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"Block shears act with additional leverage, and can consequently be used for rather thicker metal, the upper bow being replaced by a long straight handle, and the lower one by a stake which can by firmly fixed in a block of woood or otherwise." — Encyclopedia Britannica, 1893

Block Shears

"Block shears act with additional leverage, and can consequently be used for rather thicker metal, the…

Specialized implements used to cut human head hair. They should not be confused with razors (which usually refer to tools used to cut facial hair or bodily hair) and scissors.

Hair Clipper

Specialized implements used to cut human head hair. They should not be confused with razors (which usually…

A bulb like solid, fleshy subterranean stem, producing leaves and buds on the upper surface.

Corm

A bulb like solid, fleshy subterranean stem, producing leaves and buds on the upper surface.

"An old arrangement known as cropping shears, still in use at many iron-works, where early appliances seem to enjoy a remarkable vitality." —The Encyclopedia Britannica, 1903

Cropping Shears

"An old arrangement known as cropping shears, still in use at many iron-works, where early appliances…

A tool used for cutting metals. "a and c, levers connected by a link bar b, and respectively pivoted at f and f1 to the frame e. By the arrangement of the levers the movable blade d, attached to c, acts with a strong purchase in combination with the stationary blade d1, rigidly attached to the frame e." —Whitney, 1889

Purchase Shears for Cutting Metal

A tool used for cutting metals. "a and c, levers connected by a link bar b, and respectively pivoted…

"Shear is a particular form of strain produced by causing plane layers of a material to slide parallel to one another through spaces proportional to their distances from a fixed parallel plane"—Finley, 1917

Shear

"Shear is a particular form of strain produced by causing plane layers of a material to slide parallel…

"...shows a piece in double shear; here the central piece c d is forced out, while the ends remain on their supports M and N." —Hallock 1905

Double Shear

"...shows a piece in double shear; here the central piece c d is forced out, while the ends remain on…

"A self-contained shearing and punching machine. The apparent ease with which machines of this kind, acting with a slow quiet stroke, shear or perforate plates of iron, even when of considerable thickness, gives an altogether false impression of the amount of power which the operation requires." —The Encyclopedia Britannica, 1903

Shearing Machine

"A self-contained shearing and punching machine. The apparent ease with which machines of this kind,…

"The shearing strength of any material is the resistance offered by its fibers to being cut in two, as shown [here]." —Hallock 1905

Shearing Strength

"The shearing strength of any material is the resistance offered by its fibers to being cut in two,…

Metal cutting shears although similar to a pair of scissors feature a fulcrum closer to the cutting blades than the handles to increase mechanical advantage. Shears are able to cut through many thin sheets of metal.

Shears for Cutting Metal

Metal cutting shears although similar to a pair of scissors feature a fulcrum closer to the cutting…

Sheared sheep runs away from shepherd.

Sheep shearing

Sheared sheep runs away from shepherd.

"The ordinary sheet-metal shears merely resemble very powerful scissors, and, their action being quite local, they serve well for dividing the plates or other thin sheets for which alone they are suitable." — Encyclopedia Britannica, 1893

Sheet-metal Shears

"The ordinary sheet-metal shears merely resemble very powerful scissors, and, their action being quite…