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Cord-Wound Staff Churn Drive: A Swinging Lever Twists the Dash To and Fro by Cords
Lucius Leavenworth of Trumansburg, New York, received US 14,458, dated 18 March 1856, for "Machinery for Operating Churns": cords from a pulley, worked by a swinging lever, wind and unwind on the dash staff and turn it to and fro.
This rung prints the pulley, lever head, frame and dash, builds the drive on a churn and makes butter.
Intermedio
About 4 hours, plus printing
Istruzioni
1
1
From a swing to a twist
From a swing to a twist
Caricamento del notebook Jupyter…
2
2
A turned staff before it
A turned staff before it
Boyers turns his shaft with a crank; Leavenworth twists his with cords.
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3
Read US 14,458
Read US 14,458
"By taking hold of the handle of the lever, and moving it with a reciprocating motion, the cords attached to arc of the lever, will alternately wind and unwind on the pulley F, causing it to partially revolve in the direction of the lever, thus causing the cords E, E, to move the staff with a reciprocating motion."
4
4
Print the parts
Print the parts
Print the pulley (/uploads/blueprints/cord-wound-staff-churn-drive-pulley.stl), the lever head (/uploads/blueprints/cord-wound-staff-churn-drive-lever-arc.stl), the frame (/uploads/blueprints/cord-wound-staff-churn-drive-frame.stl) and the dash (/uploads/blueprints/cord-wound-staff-churn-drive-dash.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
Materiali per questo passaggio:
Filamento PETG1 pezzoStrumenti necessari:
Stampante 3D a filamento (FDM)5
5
Post, frame and pulley
Post, frame and pulley
Stand a pine post beside a tapered food-grade bucket. Clamp the frame on its top, with a pine arm out over the bucket's centre carrying the pulley on a 10 mm rod. Pin the lever head on a 10 mm rod lower in the frame and glue a 12 mm dowel handle into it.
Materiali per questo passaggio:
Tavola di pino1 pezzo
Secchio da 20 litri1 pezzo
Tondo di acciaio dolce1 pezzo
Tasselli di legno duro1 pezzo
Vite da legno #8 x 1"1 pezzoStrumenti necessari:
Sega a mano
Trapano a batteria
Serie di punte da trapano
Set di cacciaviti6
6
Staff, dash and cords
Staff, dash and cords
Push the dash onto a 16 mm hardwood staff and stand it in the bucket, its top in the pulley's large groove. Tie a cord from each pulley groove, wind it a few turns round the staff, the two the same way, and fix it to a pin in the staff. Tie cord H round the pulley's small hub in opposite directions to the two ends of the lever's arc.
Materiali per questo passaggio:
Tasselli di legno duro1 pezzo
Cordino1 pezzo
Colla da legno1 pezzoStrumenti necessari:
Trapano a batteriaSerie di punte da trapano7
7
The patent drawing
The patent drawing
US 14,458 drawing sheet, public domain (expired patent).
8
8
Churn
Churn
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 3 litres. Swing the lever steadily to and fro; 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.
Materiali per questo passaggio:
Panna da montare3000 ml
Sale marino grosso1 pezzo
Acqua1 pezzoStrumenti necessari:
Termometro a sonda permanente
Cronometro
Bilancia digitale da cucina
Grande ciotola da impasto in acciaio inossidabile9
9
Troubleshooting
Troubleshooting
Cord-wound drive troubleshooting.
Flow
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10
History and honest limits
History and honest limits
**Lucius Leavenworth** of Trumansburg, Tompkins County, New York, US 14,458, 18 March 1856. The lever's wrist pin could take "a connecting rod from a rocking chain or other power." He claimed the cords attached to the pulley and wound on the staff to give a rotary motion. A bucket, pine and printed parts stand in for his. FDM prints hold food in their layer lines, so wash well and replace when worn.
Materiali
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- 3000 mlSegnaposto
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Strumenti richiesti
9- Segnaposto
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- 1 vendor sell this, none ship to you yetSegnaposto
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