Abstract: Device for controlling the degree of blowback delay in automatically operable weapons is provided and comprises locking means which are operable to prevent opening of the weapon breech until breech pressures have dropped to generally residual, safe levels. For use with automatically operable pistols the device takes the form of a hammerlock which locks the hammer to the slide, and for use with automatically operable long guns the device takes the form of a boltlock which locks the bolt to the receiver.

Abstract: A die for the formation of semi-closed channels or other complex configurations comprises a male die member and a female die member. The male die member includes a generally circular mandrel, and elastic, workpiece-retaining pressure means; while the female die member includes an elastically deformable matrix having an open, generally U-shaped forming groove in the upper surface thereof. In operation, the workpiece is driven by the mandrel into the forming groove, and the matrix elastically deformed by matrix deforming apparatus to substantially close the forming groove and wrap the workpiece around the mandrel to form the desired channel. The pressure device retains the workpiece in place during forming while allowing sliding movement of the workpiece to prevent damage to the latter. Following channel formation, the mandrel is withdrawn from the forming groove and the matrix returns to its un-deformed position to re-open the forming groove and enable the ready removal of the workpiece from the die.

Abstract: New and improved transplanting device is provided for use in the transplanting of plants and is of particularly simple, lightweight, durable and inexpensive construction which can readily be modified for use with plant pots of widely varying sizes.

Abstract: New and improved safety tagging device is provided which is fabricated from highly visible, durable and weather-resistant materials and which is readily and conveniently, securely attachable to and removable from power transmission and distribution circuit support structures and the like. The device is operable to protectively and conspicuously display, and call attention to, a mark-up card with instructions regarding safety prerequisites attendant the re-energization of de-energized power transmission or distribution circuit.

Abstract: New and improved fuel economization and pollution reductions means for use with carbureted, internal combustion engines are disclosed, and comprise frusto-conical, spiral mixing means which are disposed in the fuel-air mixture passage of the engine to result in more complete fuel combustion, with resultant increase in fuel efficiency and reduction in exhaust gas pollutants.

Abstract: New and improved vibration damper, primarily for power cables, is disclosed and comprises two damper elements having interfaces of vibrational energy absorbing materials in the nature of rubber, and two rigid absorber arm and weight assemblies pivotally connected thereto. In use, vibrational energy is transmitted from the cable by, and under the vibrational energy absorbing restraint of, the interfaces to the absorber arm and weight assemblies for damping of the same. The absorber arms are of unequal length to provide two natural frequencies for the damper, and the vibration weights are readily removable for replacement by weights of different mass to adapt the same basic vibration damper to a wide variety of applications.

Abstract: An arrowhead, spearhead, integral arrow or spear, or other projectile for hunting, with a point of efficient penetrating design and having moveable sharpened blades, pivotally mounted within a slot in the head. The arrangement provides shrouding of the functional cutting surfaces of the moveable blades when they are in a beginning, closed and positively locked position. In response to impact with and penetration into a target, the blades automatically unlock and pivot outward from the enshrouded configuration to a second position where they are fully extended and may perform their cutting function.

Abstract: A safety drive chuck is disclosed and comprises improved bearing, lubrication, seal, locking ring and key assemblies to increase the operational reliability of the drive chuck. Mounting and maintenance of the chuck are facilitated by relocation of the chuck positioning means on the chuck housing, while chuck operation is facilitated by the smoothing of operative cam surfaces.

Abstract: A simplified, multi-carrier dispenser attachment for shower heads is provided and comprises generally circular support means which are mounted externally of the shower head and which support a spaced plurality of different water soluble substances which may be selectively positioned within the stream of water emanating from the shower head for dissolving therein. In at least one position of the support means, no water soluble substance is disposed in the shower water stream, and a number of adjustment means are provided to enable the ready adjustment in the disposition of the respective substances in the shower water stream to optimize dispensing efficiency.

Abstract: Method and apparatus are provided for the determination of the Raylographic information of a body part which is ensonified by acoustical energy pulses by a particularly precisely focused acoustical focusing system to produce acoustical energy echo pulses which are detected in coherent manner. Fourier transformation of the pulses from the time to the frequency domain enables frequency domain deconvolution to provide the impulse response with minimization of mathematical instabilities and distortion of the frequency domain impulse response. Noise extraction and spatial deconvolution filtering are included to respectively maximize signal to noise ratio and minimize distortive effects of body part surface non-orthogonality and combine with the above to provide for particular stability in the overall results and attendant increase in the axial resolution of Raylographic display and in the overall resolution of body part image displays.

Abstract: A transition piece for use in the generally perpendicular joinder of the tubular components of an inflatable life raft is provided and comprises a generally tubular body portion terminating at one extremity in an integral, generally circular attachment flange of generally concave cross section which includes an aperture formed generally centrally thereof to mate with a like aperture in a tubular life raft component to provide for fluid communication through the transition piece between the tubular components joined thereby upon inflation of the life raft. Formation of the transition piece by injection moulding from neoprene rubber is contemplated.