Title: Apparatus for preventing circumferential overspeeding of a grinding wheel

Abstract: An apparatus for preventing circumferential overspeeding of a grinding wheel is provided in which a first rejection pin, opposed to the circumferential surface of the grinding wheel, is linked with a second rejection pin through a link mechanism. A slide plate, guided by a cover device for covering a pulley belt connection portion, is engaged with the second rejection pin to be moved therewith radially of a first or second drive pulley being alternatively mounted on a drive motor. When the first rejection pin is manipulated from the forward end to the retraction end of a slot, prior to the mounting of a fresh grinding wheel, the slide plate moves a restraining pin provided thereon into a space to be occupied by the second drive pulley, larger than the first one, so that the fresh grinding wheel can be prevented from being driven by means of the second pulley.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Kobayashi, Akiyoshi (Kariya, JA)
Nakayama, Yukihiro (Kariya, JA)

Application Number: 797616
Filing Date: 1977-05-17
Publication_date: 1978-05-23
Assignee: Toyoda-Koki Kabushiki-Kaisha (JA)
Primary Class(es): 451/294
Other Classes:
US Patent Ref:

2171799	Sep, 1939	Kline	51/134.
3656262	Apr, 1972	Kikuchi	51/134.
3673741	Jul, 1972	Korde	51/134.

Other Refs:
Primary Examiner: Whitehead, Harold D.
Assistant Examiner:
Attorney: Oblon, Fisher, Spivak, McClelland & Maier