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Air Blow Gun: Press-Button Valve and Conical Air Shield
Harry Yates's air gun (US 2,604,361, 1952) for blowing chips off lathes and drills. A press-button valve is held shut by the line pressure itself; pressed, it lets air into a ribbed nozzle that splits it into a central jet and a cone of air from a ring slot, which keeps flying chips away from the worker's eyes. The rubber valve face comes out by unscrewing one cap.
The patent gives no materials (except the rubber face), threads or sizes; the machine tools named are ours. The picture: the patent's drawing.
高级
1 day
说明
1
1
Bore the body
Bore the body
Bore the body's vertical opening: stem bearing (13), wider air passage (14), wider chamber (15) threaded at the bottom (16), with a valve seat rib (17) undercut round its edge. Ours: lathe and boring bar, tap for the thread.
此步骤所需材料：
吹气枪枪体1 个所需工具：
金属车床
镗杆
丝锥板牙套装2
2
Bore the hose pocket so it breaks into the chamber
Bore the hose pocket so it breaks into the chamber
Bore and thread the hose pocket (19) so its edge cuts into the chamber, opening the port (20) and leaving a centre projection (21): an overhang that turns incoming air down into the chamber, away from the seat.
所需工具：
金属车床镗杆丝锥板牙套装3
3
Bore the barrel
Bore the barrel
Bore the front barrel (11) to a cylindrical pocket (22) joined to the air passage by a tapered passage (23). Bevel the barrel's front end (44).
所需工具：
金属车床镗杆4
4
Fit stem and press-button
Fit stem and press-button
Pass the valve stem (24) up through the body and press its stud (25) into the socket (27) of the press-button (28). The button slides in the bearing; the stem's flange (26) stops it coming out upward, the button head downward. Ours: arbor press.
此步骤所需材料：
阀杆1 个
阀门按钮1 个所需工具：
台式压力机5
5
Make the valve closure
Make the valve closure
Set the rubber valve face (36) in the recess (35) on top of the closure member (30) and press a flanged tubular eyelet (37) into its centre hole (38) to hold it.
此步骤所需材料：
阀门关闭件1 个
阀门橡胶密封面1 个
空心铆钉1 个所需工具：
台式压力机6
6
Close the chamber
Close the chamber
Slide the closure's stud (31) into the pocket (32) of the closure cap (33) and screw the cap into the chamber, a gasket (34) under its flange. The stem's pin (29) rests on the closure. Ours: flat screwdriver in the cap's slot.
此步骤所需材料：
封闭螺塞1 个
密封垫1 个所需工具：
一字螺丝刀7
7
Press in the nozzle
Press in the nozzle
Force the nozzle's ribs (41) into the barrel pocket (22) until its inner end stops on the tapered passage (23). That stop fixes the ring slot (45) between the nozzle's cone shoulder (42) and the barrel bevel (44).
此步骤所需材料：
空气喷嘴1 个所需工具：
台式压力机8
8
Screw on the tip and the hose nipple
Screw on the tip and the hose nipple
Screw the tip (49) into the nozzle's threaded pocket (48); its bore (50) is wider than the jet hole (47) so it does not touch the jet, and it can clamp an extension tube. Screw a hose nipple into the hose pocket (19).
此步骤所需材料：
喷嘴头1 个
软管螺纹接头1 个所需工具：
活动扳手9
9
Try the jet and the shield
Try the jet and the shield
Ours: connect an air hose from a compressor. The line pressure alone holds the valve shut. Press the button: a central jet leaves the jet hole, and a cone of air from the ring slot surrounds it.
所需工具：
空气压缩机
压缩空气软管材料
11- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
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