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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4346095 | Therapeutic treatment for viral hepatitis infection The administration internally to humans of 1-(B-hydroxethyl)-2-methyl-5-nitromidazole, (metronidazole) in a dosage range for adult humans of about 31 to 2,500 mgs per twenty-four hour period, is an effective therapeutic treatment for certain viral infecti... | 08/24/1982 |
| 4339859 | Wire spoke automotive wheel manufacturing method A wire spoke, non-suspension type, automotive wheel is provided in which spokes are operably untensioned prior to vehicle loads being placed upon the wheel. An outer tubeless tire rim with a drop center is mounted to a wheel center. The wheel center inclu... | 07/20/1982 |
| 4338868 | Refuse burning process and apparatus A process is provided for burning refuse containing polyvinyl chloride without the consequent production of phosgene. The refuse is carbonized in a rotary furnace at temperatures below 1200° F., especially 700° F., in an oxygen deficient atmosphere. A b... | 07/13/1982 |
| 4298469 | Manifolding system for oil purifiers Multiple standardized oil purifiers or refiners are ganged together to provide for suitable contamination removal from oil utilized in an engine or the like. The refiners are mounted on a manifold which functions as a single unit in conjunction with the r... | 11/03/1981 |
| 4287581 | Ultrasonic fluid leak detector A device for detecting ultrasonic noise, particularly such noise as generated by fluid leaks, includes a directional ultrasonic microphone, amplifiers and ultrasonic filters, an envelope detector, an audio preamplifier and filter, a level control, a meter... | 09/01/1981 |
| 4286891 | Connector for an elongate member in frame structures A connector for an elongate member in frame structures such as seating, scaffolding and the like, in which an elongate member is removably secured to another member to extend therefrom in selected angular relation. The connector includes a lug on one memb... | 09/01/1981 |
| 4285520 | Mass circulation publication bingo type game A game for a plurality of players wherein each player is provided with a playing card that is common to all, said playing card being presented to the players by means of a mass distribution publication. The playing card comprises a matrix of delineated ar... | 08/25/1981 |
| 4276728 | Dirt removing grid system for floors A floor grid is provided for a trafficway for removing debris from traffic passing thereover. The grid comprises a support structure below the surface of the trafficway, a plurality of spaced tread rails defining an upper surface which is generally flush ... | 07/07/1981 |
| 4270794 | Retractable seat structure A retractable seat structure for movement between an open, extended position and a foldable, retracted position has a frame for mounting within a wall and a seat assembly foldably mounted relative to the frame. An elongate pivot member such as a rod exten... | 06/02/1981 |
| 4264639 | Stearoyl lactylate salt composition having improved physical properties and method of production A stearoyl lactylate salt composition and method of production thereof wherein the composition has improved handling and storage characteristics. The lactylate salt is thermally mixed with from about 2% to about 30% (by weight) of hydrogenated stearin whi... | 04/28/1981 |
| 4259941 | Fireplace construction for mobile homes A prefabricated fireplace construction for mobile homes comprises a firebox having an entranceway to a room, and an upstanding flue connected with the firebox for exhausting combustion gas to the outside atmosphere. A fluid duct has one end connected with... | 04/07/1981 |
| 4258795 | On-off sprinkler head having an offset drive motor An on-off sprinkler head for fire extinguishing systems comprises a housing having a central cavity with an inlet aperture and a discharge orifice disposed at opposing ends thereof in an aligned orientation. A reciprocating valve having a valve head, a ma... | 03/31/1981 |
| 4257658 | Cable shield connector assembly A cable shield connector assembly for making electrical connections to the shield of a multi-conductor communications-type cable includes a split cylindrical sleeve having circumferentially spaced contact ridges for insertion about the conductors and with... | 03/24/1981 |
| 4248260 | Control device for center pivot irrigation units A control device is designed for center pivot irrigation units of the type having an elongate water carrying pipe with a plurality of support vehicles spaced therealong, and wherein each of the vehicles includes a double acting hydraulic cylinder mounted ... | 02/03/1981 |
| 4242985 | Animal actuated feeder An animal feeding device in which the animal actuates the transfer of the feed from a sheltered feed storage hopper to a feeding station by working a lever or similar device. The feed hopper is positioned above the feeding station, whereby the feed will t... | 01/06/1981 |
| 4241656 | Self-cleaning nozzle for lithographic printing dampeners A self-cleaning nozzle for lithographic printing dampeners includes a central liquid duct and an air expansion chamber surrounding the liquid duct and defined by a cylindrical wall closed at an entrance end by a baffle having circumferential slits thereth... | 12/30/1980 |
| 4240718 | Sports spectacle structure A spectacle structure for wear during active sports where eye protection is desired includes a protective panoramic or wrap-around frame and portions snugly engaging spaced parts of the head to support the frame on the head of a person. Lenses, such as pr... | 12/23/1980 |
| 4223205 | Central heating systems furnace having a self-contained electric steam heating unit A central heating system furnace includes a self-contained closed-system steam heating unit mounted in a housing having a cold air inlet and a hot air outlet. The unit includes a plurality of side-by-side radiators arranged above a boiler unit having an e... | 09/16/1980 |
| 4219115 | Accumulation conveyor brake A brake mechanism for an accumulation conveyor includes a brake frame supporting a brake pad at an angle and movable between a lower braking position with the brake pad frictionally engaging one of the conveyor rollers on an upper non-braking position. Pr... | 08/26/1980 |
| 4216840 | High clearance vehicle drive arrangement A drive arrangement for a high clearance vehicle comprising an elongate, mobile frame having depending, laterally spaced struts at front and rear ends mounting front and rear wheels respectively. A ring gear is fixed relatively to each rear drive wheel an... | 08/12/1980 |
