Abstract: A sewing machine includes a housing having an oil pan portion defining an oil reservoir with a filter supported on a wall of the sewing machine housing in a position above the reservoir. A pump is employed to direct the lubricating oil upwardly through a pipe connection into the top of the filter and a portion of the oil which is pumped is circulated through a small size tube in a continuous manner such that it is deflected against a viewing glass at the top of the sewing machine and drops down into the operating mechanism contained in the sewing machine housing. In addition, a portion of the oil which is pumped into the filter passes through a removable filter cartridge and into the interior of the filter.

Abstract: A sewing machine having a modular oil reservoir attached to the frame and having a wick disposed above the lubricant level with one end abutting a wall of the reservoir and relies for its wetting upon the vibratory action of the machine during its operation. Normal machine operating vibration causes the lubricant to wet the walls of the reservoir and through capillary action the wick is wetted to supply lubricant to the needle bar and take up mechanism. This serves to supply relatively small but sufficient quantity of lubricant for lubricating purposes and when the machine is shut off, since the wick is not immersed in lubricant, no lubricant is fed through the system.

Abstract: A sewing machine, comprises a sewing machine head with a needle bar bushing supported in the head and a needle bar engaged in the bushing for upward and downward axial movement. The sewing machine includes an oil pan below the head and a scraping wick is engaged around the bar in the bushing and bears against a reabsorbing wick which extends from the scraping wick to the oil pan. The head is advantageously provided with a head cover which covers a recess having a pad which engages against the reabsorbing wick and biases it into contact with the scraping wick. In addition, the construction includes an additional wick which extends in an axial direction from a location above the scraping wick to a location at the lowermost end of the bushing and it is located between separated ends of the scraping wick and provides an oil-conducting connection with the scraping wick.

Abstract: A sewing machine includes a housing located below a reciprocating needle which contains two feed supports which are driven by operating mechanism so that they move through a substantially rectangular course of motion in their own plane. The feed supports include elongated members which extend through an opening in a front wall of a base of the sewing machine, and this wall is substantially closed against the outward splashing of oil by a first gasket which is engaged over the two support members which operate alongside each other and it is mounted so that it moves vertically to accommodate the vertical movement of the members. A second seal is effected by U-shaped sealing elements which engage over respective feed supports from respective opposite sides inwardly so that when the two supports are in alignment, the sealing members form a complete encirculing web.

Abstract: A lubricating arrangement for the raceway of the bobbin case of a rotary sewing machine looptaker having a body with a recess formed by a bottom and a substantially cylindrical sidewall for holding the bobbin case. A hub of the looptaker has an oil collecting chamber in the form of an annular cavity with undercut inside peripheral area. The chamber receives oil supplied from an oil collecting sump. Centrifugal action causes the oil to flow through a conduit located between the oil collecting chamber and the bottom of the recess, via an adjusting device, to the raceway for the bobbin case. For regulating the oil delivery, the conduit is surrounded along a portion of its length by a borehole located in the bottom. An adjusting screw is provided for tilting the conduit in relation to the axis of the loop taker. An oil collecting sump closed by a cover, is in the bottom of the looptaker body. Oil is supplied to the oil collecting sump through a hollow looptaker shaft.

Abstract: A shaft driven overedge sewing machine is lubricated by a pump mounted on a driven shaft which supplies lubricating oil from the machine's sump through an oil passage in the pump mounting shaft. The pump body is mounted for free rotation relative to the shaft and normally retained against rotation, upon rotation of the shaft, and a spring pressed plunger carried by the pump body cooperates with an eccentric cam surface on the shaft to pump oil from the machine sump into the oil passage in the driven shaft to lubricate shaft bearings and the like.

Abstract: A sewing machine loop taker mounting on a drive shaft formed with a loop taker lubricating conduit in which oil leakage out of the mounting is eliminated. The drive shaft is formed with a socket accommodating a hub on the loop taker so that the hub may be formed with a tapered bore into which the head of a lubricant metering screw on the shaft projects.

Abstract: A sewing machine is provided with a lubricating pump that is operated when work feed members of the machine are engaged or released whereby a quantity of lubricating fluid is delivered to the machine mechanism immediately before the mechanism begins to run. A reciprocatory pump is used and supplies the fluid to a manifold having multiple feed apertures over required lubrication locations for the fluid issuing from the apertures to fall onto said locations. The manifold is displaceable as a unit to give access to the mechanism below it.