the 1920s, the Pfaudler Company and General American Car Company manufactured
hundreds of 40' wood sheathed, insulated milk cars. Designed as bulk milk carriers,
the cars were built around two 6,000 gallon glass lined tanks and a brine cooling
system, designed to keep the milk at a constant 38 degrees Fahrenheit. Riding
on passenger car trucks, these unique wood sided cars were often painted Pullman
green to match the color of the most common passenger cars of the era. These specialty
cars hauled bulk milk into the early 1950s .
In 1932, Pfaudler and General American merged and became the General American
Pfaudler Corporation. Reporting marks became G.P.E.X. instead of the earlier G.A.R.E.
of General American.
According to the General American Car Company brochure
of 1928 these cars are used for:
Transporting whole sweet milk from
country receiving plants to city distribution plants.
milk from feeder plants to main condensing plants for finishing
off the product.
Shipping sweet cream from rich dairying sections
to the metropolitan markets.
Transporting ice cream mix
from the milk producing regions to the city plants for freezing.
skim milk from country plants to various users.
American cited a number of advantages that this design had over the traditional
milk can cars:Loading Advantages and Savings
Milk is loaded
directly from the cooler to the car through sanitary piping.
Avoids spillage which is incurred in can shipping.
Elimination of cans reduces investment.
Labor is reduced in
every step of loading and unloading . . . .
No icing is necessary,
eliminating cost of ice and labor.
One refrigerator milk car has a
capacity equal to three of the usual milk can cars.
due to frozen milk adhering to sides of cans in severe winter weather.
There is approximately one fifth the surface in a refrigerator milk car as compared
to cans required to carry a like amount.
Consequently, the adherage of milk
in refrigerator cars is but a negligible fraction of the usual loss in cans.
Quality and Safety
Authorities agree that glass lined receptacles are
ideal for storing or shipping human foods. Quality is maintained.
count is controlled, not merely influenced as under the old transportation methods.
Average variation of temperature of milk in transit, has been negligible
during periods as great as one hundred hours under the most severe climatic conditions.
Dairy products can be shipped distances many times
greater than under the old methods.
Dairying regions are benefited
because the output of the producers is maintained at higher quality in shipment
and this is reflected in their financial returns.
Because of the money
savings and improvement in quality of product through use of the refrigerator
milk car, the dairy industry profits. The benefits are cumulative.
most interesting and informative article on milk cars was written by Bob Schleicher
and published in the August 2005 issue of "Railmodel Journal" magazine.
assembled and ready to operate
applied brake wheel
mounted trucks for accurate tracking
mounted magnetically operated knuckle couplers