US2300583A - Sewing machine oil reservoir - Google Patents

Description

Nov, 3,-1942. l.. c. MARsAc SEWING MACHINE OIL RESERVOIR Filed July 16, 1941 3 Sheets-Sheet 1 Silvan/.m

Nov. 3, 1942. c. MARsAc 2,300,583

SEWING MACHNE OIL RESERVOIR Fi1ed Ju1y 16, 1941 s sheetsfsheet 2 L. C. MARSAC SEWING MACHINE OIL RESERVOIR Nov. 3,'. 1942.,

Filed July 16, 1941 3 Sl'xeeets--Sheet 3 www Patented Nov. 3, 1942 TENT F SEWING- MACHINE 0m RESERVOIR Leonard C. Marsac, Cranford, N. li., assignor to The Singer Manufacturing Gompany, Elizabeth, N. J., a corporation o New Jersey Application July 1 6, 1941, Seriali No. 402,647

2 Claims.

'I'his invention relates to sewing machines and more particularly to that type of sewing machine which is supported within an opening in a tabletop and has a separable oil-containing reservoir associated therewith.

The invention -has for its primary object the provision of improved manually operable means for securing the sewing machine and oil-reservoir together so that they may be readily transported as a unit to and from the table top.

With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

In the drawings- Fig. 1 is a side elevation partly in section and showing the machine and oil .reservoir locked to gether as a unit.

Fig. 2 is a vertical section taken substantially along line 22 of Fig. 1 and illustrating the machine and oil reservoir in operative positions with the locking element retracted from the machine frame.

Fig. 3 is a top plan View of the oil reservoir.

Fig. 4 is a side elevation, partly in section of the locking element.

Fig. 5 is a vertical section through one of the supporting inserts and a corner of the oil reservoir.

As shown in the drawings 8 represents the machine bed which supports the bracket arm terminating in the hollow head I0. Journaled in the head I0 is the usual reciprocatoryneedle-bar II and the presser-bar I2, the former element carrying the needle I3 and the latter element carrying the presser-foot Itfwhich cooperates with the usual feed-dog I5. A loop-taker actuating shaft IB is journaled lengthwise of the machine bed 8 and carries a loop-taker element Il on the end thereof.

A more detailed description of thefeeding and stitch-forming mechanism of the machine may be found in Patent No. 2,206,285 to R. Kaier, dated July 2, 1940.

A pan-shaped oil reservoir I 8 is supported within an opening I 9 in the table-top 23 by means of the four laterally extending ears 2| formed on the reservoir I8 and engaging four shoulder portions 22 formed in the corners of the opening I9. Carried within the groove 23 of the reservoir I8 terial 2t upon which the depending side and end walls 25 of the machine rest. The machine while in operative position as illustrated in Fig, 2I rests, entirely by force of gravity, upon the gasket 2t.

A pair of floating hinge devices, only one set of which is illustrated herein, are provided on the present outt to permit the machine to be swung backwardly to thus expose the reservoir I8. Each hinge set comprises a pin member 6, imbedded in the table top 20 and a fork member l secured in the machine bed 8. The machine is adapted to pivot backwardly about said pins 6. When the machine is in its operative position, as illustrated in Fig. 2, the fork members 'I are disposed slightly above and out of contact with the pins 6. The machine, while in operation, rests entirely upon the gasket 2li and has no connection with the table top 20. As illustrated in Figl the machine bed ii and the oil reservoir I0 form a substantially enclosed and oil-tight chamber.

The oil reservoir I8 is preferably die cast and is formed with an upturned edge 2S extending thereabout and an oil-containing sump portion 2 located in one end thereof. Mechanism is provided, but not herein disclosed, which extends into the sump 2l for the purpose oi distributing the oil from the sump throughout the machine. This mechanism is disclosed in Patent No. 2,206,285, to Kaier, dated July 2, 1940.

The above mentioned ears ZI extend laterally from and are an integral part of the steel insert members 2B, which, in the present case, are anehored in the die cast reservoir I8 as a portion of the reservoir is cast thereabout, as at points lli.

Formed in the bottom portion of the reservoir id isa boss 29 the top edge 3U of which extends above the normal oil level of the reservoir I0 as indicated by the raised indicia 3i formed in the wall of the reservoir I8. The boss 29 is provided with a vertically disposed aperture 32 which is adapted to slidingly receive the shank or rod portion 33 of a locking element.

This locking element comprises a shank por tion 33 one end of which is provided with threads 35 and the other end of which has a knurled head or ,linger portion 36. The threaded portion or locking means 35 of the shank 33 is adapted to be received by the tapped portion 3l of the boss or lug 38 formed on the machine bed S and the operator need only turn, by hand, the head 36 a few times to eilect the engagement. Fig. l shows the reservoir I8 locked to the machine bed 8 by means of the locking element is a gasket of vibration and sound-absorbing maand the lug 38. The Shoulder 39 is Provided 0n the bottom of the vboss 29 for the purpose of forming a stop against Vwhich the knurled head 86 may be tightened to thus force the reservoir I8 iirmly against the side and end`walls 25 of the machine.

When the threaded portion 35 of the locking element is disengaged from the machine lug. or cooperating locking member 38, it drops downwardly under force of gravity so that the thimbleshaped oil-seal 40 engages the boss 28 and covers the aperture 32 to prevent any oil from being splashed out of the reservoir I8. Fig. 2 best illustrates the locking element in its retracted position. The oil-seal 40 is brazed or otherwise secured directly to the shank 33.

From the above description it will be apparent that the lockingelement is adapted to be disengaged from the machine lug 38 during the operation of the machine so that there will be no metallic engagement between the machine and the oil pan I8. 'It may also be understood from both the drawings and the above description that the present improved locking means permits the machine and the oil pan I8 t'o be readily set into and removed from the table top opening I9 as a unit.

Having set forth the nature of the invention what I claim herein is: v

1. In a'sewing machine having a bed with depending side and end Walls, an'd an oil-pan having upturned edges and forming with said bed an enclosed oil-containing chamber; the improvement which consists in the provision of .locking means for securing said sewing machine and oil-pan together, 'said means comprising a vertically apertured boss formed in the lower portion of said pan, the top portion of said -boss extendingabove the level of oil contained in .said pan, a threaded and vertically shiftable rod supported in said boss, a tapped lug provided on said sewing machine bed and being adapted to receive said rod, and oil-sealing means in the form of a thimble-shaped element supported on said rod and being in cooperative relation with the top portion of the boss for the purpose of preventing the escape ot oil through said apertured boss. V

2. In a sewing machine having -a bed with depending side and end walls and being provided with a threaded aperture in its underside, an oil-pan having upturned edges and forming with said bed an enclosed oil-containing chamber, and a vertically apertured boss formedin the lower portion of said oil-pan and within said chamber, the topy portion of said boss extending above the level of oil contained therein; the improvement which consists in the provision of locking means for securing said sewing machine and oil-pan together, said means comprising a vertically shiftable rod supported in said apertured boss and having a locking position and a retracted position, said rod being threaded at its upper end and carrying a inger-piece at its lower end at a point beneath said pan, and an oil-seal in the form of a thimbIe-shaped element secured to said rod at a point beneath the threaded portion thereof, said oil-seal surrounding and engaging the upper portion of said apertured boss when said rod is in its retracted position, said threaded portion of the rod being in engagement with said threaded aperture when said rod is in its locking position.

LEONARD C. MARSAC.

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