Abstract: A map comprising a concertina-folded sheet printed on both sides of the sheet, the markings on the two sides representing contiguous areas and being disposed so that a line on the map representing a route passing from one such area to the other extends around an edge of the sheet which lies at right angles to the concertina folds, the sheet having on an outer end flaps two key maps, inverted with respect to each other and corresponding respectively to the two sides of the sheet, to direct the user to the desired part of the map by means of indicia associated with the key maps which correspond to indicia provided upon the edge folds of the map.

Abstract: A metallurgical apparatus; air is continuously blown into a mixture of agglomerates of lead concentrates and carbonaceous fuel in a shaft furnace. The resulting slag is delivered from the shaft furnace into a settling tank to which the slag continuously flows while the slag is continuously delivered from the settling tank into a fuming furnace, so that the slag flows in cascade from the shaft furnace to the settling tank and from the settling tank to the fuming furnace, thereby providing a continuous flow of the treated slag from the shaft furnace through the settling tank into the fuming furnace; the slag, in addition, is continuously withdrawn from the shaft furnace.

Abstract: A system for treating molten metal with addition agents comprising a refractory lined vessel containing the molten metal and a vehicle movable relative to said vessel having associated therewith a cylinder terminating in an extrusion die. The refractory lined vessel has an addition agent port in the base which may be stopped and unstopped. The cylinder is provided with means for engaging the addition agent port on the vessel and communicating therewith. The cylinder is provided with means for advancing extrudable addition agent through the die. When the port is stopped, the vehicle can be brought near the vessel, and the cylinder connected to the port and when the port is unstopped the cylinder may be discharged through the die introducing additive agent into the bottom of the vessel.

Abstract: A metallurgical induction heating apparatus has an upwardly cupped induction coil having a housing formed with an upper rim and containing a heavy-duty coil. A crucible formed of a metallic base pan and a metallic holding collar interconnected by a plurality of upright tubular tierods so as to clamp a multiplicity of refractory bricks has an annular upper support body which extends outwardly beyond an upper mounting ring to which the upper ends of the tierods are connected and which rests on the rim of the induction heater. Means is provided for circulating a coolant fluid upwardly through the tierods and into an annular compartment formed inside the support body. A hood may be placed over this arrangement in gas-tight contact with the upper surface of the annular body so that the interior of the crucible can be evacuated or filled with an inert gas.

Abstract: An apparatus for recovering lead from worn out electric storage batteries in which finely divided dried battery mud is injected into a stream of air through the veni contracta of a venturi in an air conduit. A reducing gas and oxygen are successively introduced into the stream through apertures in the walls of the conduit communicating with annular chambers in fuel and oxygen manifolds surrounding the conduit in sufficient quantities to maintain a stable reducing flame. The droplets of metallic lead and slag which fall from the reducing flame are collected in a refractory lined chamber and separated in a conventional manner.

Abstract: An electrical connector adapted to be mated with a terminal block of the type having a plurality of terminal contact blades upstanding therefrom. The connector comprises a rigid body of insulating material having a plurality of apertures in each of which a contact slug is suspended by a coil spring for spring-biased electrical contact with a contact blade received in the aperture. A spring end tine projects through and is soldered to conductive zones on a printed circuit board carried by the connector body for electrical connection of the individual contact blades with electronic circuitry. A pair of clamps are pivotally mounted on opposite side edges of the connector body and coupled to a rotatable elliptical cam for selective movement between a retracted position and a position for embracing a terminal block.

Abstract: A gas delivery tube including tubular body portion of refractory material having a recess adjacent one end in which recess is housed a porous element for emitting small bubbles containing the gas. The body portion is provided with an internal gas inlet pipe, one end of which opens into an internal chamber in communication with said recess while at its other end the pipe terminates in means enabling it to be connected to a supply of gas.The delivery tube is especially useful for degasifying aluminium, copper, and their alloys.

Abstract: A form suitable for airline ticketing which includes as one exterior ply a web wider than intermediate plies and wherein the overlapping portion is equipped with control openings.

Abstract: A tuyere for a melting furnace, which comprises inner and outer walls forming a water cooling space therebetween; a cylindrical intermediate wall dividing the water cooling space into an inner water cooling chamber and an outer water cooling chamber, whereby the cooling water is first introduced into the outer water cooling chamber from the outside of the furnace, circulated into the inner water cooling chamber from the inner end portion at the furnace side of the outer water cooling chamber and thereafter discharged from the outer end portion of the inner water cooling chamber; and a guide wall disposed in the outer water cooling chamber so as to form a helical passage for the cooling water, said helical passage being so devised that a portion of the passage located so as to be subjected to a relatively high heat load has a cross-sectional area smaller than that of other portions of the same.

