This invention comprises a photographic element comprising at least one light-sensitive silver halide emulsion layer containing a fragmentable electron donating compound of the formula: X--Y' or a compound which contains a moiety of the formula --X--Y'; wherein X is an electron donor moiety, Y' is a leaving proton H or a leaving group Y, with the proviso that if Y' is a proton, a base, .beta..sup.-, is present in the emulsion layer, and wherein: 1) X--Y' has an oxidation potential between 0 and ...

An aqueous solution of melamine formaldehyde condensation product is sprayed over dry cement product in the fine grinding compartment of a cement grinding mill at a uniform rate essentially throughout the grinding process in concentration and amount chosen to evaporate all the aqueous solvent during the normal cement grinding process and introduce an aggregate of 0.1 to 2.0 weight per cent of condensation product solid in relation to the dry cement product being ground.

The disclosure is of a transportation system which includes an elongated guidebeam having three spaced apart running surfaces. Two of the running surfaces as substantially vertical to accommodate wheels rotating about vertical axles and the third running surface is substantially horizontal to accomodate wheels rotating on horizontal axles. Wheels which rotate on a normally vertical axle and wheels which rotate on a normally horizontal axle are connected to a rack which is adapted to move along t...

A photographic material is provided having a layer support backed on both sides with polyolefine and having at least one layer of a light sensitive silver halide gelatine emulsion layer thereon. The rear surface of the support having thereon a water impermeable layer containing a major proportion of a water insoluble binder and minor proportions of an antistatic agent and an inorganic or organic matting agent.

A dishwasher with an improved spray apparatus is provided. The dishwasher includes a washing tub having an upper and a lower dish rack supported therein. The spray system for the dishwasher includes a first spray member positioned below the lower rack for spraying liquid from a lower elevation to the lower rack, a second spray member positioned intermediate the upper and lower racks for spraying liquids from a higher elevation to the lower rack and from a lower elevation to the upper rack; and a...

A coin slide assembly in which an upper assembly and a lower assembly releasably connected together define a guide passage for the movement of a coin slide, and the movement of the coin slide, without the proper coin combination inserted, beyond a limit is prevented by a blocking means that inserts an obstruction into the guide passage. The blocking means is responsive to the presence of the proper coin combination inserted in the coin slide to remove the obstruction from the guide passage and t...

A photo flashlamp containing an improved metallic combustible foil composite comprising a layer of a pyrophoric metal, for example, yttrium, interposed between two layers of nonpyrophoric metal, wherein nonpyrophoric metals such as aluminum, hafnium, magnesium or the like may be used. A method for making a metallic combustible foil composite comprising depositing, in a vacuum chamber, a layer of pyrophoric metal on a layer of combustible nonpyrophoric metal and then depositing a layer of combust...

Apparatus for sanding or otherwise removing material from the rear surface of an ornamented frame, panel or the like to make said rear surface plane and flat. The feed works for the work pieces comprise a multiplicity of individually mounted feeding and holddown members adapted to engage the front, ornamented face of the work piece and feed the rear surface into contact with a sanding drum or the like.

An electric fuse structure comprising a generally tubular electrically insulating or dielectric casing in which a fusible element is disposed and which is substantially filled with a finely divided or pulverulent arc extinguishing material, such as quartz sand. The casing is coated on its inner surface with a thin layer of ceramic electrically insulating material. The ceramic material hardens in place to form a relatively thin insulating liner.

A polyester or polypropylene polymer containing a halogenated aromatic carboxylic acid ester. The polymers prepared in this manner exhibit improved flame retardant properties.