Abstract: A low-cost method of taking sulfur out of coal in stoker furnaces comprising mixing the coal with natural-occurring flue dust from steel-making, pulverized red mud from aluminum-making, of pulverized retort residues from zinc-making, or a pulverized prepared material comprising principally the ferrites and oxides of certain minerals and at least a trace of ferric oxide as a catalyst for accelerating the conversion of sulfur dioxide to sulfur trioxide and heating the mixture in the combustion zone of the furnace in the presence of water vapor from the fuel to form sulfuric acid for oxidizing said natural-occurring or prepared sulfur dioxide absorbent materials into sulfates and precipitating the same along with ash in the fuel to the bottom of the furnace.

Abstract: A cleaning system for sleeve-type air filters featuring top removal of sleeves of the filtering media and increased filtering capacity, using sharply pulsed backflushing air of short duration from a single source for cleaning the sleeves which requires substantially less power and simpler mechanical structure than conventional filters of similar capacity. Filter sleeves depend from clean air outlet ports which are arrayed in concentric rings in a porting plate in closely-spaced relation one from the next at uniform circular and radial pitches allowing more sleeves to be packed in the porting plate which separates the clean air section from the dusty air section of said filter and more capacity from the same size filter than was heretofore possible. A tank is repetitively charged with air to a set pressure by a pump and the pressurized air is released by a pulse generating valve for distribution of the air to said sleeves for backflushing at essentially random frequency.

Abstract: An apparatus for continuous cleansing of industrial liquids which maximizes the floatation and settling of waste out of dirty liquids having submerged introduction of the liquid into a large settling tank followed by upflow into the inlet of a standpipe in said tank, and accelerated upflow of the liquid into a separator pipe wholly within said standpipe followed by downflow from the top of said separator pipe to separate floatable wastes and discharge clean liquid outwardly at the top of said tank.

Abstract: A quick-change system for expediting installation of changes of progressive die tooling on single-acting presses having high slide/bed parallelism and slide-guide accuracy comprising tooling lanes having laterally-projecting tenons cooperating with lock means which mount on the press and in which the tooling is positioned by sliding and is cinched to location by heavily-leveraged means which clamp the tool onto the press using but a single manual operation.

Abstract: This invention relates to punch presses having a transfer die and a work transfer mechanism for advancing individual workpieces progressively through successive tooling stations of such die at high speed comprising dual intermittent-feed transfer bars slidingly mounted for rotary movement and lifting of said workpieces off the tooling stations of said die, and associated clampbars which retain each workpiece on the transfer bars by free retention of the edges of the workpiece during transfer movement, and which transfer bars deposit said workpieces at the next successive tooling station by rotary movement to release the lifting support of each workpiece from below the same and from the free-retention clamping thereof from above in readiness for the next tooling operation.

Abstract: A continuous griddle comprising a cover/hearth plate chain web which transports muffin covers in the forward direction and doubles as hearth plates when inverted and moved in the backward direction, and a cup chain web which transports cup flights in coordinate over/under relation with said cover flights and said hearth flights in both forward and backward directions. Lift tracks under said cover flight cooperate with said cup plate web to lift the cups against the covers to flatten the muffin tops during grilling of the muffin. Cover and cup flight turnover means invert said cups and said covers in coordinate relation one to the other with the muffin contained therein during reversal of direction. Hearth plate lowering and cup flight lift tracks over and under said hearth flights and cup flights cooperate with said cover/hearth plate web and said cup plate web, respectively, to withdraw the muffins from said cups without damage thereto.

Abstract: A cupping tool for use in a double acting press to perform the operations of blanking, drawing and redrawing of sheet stock in predetermined timing sequence to form a cup during each stroke of the press and wherein the successive punching operations of telescoping, draw and redraw punches are governed by means of an automatic punch interlock means wholly enclosed within the body of the tool and actuated by relative movement of the draw punch and the tool body.

Abstract: A table-saw having dual guards, one being that for the saw to run the guard must always be in correct vertical and horizontal operating position covering the whirling saw blade, and the other being that the saw is automatically shut off after a waiting period in the event that the operator is not actually working at a sawing operation. There is a manual over-ride switch for hard-to-do jobs subject to the security of lock and key.

Abstract: A method and an apparatus for increasing the combustion flame temperature of a partially-aerated atmospheric gas burner heater and the heat transfer therefrom by the injection of jets of preheated secondary air into the combusting chamber transiting the flow of burning gases thereof.

Abstract: A display device blanked-out from a single piece of flat stock and adapted to be folded on score lines to provide a three dimensional structure generally flat comprising a base member adapted for attachment to a freezer rail or other suitable support means and to present a support arm extending outwardly therefrom to carry an integral tag having a large display area held in the line of sight of a person standing in front of the support means.

Abstract: A fan having a single degree of freedom to torsionally oscillate in a horizontal plane which in one version oscillates about a fixed vertical axis, self-excited by an aerodynamic couple created by feathering vertically disposed vanes which are symmetrically located adjacent the tips of the fan blades on the air inflow side thereof, and in another version which oscillates about a pendulous axis, self-excited by precession of the rotating fan and motor armature as a pendulous gyro.