engines ground detector HISCOX inch instruments insulation lamps lightning arrester located Locomotive machine magnet main switch manufacture marble slabs mechanical meter motors nected O'CONOR SLOANE operation panel parallel Phase Switchboard plugs practical rent resistance rheostats safety fuse seen series coils set of busses short circuit shown in Fig shows shunt side sockets spark steam street mains synchronizing terminals three phase three-wire system tion transformers valve vapor vertical voltage voltmeter volts wattmeter Westinghouse wires
Популярні уривки
Сторінка 4 - This work covers the entire practice of Civil and Mechanical Engineering. The best known experts in all branches of engineering have contributed to these volumes. The Cyclopedia is admirably well adapted to the needs of the beginner and the self-taught practical man, as well as the mechanical engineer...
Сторінка 7 - Commutator Construction. By WM. BAXTER, JR. The business end of any dynamo or motor of the direct current type is the commutator. This book goes into the designing, building, and maintenance of commutators, shows how to locate troubles and how to remedy them; everyone who fusses with dynamos needs this.
Сторінка 6 - ... as used in architectural, engineering, and mechanical drawings. Persons taking up the study of the subject by themselves will be able by the use of the instruction given to readily grasp the subject, and by reasonable practice become good perspective draftsmen. The arrangement of the book...
Сторінка 6 - A NEW SKETCHING PAPER. A new specially ruled paper to enable you to make sketches or drawings in isometric perspective without any figuring or fussing. It is being used for shop details as well as for assembly drawings, as it makes one sketch do the work of three, and no workman can help seeing just what is wanted. Pads of 40 sheets, 6x9 inches, 25 cents.
Сторінка 5 - ... making ornamental concrete without molds has long been held as a secret, and now, for the first time, this process is given to the public. The book reveals the secret and is the only book published which explains a simple, practical method whereby the concrete worker is enabled, by employing wood and metal templates of different designs, to mold or model in concrete any Cornice, Archivolt, Column, Pedestal, Base Cap, Urn or Pier in a monolithic form — right upon the job. These may be molded...
Сторінка 13 - LOCOMOTIVE BREAKDOWNS AND THEIR REMEDIES. By GEO. L. FOWLER. Revised by WM. W. WOOD, Air-Brake Instructor. Just issued. Revised pocket edition. It is out of the question to try and tell you about every subject that is covered in this pocket edition of Locomotive Breakdowns. Just imagine all the common troubles that an engineer may expect to happen some time, and then add all of the unexpected ones, troubles that could occur, but that you...
Сторінка 15 - This is a collection of 1,890 engravings of different mechanical motions and appliances, accompanied by appropriate text, making it a book of great value to the inventor, the draftsman, and to all readers with mechanical tastes. The book is divided into eighteen sections or chapters, in which the subject-matter is classified under the following heads: Mechanical Powers; Transmission of Power; Measurement of Power; Steam Power; Air Power Appliances; Electric Power and Construction; Navigation and...
Сторінка 20 - THREADS AND THREAD CUTTING. By COLVIN and STABEL. This clears up many of the mysteries of thread-cutting, such as double and triple threads. internal threads. catching threads. use of hobs. etc. Contains a lot of useful hints and several tables.
Сторінка 6 - It might well be termed an Encyclopedia of Die-Making, Punch-Making, Die-Sinking, Sheet-Metal Working, and Making of Special Tools, Subpresses, Devices and Mechanical Combinations for Punching, Cutting, Bending, Forming, Piercing, Drawing, Compressing and Assembling Sheet-Metal Parts, and also Articles of other Materials in Machine Tools.