Abstract: In order to increase the "sale" or "cost" registering capacity of a standard, conventional three-wheel register (counter) used in gasoline dispeners, a modified price wheel has been developed as a substitute for the lowest-order price wheel of a conventional register. This new wheel carries indicia from zero to 99 and during counting makes one revolution for every one hundred cents' worth of gasoline dispensed. The new wheel has an antibacklash arrangement for eliminating inaccuracies during the counting mode, and has an improved reset stop and a linkage mechanism associated therewith, for providing accurate resetting and for preventing improper operation during the resetting mode.

Abstract: A register designed to count and display cost on a gasoline dispensing pump. The register has a 100 cent wheel which is driven by a stepping motor. As the 100 cent wheel rotates it biases a spring which, after the 100 cent wheel has completed a revolution, incrementally drives a dollar register wheel. Likewise, as the dollar wheel rotates it biases a spring which, after the dollar wheel has completed a revolution, incrementally drives a 10 dollar register wheel. The energy stored in the springs is also utilized to reset the register to zero, such that all of the power utilized to both drive and reset the register is supplied by the stepping motor.

Abstract: A rotary control valve which is actuated by a steel bellows mechanism for use in a gas chromatograph. The steel bellows mechanism changes the valve positions as required by the gas chromatograph operation. An improved spring design provides an even pressure to the disc rotating against the valve body as well as allowing this pressure to be varied. Use of steel bellows and the proper materials for construction of the control valve will allow complete installation in the oven of a gas chromatograph for operation at a maximum temperature of 600.degree. F.

Abstract: A blending-type motor fuel dispensing apparatus operates to blend together, in various proportions, two liquid motor fuels (gasolines) of different octane ratings, to produce various grades of product. The quantity and cost displays, and also the automatic control of the blend during dispensing, are based upon the summation of two sets of pulses, the number of pulses in each set being proportional to the integrated flow rate of a corresponding one of the two fuels. The pulses are counted and multiplied by a price per gallon, which has been previously set for the grade being dispensed, to provide a cost display. A pulse comparison circuit, which compares pulses representative of the flow of one fuel with a percentage (settable for each blend) of the summed pulses, is used to control the proportioning of the two fuels.