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Air Blow Gun: Press-Button Valve and Conical Air Shield

Harry A. Yates, Bridgeport, Conn. · Public domain (expired patent)

أنشأه

Martin

23. أكتوبر 2026

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.

متقدم

1 day

التعليمات

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.

المواد لهذه الخطوة:

جسم مسدس النفخ1 قطعة

الأدوات المطلوبة:

مخرطة معادن

قضيب التجويف

طقم أدوات قطع اللولب

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.

الأدوات المطلوبة:

مخرطة معادن

قضيب التجويف

طقم أدوات قطع اللولب

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).

الأدوات المطلوبة:

مخرطة معادن

قضيب التجويف

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.

المواد لهذه الخطوة:

ساق الصمام1 قطعة

زر ضغط الصمام1 قطعة

الأدوات المطلوبة:

مكبس عمودي

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.

المواد لهذه الخطوة:

عضو إغلاق الصمام1 قطعة

وجه مطاطي للصمام1 قطعة

عروة برشام1 قطعة

الأدوات المطلوبة:

مكبس عمودي

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.

المواد لهذه الخطوة:

سدادة إغلاق1 قطعة

حشية مانعة للتسرب1 قطعة

الأدوات المطلوبة:

مفكّ مسطّح

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).

المواد لهذه الخطوة:

فوهة هواء1 قطعة

الأدوات المطلوبة:

مكبس عمودي

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).

المواد لهذه الخطوة:

طرف الفوهة1 قطعة

حلمة خرطوم ملولبة1 قطعة

الأدوات المطلوبة:

مفتاح إنجليزي

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.

الأدوات المطلوبة: