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Iron Axle and Cams for a Trip Hammer, Forged from Wrought Iron
A trip hammer is raised by a cam and drops under its own weight. The cams are lugs on a revolving shaft turned by the water wheel; each one lifts the helve once a turn. Forge a wrought-iron axle with a squared middle and three curved cams that slide on and are wedged tight.
The picture: our diagram, side and end view.
高级
Three days with a striker
说明
1
1
Weld up the axle
Weld up the axle
Bind wrought-iron bars into a faggot as long as the shaft, bring it to a welding heat, sprinkle with sand and weld it solid with a striker, a heat at a time along its length.
此步骤所需材料：
锻铁条25 公斤
熟铁圆棒1 m所需工具：
铁匠炉
木炭
细砂
大锤
铁匠锤
铁匠钳
铁砧
电焊手套
安全眼镜
皮革围裙2
2
Shape the axle
Shape the axle
Leave the middle square for the cams and draw both ends round for the journals. Flatter the square true and file the journals smooth.
所需工具：
铁匠炉
平锤垫铁大锤铁匠钳铁砧
金属锉电焊手套安全眼镜皮革围裙3
3
Forge the cams
Forge the cams
For each cam, forge a thick curved lug on a boss. Punch the boss and drift it square to slide over the axle's square.
此步骤所需材料：
锻铁条6 公斤所需工具：
铁匠炉
热冲子
扩孔冲子
铁砧剁刀大锤铁匠锤铁匠钳铁砧电焊手套安全眼镜皮革围裙4
4
Fit and wedge
Fit and wedge
Slide the three cams onto the square at equal turns round the shaft, each lined up with the helve's tail. Drive iron wedges beside each boss until tight.
此步骤所需材料：
熟铁圆棒0.5 m所需工具：
铁匠锤金属锉铁砧电焊手套安全眼镜皮革围裙5
5
Blows per minute
Blows per minute
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