Патент USA US2131041код для вставки
Patented ‘Sept.’ 27, 1938 _ I UNITED STATES PATENT OFFICE I i géglgmo coMrosi George ?nale, liover, N. .I. No Drawing.’ Application April 10, 1936, Serial No. 73,768 1 (01- (5377-24) ' (Grahams the act otrMarch- 3, last. as amended sun so, 1928; 370 o. G. my ,_'I'he invention described herein maybe nianu- which include amongothers, sodium, potassium, factured and used by or for the Government for . barium and strontium, produce gas and intensify governmental purposes, without the payment ‘to me of any royalty thereon. > 6 the light. ‘ ' Examples of non-explosive pyrotechnic compo This ‘invention relates to a non-explosive pyro, technic composition. _ ' One‘ or the disadvantages of the various com- sitions prepared in accordance with the invention 5 herein set forth are as follows, the proportions being by weight: positions in general use for pyroteehniepurposes is the explosion hazard which exists in the manu' l0 facture and use of such‘ materials. This explo- ' sion hazardis largely due to the fact that the “ ‘ - 1‘ ' 20 iactoryvpyrotechnic composition but must have incorporated with them a gaseous forming sub- :tgggxhich brings the mixture within the class> 25 gaseous The present forming invention substances resides mayinbethe mixed fact with that substances which upon combustion unite to form‘ 55 Sulphur. . compositions have not come into general use for the reason that they alone do not make a satis- Per cent 5 2. Barium chromate___________________ __ 68-70 Magnesium _______________________ _‘__ 25-27 While it has been suggested that pyrotechnic , compositions be made of ingredients which, upon combustion, produce solids instead of gases, such > Magnesium , 30 1o Barium nitrate ________________________ __ 10 . materials when mixed are sensitive to shock and geiilmizgnsgtand' the ordinary drop tests without ' 1. Iron oxide sodium nitmfp Linseed n" - _ . 3 l6 2 3- strontium chromate___________________ .. 53 I Magnesium ‘ 40 Strontium nitrate _____________________ __ - Castor oil - 5 '0 2 4_ Potassium bmhmmate ___; _____________ __ 30 ?ggggs?npemxide strontium resinate ____________________ """"""""""" __ " ‘15 25 _ r _ solids to form ef?cient and satisfactory pyrotechnic compositions for long burning signal lights qf high candle power while maintaining 30 the non-explosive character of the composition. , In carrying out the invention a‘mixture is pre- As may be ‘readily Seen from the examples given above a binder may be used with the mixtures when deemed necessary or desirable. DI'OD- tests have Shown that when more the-n so 25% by Weight of the gas producing element 01‘ pared which consists; ?rst, of an oxide or a chromate or both as the oxidizing component of the mixture, second, of one or more metals which are 35 adapted tolreact with the oxides and chromates to form solid compounds, third,‘ of 9. light in- ’ elements is present in the mixture they are ex plosive. This test is the usual one of subjecting a specimen of the mixture to the blow delivered by e- 2 kg- Weight falling freely from a Stated height. ‘5 tensi?er which yields gas upon combustion. I claim! ‘ These substances are so proportioned that the gas yielding substance or substances will not exceed A pyrotechnic composition including a metallic oxidizing agent selected from the class consisting 40 twenty-?ve percent by weight of the whole. Upon reaction of the ingredients mentioned in the last paragraph the oxygen as given o? by the of chromates and oxides, a metallic fuel adapted to react with the oxidizing agent to form a solid, and a gas-forming and light-intensifying alkali oxides or chromates combines with the metal or alkaline earth compound selected from the 45 magnesium selected from to form the compounds a solid, whileofthethe constituents alkali'or amount class consisting less than of nitrates, twenty-?ve andper resinates, cent ofin the an alkaline earth elements of Groups I and II of the Periodic Table of chemical elements and whole. ’ 1 ' ‘5 GEORGE C. HALE.