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This short nonfiction film depicts the intensive testing that goes into developing and producing aircraft propellers. It opens with the whirring or propeller blades. Animated diagrams show how the bite of the propeller moves it through the air and how the pitch determines the size of the bite. A trip through an airplane factory shows the manufacture of a satisfactory alloy. The rest of the process is painstaking hand work interspersed with dozens of careful inspections. The operation of the variable pitch mechanism and its use in taking off and cruising is shown. Then the propeller is assembled the complete job is tested for balance.
United States. Department of Agriculture, United States. Department of Agriculture. Forest Service
Summary:
Introduced as "the story of cattle grazing in the national forest," the film depicts cooperation between the Forest Service and local ranchers to manage the grazing of herds on public land. Original USDA catalog entry states: "Range management in the western national forests. Shows how to perpetuate grazing lands by protecting them from overuse by livestock and thus insure the income of ranchers and communities dependent on the livestock and grazing industry for a living" (Motion Pictures of the United States Department of Agriculture, 1945, 41). Depicts rounding up, branding and inoculating cattle in preparation for driving from private range land to National Forest. Shows duties of Forest Rangers, including monitoring fences and health of grasses. Cutting, raking and stacking of hay using mostly horse-drawn implements is shown. Concludes by showing that U.S. Forest Service range management has helped western "cow towns" to prosper and grow.
United States. Department of Agriculture. Bureau of Entomology and Plant Quarantine
Summary:
A presentation of the Bureau of Entomology and Plant Quarantine's code for the prevention of termite infestation. Using animated diagrams and detailed photography of actual termite infestations, the film educates builders and homeowners in inspection, remediation and prevention methods. Poor construction practices invite the ravages of these devastating insects. The film shows how buildings can be protected from further damage and points to be observed undertaking new construction. "It costs us 50 million dollars a year to feed the termites, it costs far less to block them," concludes the narrator.
"Short fictional film asking people to keep under cover during air raids. A group of English and Canadian fighter pilots report the number of German planes they have each shot down. The rivalry between the British and Canadian pilots is intense and later in the pilot's hut one of the English pilots is asked why he did not "kill" a German plane when he had the chance. He replies that the problem was "Goofer trouble". "Goofers" are seen leaving a shelter to watch a dog fight. Because these "Goofers" were in the street the pilot could not open fire without running the risk of hitting them."--British Film Institute website.