LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Double-Motion Dasher Churn: One Crank Spins One Dasher and Plunges the Other
Alexander Hall, Loydsville, Ohio · Public domain (expired patent)
Emma

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Emma

6. október 2026SE
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Double-Motion Dasher Churn: One Crank Spins One Dasher and Plunges the Other

Hall combined "a vertical reciprocating-dasher with a horizontal rotary-dasher so as to break and agitate the cream in two directions at once." Alexander Hall of Loydsville, Ohio, received US 6,777, dated 9 October 1849, for a churn with a vertical spindle carrying a rotary dasher at its foot, turned by a bevel pinion and wheel from a horizontal driving shaft on the lid; a crank on the inner end of that shaft works, through a rod, a reciprocating dasher on a tubular stem sliding on the spindle, so "the currents produced by either dasher are broken and distorted by the other." This rung works out the two motions, then prints a crown wheel and lantern, the two dashers, builds the drive on a box lid, and makes butter.
Lengra kominn
About 5 hours, plus printing

Leiðbeiningar

1

Two motions from one crank

Hleð Jupyter-vinnubók…
2

Rotary and vertical motion together before it

The embedded blueprint gives one dasher both motions through a spiral slot. Hall gives each motion its own dasher, from one crank.
3

Read US 6,777

"The cream or milk is placed in the tub and power being applied to the driving shaft (c) a rapid rotary motion is communicated through the wheels c d to the dasher b while at the same time the upper dasher h receives a vertical reciprocating motion through the crank k and rod i."
4

Print the parts

Print the crown wheel with its pegs and crank pin, the lantern pinion, the rotary dasher, the perforated reciprocating dasher with its sleeve and the crank arm. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Efni fyrir þetta skref:

PETG-þráðurPETG-þráður1 stykki

Nauðsynleg verkfæri:

FDM-þrívíddarprentariFDM-þrívíddarprentari
5

Print the crown wheel

The crown wheel, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
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6

Print the lantern

The lantern, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
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7

Print the rotary dasher

The rotary dasher, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
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8

Print the reciprocating dasher

The reciprocating dasher, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
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9

Print the crank arm

The crank arm, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
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10

Spindle and dashers

Glue the rotary dasher on the foot of a 10 mm square hardwood spindle and stand it in a seat drilled in the centre of a food-safe box's floor. Slide a 16 mm tube over the spindle as the stem, glue the reciprocating dasher's sleeve on its lower end, and glue the lantern on the spindle's top above the lid.

Efni fyrir þetta skref:

Geymslubox í matvælaflokkiGeymslubox í matvælaflokki1 stykki
HarðviðartapparHarðviðartappar1 stykki
PVC-rörPVC-rör1 stykki
TrélímTrélím1 stykki

Nauðsynleg verkfæri:

HleðsluborHleðslubor
BorasettBorasett
JárnsögJárnsög
11

Drive on the lid

Screw two pine standards to a plywood half-lid and pass a 10 mm square driving shaft through them, with the crown wheel on its inner end meshing the lantern and the crank arm on its outer end. Join the crown wheel's crank pin to the stem's top with a pine rod on screws.

Efni fyrir þetta skref:

KrossviðarplataKrossviðarplata1 stykki
FuruborðFuruborð1 stykki
HarðviðartapparHarðviðartappar1 stykki
VélskrúfurVélskrúfur1 stykki
SexkantróSexkantró1 stykki
Tréskrúfa #8 x 1"Tréskrúfa #8 x 1"1 stykki

Nauðsynleg verkfæri:

HandsögHandsög
HleðsluborHleðslubor
BorasettBorasett
SkrúfjárnasettSkrúfjárnasett
SkiptilykillSkiptilykill
12

The build in 3D

FreeCAD model of this build, not of the patent: the box cut away to show the rotary dasher at the spindle's foot and the perforated dasher on its sliding stem, and on the lid the crown wheel and lantern, the rod and the crank.
HönnunarskráBLENDCC0 - Free
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13

Crank and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. Crank steadily; time until the butter comes. 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.
Skref 13 - Image 1

Efni fyrir þetta skref:

RjómiRjómi2000 ml
Gróft sjávarsaltGróft sjávarsalt1 stykki
VatnVatn1 stykki

Nauðsynleg verkfæri:

Hitamælir með nema sem situr íHitamælir með nema sem situr í
SkeiðklukkaSkeiðklukka
Stafræn eldhúsvogStafræn eldhúsvog
Stór hrærskál úr ryðfríu stáliStór hrærskál úr ryðfríu stáli
14

Gears that skip, a stem that binds

Double-motion dasher churn troubleshooting.

Flow

Loading...
15

History and honest limits

**Alexander Hall** of Loydsville, Belmont County, Ohio, received US 6,777, dated 9 October 1849, signed 7 August 1849. The spindle could be stepped in the bottom with a bearing in the top, or hung from the top alone; and by putting the pinion on the tubular stem instead, the upper dasher could revolve and the lower reciprocate. He claimed "the combination of a reciprocating dasher with a revolving dasher." **Honest limits.** A pegged crown wheel and lantern pinion stand in for his bevel wheels; a food-safe box and printed dashers for his tub and dashers. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Efni

13

Nauðsynleg verkfæri

11

Hönnunarskrár

6

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Tengd Blueprint

Þessi blueprint deila þekkingu — tækni, efni eða meginreglur

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CC0 opinbert ríki

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