LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Twin-Cylinder Tube-Link Churn: Two Churns Pumped Into Each Other Through a Tube
Karen

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Karen

6. október 2026SE
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Twin-Cylinder Tube-Link Churn: Two Churns Pumped Into Each Other Through a Tube

Fisher knew double dasher churns already existed, so he claimed only what joined his two. Daniel Fisher of College Corner, Ohio, received US 7,870, dated 1 January 1851, for "connecting two vertical churns by a horizontal tube at their bottoms ... (said tube being about ten inches long, and about one fifth of the capacity of one of the vertical cylinders) in combination with the perforated cutters E E." A lever on an upright between the cylinders works perforated plungers on two rods; the cream is "alternately forced through the openings in the segmental slides E and those in the pistons." This rung checks the tube's proportion, then prints the tube, slides and plungers, joins two pots, and makes butter.
Miðlungs
About 4 hours, plus printing

Leiðbeiningar

1

The tube's proportion

Hleð Jupyter-vinnubók…
2

Two plungers driving cream between chambers before it

The embedded blueprint drives cream through a middle chamber. Fisher's two churns are joined by a tube that fills with air.
3

Read US 7,870

"The perforated cutters answer the double purpose of cutting the cream in its passage to and fro and only allowing sufficient cream to enter through the perforations at each stroke of the dashers to keep the tube half full or thereabout, thereby creating a partial vacuum in the tube, which becomes filled with air."
4

Print the parts

Print the link tube with its flanges, two perforated segmental slides and two perforated plungers. 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 link tube

The link tube, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
6

Print the segmental slide

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

Print the plunger

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

Join the pots

Take two straight-sided food-safe containers about 110 mm across. Drill each low in its side for the tube, push the tube's ends through and seal the flanges with silicone. Glue two thin plywood strips inside each pot either side of the opening as grooves, and slide a perforated slide down them over the tube's mouth. Stand both on a pine plank.

Efni fyrir þetta skref:

Geymslubox í matvælaflokkiGeymslubox í matvælaflokki2 stykki
SílikonþéttiefniSílikonþéttiefni1 stykki
KrossviðarplataKrossviðarplata1 stykki
FuruborðFuruborð1 stykki

Nauðsynleg verkfæri:

GatasagarsettGatasagarsett
HleðsluborHleðslubor
LaufsögLaufsög
9

Lever and plungers

Screw a pine upright to the plank between the pots, rising above them, and pivot a pine lever on its top. Glue a 12 mm dowel rod in each plunger and join each to the lever on a loose screw, equally either side of the pivot.

Efni fyrir þetta skref:

FuruborðFuruborð1 stykki
HarðviðartapparHarðviðartappar1 stykki
VélskrúfurVélskrúfur1 stykki
SexkantróSexkantró1 stykki
TrélímTrélím1 stykki
Tréskrúfa #8 x 1"Tréskrúfa #8 x 1"1 stykki

Nauðsynleg verkfæri:

HandsögHandsög
HleðsluborHleðslubor
BorasettBorasett
SkrúfjárnasettSkrúfjárnasett
10

The patent drawing

US 7,870 drawing sheet, public domain (expired patent).
Skref 10 - Image 1
11

Pump and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour 1 litre into each pot. Work the lever up and down like a pump handle; 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.

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
12

Leaks at the tube, a lever that sticks

Twin-cylinder tube-link troubleshooting.

Flow

Loading...
13

History and honest limits

**Daniel Fisher** of College Corner, Butler County, Ohio, received US 7,870, dated 1 January 1851. His cylinders stood on a horizontal plank with movable covers tied together at top; he explained the butter by "the oxygen of the atmosphere"; that is his account. **Honest limits.** Our tube is far smaller than his one fifth, as the notebook shows; printed parts and food-safe pots stand in for his. 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

3

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