Abstract: A means to maintain the upper wear pads in a multisection telescopic crane boom in contact with the side plates of the circumscribing boom section to reduce the transverse bending moment on the top plate of the boom section, thus reducing the stress thereon, and allowing the use of a thinner top plate so as to provide a lighter and less costly boom structure.

Abstract: A wall panel having a flat face member and a flat back member with a plurality of corrugated sheets disposed in a plurality of superimposed layers with corrugations of adjacent sheets extending in crossed relation and with such adjacent layers of corrugated sheets sandwiched between the face and back members.

Abstract: The apparatus disclosed includes an elongated reinforcing member with stress anchors attached to each end for embedding in a body of hardenable material, such as concrete, when the material is cast into the desired shape for the structural member. The apparatus includes a member containing potential energy. After the material has hardened, the potential energy is released to place the material between the stress anchors in compression to prestress the structural member before it is placed in service.

Abstract: A moderately flexible, daylight transmitting and insulated curtain wall that lends itself to industrialized mass-production, is delivered to the site in a large roll and connected on minor attachments to building columns. Curtain walls consist of corrugated or flat metal sheet with large percentage of openings which are covered by transparent plastic film or sheet on outside and inside, spaced apart by strips of insulating foam. Major structural elements are wire ropes which are embedded in the corrugations of the sheet metal or merely mechanically attached and fastened to the inside of non-corrugated sheet metal.

Abstract: A drill bit for use in concentrically arranged dual drill strings. The bit has an outlet eccentrically arranged respective to its longitudinal axial centerline, and a formation engaging surface made of a plurality of spiraling faces which diminish in area as the cutting face curves about and toward the outlet. The area located between the spiraling faces form fluid conveying passageways through which a jet of fluid is directed toward the outlet, thereby carrying therewith cuttings formed by the spiral faces of the bit.

Abstract: Apparatus is disclosed for extending the reach of a portable chain saw for the purpose of cutting tree limbs and branches which would otherwise be inaccessable to the operator of the saw. An elongated post which can be held in the hands is equipped with means for securing a chain saw thereto at the front end. A pivotable lever is also attached to the front end of the post for contacting and depressing the power trigger on the chain saw. A finger operated control trigger is located at the rear end of the post, and means are provided for connecting the pivotable lever and the control trigger so that the lever is pivoted and the power trigger of the saw is thus depressed by the lever when the control trigger is operated.

Abstract: A method for reducing subterranean formation permeability to brines wherein the formation is penetrated by at least one well bore comprising, injecting into the formation two slugs of an aqueous polymer solution interspaced with a brine slug. A method for reducing the quantity of water recovered from a subterranean formation which is penetrated by at least one well bore wherein in one embodiment prolonged mobility control and/or plugging is maintained with the injection into the formation of slugs of aqueous solutions of at least two distinguishable viscosity increasing agents separated by a brine spacer slug.

Abstract: An apparatus for facilitating penetration of a ground engaging member, such as a plowshare or fence post, into the ground is disclosed which employs a vibrator having a rotatable mass eccentrically mounted to provide a cyclical motion to the member being caused to penetrate the ground. The apparatus is adapted to independently vary the amplitude and frequency of the cyclical motion imparted to the ground engaging member to adjust for varying soil conditions. One embodiment employs a pair of interconnected balanced vibrators which produce a resultant force acting generally along the longitudinal axis of the ground engaging member.

Abstract: The invention relates to the technique of prestressed concrete and concerns a reinforcing device comprising a cylindrical metal tube at the ends of which are friction welded two plates or flanges defining radial support surfaces for bearing on the concrete. One of these plates constitutes an end wall against which abuts a metal core for putting the tube under tension. The other plate, which has a centre aperture, comprises means such as screw threading which co-operates with a bolt for achieving said tensioning in an effective and easy manner. Preferably, the tube has a section which varies along its longitudinal axis so as to afford an improved guide for the core and improve the characteristics of the reinforcement. A particularly advantageous application is in the manufacture of composite railway ties.

Abstract: A cold forged steel grating is formed of a plurality of spaced parallel bearing bars secured to one another by a plurality of spaced parallel cross rods engaged in openings in the bearing bars adjacent their uppermost surfaces with the metal of the bearing bars adjacent the cross rods cold forged into engagement therewith and the metal of the cross rods adjacent the bearing bars flatened by cold forging to forcefully engage the opposite sides of said bearing bars and forming a sturdy rigid grating structure.

Abstract: A muntin bar unitary frame for disposition in confronting planar relationship to a glass pane to provide a visual appearance of the window glazing generally that of a divided glass assembly. The muntin bar unitary frame has a plurality of bars arranged in a desired pattern, with each of the bars being hollow with an internal central planar strengthening web defining a pair of tubular cavities and with a cross-joint where two bars intersect being formed by cutting of the two bars and reducing the thickness of the central web of the two bars to bring the central web surfaces in juxtaposed relation for bonding of the bars together. The planar walls of a bar for disposition adjacent glass panes each have raised ribs along the edge thereof to prevent contact of the planar walls with the surfaces of the glass panes.

