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A portable hand drill.

Ratchet Drill

A portable hand drill.

This seeding machine was used to facilitate the process of planting seeds into the soil.

Machine, Seeding

This seeding machine was used to facilitate the process of planting seeds into the soil.

Ratchet drills.

Drill

Ratchet drills.

Chucking with taper shank twist drill.

Chucking Drill

Chucking with taper shank twist drill.

Chucking cored gear casting with four-grooved twist drill.

Twist Drill

Chucking cored gear casting with four-grooved twist drill.

Chucking pulley with flat drill.

Chucking Pulley

Chucking pulley with flat drill.

Jig vice on a plain radial drilling machine.

Jig Vise

Jig vice on a plain radial drilling machine.

Twist drill grooving formed milling cutter.

Twist Drill Grooving

Twist drill grooving formed milling cutter.

"1. In rope-drilling, a cylinder, provided with a valve at the bottom, which is lowered into the drill-hole from time to time to remove the pulverized rock, or sludge. Also called a sludger. 2. A powerful water-jet with an annular nozle inclosing a tube which is sunk in loose sand, and operates as an injector to lift the sand with the water which discharges back through the tube. a. sand to be removed, b. suction-pipe, c. induction-pipe, d. discharge-pipe" —Whitney, 1889

Sand Pump

"1. In rope-drilling, a cylinder, provided with a valve at the bottom, which is lowered into the drill-hole…