In fact, a large part of inventors’ efforts throughout history have been devoted not to the creation of something new but to the improvement and development of existing devices—traditionally the domain of the engineer. Furthermore, invention and scientific discovery are frequently so closely ...
Inventor钣金造型指南(Inventor sheet metal modeling guide) Chapter vii molding of sheet metal 7.1 create sheet metal parts The application range of sheet metal is very wide, for example: computer host peripherals, iron gate and so on. The function of Inventor sheet metal has two main features: ...
The oil well Drake constructed was called "Drake's Folly" by some of the locals, who doubted it could ever be successful. But Drake persisted, with the help of a local blacksmith he had hired, William "Uncle Billy" Smith. With very slow progress, about three feet a day, the well kept...