OCR Text |
Show MECHANICAL SCIENCE, t Tun pr.ietleo of "cold sawing" of steel uud Iron Is being generally ndopted . 'ySJMrtja-'i-.-. Imit.ovi ii engine prnctlco has caused the adoption of n tnocliaiilc.il device for constant fiediug of fuel to thu furnaces, fur-naces, , A Nt vv mode of, furnishing power In motor engines hy mlvlng ktvain with hot gnses is eieatiug a great deal of interest in-terest in Lngllsh elides. . Pkat fuel has been found very fciie-cessful fciie-cessful In Uitshhi. It is produced liy a patent process, nnd Is elie iier th in coal.luu less weight and hulk, and contains con-tains scarcely uny sulphur. IlMiS has liven rollul tn the thinners of 1-lStK) of uu Inch This excessive tenuity will be iiinh rshxxl ulicu ills considered that the thinnest tissue paper measures. l-L'ooof mi lm.li. Spikvi'R comes to the trout In the inamif.i. turn of grindstones. Tim tx-st now made mo coniised of a mUturo ( pulverlred iiuiiit, powderi'd Hint, pondered emery, nnd nihlwr. They outvveur by many years any natural stono. |