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Tell them you found it on anvilfire.com!
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Blacksmithing and metalworking questions answered.
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Blacksmithing and Metalworking Tools Historical Preservation.
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Forge blowers:
Air Pressures and Pipe Sizes for Forges
Blacksmiths' forges require air pressures varying from 1½ to 6 ounces per square inch.
Small forges with the blower close to them are adequately supplied with 1½ ounce pressure.
It the blower is some distance away and a long discharge pipe with many bends leads to the forge,
even though the later be small, it may be necessary to carry 3 ounces pressure or more, to overcome friction in the air ducts.
Large forges usually require from 3 to 6 ounces pressure. The table "Air Pressures and Pipe Sizes for Forges,"
gives the diameters of discharge mains for various tuyere sizes and numbers of forges.
Air Pressures and Pipe Sizes for Forges
Diam.
Forge
Tuyere,
Inches |
Number of Forges Supplied by Blower |
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
| Diameter of Discharge Main at Blower, Inches |
| 3/4 |
1½ |
1½ |
2 |
2 |
2½ |
2½ |
3 |
3 |
3 |
3 |
| 1 |
1½ |
2 |
2½ |
3 |
3 |
3½ |
3½ |
4 |
4 |
4 |
| 1¼ |
2 |
2½ |
3 |
3½ |
4 |
4 |
4½ |
5 |
5 |
5 |
| 1½ |
2 |
2½ |
3 |
3½ |
4 |
4½ |
5 |
6 |
6 |
6 |
| 1¾ |
2½ |
3½ |
4 |
4½ |
5 |
6 |
6 |
7 |
7 |
7 |
| 2 |
3 |
4 |
4½ |
5 |
6 |
7 |
7 |
8 |
8 |
8 |
| 2¼ |
3 |
4 |
5 |
6 |
7 |
7 |
8 |
9 |
9 |
9 |
| 2½ |
3½ |
5 |
6 |
7 |
8 |
8 |
9 |
9 |
10 |
10 |
| 2¾ |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
10 |
11 |
11 |
| 3 |
4 |
6 |
7 |
8 |
9 |
10 |
11 |
11 |
12 |
12 |
| 3½ |
4½ |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
14 |
| 4 |
6 |
8 |
9 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
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American Blower Company
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MACHINERY'S HANDBOOK 5th Ed., Industrial Press, 1914 - Today's article is similar or the same.
Blowers sold by
Kayne and Son |
| CFM |
oz/sqin |
Outlet |
Amps |
| 65 |
14 |
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| 112 |
36 |
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| 164 |
40 |
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| 400 |
74 |
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| Buffalo Forge Catalog |
| Forge size |
Fan Dia.Inches |
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| 18" Dia. |
6" |
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| 25" Dia |
8 - 10" |
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| 21 x 27" |
10" |
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| 28 x 40 |
14" |
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| N/A |
17" |
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References and Links
2002 Jock Dempsey, www.anvilfire.com
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Forge blowers:
Air Pressures and Pipe Sizes for Forges
Blacksmiths' forges require air pressures varying from 1½ to 6 ounces per square inch. Small forges with the blower close to them are adequately supplied with 1½ ounce pressure. It the blower is some distance away and a long discharge pipe with many bends leads to the forge, even though the later be small, it may be necessary to carry 3 ounces pressure or more, to overcome friction in the air ducts. Large forges usually require from 3 to 6 ounces pressure. The table "Air Pressures and Pipe Sizes for Forges," gives the diameters of discharge mains for various tuyere sizes and numbers of forges.
Air Pressures and Pipe Sizes for Forges
Forge
Tuyere,
Inches
MACHINERY'S HANDBOOK 5th Ed., Industrial Press, 1914 - Today's article is similar or the same.
Kayne and Son
References and Links
2002 Jock Dempsey, www.anvilfire.com