|
US2509990A
|
|
Tool ejector
|
|
US2401276A
|
|
Tripping mechanism
|
|
US2400603A
|
|
Apparatus for sampling workpieces
|
|
US2364318A
|
|
Supplemental counterbalance
|
|
US2333589A
|
|
Drilling machine
|
|
US2251761A
|
|
Spacing mechanism for machine tools
|
|
US2209939A
|
|
Automatically controlled gravity oiler
|
|
US2209938A
|
|
Lubricating means
|
|
US2244026A
|
|
Radial drill
|
|
GB500486A
|
|
Automatic reverse for screw tapping devices in machine tools
|
|
US2323488A
|
|
Automatic reverse for tapping machines
|
|
US2318336A
|
|
Tapping machine
|
|
US2155687A
|
|
Safety manual and power spindle drive
|
|
US2318335A
|
|
Spindle control for drilling and tapping machines
|
|
US2089228A
|
|
Combination drilling and tapping control
|
|
US2135441A
|
|
Welded bitubular column
|
|
US2108780A
|
|
Submerged motor
|
|
US2092336A
|
|
Revolving multiple spindle head
|
|
US2065477A
|
|
Head mounted control means for radial drills
|
|
US2065476A
|
|
Simplified control for drill spindles
|
