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A Rose window (or Catherine window) is often used as a generic term applied to a circular window, but is especially used for those found in churches of the Gothic architectural style and being divided into segments by stone mullions and tracery. The name "rose window" was not used before the 17th century and according to the Oxford English Dictionary, among other authorities, comes from the English flower name rose.

Rose Window, Church of St. Ouen, Rouen

A Rose window (or Catherine window) is often used as a generic term applied to a circular window, but…

The Annual Excursion of the Congo Fishing Club. Chorus of members :— "Hey, there, in the stern! Trim the boat!"

Congo Fishing Club Annual Excursion 1

The Annual Excursion of the Congo Fishing Club. Chorus of members :— "Hey, there, in the stern!…

The Annual Excursion of the Congo Fishing Club. The thick-skinned member :— "Beg pardon, were you speaking to me?"

Congo Fishing Club Annual Excursion 2

The Annual Excursion of the Congo Fishing Club. The thick-skinned member :— "Beg pardon, were…

The wharf of a fishing community. Boats are docked at along the side and a warehouse sits on the landward side.

Wharf

The wharf of a fishing community. Boats are docked at along the side and a warehouse sits on the landward…

"Lord Kelvin patented a brake in 1858 consisting of a rope or cord wrapped round the circumference of a rotating wheel, to one end of which is applied a regulated force, the other end being fixed to a spring balance." -Britannica, 1910

Brake

"Lord Kelvin patented a brake in 1858 consisting of a rope or cord wrapped round the circumference of…

"Settee. A vessel with one deck and a very long sharp prow, carrying two or three masts with lateen sails, used on the Mediterranean." -Whitney, 1911

Settee

"Settee. A vessel with one deck and a very long sharp prow, carrying two or three masts with lateen…

"Singer sewing-machine. a is the frame and cloth-plate or bed-plate; b, arm; c, treadle; e, pitman; d, main driving-wheel; f, band; g, small driving-wheel attached to shaft ... j, take-up lever with roller and stud; k, presser-bar carrying presser-foot; l, needle-bar; m, spool-pin; ... t, drawers." -Whitney, 1911

Singer Sewing Machine

"Singer sewing-machine. a is the frame and cloth-plate or bed-plate; b, arm; c, treadle; e, pitman;…

"Singer sewing-machine. a is the frame and cloth-plate or bed-plate; b, arm; ... g, small driving-wheel attached to shaft h; i, take-up cam with set-screw; j, take-up lever with roller and stud; ... m, spool-pin; n, shuttle-pitman taking motion from crank o; p, shuttle bell-crank; q, shuttle-carrier and shuttle; r, thread-guide; s, tension-disk ..." -Whitney, 1911

Singer Sewing Machine

"Singer sewing-machine. a is the frame and cloth-plate or bed-plate; b, arm; ... g, small driving-wheel…

A sounding machine on a cable steamer.

Sounding Machine

A sounding machine on a cable steamer.

A man on a ship "paying out" the cable.

"Paying Out" the Cable

A man on a ship "paying out" the cable.

A frame with a spinning wheel in the foregroud. A ship can be seen on the left and a church steeple on the right.

Spinning Wheel

A frame with a spinning wheel in the foregroud. A ship can be seen on the left and a church steeple…

Fishermen on a boat with a small boy. A sailboat can be seen in the background as well.

Fishermen

Fishermen on a boat with a small boy. A sailboat can be seen in the background as well.

The sharp or sharpie is a long, narrow sailboat with a flat bottom used for oystering.

Sharpie

The sharp or sharpie is a long, narrow sailboat with a flat bottom used for oystering.

The sheer hulk is a ship that is afloat but incapable of going to sea. It was used as a crane to help construct ships with its sheers (masts).

Sheer Hulk

The sheer hulk is a ship that is afloat but incapable of going to sea. It was used as a crane to help…

"Frame of a vessel supported by shores." A shore is a "post or beam of timber or iron for the temporary support of something; a prop." -Whitney, 1911

Shores

"Frame of a vessel supported by shores." A shore is a "post or beam of timber or iron for the temporary…

The deadbeat has a second face on the pallets, called the 'locking' face, with a curved surface concentric with the pivot that the anchor turns on. When an escape wheel tooth is resting against one of these faces, its force is directed through the pivot axis, so it gives no impulse to the pendulum, allowing it to swing freely. During most of the pendulum's swing, the tooth is in this locked position. Near the bottom of the pendulum's swing the tooth slides off the locking face onto the slanted 'impulse' face of the pallet, allowing the escape wheel to turn and give the pendulum a push, before dropping off the pallet. The drag of the escape tooth on the locking face does add a small amount of friction to the pendulum's swing (this is called a frictional rest type escapement), but it is usually negligible. In contrast to the backward slant of the anchor escape wheel teeth, the deadbeat escape wheel teeth usually slant forward to ensure that the tooth makes contact with the locking face of the pallet, preventing recoil.

Deadbeat Escapement

The deadbeat has a second face on the pallets, called the 'locking' face, with a curved surface concentric…

An illustration of pin-wheel escapement.

