Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Water Bath: Copper Tank with Plug-In Heaters and an Air-Tube Thermostat (Lidberg, US 1,397,766, 1921)
An electric constant-temperature water bath for laboratory and bacteriological work. A copper tank sits in an insulated fibre-board box; two heater tubes and a thermostat tube are soldered through its wall so the heating coils and the switch plug in from outside. A switch adds extra coils to heat the water up quickly; then the thermostat alone holds the set temperature. Perforated trays on adjustable rods hold the tubes or flasks at the depth you choose.
Result: a thermostatic water bath that holds its water at a set temperature.
Source: T. Lidberg (Chicago Surgical & Electrical Co.), US 1,397,766 (1921). Unknown: sizes, the temperature range, the heater wire. Picture: the patent drawing.
Hagati
Unknown
Amabwiriza
1
1
Build the insulated tank
Build the insulated tank
Make a rectangular box of fibrous board on four short legs and line it with hair felt or cloth. Set a sheet copper tank inside, its walls a little taller than the box and turned over the top edge as a bead. Make perforated trays of several shelves, each with an upright rod hooked at the top for lifting, and on each rod a sliding clip with a set screw whose end rests on the tank edge, to set how deep the tray hangs. Not given: sizes.
Ibikoresho by'iyi ntambwe:
Ibikoresho bitazwi1 fibrous board box, legs
Igitambaro kitazwi1 hair felt or cloth lining
Urupapuro rw'Umuringa1 tank
Isahani y'akayunguruzo ifite imyobo1 trays
Icyuma kitazwi1 rods, clips
Ibitorezo by'imashini1 igiceIbikoresho bikenewe:
Ibyuma bikata ibyuma bisanzwe
Icyuma cyo gusudira
Ingano zitazwi2
2
Fit the heater tubes
Fit the heater tubes
Solder two watertight tubes across the tank, each closed at its inner end and open outside the wall, and a third for the thermostat. For each heater, wind two coils on a rod held in the tube by an insulating disk and an end head; join one end of each coil to the rod and the others to plates on the head, and cover the terminals with a cap plate. Slide each heater into its tube. Ours: nichrome wire. Not given: the coil ratings.
Ibikoresho by'iyi ntambwe:
Umuyoboro w'umuringa3 heater and thermostat tubes
Guhambira kwa Sn/Pb1 as needed
Insinga ya nikoromu1 four coilsIcyuma kitazwi2 rods, plates, caps
Ibikoresho bikumira amashanyarazi bitazwi1 disks, headsIbikoresho bikenewe:
Icyuma cyo gusudira
Umucumita w'Ibyuma3
3
Make the air-tube thermostat
Make the air-tube thermostat
In the closed thermostat tube, mount on an insulating disk a strip carrying a thermostatic bar with a contact at its free end. Facing it, pivot an adjustable bar with its own contact on a bracket in the tube's insulating head, held by a spring against an adjusting screw with a knob outside: turning it sets the temperature at which the contacts open. Bridge the contacts with a condenser to stop sparking. The air in the tube takes the bath's temperature and bends the bar. Ours: a bimetallic strip.
Ibikoresho by'iyi ntambwe:
Urukariso rw'ibyuma bibiri1 thermostatic barIcyuma kitazwi1 strip, bar, bracket, contacts, screwIbikoresho bikumira amashanyarazi bitazwi1 disk, head
Ikusanyirizo ry'Imizingo Ikandamizwa1 igice
Agafuka k'ibibiko by'amashanyarazi1 spark condenserIbikoresho bikenewe:
Ikusanyirizo ry'ibitorezi4
4
Wire and use it
Wire and use it
Wire one coil of each heater through the thermostat, and the other coil of each through a hand switch, with a lamp across the supply to show when current flows. To start, close the switch so all four coils heat the water up. Once it is at temperature, open the switch: the thermostat then switches its two coils on and off to hold the bath steady. Lower the trays of tubes or flasks to the depth wanted.
Ibikoresho by'iyi ntambwe:
Buto y'agati1 igice
Soketi y'itara1 igice
Itara1 igice
Umugozi w'amashanyarazi woroshye ufite purize1 igiceIbikoresho bikenewe:
Ikusanyirizo ry'ibitoreziIbikoresho
17- 1 fibrous board box, legsUmwanya
- 1 hair felt or cloth liningUmwanya
- 1 tankUmwanya
- Umwanya
- 1 strip, bar, bracket, contacts, screwUmwanya
- 1 igiceUmwanya
- 3 heater and thermostat tubesUmwanya
- 1 as neededUmwanya
- 1 four coilsUmwanya
- 1 disk, headUmwanya
- 1 thermostatic barUmwanya
- Umwanya
- 1 spark condenserUmwanya
- Umwanya
- 1 igiceUmwanya
- 1 igiceUmwanya
- Umwanya
Ibikoresho bikenewe
5- 2 vendors sell this, none ship to you yetUmwanya
- Umwanya
- Umwanya
- Umwanya
Ibikoresho by'Ibishushanyo Bifitanye Isano
Iki gishushanyo gikora
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.