Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Brake Cylinder: Piston with Packing Leather, Expander Ring and Release Spring (Westinghouse Air Brake Co., 1901)
The air cylinder that puts on a railway car's brakes. Air let into the pressure end drives the piston out, and its push rod works the brake levers. When the air is let out, a release spring pushes the piston back. A cup of leather, held against the wall by a spring ring, stops the air from leaking past the piston.
Result: a brake cylinder. In the book's driver-brake example, an 8-inch cylinder fully applied puts 2,500 pounds on its piston.
Source: Westinghouse Air Brake Company, Air Brake Instruction Book (1901), pp. 55-57 and 97. Unknown: every size except the 8-inch bore, and the metal of every part except the leather; the book does not give them. Picture: Wikimedia Commons.
Hejuru
1 week
Amabwiriza
1
1
Bore the cylinder
Bore the cylinder
Make the cylinder with a pressure end and an open end closed by the non-pressure head. Cut a small groove along the wall, the leakage groove: a slight flow of air into the cylinder then escapes through it to the open end instead of pushing the piston out. Unknown: the metal and the sizes (the book's example is an 8-inch cylinder). Ours: bored on a lathe.
Ibikoresho by'iyi ntambwe:
Icyuma kitazwi1 as requiredIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Igiti cyo gukata imbere mu mwobo
Icyegeranyo cy'ibikoresho by'imashini izunguruka (HSS)
Kalipe ya Vernier
Ingano zitazwi2
2
Make piston, follower and heads
Make piston, follower and heads
Turn the piston with its sleeve, into which the push rod from the brake levers fits, a follower plate, and the non-pressure head. Drill the piston for the studs that hold the follower. Unknown: metal and sizes. Ours: lathe and drill press.
Ibikoresho by'iyi ntambwe:
Icyuma kitazwi1 as requiredIbikoresho bikenewe:
Imashini yo guhinguza icyumaIcyegeranyo cy'ibikoresho by'imashini izunguruka (HSS)
Icyuma Cyivumbura GihagazeKalipe ya VernierIngano zitazwi3
3
Fit the packing leather
Fit the packing leather
Clamp the packing leather to the piston under the follower plate with studs and nuts; its flange presses against the cylinder wall to keep the air from escaping past the piston. Put the round spring packing expander inside the flange to hold it against the wall. Keep the follower nuts tight. Ours: the leather cut to shape with a knife.
Ibikoresho by'iyi ntambwe:
Uruhu rwatunganyijwe1 as requiredIcyuma kitazwi1 studs and expander ring
Umupira w'Impande Esheshatu1 ikirundoIbikoresho bikenewe:
Icyuma gikata cy'akazi
Isupana ihindukaIngano zitazwi4
4
Assemble with the release spring
Assemble with the release spring
Slide the piston into the cylinder, put the release spring behind it and close the cylinder with the non-pressure head, so the spring forces the piston back to release whenever the air pressure is let out of the pressure end. The book's maintenance rule: a light grease in the cylinder, especially at the top and inside the packing leather where the expander rests.
Ibikoresho by'iyi ntambwe:
Ikusanyirizo ry'Imizingo Ikandamizwa1 release springIbikoresho bikenewe:
Isupana ihindukaIngano zitazwiIbikoresho
4- 1 studs and expander ringUmwanya
- 1 as requiredUmwanya
- 1 ikirundoUmwanya
- 1 release springUmwanya
Ibikoresho bikenewe
8- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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