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|  MIL-W-43001F
3.5.2.6 Cylinder. The cylinders construction shall be either welded or
welded and riveted corrosion-resistant metal specified in 3.4.1, except that the
driving shaft or trunion and spider shall be of stainless steel or ferrous metal
protected by a corrosion-resistant coating. The thickness of the metal sheets
shall be not less than 0.078 inch for the size 25-pound machine and not less
than 0.100 inches for the remaining q achines except for size 25- and 50-pound
machines, the use of embossed or band reinforced sheets not less than 0.057 inch
will be permitted. The cylinder construction shall be such as to prevent
distortion or failure due to stresses created when operating during the extrac-
tion cycle at rated capacity. This requirement shall be verified when the
equipment is tested as specified in 4.6.2. Cylinder sheets shall be perforated
so as to allow free flow of water through the sheet.
3.5.2.6.1 Lifting ribs. Cylinders of one compartment machines shall contain
three or more lifting ribs not less than 3 inches high for the size 25-pound
machine and not less than 4 inches high for the size 50-pound machine. Lifting
ribs of single compartment machines in excess of 50-pound capacity shall be in
the quantity and size as the manufacturers standard commercial item for the size
equipment specified. The lifting ribs shall be of the same type of material as
the cylinder side sheets.
3.5.2.6.2 Partitions (divided cylinder machines only). The cylinders of
divided cylinder machines shall be provided with partitions of corrosion-
resistant metal not less than 0.086 inch thick and suitably reinforced.
3.5.2.7 Cylinder doors.
3.5.2.7.1 Cylinder doors (end-loading only). The cylinder of divided
cylinder end-loading washer-extractors shall be provided with a minimum of one
hinged door for each compartment. The doors shall be of corrosion-resistant
metal and shall form a part of the front cylinder head. Door and door hinge
construction shall not be affected by stresses during operating cycles, Means
shall be provided to prevent garments from falling between the cylinder and
shell during loading and unloading.
3.5.2.7.2 Cylinder doors (side-loading machines only). The cylinder of
divided cylinder side-loading washer-extractors shall be provided with one, two
or three hinged doors or one sliding door for each compartment. The doors shall
be of corrosion-resistant metal and designed to withstand the high stresses
encountered during extraction under full load. This requirement shall be
verified when the equipment is tested as specified in 4.6.2. Each door shall be
provided with a locking device that can be opened by hand without a special
tool, wrench, or bar. Safety devices shall be provided to prevent the doors
from opening while the machine is running, These requirements shall be verified
when the equipment is tested as specified in 4.6.1. Hinges and locking and
safety devices shall be of corrosion-resisting metal and readily replaceable.
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