Farm Mechanics: Machinery and Its Use to Save Hand Labor on the Farm.Shearer, Herbert A.
Science
Farm Mechanics: Machinery and Its Use to Save Hand Labor on the Farm.
Shearer, Herbert A.
Agricultural machinery
The belt is less in the way if it is brought up from below. This is not
difficult to do. A grindstone turns slower than any other farm machine
so a speed reducing jack may be bolted to the floor at the back of the
grindstone a little to one side to escape the drip. This arrangement
requires a short belt but it may have the full face width of the pulley
as the tight and loose pulleys are on the jack shaft.
_Emery Grinders._--There are small emery wheels made for grinding disks
that work quickly and cut an even bevel all around. They are made in
pairs and are attached to the ends of a mandrel supported by a metal
stand which is bolted to a bench. The same rig is used for sickle
grinding and other farm jobs.
[Illustration: Figure 36.--Emery Grinder. The illustrations show two
kinds of grinding that double emery wheels are especially adapted to. To
grind a mowing-machine knife it is necessary to reverse. By placing the
rest opposite the center between the two wheels the bevel will be the
same on both sides, or edges, of the section.]
BLACKSMITH SHOP
The furniture in a blacksmith shop consists of forge, anvil, half
barrel, vise bench, drill press and tool rack. A farm shop also has a
heating stove, shave horse, a woodworking bench, a good power driven
grindstone and a double emery grinder.
_Forge._--The old-fashioned forge laid up with brick in connection with
an old-fashioned chimney is just as popular as ever. The same old tuyer
iron receives the air blast from the same old style leather bellows, and
there is nothing more satisfactory. But there are modern portable
forges, Figure 37, made of iron, that are less artistic, cheaper, take
up less room and answer the purpose just about as well. The portable
iron forge has a small blower attached to the frame which feeds oxygen
into the fire. There are a good many different sizes of portable forges.
Most of them work well up to their advertised capacity.
[Illustration: Figure 37.--Portable Forges. The smaller forge is for
light work such as heating rivets for iron bridge construction. The
larger forge to the right is meant for blacksmith work.]
Generally, farm forges are not required to develop a great amount of
heat. Farmers do but little welding, most of the forge work on the farm
being confined to repair work such as heating brace irons, so they may
be easily bent into the proper shape, or to soften metal so that holes
may be punched through it easily.
Sharpening harrow teeth, drawing out plow points and horseshoeing are
about the heaviest forge jobs required in a farm blacksmith shop, so
that a medium size forge will answer the purpose.
[Illustration: Figure 38.--Anvil. The only satisfactory anvil is forged
out of ingot steel with a power trip-hammer. It should weigh 140
pounds.]
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