| 摘要 |
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. The sealing elements are disposed so that they move in a space within a frame located in the wall opening and the operation is such that any oil which is picked up by the supports is deflected either directly downwardly off the support or into inlets defined in the two feed supports which lead to an oil duct defined therebetween and then to an oil discharge which extends downwardly to a location below the machine base, for example, into an oil pan.
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