Example of Photographic Documentation of a Mill, Black & White Photos of the Machinery of Diller-Heishman's Mill, Carlisle, Pennsylvania, Photo #5.
Photo Number: #5. Floor Number-Item Number: 3/7. (See: Floor Level 3. Third Floor Plan.) Items in Photo: Reduction level sifter. William F. Foshag (mill owner) standing behind flour sifter. Where is Bill? Provenance - Manufacturer (if known): Wolf Company, Chambersburg, Pennsylvania. Dimensions, Yield, Capacity, Output, and Additional Information: Size F-8-48 (245) , No. 477. Catalog Documentation: "Flour Mill Machinery (Corn, Feed, Cereal, and Alfalfa), Flour, Corn, Cereal, and Feed Mill Machinery, Complete Accessories, The Wolf Company (Established 1879, "Complete Modern Mill Builders and Engineers"), Chambersburg, Pennsylvania. U. S. A., 1922.
Atmospheric pressure and humidity have a decided effect upon the consistency of flour stocks. Hot, humid weather makes the stock harder to bolt because of its seemingly heavier, clammy, sticky nature. Cold, dry atmosphere has the opposite effect. The Level Sifter system of bolting is easily adapted to the various fluctuations of weather conditions. Increasing the supply of beans and wheat hastens bolting; diminishing the supply, bolting is retarded. thus any rate of bolting is easily and quickly regulated. But even with this accurate regulation, there is absolutely no idle sieve surface. Every square inch of cloth is covered by a moving stream and the zig-zag distance is too short to permit the heavier stock to separate from the lighter, therefore, a full even stream spreads out on the cloth. Unquestionably, this sieve area is greater, the bolting capacity larger in proportion to the floor space than any other sifter made. With the Level Sifter we use Two Methods of transmitting the power from the line shaft to the sifter drive. Both methods are worthy of serious consideration and we recommend that the section of the method of transmitting the power be left to the judgment of our Engineers. Local conditions and the exact work required should be considered. Eight Reduction Level Sifter Drawings:
Drawing Number One: Top View of Level Sifter. This view of the Level Sifter shows the appearance of the Double Idler Transmission Drive, the arrangement of the sieves, and the interior view of the sieve case (top sieve removed - on the left) as seen from above. The larger machines are always built with the silent angle, - geared transmissions. Customer has choice of drives for the smaller sizes. Sieve case is the same with either drive.
Drawing Number Two: Bottom View of Level Sifter. As seen from below, this view shows the appearance of the Double Idler Transmission Drive, the belt guide pulleys used only on the smallest machines, reed clamps, and arrangement of flour and tailings outlets.
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