Universal Exposition Paris, Volume 31891 |
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Common terms and phrases
apparatus arch arrangement automatic axle boiler bolts bottom BOUGIVAL brake bridge caisson carriage cast-iron chain chamber channel Class 52 compressed air consists construction cubic feet cylinder driving Eiffel Tower elevation engine estuary exhibited Exposition fabric Figure frame francs GARABIT VIADUCT gates gear girders Honfleur horizontal horse-power hour hydraulic inches joint kilograms knitting lamp length Les Fontinettes lever lift load lock locomotive lower machine Machinery Hall masonry means meter thick meters high meters long meters wide millimeters milling machine motion motors movable needles opening operation Paris passes piers pipe piston placed plate plunger pounds pressure pulley pump purlins rail reservoir revolutions per minute screw shaft shown in Fig side slide sluice southern training speed spindle square steam steel stroke surface thread tion tons tower training walls tube turbine upper uprights valve vertical weight wheel width
Popular passages
Page 178 - ... effect, perform the functions of a fly-wheel, but with the important mechanical difference that they utilize the constant pressure of compressed air instead of the energy of momentum. Their action is readily controlled, and their power can not only be exactly proportioned to the work to be overcome, but is entirely unaffected by the speed of the engine. The same amount of expansion can be obtained in the same engine, whether running at a piston speed of 10 feet per minute or at 150. This latter...
Page 349 - ... at any angle. 2. A holder to be used in grinding the side or base of the shank of tool. 3. A chuck by means of which any bent tool can be ground on all its faces, without changing its position in its chuck, with as much ease as the grinding of straight tools. 4. A chuck to hold splining or key-seating tools in the same manner. 5. A crane for lifting the wheel-cover, changing the wheel on its spindle, lifting chucks, etc. 6. Tables or diagrams, supported on a convenient holder, showing angles...
Page 177 - These pistons act in such a way with respect to the motion of the engine as to resist its advance at the commencement of the stroke and assist it at the end, the air, meanwhile, exerting its unvarying pressure at each point of the stroke.
Page 177 - By tbus alternately taking up and exerting power through the difference in the angle at which their force is applied with respect to the line of motion of the plunger rod, these two cylinders, in effect, perform the functions of a fly-wheel, but with the important mechanical difference that they utilize the constant pressure of compressed air instead of the energy of momentum. Their action is readily controlled, and their power can not only be exactly proportioned to the work to be overcome, but...
Page 667 - Honflenr would be raised to high-water level. This large reduction in tidal capacity would reduce the tidal current through the narrowed entrance, and consequently diminish again the depth in the channel.
Page 174 - ... pumps in which the pressure of the steam in the steam cylinder is transferred to the piston or plunger in the pump in a direct line and through the use of a continuous rod or connection. In pumps of this construction the moving parts have no weight greater than that required to produce sufficient strength in such parts for the work they are expected to perform ; as there is, consequently, no opportunity...
Page 177 - The two cylinders act in concert, and, being placed directly opposite each other, relieve the crosshead to which they are attached of any sliding frictional resistance, and the engine of any lateral strain.
Page 667 - ... surprised to hear the Mersey held up as worthy of imitation, for he regarded it as most unsatisfactory, with its shallow channels both above and below the narrows (Fig. 7), and peculiarly difficult to improve. Undoubtedly the narrowing of the mouth of the Estuary of the Seine, proposed by Mr. Partiot, would at first promote scour, and increase the depth in that part of the channel, and for a little distance above and below. This contraction, however, would impede the influx of the flood-tide,...
Page 667 - ... the mouth of the estuary might be more gradual. He considers, however, that the continuously concave southern training-wall, whilst very favourable to Honfleur, will unduly keep the ebb-current to that side, and therefore away from Havre. Also he thinks that the extension of the wall along the Ratier Bank will act like a groyne, and, arresting the silt-bearing southern current, will connect Trouville Bank with the shore, and lead to a large accumulation i Minutes of Proceedings Inst.
Page 830 - French art and history, against the erection in the heart of our capital of the useless and monstrous Eiffel Tower, which the public has scornfully and rightly dubbed the Tower of Babel.