ratchet wheel

In 1804 he invented a ratchet wheel that moved the cloth forward automatically.

A ratchet wheel is attached with a click level to take up the slack in the cloth.

Each shaft with its dial was provided with two ratchet wheels, one the reverse of the other.

The engine made a dry, gasping sound, like the catching of a pawl against a ratchet wheel.

A cast-iron ratchet wheel dropped out and landed squarely on Darll's foot.

The Train to the Clouds is notable for using switchbacks to ascend instead of a ratchet wheel.

Ratchet wheel and ilustr.

Venera saw that he stood on a low platform, at the center of which was a boxy machine that clamped the cable with big ratchet wheels.

A hand powered hoist with a ratchet wheel is known as a "ratchet lever hoist" or, colloquially, a "come-along".

One was used in connection with the propelling lever, which was provided with a pawl to fit into the teeth of the reversed ratchet wheel on its forward movement.

The high-cap magazines often have a ratchet wheel that can be wound up periodically to force pellets up from the holding chamber of the magazine to the feeding chute.

Sound waves entering a mouthpiece and falling on a diaphragm were conveyed by a piece of rubber tubing and a spring to a pawl, which vibrated against a very fine-toothed ratchet wheel.

A puzzled Marie Balandis of Houston writes: "My dictionary defines ratchet as a noun meaning 'a pawl, click or detent for holding or propelling a ratchet wheel.'

The pendulum drove a ratchet wheel via a pawl on the pendulum rod and the ratchet wheel drove the rest of the clock train to indicate the time.

In its usual construction this consists of a ratchet wheel sandwiched between, and co-axial with, the first (and slowest-turning) driving gear of the movement and the barrel that the weight (or spring) is attached to.

Also in this area is a striking six-foot-tall piece by Steven Rand, which is a kind of ratchet wheel made very ingeniously out of thick black cast-iron tubes clasped at intervals by bracelets of stainless steel.

When the stem is pushed in, the outer teeth turn the ratchet wheel on top of the mainspring barrel, which turns the shaft that the inner end of the mainspring is attached to, winding the mainspring tighter around the shaft.

There were butter churns and pitchforks, small sticks with a ratchet wheel on one end that is whirred to scare off birds, and distaffs and combs for spinning wool, lengths of rope, harnesses, horseshoes and cowbells, scythes and rakes.