UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
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.
Ophakathi
About 5 hours, plus printing
Imiyalelo
1
1
Turns per stroke
Turns per stroke
Ilayisha incwadi ye-Jupyter…
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2
The rack and pinion it uses
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.
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3
Read US 18,759
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."
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4
Print the rack and pinion
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.
Izinto zokwakha zalesi sinyathelo:
Ifilamenti ye-PETG1 ucezuAmathuluzi adingekayo:
Iphrinta ye-3D yentambo (i-FDM)5
5
Print the pinion
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6
Print the rack
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7
Build the frame
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.
Izinto zokwakha zalesi sinyathelo:
Ibhulokhi Lokhuni Oluqinile1 ucezu
Isikulufo sokhuni #8 x 1"1 ucezuAmathuluzi adingekayo:
Isaha Se-Coping
Izinsimbi zokuhlikihla (ezesandla)
Ibhola Elingenantambo
Iqoqo Lamakhanda Ebhola
Isethi yezikulufudrayiva
Irula8
8
Make the spindle and floats
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.
Izinto zokwakha zalesi sinyathelo:
Ubhamu Oluyindilinga Lwensimbi Ethambile1 ucezu
Ucingo lwensimbi engagqwali1 ucezu
I-epoxy Yezingxenye Ezimbili1 ucezuAmathuluzi adingekayo:
Isaha Sensimbi
Udlawu Olunezihloko Eziyindilinga
Udlawu Lomlomo Oyisicaba
Izibuko Zokuphepha Ezicwathile9
9
Assemble
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.
Izinto zokwakha zalesi sinyathelo:
Iwasha Eliyisicaba1 ucezuAmathuluzi adingekayo:
Ibhola ElingenantamboIqoqo Lamakhanda Ebhola10
10
The patent drawing
The patent drawing
US 18,759 drawing sheet, public domain (expired patent).
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11
Beat egg whites
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.
Izinto zokwakha zalesi sinyathelo:
Iqanda2 izicucuAmathuluzi adingekayo:
Isitsha esikhulu sokuxuba sensimbi engagqwali
Iwashi Lokumisa Isikhathi12
12
A rack that jams, slips or a float that hits the bowl
A rack that jams, slips or a float that hits the bowl
Ratchet-bar egg beater troubleshooting.
Flow
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History and honest limits
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.
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Amafayela omklamo
2Le blueprint yenza
Ama-blueprint ahlobene
Lama-blueprint abelana ngolwazi — amasu, izinto noma izimiso
CC0 Isizinda Somphakathi
Le blueprint ikhishwe ngaphansi kwe-CC0. Ukhululekile ukukopisha, ukuguqula, ukusabalalisa, nokusebenzisa ngaphandle kwemvume.
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