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Piston-Pump Egg Beater: Pump the Eggs Through a Grate
A whisk stirs the eggs; it does not force them through anything.
J. J. Parker of Marietta, Ohio, received US 25,038, dated 9 August 1859, for an egg beater and churn combined: a tin tube with square openings at its lower end and a piston inside, worked up and down "in the manner of a pump" by a crank, which "draws the eggs in and out through the grate bars until they are completely torn in pieces or made perfectly fine and frothy"; a band turned round the tube's foot closes the openings to vary the agitation.
This rung works out the jet speed at each band setting, then prints the tube, band and piston, fits the crank, and times a beating at two settings.
Intermédiaire
About 3 hours, plus printing
Consignes
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Jet speed at each setting
Jet speed at each setting
Chargement du notebook Jupyter…
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The churning it also does
The churning it also does
The embedded blueprint churns cream to butter. Parker's pump-tube does the same when worked longer in cream.
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Read US 25,038
Read US 25,038
"At the lower end of the tube is a band of about one half an inch in width loosely fitted with openings one fourth of an inch square and corresponding exactly with the openings in the tube and of the same size, so that by turning the band around either way the openings are closed or made smaller at pleasure, so as to produce more or less agitation in the eggs or cream. This band has a bottom with grate like bars cut or made in it."
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Print the tube, band and piston
Print the tube, band and piston
Print the tube (/uploads/blueprints/piston-pump-egg-beater-tube.stl), the band with its grate (/uploads/blueprints/piston-pump-egg-beater-band.stl) and the piston disk (/uploads/blueprints/piston-pump-egg-beater-piston.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls.
Matériaux pour cette étape :
Filament PETG1 pièceOutils nécessaires :
Imprimante 3D à filament (FDM)5
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Pack the piston
Pack the piston
Cut a leather disk 2 mm larger than the piston. Clamp it between the printed disk and a washer on an M3 rod end with a nut, so its edge seals the tube.
Matériaux pour cette étape :
Cuir1 pièce
Rondelle plate1 pièce
Écrou hexagonal1 pièce
Vis à métaux1 pièceOutils nécessaires :
Cutter de précision
Clé à molette
Pied à coulisse numérique 6 pouces6
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Post and crank
Post and crank
Epoxy a 4 mm wire post up the tube's side, bent at its top into bearings 100 mm above the tube. Bend a crank shaft of 3 mm wire with a 22 mm crank one end and a handle the other, and link the crank to the rod with a wire pitman.
Matériaux pour cette étape :
Rond en acier doux1 pièce
Fil d'acier inoxydable1 pièce
Époxy à deux composants1 pièceOutils nécessaires :
Étau d'établi
Pince à becs ronds
Pince plate
Scie à métaux
Lunettes de sécurité transparentes7
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The patent drawing
The patent drawing
US 25,038 drawing sheet, public domain (expired patent).
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Beat at two settings
Beat at two settings
Stand the beater in a bowl with two eggs and a spoon of sugar. Crank twice a second with the band fully open and time to a fine froth; repeat with the band half closed.
Matériaux pour cette étape :
Œuf4 pièces
Sucre cristallisé1 pièceOutils nécessaires :
Grand cul-de-poule en acier inoxydable
Chronomètre9
9
A pump that leaks past, sticks or splashes
A pump that leaks past, sticks or splashes
Piston-pump egg beater troubleshooting.
Flow
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History and honest limits
History and honest limits
**J. J. Parker** of Marietta, Ohio, received US 25,038, dated 9 August 1859. His smaller machine's tube is one and a half inches across and one and five eighths deep; the crank shaft is No. 7 wire with a seven-eighths-inch crank; the piston is two oval pieces of thin metal with leather between, its edges forced out by pressing them together. It may also be worked by a handle on the rod instead of a crank.
**Honest limits.** FDM prints hold food in their layer lines, so wash well and replace when worn. Printed PETG stands in for tin. The notebook treats the flow as steady. Your times are the result.
Matériaux
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Outils requis
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