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Spring-Wire Twin Dash Churn: Two Hinged Dashes Rocked by a Sprung Wire on a Crank
YourGrandma

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YourGrandma

6. Ukwakira 2026IS
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Spring-Wire Twin Dash Churn: Two Hinged Dashes Rocked by a Sprung Wire on a Crank

Dugdale made the link between crank and dashes a spring. Samuel G. Dugdale of Richmond, Indiana, received US 8,219, dated 15 July 1851, for a churn: a water-tight box 16 inches long, nine wide and twelve deep, with two perforated dashes seven by six inches hung by hooks on staples three inches above the bottom at each end. A shaft with a three-inch crank turns in grooves in the box's edges, held down by the lid; an elastic wire bent round the crank, closed into an eye, has its ends hooked into staples on the dashes, "in such a manner that it will accommodate itself to the opening and closing of the same." This rung works out the dashes' swing, then prints the two dashes and shaft bearings, bends the spring wire, and makes butter.
Utangiye
About 2 hours, plus printing

Amabwiriza

1

The dashes' swing

Gupakira ikaye ya Jupyter…
2

Two dashers worked from one motion before it

The embedded blueprint links two dashers with levers. Dugdale links his two hinged dashes to one crank with a single sprung wire.
3

Read US 8,219

"It will be noticed, also, that when the handle is raised perpendicular, the crank to which the wire is attached will be parallel to it, and the ends of the wire attached to the dashers, will be extended, and as the handle is turned from you the springs act upon the dashers tending to force them down, thereby facilitating the operation."
4

Print the parts

Print two perforated dashes with their hooks and staple and two shaft bearings. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Ibikoresho by'iyi ntambwe:

Fibere ya PETGFibere ya PETG1 igice

Ibikoresho bikenewe:

Imashini icapa 3D ikoresha umugozi (FDM)Imashini icapa 3D ikoresha umugozi (FDM)
5

Print the dash

The dash, printed as step 4 describes.
Dosiye y'IgishushanyoSTLCC0 - Free
6

Print the shaft bearing

The shaft bearing, printed as step 4 describes.
Dosiye y'IgishushanyoSTLCC0 - Free
7

Box and staples

Take a food-safe box about 240 × 135 × 180 mm, about three fifths of his. Screw a stainless screw-eye into each end 30 mm above the bottom as the staples, and hang a dash on each by its hooks, holes toward the middle. Screw the bearings to the box's long edges at the middle.

Ibikoresho by'iyi ntambwe:

Ikibindi cyo kubikamo cy'urwego rw'ibiribwaIkibindi cyo kubikamo cy'urwego rw'ibiribwa1 igice
Uruganda rw'igiti #8 x 1"Uruganda rw'igiti #8 x 1"1 igice

Ibikoresho bikenewe:

Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
8

Crank and spring wire

Bend a 6 mm steel rod into a shaft with a 45 mm crank in the middle and a handle at one end, and lay it in the bearings. Bend spring-steel wire once round the crank pin into an eye and hook its two ends into the dashes' staples, so the wire is a little stretched with the crank up.

Ibikoresho by'iyi ntambwe:

Umurongo Uzengurutse w'Icyuma CyoroshyeUmurongo Uzengurutse w'Icyuma Cyoroshye1 igice
Insinga y'icyuma cya kamaniInsinga y'icyuma cya kamani1 igice

Ibikoresho bikenewe:

Isupana ihindurwaIsupana ihindurwa
Umucumita w'IbyumaUmucumita w'Ibyuma
9

The build in 3D

FreeCAD model of this build, not of the patent: the box with one side off to show the two perforated dashes hooked to the ends, the spring wire from the crank to their inner ends, and the shaft.
Dosiye y'IgishushanyoBLENDCC0 - Free
10

Crank and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres, enough to cover the dashes. Fit the lid over the shaft and turn the handle 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.
Intambwe 10 - Image 1

Ibikoresho by'iyi ntambwe:

Igice cy'ibinure cy'amataIgice cy'ibinure cy'amata2000 ml
Umunyu w'inyanja muniniUmunyu w'inyanja munini1 igice
AmaziAmazi1 igice

Ibikoresho bikenewe:

Igipima ubushyuhe gifite uruti rusigara mu kintuIgipima ubushyuhe gifite uruti rusigara mu kintu
Isaha yo GuhagarikaIsaha yo Guhagarika
Iminzani ya Digitale yo mu GikoniIminzani ya Digitale yo mu Gikoni
Ibakure rinini ryo kuvanga ry'icyuma kitagira ingeseIbakure rinini ryo kuvanga ry'icyuma kitagira ingese
11

Dashes that jump off, a wire that kinks

Spring-wire twin dash troubleshooting.

Flow

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12

History and honest limits

**Samuel G. Dugdale** of Richmond, Wayne County, Indiana, received US 8,219, dated 15 July 1851. His dashes were half an inch thick with holes leaving 2½ inches plain at the hung ends; collars kept the shaft from slipping; it could be turned by a handle or a pinion on a driving wheel. He claimed "the application of the spring wire ... which connects the crank with the dashers." **Honest limits.** A food-safe box at about three-fifths scale and printed dashes 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.

Ibikoresho

8

Ibikoresho bikenewe

10

Dosiye z'igishushanyo

3

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.

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