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Ratchet-Bar Egg Beater: Push a Rack, the Floats Spin Both Ways
YourGrandma

Creado por

YourGrandma

6. octubre 2026IS
40
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Ratchet-Bar Egg Beater: Push a Rack, the Floats Spin Both Ways

Beating eggs in a closed beater keeps the air out, and a beater bolted to its vessel is slow to empty and clean. Harvey Miller of Cincinnati, Ohio, received US 18,759, dated 1 December 1857, for an egg beater: a frame whose standards clasp an open jar, a bar sliding through slots that gears into a pinion on a vertical spindle, and wire floats on the spindle that turn rapidly one way then the other as the bar is pushed to and fro; lifting the frame frees the jar. This rung works out the turns per stroke, then prints the rack and pinion, builds the frame and floats, and times a beating.
Intermedio
About 5 hours, plus printing

Instrucciones

1

Turns per stroke

Cargando el cuaderno de Jupyter…
2

The rack and pinion it uses

The embedded blueprint turns a straight push into rotation. Miller pushes the rack by hand and the pinion spins the floats.
3

Read US 18,759

"By this arrangement, if one hand be placed upon the upper bar B to hold the machine steady, while with the other hand upon the handle j, of the ratchet bar g, a reciprocating motion be given to the ratchet bar, then the spindle c, with its floats d, is set in rapid motion, alternately revolving in each direction."
4

Print the rack and pinion

Print the 12-tooth pinion and the 20-tooth rack. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls.

Materiales para este paso:

Filamento PETGFilamento PETG1 pieza

Herramientas necesarias:

Impresora 3D de filamento (FDM)Impresora 3D de filamento (FDM)
5

Print the pinion

The pinion, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
6

Print the rack

The rack, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
7

Build the frame

Cut two 170 mm standards and two cross-bars from hardwood. Screw them into a gate that straddles the jar, cut 13 × 11 mm slots across the standards' tops for the rack, and give the feet a curve to fit the jar.

Materiales para este paso:

Bloque de madera duraBloque de madera dura1 pieza
Tornillo para madera n.º 8 x 1"Tornillo para madera n.º 8 x 1"1 pieza

Herramientas necesarias:

Segueta (sierra de marquetería)Segueta (sierra de marquetería)
Limas (lima de mano)Limas (lima de mano)
Taladro inalámbricoTaladro inalámbrico
Juego de brocasJuego de brocas
Juego de destornilladoresJuego de destornilladores
ReglaRegla
8

Make the spindle and floats

Cut 160 mm of 5 mm steel rod. Bend three loops of stainless wire 45 mm across and 50 mm high, bind their ends to the rod's lower end, and epoxy them. Press the pinion onto the top.

Materiales para este paso:

Redondo de acero dulceRedondo de acero dulce1 pieza
Alambre de acero inoxidableAlambre de acero inoxidable1 pieza
Epoxi de dos componentesEpoxi de dos componentes1 pieza

Herramientas necesarias:

Sierra para metalesSierra para metales
Alicates de punta redondaAlicates de punta redonda
Alicates de boca planaAlicates de boca plana
Gafas de seguridad transparentesGafas de seguridad transparentes
9

Assemble

Hang the spindle from the lower cross-bar in a 5 mm hole, slide the rack through the slots so its teeth mesh with the pinion, and stand the gate over the bowl.

Materiales para este paso:

Arandela planaArandela plana1 pieza

Herramientas necesarias:

Taladro inalámbricoTaladro inalámbrico
Juego de brocasJuego de brocas
10

The patent drawing

US 18,759 drawing sheet, public domain (expired patent).
Paso 10 - Image 1
11

Beat egg whites

Separate two egg whites into the bowl. Pump the rack at about two strokes a second and time how long until they hold stiff peaks.
Paso 11 - Image 1

Materiales para este paso:

HuevoHuevo2 piezas

Herramientas necesarias:

Bol grande de acero inoxidableBol grande de acero inoxidable
CronómetroCronómetro
12

A rack that jams, slips or a float that hits the bowl

Ratchet-bar egg beater troubleshooting.

Flow

Loading...
13

History and honest limits

**Harvey Miller** of Cincinnati, Ohio, received US 18,759, dated 1 December 1857. His frame and parts were cast iron, the floats iron wire coated with tin, the jar porcelain or tin with no cover, so air has free access; neither shaft nor floats touch the vessel. He did not claim the ratchet bar or revolving beaters alone, only the frame with them in combination with the jar. **Honest limits.** FDM prints hold food in their layer lines, so wash well and replace when worn. Printed PETG gears and a hardwood gate stand in for cast iron. Your times are the result.

Materiales

8

Herramientas requeridas

13

Archivos de diseño

2

CC0 Dominio público

Este Blueprint se publica bajo CC0. Eres libre de copiar, modificar, distribuir y usar este trabajo para cualquier propósito, sin pedir permiso.

Apoya al Maker comprando productos a través de su Blueprint, donde gana una Comisión del Maker establecida por los vendedores, o crea una nueva iteración de este Blueprint e inclúyela como conexión en tu propio Blueprint para compartir ingresos.

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