That shaft turned, through pair bevel-gears, pulley grooved to
accommodate round leather belt. Eight frame castings are sitting the floor next a
milling machine figure 106. Presumably, many
of these parts have just been polished the speed lathe the background. The outside
surface the handwheels are smoothed off and the shaft hole bored out a
lathe. Additional
tables, handwheels, pulleys, and other parts for the remaining presses are lined
up the bench between the sawhorses and the motor stand. Unfortunately, the E-card simply lists "Arbor
Press.Searching for this sort interpretatively comprehensive project laudable
quest.
Sadly, have been unable determine the purpose these presses. The ram hollow and has rotating shaft the inside.
Similar pans are shown 1911 photograph the plant Silver Lake, being
used manufacture nickel hydrate and iron oxide for storage batteries. Figure 108 shows the assembly station near the
back the shop with three presses nearing completion.
Work progress, visible the 1914 photos, includes seven large (3-1/2 feet in
diameter) cast-iron pans castors. (One these
devices survived Building least through 1939, and appears photo 8070
of the inventory E-4536.")
Despite all these ambiguities, may worth doing additional research these
curious little presses, not because they are significant examples Edison
manufacture, then because reproducing them would allow demonstration wide
variety machine operations comparatively simple object. Unfortunately, research for the machine shop furnishings plan did not
reveal the perfect candidate. These appear having the edges and
mating surfaces their top flanges and lids surfaced the Niles boring mill. Their rack gear teeth could cut either
844 Photograph Album 10, catalog 5209, leaf 75,
274
. Each the castiron
frames carries vertical cylindrical steel ram. Both the presses the right side the
photo are fitted with circular tables and four clamps brackets.644
Parts for specialized presses can seen, various stages completion,
throughout the shop. The hollow rams
are bored out and turned lathe. The ram has teeth cut its back
edge, forming rack gear that engages pinion gear the horizontal shaft
driven handwheel. Rough frame
castings have have their bases milled flat milling machine and shaftways
bored out and spot faced drill press, lathe, boring mill. The keyway that secures the shaft cut shaper. The frame,
ram, and handwheel resemble those ordinary light-duty arbor presses. The
circular table about the same size Edison diamond disc, but its purpose,
and that the clamps and rotating spindle, remains mystery
