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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.
中级
About 5 hours
说明
1
1
Paint the brush needs
Paint the brush needs
正在加载 Jupyter 笔记本…
2
2
A turned perforated tube before it
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.
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3
Read US 842,644
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
4
Fold the tank
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.
此步骤所需材料：
铝板1 个
抽芯铆钉1 个
硅酮密封胶1 个所需工具：
铁皮剪
平口钳
台虎钳
抽芯铆钉枪套件
充电式电钻
钻头套装
开孔器套装
皮革工作手套5
5
Drill the floor
Drill the floor
Drill six 3 mm holes along the floor's centre line, 20 mm apart.
所需工具：
充电式电钻钻头套装
油性记号笔
直尺6
6
Make the turning valve
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.
此步骤所需材料：
铜管1 个所需工具：
钢锯充电式电钻钻头套装
锉刀（手用锉）台虎钳7
7
Fold the hood
Fold the hood
Bend an aluminium strip into a ridge with 40° sides and rivet it under the floor, its peak under the holes.
此步骤所需材料：
铝板1 个抽芯铆钉1 个所需工具：
台虎钳抽芯铆钉枪套件8
8
Clamp on the brush
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.
此步骤所需材料：
画笔套装1 个
六角螺栓组合1 个
六角螺母1 个
平垫圈1 个抽芯铆钉1 个所需工具：
充电式电钻钻头套装
活动扳手9
9
The patent drawing
The patent drawing
US 842,644 drawing sheet, public domain (expired patent).
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10
Paint and weigh
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.
此步骤所需材料：
丙烯颜料套装1 个
水1 个
胶合板1 个所需工具：
数字厨房秤
卷尺
秒表11
11
A brush that clogs, floods or paints one side
A brush that clogs, floods or paints one side
Hooded fountain paint brush troubleshooting.
Flow
Loading...
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12
History and honest limits
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.
材料
11- 1 个占位符
- 3 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
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