Abstract: A hand tool for quickly, easily, and cleanly removing concentric knockout rings from electrical sheet metal enclosures. The tool is an elongated member fabricated of flat metal stock. Notches in opposite edges at one end of the tool are adapted to engage opposite inner edges of a knockout ring having a central opening. The tool is rocked back and forth pivoting the two halves of the knockout ring about the tabs retaining it in the sheet metal of the enclosure until the tabs fracture completely severing the knockout ring from the enclosure and providing an opening in the enclosure wall for accommodating cable or conduit.

Abstract: A device for driving screws, rivets and the like is disclosed which has a nozzle consisting of an upper half part and an under half part, which are movable relative to each other. By pressing a lever with a finger of the operator and then releasing it, the nozzle is opened and closed in order to grasp screws, rivets and the like. Between the two halves of the nozzle a center rod extends coaxially with the nozzle; and, by pressing a grip end cylinder of the device, the nozzle is opened and simultaneously the center rod is thrusted towards the tip of the nozzle so that the rivet or the like may be pushed out. Alternatively, by rotating a rotary cylinder of the device while pressing the grip end cylinder, the center rod is thrusted towards the tip of the nozzle and rotated so that the screw may be driven in a work piece.

Abstract: An electrically powered knife has a handle with projecting removable knifeblades driven from a drive unit containing an electric motor, the drive unit being readily disconnectable from the handle so that this can be cleaned without risk of damage to the motor. A switch controlling motor operation is located in the drive unit but is operated from the handle by a mechanical link or a Bowden cable extending from a push button to an end surface of the handle to engage a switch member at an adjacent surface of the drive unit.

Abstract: A machine for cutting logs into lengths and then splitting the logs, the entire machine being portable. A common power source is provided for the circular saw and the log splitter, and the sawing and splitting operations can be performed independently of one another and either selectively or simultaneously. The machine includes a frame having the circular saw located adjacent one side of its top side and a slideable table feeds the logs into the saw. The log splitter is located on a large, rigid backbone of the machine frame and which also forms a tongue portion of the machine. The circular saw and the splitter are both hydraulically powered and controlled.

Abstract: An apparatus that facilitates the manufacture of wooden stairs of the type having treads and risers extending between and affixed to side housings or stringers. The apparatus provides multiple, parallel guides for the router used to cut the grooves in the stringers into which are fitted the treads and risers. By using a parallelogram construction for the multiple guides, the apparatus can be quickly adjusted and set to produce almost any size of stairs. An index bar used with the apparatus allows the apparatus to be quickly set for the particular stairs desired so that the grooves for both the treads and risers can be cut quickly and accurately in the stringers. The router is moved along each of the parallel guides to cut the grooves for all of the treads, and then the apparatus is quickly and easily reset and locked into position to set the guides for cutting of the grooves for the risers.

Abstract: For dampening exhaust gas noise a muffler contains two portions, of which one is adapted to take care of high frequency noise and includes dampening material, and the other is adapted to take care of low frequency noise and is devoid of such material. The latter portion includes an inner, perforated tube, a surrounding casing and wall means for subdividing the casing axially as well as transversely. The length of the tube is compatible with the lowest frequency of the noise to be divided, and the location of the wall means is selected as to form chambers of varying lengths compatible with other frequencies within the low frequency zone.The high frequency portion may be fitted concentrically around the low frequency portion, or may be located so as to form an axial extention thereby.The means communicating the low and the high frequency portions may include a radial diffusor.

Abstract: A tree and stump splitter having a vertical edged splitting blade, a horizontal cut off blade, and quick attachment means to secure the splitter to a bulldozer blade.

Abstract: A sanding head providing for the extraction of dust produced during sanding, and comprising a shaft casing, a shaft rotatably mounted in the casing and capable of being driven by motor means, a circular backing plate of a ventilated type, which is connected to one end of the shaft, said circular backing plate being provided in its front face with ventilating grooves and having in its center a hollow cylindrical element, which has a closed front end and which is provided, adjacent its closed front end, with lateral windows communicating the inside of the hollow cylindrical element with the ventilating grooves, and a means for detachably fixing an abrasive disk to the closed front end of the hollow cylindrical element. The hollow cylindrical element of the plate is rotatably mounted in the shaft casing at one end thereof, whereas the shaft is rotatably mounted only at the other end of the casing.

Abstract: A router is mounted on the back of a support plate which can be raised or lowered to a precise adjusted position with respect to a base plate such that a dovetail cutting tool cuts precision dovetail joints in wooden workpieces. Other cutting tools can be employed for rabbeting, mortising, as well as for cutting square and round tenons to produce close fitting wooden joints.

Abstract: A theft prevention assembly for use with car wheels and the like includes a threaded sleeve adapted to be threaded onto a wheel mounting stud in place of the usual lug nut, the sleeve having an enlarged head portion at its outer end which is loosely encircled by a ring. The ring and enlarged head portion having opposed surfaces preventing the ring from moving outwardly of the head portion. A special wrenching tool has clamping members between which the ring and outer end of the sleeve may be clamped to produce sufficient frictional force to cause the assembly to rotate as a unit when the wrench is turned.

