While a woodpecker is drilling, the two parts of the bill are closed together, making a wedge-pointed…
The influx of Northern regiments of troops into Washington during the early days of the war rendered…
This is a Brace of the well known Stanley concealed ratchet type, but having a ball bearing chuck.
"Camp Dennison, sixteen miles above Cincinnati, on the banks of the Miami River, General Cox commanding-…
"General Berry, born in Thomaston (now Rockland), Me., August 27th, 1824, died at Chancellorsville,…
"Bird's-eye view of Camp Douglas, Chicago, Ill., used for the detention of Confederate prisoners in…
"The invasion of Pennsylvania- working on the fortifications near Harrisburg, Pa., June 16th, 1863.…
A combination seed drill and cultivator, used for planting small seed, peas, and beans.
"The Old South. This venerable and venerated edifice, that stood through all the storms of the Revolution,…
A kind of pointed instrument, used for boring holes, particularly in metals and other hard substances.
"For very small beds, drills, or furrows may be made by a simple marking-stick." — Baily, 1898
"A ratchet brace is a powerful instrument, and carries in itself the screw for obtaining the requisite…
"An ordinary vertical drilling machine, one of comparatively small size and single-geared having been…
"Three drill bits. The first the old, bad, but not yet quite superseded pattern, which is incapable…
This set of numbers is used by a teacher to help the students practice adding numbers in columns. After…
Three students work from using dots as counters in columns (left) to writing the symbolic number (right).
Addition, subtraction, and multiplication wheels students use to spin and find the solutions.
This table wheel would be used to practice the six tables. The teacher would rapidly point to the surrounding…
This chart can be used for practice in subtraction. The teacher points to the outside numbers and the…
This chart can be used for practice in subtraction. The teacher points to the outside numbers and the…
An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical…
A brace or brace and bit is a hand tool used to drill holes, usually in wood. Pressure is applied to…
It consists of a steam cylinder and piston and its rod, and to the rod is firmly secured a steel rock-drill.…
"A drill to which a steady momentum is imparted by means of a fly-wheel having a reciprocating motion…
The original meaning of military tattoo is a military drum performance, but nowadays it sometimes means…
A step block supported by an arm clamp also holds a work piece which has been machined. The step block…
Gold mining consists of the processes and techniques employed in the removal of gold from the ground.…
A trommel is a screened cylinder used to separate materials by size, separating the biodegradable fraction…
"For brass or other soft metals there may be used with advantage a twist drill as shown. The cutting…
This is the body attachment for a drilling machine which is composed of the adjustable socket which…
This is a hammer drill, also known as a rotary hammer, a pneumatically powered mechanism which uses…
An electric or manual drill, which has jaws and a collar that is tightened to grip and hold the drill…
A style of drill that is mounted on a stand or bolted to the floor or workbench.