The Science record; a compendium of scientific progress and discovery . ombs were closed by abronze screw plug through which passed an isolated wire,which conducted a current sufficient to heat a thinnerwire within to redness and thus inflame the charge. Theywere placed in a copper vessel feet in diameter, feetin height, and containing about 4 pounds of water. Thetemperature of the bath was determined by the end of athermometer graduated to tenths of a degree, with read-ing to hundredths. The water was first brought to a tem-perature equal to that of the surrounding atmosphere,the expl
The Science record; a compendium of scientific progress and discovery . ombs were closed by abronze screw plug through which passed an isolated wire,which conducted a current sufficient to heat a thinnerwire within to redness and thus inflame the charge. Theywere placed in a copper vessel feet in diameter, feetin height, and containing about 4 pounds of water. Thetemperature of the bath was determined by the end of athermometer graduated to tenths of a degree, with read-ing to hundredths. The water was first brought to a tem-perature equal to that of the surrounding atmosphere,the explosion caused, and then the difference in warmthnoted. The following: results were obtained: Weight of raspsr lbs. Fine sporting powder, 78 °-337 Cannon 75 Musket Units of heat ulphur. Saltpetre. Charcoal. per powder. 78 ?2-5 75 74 15-5 72 6a Ordinary com. 72 fl ^lasting 63. 2 a 5 SCIENCE RECORD,. NEW GYROSCOPE GOVERNOR. NEW GYROSCOPE GOVERNOR. The accompanying plan of a recently invented gyro-scopic governor, which we find in Engineering, is simple inform and very sensitive in action. The device is con-tained in a casing in which the steam from the boilerenters, as shown. Motion is obtained from the bevelgearing, the horizontal wheel of which is keyed to aspindle which passes through the top of the case. Thisspindle is made in a single piece with the tubular portionrepresented as extending down into the pipe throughwhich the steam passes. The upper end of this tubularcasting is closed, and being caused to fit tightly, by thepressure of the steam against the lower extremity of thesocket through which the spindle enters the casing, asteam-tight joint is obtained without employing a stuff-ing-box. A brass sleeve, sliding freely on the tubular casting, has,formed in it a number of ports, which, when the sleeve
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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology
