Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
English
Self-Folding Blade Dasher Churn: Six Blades to Churn, Reverse and They Fold to Two That Gather
Robert W. Davis let the cream set the dasher and the butter fold it.
Robert W. Davis of Rodgersville, Steuben County, New York, received US 10,566, dated 28 February 1854, for "Churns for Making and Working Butter": a dasher of two end pieces B carrying blades a, and divided end pieces C hung loosely on pins "set eccentric to the axis of the dasher," carrying blades b and scroll-curved blades c. Turned one way, the cream's resistance opens it "so as to present six centripetal cutting or agitating blades"; reversed after the butter comes, the butter's resistance closes it "so as to present but two centrifugal gathering blades," which gather the butter, work it into rolls and expel the buttermilk.
This rung works out the strokes and the turning moment, then prints the end pieces, sections and blades, builds the round-bottomed churn, and makes and works butter.
Hejuru
About 5 hours, plus printing
Amabwiriza
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1
Six blades or two
Six blades or two
Gupakira ikaye ya Jupyter…
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2
A dasher that changes when reversed, before it
A dasher that changes when reversed, before it
The embedded blueprint's floats fall back onto rollers when the crank is reversed. Davis's sections fold six blades into two S-shaped gatherers.
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3
Read US 10,566
Read US 10,566
"The blades, c, c, have a greater curvature given them in line of a scroll, than those, b, b, as seen in the drawing. This increased curvature commences from the termination of the curve of the blades, b, b, as seen in the drawing. This increased curvature prevents the dasher throwing the butter toward the center of the churn, while gathering and working it."
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4
Print the parts
Print the parts
Print two end pieces B, four sections C, four outer blades for a and b and two scroll blades c. Print the blades on their lug ends. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
Ibikoresho by'iyi ntambwe:
Fibere ya PETG1 igiceIbikoresho bikenewe:
Imashini icapa 3D ikoresha umugozi (FDM)5
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Print the end piece
Print the end piece
The end piece, printed as step 4 describes.
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6
Print the section
Print the section
The section, printed as step 4 describes.
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7
Print the outer blade
Print the outer blade
The outer blade, printed as step 4 describes.
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8
Print the scroll blade
Print the scroll blade
The scroll blade, printed as step 4 describes.
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9
The round-bottomed churn
The round-bottomed churn
Lay a round food-grade container about 180 mm across and 180 mm long on its side in a pine cradle and cut a lid opening in its top. Drill both ends on the axis for a 10 mm square hardwood shaft and fit a crank arm and dowel handle outside.
Ibikoresho by'iyi ntambwe:
Ikibindi cyo kubikamo cy'urwego rw'ibiribwa1 igice
Ikibaho cy'igiti cya pinusi1 igice
Udukoni tw'ibiti bikomeye1 igice
Uruganda rw'igiti #8 x 1"1 igice
Ikinyabutabire cy'Ibiti1 igiceIbikoresho bikenewe:
Umucumita w'Imigororwa
Icyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo Gucukura
Umucumita w'Intoki10
10
Assemble the folding dasher
Assemble the folding dasher
Slide the two end pieces onto the shaft inside the churn and screw an outer blade a across each pair of ends. On each side, hang a section on each end piece's pin hole with a 4 mm stainless pin, then screw an outer blade b across the sections' outer ends and a scroll blade c across their inner ends. Fit a short pin in each end piece as a stop so the sections open about square to B and fold back flat against it.
Ibikoresho by'iyi ntambwe:
Umurongo Uzengurutse w'Icyuma Cyoroshye1 igice
Ibitorezo by'imashini1 igiceIbikoresho bikenewe:
Umucumita w'Ibyuma
Ikusanyirizo ry'ibitoreziIcyuma Cyivumbura Kidafite Insinga11
11
The build in 3D
The build in 3D
FreeCAD model of this build, not of the patent: the round-bottomed churn cut open, the end pieces with blades a on the square shaft, and the sections swung open across them on their pins, as for churning.
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Churn one way, gather the other
Churn one way, gather the other
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres. Turn the crank the way that opens the sections and time until the butter comes. Draw off the buttermilk, then reverse the crank so the sections fold and the two S-blades gather and roll the butter. Pour off the buttermilk, add cold water, churn a little and pour off again until it runs clear; work in a pinch of salt and weigh the butter.
Ibikoresho by'iyi ntambwe:
Igice cy'ibinure cy'amata1500 ml
Umunyu w'inyanja munini1 igice
Amazi1 igiceIbikoresho bikenewe:
Igipima ubushyuhe gifite uruti rusigara mu kintu
Isaha yo Guhagarika
Iminzani ya Digitale yo mu Gikoni
Ibakure rinini ryo kuvanga ry'icyuma kitagira ingese13
13
Sections that will not swing
Sections that will not swing
Self-folding blade dasher troubleshooting.
Flow
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History and honest limits
History and honest limits
**Robert W. Davis** of Rodgersville, Steuben County, New York, received US 10,566, dated 28 February 1854. He divided the end pieces C diagonally "in the line of a cima reversa" so the blades' edges always meet them as they open and close; his Fig. 2 showed the open position in red lines, which do not survive in the black-and-white scan. He claimed dividing the end pieces C, eccentric to the dasher's axis, combined with the blades a, b, c, so the dasher adjusts itself by the resistance of the cream and then, reversed, of the butter.
**Honest limits.** A container, printed parts and stop pins stand in for his churn and diagonal joints; he gave no sizes, and our blade curves are read from his figures. The notebook's force is illustrative. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.
Ibikoresho
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Ibikoresho bikenewe
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Dosiye z'igishushanyo
5Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.