e of the stone levers are cast upon those parts, so that all of the ap- on the pavement in Markct street, Philadelphia, in the highest parts. The cutting wheel is hung ina about a mile from the place where it was to be taken, paratus, excert the keys through the pins at the ful- carriage, D, which… … ed to George C. Howard, en- the spring should be broken. BROWN’S VIBRATING GRATE. gineer and machinist and He says also that a long manufacturer of machinists’ and tools, who may be stem may be dispensed with by passing the stem ofiron are employed. To secure a rectilinear motion addressed for…
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from Current architecture: published in connection with a joint exibition [sic] held in Boston November 1916 (1916)](https://img.insideoutlibrary.com/img/200/ia-currentarchitect1916bost-108-164.webp)
