i : America’s Leading Supply House 
HERE’S THE SOIL STERILIZING TRAILER THAT 
GROWERS HAVE ALWAYS WANTED! 
THE NEW ‘*PORTO’’ 
PORTABLE SOIL STERILIZER 
NOW, SOIL CAN BE STERILIZED AND PROCESSED DRY 
“PORTO”, the completely portable, all new 1% yard capacity sterilizer features a 
unique steam rack below the soil container perforated with dozens of steam orifices. 
Thorough penetration can be obtained with only 3 to 5 pounds of steam pressure... 
in only about one hour! The soil remains in the sterilizer and is transported and 
treated therein so no unloading or loading of soil between the field and potting bench 
is necessary. You save time and labor with the ‘Porto’! 
The steam chamber is beneath soil compartment so condensate accumulates in the 
chamber away from the soil. Thus the soil remains dry and ready for use. Valves 
at each end of the unit permit use with any heating boiler or other convenient source 
of steam, such as the Upgrader Junior Portable Steam Sterilizer. Adjustable pedestal 
keeps unit level on uneven ground. Trailer hitch for hauling is included. 33” low 
design assures ease in loading and unloading. Steel all-welded construction means 
longer life under the most rugged operating conditions, 4’ x 8’ overall size insures 
transportability behind any piece of mobile equipment. 
THIS IS NOT A STEAM GENERATOR 
$345.00 aa Price (less tires). . 
Janesville, Wisc. 
SPECIFICATIONS 
Capacity eee hmm, ae 1% yards of soil 
Height ce enc ne 33 inches 
NOLZG iy Matai ny sha einae feet oas .8 feet long x 4 feet wide 
Material .............10 gauge steel, all welded and formed 
Wiselsatewnsen 7.00 .. Standard 15” wheels furnished. Use any 
15” auto tire 
Steam Pressure Req...3 to 5 lbs. 
$345.00 F.O.B. Janesville, Wisconsin 
Send for detailed circular 
a 
UPGRADER JUNIOR 
HYDRAULIC STEAM GENERATOR 
AND CLEANER 
Portable, self-contained steam generator produces up to 140 lbs. steam in just 70 
seconds. Steams soil in greenhouse benches up to 100 ft. long. Ideal for use with 
Porto Soil Sterilizing Trailer. 
Also equipped with jet gun for cleaning and sterilizing tools, flats, motors, equip- 
ment, etc. 
Improves insecticide spraying—high pressure steam carries insecticide spray into 
every corner of greenhouse. 
Essentially this amazing little unit consists of a top-quality all-brass pump, one of the 
best-make electric motors, a forced-draft* oil burner with 6-gallon fuel tank, and a 
durable coil of heavy pipe... all enclosed within an attractive housing, and wheel- 
mounted for complete portability. The pressure hose is steel-reinforced fiber glass, 
heat resisting. Panel switches turn on water pump and burner blower, and there’s a 
manual fuel-control valve. That's all! Steam pressure is shown by a visual gauge. 
A pop-off valve assures absolute safety. This capable unit is built throughout for 
top performance, long life, low maintenance. 
OPERATING SPECIFICATIONS 
PRESSURE Factory set to pop-off at 140 p.s.i. 
COMBUSTION Positive, forced-draft burner. Produces steam in 70 seconds from 
cold start; up to 120 p.s.i. in three minutes. 
FUEL USED Kerosene or fuel oils Nos. 1 or 2. 
HEATING Spiral durable piping. Coils are precision-spaced and baffled for 
COIL fast heat build-up and high thermal efficiency. 
MOTORS Pump motor: 1/3 h.p. capacitor-type. Burner-blower motor: 1/15 h.p. 
110-volt a.c. Plug-in cord included. 
PUMP Positive, all-brass type. Needs no lubricating. 
HOSE Pressure hose; heat-resisting, steel-reinforced fibre glass, 20 ft. long. 
Soap hose; acid resisting. 
FRAME Steel, electric-welded—including tow bar. 
DIMENSIONS Height 37", length 41”, width 21" overall. Steel wheels have large 
2.75'' x 10” semi-pneumatic tires. 
WEIGHT Approximately 250 lbs., crated for shipment. 
PRICE Noss OSU Mewithiveleciricsmotor ai pi. ee site a Ge oleae canes $379.00 
Nios NOSE, wiAidat eectolhaye) (Slarepintas oni ¢acu Onno. baedaa pear 379.00 
Send for detailed circular 
On 
PRICES SUBJECT TO CHANGE WITHOUT NOTICE 
51 
poe 
ly $379.00 F.O.B. Chicago 