Abstract: Apparatus is provided for splitting wood and specifically logs. The apparatus includes a conical splitting device which is attached to a vehicle wheel hub and is rotated as the wheel is driven. A separate mounting plate attaches the splitting device to the wheel hub which enables one splitting device to be mounted on a variety of vehicle wheel hubs by the use of a variety of mounting plates. The splitting device itself has a spirally-grooved cone with a truncated conical portion behind the cone to prevent the possibility of logs riding up the device and damaging the wheel hub or adjacent portions of the vehicle.

Abstract: In a packaging machine having a first conveyor for supporting and transporting a plurality of loaded cartons to an end closure station, the cartons being supported with an open end disposed in a substantially vertical plane, the improvement of a mechanism for reorienting the carton as it is driven towards the end closure station so that the open end is relocated so as to open upwardly and the weight of the contents of the package is directed away from the open end so that during subsequent closure, the contents of the package will not interfere with the movement of the end flaps to the closed position. Preferably a vibrating mechanism is also provided for vibrating the cartons after they have been reoriented so that the contents of the package are urged to settle in a direction away from the open end.

Abstract: The opening of a flexible container is closed by gathering the portion defining the opening into a bunch, surrounding the opening with an adhesive and allowing the adhesive to harden.

Abstract: A screwdriver comprising a shank, a conventional screw driving head projecting from one end of the shank and in alignment therewith and characterized by an auxiliary screw driving head including a pair of auxiliary screw driving bits projecting from opposite sides respectively relative to the shank and angularly arranged relative to each other whereby a screw with a limited overhead space may be screwed by alternative engagement of the auxiliary screw driving bits with the head of the screw and progressive complementary rotation of the auxiliary bits. The latter are angularly arranged at different angles relative to the shank each as seen in front view. Thus for slotted head screw the auxiliary ribs are angularly offset one relative to the other by an angle of preferably 90.degree. between them as seen in front view to complementarily produce a rotation of 180.degree.. For an allen screw or phillips screw the auxiliary bits are similarly offset by preferably 45.degree.

Abstract: A gating system of general application for pouring foundry molds by gravity, based on a distinct prefabricated casting skin-strainer, located along and following the casting surface, structurally constructed and mold supported to withstand the impact of falling molten metal and the consequent metalistatic pressure, all while the cavity is filled through a skin-strainer aperture and with the skin-strainer retaining its original position and shape. The skin-strainer is able, when necessary, to allow the feeding of the casting once the mold is full and before it is solidified. Depending on the casting to be poured the system may include an overhead melt distributor, and techniques for mold casting cavity venting and sprue-feeder extraction.

Abstract: The invention is directed to a nozzle for feeding liquid metal to a moving mold of a continuous sheet casting machine, such as continuous casting between cylindrical rolls rotating about a horizontal axis. The nozzle is characterized by cheeks the inner side walls of which extend beyond the orifice initially by a straight element which can be composed of several parts then by a portion that is tapered to diverge from the nozzle axis at an angle of 5.degree. to 15.degree.. These cheeks may be strengthened in order to resist the strains caused by the solidified metal, and they may be provided with cooling or heating means. They are mounted to extend either into the area between the cylindrical rolls or to terminate outside their rolling area.

Abstract: Disclosure is made of a device for packing flat articles, mainly battery electrodes into a separating material, wherein a bed supports a grip which moves the article to be packed jointly with the material. Installed in line with said grip on said bed is a material feeding mechanism in the form of two reels mounted on parallel axles. The grip is linked kinematically with the carriage of the material feeding mechanism, said carriage reciprocating jointly with the grip. A guide with a slot receiving the article to be packed, is mounted on the carriage, the slot being limited by a fixed stop on the side opposite to the grip.

Abstract: An apparatus for cutting a hole through the sidewall of a longitudinally extending pipe is disclosed herein. This apparatus includes a cylinder saw, i.e., a hole saw and a portable jig for supporting and guiding the saw during the hole cutting operation.

Abstract: A process for applying a coating to a centrifugal casting mold for casting copper or alloys thereof in which prior to introducing the molten metal into the mold, an aqueous suspension of powdery material is introduced into the mold and applied on the internal surface thereof in the form of a thin layer. The constituent components of the suspension are zirconium oxide (ZrO.sub.2) and an inorganic binder material, preferably non-sintered alumina (Al.sub.2 O.sub.3), so that a heat-conductive and gas-permeable layer is formed on the surface of the mold.

Abstract: The book cover applicator is suitable for use in applying covers to multiple sheet fillers which have been secured together along the spine by a hotmelt adhesive. The applicator comprises means for holding the filler and cover at a bonding station and bonding means mounted adjacent the bonding station, the bonding means including a heater bar for applying heat to melt the hotmelt adhesive, and a set bar for holding the cover square up against the filler and conducting heat away from the adhesive for a fast and perfect set. The hotmelt adhesive provides a strong, flexible bond between the filler spine and the cover.