Abstract: A precision, very low flow rate, lubricant metering apparatus and method for metering lubricant to a tool and workpiece while various machining operations are performed by the tool on the workpiece. The apparatus has a pneumatic air logic unit which delivers a stream of air pulses to a pneumatically driven positive displacement, precision lubricant injector pump at a selectively variable rate. In response to each air pulse delivered to it, the injector pump delivers a selectively variable amount of lubricant to a lubricant delivery line by which the lubricant can be conveyed to the tool and workpiece. When the apparatus is used with a machine tool powered by an air driven motor, an air flow sensing valve is provided which automatically delivers compressed air to the air logic unit only when the air driven motor is consuming compressed air.

Abstract: A prefabricated steel frame building structural system which is assembled with nuts and bolts and required no shop welding or site fabrication. The columns and beams in the building are fabricated from lengths of very high strength, light gauge, stiffened C-channel steel stock. Uniquely designed haunch plates and haunch plate stiffener angles are used for column-beam connections and novel ridge plates and ridge plate stiffener angles are used for beam-beam connections to form the two hinged end wall and intermediate frames for the building. Also used are novel corner girt clips for securing the girts to the corner columns; rake purlin angles for securing purlins to the rake beams; and purlin girt clips for securing purlins to the intermediate beams and for securing girts to the intermediate columns. Each of the mentioned components are designed so that they may be used interchangeably at both the left and right sides of the building, there being no specially designed left and right said components.

Abstract: A lathekin for use in stain glass window construction and the like has a handle with a blade attached to one end. The blade has a main convex edge which is doubly beveled. Spaced along the edge are two pairs of transverse projections. The transverse projections each have a tapered leading edge and a tapered trailing edge on either side of a peak. The peak extends from the edge of the blade inwardly to at least the depth of the channel of the came used in stained glass panel construction. The blade has a trailing edge which is also doubly beveled and which extends from a substantially normal intersection with the main blade edge to form a concave curve with the handle. On the opposite side of the handle is a concave upper edge which intersects with the main blade edge to form a point. A second blade is transversely mounted on the opposite end of the handle.

Abstract: A glazing bead adapted to secure a second, larger thickness of insulated window in a window frame designed to normally receive a first, smaller thickness of insulated window. The glazing bead comprises a plastic extrusion having a resilient, arcuate wall member which engages the window and/or the window frame. Extending outwardly from the wall member is a folded leg member which is inserted between the window and the window frame, thereby compressing it and urging a locking flange on the folded leg member into engagement with the glazing lip on the window frame to secure the glazing bead and the window in place in the window frame. When the glazing bead is snapped into place, the arcuate wall member is compressed and thus resiliently urges said locking flange laterally towards and into engagement with said glazing lip on said window frame. This compression of the resilient wall member also tends to effectuate a seal between it and the window.

Abstract: A water meter wrench adapted to loosen or tighten the meter's box ring or its equivalent while the meter is in its installed location - usually below the ground in a meter box. The wrench comprises a tubular main stem having a torque stabilizing bar attached to its upper end and a pair of water meter engaging forks attached to a support at its lower end, the distance between the forks being selectively adjustable. Within the tubular main stem is carried a socket drive shaft having a head at its upper end and a box ring engager at its lower end. In use, the box ring is engaged by the engager, the separation between the water meter forks is adjusted for the size of the meter, and the forks are engaged with the inlet and outlet portions of the meter. Next, the socket drive shaft is torqued in the desired direction, as with a socket or torque wrench, the drive shaft in turn torquing the box ring engager and hence the box ring.

Abstract: A lightweight, modular chimney heat economizer adapted to replace a portion of the chimney for a combustion heat source in a building. The economizer includes a plurality of flue tubes having their ends welded to a pair of spaced apart tube sheets. Connected between the tube sheets and surrounding the flue tubes are inner and outer casings between which are sandwiched a layer of nonflammable insulation. The upper and lower tube sheets include outwardly extending flanges adapted to enable the economizer to be removeably secured in place so it may be easily installed and easily removed for maintenance and repair. The casings are provided with expansion joints. The top ends of the flue tubes may be flush with or recessed from the top surface of the upper tube sheet, and an upwardly projecting flange may surround the upper ends of the flue tubes to encourage condensed products from the combustion gases to drain into the flue pipes where they may be disposed of.

Abstract: An alignment system with a variable reactance element is provided for detection of the angular alignment of two variably positionable members. The variable reactance elements form two oppositely varying impedances. A preferred embodiment of the variable reactance element consists of a pair of inductive coils mounted on a core element which forms a flux path for each coil. The core has an integral, deflectable central member which forms a common flux path for both coils. Air gaps within the flux path of each coil are located on either side of the central member of the core. Another variable reactance consists of a first inductive coil having a fixed core element forming a partial flux path for the inductive coil and a movable core element positionable relative to the fixed core element with air gaps between the core elements. A second inductive coil having a similar associated core element is placed opposite the movable core element from the first coil element.

Abstract: A device is disclosed for locking a grate or the like to its receiving frame to make difficult the removal of the grate by an unauthorized person utilizing a makeshift tool. The locking device has a spring loaded latching pin carried by supports secured to the grate. The shoulders provided by either a necked portion of the latching pin or by a flange on the latching pin serve to prevent the unlatching of the latching pin against the biasing of the spring by the use of a makeshift tool. In some embodiments the shoulders are inclined at an angle with respect to the longitudinal axis of the latching pin to encourage the slippage of a makeshift tool off from said shoulders to thereby prevent the unlatching of the pin by an unauthorized person using a makeshift tool. In some embodiments, the unlatching hole in the grate is offset from the locking device to prevent the inspection of the locking device by an unauthorized person seeking to discover the manner of operation of the locking device.

Abstract: An inductive pickup clip comprising two telescoping body portions between which is compressed a main body spring and within which are mounted respective core portions. When the clip is closed, said core portions define an opening adapted to receive therethrough an electric wire during use. The end portions of at least one core portion are spring loaded to prevent chipping or breakage of the core portions and to insure correct alignment of the cores when the clip is closed. A bi-stable latching mechanism is employed which, when latched, holds the clip closed, and when unlatched, permits the spring loaded telescoping body portions to assume an open configuration under the urging of the main body spring therebetween. Such a latching mechanism insures that when the slip is closed about the electric wire to be monitored, the user must close it against the force of the main body spring, thereby further preventing chipping or breakage of the core portions.

Abstract: A gingival cord container cap is disclosed featuring a cord dispensing gate mechanism formed by cooperating parts of a pivoted dispensing spout and a cap base in which the spout is socketed. Cord threaded out of the container through a hole in the cap base and through the spout may be withdrawn freely when the spout is swung into alignment with the hole in the base (i.e., the gate-open position). As the spout is pivoted out of such alignment (closing the gate) the cord is pinched and held, so that it may be cut off flush with the aperture of the spout, protectively retaining the remainder in the container. Swinging the spout back into aligned position causes a short segment of the pinched cord to be automatically projected out of the tip of the spout where it can be manually grasped for withdrawing additional cord from the container as needed.