Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1981-02-23
1983-07-19
Smith, James G.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51249, 51253, 51140, 51 40, 51 77BS, 74 58, 408137, B24B 1900, B24B 300
Patent
active
043936270
ABSTRACT:
Sharpening mechanism for moving at a variable speed along the length of the sharp edge of a reciprocating knife used in cloth cutting machines is disclosed. The apparatus includes a driven grinding apparatus (26) such as is known in the art for contacting an edge of a reciprocating knife (24). Driven grinding apparatus (26) is moved by a tubular carrier member (44) which moves the grinding mechanism (26) along the edge of reciprocating knife (24) in a manner also known in the art. A traverse mechanism for moving the carriage along the knife edge includes a guide mechanism (52) attached to tubular member (44) for following left and right hand peripheral threads (34) cut in the drive shaft (32). To achieve the variable speed, the peripheral left and right hand threads (34) cut in drive shaft (32) have a first pitch at an uppermost portion (56) and a pitch different from the first pitch in a lowermost portion (54) such that the traverse speed of the grinding mechanism (26 ) varies at selected portions of the reciprocating blade. In a preferred embodiment, the uppermost peripheral threads (34) have a higher pitch than the lowermost peripheral threads such that additional contact time is available for the grinding apparatus (26) at the lower tip of the reciprocating blade (24).
REFERENCES:
patent: 700970 (1902-05-01), McFarland, Jr.
patent: 3233371 (1966-02-01), Stucker
patent: 3481249 (1969-12-01), Holloway
patent: 3779094 (1973-12-01), La Barre
patent: 4061049 (1977-12-01), Beurrier
Acraloc Corporation
Meislin Debra S.
Smith James G.
LandOfFree
Reversing screw/high-low speed level wind screw does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reversing screw/high-low speed level wind screw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reversing screw/high-low speed level wind screw will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-745083