The Omaha guide., 1935-08-31
Newest t. Science

two
at
A five horsepower motor weighing
five pounds has been developed for I
flying airplanes or keeping gliders "
aloft without aid Of air currents vi
An exerciser to develop hand mus =
cles invented in England consists of use
a strip of spring metal bent into /,
loops and having leather grips at the
ends. -
Photographic equipment has been ~,
developed BY an a~irplanes building
company to accurately determine the
landing speed and gliding angles of
its planes.
- pet
The central German government wa
will assume control of all mining
rights and administration of mining, {
heretofore a perogative Of the in
dividual states.
bel
Nails with barbed points have been
invented that hold tighter in wood I
the longer they remain because of for
the changes in the moisture content oob
ars
After studying the flight of insects
an Austrian scientist is building an ]
airplane that he expects to propel IA
with pulsating wings instead Of a ],
propeller.
Mounted on two pneumatic tired ,
wheels, a gasoline powered air COM In
pressor has been designed that can mn
be towed like a trailer behind a
passenger automobile. :
The Esthonian government is en- he'
forcing the use of the official geo. jec
graphic names for its cities by re- str
jecting from the mails all matter
bearing other names.
Folding ceIIuloid arms that OPP q
crate pointers on a scale make lp a the
new instrument for measuring roof are
and other building angles from photo
graphs or drawings.
A London railway has constructed 4
2 turntable that is revOlved BY a nc
single wheel compressed air tractor eaC
operated by air from the brake lines
Of locomotives.
World absorption Of crude rubber
in the first four months this year de- lns
creased to $4,000 long tones, COM ma
pared with last years figure Of
337, 900 long tons
France is obliged to import about
go per cent Of the raw wool it man Y
u4actures into textiles, most of it. gat
coming directly from Southern Hem ate
tsphere countries.
More than 10000 900 copies Of
patents granted by the United States
and about 978,OOO photostats Of bio
foreign patents are sold BY the Pat Ne
ent office annually. tiol
Inteslocking metal bars attached /
to one another with hooks have been
invented in the Netherlands to save n'
time in erecting and dismantling hul
temporary buildings. we
= wit
A post hole digger has been in
vented that produces a cone shaped !
hole larger at the bottom than top
to hold more concrete when that al
material is used about posts fla
English surveyors are drawing ito
maps and plans that they desire TO
keep indefinitely on sheets Of alum
inum, which neither shrink nor ex-
pand as do drawings on paper. abb
" rae
For protection OF pedestrians on to
country r4ads at night a handled -nul
mirror has been invented to be car
ried to reflect light from automo-
bile headlights to warn drivers.
= a L
Germans have discovered a pro- II {
cess for removing the carbon mon car
oxide from heating and Illuminating inc
gas and the homes in one town are
being supplied with non-poisonous
gas.
# vel
Extension hinges nave been in sci
vented to project easement windows fro
clear of their frames so that both h
sides of the glass can be cleaned by
a person standing inside a house.