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Ram's-horn – Rose's Fusible Alloy

Ram's-horn

A hook used for passing loads from one crane to another. See DOUBLE-HOOK.

Rapping-bar

A pointed bar of iron with which to jar the pattern in order to make it leave the sand more readily. See LOOSENING-BAR.

Rectangle

A right-angled parallelogram; a four-sided figure having right angles only.

Red Ochre

One of the soft, earthy varieties of red-hematite iron ore. See RED-HEMATITE.

Red-short

Iron or steel is by the millmen termed red-short when it shows an impaired malleability at a red heat. See COLD-SHORT.

Red Tombac

See RED BRASS.

Revolving Oven

See ROTARY OVEN.

Ring-bolt

See EYE-BOLT.

Rising-head

See RISER.

Rock-oil

See PETROLEUM.

Rod-iron

The common round and square rolled iron, used in the foundry for making feeding-rods, gaggers, lifters, core-irons, mould-stiffeners, etc.

Rose's Fusible Alloy

This alloy melts at 201 deg., and is composed of bismuth 2, lead 1, and tin 1. See FUSIBLE ALLOYS.