Amusement devices: games – Chance devices – Rotating disk
Patent
1993-07-22
1995-08-01
Layno, Benjamin H.
Amusement devices: games
Chance devices
Rotating disk
A63F 500
Patent
active
054374529
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND TO THE INVENTION
The invention relates to a roulette bowl, in particular for use in gambling casinos, having a roulette wheel.
From the French patent specification 810,827 a roulette wheel is known, which, however, does not correspond to the "classic" roulette discs as they are used in casinos. This roulette wheel carries a circular ring put onto an upwardly extending protrusion of the roulette wheel. The fins confining the pockets are screwed to the circular ring in an usual manner.
Within known roulette wheels as they are used in the roulette bowls in casinos, the 37 pockets are recessly disposed and separated from each other by radially extending fins screwed to the roulette wheel. It is known that roulette wheels and roulette bowls are frequently subject to manipulation and that as well the managers as also the gamblers are afraid of manipulations on the gambling apparatus. Just the fins are subject of various manipulations and the invention has at its object to provide a roulette bowl having a roulette wheel for gambling casinos or, respectively, similar establishments, that excludes manipulations as far as possible, that ensures an optimal compromise between a gambling process desired by the manager and by the gambler and that as far as possible excludes apparatus-own inaccuracies in order to avoid a preference of numbers even if this preference amounts to some percent advantage only with regard to a hit or, respectively, winnings.
SUMMARY OF THE INVENTION
According to the invention, a roulette bowl having a roulette wheel of the initially described kind is characterized in that the roulette wheel disc carries a ring having radially extending fins confining the pockets and that the fins confining the pockets are developed in one single piece with the ring that preferably is recessly inserted into a recess of the roulette wheel.
By the integral construction of the fins with the ring or, respectively, with the roulette wheel, a manipulation of the fins is completely avoided. The fins cannot loosen or, respectively, the field width is exactly predetermined and cannot be changed by misplacing of the fins that can be screwed on; thus the statistic frequency of the hits cannot be changed later on. Usually, the fins are inserted by hand when producing the roulette bowl considering an exact radial direction and an exact equal width of the fields. This requires enormous effort that exceeds considerably the effort of a very exact production of an insertion ring having fins integrally moulded thereon, and according to the invention there is the advantage that the fins or, respectively, the field width cannot fraudulently altered later on. The possibility known among gamblers, to change the width of the fins, what cannot be seen with the naked ey, may cause advantages up to an order of more than 3% of an increase of the winnings chances.
Further, the exact manufacture of the insertion ring with the fins enables an improvement of the smoothness and exactness of running of the roulette eel so that the roulette wheel that is bearingly supported in the roulette trough on a trunnion having a flanged portion is optimally balanced; by this reason according to a further embodiment of the invention, the trunnion carrying the roulette wheel together with the recessly disposed inserted ring is constructed integrally with the flange portion and is formed by machining, in particular by turning on the lath and grinding together with the flange portion. Up to now it was usual to form the trunnion carrying the roulette wheel and the flange portion screwed in the roulette bowl at the bottom in two elements and to weld these elements together. By this welding, however, due to heat tensions minor inaccuracies in the alignment of the trunnion with respect to the flange portion or, respectively, to the bottom of the roulette bowl are created despite a subsequent machining, which inaccuracies till now were not of importance because due to the fins inserted (inexact) by hand these relative small inaccuracies were not of
REFERENCES:
patent: 1474488 (1923-11-01), Nelson
Graf Johann
Machac Werner
Layno Benjamin H.
Novo-Invest Development Aktiengesellschaft
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