Abstract: A continuous stationery assembly particularly intended for use with typewriters, terminal printers, mini-computers and so on, whether or not such devices embody pin feed driving mechanisms, wherein the assemblies are fed through the machine and refolded effectively, comprising a front and a back outer record web, both with marginal feed apertures, at least one intermediate web with transfer material associated with it, respectively secured to the web next above it, and wherein the two outer webs extend beyond the longitudinal side edges of the intermediate web to form side margins at opposite sides of the assembly, securing means within the respective margins joining the front and back webs together and a further securing means joining the intermediate web to at least one of the outer record webs, longitudinal lines of perforations in the front and back webs adjacent the side edges of the intermediate record web to facilitate removal of the margins and longitudinal lines of perforations in each of said webs t

Abstract: The specification discloses a book index which has an index page adapted for permanent attachment to the body of a page of a selected book, color indicia carried by the page, subject identification means associated with the color indicia, transparent colored sheets keyed to the colors of the color indicia and adapted to self-adhere to the pages of the book selected for marking and to cover the pertinent subject matter desired to be marked extending to the margin of the page whereby the color indicia is visible when the book to which the sheets are applied is closed. The marking and indexing of passages of selected subject matter is done by affixing the index page to the forepart of the book, writing in the title of the subject in association with the color indicia and affixing the colored sheets to selected passages in the book and extending the colored sheets to the edge of the page whereby they are visible when the book is closed.

Abstract: Finely divided particulate material is discharged against the incandescent wall of a rotary furnace through a pipe extending into the open end of the furnace in a position where the material is out of the path of the flame projected into the furnace through the open end and out of the path of the out-flowing gases. The material is retained against the interior wall of the furnace by centrifugal force and, as the material melts, it collects in a pool at the inner end of the furnace. The entrainment of fine particles and their subsequent removal with the exhaust furnace gases is thereby substantially reduced, if not entirely eliminated.

Abstract: An electrical interconnection board with lead sockets mounted in plated-through holes therein. The lead sockets are hollow cylindrical elements having a tapered entry opening at one end and a plurality of normally converging flexible fingers at the other end. The lead sockets are force fitted into the plated-through holes in the board with the receptacle end of the socket opening into the component side of the board. The invention is also concerned with the method for mounting lead sockets to electrical interconnection boards.

Abstract: A spade terminal of unitary sheet metal construction comprises a flanged forward portion, a triple layer median portion and a rearward attachment portion. The flanges extend in opposite direction to a height equal to a layer thickness. The triple layer median portion comprises upper and lower wings which terminate short of opposite longitudinal sides so that each longitudinal side is a double layer. This configuration permits use with an insulator body having guide channels for the forward and median portions of the terminal which can be made in a butt cored mold.

Abstract: A connector with a dielectric casing that accommodates plural terminals. The terminals have insulation-piercing and pin-receiving contacts for establishing interconnections between a flat cable and plural conductive pins on a circuit element.

Abstract: A circuit panel connector for enabling the connection of a plurality of circuit terminals at the edge of a circuit panel, such as a printed circuit board, with external conductors includes a unitary block of dielectric material with an elongate slot and self-aligning unitary electrical contact members each having opposed tines for receiving the edge of the circuit panel and a terminal portion with a platform and a clamping screw for selectively securing an external conductor to the electrical contact member.

Abstract: An electrically insulating material housing for an electrical terminal comprising a receptacle portion for receiving a flat tab and a crimping ferrule portion axially aligned with the receptacle portion, the receptacle portion having a substantially flat base from the edges of which extend a pair of inwardly rolled over arms having their free ends directed towards the base such that the tab can be received and gripped between the free ends of the arms and the base, the housing being in the form of a tube having a pair of spaced parallel side walls joined by a bottom wall, and a top wall which slopes inwardly from each side wall of the housing towards the center of the top wall, the top wall carrying a stop projecting into the housing and arranged to engage behind the rolled over arms of a terminal when inserted into the housing from one end, and there being an inwardly directed stop at the other end of the housing whereby an inserted terminal is secured within the housing by engagement with the stops.

Abstract: An electrical connector including a rigid core having spaced shaped grooves each mounting an elongate resilient member. A flexible strip of insulating material is wrapped around the core. A plurality of spaced apart conductive strips is provided on the strip so that the strips extend circumferentially around the core.

Abstract: An improved letter sheet continuous stationery assembly is disclosed, and includes a front web and a backing web. Longitudinal and transverse cuts are made in the front web, but not the backing web, so as to define a plurality of letter sheets. The front and backing webs are permanently secured together along their side margins by lines of adhesive. The letter sheets produced in the front web are temporarily secured to the backing web by other lines of adhesive during the time the assembly is fed through additional forms handling equipment such as a computer controlled printer.

Abstract: A tree harvester in which the tree is engaged by an articulating boom, felled by a fell shear on the boom and fed into a buck shear on the machine which bucks the tree into sections which are stored in a sling on the machine. After the sling is filled, the machine deposits the sections at a pickup location.