Ukusebenzisana
UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Star-Dasher Crank Churn: Geared Crank and Flywheel Drive Two Notched Dashers Set Point Over Gap
Lorenzo Lake of Middlebury, Pennsylvania, received US 24,845, dated 19 July 1859, for an upright dash churn worked by gearing so that a child could churn even a very large churn. A handle turns a large wheel driving a wheel half its size on a crank shaft with a balance wheel; the crank's pitman works the staff up and down through a guide. The staff carries two dashers of boards with V-shaped slots in their ends, set so the points of one lie over the gaps of the other, cutting the cream as it escapes going down and up and dashing it against the sides.
This rung builds it with printed gears over a 20-litre bucket.
Ophakathi
About 2 days, plus printing
Imiyalelo
1
1
Strokes per turn of the handle
Strokes per turn of the handle
Ilayisha incwadi ye-Jupyter…
2
2
A crank and pitman working the staff, before it
A crank and pitman working the staff, before it
Dorsey's pitman also turned the staff. Lake's only lifts it, through gearing and a balance wheel for speed.
3
3
Read US 24,845
Read US 24,845
"... these dashers are so placed upon the staff that the sharpened ends of the boards thus cut, will cover the spaces left between the boards in the dasher immediately above or below—so that when operated in the churn the cream will be more thoroughly cut and the globules will be more easily and speedily broken."
4
4
Print the wheel E
Print the wheel E
The 40-tooth wheel for the handle's shaft. PETG, 0.2 mm layers, 50 % infill, 5 walls.
5
5
Print the wheel F
Print the wheel F
The 20-tooth wheel for the crank shaft. PETG, 0.2 mm layers, 50 % infill, 5 walls.
6
6
Platform, upright and frame
Platform, upright and frame
Screw a pine platform C 500 x 550 mm. Stand a 70 mm upright C' 990 mm tall at its back, braced. Screw a hardwood beam 130 x 255 x 40 mm out from the upright's top toward the front, and hang three hardwood blocks from it, each bored 20.5 mm 900 mm above the floor: two either side of the crank, 90 mm apart, for shaft G, and one 90 mm to the side for wheel E's shaft. Screw a hardwood guide arm I from the upright to over the bucket 430 mm up, with a 26 mm square hole.
Izinto zokwakha zalesi sinyathelo:
Ipulangwe lomphayini2 izicucu
Ukhuni oluthambile lwe-70x70 mm2 izicucu
Ipulangwe Lokhuni Oluqinile2 izicucu
Isikulufu sokhuni #10 x 3"20 izicucu
Iglu Lokhuni1 ucezuAmathuluzi adingekayo:
Isaha Sesandla
Ibhola Elingenantambo
Isethi yezingqamuzana ezinjengefosholo
Izimbazo zokubaza
Isilinganiso Sokulingana
Ithephu Lokulinganisa7
7
Crank shaft G, wheels and handle
Crank shaft G, wheels and handle
Make the crank from two hardwood webs 30 x 10 mm, a 12 mm stainless pin 50 mm off the axis between them, and two 20 mm steel stubs, one each side, run through the hanging blocks. Fix wheel F on the rear stub and a plywood balance wheel B 300 mm across, with spokes, on the front stub. Run a 20 mm steel shaft through the third block with wheel E meshing with F, and a hardwood handle M 57 mm long with a dowel grip on its end.
Izinto zokwakha zalesi sinyathelo:
Ipulangwe Lokhuni Oluqinile1 ucezu
Insimbi engagqwali eyindukwana1 ucezu
Insimbi eluhlaza eyindukwana2 izicucu
Ifilamenti ye-PETG1 ucezu
Ishidi le-plywood1 ucezu
Izikhonkwane zokhuni oluqinile1 ucezuIglu Lokhuni1 ucezu
Iqoqo lamabhawoti anezinhlangothi eziyisithupha4 izicucu
Inati Yokukhiya Enenayiloni4 izicucuAmathuluzi adingekayo:
Iphrinta ye-3D yentambo (i-FDM)
Isaha Le-jigsaw
Isaha SensimbiIbhola Elingenantambo
Iqoqo Lamakhanda Ebhola
Izinsimbi zokuhlikihla (ezesandla)
Isipanela esilungisekayo8
8
Staff, dashers and pitman
Staff, dashers and pitman
Cut two plywood dashers L, each a 16-point star 250 mm across with its notches 20 mm deep, and a 25 mm square hole in the middle. Glue them on a 25 mm square hardwood staff D 150 mm apart, the upper turned half a point from the lower. Cut a hardwood pitman H 300 mm between centres with a fork at its foot; fit a hardwood thimble J on the staff's top and push an 8 mm stainless rod a through the fork, thimble and staff. Put the staff through the guide and the bucket's lid and set the lower dasher 25 mm off the floor at the bottom of the stroke.
Izinto zokwakha zalesi sinyathelo:
Ishidi le-plywood1 ucezuIpulangwe Lokhuni Oluqinile2 izicucuIglu Lokhuni1 ucezuInsimbi engagqwali eyindukwana1 ucezu
Iwasha Eliyisicaba2 izicucu
Ibhakede Lamalitha Angu-201 ucezuAmathuluzi adingekayo:
Isaha Le-jigsawIsaha SesandlaIzimbazo zokubazaIbhola ElingenantamboIqoqo Lamakhanda Ebhola
Iphepha Lokugaya9
9
The build in 3D
The build in 3D
FreeCAD model of this build, half the bucket cut away: the platform and upright, the beam with its hanging blocks, the split crank shaft with balance wheel and wheel F, wheel E and handle M, the forked pitman and thimble, the staff through its guide, and the two star dashers. It was checked at eight crank angles.
10
10
Churn
Churn
Pour about 10 litres of heavy cream at about 15 °C into the bucket, checked with the thermometer, and put the lid on round the staff. Turn the handle steadily and time it. When the butter comes, pull pin a, lift the staff out, pour off the buttermilk, wash the butter in cold water until it runs clear, work in a pinch of salt and weigh it.
Izinto zokwakha zalesi sinyathelo:
Ukhilimu ojiyile10 l
Usawoti Wolwandle Omkhulu1 ucezu
Amanzi1 ucezuAmathuluzi adingekayo:
Ithemomitha enenaliti eshiywa ngaphakathi
Iwashi Lokumisa Isikhathi
Isikali Sedijithali Sasekhishini
Isitsha esikhulu sokuxuba sensimbi engagqwali11
11
Troubleshooting
Troubleshooting
Star-dasher churn troubleshooting.
Flow
Loading...
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12
History and honest limits
History and honest limits
**Lorenzo Lake** of Middlebury, Tioga County, Pennsylvania, assignor to himself and William Patton of Towanda, US 24,845, 19 July 1859, "Churn". He claimed the dasher L worked by the devices described, not the gearing as such. His only proportion is wheel F about half wheel E. His dashers are boards with V-slotted ends; ours are plywood stars cut to the same pattern. Every size is ours.
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