Pin-Wheel Escapement

An illustration of pin-wheel escapement.

A gravity escapement uses a small weight or a weak spring to give an impulse directly to the pendulum. The earliest form consisted of two arms which were pivoted very close to the suspension spring of the pendulum with one arm on each side of the pendulum. Each arm carried a small dead beat pallet with an angled plane leading to it. When the pendulum lifted one arm far enough its pallet would release the escape wheel. Almost immediately another tooth on the escape wheel would start to slide up the angle face on the other arm thereby lifting the arm. It would reach the pallet and stop. The other arm meanwhile was still in contact with pendulum and coming down again to a point lower than it had started from. This lowering of the arm provides the impulse to the pendulum. The design was developed steadily from the middle of the 18th century to the middle of the 19th century. It eventually became the escapement of choice for turret clocks.

Mudge's Gravity Escapement

A gravity escapement uses a small weight or a weak spring to give an impulse directly to the pendulum.…

A gravity escapement uses a small weight or a weak spring to give an impulse directly to the pendulum. The earliest form consisted of two arms which were pivoted very close to the suspension spring of the pendulum with one arm on each side of the pendulum. Each arm carried a small dead beat pallet with an angled plane leading to it. When the pendulum lifted one arm far enough its pallet would release the escape wheel. Almost immediately another tooth on the escape wheel would start to slide up the angle face on the other arm thereby lifting the arm. It would reach the pallet and stop. The other arm meanwhile was still in contact with pendulum and coming down again to a point lower than it had started from. This lowering of the arm provides the impulse to the pendulum. The design was developed steadily from the middle of the 18th century to the middle of the 19th century. It eventually became the escapement of choice for turret clocks.

Bloxam's Gravity Escapement

A gravity escapement uses a small weight or a weak spring to give an impulse directly to the pendulum.…

An illustration of Hope Jone's dial-driving device. "Each time that a current is sent by the master clock, the electromagnet B attracts the pivoted armature C, and then the current ceases the lever D with the projecting arm E is driven back to its old position by the spring F, thus driving the wheel A forward one division. G is a back stop click, and H, I fixed stops." —Britannica, 1910

Dial Driving Device

An illustration of Hope Jone's dial-driving device. "Each time that a current is sent by the master…

"A sloop-yacht with a jib, the jib-stay being fastened to a bowsprit." -Whitney, 1911

Raceabout

"A sloop-yacht with a jib, the jib-stay being fastened to a bowsprit." -Whitney, 1911

A seaside community with small boats on the shore and a large ship out to sea.

Fishing Community

A seaside community with small boats on the shore and a large ship out to sea.

"Side-delivery rake, a horse-rake in which the rake is suspended between the axle of the pair of wheels and a third or caster-wheel trailing at the end of the rake, and placed in a position diagonal to the direction in which the machine moves. By means of suitable mechanism, operated through gearing on the axle, the hay, as fast as it is gathered, is delivered at the side of the rake and deposited on the ground in the form of a windrow." -Whitney, 1911

Side Delivery Rake

"Side-delivery rake, a horse-rake in which the rake is suspended between the axle of the pair of wheels…

"Riding-boom. A boat-boom or long spar working in a hinge or goose-neck, designed to be lowered from abreast the fore-rigging to a horizontal position at right angles with the keel of the vessel ... a, life-line; b, lift; c, riding-boom; d, rope ladder; e, outhaul; f, after-boom guy." -Whitney, 1911

Riding Boom

"Riding-boom. A boat-boom or long spar working in a hinge or goose-neck, designed to be lowered…

"Hawser-rudder. a, hawser; bb, hauling-lines, leading through chocks on each quarter." -Whitney, 1911

Hawser Rudder

"Hawser-rudder. a, hawser; bb, hauling-lines, leading through chocks on each quarter." -Whitney, 1911

"Running-part. Naut., that part of a rope which is hauled upon is called the hauling-part (b), the part between the blocks is the running-part (a), and the part which is made fast is referred to as the standing-part (c)." -Whitney, 1911

Running Part

"Running-part. Naut., that part of a rope which is hauled upon is called the hauling-part (b), the part…

A hobby horse (or hobby-horse) is a child's toy horse, particularly popular during the days before cars. Just as children today imitate adults driving cars, so, in former times, children played at riding a wooden hobby-horse made of a straight stick with a small horse's head (of wood or stuffed fabric), and perhaps reins, attached to one end. The bottom end of the stick sometimes had a small wheel or wheels attached.

Hobby Horse

A hobby horse (or hobby-horse) is a child's toy horse, particularly popular during the days before cars.…

An illustration of the Otto dicycle. A dicycle is a vehicle with two wheels parallel to each other, unlike the usual bicycle, which have a wheel followed by another, called tandem placed wheels.

Otto Dicycle

An illustration of the Otto dicycle. A dicycle is a vehicle with two wheels parallel to each other,…

An illustration of two forms of Italian potter's wheels.

Pottery Wheels

An illustration of two forms of Italian potter's wheels.

