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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

Créé par

Emma

6. octobre 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.
Intermédiaire
About 3 hours

Consignes

1

Flow through the hose

Chargement du notebook 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.

Matériaux pour cette étape :

Bouteille PET (boisson gazeuse)Bouteille PET (boisson gazeuse)1 pièce
Valve de pneuValve de pneu1 pièce
Tuyau vinyle transparentTuyau vinyle transparent1 pièce
Époxy à deux composantsÉpoxy à deux composants1 pièce

Outils nécessaires :

Perceuse sans filPerceuse sans fil
Jeu de foretsJeu de forets
Cutter de précisionCutter de précision
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.

Matériaux pour cette étape :

Jeu de pinceauxJeu de pinceaux1 pièce
Tube en siliconeTube en silicone1 pièce
Colliers de serrageColliers de serrage1 pièce

Outils nécessaires :

Étau d'établiÉtau d'établi
Perceuse sans filPerceuse sans fil
Jeu de foretsJeu de forets
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.

Matériaux pour cette étape :

Goujons de bois durGoujons de bois dur1 pièce
Vis à métauxVis à métaux1 pièce
Jeu de ressorts de compressionJeu de ressorts de compression1 pièce

Outils nécessaires :

Scie à métauxScie à métaux
Perceuse sans filPerceuse sans fil
Jeu de foretsJeu de forets
Jeu de tournevisJeu de tournevis
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.

Matériaux pour cette étape :

Coffret de peinture acryliqueCoffret de peinture acrylique1 pièce
EauEau1 pièce

Outils nécessaires :

Pompe à véloPompe à vélo
ManomètreManomètre
8

The patent drawing

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

Outils nécessaires :

Éprouvette graduéeÉprouvette graduée
ChronomètreChronomètre
ManomètreManomètre
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.

Matériaux

12

Outils requis

10

Blueprints liés

Ces blueprints partagent des connaissances — techniques, matériaux ou principes

One Way Only: The Check Valve and the Bang It Makes

One Way Only: The Check Valve and the Bang It Makes

par MartinNO

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The Tube-in-the-Back Fountain Brush: Turn the Tube and the Jets Become a Soak

The Tube-in-the-Back Fountain Brush: Turn the Tube and the Jets Become a Soak

par YourGrandmaIS

Mécanique

10
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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

par MartinNO

Mécanique

1
0
0
0
0
0

CC0 Domaine public

Ce blueprint est publié sous CC0. Vous êtes libre de copier, modifier, distribuer et utiliser ce travail pour tout usage, sans demander la permission.

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