SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Sliding-Bar Air-Tube Dasher Churn: Churn Low, Then Raise the Bar and Turn Back to Gather
William H. Truesdell of Elgin, Illinois, received US 18,936, dated 22 December 1857, for a dasher bar that slides on the upright shaft, with an inclined board and an air tube at each end. It churns near the bottom; then it is raised to the surface and turned gently back, "the inclined boards forming chambers" to gather the butter.
This rung prints the dasher bar, collar, step and gears, builds the churn and makes butter.
Kati
About 4 hours, plus printing
Maagizo
1
1
Down to churn, up to gather
Down to churn, up to gather
Inapakia daftari la Jupyter…
2
2
Lifting to gather, before it
Lifting to gather, before it
Dickinson lifts his breakers to gather; Truesdell lifts the whole dasher bar to the surface.
3
3
Read US 18,936
Read US 18,936
"After the butter is produced, the bar D is raised to the surface, or nearly to the surface, of the cream and is supported in proper position by the pin (h) which is inserted in the shaft B below the collar (g). By turning the shaft B, gently in a reverse direction the butter will be collected, the inclined boards (i) forming chambers to receive it."
4
4
Print the parts
Print the parts
Print the dasher bar with its inclined boards, the collar, the step, the crown wheel, the pinion and the standard. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
Vifaa kwa hatua hii:
Uzi wa PETG1 kipandeZana zinazohitajika:
Printa ya 3D ya nyuzi (FDM)5
5
Print the dasher bar
Print the dasher bar
The dasher bar, printed as step 4 describes.
6
6
Print the collar
7
7
Print the step
8
8
Print the crown wheel
Print the crown wheel
The crown wheel, printed as step 4 describes.
9
9
Print the pinion
10
10
Print the standard
Print the standard
The standard, printed as step 4 describes.
11
11
Bar, tubes and collar
Bar, tubes and collar
Glue an 8 mm food-grade tube into each socket so its top stands above the cream, slightly inclined. Slide the bar onto a 10 mm square hardwood shaft standing in the step in a round food-grade container. Hang the bar from the collar by four 3 mm stainless rods, and drill the shaft for a pin under the collar at the churning and the gathering heights.
Vifaa kwa hatua hii:
Bomba la PVC1 kipande
Epoksi ya Sehemu Mbili1 kipande
Vijiti vya mbao ngumu1 kipande
Chombo cha kuhifadhi cha daraja la chakula1 kipande
Ufito wa chuma laini1 kipandeZana zinazohitajika:
Msumeno wa chuma
Kekee cha Betri
Seti ya vichimbuzi12
12
Lid, gears and crank
Lid, gears and crank
Fix half the lid with a hole for the shaft, the pinion on its top and the standard with the crown wheel meshing it; screw a dowel handle into the wheel.
Vifaa kwa hatua hii:
Ufito wa chuma laini1 kipandeVijiti vya mbao ngumu1 kipande
Skrubu ya mti #8 x inchi 11 kipandeZana zinazohitajika:
Seti ya bisibisiKekee cha Betri13
13
The build in 3D
The build in 3D
FreeCAD model of this build: the container cut away to show the dasher bar low on the shaft with its inclined boards and air tubes, the collar and rods above, and the crown wheel and pinion.
14
14
Churn low, gather high
Churn low, gather high
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. With the bar low, crank steadily; time until the butter comes. Raise the bar to the surface, pin the collar there, and crank gently the other way to gather the butter. 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.
Vifaa kwa hatua hii:
Malai nzito2000 ml
Chumvi ya Bahari Mbichi1 kipande
Maji1 kipandeZana zinazohitajika:
Kipima joto chenye kijiti kinachobaki ndani
Saa ya kupima muda
Mizani ya dijitali ya jikoni
Bakuli kubwa la kuchanganyia la chuma cha pua15
15
Troubleshooting
Troubleshooting
Sliding-bar churn troubleshooting.
Flow
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16
16
History and honest limits
History and honest limits
**William H. Truesdell** of Elgin, Kane County, Illinois, US 18,936, 22 December 1857. He did not claim bringing air into the cream, nor adjusting dashers broadly; he claimed the bar and its inclined boards that let air in turning one way and form chambers to gather the butter turning the other. Printed parts and a container stand in for his. FDM prints hold food in their layer lines, so wash well and replace when worn.
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CC0 Umma Wote
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