Rivets, expl

The expl rivets, invented about 1940, are great time savers and can be used anywhere Essentially the expl rivet is an ordinary rivet having a cavity in the end opposite to the rivet head. The cavity is filled with a small quantity of expl of the initiating type. The rivet (or other fastening device like, bolt,... [Pg.315]

The most convenient method of ignition, however, seems to be by means of an electrical conductor introduced into the cavity of rivet (or other connector element, such as bolt, bar, pin rod, etc), and connected to a source of relatively high voltage electricity. The inserted conductor is insulated except at its terminal point. With this conductor sufficiently close to the bottom of the rivet cavity in the vicinity of the expl chge, the circuit may be closed by throwing of a... [Pg.316]

Note Although most of these expls can be detonated by static charges such as can be accumulated by human bodies, there is no danger of using these expls in metallic rivets. As these rivets are good conductors, no static accumulation is possible in the vicinity of the... [Pg.317]

With these charges densities of 1.6 to 1.9 g/cc can be satisfactorily used. The amt of expl chge for optimum results will depend on cue nature of the expl, the size of the rivet, and the material of which the rivet is constructed-. For example, with an A river having a recess of 0.1 inch diameter,a 0,4 grain of LA-LSt would be satisfactory while with. larger rivets and the increased size of cavity, as much as 4 grains might be required... [Pg.317]

Improved method of firing the expl charge in expl rivets) 5)L.A.Burrows,... [Pg.317]

USP 2387742 (1945)[Several novel types of expl rivets are described. Application of the principle of using expls not only to expl rivets, but to any expl metal connecting element (such as bolts, bars, pins rods) for fastening one or more articles. Also a list of expl compns used in expl rivets is given] 6)L.A-Bu rrow c... [Pg.317]

USP 2410047 (1946) (Various expl rivets and other explosively blasting joints) 8)F.F.Huston et al, USP 2412886 and 2412887 (1945) (Application of the principle of expl rivets in the construction of locomotive boilers. It is claimed that completely fluid-tight joints may be produced by expanding the ends of stay bolts thru the use of expl chges) 9)L.A.Burrows W.E. [Pg.318]

E=R.von Hers, Expiosivstoffe 1954, 29-38 (Expl rivet called in Ger Sprengniet contained Hexanitromannitol 25, Tetracene 10 Al powder 65%. Several figs are included in paper)... [Pg.318]

CA 49, 10628 (1955) (Compns used in expl rivets Diasodinitrophenol 60 and Tetracene 40% Diazuuifiicrophenol 60, Tetracene 20, and Hexogen or Nitroguanidine 20%. Oxidizing agents such.as KCIO3 or KNO may be added)... [Pg.318]

A.H.Holtzman G.R.Cowan, Ordn 50,536, March-April 1966 (Explosive rivets were introduced in 1940 for fastening purposes particularly for the aircraft industry. Early expl rivets for aircraft were made of Al more recently, high temp alloys such.as Inconel X have been employed)... [Pg.318]

Uses Can be used in detonators when initiated by another primary expl and functioning as an intermediate booster or when mixed with another primary exp to increase the sensitivity of the latter to flame or heat. Its mixture with LA was patented by Dynamit AG (Ref 8) for use in explosive rivets. Tetracene can also be used in primer caps where as little as 2% in the compn results in improved uniformity of percussion sensitivity... [Pg.812]

Only one of the acetylides(cuprous acetylide) has found application in industry as an ingredient of electric detonators. Some acetylides, as for instance, that of silver, arc probably suitable for use in primers and detonators. They also may be incorporated in LA-based compositions for expl rivets in order to reduce their ignition point(Ref 6) According to Sax(Ref 6) the toxicity of acetylides is unknown, but their expln hazards are considered to be the same as those of fulminates and azides. The acetylides must be handled with extreme care and In storage they must be kept cool and wet. Metal powders, such as finely divided Cu or Ag, should be excluded. Shipping regulations are the same as for other primary and initiating explosives Refs l)Beil 1,238-40,(104 6),[217-20] ... [Pg.70]

Expl rivets or other fastening devices 6 E442-E445... [Pg.621]

USP 2295075(1942)(Elec heating device for expl rivets) 16)L.A.Burrows, CanP 411441... [Pg.363]

L.A.Burrows, USP 2388901(1945)(Heating device operated like a gasoline torch for expl rivets) 24)DuPont Co L.A.Burrows, BritP 568109(1945) CA 41, 2900(1947)(Initiating compns produced by mixing DADNPh with nitrated polyhydric ales, such as HNMnt, and a solvent miscible with HaO in which DADNPh is insol HNMnt is sol) 25)DuPont Co, L.A. Burrows et al, BritP 572056(1945) CA 41,... [Pg.363]

Tetracene is used in priming compns and cover charges for initiating agents less easy to ignite. A mixt of Pb Azide and Tetracene is satisfactorily used for charges in expl rivets. [Pg.488]

Burrows and collaborators of DuPontCo, patented numerous mixtures for use in expl rivets which were suitable for use in expl bolts, bars, pins and rods. It was claimed that expls used in expl rivets, or similar devices, should possess a velocity of detonation above lOOOm/sec. To these belong MF,... [Pg.317]

Portable heating device for firing expl rivets) 4)L.A.Burrows et al, USP 2327763 (1943) (Improved method of firing the expl charge in expl rivets) 5)L.A.Burrows,... [Pg.317]

USP 2388901 (1945) (Heating device, resembling torch used by welders, for ignition of expls in rivets) 7)L.A.Burrows W.E.Lawson,... [Pg.318]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...