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Folding Slat-Box Dasher Churn: A Slatted Parallelogram That Folds to Squeeze the Cream
Edwin B. Clement, Barnet, Vermont · Public domain (expired patent)
Woody

Imeundwa na

Woody

7. Oktoba 2026NO
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Folding Slat-Box Dasher Churn: A Slatted Parallelogram That Folds to Squeeze the Cream

Clement came back three years after his V-bottom churn with a dasher that folds itself flat. Edwin B. Clement of Barnet, Caledonia County, Vermont, received US 12,377, dated 13 February 1855, for a dasher that "will surround the cream and force it through spaces between the slats of the dasher by closing or folding together." Four arms carry four shafts at their ends; two arms have square holes for the crank shaft and two round holes for a rod; connecting bars fixed to the shafts join them; slats close the bottom and sides, and two slatted doors held by buttons close the top. Worked forward and back by the crank, "it will open and fold the dasher, and describe the inside of the vessel," whose shape follows the dasher's sweep. This rung works out how much the box squeezes, then prints the arms, bars and bearings, builds the slatted dasher, and makes and washes butter.
Juu
About 6 hours, plus printing

Maagizo

1

How much it squeezes

Inapakia daftari la Jupyter…
2

His own earlier churn

The embedded blueprint is Clement's 1852 dasher, whose floats close into a V to drive the cream up. In 1855 he folds a whole slatted box.
3

Read US 12,377

"Put in the cream and steadily move the crank forward and back. After the butter becomes separated from the milk, put all the butter into the dasher, draw off the butter milk, and put in a sufficient quantity of pure cold water, and operate as in churning and the butter will be completely washed and ready for the salt."
4

Print the parts

Print two arms with square centre holes, two with round ones, four connecting bars, two bearing boxes and two journal sleeves for the crank shaft. Print the arms and bars flat. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Vifaa kwa hatua hii:

Uzi wa PETGUzi wa PETG1 kipande

Zana zinazohitajika:

Printa ya 3D ya nyuzi (FDM)Printa ya 3D ya nyuzi (FDM)
5

Print the arms with square centre holes

The arms with square centre holes, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
6

Print the arms with round centre holes

The arms with round centre holes, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
7

Print the bar

The bar, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
8

Print the bearing box

The bearing box, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
9

Print the journal sleeve

The journal sleeve, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
10

The folding box

Cut four 10 mm hardwood dowels 174 mm long as the shafts D. Put a square arm and a round arm at each end, the dowels' ends turning loosely in the arms' end holes, and glue a bar across each end of the top pair of dowels and of the bottom pair. Screw thin hardwood slats along the arms' outer edges and under the bottom bars, leaving gaps of about 5 mm, and make two slatted doors for the top, pinned to the top bars and held by turn buttons.

Vifaa kwa hatua hii:

Vijiti vya mbao ngumuVijiti vya mbao ngumu1 kipande
Gundi ya MbaoGundi ya Mbao1 kipande
Skrubu ya mti #8 x inchi 1Skrubu ya mti #8 x inchi 11 kipande

Zana zinazohitajika:

Msumeno wa mkonoMsumeno wa mkono
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Seti ya bisibisiSeti ya bisibisi
Sandarusi (karatasi ya kusugua)Sandarusi (karatasi ya kusugua)
11

Vessel, crank and rod

Use a rectangular food-grade container about 260 by 180 mm and 230 mm deep, so the dasher's corners clear it when folded. Screw a bearing box outside each end wall, 100 mm apart, at the arms' pivots. Glue the journal sleeves on the ends of a 10 mm square hardwood crank shaft through the square holes, with a strip of spring steel in each box's slot as his spring P; push a 6 mm stainless rod through the other box and the round holes, and fit a crank arm and handle.

Vifaa kwa hatua hii:

Chombo cha kuhifadhi cha daraja la chakulaChombo cha kuhifadhi cha daraja la chakula1 kipande
Ufito wa chuma lainiUfito wa chuma laini1 kipande
Utepe wa chuma cha springiUtepe wa chuma cha springi1 kipande
Ubao wa msonobariUbao wa msonobari1 kipande
Skrubu ya mti #8 x inchi 1Skrubu ya mti #8 x inchi 11 kipande
Kizibo cha SilikoniKizibo cha Silikoni1 kipande

Zana zinazohitajika:

Kekee cha BetriKekee cha Betri
Seti ya misumeno ya duaraSeti ya misumeno ya duara
Msumeno wa chumaMsumeno wa chuma
Seti ya bisibisiSeti ya bisibisi
12

The build in 3D

FreeCAD model of this build, not of the patent: the vessel cut open, the dasher's two pairs of arms on the crank shaft and the rod, leaning part-way, with the four shafts, connecting bars and slats of the folding box.
Faili ya UsanifuBLENDCC0 - Free
Pakua modeli
13

Fold, then wash in the box

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres and work the crank steadily forward and back; time until the butter comes. Open the doors, put the butter into the dasher, close them, draw off the buttermilk, pour in cold water and work it as before until the water runs clear; work in a pinch of salt and weigh the butter.
Hatua 13 - Image 1

Vifaa kwa hatua hii:

Malai nzitoMalai nzito2000 ml
Chumvi ya Bahari MbichiChumvi ya Bahari Mbichi1 kipande
MajiMaji1 kipande

Zana zinazohitajika:

Kipima joto chenye kijiti kinachobaki ndaniKipima joto chenye kijiti kinachobaki ndani
Saa ya kupima mudaSaa ya kupima muda
Mizani ya dijitali ya jikoniMizani ya dijitali ya jikoni
Bakuli kubwa la kuchanganyia la chuma cha puaBakuli kubwa la kuchanganyia la chuma cha pua
14

A box that jams

Folding slat-box dasher troubleshooting.

Flow

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15

History and honest limits

**Edwin B. Clement** of Barnet, Caledonia County, Vermont, received US 12,377, dated 13 February 1855; his earlier folding-float churn is US 8,671 of 1852. He bored the arms' holes "sufficiently large to receive the journals of the shafts ... and not swell and become tight when wet," and cut a thread on the rod to hold it. His vessel's ends are curved to the dasher's sweep. He claimed "the folding dasher operating as described." **Honest limits.** A rectangular container stands in for his shaped vessel, and our sizes are ours. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Vifaa

12

Zana Zinazohitajika

12

Faili za muundo

6

Mchoro huu unatengeneza

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Kishikilia nafasi

Chombo cha kusukia siagi

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

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