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Pendulum Swing Dash Churn: Rock the Hanging Tank, the Dasher Works Itself
Richardson made the swing of the churn drive the dasher.
Ithiel S. Richardson of Boston, Massachusetts, received US 8,146, dated 10 June 1851, for what he called the "Oscillating Perpendicular Dash-Churn": a tank hung in a swing between standards four feet long, joined at the top and spread three and a half feet at the bottom; a connecting rod from the swing rocks a bent lever on a rock shaft that works the dash stick up and down. The dash stick is hollow over a staff on a perforated false bottom, with a valved plug to let air in, so no vacuum slows the dasher; afterward the false bottom lifts out as a strainer, "bringing with it the butter."
This rung works out the swing's pace, then prints the dasher, false bottom and valve plug, builds the frame and swing, and makes butter.
高级
About 6 hours, plus printing
说明
1
1
The swing's pace
The swing's pace
正在加载 Jupyter 笔记本…
2
2
A swinging churn that works its dashers before it
A swinging churn that works its dashers before it
The embedded blueprint swings a platform whose toothed pieces work two dashers. Richardson hangs the tank in a pendulum frame and works one dasher through a bent lever.
3
3
Read US 8,146
Read US 8,146
"The hand holding the rod L communicates a backward and forward motion to the swing, which motion the swing communicates from one of its upright parts, through the connecting rod K to the arm J of the bent lever G H J, which bent lever, from its arm G, gives the motion to the dash stick F."
4
4
Print the parts
Print the parts
Print the perforated dasher with its socket (/uploads/blueprints/pendulum-swing-dash-churn-dasher.stl), the perforated false bottom with its staff socket (/uploads/blueprints/pendulum-swing-dash-churn-false-bottom.stl) and the valve plug (/uploads/blueprints/pendulum-swing-dash-churn-valve-plug.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
此步骤所需材料：
PETG线材1 个所需工具：
FDM 3D 打印机5
5
Frame and swing
Frame and swing
Build two A-frames of pine about 800 mm tall and join their tops with a 12 mm steel rod. Hang a swing from it: two pine uprights and a plywood board at their feet. Stand a straight-sided food-grade container on the board as the tank, strapped to the uprights.
此步骤所需材料：
松木板1 个
低碳钢圆棒1 个
胶合板1 个
食品级贮存容器1 个
#8 × 1 英寸木螺钉1 个
皮条1 个所需工具：
手锯
充电式电钻
钻头套装
螺丝刀套装
夹具6
6
Dasher, lever and rod
Dasher, lever and rod
Bore a length of 18 mm food-grade tube as the hollow dash stick and fit the valve plug through its side near the top, with a small leather flap inside so air enters but cannot leave that way. Glue the dasher on its foot. Set the false bottom in the tank with a 12 mm dowel staff rising inside the dash stick, and hold it with a wedge. Pivot a pine bent lever on a rock shaft across the frame's top, couple its long arm to the dash stick and its short arm by a pine rod to one swing upright.
此步骤所需材料：
PVC 管1 个皮条1 个
硬木销钉1 个松木板1 个
机螺钉1 个
六角螺母1 个
双组分环氧胶1 个所需工具：
钢锯充电式电钻钻头套装螺丝刀套装
活动扳手7
7
The patent drawing
The patent drawing
US 8,146 drawing sheet, public domain (expired patent).
8
8
Swing and make butter
Swing and make butter
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres and put on the lid. Swing the tank steadily to and fro at its own pace; the dasher rises and falls. Time until the butter comes. Lift the false bottom out by its staff, bringing the butter with it, and let the buttermilk drain back. Rinse and salt the butter in a bowl, and weigh it.
此步骤所需材料：
鲜奶油2000 毫升
粗海盐1 个
水1 个所需工具：
留置式探针温度计
秒表
数字厨房秤
大号不锈钢搅拌盆9
9
A dasher that sticks, a swing that won't keep going
A dasher that sticks, a swing that won't keep going
Pendulum swing dash churn troubleshooting.
Flow
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10
10
History and honest limits
History and honest limits
**Ithiel S. Richardson** of Boston, Suffolk County, Massachusetts, received US 8,146, dated 10 June 1851 (the drawing sheet's lettering reads "J. S."; the specification gives Ithiel). His standards were 2½ by 1½ inches square and four feet long; the swing's board was 12 by 16 inches; the stroke could be shortened by moving the couplings. He claimed the combination of the rock shaft, levers, connecting rod and swing for producing the perpendicular movement of the dasher.
**Honest limits.** A smaller frame, a food-grade container and printed parts 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.
材料
15- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 2 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 2000 毫升占位符
- 1 个占位符
- 1 个占位符
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