Add to ORKGPatent for rotary boring drill with explanation and the accompanying illustrations
Patent for an improvement to the design of a rotary cultivator and chopper, including illustrations
Patent for an improved and simple apparatus for boring wells that is easily adjustable. The drill he...
Patent for a mechanism that drills and bores; it attaches to a vehicle so the engine can be used to ...
Patent for improvements to rotary boring drills that enable a drill to be assembled and disassembled...
Patent for an invention relating to "boring drills of the type having roller forms of cutters" (line...
Patent for improvement in pump-drills for boring artesian wells by “combining pump-valves and piston...
Patent for a machine that uses a grindstone to sharpen rotary saws. Includes instructions and illust...
Patent for an improved kind of drill bit that is more durable against rock. The bit's cutting roller...
Patent for improvements in earth-boring machines with new design and connections, including illustra...
Patent for a new and improved boring machine. This design "consists in the construction and novel ar...
Patent for a rotary plow. "It pertains to improvements in rotary plows" (p. 4). There is a detailed ...
Patent for a well-drilling apparatus that easily attaches drill-bits to the ends of drill-tubes with...
Patent for "Improvements in Combination Drill-Bits and Drill-Shanks" (lines 6-7) including illustrat...
Patent for a new and improved rotary spading machine. This design "consists in the combination of a ...
Patent for the improvement of the rotary engine through the arrangement of passages and system of pi...
Patent for an improvement to the design of a rotary cultivator and chopper, including illustrations
Patent for an improved and simple apparatus for boring wells that is easily adjustable. The drill he...
Patent for a mechanism that drills and bores; it attaches to a vehicle so the engine can be used to ...
Patent for improvements to rotary boring drills that enable a drill to be assembled and disassembled...
Patent for an invention relating to "boring drills of the type having roller forms of cutters" (line...
Patent for improvement in pump-drills for boring artesian wells by “combining pump-valves and piston...
Patent for a machine that uses a grindstone to sharpen rotary saws. Includes instructions and illust...
Patent for an improved kind of drill bit that is more durable against rock. The bit's cutting roller...
Patent for improvements in earth-boring machines with new design and connections, including illustra...
Patent for a new and improved boring machine. This design "consists in the construction and novel ar...
Patent for a rotary plow. "It pertains to improvements in rotary plows" (p. 4). There is a detailed ...
Patent for a well-drilling apparatus that easily attaches drill-bits to the ends of drill-tubes with...
Patent for "Improvements in Combination Drill-Bits and Drill-Shanks" (lines 6-7) including illustrat...
Patent for a new and improved rotary spading machine. This design "consists in the combination of a ...
Patent for the improvement of the rotary engine through the arrangement of passages and system of pi...
Patent for an improvement to the design of a rotary cultivator and chopper, including illustrations
Patent for an improved and simple apparatus for boring wells that is easily adjustable. The drill he...
Patent for a mechanism that drills and bores; it attaches to a vehicle so the engine can be used to ...