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Rack-and-Pinion Opposed-Dasher Churn: Two Rows of Hanging Dashers Move Opposite Ways Through Slots in the Lid
Nelson Gabel of Gratis, Ohio, received US 33,080, dated 20 August 1861, for a box churn worked by racks and a pinion. Two slides lie on the lid over two slots, each carrying three dashers that hang down into the cream. A rack on each slide meshes a pinion between them, so when a lever on a standard pushes one slide to and fro, the other moves the opposite way. The currents meet and break against each other and the box's ends.
The patent gives no sizes; every size here is ours.
Intermedio
About 3 days
Instrucciones
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1
Two rows passing each other
Two rows passing each other
Cargando el cuaderno de Jupyter…
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A frame slid to and fro on the lid, a year and a half before
A frame slid to and fro on the lid, a year and a half before
Morgan's sliding frame spins beaters by a cord. Gabel's two slides carry the dashers themselves, and a pinion makes them move against each other.
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3
Read US 33,080
Read US 33,080
"Thus it will be observed that when milk is put into the box and the lever (a) worked to and fro the agitation of the milk will be very great. As the currents each way will be broken and dashed in opposite directions the globules will thus be crushed both by sudden concussion against the side of the box and the violent reverse action of the currents."
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Box A on legs, top B with two slots
Box A on legs, top B with two slots
Glue up a hardwood box A 600 x 300 mm inside and 300 deep from 20 mm boards, the joints sealed with silicone sealant, and screw four hardwood legs 40 x 60 mm, 220 long below it. Cut a 20 mm HDPE or hardwood top B to fit over the mouth, with two slots 30 mm wide and 500 long, 33 mm either side of the centre line, and a 12.6 mm hole at the centre for the shaft C.
Materiales para este paso:
Tabla de madera dura4 piezas
Cola de carpintero1 pieza
Sellador de silicona1 pieza
Tornillos para madera30 piezas
Plancha de HDPE1 piezaHerramientas necesarias:
Sierra de mesa
Fresadora de mano
Sierra de calar
Taladro inalámbrico
Juego de brocas
Sargento
Juego de destornilladores
Cinta métrica5
5
Print the racks b (two)
Print the racks b (two)
A rack: 416 mm long, module 2.5, 20 mm thick. Print two, in halves if the bed is short. PETG, 0.2 mm layers, 30 % infill, 4 walls.
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Print the pinion a
Print the pinion a
The pinion: 16 teeth, module 2.5, 20 mm thick, 12.2 mm bore. PETG, 0.2 mm layers, 30 % infill, 4 walls.
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Slides h, racks b, dashers k
Slides h, racks b, dashers k
Cut two hardwood slides h 560 x 50 x 25 mm and screw a rack b along the inner edge of each, teeth inward. Cut six 12 mm HDPE dashers 115 mm wide and 210 long; drill four 25 mm holes in four of them, the end ones. Screw each to a hardwood stem 20 x 20 mm, 90 long, and fix three stems under each slide, at its middle and 180 mm either side, to hang through the slot with the dashers 40 mm off the floor. Lay the slides on the top over the slots, racks facing.
Materiales para este paso:
Tabla de madera dura1 pieza
Filamento PETG1 piezaPlancha de HDPE1 piezaTornillos para madera20 piezasCola de carpintero1 piezaHerramientas necesarias:
Impresora 3D de filamento (FDM)Sierra de mesaSierra de calar
Juego de brocas de palaTaladro inalámbricoJuego de brocasJuego de destornilladores8
8
Shaft C, pinion a and strap D
Shaft C, pinion a and strap D
Cut a 12 mm stainless shaft C 90 mm long, stand it in the top's centre hole and pin the pinion a on it meshing both racks. Bend a mild steel flat bar strap D over the pinion and the slides, bore it 12.6 mm over the shaft's top, and screw its feet to the top beyond the slides.
Materiales para este paso:
Varilla de acero inoxidable1 piezaFilamento PETG1 pieza
Pletina de acero dulce1 piezaTornillos para madera4 piezas
Pasador de aletas1 piezaHerramientas necesarias:
Sierra para metales
Limas (lima de mano)
Tornillo de bancoTaladro inalámbricoJuego de brocasJuego de destornilladores9
9
Lever d, standard m and lever f
Lever d, standard m and lever f
Bolt a mild steel flat bar lever d, 470 mm long, to the outer slide with a spacer block, reaching past the box's end. Make a standard m of two hardwood posts 30 x 20 mm joined at the foot, standing beside the box's end and reaching 260 mm above the top, with a 10 mm bolt across their tops. Hang a flat bar lever f between them on the bolt, its lower end slotted over a bolt through the end of d and its upper end a handle.
Materiales para este paso:
Pletina de acero dulce2 piezasTabla de madera dura1 pieza
Surtido de tornillos hexagonales3 piezas
Tuerca autoblocante con inserto de nailon3 piezas
Arandela plana6 piezasCola de carpintero1 piezaTornillos para madera6 piezasHerramientas necesarias:
Sierra para metalesLimas (lima de mano)Tornillo de bancoTaladro inalámbricoJuego de brocas
Llave inglesa ajustableSierra de mesa10
10
The build in 3D
The build in 3D
FreeCAD model of this build, the box's front wall cut away: the two rows of hanging dashers (the end ones holed), the slides on the top with their racks and the pinion under its strap, and the levers d and f on the standard.
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Churn
Churn
Lift the top off with the slides and dashers, pour about 20 litres of heavy cream at about 15 °C, checked with the thermometer, into the box, and set the top back. Work the lever f to and fro through its full swing, timing it. When the butter comes, lift the top and dashers out, take out the butter, pour the buttermilk into a bowl, wash the butter in cold water until it runs clear, salt and weigh it.
Materiales para este paso:
Crema de leche espesa20 l
Sal marina gruesa1 pieza
Agua1 piezaHerramientas necesarias:
Termómetro de sonda permanente
Cronómetro
Báscula digital de cocina
Bol grande de acero inoxidable12
12
Troubleshooting
Troubleshooting
Rack-and-pinion churn troubleshooting.
Flow
Loading...
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History and honest limits
History and honest limits
**Nelson Gabel** of Gratis, Preble County, Ohio, US 33,080, 20 August 1861, "Churn". He claimed "the employment and arrangement of fixed pinion (a), double reciprocating racks (b b) and slides (h h)". His text calls the hand lever both (a) and (f). He gives the dashers only as drawn, three to a slide with holes in the end ones; ours are plain boards. The patent gives no sizes; every size here is ours.
Materiales
15- 4 piezasMarcador de posición
- 3 piezasMarcador de posición
- 1 piezaMarcador de posición
- 60 piezasMarcador de posición
- 1 piezaMarcador de posición
- 2 piezasMarcador de posición
- 1 piezaMarcador de posición
- 2 piezasMarcador de posición
- 1 piezaMarcador de posición
- 3 piezasMarcador de posición
- Marcador de posición
- 6 piezasMarcador de posición
- Marcador de posición
- 1 piezaMarcador de posición
- 1 piezaMarcador de posición
Herramientas requeridas
18- 1 vendor sell this, none ship to you yetMarcador de posición
- Marcador de posición
- 1 vendor sell this, none ship to you yetMarcador de posición
- 1 vendor sell this, none ship to you yetMarcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- 1 vendor sell this, none ship to you yetMarcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
Archivos de diseño
3
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