m.html#Page_49" class="pginternal">49, 167.

Fullers, combined spring, 131, 132;

top and bottom, 18, 19.

Gate hook, 62, 63, 64.

Grabhook, 80, 81, 82.

Grading iron, 174, 176.

Hack or cutter, 126, 127.

Hack saw, 27.

Hammer blows, 30-36.

Hammers, 7, 8;

ball peen, 8;

cross peen, 8;

drop, 123, 124;

hand, 8;

round and square-edged set, 15, 16, 111;

steam, 124, 125, 126;

straight peen, 8.

Handle punches, 16, 17.

Hand lever, 141, 142.

Hardening tool steel, 87-92;

wrought iron and soft steel, 92, 93.

Hardy, 12, 13, 111, 112.

Hasp, door, 64-66.

Heading tool, 19.

Heating, 48-50.

Heating air for blast furnace, 168-170;

tool steel, 85, 86.

Heavy boring tool, 103;

flat tongs, 96, 97, 98.

Hollow bit tongs, 10, 11.

Hot cutter, 12-14, 109, 110.

Ingots, 185, 186.

Ingot stripper, 189.

Injuries to steel, 85.

Iron, cold-short, 168;

colors and temperatures for, 94;

25, 26.

Square-cornered angle, 67-69.

Square-edged set hammer, 15, 16, 111.

Standard dimensions of nuts and bolts, 197.

Staple, 58.

Steam hammer, 124, 125.

Steam hammer tools, 126-137.

Steam hammer work, exercises in, 137-145.

Steel, 183-196.

Steel, kind of, suitable for tools, 83.

Steel, tool, 83-95;

annealing of, 86, 87;

colors on surface of, 88, 89;

injuries to, 85, 86:

hardening and tempering of, 87-92;

oil-tempered, 90;

percentage of carbon in, 83-85;

proper and improper heating of, 85, 86;

proper and improper treatment of, 91, 92;

temperature and color charts for, 94;

two methods of hardening and tempering, 89, 90;

water annealing of, 87;

welding of, 48.

Steel, uses of different grades of, 84, 85.

Stock calculation for bonding, 118-121.

Straightening, 44, 45.

Sulphur in iron and steel, 168.

Surface plate, 20, 21.

Swage block, 19, 20.

Swages, combined top and bottom, 133, 134;

top and bottom, 17, 18, 134.

Swing sledge, see double-faced sledge.

Swivels, 76-80.

Tapered mandrels, 21, 22.

Taper tool, see bevel tool.

Tempering, temperature and color chart for, 94.

Tempering heat as determined by colors, 88-91;

by scientific apparatus, 91, 92.

Tempering tool steel, 87-92.

Threading tool, see light boring tool.

Tilting hammer, 186.

Transcriber’s Notes.

The spelling, punctuation and hyphenation from the original has been retained except for apparent typographical errors.