Collaborazione
ARTE
BELLEZZA E BENESSERE
MESTIERE
CULTURA E STORIA
DIVERTIMENTO
AMBIENTE
CIBO E BEVANDE
INGEGNERIA INVERSA
SCIENZE
SPORT
TECNOLOGIA
INDOSSABILI
Rotating-Receiver Stationary-Break Churn: The Whole Cream Vessel Turns, a Narrow Fixed Break Churns It
Mortimer S. Harsha of Sycamore, Illinois, received US 26,459, dated 13 December 1859, for what he called the "Vertical Rotating and Stationary Break Churn". Instead of a dasher, the whole cream vessel turns on an upright shaft with a pointed foot, driven by a gear and crank below it, while one narrow perforated break, fixed to a removable top, stands still near the vessel's side. The turning cream keeps going like a balance wheel, so little effort keeps it churning.
The patent gives no sizes; every size here is ours.
Intermedio
About a day, plus printing
Istruzioni
1
1
The turning cream against a still break
The turning cream against a still break
Caricamento del notebook Jupyter…
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2
Fixed brakes in turning cream, three months before
Fixed brakes in turning cream, three months before
Taylor turned a dasher among fixed brakes. Harsha turns the vessel itself against a single fixed break.
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3
Read US 26,459
Read US 26,459
"This is accomplished by said break presenting only a small resisting surface to the moving cream, while the cream being made to rapidly rotate on said vertical or upright shaft only against said break dash, becomes, along with its receiver, a receptacle of the power applied, similar to that of a balance wheel, and so by its own accumulative force, when power is once applied, puts it in motion"
4
4
Print the gear wheel G
Print the gear wheel G
Crown wheel, 36 teeth on its face, module 2, with a hub bored 12.4 mm and a cross hole for a pin. PETG, 0.2 mm layers, 40 % infill, 4 walls.
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5
Print the pinion
Print the pinion
Spur pinion, 12 teeth, module 2, with a long hub bored 16.4 mm and a cross hole for a pin. PETG, 0.2 mm layers, 40 % infill, 4 walls.
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6
Print the socket
Print the socket
A cup 50 mm across and 22 mm tall with a cone recess for the shaft's point. PETG, 0.2 mm layers, 40 % infill, 4 walls.
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7
Print the flange
Print the flange
A disc 200 mm across and 15 mm thick bored 16.6 mm, to carry the receiver. Print with 100 % infill. PETG, 0.2 mm layers, 40 % infill, 4 walls.
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8
Base E, brace H, posts F and top D
Base E, brace H, posts F and top D
Make a hardwood base 600 x 600 mm and screw the socket in its middle. Screw a brace H to it, an upright 30 x 40 mm with an arm reaching over the socket, bored 16.6 mm 25 to 55 mm up as the shaft's journal box. Tenon two posts 30 x 50 mm, 515 mm tall, into the base 490 mm apart, and make a top board 550 x 160 x 20 mm with mortises to drop onto their tenons so it lifts off. Set two chairs 44 x 30 mm, 124 mm tall, for the gear wheel's shaft.
Materiali per questo passaggio:
Tavola di legno duro3 pezzi
Colla da legno1 pezzo
Viti da legno20 pezzi
Filamento PETG1 pezzoStrumenti necessari:
Stampante 3D a filamento (FDM)
Sega circolare da banco
Seghetto alternativo
Scalpello da mortase
Mazzuolo di legno
Trapano a batteria
Serie di punte da trapano
Morsetto a barra
Metro a nastro9
9
Shaft C, receiver A and gearing
Shaft C, receiver A and gearing
File one end of a 16 mm stainless shaft 170 mm long to a point. Pin the pinion and the flange on it, stand its point in the socket through the journal box, and bolt the stockpot's bottom to the flange with stainless screws sealed with silicone. Fit the crown wheel on a 12 mm stainless shaft through the chairs, meshing under the pinion, with a crank and handle on its end.
Materiali per questo passaggio:
Barra di acciaio inossidabile2 pezzi
Pentolone1 pezzo
Viti da metallo4 pezzi
Dado autobloccante con inserto in nylon4 pezzi
Rondella piana8 pezzi
Sigillante siliconico1 pezzo
Tasselli di legno duro1 pezzoStrumenti necessari:
Seghetto per metalli
Lime (lima a mano)Trapano a batteriaSerie di punte da trapano
Chiave regolabile a rullino
Set di cacciaviti10
10
Break dash B
Break dash B
Cut a hardwood break 60 x 15 mm long enough to reach from the top board to 25 mm above the receiver's floor, bore ten 16 mm holes through it, and fix it by a tenon through the top board so it hangs 30 mm in from the receiver's side.
Materiali per questo passaggio:
Tavola di legno duro1 pezzoColla da legno1 pezzoStrumenti necessari:
Sega circolare da banco
Set di punte a lanciaTrapano a batteriaScalpello da mortaseMazzuolo di legno
Carta abrasiva11
11
The build in 3D
The build in 3D
FreeCAD model of this build, the receiver cut through the middle: the base with its socket, brace and posts, the shaft with pinion and flange, the crown wheel and crank, the turning receiver and the fixed perforated break hanging from the top.
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12
Churn
Churn
Lift the top off, pour about 9 litres of heavy cream at about 15 °C into the receiver, checked with the thermometer, and put the top back. Turn the crank steadily, timing it: once the cream is moving it keeps going with little effort. When the butter comes, lift the top and break out, take out the butter, drain the buttermilk, wash the butter in cold water until it runs clear, salt and weigh it.
Materiali per questo passaggio:
Panna da montare9 l
Sale marino grosso1 pezzo
Acqua1 pezzoStrumenti necessari:
Termometro a sonda permanente
Cronometro
Bilancia digitale da cucina
Grande ciotola da impasto in acciaio inossidabile13
13
Troubleshooting
Troubleshooting
Rotating-receiver churn troubleshooting.
Flow
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History and honest limits
History and honest limits
**Mortimer S. Harsha** of Sycamore, DeKalb County, Illinois, assignor to himself, Rufus S. Sanborn and H. B. Jones, US 26,459, 13 December 1859, "Churn". He claimed: "An entirely stationary break dash in combination with a cream receiver, made to rotate on a vertical or upright shaft". His break is made "of such size as the relative size of the machine requires, and of any common form or shape"; the patent gives no sizes, and every size here is ours. His receiver was tin, zinc or wood; ours is a stainless stockpot.
Materiali
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Strumenti richiesti
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