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Ingenious mode of ventilating ships
F,rankl'in Institute.
284:
The experiments in Woolwieh Yard, under the direction of Charles Atherton, Esq., Chief Engineer, commenced with trials to ascertain whether the coating process acted injuriously upon the iron. Bars of iron of' various sizes were cut into equal lengths~ and a certain number of each size were then coated. These were tested in the hydraulic machine with an equal number of the uncoated lengths; no difference in their strengths could be perceived. Other lengths were subjected to cold hammering, being bent double and beaten close, but the texture of the iron was not at all injured. Iron bolts with a solid end of copper, were then turned to exactly an inch in diameter and placed in the proving machine; in all cases the ti'aeture took place in the solid copper, and not at the juncture of the two metals, which it was afterwards found impossible to sever wilh a strain equal to 21"6 tons to a square inch. Deck nails were then driven into deal and African oak without injuring the heads, although in some instances no hole was bored to receive thetm Two logs of Aft'lean oak were bolted together with the pointed bolts, which were afterwards clinched in the usual way; the logs were then wedged asunder, tile heads drawing through the solid wood. This experiment was repeated, a copper bolt being substituted for one of the compound bolts; when the logs were set apart the copper bolt drew through the rings, the other standing firm. The trials were pronounced highly satisfactory by the ottieers appointed to superintend them. Is this the process patented in this country by Mr. Pomeroy, o.f Baltimore, and reported on in 25th Vol., p. 213, of this Jottrnrzl ? The results resemble each other very much. Mr. Pomeroy~s patent dates from 9th July, 1849~ although issued 8th January, 1850. En.
hTgen.ious 31ode of Ventilating Sl@s.* Tile ship Eva~geline, recently launched by Messrs. Jord~an and Getty, has been fitted with iron masts, which are hollow cylinders, and which have been fitted with trap doors at either end, to open or shut at pleasure, for the ventilation of the ship. It has been fbund that a perfect ventBation can be accomplished by these masts, even when the ship is stationary, which is a desideratum in passenger ships seldom attained. The .Evangeline has taken her departure for New Orleans, with goods and passengers, the latter being chiefly Germans. She belongs to Messrs. Clint & Co.--Liverpool Times.
FRANKLIN
INSTITUTE.
Proceedings ( f the Slated J]foz~thly ~Ieel,i~g, September 15, I853. John E. Addicks, Esq., President, P. T., in the chair. John F. Frazer, Treasarer. Isaac 13. Gar,igues, Recording Secretary. * From tim London Railway an~ Commercial Gazette, No. 924.
284:
The experiments in Woolwieh Yard, under the direction of Charles Atherton, Esq., Chief Engineer, commenced with trials to ascertain whether the coating process acted injuriously upon the iron. Bars of iron of' various sizes were cut into equal lengths~ and a certain number of each size were then coated. These were tested in the hydraulic machine with an equal number of the uncoated lengths; no difference in their strengths could be perceived. Other lengths were subjected to cold hammering, being bent double and beaten close, but the texture of the iron was not at all injured. Iron bolts with a solid end of copper, were then turned to exactly an inch in diameter and placed in the proving machine; in all cases the ti'aeture took place in the solid copper, and not at the juncture of the two metals, which it was afterwards found impossible to sever wilh a strain equal to 21"6 tons to a square inch. Deck nails were then driven into deal and African oak without injuring the heads, although in some instances no hole was bored to receive thetm Two logs of Aft'lean oak were bolted together with the pointed bolts, which were afterwards clinched in the usual way; the logs were then wedged asunder, tile heads drawing through the solid wood. This experiment was repeated, a copper bolt being substituted for one of the compound bolts; when the logs were set apart the copper bolt drew through the rings, the other standing firm. The trials were pronounced highly satisfactory by the ottieers appointed to superintend them. Is this the process patented in this country by Mr. Pomeroy, o.f Baltimore, and reported on in 25th Vol., p. 213, of this Jottrnrzl ? The results resemble each other very much. Mr. Pomeroy~s patent dates from 9th July, 1849~ although issued 8th January, 1850. En.
hTgen.ious 31ode of Ventilating Sl@s.* Tile ship Eva~geline, recently launched by Messrs. Jord~an and Getty, has been fitted with iron masts, which are hollow cylinders, and which have been fitted with trap doors at either end, to open or shut at pleasure, for the ventilation of the ship. It has been fbund that a perfect ventBation can be accomplished by these masts, even when the ship is stationary, which is a desideratum in passenger ships seldom attained. The .Evangeline has taken her departure for New Orleans, with goods and passengers, the latter being chiefly Germans. She belongs to Messrs. Clint & Co.--Liverpool Times.
FRANKLIN
INSTITUTE.
Proceedings ( f the Slated J]foz~thly ~Ieel,i~g, September 15, I853. John E. Addicks, Esq., President, P. T., in the chair. John F. Frazer, Treasarer. Isaac 13. Gar,igues, Recording Secretary. * From tim London Railway an~ Commercial Gazette, No. 924.