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Stepped Spiral Egg Beater: A Stepped Dasher Spun in a Square Box
A beater spun in a round bowl soon drags the whole mixture round with it.
Thomas McBean of Fowlerville, New York, received US 24,134, dated 24 May 1859, for an egg beater: "a double spiral-shaped beater or dasher with its surface formed into steps within a square box," turned horizontally on a vertical shaft by a bevel pinion and a handle, so that the dasher and the square box together "so thoroughly breaks up all portions of the eggs that they may be well and very thoroughly beaten in a few seconds."
This rung compares the side and corner gaps, then prints the stepped dasher, builds a square box with a bevel drive, and times beating in the box against a round bowl.
Intermediário
About 4 hours, plus printing
Instruções
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1
Tip speed and the corners
Tip speed and the corners
A carregar o notebook Jupyter…
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A geared beater a month before it
A geared beater a month before it
The embedded blueprint beats with two wire whisks turning opposite ways. McBean turns one stepped dasher and lets the box's corners do the breaking up.
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Read US 24,134
Read US 24,134
"The nature of my invention consists in arranging a double spiral-shaped beater or dasher with its surface formed into steps within a square box and in communicating to this dasher a swift rotary motion so as to revolve it horizontally within said box."
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Print the dasher
Print the dasher
Print the stepped double-spiral dasher (/uploads/blueprints/stepped-spiral-egg-beater-dasher.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls.
Materiais para este passo:
Filamento PETG1 peçaFerramentas necessárias:
Impressora 3D de filamento (FDM)5
5
Build the box
Build the box
Cut a plywood base and four sides to make a box 104 mm square inside and 90 mm deep. Glue and screw it, and seal the inside seams with silicone.
Materiais para este passo:
Placa de contraplacado1 peça
Parafuso para madeira n.º 8 x 1"1 peça
Vedante de silicone1 peçaFerramentas necessárias:
Serra de recortes
Berbequim sem fios
Jogo de brocas
Conjunto de chaves de fendas
Régua6
6
Fit the shaft and gears
Fit the shaft and gears
Screw a hardwood bar across the box's top with a bracket above it. Run a 5 mm rod down through the bar to a socket in the floor, with the dasher at its foot and one bevel gear at its top; mount the other gear on a crank shaft through the bracket so they mesh.
Materiais para este passo:
Bloco de madeira dura1 peça
Varão de aço macio1 peça
Conjunto de engrenagens cónicas (aço, 1:1)1 peça
Epóxi de dois componentes1 peça
Anilha plana1 peçaFerramentas necessárias:
Serra de arco para metaisBerbequim sem fiosJogo de brocas
Torno de bancada7
7
The patent drawing
The patent drawing
US 24,134 drawing sheet, public domain (expired patent).
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8
Square box against round bowl
Square box against round bowl
Beat two egg whites in the box at about two crank turns a second and time them to stiff peaks. Repeat with the dasher in a round bowl of the same size.
Materiais para este passo:
Ovo4 peçasFerramentas necessárias:
Taça grande de aço inoxidável
Cronómetro9
9
A dasher that swirls, scrapes or slips
A dasher that swirls, scrapes or slips
Stepped spiral egg beater troubleshooting.
Flow
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History and honest limits
History and honest limits
**Thomas McBean** of Fowlerville, Livingston County, New York, received US 24,134, dated 24 May 1859. The dasher's spiral circular plates are soldered to a small tube and bent into steps radial from the axis; the shaft passes up through the box's cover to a bracket, its lower end resting on a pin in the box's bottom. He claimed the double spiral dasher in combination with the square box.
**Honest limits.** FDM prints hold food in their layer lines, so wash well and replace when worn. A printed dasher and a bought 1:1 bevel pair stand in for his tin plates and pinions. Your times are the result.
Materiais
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Ferramentas necessárias
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