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Closed-Globe Egg Beater: Concentric Rings in a Shut Sphere
Beaten in an open bowl, egg spatters and the air is not forced into it.
James M. Jay of Canton, Ohio, received US 27,054, dated 7 February 1860, for an egg beater whose case is a hollow globe of two halves hinged and caught together; a horizontal shaft through it carries concentric rings, the outer one close to the inside so it sweeps the bottom, turned by a wheel and gear on a stand. "The air which occupies the upper part ... is so closely confined that it can not escape during the operation of beating the eggs, consequently it is carried down and mixed thoroughly with the eggs."
This rung works out the air-to-egg ratio, then prints the ring dasher and gears, closes it in two bowls, and times a beating.
Intermediário
About 5 hours, plus printing
Instruções
1
1
Air shut in with the eggs
Air shut in with the eggs
A carregar o notebook Jupyter…
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2
A dasher in a closed box before it
A dasher in a closed box before it
The embedded blueprint spins a dasher in a square box. Jay shuts the eggs in a globe so the air is driven into them.
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3
Read US 27,054
Read US 27,054
"In my egg beater the air which occupies the upper part of the hollow bottom B, together with that which fills the cover or cap C, is so closely confined that it can not escape during the operation of beating the eggs, consequently it is carried down and mixed thoroughly with the eggs by the rings or dashes H', while the eggs are carried up and through the air in the cap or case C, so that a perfect mixture of the air and eggs is effected."
4
4
Print the rings and gears
Print the rings and gears
Print the concentric-ring dasher (/uploads/blueprints/closed-globe-egg-beater-rings.stl), the 36-tooth wheel (/uploads/blueprints/closed-globe-egg-beater-wheel-36.stl) and the 12-tooth gear (/uploads/blueprints/closed-globe-egg-beater-gear-12.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
Make the globe
Make the globe
Take two matching bowls 120 mm across from the set. Drill both rims at opposite points for the shaft, 5.5 mm, so the shaft lies on the joint.
Materiais para este passo:
Conjunto de taças para misturar1 peçaFerramentas necessárias:
Berbequim sem fios
Jogo de brocas
Paquímetro digital de 6 polegadas6
6
Shaft, rings and stand
Shaft, rings and stand
Pass a 5 mm rod through one bowl's holes and the dasher's hub, and epoxy the hub at the centre. Epoxy the 12-tooth gear on the rod outside. Mount the 36-tooth wheel with a crank on an M5 screw on a hardwood upright so it meshes, and stand the lower bowl in a plywood ring.
Materiais para este passo:
Varão de aço macio1 peça
Epóxi de dois componentes1 peça
Bloco de madeira dura1 peça
Placa de contraplacado1 peça
Parafusos de máquina1 peça
Anilha plana1 peça
Porca sextavada1 peça
Parafuso para madeira n.º 8 x 1"1 peçaFerramentas necessárias:
Serra de arco para metais
Serra de recortesBerbequim sem fiosJogo de brocas
Chave inglesa ajustável
Conjunto de chaves de fendas7
7
The patent drawing
The patent drawing
US 27,054 drawing sheet, public domain (expired patent).
8
8
Closed against open
Closed against open
Beat two egg whites with the top bowl clamped on and time them to stiff peaks; then again with the top off. Compare the times and the volume of foam.
Materiais para este passo:
Ovo4 peçasFerramentas necessárias:
Cronómetro
Balança digital de cozinha9
9
A globe that leaks, rings that scrape
A globe that leaks, rings that scrape
Closed-globe egg beater troubleshooting.
Flow
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10
History and honest limits
History and honest limits
**James M. Jay** of Canton, Ohio, assignor to himself and John Danner, received US 27,054, dated 7 February 1860. The halves are turned to break joints and fit tight; a hook on the cover hangs on a pivot between lugs, and a swinging catch holds the cover down; the shaft's bearings are in the lower half's edge, the cover cut to fit over them. He wrote that it does not matter whether one or more eggs are beaten.
**Honest limits.** FDM prints hold food in their layer lines, so wash well and replace when worn. Two bought bowls stand in for his turned halves, without a hinge. Your times are the result.
Materiais
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Ferramentas necessárias
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