Abrading – Machine – Scouring device
Patent
1993-11-15
1996-01-30
Kisliuk, Bruce M.
Abrading
Machine
Scouring device
451113, 451 66, 451104, 451327, 451 74, B24B 31073
Patent
active
054876966
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus for polishing game media, for example, medals for use in a game machine such as a slot machine and for separating an abrasive therefrom, in which the medals are polished while being lifted up together with the abrasive within a polishing machine, and in which the abrasive is there-after separated from the medals and returned to the polishing machine.
BACKGROUND ART
It has heretofore been known that medals for a game machine, such as a slot machine, and an abrasive are mixed and then stirred to polish the medals, and that the abrasive is thereafter separated from the medals and mixed with medals again for reuse.
The prior art, however, has involved the problem that, when the medals and the abrasive are accepted in order to polish the former by the stirring, excessive forces act on the medals to deform them. Another problem has been that a polishing machine increases in height due to requirements of the treatment and its external appearance does not blend well with the surroundings. A further problem has been that, since the abrasive for use is usually made of a plastic material, the abrasive becomes electrostatically charged in the polishing operation and sticks to the medals and is not easily separated therefrom in an abrasive separation unit.
DISCLOSURE OF THE INVENTION
The present invention is intended to solve the problems as mentioned above and to provide an apparatus which can favorably perform the polishing and separating operations. With this object in mind, the apparatus is so constructed that an intake port for accepting the medals and abrasive is provided on a lower end side of a polishing pipe set upright, while a medal delivery port is provided on an upper end side of the polishing pipe, that a rotatable screw element which lifts up the medals and abrasive while stirring them is mounted inside the polishing pipe, and that a separation unit which separates the abrasive from the medals and which permits the separated abrasive to be fed into the intake port is joined to an upper part of the polishing pipe.
Preferably, a flap which prevents the abrasive from splashing can be interposed at that position of the intake port which communicates with a lower part of a return pipe underlying the separation unit. The polishing pipe can be so formed that its lower portion is curved or crooked at an obtuse angle with respect to its upper portion which is vertically erected substantially straight, while a prime mover for driving the rotatable screw element can be disposed at an upper end of the polishing pipe. The intake port can be provided with a clearance between a lower end of the polishing pipe and that of the screw element, and pitches of the screw element can be formed so as to be smaller in a lower portion of the polishing pipe than in an upper portion thereof.
Furthermore, the polishing pipe can be formed into a U-shape or Z-shape as viewed from the side, upper and lower corners of which are round crooked portions, and the separation unit which allows the abrasive to leak down can be mounted on the bottom of the polishing pipe near the upper round crooked portion. The separation unit can be furnished with a channel element for the medals, which communicates with the medal delivery port and which has abrasive passing apertures, and it can also be furnished with a rotatable sweep member or a rotatable screw member over an upper surface of the channel element. This channel element can be formed flat or semicylindrical. The sweep member can be constructed by forming a helical brush member on an outer periphery of a rotatable shaft. A rotatable sweep member having a helical brush member can be mounted on a shaft inside said channel element if the channel element is made cylindrical. The channel element can be rendered free to be driven and rotated. The separation unit can alternatively be furnished with a cylindrical or semicylindrical channel element, which communicates with the medal delivery port and which has abrasive passing apertur
REFERENCES:
patent: 2760504 (1956-08-01), Spurlin
patent: 3038186 (1962-06-01), Davy et al.
patent: 3965620 (1976-06-01), Dreher
patent: 4803811 (1989-02-01), Birkle et al.
patent: 4970746 (1990-11-01), Brackmann
patent: 4987702 (1991-01-01), Anschutz
patent: 5214883 (1993-06-01), Naumec et al.
Aoyama Moriyuki
Kawashima Kazunari
Muramatsu Meiji
Takemoto Takatoshi
Yoshikawa Masayoshi
Kabushiki Kaisha Ace Denken
Kisliuk Bruce M.
Morgan Eileen P.
LandOfFree
Apparatus for polishing medals for game machine and for separati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for polishing medals for game machine and for separati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for polishing medals for game machine and for separati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-154600