Abstract: A one piece heat insulating cover for a closed loop cooking utensil handle is disclosed having a body of resilient rubber-like material with low thermal conductivity with a hand grip portion for substantially surrounding the utensil handle and a protective portion which lies adjacent a portion of the utensil main body between the utensil handle and the main body when the hand grip portion is in position about the utensil handle so that the protective portion provides a barrier to prevent a user's hand from contacting the utensil body when grasping the hand grip portion. The hand grip portion is formed as a generally U-shaped hollow tubular member with the protective portion extending between the ends of the U and with the hollow tubular member being slit along an edge thereof between the ends of the U to facilitate placement and removal of the tubular member about the handle.

Abstract: An agglomerated welding flux especially designed to produce tandem arc seam welds having low profiles, increased penetration, and minimal undercutting. The flux includes: aluminum oxide and silicon dioxides in the form of kyanite; magnesium oxide; and, manganese oxide.

Abstract: A tire repair device which vulcanizes an uncured rubber repair plug built in a damaged area of the tire. The frame of the device is in the form of a C-clamp having a heated backing plate which opposes a heated pressure pad. The pad is carried in a cylinder which also receives a sealing piston forming a pressure chamber behind the pad. Air under pressure is applied to the pressure chamber to force the pressure pad against the damaged area of the tire during vulcanization. The pressure pad is flexible in order to conform to the tire surface against which it is pressed in opposition to the backing plate.

Abstract: A repair part for a small ball joint is provided in the form of a sleeve open at least at one end and having a flattened section extending from that one end toward its middle. A slot extends lengthwise of the flattened section and is open at the one end of said sleeve to embrace the shank of the ball part of the joint. A retainer member extends inwardly from the wall of the sleeve at a location generally opposite the end of said slot, for engaging the socket part of the joint and holding the sleeve around the assembled joint.

Abstract: The invention relates to a multiple coupling for lubricating systems, preferably progressive lubricating systems of motor vehicles, especially tractor trailer units. The multiple coupling a plug box and a plug, with the help of which several lubrication pipes may be interconnected. In order that the plug box-plug-combination may be used for variable number of lubrication pipes, a special valve arrangement has been provided with the help of which the desired number of passages of lubrication pipes is opened or closed.

Abstract: In a portable preheater of the type used for burning a fuel and air mixture generated from a pressurized gas cylinder and blower, and for delivering hot exhaust air for preheating, the improvements including a warming receptacle formed to support the fuel gas cylinder and define a substantially enclosed pathway around at least a portion of a cylinder supported in the receptacle and further including means for diverting and feeding back a minor portion of the hot exhaust air delivered by the engine preheater into the warming receptacle whereby the fuel gas cylinder is maintained at a temperature to permit continuous vaporization of the fuel at a desired rate. The novel combustion chamber arrangement for dynamically interpenetrating fuel stream and air flow, stationary turbine blade for helical diversion and further mixing, and retroreflective secondary burning, coact to afford long burning time at operative temperatures using small gas cylinders of the disposable type.

Abstract: A particle spacing and metering device having a supply hopper above a pair of contra-rotating rollers. An aperture in the floor of the hopper is provided with a regulator which controls the flow of particles to the rollers. The regulator has a body fixed to a shaft rotatably mounted in the aperture. A cam-type metering face has a groove of increasing depth and width to enable selected variation of a throat through which the particles flow.

Abstract: An automatic presettable welding system which enables the user to preset the arc voltage and wire feed speed to precise predetermined values without either energizing the wire with arc voltage or initiating the wire feed. A meter is supplied with an appropriate signal so the readout corresponds to the desired wire feed speed or the desired arc voltage and these same signals are supplied to wire feed speed or arc voltage comparative circuits which then function to energize a wire feed motor or an arc welding power source to the precise wire feed speed or arc voltage indicated on the meter. Means are provided for controlling the acceleration of the wire feed drive motor and a controlled initiation of the arc voltage at the beginning of each weld. Overload, over-voltage and under-voltage or over or under wire feed speed and other protective circuits are provided with appropriate delays in the functioning thereof to insure fully automatic and satisfactory welding.

Abstract: An apparatus for arc welding of a pair of spaced steel plates from one side only using a grooved back-up plate which gives a good weld bead shape on the under side, gives high linear welding speeds, and avoids contamination of the deposited weld metal by the metal from the back-up plate. A pair of consumable electrodes connected in electrical series between the output terminals of the power source and with one connected by an independent connection to the workpiece are advanced into the weld gap on lines of movement which intersect at a point above the lower surfaces of the plates so that an arc is maintained between the electrodes spaced from the base of the back-up plate groove. A separately energized electrode trails the first two electrodes and deposits a weld bead on the first deposited weld metal while it is still hot.

