Abstract: A sealing and stripping assembly for a packaging apparatus, the assembly includes two shafts which are held in a spaced generally parallel co-extensive relationship with an arm extending from each shaft, and co-operating pairs of closing and stripping bars mounted on the radial extremity of each arm so as to engage a bag material passing through the assembly so as to seal and strip same during a packaging operation, with said arms being driven in synchronism and in opposite rotational directions.

Abstract: A Spanner Wrench includes a handle, a support bar connected to the handle, the bar having holes drilled through it at the respective ends of the bar, and an eccentrically mounted drive pin carrier, the drive pin carrier including a base plate, having a rod mounted on one face thereof near the edge of the plate and having a drive pin mounted on a second face thereof at a position diametrically opposite to the mounting rod position. The mounting rod having a portion opposite to the end mounted on the base plate threaded to accept a nut which when tightened holds the base plate firmly against the bar. The range of adjustment of a Spanner Wrench according to the present invention is approximately four times the length or diameter of the base plate.

Abstract: A continuous process for hydrolyzing alkylene carbonates according to specific procedure whereby the akylene glycol obtained is essentially free of polymeric glycols and contains minimum amounts of dimeric glycols.

Abstract: A device for determining the volume of spraying liquid applied to unit area of ground by spraying equipment. The device includes pulse generators for generating first and second electrical signals respectively representing the rate of supply of liquid and the ground speed of the equipment. A function generating unit receives the two signals and, responding to these signals, produces an output signal representing the product of the ratio between the signals and a predetermined factor. The output signal from the comparator is applied to a meter which provides a visual indication of the output signal, this representing the volume of liquid applied to unit area of the ground. An automatic speed control unit can be coupled to an output from the function generating unit or to the means for generating the second electrical signal. This unit is actuated by an operator when the visual indicator indicates that a predetermined supply of liquid to unit area has been achieved.