فنون

الجمال والعناية

حِرَف

الثقافة والتاريخ

ترفيه

البيئة

الطعام والمشروبات

الهندسة العكسية

العلوم

رياضة

التقنية

الأجهزة القابلة للارتداء

The Hooded Fountain Paint Brush: A Dome Shares the Paint Between Both Sides

Franklin E. Fornwalt, Harrisburg, Pennsylvania · Public domain (expired patent)

أنشأه

Martin

6. أكتوبر 2026

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.

متوسط

About 5 hours

التعليمات

Paint the brush needs

جارٍ تحميل دفتر Jupyter…

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.

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."

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.

المواد لهذه الخطوة:

صفيحة ألمنيوم1 قطعة

برشام سحب1 قطعة

مادة إحكام سيليكونية1 قطعة

الأدوات المطلوبة:

مقصّ صفائح

كماشة مسطّحة الفكّين

ملزمة منضدة

طقم مسدّس برشام

مثقاب لاسلكي

طقم لقم ثقب

طقم مناشير تفريغ

قفّازات عمل جلدية

Drill the floor

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

الأدوات المطلوبة:

مثقاب لاسلكي

طقم لقم ثقب

قلم تعليم ثابت

مسطرة

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.

المواد لهذه الخطوة:

أنبوب نحاسي1 قطعة

الأدوات المطلوبة:

منشار حديد

مثقاب لاسلكي

طقم لقم ثقب

مبارد (مبرد يدوي)

ملزمة منضدة

Fold the hood

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

المواد لهذه الخطوة:

صفيحة ألمنيوم1 قطعة

برشام سحب1 قطعة

الأدوات المطلوبة:

ملزمة منضدة

طقم مسدّس برشام

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.

المواد لهذه الخطوة:

طقم فرش رسم1 قطعة

تشكيلة براغي سداسية1 قطعة

صامولة سداسية1 قطعة

حلقة تثبيت مسطحة1 قطعة

برشام سحب1 قطعة

الأدوات المطلوبة:

مثقاب لاسلكي

طقم لقم ثقب

مفتاح ربط قابل للضبط

The patent drawing

US 842,644 drawing sheet, public domain (expired patent).

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.

المواد لهذه الخطوة:

طقم ألوان أكريليك1 قطعة

ماء1 قطعة

لوح خشب رقائقي1 قطعة

الأدوات المطلوبة:

ميزان مطبخ رقمي

شريط قياس

ساعة إيقاف

A brush that clogs, floods or paints one side

Hooded fountain paint brush troubleshooting.

Flow

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.