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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4918290 | Portable towel heating device A portable heating device includes a cabinet, a source of heat, support for a towel so as to exposed the towel to the heat, and an opening at the top to the heat. The towel heating device of the invention may be used to warm or dry towels or other like cl... | 04/17/1990 |
| 4825031 | Weld gun control A weld gun assembly including a support structure; a pair of arm members pivotally mounted intermediate their ends on the support structure on a common pivot axis; a weld tip at one end of each arm member; an air cylinder interconnected between the other ... | 04/25/1989 |
| 4816648 | Toothbrush sterilizer A toothbrush sterilizer includes a housing member having a well formed therein for allowing the bristle portion of the toothbrush to be inserted into the interior of the well. The interior of the well defines a sterilization cavity. A closure lid is mount... | 03/28/1989 |
| 4810856 | Rotary-spit steam cooking apparatus An infrared cooking oven is provided with a rotatable spit which is hollow and is connected to a boiler producing steam which is fed into the spit and through orifices of the latter into meat mounted on the spit. The internal steam cooking coupled with th... | 03/07/1989 |
| 4804821 | Aroma diffuser assembly An aroma diffuser assembly is provided with an electrical wire heating element for effecting the release of an aroma from a contained aroma producing material. Power is supplied to the heating element by a power supply assembly which has a first portion f... | 02/14/1989 |
| 4804818 | Coated electrode for arc welding Disclosed is an electrode comprising a base rod and a hard coating, or a base wire which is coated with a powder or metallic coating of aluminum and optionally of hard coating material that adheres to the electrode and forms a partial pressure of arc acti... | 02/14/1989 |
| 4803340 | Covered arc-welding electrode A covered arc welding electrode includes a steel core wire and a flux which is applied to the outside periphery of said steel core wire. The welding electrode can form a superior crack-resisting weld zone even if fluctuating stresses are continually appli... | 02/07/1989 |
| 4801782 | Heated cup A vessel for maintaining a heated liquid hot, includes a receptacle to house the heated liquid, having an electrical heating element integral therewith and power connection leads electrically connected to the heating element; the vessel may suitably inclu... | 01/31/1989 |
| 4800249 | Automatic system for assembly and welding metal sheet bodies, particularly car bodies, suitable for high mass production An automatic system for the production of metal sheet bodies, preferably car metal bodies, which is composed of a plurality of forming-welding assemblies contained in stores so that they can be preselected and carried each in correspondence with an assemb... | 01/24/1989 |
| 4798932 | Solid phase edge bonding of metal strips A continuous process for solid-phase edge bonding a plurality of dissimilar metal strips to form a composite edge-bonded strip. A plurality of elongated metal strips of equal thickness are heated and aligned in a substantially planar, edge-to-edge relatio... | 01/17/1989 |
| 4798933 | Ski-boot heater A ski-boot heater has a heating resistor and a battery mounted in the boot and a socket is provided in the boot for connecting the resistor and the battery to an external voltage source. A control circuit enables the battery to be recharged with direct cu... | 01/17/1989 |
| 4798937 | Warmer plate cover A brewing apparatus for brewing coffee or the like having a warmer plate includes a warmer plate cover of heat resistant plastic material. The warmer plate includes a top surface and a bottom surface. The top surface is patterned to produce uniform heat d... | 01/17/1989 |
| 4795883 | Aroma generating apparatus and driver circuit An aroma generating apparatus includes a driver circuit which functions as a real time lapse counter and includes a signal indicator to designate the replacement period of useful lifetime of the aroma producing cartridge. The driver circuit continuously o... | 01/03/1989 |
| 4795875 | Contact wire for a roller seam welding machine The contact wire (30) for a roller seam welding machine is provided on its front face with grooves (32) which are formed in the longitudinal direction of the wire and which are bounded by sharp longitudinal edges (34). The contact wire (30) is particularl... | 01/03/1989 |
| 4794233 | Radiant heater A radiant heater has a shallow shell-like support for carrying heating resistors and a glass ceramic top plate. A connection and hot warning indicating device is arranged in the space between the top plate and the support. The light source is preferably a... | 12/27/1988 |
| 4794224 | Dry film developer for an aperture card printer An improved dry film developer for use with a machine of the type that processes aperture cards which developer incorporates a holding mechanism for holding and stretching the aperture card while a heating block having an arcuate projecting surface is urg... | 12/27/1988 |
| 4792659 | Garage door opener heater A garage door opener heater for use on garage doors to heat the drive track of the opener during cold weather to prevent binding and restricted movement of the track when the lubricates within the track solidify at cold temperatures.... | 12/20/1988 |
| 4789772 | Infra-red heaters An infra-red heater (1) for a glass ceramic top cooker includes a dish containing a base layer of thermal insulating material. A peripheral wall of thermal insulating material extends around the periphery of the base layer and at least one infra-red lamp ... | 12/06/1988 |
| 4788414 | Radiant heating unit for cookers or the like In a radiant heater (1) a support tray (3) receiving the radiant heating elements (10, 11) and hotplate (4) are displaceable with respect to one another by sliding guides (27) immediately adjacent to hotplate (4) and are self-adjustably tensioned with res... | 11/29/1988 |
| 4788411 | Welding method which provides a weld with corrosion protection A welding method for metal parts includes preparing the surface areas of the parts to be welded to provide bare metal surfaces which are clean and dry, clamping said parts together, coating the bare metal surface with a liquid coating comprised of zinc du... | 11/29/1988 |
