Abstract: There is disclosed a method of producing sealed end stringers for sliding clasp fasteners from a pair of stringer tapes, each of which is provided on one of its edges with a row of fastening elements. The tapes are first arranged so that the two rows of fastening elements face each other, and then a plurality of spaced apart pairs of strands of plastics material, which are disposed to extend transversely of the tapes, are welded to the tapes so that the tapes are connected together by the strands. The strands are severed in the region between the tapes, and a plurality of guide members of plastics material are formed on the tape edges having the rows of fastening elements, each of the guide members being connected to a respective one of the severed portions of alternate ones of the strands to extend away from the respectively adjacent one of the other strands. The tapes can then be severed between the strands of each pair so as to provide completed stringer pairs with ends sealed by the welded strands.

Abstract: A helicopter fuselage is coupled to a pylon to permit fore/aft pivotal movement of the fuselage relative to the pylon with resilient means connected between the pylon and fuselage to oppose and limit such pivotal movement. Structure is then provided to decouple the rotor control linkages to permit limited fore/aft rotation of the fuselage relative to the pylon upon change of location of the center of gravity without introducing control motion in the control linkages. The control linkages include control tubes extending longitudinally of the fuselage from a pilot input location. Bell cranks are connected to the control tubes and are coupled as to control the pitch of rotor blades. Structure connecting the fuselage and each bell crank alters the pivot points of the bell cranks relative to the fuselage. The positions of the bell crank pivot points depend upon rotation of the fuselage relative to the pylon.

Abstract: A fastening device used in shoe and related closures has a V-shaped resilient wire attached to the opened closure flaps which may be drawn together by sliding a second wire member which is wrapped about it along the diverging portions. The two wire members are both hingedly received within a manipulating member and are retained in place by deforming parts of the manipulating member.

Abstract: In a landing gear for an airframe mounted on a cushioned strut, an airframe mounted portion is guided along a landing gear portion after the landing gear touches down. Crash attenuation is absorbed by a work absorbing tube secured at one end thereof to the airframe portion in an encircling relation with respect to the airframe portion. A work applying structural fitting is secured to the airframe at the other end of the work absorbing tube and is adapted to engage and work the tube as the airframe moves downward relative to the airframe portion to dissipate energy involved in arresting downward movement of the airframe. Coupling structure between the airframe and the airframe mounted portion is provided to fail at a predetermined load to permit movement of the airframe relative to the airframe portion.

Abstract: The invention contemplates a seal construction as for use between relatively rotating parts such as the inner and outer race rings of an antifriction bearing. In such an application, the end of the inner ring is rabbeted to define a cylindrical land and a generally frusto-conical shoulder near one axial end of the raceway, and the outer ring may be conventionally formed for swedged or crimped reception of an annular metal seal cap assembled thereto. The cap metal is formed with an inward skirt having radial-clearance relation of an axially outer portion of the land, and an elastomeric seal member is bonded to the axially inner face of the cap metal, at a location radially offset from the inner edge of the skirt.

Abstract: This disclosure is directed to expansible linkages for use in the manufacture of expansible bands such as wrist watchbands, identification bracelets, and other articles of jewelry, the sides of which when viewed from the top are provided with attractive configurations, for example, tapered from their ends toward their center portions or vice versa. It is also directed to novel methods of making such expansible linkages.The expansible linkage includes two rows of links and resilient means associated with the links for returning them from expanded to contracted positions. It also includes a series of ornamental top shells attached to the top links. The ends of the top shells extend outwardly from the ends of at least a majority of the top links. Solid inserts are positioned within the outwardly extending portions of the top shells and the outer ends of the combined top shells and inserts are machined to provide any desired configuration to the sides of the linkage when the linkage is viewed from the top.

Abstract: A brake for quickly stopping the cutting chain of a chain saw in the event of a kickback or other mishap comprises a narrow band of spring steel which wraps at least 11/4 turns around the drum of the centrifugal clutch by which the chain is driven. One end of the band is anchored while the other end is connected to an operating lever which is rotatable between a released position in which the brake band is released from the drum and an applied position in which the brake band is applied to the drum. The operating lever has a peripheral portion which has an interfering engagement with a cooperating portion on a rotatable actuating lever to which a guard or other sensing member is connected. By reason of this interfering engagement the operating lever remains in one or the other of its positions until forcibly moved to the other position by the guard member operating through the actuating lever.

Abstract: A beadless woven slide fastener has a pair of stringers each with convolutions of a coil of filamentary material attached to a woven carrier tape wherein the tape adjacent the coil is reduced in thickness to accommodate the flanges of a slider.

