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Rack-and-Pinion Rolling Beater Churn: Beaters That Turn One Way Up, the Other Way Down
Livingston wanted a deep, narrow churn in which every part of the cream is worked.
Norman B. Livingston of Portland, Indiana, received US 9,097, dated 6 July 1852, for a churn in which "a vertical rack (b) and groove (c) on each of two opposite sides of the box, receive pinions (d) on the two ends of a shaft (e) from which project wings or beaters (f)." A rod from a handle raises and lowers the shaft, and the beaters revolve "in one direction when going up and in the opposite direction when going down." He held a deep box made firmer, yellower butter than shallow vessels; that is his observation.
This rung works out the turn per stroke, then prints the wing hub, pinions and racks, fits them in a deep box, and makes butter.
中级
About 4 hours, plus printing
说明
1
1
Turn per stroke
Turn per stroke
正在加载 Jupyter 笔记本…
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2
A dasher that turns as it rises and falls before it
A dasher that turns as it rises and falls before it
The embedded blueprint turns an upright dasher with a pin in a spiral slot. Livingston turns a horizontal beater shaft with pinions on racks.
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3
Read US 9,097
Read US 9,097
"The motion of the handle up and down, causes the shaft (e) and beaters (f), to ascend and descend in the groove (c), and the pinions (d) working at the same time in the racks (b), the beaters are thereby caused to revolve in one direction when going up and in the opposite direction when going down, so that both the vertical and the rotary movements, are reversed at every stroke."
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4
Print the parts
Print the parts
Print the wing hub (/uploads/blueprints/rack-and-pinion-rolling-beater-churn-wing-hub.stl), two 14-tooth pinions (/uploads/blueprints/rack-and-pinion-rolling-beater-churn-pinion.stl) and two racks with their grooves (/uploads/blueprints/rack-and-pinion-rolling-beater-churn-rack-and-groove.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
The deep box
The deep box
Take a deep, narrow food-safe box about 130 × 120 × 260 mm. Glue a rack upright on each of two opposite inside walls, directly facing each other, teeth the same way.
此步骤所需材料:
食品级贮存容器1 个
双组分环氧胶1 个所需工具:
夹具
卷尺6
6
Shaft, rod and lever
Shaft, rod and lever
Pass a 10 mm square hardwood shaft through the hub and fix a pinion on each end so each meshes its rack, the shaft's ends riding in the grooves. Pivot a steel rod on the shaft's middle, and its top on a pine hand lever pivoted on a post at the box's end.
此步骤所需材料:
硬木销钉1 个
低碳钢圆棒1 个
松木板1 个
机螺钉1 个
六角螺母1 个
#8 × 1 英寸木螺钉1 个所需工具:
手锯
钢锯
充电式电钻
螺丝刀套装7
7
The patent drawing
The patent drawing
US 9,097 drawing sheet, public domain (expired patent).

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8
Work the lever and make butter
Work the lever and make butter
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. Work the lever up and down; the beaters roll one way and back. 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.
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
Pinions that skip, a shaft that tilts
Pinions that skip, a shaft that tilts
Rack-and-pinion beater troubleshooting.
Flow
Loading...
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10
History and honest limits
History and honest limits
**Norman B. Livingston** of Portland, Fountain County, Indiana, received US 9,097, dated 6 July 1852. He claimed the racks, grooves and pinions by which the shaft and beaters traverse the cream with a compound vertical revolving and reciprocating motion.
**Honest limits.** A food-safe box and printed gears 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
12- 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
- 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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