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"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding through the hull of a vessel at the stern. It consists of a number of spiral metal blades either cast together in one piece or bolted to a hub... C, cross section of blade, on larger scale." -Whitney, 1889

Screw Propeller, Cross Section of a Blade

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding through the hull of a vessel at the stern. It consists of a number of spiral metal blades either cast together in one piece or bolted to a hub. A. sectional elevation, the section being through shaft and hub, showing method of attaching blades h by bolts i." —Whitney, 1889

Screw Propeller, Sectional Elevation

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding through the hull of a vessel at the stern. It consists of a number of spiral metal blades either cast together in one piece or bolted to a hub. Side elevation." —Whitney, 1889

Screw Propeller, Side Elevation

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

This knife is a band of multi function pocket knife. Generally speaking a tool like this has a blade as well as other various tools, such as a screwdriver and knife sharpener intended for military and camping purposes. These attachments are stored inside the handle of the knife through a pivot point mechanism.

Combination Can Opening Knife Sharpening Screwdriver

This knife is a band of multi function pocket knife. Generally speaking a tool like this has a blade…

Used for mowing and reaping, consisting of a long curved blade fixed at an angle to a long bent handle.

Attachment Scythe

Used for mowing and reaping, consisting of a long curved blade fixed at an angle to a long bent handle.

"Railway Semaphore. a, lever, which operates both b, blade, and c, lantern." -Whitney, 1911

Railroad Semaphore

"Railway Semaphore. a, lever, which operates both b, blade, and c, lantern." -Whitney, 1911

Ordinary sheep-shears are not in any sense a pair of scissors. These simple shears have no pivot on which the blades turn.

Sheep-shearing Shears

Ordinary sheep-shears are not in any sense a pair of scissors. These simple shears have no pivot on…

"A dagger; specifically, an ancient form of dagger found Ireland, usually of bronze, double-edged, and more or less leaf-shaped, and thus distinguished from the different forms of the seax, or broad-backed knife." &mdash;Whitney, 1889 <p>Illustration of four different skeans of varying shape and size. The examples are from the Museum of the Royal Irish Academy, Dublin.

Skeans - Ancient Irish Daggers

"A dagger; specifically, an ancient form of dagger found Ireland, usually of bronze, double-edged, and…

This fish slice has an engraving on the blade of a fish scene. It is used as a fish knife for dinning on seafood.

Fish Slice

This fish slice has an engraving on the blade of a fish scene. It is used as a fish knife for dinning…

"A weapon consisting of a penetrating head attached to a long shaft of wood, designed to be thrust by or launched from the hand at an enemy or at game." —Whitney, 1889 <p>Illustration of two different hunting spears. The spear on the left has a long handle and a simple arrowhead. The spear on the right has a shorter handle and a crosspiece at the base of the blade with a curved blade attached.

Hunting Spears from the 15th or 16th Century

"A weapon consisting of a penetrating head attached to a long shaft of wood, designed to be thrust by…

A sword is a long-edged piece of metal, used as a cutting, thrusting weapon.

Sword

A sword is a long-edged piece of metal, used as a cutting, thrusting weapon.

A bench-shears is a tool with two short, stout blades and very long handles, one of them being fitted with a point to hold the shears firm on the bench.

Tinsmith's Shears

A bench-shears is a tool with two short, stout blades and very long handles, one of them being fitted…

This wallpaper trimmer is a manual wallpaper cutter that holds the blade in place to trim wallpaper. It can cut, shape, or profile wallpaper.

Wallpaper Trimmer

This wallpaper trimmer is a manual wallpaper cutter that holds the blade in place to trim wallpaper.…

"Leaf of a willow (Salix sp.). b, blade; p, petiole; s, stipules." -Gager, 1916

Willow Leaf

"Leaf of a willow (Salix sp.). b, blade; p, petiole; s, stipules." -Gager, 1916