"Endless screw, a mechanical arrangement consisting of a screw the thread of which gears into a wheel with skew teeth, the obliquity corresponding to the angle of pitch of the screw." -Whitney, 1911

Endless Screw and Wheel

"Endless screw, a mechanical arrangement consisting of a screw the thread of which gears into a wheel…

"Epicycloidal wheel, a wheel or ring fixed to a framework, toothed on its inner side, and having in gear with it another toothed wheel, of half the diameter of the first, fitted so as to revolve about the center of the latter. It is used for converting circular into alternate motion, or alternate into circular." -Whitney, 1911

Epicycloidal Wheel

"Epicycloidal wheel, a wheel or ring fixed to a framework, toothed on its inner side, and having in…

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between…

An illustration of a three triangles created with boats and a lighthouse. This is an example illustration used to fine the height of an object situated about the plane of observation, and its height above the plane.

Triangle with Lighthouse

An illustration of a three triangles created with boats and a lighthouse. This is an example illustration…

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley Blocks

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel…

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley Blocks

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel…

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley Blocks

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel…

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between…

A piece in clocks and watches that converts rotational motion into oscillation, as in a pendulum.

Recoiling Escapement

A piece in clocks and watches that converts rotational motion into oscillation, as in a pendulum.

A piece in clocks and watches that converts rotational motion into oscillation, as in a pendulum.

Deadbeat Escapement

A piece in clocks and watches that converts rotational motion into oscillation, as in a pendulum.

A scene from the book The Young Wrecker, showing the hero Fred Ransom as he "plunged into the arms of a man at the helm." -Bache, 1865

A Man and a Boat on a Ship

A scene from the book The Young Wrecker, showing the hero Fred Ransom as he "plunged into the arms of…

Four boys and their dog rowing a small boat to the shore.

Boys Rowing a Boat

Four boys and their dog rowing a small boat to the shore.

From, Bache's book The Young Wrecker, the boy Fred Ransom defends himself against a Native American man.

Fred Ransom and a Native American

From, Bache's book The Young Wrecker, the boy Fred Ransom defends himself against a Native American…

"Wheel. a, felly; b, spoke; c, hub." -Whitney, 1911

Wheel Showing Parts

"Wheel. a, felly; b, spoke; c, hub." -Whitney, 1911

The felucca is a sailing vessel used to protect the Red Sea and the eastern part of the Mediterranean Sea.

Felucca

The felucca is a sailing vessel used to protect the Red Sea and the eastern part of the Mediterranean…

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle of a carriage. It is designed to support the fore part of the body while allowing it to turn freely in a horizontal plane." Today, the fifth wheel is used in coupling of trailers and towing trucks. -Whitney, 1911

Fifth Wheel

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle…

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle of a carriage. It is designed to support the fore part of the body while allowing it to turn freely in a horizontal plane." Today, the fifth wheel is used in coupling of trailers and towing trucks. -Whitney, 1911

Fifth Wheel

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle…

A rotifer or wheel animalcule (Floscularia ornata) is a microscopic animal named for the cilia used in motion.

Rotifer

A rotifer or wheel animalcule (Floscularia ornata) is a microscopic animal named for the cilia used…

An illustration of a man and woman walking on the deck of a ship.

Man and Woman Walking on Deck

An illustration of a man and woman walking on the deck of a ship.

"A drill to which a steady momentum is imparted by means of a fly-wheel having a reciprocating motion like that of the balance-wheel of a watch." -Whitney, 1911

Fly Drill

"A drill to which a steady momentum is imparted by means of a fly-wheel having a reciprocating motion…

"Nautical: A rope extended under a yard from the middle to the yardarm, and under the jib- and spanker-booms, for the men to stand on while reefing or furling." -Whitney, 1911

Footrope of Sailing Vessel

"Nautical: A rope extended under a yard from the middle to the yardarm, and under the jib- and spanker-booms,…

"In machinery, a form of slip-coupling applied in cases where the variations of load are sudden and great, as in dredging-machinery, etc. In the form illustrated a strong pulley, B, is keyed on the driving-shaft, and on the circumference of this wheel, A, is fitted, with a series of friction-plates, a, a, a, interposed, and retained in recesses formed in the eye of the wheel." -Whitney, 1911

Friction Wheel

"In machinery, a form of slip-coupling applied in cases where the variations of load are sudden and…

An illustration of a human powered boat with three passengers.

Boat Under Bridge

An illustration of a human powered boat with three passengers.

An illustration of a large wind powered ship.

Large Ship with Sails

An illustration of a large wind powered ship.

An illustration of a woman balancing on a wheel.

Woman Balancing

An illustration of a woman balancing on a wheel.

An illustration of a tug boat in fog.

Tugboat in Fog

An illustration of a tug boat in fog.

An illustration of two girls in a boat feeding two swans.

Girls & Rowboat

An illustration of two girls in a boat feeding two swans.

An illustration of two boys and a boat.

Two Boys and a Boat

An illustration of two boys and a boat.

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a boat.

Boat

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a boat.

Boat

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a boat.

Boat

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…