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The Pressure-Fed Fountain Paint Brush: Air Pushes the Paint, a Finger Stops It
Gottfried Meyer and Charles G. Braun, Philadelphia, Pennsylvania · Public domain (expired patent)
Emma

Yaremwe na

Emma

6. Ukwakira 2026SE
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The Pressure-Fed Fountain Paint Brush: Air Pushes the Paint, a Finger Stops It

Painting from a pot means stopping every few strokes to reload the brush. Gottfried Meyer and Charles G. Braun of Philadelphia received US 821,879, patented 29 May 1906, for a fountain paint brush: a reservoir pressurised through an air pipe with a check valve sends paint along a hose to a tube in a recess of the brush head and out through a flattened flexible web among the bristles; a spring holds a plunger open, and the forefinger pushes its knob to cut the paint off. This rung works out how paint thickness and pressure set the flow, then builds the tank from a bottle and a tyre valve, feeds a brush, and measures the flow.
Hagati
About 3 hours

Amabwiriza

1

Flow through the hose

Gupakira ikaye ya Jupyter…
2

A one-way valve before it

The embedded blueprint lets flow pass one way only. Meyer and Braun put one on the air pipe so the pumped air stays in the paint tank.
3

Read US 821,879

"The knob 35 is disposed in convenient position for the fore or index finger of the hand which holds the brush, and the valve or plunger 33 can thus be easily maintained in its closed or inward position and the supply of paint cut off when not required." "The air-pressure causes the paint to flow to the brush no matter in what position the latter may be held and the flow is under complete control of the operator, as above noted."
4

Fit the cap

Drill a 1.5 L PET bottle's cap for a tyre valve and for vinyl tubing. Seat the valve, and push the tubing through until it touches the bottom. Seal both with epoxy.

Ibikoresho by'iyi ntambwe:

Icupa rya PET (ikinyobwa gifite gazi)Icupa rya PET (ikinyobwa gifite gazi)1 igice
Vale y'ipineVale y'ipine1 igice
Umuyoboro wa vinili uboneranaUmuyoboro wa vinili ubonerana1 igice
Epoksi y'Ibice BibiriEpoksi y'Ibice Bibiri1 igice

Ibikoresho bikenewe:

Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Icyuma cy'UbukorikoriIcyuma cy'Ubukorikori
5

Feed the brush

Drill a 6 mm hole down through the stock of a 70 mm brush from the set, beside the handle. Push silicone tubing through it into the bristles and flatten its last 30 mm with a cable tie.

Ibikoresho by'iyi ntambwe:

Umuyoboro wa SilikoneUmuyoboro wa Silikone1 igice
Udukandara tw'insingaUdukandara tw'insinga1 igice

Ibikoresho bikenewe:

Ifatiro ry'AmezaIfatiro ry'Ameza
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ibikoresho by'uburosoIbikoresho by'uburoso
6

Make the finger valve

Screw a hardwood block to the handle over the tubing. Fit an M5 screw through it with a spring under the head, so the screw rests off the tube and a press of the forefinger pinches it shut.

Ibikoresho by'iyi ntambwe:

Udukoni tw'ibiti bikomeyeUdukoni tw'ibiti bikomeye1 igice
Ibitorezo by'imashiniIbitorezo by'imashini1 igice
Ikusanyirizo ry'Imizingo IkandamizwaIkusanyirizo ry'Imizingo Ikandamizwa1 igice

Ibikoresho bikenewe:

Umucumita w'IbyumaUmucumita w'Ibyuma
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
7

Join and pressurise

Join the bottle's tubing to the brush's with a 1.5 m length. Half fill the bottle with acrylic paint thinned with water, cap it, and pump to 0.2 bar on the gauge.

Ibikoresho by'iyi ntambwe:

Ibikoresho by'amarangi ya akirilikiIbikoresho by'amarangi ya akiriliki1 igice
AmaziAmazi1 igice

Ibikoresho bikenewe:

Ipompo y'igareIpompo y'igare
Igipima UmuvudukoIgipima Umuvuduko
8

The patent drawing

US 821,879 drawing sheet, public domain (expired patent).
Intambwe 8 - Image 1
9

Measure the flow

Hold the brush over the measuring cylinder for 30 s and read the paint. Repeat at 0.4 bar, with the brush upside down, and with the button pressed.
Intambwe 9 - Image 1

Ibikoresho bikenewe:

Igikoresho gipima ibitembaIgikoresho gipima ibitemba
Isaha yo GuhagarikaIsaha yo Guhagarika
Igipima UmuvudukoIgipima Umuvuduko
10

A brush that floods, starves or will not stop

Pressure-fed fountain paint brush troubleshooting.

Flow

Loading...
11

History and honest limits

**Gottfried Meyer** and **Charles G. Braun** of Philadelphia filed US 821,879 on 22 November 1905; it was patented 29 May 1906. Their reservoir has a valve casing with a detachable plug valve; a pipe reaches the bottom with lateral apertures; a sheet-metal band closes the recess in the brush head; all parts detach for cleaning when the colour is changed. **Honest limits.** A pinch on silicone tubing stands in for their plunger in a tube, and a PET bottle at low pressure for their reservoir. The notebook treats paint as a simple liquid. Your flows are the result.

Ibikoresho

11

Ibikoresho bikenewe

11

Blueprint zijyanye

Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame

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na YourGrandmaIS

Mekanike

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The Long-Handled Fountain Brush: A Ring of Holes Wets the Bristles From the Ground

The Long-Handled Fountain Brush: A Ring of Holes Wets the Bristles From the Ground

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CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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