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Aug 01, 1924 |
"Micarta" propellers
F.W. Caldwell ad O. Clay describe the design, materials,
and method of construction of "Micarta" propellers.
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Mar 23, 1928 |
Adhesion with vinyl compounds
J.F. Walsh and A.F. Caprio, Celluloid Corporation, place
unpolymerized or partially polymerized vinyl compounds
between two surfaces and produce adhesion by polymerizing
with suitable catalysts.
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Nov 02, 1928 |
Adhesives for safety glass manufactures
A process is developed by British Celanese, Ltd., in which
phenol or creosol-formaldehyde resins are modified with
cellulose esters, acetate, and nitrate, as well as a
plasticizer. The process is useful in the preparation of
adhesives for safety glass manufactures.
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1929 |
Age-hardening of duralumin
M.L.V. Gaylor and G.D. Preston ascribe age-hardening of
duralumin to the distortion of the space lattice caused by
precipitation of highly dispersed particles. The
precipitation involves the resection of the atoms of the
dissolved metal from the lattice of the solid solution
(possibly with formation of molecules) and the coagulation
of the rejected atoms or molecules.
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Jul 10, 1917 |
Aircraft construction fabric
H. Dreyfus develops a transparent fabric for use in the
construction
of aircraft, etc., comprising cellulose acetate reinforced
with a
metallic fabric of some kind, preferably a mesh.
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May 15, 1919 |
Airplane non-conducting flexible fabric developed
N.A.T.N. Feary develops an airplane non-conducting flexible
fabric
provided with an electrically depositied metallic coating
for
fireproofing and strengthening. The fabric is saturated in
boiling
linseed oil under pressure, dried, coated with plumbago,
and passed in
contact with conductors through a copper sulphate solution.
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Nov 08, 1927 |
Airplane panel material
W.A. Wirz, British Celanese, Ltd., develops a process
whereby perforated sheet-metal plates are placed between
sheets of a cellulose acetate compound which penetrates the
perforations of the metal after heat and pressure are
applied to produce an airplane panel material.
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1927 |
Alclad announced
E.H. Dix, Jr. of Alcoa makes the first public announcement
of Alclad, a new corrosion resistant aluminum product.
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Mar 28, 1924 |
Alkali halides can be made to behave ductilely
A. Joffe et al. show that normally brittle alkali halides
can be made to behave in a ductile manner by immersion of
the crystals in warm water while they are being loaded.
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Aug 06, 1957 |
Alkyl ethers developed as jet-turbine lubricants
N.W. Furby, J.M. Stokely, and E.G. Foehr develop alkyl
ethers derived from polyalkylene glycols for use as jet-
turbine lubricants.
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Aug 16, 1921 |
Alloy with specific gravity less than 2.7 described
A. Pacz describes an alloy series from which machinable
castings
having a specific gravity of less than 2.7 can be formed,
consisting
of 8-20% silicon and 92-80% aluminum.
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1923 |
Alloys studied by X-ray diffraction
While studying alloys, particularly solid solutions, by
means of X-ray diffraction, E.C. Bain discovers
superlattices, demonstrating the maintenance of the solvent-
lattice type in primary solid solutions and the variation
of the lattice spacing with variation in solute
concentrations.
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Dec 01, 1919 |
Alpha iron is body-centered cubic
A.W. Hull shows the lattice of alpha iron to be body-
centered cubic.
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Dec 28, 1926 |
Aluminum-copper-nickel alloy produced
W.A. Mudge, International Nickel, produces an aluminum-
copper-nickel alloy by adding an aluminum alloy such as 35-
85% aluminum, 45-10% nickel, 20-5% copper to a molten bath
consisting mainly of copper and nickel.
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1983 |
Amorphous rather than crystalline state favors ion conductivity
C. Berthier, W. Gorecki, M. Minier, MB Armand, J.M.
Chabagno and P. Rignaud, Solid State Ionics, 11 (1983) 91
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Apr 23, 1929 |
An acid resistant alloy patented
F.M. Becket assigns a patent to the Electro Metallurgical
Company for an acid resistant alloy of at least 40% nickel,
15-40% molybdenum, and iron not less than 10% nor more than
5 times the amount by which the molybdenum percentage
exceeds 10.
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Dec 27, 1927 |
An adhesive suitable for use on metals
F.S. Malm describes an adhesive, consisting of rubber,
rosin, rosin oil, and a fibrous filler including asbestos,
which is suitable for use on metals.
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Jan 29, 1927 |
Aniline-formaldehyde condensation products
Aniline-formaldehyde condensation products, formed in
presence of acid, are treated with a base to eliminate
acid. The result is a homogeneous, easily-worked product
which can be dried and compressed in molds. (Soc. Anon.
pour l'Ind. chim. a Bale)
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Jan 21, 1927 |
Anilineformaldehyde resin condensation products are densified
Porous masses of anilineformaldehyde resin condensation
products are densified by the use of heat and pressure.
(Soc. Anon. pour l'Ind. chim. A Bale)
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Aug 20, 1923 |
Artificial resins are used as adhesives
Artificial resins obtained by the polymeriztion of
aldehydes are used as adhesives or cements, either alone,
in solution, or mixed with other filling material.
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