Abstract: A floor for roller skating or other sports activities and the like consists of extruded metal deck sections of a required length which are placed side-by-side on an even solid surface. Juxtaposed plastic tiles or plates are laid down on the deck sections and are provided on their bottoms with press studs which interlock with continuous channels or grooves formed in the deck sections. Each plastic tile or plate engages at least a pair of the underlying deck sections and thus the tiles serve to secure adjacent deck sections in assembled relationship in the formation of a continuous floor.

Abstract: The establishment of control of a stack of underwater well head equipment is achieved by preliminarily positioning a locating means at the well head, and then:A. lowering to the well head first and second connector means and effecting reception thereof by the locating means so that the first and second connector means extend in laterally spaced apart relation as determined by the locating means, andB. lowering to the well head crossover third and fourth connector means and effecting generally vertical coupling thereof to the previously located first and second connector means respectively, for operatively interconnecting the first and second connector means via the crossover connector means.The first connector means typically has control line communication with a surface control station, and the second connector means typically has control communication with equipment in the stack.

Abstract: Disclosed herein is a cutter for a rock bit that has an interior bearing race area carburized by pack carburization methods to achieve a high carbon content for extreme hardness. The exterior of the cutter is carburized also, but to a lesser degree, to avoid brittleness in the tooth area. The differential carburizing is accomplished by gas carburizing the exterior while simultaneously pack carburizing the interior. Conventional heat treatment for hardening follows. This results in a cutter having a bearing area much harder than the exterior, giving a long bearing life and reducing tooth breakage.

Abstract: A framework structure comprises longitudinal load-bearing elements and bracing elements interconnecting the load-bearing elements and intended to rigidify the structure and take up transverse forces. To this end the fastening of the bracing elements to the longitudinal elements is realized at least on one side of the structure by connections permitting a certain relative movement between the bracing elements and the longitudinal elements longitudinally of the structure.In such a framework structure as comprises longitudinal load-bearing elements and bracing elements interconnecting said load-bearing elements and serving to rigidify the structure and to take up transverse forces, the ends of the longitudinal load-bearing elements cooperate with jacks to compensate arising displacements.

Abstract: A clip and assembly of two structural channels front-to-back by use of the clip, the clip having a one-channel connecting portion and means for gripping portions of the side flanges of the other channel.

Abstract: This disclosure describes a drilling mast system which is adapted to be assembled section by section in a vertical position, as distinguished from the conventional method of raising a drilling mast by assemblying the mast in a horizontal position on the ground and then lifting the mast into a vertical position. The mast is made of a base section and a plurality of upper sections, each one adapted to be mounted on top of the one below it and fastened thereto. After the base section has been assembled on the foundation, the succeeding sections are assembled on the ground or are lifted in pieces and assembled in place on top of the previous section by means of a floating gin pole. The gin pole is supported inside of the mast by means of a plurality of basket cables.The sections of the mast are made of rectangular horizontal cross section. The floating gin pole extends above the top of the topmost assembled section, and can tilt to the outside of the mast, so as to lift section parts outside the mast.

Abstract: A dwelling for humans comprising a preferably prebuilt housing enclosure which maximizes living space approximately at the eye level of a person seated therewithin. The enclosure is supported above the ground in cradle-like support means which are partially buried and have cradle portions protruding above the ground. The enclosure may be trucked to an installation site since it includes at least one dimension within maximum size limitations for loads to be transported on public highways.

Abstract: An air hammer embodying an outer housing structure connectable to a rotatable drill pipe string through which compressed air is conducted. A hammer piston reciprocates in the housing structure, compressed air being directed alternately to the upper and lower ends of the piston to effect its reciprocation in the structure, each downward stroke inflicting an impact blow upon the anvil portion of an anvil bit extending upwardly within the lower portion of the housing structure. The compressed air acts against the piston over the full internal cross-sectional area of the housing structure in delivering its impact blow, such compressed air acting downwardly over at least a portion of the piston area during its entire downward stroke, including its latter portion, during which the power or impacting air is being exhausted from the housing structure.

Abstract: An anchoring system for mobile homes, trailers and similar vehicles in which a rod structure extending over the top of the vehicle is anchored on opposite sides of the vehicle and a resilient means is incorporated in the rod structure for maintaining tension on the rod structure to maintain the rod structure firmly in effective operating condition. A strap structure extending over the vehicle is anchored on opposite sides and beneath the vehicle, by anchoring devices held by a channel iron in runners or other supporting surfaces for the vehicle. Straps may also be connected to the frame and the anchoring device so that the vehicle is anchored over the top and at the frame by a dual type system.