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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

Erstellt von

Emma

6. Oktober 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.
Fortgeschritten
About 3 hours

Anweisungen

1

Flow through the hose

Jupyter-Notebook wird geladen …
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.

Materialien für diesen Schritt:

PET-Flasche (Kohlensäuregetränk)PET-Flasche (Kohlensäuregetränk)1 Stück
ReifenventilReifenventil1 Stück
Klarer VinylschlauchKlarer Vinylschlauch1 Stück
ZweikomponentenepoxidZweikomponentenepoxid1 Stück

Benötigte Werkzeuge:

AkkubohrschrauberAkkubohrschrauber
BohrersatzBohrersatz
BastelmesserBastelmesser
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.

Materialien für diesen Schritt:

SilikonschlauchSilikonschlauch1 Stück
KabelbinderKabelbinder1 Stück

Benötigte Werkzeuge:

SchraubstockSchraubstock
AkkubohrschrauberAkkubohrschrauber
BohrersatzBohrersatz
PinselsetPinselset
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.

Materialien für diesen Schritt:

HartholzdübelHartholzdübel1 Stück
MaschinenschraubenMaschinenschrauben1 Stück
DruckfedernsortimentDruckfedernsortiment1 Stück

Benötigte Werkzeuge:

Bügelsäge (Metallsäge)Bügelsäge (Metallsäge)
AkkubohrschrauberAkkubohrschrauber
BohrersatzBohrersatz
Schraubendreher-SatzSchraubendreher-Satz
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.

Materialien für diesen Schritt:

Acrylfarben-SetAcrylfarben-Set1 Stück
WasserWasser1 Stück

Benötigte Werkzeuge:

FahrradpumpeFahrradpumpe
ManometerManometer
8

The patent drawing

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

Benötigte Werkzeuge:

MesszylinderMesszylinder
StoppuhrStoppuhr
ManometerManometer
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.

Materialien

11

Benötigte Werkzeuge

11

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CC0 Gemeinfrei

Dieser Blueprint ist unter CC0 veröffentlicht. Sie dürfen dieses Werk für jeden Zweck frei kopieren, ändern, verbreiten und verwenden, ohne um Erlaubnis zu fragen.

Unterstützen Sie den Maker, indem Sie Produkte über seinen Blueprint kaufen, wo er eine Maker-Provision von Anbietern festgelegt, verdient. Oder erstellen Sie eine neue Iteration dieses Blueprints und verbinden Sie ihn in Ihrem eigenen Blueprint, um Einnahmen zu teilen.

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