PQ Hall of Fame Profile: Eli Whitney Blake, Blake Rock Crusher Co
Apr 1, 2015 Inventor revolutionizes road-building industry with stone crusher. Blake
received the patent for his crusher on June 15, 1858, but by the time
The Blake Rock Crusher – Today in History: June 15 | Connecticut
On June 15, 1858, Eli Whitney Blake of New Haven was granted US patent No.
20,542 for a “machine for crushing stone.” The nephew of cotton-gin inventor Eli
B02C1/04 Jaw crushers or pulverisers with single-acting jaws frames 12 and
13 United States Patent 0 through the openings 12a and 1311 Charles Roscoe
Improvements in machines for crushing ores, stone rock and other substances.
B02C1/04 Jaw crushers or pulverisers with single-acting jaws frames 12 and
13 United States Patent 0 through the openings 12a and 1311 Charles Roscoe
Improvements in machines for crushing ores, stone rock and other substances.
Apr 16, 2015 Then, in 1881, Philetus W. Gates was granted a patent on a machine which
included in its design all of the essential features of the modern
4. In a stone crusher, a solid metal bed formed with a c rusher box having straight
inclined crushing faces which are cut away near their bottom edges, slots formed
US2373691A - Stone crushing apparatus - Google Patents
A stone crusher, comprising a casing having openings therein for the introduction
of stone to be crushed and for the discharge of the crushed stone, a rotor
Hypatia in the Patent Office: Women Inventors and the Law - JSTOR
role, if any, have women played in the American patent system? This article to
Florentine L. Stone and A.R. Wellman for boot or shoe tree); 53 Off. Gaz. Pat.
Office 342 (Oct. elevator and conveyer for coke-crushers.238 Carrie J. Everson,
a.