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The Hooded Fountain Paint Brush: A Dome Shares the Paint Between Both Sides
Franklin E. Fornwalt, Harrisburg, Pennsylvania · Public domain (expired patent)
Martin

작성자

Martin

6. 10월 2026NO
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The Hooded Fountain Paint Brush: A Dome Shares the Paint Between Both Sides

Paint fed into the middle of a brush clogs its head, and one side of the bristles runs dry. Franklin E. Fornwalt of Harrisburg, Pennsylvania, received US 842,644, patented 29 January 1907, for a fountain brush "for applying paint": a tin holder clamped over the brush carries a reservoir whose floor has a row of apertures under a hollow turning valve, and below it a hood whose dome sends equal paint to both sides of the bristles. This rung works out the flow a brush needs, then folds the holder from aluminium sheet over a 120 mm brush and measures the paint it lays on each side of a stroke.
중급
About 5 hours

안내

1

Paint the brush needs

Jupyter 노트북 불러오는 중…
2

A turned perforated tube before it

The embedded blueprint turns a perforated tube to change how water leaves a brush. Fornwalt turns a perforated valve to open or close a row of holes over a hood.
3

Read US 842,644

"In virtue of the provision of the said hood D paint is effectually prevented from getting on the brush-head b, and at the same time liability of the brush becoming choked and impaired is reduced to a minimum. It will also be apparent that the hood D conveys an equal quantity of paint to each side of the body of bristles a and assures the paint reaching the sides of the body of bristles in the form of thin layers, which obviously contributes materially to the efficiency of the fountain-brush as a whole."
4

Fold the tank

Fold aluminium sheet into a box 160 × 60 × 70 mm with a lid. Rivet the seams and seal them inside with silicone. Cut a 25 mm filling hole in the lid.

이 단계의 재료:

알루미늄 판알루미늄 판1 개
블라인드 리벳블라인드 리벳1 개
실리콘 실런트실리콘 실런트1 개

필요한 도구:

판금 가위판금 가위
평집게평집게
바이스(만력)바이스(만력)
블라인드 리벳 건 키트블라인드 리벳 건 키트
무선 드릴무선 드릴
드릴 비트 세트드릴 비트 세트
홀소 세트홀소 세트
가죽 작업 장갑가죽 작업 장갑
5

Drill the floor

Drill six 3 mm holes along the floor's centre line, 20 mm apart.

필요한 도구:

무선 드릴무선 드릴
드릴 비트 세트드릴 비트 세트
유성 매직유성 매직
자자
6

Make the turning valve

Cut 200 mm of 10 mm copper tube. Drill six 3 mm holes in a line to match the floor's, and file a 6 mm slot along the opposite side. Pass it through both end walls just above the floor and bend one end into a crank.

이 단계의 재료:

동관동관1 개

필요한 도구:

쇠톱(핵소)쇠톱(핵소)
무선 드릴무선 드릴
드릴 비트 세트드릴 비트 세트
줄 (손줄)줄 (손줄)
바이스(만력)바이스(만력)
7

Fold the hood

Bend an aluminium strip into a ridge with 40° sides and rivet it under the floor, its peak under the holes.

이 단계의 재료:

알루미늄 판알루미늄 판1 개
블라인드 리벳블라인드 리벳1 개

필요한 도구:

바이스(만력)바이스(만력)
블라인드 리벳 건 키트블라인드 리벳 건 키트
8

Clamp on the brush

Rivet two side skirts below the tank. Drill them and a 120 mm brush's stock for two M6 bolts, and clamp the brush between the skirts with nuts so their lower edges rest on the bristles.

이 단계의 재료:

붓 세트붓 세트1 개
육각 볼트 모음육각 볼트 모음1 개
육각 너트육각 너트1 개
평와셔평와셔1 개
블라인드 리벳블라인드 리벳1 개

필요한 도구:

무선 드릴무선 드릴
드릴 비트 세트드릴 비트 세트
멍키스패너멍키스패너
9

The patent drawing

US 842,644 drawing sheet, public domain (expired patent).
단계 9 - Image 1
10

Paint and weigh

Fill the tank with thinned acrylic paint. Weigh a plywood board, open the valve half, and paint one 1 m stroke each way. Weigh it again; compare how wet each side of the bristles is.
단계 10 - Image 1

이 단계의 재료:

아크릴 물감 세트아크릴 물감 세트1 개
물물1 개
합판합판1 개

필요한 도구:

디지털 주방 저울디지털 주방 저울
줄자줄자
스톱워치스톱워치
11

A brush that clogs, floods or paints one side

Hooded fountain paint brush troubleshooting.

Flow

Loading...
12

History and honest limits

**Franklin E. Fornwalt** of Harrisburg, Pennsylvania, filed US 842,644 on 28 September 1906; it was patented 29 January 1907. His holder is preferably tin; bolts through the brush head with thumb nuts press the side walls in against the bristles, and removing them lets the brush be replaced. A connection may take a hose from a paint supply or compressed air. A right-angled form paints vertical surfaces, feeding the upper side of the bristles only. **Honest limits.** Riveted aluminium stands in for his tin, and plain nuts for his thumb nuts. Your weights are the result.

재료

11

필요 도구

16

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이 블루프린트는 CC0로 공개되었습니다. 어떤 목적으로든 자유롭게 복사, 수정, 배포 및 사용할 수 있습니다.

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