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Air Compressor: Twin Pump-Cylinder, Water-Cooled (Shop Notes, 1912)
A simple compressor that fills a tank to about 50 lb: two bought cast-iron well-pump cylinders, 2 1/2 in bore, driven alternately by a rocking arm from a crank, with check valves in and out and a water jacket pipe to cool them.
Source: Popular Mechanics Shop Notes for 1912, pp. 1708-1709. Unknown: tank, pipe sizes. Picture: Figs. 1-2 of the book.
中级
Unknown
说明
1
1
Pipe the two cylinders
Pipe the two cylinders
Take two ordinary cast-iron open-well pump cylinders, 2 1/2 in bore, bought complete with guide rods and plungers. Join their open ends with tees to a cross pipe C, and fit a packing box from an old valve (A, B) into each tee so the plunger rods D and E pass through (Fig. 1).
此步骤所需材料：
未知金属2 pump cylinders with plungers
钢管（厚壁、螺纹端）1 pipe C
螺纹管件2 tees
未知密封填料2 packing boxes所需工具：
管钳2
2
Fit the valves
Fit the valves
On the outer end of each cylinder fit an inlet check valve (H, I) and an outlet valve (J, K), the outlets joined to pipe L running to the tank.
此步骤所需材料：
止回阀4 H, I, J, K钢管（厚壁、螺纹端）1 pipe L螺纹管件1 个
未知材料1 air tank所需工具：
管钳3
3
Water-cool it
Water-cool it
Run cooling water through pipe C, set by valve M in and valve N out, so there is no pressure on the water to push it into the air chambers O and P.
此步骤所需材料：
截止阀2 M and N所需工具：
水管钳4
4
Fit the crank drive
Fit the crank drive
Drive it from a shaft (Fig. 2): crank S works an arm pivoted at its centre T, and the plunger rods D and E attach to the arm's ends U and V.
此步骤所需材料：
未知金属1 crank, arm
六角头螺栓 - 8.8 级1 pivot and rod pins, number not given所需工具：
手摇钻
活动扳手材料
8- 1 crank, arm占位符
- 1 pipe L占位符
- 1 个占位符
- 2 packing boxes占位符
- 4 H, I, J, K占位符
- 1 air tank占位符
- 2 M and N占位符
- 1 pivot and rod pins, number not given占位符
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