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Self-Turning Roller Churn: Fluted Rollers Spun by a Fixed Wheel as the Dasher Turns
Colver's improvement consisted "in giving the beaters of a churn dasher a revolving motion on their own axis."
Lewis W. Colver of St. Louis, Missouri, received US 6,726, dated 18 September 1849, for a rotary churn-dasher of four horizontal beaters between a cross at one end and a round flat case at the other. Two are wedge beaters; the other two are fluted rollers with hook-shaped flutes, each between two edge-beaters whose inner faces curve in toward it. A belt from a large stationary pulley inside the case turns the rollers fast as the dasher goes round; "the granules of butter are drawn by the hooked flutes into the converging spaces between the rolls and the edge beaters, thus compressing them together."
This rung works out the rollers' speed, then prints the fixed gear, rollers, beaters and end pieces, builds the dasher in a box, and makes butter.
高级
About 6 hours, plus printing
说明
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1
How fast the rollers spin
How fast the rollers spin
正在加载 Jupyter 笔记本…
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Wheels carried round a fixed wheel
Wheels carried round a fixed wheel
The embedded blueprint explains gears carried round a central gear. Colver's rollers are such planets: the central wheel stands still and the dasher carries them round it.
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Read US 6,726
Read US 6,726
"The central pulley is held stationary and the dasher is revolved around it, and as the central pulley is much larger than the others the velocity of the rollers are proportionately increased." And: "I have hitherto described the fluted rollers as driven by a belt, that being most convenient in practice, but it is evident that cogwheels may be employed for the same purpose."
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Print the parts
Print the parts
Print the fixed gear (/uploads/blueprints/self-turning-roller-churn-fixed-gear.stl), two fluted rollers with their pinions (/uploads/blueprints/self-turning-roller-churn-fluted-roller.stl), two pairs of edge-beaters (/uploads/blueprints/self-turning-roller-churn-edge-beaters.stl), two wedge beaters (/uploads/blueprints/self-turning-roller-churn-wedge-beater.stl), the cross (/uploads/blueprints/self-turning-roller-churn-cross.stl), the case plate (/uploads/blueprints/self-turning-roller-churn-case-plate.stl) and the crank arm (/uploads/blueprints/self-turning-roller-churn-crank-arm.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
Build the dasher
Build the dasher
Bolt the beaters between the cross and the case plate with M3 screws: wedge beaters on two opposite arms, edge-beater pairs on the other two. Drop a fluted roller between each pair, its gudgeons in the cross and the case plate, its pinion beyond the plate. Screw a short 10 mm square hardwood stub into the cross's centre for the crank.
此步骤所需材料：
机螺钉1 个
六角螺母1 个
硬木销钉1 个所需工具：
螺丝刀套装
活动扳手
手锯6
6
Fix the gear and fit the box
Fix the gear and fit the box
Take a food-safe box about 230 × 190 × 190 mm. Screw the fixed gear to the inside of one end on the dasher's axis, with a 10 mm steel pin through its centre into the case plate's hole, so the dasher turns round it and its teeth mesh the rollers' pinions. Drill the other end for the crank stub and glue the crank arm and handle on.
此步骤所需材料：
食品级贮存容器1 个
低碳钢圆棒1 个
#8 × 1 英寸木螺钉1 个
木工胶1 个所需工具：
充电式电钻
钻头套装
钢锯螺丝刀套装7
7
The build in 3D
The build in 3D
FreeCAD model of this build, not of the patent: the box with one side off to show the dasher of wedge beaters and fluted rollers between edge-beaters, the fixed gear meshing the rollers' pinions at the case end, and the crank.
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Crank and make butter
Crank and make butter
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres. Crank steadily; the rollers spin on their own as the dasher turns. 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1500 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
Rollers that do not spin, gears that jam
Rollers that do not spin, gears that jam
Self-turning roller churn troubleshooting.
Flow
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History and honest limits
History and honest limits
**Lewis W. Colver** of St. Louis, Missouri, received US 6,726, dated 18 September 1849, signed 9 July 1849. The dasher was held by a sliding bolt and wedge so it could be withdrawn; the gudgeons and the round case were packed so the cream could not get into it; a fourth pulley kept the belt's sides from rubbing. He claimed making the beaters of revolving churn dashers to turn upon their own axes.
**Honest limits.** Printed gears stand in for his belt and pulleys, as he allowed; our gears are open to the cream, where his were inside a packed case. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.
材料
11- 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
- 1500 毫升占位符
- 1 个占位符
- 1 个占位符
所需工具
11- 占位符
- 占位符
- 占位符
- 占位符
- 1 vendor sell this, none ship to you yet占位符
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