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Oscillating-Pump Churn: A Half-Round Vane Pump Lifts the Cream Over and Strains It Back Through a Partition
W. H. McClintock of Frankfort, Ohio, received US 24,223, dated 31 May 1859, for a churn that is a pump. A box is divided by a perforated partition into a cream chamber and a butter chamber. In the cream chamber a half-round pump has a vane swung back and forth by a lever: each stroke sucks cream up through a passage round the pump and flap valves into one side, and forces the other side's cream up through valves on top into a channel that runs into the butter chamber. The cream strains back through the partition and goes round again, chafed at every pass, until the butter is left in the butter chamber. Pumping water round the same way rinses the churn and washes the butter.
This rung builds it in a pine box with a printed pump.
Erfahren
About 1 day, plus printing
Anweisungen
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1
What one stroke moves
What one stroke moves
Jupyter-Notebook wird geladen …
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Cream thrown over a partition, before it
Cream thrown over a partition, before it
Patterson's fan threw cream over a partition to return under it. McClintock pumps it over and strains it back.
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Read US 24,223
Read US 24,223
"The cream first expelled flows into the chamber C, and by reason of the continued suction of the piston is caused to strain through the perforated partition D, and enter the cream or milk chamber again ready to be again similarly circulated, minus a greater portion of its fatty matter, said fatty matter remaining in the chamber C."
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4
Print the pump E
Print the pump E
The pump body: half-round chamber a, passage b round it with its inlet below, ports for valves c c'. Print it upside down on its flat top. PETG, 0.2 mm layers, 40 % infill, 4 walls; wash before first use.
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5
Print the vane f
Print the vane f
The piston vane with its half-round hub. PETG, 0.2 mm layers, 40 % infill, 4 walls; wash before first use.
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Box A and partition D
Box A and partition D
From 18 mm pine make a box 500 x 220 mm and 300 mm deep inside, with a lid and knob. Screw pairs of 10 mm strips down both side walls 300 mm from the left end as grooves, and slide in a 12 mm plywood partition D 212 mm high, drilled all over with 8 mm holes 20 mm apart, with a knob to lift it. Fit a PVC spigot low in the right end, in chamber C, as the opening j.
Materialien für diesen Schritt:
Kiefernbrett3 Stück
Holzleim1 Stück
Holzschrauben40 Stück
Hartholzbrett1 Stück
Sperrholzplatte1 Stück
Hartholzdübel1 Stück
PVC-Auslaufhahn1 Stück
Silikondichtmasse1 StückBenötigte Werkzeuge:
Handsäge
Stichsäge
Akkubohrschrauber
Bohrersatz
Lochsägen-Set
Schraubzwingen
Schleifpapier
Schraubendreher-Satz
Bandmaß (Rollmeter)7
7
Pump E and top plate
Pump E and top plate
Cut a 12 mm plywood top plate 290 x 220 mm to fill chamber B from the left end to the partition. Cut a half-round groove across its underside for the vane's hub, 37 mm wide, centred 150 mm from the left end, and drill two 20 mm eduction holes d d' 50 mm each side of it. Glue rubber-sheet flaps e e' 32 mm square over them on top, hinged on one edge with a screw. Glue rubber flaps c c' over the two ports inside the pump's chamber, hinged at the top so they open inward. Screw the pump body under the plate, seal the joint with silicone, and rest the plate on cleats 200 mm above the floor so it closes chamber B.
Materialien für diesen Schritt:
PETG-Filament1 StückSperrholzplatte1 Stück
Gummiplatte1 StückSilikondichtmasse1 StückHolzschrauben12 StückKiefernbrett1 StückBenötigte Werkzeuge:
FDM-3D-DruckerStichsägeLochsägen-Set
CuttermesserAkkubohrschrauberSchraubendreher-Satz8
8
Vane f, lever g and channel F
Vane f, lever g and channel F
Fix the vane on a 12 mm stainless rod with an M4 screw across, set it in the chamber with the hub in the plate's groove, and pass the rod out through the pump's end and the box's near wall. Fix a hardwood lever g 24 x 12 mm, 245 mm long, on the rod outside, standing up past the lid, with a 28 mm dowel handle on top. Fix a pine board above the top plate, sloping down from 258 mm high at the left end to 238 mm over the partition, to form channel F into C.
Materialien für diesen Schritt:
Edelstahlstab1 Stück
Maschinenschrauben1 Stück
Sicherungsmutter mit Kunststoffeinsatz1 StückHartholzbrett1 StückHartholzdübel1 StückHolzleim1 StückKiefernbrett1 StückHolzschrauben8 StückBenötigte Werkzeuge:
Bügelsäge (Metallsäge)HandsägeAkkubohrschrauberBohrersatzSchraubendreher-Satz9
9
The build in 3D
The build in 3D
FreeCAD model of this build, the near half cut away: box A with partition D in its grooves, the pump body with passage b and its inlet, the vane, the top plate with flaps e e', flaps c c' at the ports, channel F's board and the spigot. It was checked at five vane angles from -60 to +60 degrees.
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10
Churn
Churn
Pour about 8 litres of heavy cream at about 15 °C into chamber B through C (it strains through the partition), checked with the thermometer, and put the lid on. Swing the lever steadily back and forth about 60 degrees each way and time it: cream spurts into channel F, runs into C and strains back. When the butter has gathered in C, draw off the buttermilk at the spigot, pour cold water in and pump it round to rinse the churn and wash the butter, then lift the butter out, work in a pinch of salt and weigh it.
Materialien für diesen Schritt:
Schlagsahne8 l
Wasser1 Stück
Grobes Meersalz1 StückBenötigte Werkzeuge:
Einsteck-Fühlerthermometer
Stoppuhr
Digitale Küchenwaage
Große Rührschüssel aus Edelstahl11
11
Troubleshooting
Troubleshooting
Pump churn troubleshooting.
Flow
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History and honest limits
History and honest limits
**W. H. McClintock** of Frankfort, Ross County, Ohio, US 24,223, 31 May 1859, "Churn". He claimed the circularly vibrating suction and force pump with a churn having a perforated partition. He gave no sizes or materials: the box, the printed pump, the rubber flaps and every size are ours.
Materialien
16- 3 StückPlatzhalter
- 2 StückPlatzhalter
- 60 StückPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
- 2 StückPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
- Platzhalter
- 8 lPlatzhalter
- 1 StückPlatzhalter
- 1 StückPlatzhalter
Benötigte Werkzeuge
16- Platzhalter
- 1 vendor sell this, none ship to you yetPlatzhalter
- 1 vendor sell this, none ship to you yetPlatzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- 1 vendor sell this, none ship to you yetPlatzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- Platzhalter
- Platzhalter
Designdateien
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