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Valveless Cone Air Dasher: A Hollow Cone and Four Tubes, Nothing to Wear Out
Josiah A. Gridley, Southampton, Massachusetts · Public domain (expired patent)
YourGrandma

Erstellt von

YourGrandma

6. Oktober 2026IS
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Valveless Cone Air Dasher: A Hollow Cone and Four Tubes, Nothing to Wear Out

Gridley wanted to force air under the cream "without the employment of valves or other movable parts in the dasher, which are liable to get out of order," and without a hollow handle. Josiah A. Gridley of Southampton, Massachusetts, received US 6,411, dated 1 May 1849, for a churn-dasher of a straight round stick with a hollow cone on its lower end. Near the apex are four holes, more or less, through the cone; from them small tubes run down the outside to near its base, ending in open ends above the base. Forced into the cream, the cone traps air, which is drawn out through the tubes and disperses through the cream. This rung works out the air the cone holds, then prints the cone with its tubes in one piece, fits it to a stick, and makes butter in a jar.
Anfänger
About 1 hour, plus printing

Anweisungen

1

Air in the cone

Jupyter-Notebook wird geladen …
2

A hollow dash that carries air down before it

The embedded blueprint traps air in a hollow cylinder and squeezes it out over a fixed block. Gridley's cone needs no block, spindle or valve.
3

Read US 6,411

"When this dasher is forced into the cream it incloses and compresses a quantity of air; and as the cream rushes up into it the air is drawn out through the tubes (a partial vacuum being created at their openings above the cone) and disperses through the cream, and agitates it as other air dashers. It is obvious that other figures than a cone would answer, and would be substantially the same thing."
4

Print the cone

Print the cone base-down in one piece: a hollow cone 90 mm across with four tubes from holes near its apex down the outside to just above its base, and a socket for the stick. Blow through each tube to check it is clear. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Materialien für diesen Schritt:

PETG-FilamentPETG-Filament1 Stück

Benötigte Werkzeuge:

FDM-3D-DruckerFDM-3D-Drucker
5

Print the cone

The cone, printed as step 4 describes.
DesigndateiSTLCC0 - Free
Modell herunterladen
6

Fit the stick

Glue a 12 mm hardwood dowel, as long as the jar is deep plus 150 mm, into the cone's socket.

Materialien für diesen Schritt:

HartholzdübelHartholzdübel1 Stück
HolzleimHolzleim1 Stück

Benötigte Werkzeuge:

HandsägeHandsäge
SchleifpapierSchleifpapier
7

The churn

Take a tall wide jar about 170 mm across and drill its lid at the centre for the stick.

Materialien für diesen Schritt:

EinmachglasEinmachglas1 Stück

Benötigte Werkzeuge:

AkkubohrschrauberAkkubohrschrauber
BohrersatzBohrersatz
8

The build in 3D

FreeCAD model of this build, not of the patent: the jar cut away to show the hollow cone on its stick with the four tubes from near its apex to just above its base.
DesigndateiBLENDCC0 - Free
Modell herunterladen
9

Dash and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1 litre. Work the stick up and down like a common dasher, lifting the cone clear of the cream each time so it fills with air; watch for bubbles from the tubes. 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.
Schritt 9 - Image 1

Materialien für diesen Schritt:

SchlagsahneSchlagsahne1000 ml
Grobes MeersalzGrobes Meersalz1 Stück
WasserWasser1 Stück

Benötigte Werkzeuge:

Einsteck-FühlerthermometerEinsteck-Fühlerthermometer
StoppuhrStoppuhr
Digitale KüchenwaageDigitale Küchenwaage
Große Rührschüssel aus EdelstahlGroße Rührschüssel aus Edelstahl
10

No bubbles, blocked tubes

Valveless cone air dasher troubleshooting.

Flow

Loading...
11

History and honest limits

**Josiah A. Gridley** of Southampton, Hampshire County, Massachusetts, received US 6,411, dated 1 May 1849. His cone was "of metal or other suitable material" and his handle "a straight round stick." He claimed the dasher made concave, with openings around it for dispersing air through the cream, without valves. **Honest limits.** A printed cone stands in for his metal one, and a jar for his churn. The notebook's figures are estimates. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Materialien

7

Benötigte Werkzeuge

9

Designdateien

2

Dieser Bauplan stellt her

Thumbnail
Platzhalter

Butterfass

Free

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CC0 Gemeinfrei

Dieser Blueprint ist unter CC0 veröffentlicht. Sie dürfen dieses Werk für jeden Zweck frei kopieren, ändern, verbreiten und verwenden, ohne um Erlaubnis zu fragen.

Unterstützen Sie den Maker, indem Sie Produkte über seinen Blueprint kaufen, wo er eine Maker-Provision von Anbietern festgelegt, verdient. Oder erstellen Sie eine neue Iteration dieses Blueprints und verbinden Sie ihn in Ihrem eigenen Blueprint, um Einnahmen zu teilen.

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