Lucas’ process making Malleable Iron Castings. Edward W. Byrn.十九世纪发明进展.
In 1834 Henry Bessemer electro-plated lead castings with copper in the production of antique relief heads. Edward W. Byrn.十九世纪发明进展.
Near the tumblers are the grinding wheels, upon which are ground off the rough edges and the castings put into shape for the machine shop. 佚名.神奇的知识之书.
Small metal stars are placed in these tumblers with the castings, and when the tumbler is full it is started revolving. 佚名.神奇的知识之书.
As our business increased enormously, our quarters became too small, so we saw the district Tammany leader and asked him if we could not store castings and other things on the sidewalk. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The production of Bessemer steel in the United States for 1897 was for ingots and castings 5,475,315 tons, and for railroad rails 1,644,520 tons. Edward W. Byrn.十九世纪发明进展.
In the machining of the cylinder castings, and the operation of assembling the motor, close inspection of the work is noticeable. 佚名.神奇的知识之书.
This shakes all the sand from the castings and they come out clean and bright. 佚名.神奇的知识之书.
Henry Bessemer electro-plates lead castings with copper. Edward W. Byrn.十九世纪发明进展.
The eighteenth century did have its glowing grates, and its still more glowing furnaces of coal in which the ore was melted and by the light of which the castings were made. 威廉·亨利·杜利特.世纪发明.
This process continues for some time, depending on the size of the castings. 佚名.神奇的知识之书.
The making of iron castings malleable by a prolonged baking in a furnace in a bed of metallic oxide was an important, but early, step. Edward W. Byrn.十九世纪发明进展.
Nickel is employed for cheaper ornamental effect, and copper finds a large application for electrotypes for printing and for coating iron castings as a protection against rust. Edward W. Byrn.十九世纪发明进展.
The framework in which the motor was placed consisted of a double hollow square of steel tubing, joined at the rear corners by steel castings and by malleable castings in front. 佚名.神奇的知识之书.
As soon as the castings have cooled sufficiently they are put into great horizontal cylinders, called tumblers. 佚名.神奇的知识之书.
Pasteur thought that in places where sheep dead of anthrax had been buried, the microbes were brought to t he surface in the castings of earthworms. 李贝.西洋科学史.
The addition of phosphorus promotes the fluidity of the metal and makes very clean, fine and strong castings. Edward W. Byrn.十九世纪发明进展.