Evening star. [volume] (Washington, D.C.) 1854-1972, 1909-07-31
HURRAH! LET'S ALL KEEP COOL!
DR.. MANNING 1NVENTS A TEN
MISUNDERSTANDING DEVICE.
Is Simple, Doesn't Cost Much, Isn't
Patented and Works Like
Charm-Try It!

An air-cooling device which can reduce
the temperature in an apartment twelve
degrees in a few minutes has been per-
fected by DIR. William ]. Manning, medical
and sanitary officer of the government
printing Office. DIR. Manning is not seeking
commercial advantage from his invention,
but proposes Its free use for the benefit
of humanity. He has already gained
prominence in the United States and
abroad for other inventions designed to
promote health and prevent suffering, and
has received premiums and honorable
mention from foreign governments.
His latest device for rapidly lowering
the temperature Of the air has been erect
ed in the emergency hospital at the gov
eminent printing Office, which institution
is also of his creation. Daily demOnstra-
lions of the simple and inexpensive de-
vice are made. During the past three
days when the mercury in the thermome-
tiers was soaring well up to the 100 mark
and humanity sweltered in the grasp of
the hot wave, the temperature in the lit
tie hospital at the printery was reduced
by the Manning method to q degree of
comfort.
Great Thing for the Dog Days.
Those who have seen the device demon
strated say it will be a great boon for
hospital wards, crowded workrooms In
factories, offices and other places where
men and women toll. DIR. Manning will
not patent the device. and any one may
use 1t.
The cooling apparatus is based on the
principle of the cooling effects Of the
evaporation of water. Suspended from
the government printing office is a strip
of cotton twill in vertical plane three
feet wide and forty feet in length.
Through a hem in the upper edge he has
run tube one inch in diameter and
perforated on the bottom with holes one
inch apart and one-eighth of an inch in
diameter. At the lower edge Of this strip
of cloth is a metal trough. Connecting
the tube with the water faucet by means
of common rubber hose, water is passed
through, and. percOlating through the
holes, trickles down through the fbers
of the cloth, thoroughly saturating 1t in
a few moments. The trough is inclined
slightly, and the flow from the cloth is
run off through an outlet at the lower
end. Thus a moist area of great extent
is produced. and all that is necessary is
to induce rapid evaporation.
Simple and inexpensive.
This is accomplished by DR.. Manning
by means of two electric fans, one al
each end of the strip. AS these are set
in motion the cloth screen, saturate ed
with water rapidly vibrates and ripples
and waves in the breeze created by the
fans. Thus the water Is quickly evap-
Grated, and as the flow is continuous the
process of cooling goes on without inter-
ruption.
The installation of the device can be
accomplished at small cost, the materials
being inexpensive and the work of con-
struction simple. Public Printer Donnelly
has inspected the device. and it may
be installed in the printery for the COM
fort and health of the thousands of en-
ployes. DR.. Manning says he will he glad
to demonstrate his invention for any one
who is interested.