IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Twin-Plunger Air-Chamber Churn: Two Plungers Throw the Cream Through a Middle Chamber
Andrews made the cream do the travelling, back and forth through a middle chamber.
John Andrews of Middlesex County, Massachusetts, received US 7,298, dated 23 April 1850, for a churn box divided by two vertical partitions into three apartments, with a series of holes "at or near its bottom" in each partition, "unprovided with valves." Each outer chamber has a plunger on a rod jointed to a brake, "one of the said plungers being elevated while the other is being depressed," so the cream is thrown "back and forth in several streams through the air chamber." Holes near the partitions' tops let air in under each rising plunger.
This rung works out the streams, then prints the partitions and plungers, builds the box and brake, and makes butter.
Àárín
About 5 hours, plus printing
Ìlànà
1
1
The streams
The streams
Ń ṣí ìwé Jupyter…
2
2
Two dashers worked oppositely by one lever before it
Two dashers worked oppositely by one lever before it
The embedded blueprint works two dashers in one churn from a lever. Andrews puts each plunger in its own chamber so the cream must flow between them.
3
3
Read US 7,298
Read US 7,298
"Through each of the partitions a, b, and near the upper part thereof, I make one or more holes d, d, d, &c., as seen in Figs. 2 and 3, they being so arranged that the plunger F or F', during its upward stroke, shall pass partially or wholly above them, and in order to allow air to rush through said hole or holes and into the space directly under the plunger. The descent of the plunger forces such air into and through the cream."
4
4
Print the parts
Print the parts
Print two partitions (/uploads/blueprints/twin-plunger-air-chamber-churn-partition.stl) with their foot holes and air holes, two plungers (/uploads/blueprints/twin-plunger-air-chamber-churn-plunger.stl) and the brake hub (/uploads/blueprints/twin-plunger-air-chamber-churn-brake-hub.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Okùn PETG1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ 3D oníwàyà (FDM)5
5
The box
The box
Take a food-safe box about 230 × 120 × 160 mm. Glue the two partitions across it in silicone, dividing it into three equal chambers.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àgọ́ ìtọ́jú ti ìpele oúnjẹ1 ẹyọ
Ìdílẹ̀ Silikoni1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Àwọn clamp
Okùn Ìdíwọ̀n6
6
Plungers and brake
Plungers and brake
Glue a 12 mm hardwood dowel rod in each plunger. Screw two pine standards to the box's middle, pass a dowel through them as the rocker shaft, and fix a pine brake across it with the hub. Join each rod to an end of the brake on a loose screw, so one plunger rises as the other falls.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àwọn dowel igi líle1 ẹyọ
Pákó igi pine1 ẹyọ
Skurú ẹ̀rọ1 ẹyọ
Nọ́ọ̀tì Onígun Mẹ́fà1 ẹyọ
Ìdìpọ̀ Igi1 ẹyọ
Ìsúrù igi #8 x 1"1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ayùn Ọwọ́
Ẹ̀rọ Ìlùkòkò Aláìlókùn
Àkójọ Orí Ìlùkòkò
Ìṣù àwọn ohun ìyí skurú7
7
The patent drawing
The patent drawing
US 7,298 drawing sheet, public domain (expired patent).
8
8
Rock the brake and make butter
Rock the brake and make butter
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres, below the top holes. Rock the brake steadily up and down; 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.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀rá wàrà tó nípọn1500 ml
Iyọ̀ Òkun Rúkèrúdò1 ẹyọ
Omi1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìwọ̀n ooru oníhun tí ó dúró sí inú
Aago Ìdúró
Òṣùwọ̀n Díjítà Ilé Ìdáná
Àwo ìdàpọ̀ ńlá ti irin tí kò ń yá9
9
Plungers that stick, cream over the top
Plungers that stick, cream over the top
Twin-plunger air-chamber churn troubleshooting.
Flow
Loading...
10
10
History and honest limits
History and honest limits
**John Andrews** of Middlesex County, Massachusetts, received US 7,298, dated 23 April 1850. He wrote that the streams "so intermingle air with the lacteal matter as to very quickly oxygenate and cause a separation"; that is his account. He claimed the combination of the external chambers, their plungers and passages with the middle or air chamber, and the air-entering passages d.
**Honest limits.** A food-safe box and printed parts stand in for his wooden box and plungers. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.
Àwọn ohun-èlò
12- 1 ẹyọÀyè
- Àyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1500 mlÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
Àwọn irinṣẹ́ tó nílò
11- Àyè
- 1 vendor sell this, none ship to you yetÀyè
- Àyè
- 1 vendor sell this, none ship to you yetÀyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
Double-Dasher Lever Churn: Swing One Lever, One Dasher Rises as the Other Falls
láti ọwọ́ Woody
Iṣẹ́ Igi
24
0
0
0
0
0
Interraking Plunger Churn: Two Rakes Worked Oppositely by a Double Crank
láti ọwọ́ Martin
OÚNJẸ ÀTI OHUN MÍMU
8
0
0
0
0
0
Air-Pump Annular Dasher Churn: A Pump in the Middle, a Ring Dasher Round It
láti ọwọ́ Martin
OÚNJẸ ÀTI OHUN MÍMU
21
0
0
0
0
0
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.