Sewing – Elements – Lubricating
Patent
1984-08-06
1985-10-08
Feldbaum, Ronald
Sewing
Elements
Lubricating
184 615, 184 618, D05B 7100
Patent
active
045453128
ABSTRACT:
A tufting machine having a plurality of reciprocating push rods journally mounted in respective push rod housings carried by the head of the machine includes a sleeve having a sealing arrangement for preventing leakage of lubricant past the push rod housing onto the fabric produced. In one form the sleeve has a seal at the bottom, a circumferential groove disposed above the seal opening onto the push rod, and a pair of passageways communicating with the groove. Air may be blown through one passageway to pick up and carry oil from the groove back to the oil supply, or the two passageways may be connected to the inlet of an oil pump mounted in the head, or one passageway may be open to ambient while the other passageway includes a conduit which returns to the inlet of the pump. In the preferred form three seals are disposed within the sleeve vertically adjacent each other with the upper seal inverted relative to the lower two seals. A passageway enters the sleeve between each pair of seals and returns any oil to the inlet of the oil pump.
REFERENCES:
patent: 2837173 (1958-06-01), Ciecior
patent: 3060877 (1962-10-01), Ketterer
patent: 3767013 (1973-10-01), Caldwell
patent: 3773003 (1973-11-01), Marforio
patent: 3981257 (1976-09-01), Kelly
patent: 4419948 (1983-12-01), von Hagen
Feldbaum Ronald
Ruderman Alan
Spencer Wright Industries, Inc.
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