Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1977-03-24
1980-07-29
Makay, Albert J.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
34155, 34160, 74412R, 74421R, 226189, F26B 1308
Patent
active
042143799
ABSTRACT:
A dryer rack for automatic film developing machines, which is remarkably simple in construction and easy to maintain, which is highly efficient, and which dries the film quickly, thoroughly and with remarkable freedom from blemishes.
Gear driven transport rollers arranged in a staggered pattern carry the film through the rack along a sinuous path. The rollers are thinner, more closely spaced and more numerous than in conventional dryer racks. Low-pressure, high-volume fans blow air directly onto the rollers without using air distribution tubes. The rollers themselves form air jets which distribute the drying air flow advantageously over the film surfaces.
This rack, with its numerous gear driven transport rollers, is powered by a series of large power transmitting gears positioned along the rack, from which power is tapped off by smaller diameter coaxial gears. The latter in turn drive clusters of the roller drive gears. This highly efficient and extremely smooth operating gear system makes practical the use of the desired large numbers of closely spaced thin transport rollers, without requiring excessive driving power and without causing uneven roller movement harmful to the photographic emulsion. This, in conjunction with the exceptionally favorable air flow patterns which prevail in this rack using thin, staggered rollers, produces exceptionally rapid and blemish-free film drying.
REFERENCES:
patent: 2070483 (1937-02-01), Hurxthal
patent: 2640277 (1953-06-01), Dungler
patent: 3073590 (1963-01-01), Romeo et al.
patent: 3147090 (1964-09-01), Russell et al.
patent: 3366025 (1968-01-01), Layne
patent: 3405456 (1968-10-01), Shepherd
patent: 3434225 (1969-03-01), Knibiehly
patent: 3834040 (1974-09-01), Russell et al.
Hope Henry F.
Hope Stephen F.
Joyce Harold
Makay Albert J.
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