| 4786779 | Saw blade segment welding apparatus A welding apparatus for welding hard segments to the circumference of a base of a saw blade. The blade base is clamped between two electrodes of a first electrode unit which can rotate. The segment is clamped by conductive fingers of a second electrode un... | 11/22/1988 |
| 4785154 | Method and apparatus for joining together the ends of a metallic band by resistance inert gas welding This method of electric welding metal band ends together comprises a fusion cycle with the introduction of inert gas, a cooling cycle with the introduction of cooling air, and an annealing cycle. The method is carried out in a fusion head having grippers ... | 11/15/1988 |
| 4785151 | Swivel-truck bakery oven A swivel-truck bakery oven having a baking chamber, a charging door, an electric control box, a recirculation channel, a re-circulation fan, heating elements for heating the re-circulation air, mechanical and power equipment for rotatably driving the swiv... | 11/15/1988 |
| 4782214 | Indirect-heating truck-type bakery oven This indirect-heating, truck-type bakery oven includes a baking chamber closed by a charging door opening throughout the surface of this door, a re-circulation channel provided with a turbine-type fan and heater for heating the cooled air from the baking ... | 11/01/1988 |
| 4780597 | Electrical baking and roasting oven An electrical baking and roasting oven defining a cooking chamber which can be closed by a door, the oven having side walls bounding the cooking chamber and the oven being composed of an upper heating element and a lower heating element for heating upper ... | 10/25/1988 |
| 4780596 | Hot-air circulation cooking oven A cooking oven includes a box-like casing defining a heating chamber wherein food in placed. A rear plate of the casing has a recess projecting outward, a number of suction holes cut in the bottom of the recess, and a number of discharge holes cut in sect... | 10/25/1988 |
| 4778978 | Cooking unit with radiant heaters In a cooking unit (1) in the marginal region of the underside of hotplate (3) a tensile stressed support (4) is fixed immediately adjacent to the outer circumference (8) of a radiant heater (2). Support (4) engages below a cover (13) of the insulation of ... | 10/18/1988 |
| 4777344 | Thin fur lined jacket An electrically heated jacket is provided that includes a garment with a pair of attachable gloves and hood mask all connectable to a heating element supplied by a portable power source worn on the jacket to emit heat to torso, arms, hands and head of wea... | 10/11/1988 |
| 4775777 | Open-loop self-cleaning oven temperature control A nominal closed-loop temperature control system and method for a self-cleaning oven is adapted, upon recalibration of the bake temperature of the oven, to operate in an open-loop manner during the CLEAN mode of operation of the oven, Specifically, prior ... | 10/04/1988 |
| 4771163 | Baking oven A baking oven has a housing formed by a back wall and by circumscribing walls. It is divided into an air heating -and- propelling room and a baking compartment by a vertical wall parallel to the back wall. The rear wall has a central air suction opening f... | 09/13/1988 |
| 4771162 | Apparatus for treating plastic parts for use in dental and orthodontic applications A device for treating plastic parts for use in dental and orthodontic applications includes a pressure receptacle which has walls which define a hollow interior with an opening which is closable by a cover or lid. A support for material to be treated is p... | 09/13/1988 |
| 4769525 | Circuit package attachment apparatus and method A circuit package, or other device, (10) is mounted on a printed circuit board, or other substrate, (14) with an electrically conductive sinuous resistor wire structure 30 therebetween to define a space filled with adhesive. When the adhesive is set the p... | 09/06/1988 |
| 4767915 | Solid plate plug-in heating element A solid plate plug-in top surface heating element which is interchangeable with a shielded spiral wire surface heating element. Rigid conductors connect to the ends of the resistive wire heating element on the underside of the solid plate top disk. The ri... | 08/30/1988 |
| 4766288 | Flash fusing reflector cavity A fuser having an illuminator disposed within a relatively narrow box-like cavity, the cavity including a plurality of reflecting surfaces to produce substantially uniform radiation across the cavity, the reflecting surfaces including a flat diffuse refle... | 08/23/1988 |
| 4766290 | Sealed electric hotplate A sealed electric hotplate is to be provided, which can be simply fitted by lateral insertion into a hob. For this purpose a hotplate with a cast metal body is surrounded by a very wide trim ring, which is provided with centering projections. The wide rin... | 08/23/1988 |
| 4764662 | Automatic heating device An apparatus, and process for insulating a splice with a heat shrinkable tube. The spliced wires and tube are transferred inside an oven by moving means, and after the tube is heat shrunk in the oven the wire assembly is then removed from the oven and aut... | 08/16/1988 |
| 4764663 | Electric radiation heater assemblies An electric radiation heater assembly for a glass ceramic top cooker includes at least one heating element having a substantial positive temperature coefficient of resistance, such as an infra-red lamp. A resistive assembly is electrically connected in se... | 08/16/1988 |
| 4764665 | Electrically heated gloves A heated glove includes an electrically heated woven fabric in which the fabric has been coated with electrically conducting metal to enable its use as a heating element. The fabric heating element is in the shape of the front and back of a hand with the ... | 08/16/1988 |
| 4764661 | Air humidifier An air humidifier used for regulating humidity in indoor spaces, such as residential flats, and in which the humidity has been produced by vaporizing water in a vaporizer. The problem in existing air humidifiers is the constant need to add water and the n... | 08/16/1988 |
| 4762978 | Aircraft battery assembly An aircraft battery assembly to provide a preheated battery to facilitate aircraft operation in cold temperature. The battery assembly includes a battery housed in a battery box and having a heating jacket wrapped around it. The heating jacket is elongate... | 08/09/1988 |