Abstract: There is disclosed a gas pressure regulator having valving means comprising an orifice sleeve slidably mounted in a bushing which is located in an aperture in a dividing wall in the regulator casing located between the inlet and outlet means of the regulator, for movement toward and from a stationary upstream valve seat carried by the bushing to regulate the flow of fuel gas from the inlet through the regulator to the outlet thereof. To monitor the flow of gas through the meter the bushing has a valve seat adapted to be engaged by a valve operated by a valve stem to control the pressure of the gas at the outlet of the regulator and to shut off the flow of gas into the diaphragm chamber when the pressure of the gas exceeds a predetermined value and the regulating valve for some cause fails to stop the flow of gas.

Abstract: A fastener element is oriented by rolling the element along a friction surface until a projection on the back of the element engages a ledge extending along the path of movement of the element such that the element then slides with a predetermined orientation. Additionally, an orienting element having a sinuous edge for orienting double pronged elements can be retracted.

Abstract: In the manufacture of a slide fastener stringer, the relative count of fastening elements per unit length of the tape of the stringer being manufactured is continuously monitored and used as a feedback control to adjust the relative rate of advancement of either a train of fastening elements or a stringer-tape-forming member.

Abstract: An improved snowmobile construction in which the entire power train from engine to track drive member is rigidly mounted in bearings in a cradle member, and the latter is resiliently mounted on the housing of the snowmobile. In one embodiment the snowmobile skis are also mounted on the cradle member. In a second embodiment the skis are mounted on the housing, and the forward portion of the cradle is additionally interconnected resiliently with the housing.

Abstract: A nail constructed with four head elements extending generally radially outwardly from one end of an elongated substantially cylindrical shank. The head elements are shaped to permit a multiplicity of such nails to be packaged in correspondingly head oriented parallel relation with the shanks of adjacent nails disposed in substantial abutting engagement and with the leading two head elements of each nail in overlapping relation with the trailing two head elements of the forwardly adjacent nail. The head elements are also shaped so that when the nail is driven into a workpiece at least a portion of the head elements will extend across the grain of a wood workpiece irrespective of the orientation of the head elements with respect to the workpiece.

Abstract: An electrically small, directive, low backlobe broadband antenna is described. The antenna comprises a pair of radiators. Each of the radiators comprises a pair of orthogonally oriented stripline sections carried on a thin substrate. In one embodiment the radiators are carried on separate substrates placed side by side with a small separation. In another embodiment, the radiators are carried on opposite sides of the same substrate. In each of the embodiments, the radiators are mounted adjacent to a ground plane. A first one of the orthogonal sections is spaced from and extends parallel to the ground plane. The second of the orthogonal sections extends from the first section to the ground plane and is adapted at that point for coupling to the center conductor of a coaxial cable. Means are also provided for coupling the outer conductor or shield of the cable to the ground plane. A resistor is further provided coupled between the ground plane and the free end of each of the first sections of the radiators.

Abstract: A safety coupling for quickly disconnecting a cutting instrumentality from the power source of a hand-held power tool comprises a pawl on a rotating driving member engaging an abutment on a coaxial driven member. During normal operation a trip arm holds the pawl engaged. When the trip arm is tripped to release the pawl, a latch prevents reengagement of the pawl until reset.

Abstract: Disclosed is a fueling receiver adapted for connection to a tank. The receiver includes a body member which is affixable to the tank. Pivotally attached to the body member is a nipple member which includes a nipple for receiving a fuel nozzle and a fuel shut-off device operable responsive to a predetermined liquid level in the tank to automatically shut-off the flow of fuel from the nozzle through the receiver and into the tank to prevent over-flow of the tank.

Abstract: A high strength buckable rivet made of an alloy consisting of titanium and columbium, the optimum proportion being about 55% titanium and about 45% columbium. The method of making this rivet includes the steps of cold forming a cylindrical blank so as to form a head and shank of the rivet and cold working the head and a portion of a shank of the rivet so as to leave a ductile tail portion capable to form a buck tail, the optimum length of the ductile portion being about 0.8 times the diameter of the rivet shank.

Abstract: A stringer for a slide fastener is formed by assembling head portions of a spiral coupling element through slots in a support member which is folded and secured to retain the spiral coupling element by strap portions between the slots extending at an oblique angle to the folded edge.

Abstract: A tracer mechanism having a stylus to scan the surface of a pattern or a template and to cause a congruent relative movement of a cutter and a workpiece, whereby to reproduce the contour of the pattern or template in the workpiece. The stylus is provided with an axial force element which can adjustably vary the endwise thrust of the stylus, thereby to vary the reaction force of the stylus against the workpiece. As a consequence, the stylus can be caused more accurately to track the pattern or template along a tracing plane, especially on a pattern which has a steep slope that tilts laterally relative to the tracing plane. Means is also disclosed to utilize the axial force element in a machine tool table control wherein a "box-cycle" movement is made in which the cutting tool is withdrawn from the workpiece, is stepped to a new tracing plane, and is returned in a non-cutting motion to the starting point of a subsequent cutting movement parallel to the first one.