Abstract: The invention relates to a cabinet in which food packages, such as prepared school lunch packages, can be heated prior to serving, and maintained at a desired temperature before and during serving. The cabinet comprises an upwardly opening well closed by removable lids, a housing connected to and surrounding the well on the sides and bottom thereof and being spaced from the well so as to form a substantially enclosed air circulation chamber adjacent the sides and bottom, and a plurality of louvers in the side walls defining air inlets and outlets between the well and air chamber. Electrical heating elements are mounted within the air chamber directly below the bottom of the well so that heat generated thereby will radiate upwardly thereby heating the well bottom and, to a lesser extent, the well side walls. A thermally conductive baffle plate is disposed within the air chamber beneath the bottom of the well and functions as a heat sink to disperse and even out the radiant heat.

Abstract: A hand grip adapted to be slipped over the metal handles of cooking utensils such as pots and fry pans, having particular application to commercial grade utensils wherein the handles are metal and customarily not provided with a thermally insulating gripping portion. The hand grip is elongated and made of a resilient silicone rubber material having low thermal conductivity so as to remain cool to the touch even though the metal handle becomes quite hot. Extending nearly completely through the grip is a longitudinal opening having a plurality of axial ribs within the opening, which define axial passageways for the flow of air between the metal handle and grip thereby enhancing the insulating qualities of the grip in some circumstances. If desired, the opening may be flat and unobstructed. The grip has suitable durometer and frictional characteristics to remain in place on the metal handle during use.

Abstract: In a burner tube having burner ports formed by a series of struck-in tabs, improved structure wherein the tabs have trapezoidal shape to increase the amount of unsevered metal supporting each tab, each tab being formed by cutting through the tube wall along a line perpendicular to the tube axis and then simultaneously bending the tab inwardly and severing the tube wall from the ends of the cut along lines which converge in an outward direction.

Abstract: A cored type welding electrode which enables good penetration, has an improved range of welding voltages, produces low smoke and provides a weld deposit having good impact properties. The flux contains larger than normal quantities of basic oxides, controlled maximum amounts of acidic or amphoteric oxides and deoxidizers, and a very carefully controlled maximum and minimum amount of combined fluorine in the form of a fluoride.

Abstract: A microscope lens system is provided which facilitates rapid, convenient, and accurate substitution of one eyepiece lens for another. The microscope tube is provided with an opening and an internal receptacle communicating with that opening at the location where an eyepiece is to be supported. Each eyepiece lens unit comprises an actual eyepiece lens mounted in a clip member that encircles the lens and that meets with the receptacle to securely and precisely retain the eyepiece lens at the appropriate position along the optical axis of the microscope. A light shield, preferably integral with the remainder of the eyepiece lens unit, masks the opening in the tube when the eyepiece lens is in place within the tube.

Abstract: An imprinting wheel which comprises a plurality of annular disc members coaxial with a shaft and axially spaced therealong to define radially outwardly facing spaces therebetween and connected for rotation in unison. Printing type elements of rubber-like material have a printing portion terminating in a printing face and a base portion provided with an inner circumferential surface and joining ears which extend laterally of the printing portion. Adjacent pairs of disc members have first coaxially aligned annular shoulders forming first annular steps in the disc member which respectively engage the ears of a type element with the base portion extending across the space and the printing portion extending radially outwardly in the space and beyond the peripheral edges of the disc members, the first shoulders preventing radial outward movement of the type element. Annular resilient members have inner and outer circumferential surfaces.

Abstract: A multiple spindle inclined drilling machine includes a base having a bed inclined at an acute angle and with guideways upon said bed. A slide is reciprocally mounted upon said ways and is connected to a piston rod of a cylinder assembly mounted upon said base for effecting reciprocal movements thereof. A multiple spindle head is mounted upon said slide. An apertured fixture adapter is mounted upon said bed and lies in a plane at right angles thereto. A rotative drive mechanism is mounted upon said bed and has a variable speed output shaft. A plurality of drive spindles with individually mounted drills is adjustably supported upon and within said head and connected to said drive mechanism. An upwardly and rearwardly inclined fixture mounting plate spans and is secured to said adapter for supporting a workpiece mounting fixture.