Abstract: A plastic perforative spout for dispensing substances through a sidewall of a plastic container includes a unitary rigid plastic, preferably teflon or polyethylene, perforation element with a protective cap, a dispensing valve removably attached to the perforation element, and an accessory circular adaptor for rounded containers. The plastic cutting element extends from a hollow shank surrounding an opening in a flange portion of a hollow tubular body. Two intersecting cross ribs are formed inside the shank, and a vertical rib extends from the intersection of the cross-ribs to the point of the radius cut semi-circular cutting element. The plastic dispenser is removably attached over the tubular body, and a boss is pressed to displace the flexible concave valve to dispense the container contents through the mouth of the dispenser. A snap lock holds the valve open if desired. The circular adaptor fits over the shank and defines a concave surface for mounting flush against a curved surface.

Abstract: A pivoting handle type winder or door latch actuating handle (1, 2) and a pivoting stay type of window retaining latch (19, 20) for mounting on a movable frame of an openable door or window, and which is co-operable with a corresponding keeper on or in a surrounding fixed frame in order to latch the movable frame to the fixed frame. The latch comprises a latching element (23) which is movable into latching engagement with the keeper when the movable frame is in a closed position with respect to the surrounding fixed frame, and a locking mechanism is provided to lock the engagement of the latching element with the keeper. An elongate arm (1, 2; 19, 20) is coupled with the latching element, and at least two combinations wheels (9) are mounted on the elongate arm and arranged to control the operation of the locking mechanism so that the latch element can only be released from locking engagement with the keeper when a respective predetermined correct combination is set on each of the combination wheels.

Abstract: A method and apparatus for determining electrochemically active components in a process stream. The method comprises the steps of providing a sample in which the components are contained, and depositing the components onto a working electrode, altering the environment of the working electrode so that it is immersed in a supporting electrolyte by effecting a matrix exchange and stripping the deposited electrochemically active components from the working electrode into the supporting electrolyte. The method and apparatus utilize a measurement cell which comprises a vessel (10) for containing the supporting electrolyte and a mercury drop electrode (150).