| 4216769 | Bi-flow nasal cup A bi-flow nasal inhalation cup for mixing oxygen and ambient air includes a crescent shaped cup member or open top receptacle having a recessed pocket in a downwardly sloping collecting floor. A curved inner wall extends above and below a cup floor inner ... | 08/12/1980 |
| 4215508 | Apparatus and method for fumigating stored agricultural commodities An apparatus and method for fumigating stored agricultural commodities such as grain and the like, includes an applicator for porous envelopes or sachets of prepackaged pesticides of the type which react with moisture in the air and produce a toxic gas. T... | 08/05/1980 |
| 4213506 | Drag harrow pressure adjusting device For use with a farm implement frame, a drag harrow pressure adjustment device which includes bracket members designed to pivotally mount implement frame arms to an implement frame beam. The frame arms have mounted thereto harrow sections containing harrow... | 07/22/1980 |
| 4204677 | Baseball throwing practice target A baseball throwing practice target device is comprised of a series of selectively rotated and stacked block members which are removably engaged upon a generally vertically extending upright structure secured to a weighted base plate. The block members ha... | 05/27/1980 |
| 4203414 | Stone cutting apparatus Irregular surfaced slabs of stone are split into blocks of selected width by an apparatus having an upright frame mounted upon a base and with spaced vertical columns connected to opposed upper and lower vertically reciprocal carriages carrying rows of in... | 05/20/1980 |
| 4200236 | Mobile water jet sweep cleaner A mobile water jet sweep cleaner for movement over surfaces to be cleaned having a housing with a top wall, depending front and end walls and intermediate ribs with bottom opening notches therein. An elongate spray pipe is positioned in the notches and re... | 04/29/1980 |
| 4199430 | Seal construction for electrostatic fluid treaters An annular seal construction for sealing the ends of the flow passage between a pair of concentric, cylindrical electrodes of an electrostatic fluid treater includes a frusto-conical outer surface for engagement with a similar surface formed on the interi... | 04/22/1980 |
| 4199429 | Pilot light assembly for electrostatic fluid treaters A pilot light assembly for use in an electrostatic fluid treater, having spaced inner and outer electrodes, includes a pilot light mounted on a conductive fitting receivable in an aperture through an end of the outer electrode, the fitting being connected... | 04/22/1980 |
| 4197139 | Process for the reclamation of acid from spent pickle liquor A process for reclaiming pickling liquor acid from spent pickle liquor comprises injecting the spent liquor from a metal pickling process into a container having an upper section, a lower liquid holding section and a heating means. The spent pickle liquor... | 04/08/1980 |
| 4195452 | Gutter and hanger arrangement A gutter and hanger arrangement for a building includes a hanger with a flashing section for anchoring to a roof, a fascia section for overlying a portion of a building vertical wall and a hanger flange joined to the fascia section and having elongate cor... | 04/01/1980 |
| 4195499 | Transfer printing apparatus An apparatus for transfer printing of discrete articles comprises a frame having a rotating heat drum mounted therein, and a planar work surface member which extends perpendicularly of the heat drum, and includes a guide member at the forward end thereof.... | 04/01/1980 |
| 4195710 | Oil drain system An oil drain system having a collection receptacle that is generally rectangular with a fill spout adjacent one end. A funnel member is pivotally mounted on the receptacle and consists of a frame with a removable flexible sheet secured thereto to extend a... | 04/01/1980 |
| 4193456 | Biased agricultural implement Apparatus for connecting soil engaging tools to mobile agricultural equipment includes a vertically extending frame adapted for connection to the agricultural equipment and a trailing arm pivotally attached to the frame and having soil engaging tools atta... | 03/18/1980 |
| 4192281 | Crossbow with trigger locking device A crossbow having a trigger device for retaining and releasing a crossbow string comprises a crossbow string holding arm, a trigger arm, and a locking lever, each being pivotally mounted between the sideplates of a trigger assembly housing. The trigger ar... | 03/11/1980 |
| 4192866 | Anorectal medication A preparation for the treatment of anorectal diseases, especially hemorrhoids, comprising polyglycerides and ripe berry products of the plant Solanum carolinense (Horse Nettle). In a particular composition of the medication, a heated mixture is made of th... | 03/11/1980 |
| 4191308 | Tablet dispenser for fumigating agricultural commodities A tablet dispenser for fumigating agricultural commodities, such as grain, animal feed, and the like, comprises a container shaped to receive a plurality of pesticide tablets therein, and including a base with a dispenser aperture therethrough. A rotor is... | 03/04/1980 |
| 4191330 | Drip irrigation system for agriculture A drip irrigation system for agriculture comprises a plurality of water distribution lines extending across a field or similar area for growing crops. The lines are arranged in at least two separate groups, and the lines in each of the groups are intercon... | 03/04/1980 |
| 4191262 | Agriculture light tillage implement and tool mounting mechanism therefor A light soil tillage implement is adapted to be drawn by a farm tractor, and is designed to perform a light tillage immediately preceeding fertilizing, planting, and/or other farming operations. The implement comprises a frame having support wheels thereo... | 03/04/1980 |
| 4190394 | Method for loading and unloading railroad cars A method of loading and unloading an open top or gondola railroad car utilizes a mobile, wheeled apparatus having power actuated front and rear boom structures. A front supportive foot engageable with the upper surfaces of the railroad car sidewalls is co... | 02/26/1980 |
| 4190169 | Tamperproof package A tamperproof package comprising a container sealed by means of a turn-off type cap wherein the container has a circumferential sealing finish with a sealing rim at the upper end of the circumferential finish and including cam surfaces with a locking shou... | 02/26/1980 |
