Registers – Calculators – Bar
Patent
1974-11-01
1977-01-04
Franklin, Lawrence R.
Registers
Calculators
Bar
235 78G, 235 88G, G06G 110
Patent
active
040015513
ABSTRACT:
A calculating device and a mechanical method of calculating win, place and show odds for events such as horse races having pari-mutuel wagering systems. The apparatus includes a base member and a pair of slideable members laterally displaceable relative to the base member. A transparent cursor having a hairline located thereon is also laterally displaceable relative to the base member and to the slideable members. In an alternative embodiment, the members and the cursor are rotationally displaceable relative to the base member. The device is arranged so that indicia on a first scale which represent the amount in a wager pool of interest may be positioned relative to a second scale so that the hairline on the cursor may be adjusted to the amount bet on a horse of interest. The win odds of the horse of interest may be directly read beneath the cursor on a third scale and those odds may be calculated in terms of dollars returnable for a given bet on a fourth scale. To calculate place odds, a reference representing track take-out on the second slideable member is set at the amount bet on the horse of interest on the first scale and the percentage of the pool wagered on the other horse which may be expected to share the pool is read on the second scale. The hairline of the cursor is then positioned adjacent to that percentage found on the indicia of the second slideable member so that the odds may be read on a place scale on the base member at the cursor hairline. Show odds are similarly calculated by summing the amount of the two additional horses which may be expected to share the show pool so that the odds on the horse of interest are read directly on a show scale on the base member.
REFERENCES:
patent: 1145042 (1915-07-01), Spitzglass
patent: 1602479 (1926-10-01), Bulmer et al.
patent: 3053447 (1962-09-01), Azar
patent: 3232531 (1966-02-01), Hodge
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