US1742283A - Packing unit - Google Patents

Description

' mm? s- R 1,742,23.

' PACKING UNIT Filed Juna 13, 1927 v r ll-4 Patented Jan. 7, 1930 UNITED STATES PATENT OFFICE SOLOMON M. SAGER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SAGER PEN CORPORA- TION, A CORPORATION OF DELAWARE PACKING UNIT Application filed June 13,

This invention relates to an improved form of a packingunit and one primarily adapted for convenient use ina fountain pen of the plunger filling type wherein said packing is conveniently positioned for the plunger rod to frictionally project therethrough so that when the plunger is withdrawn from the fountain pen barrel preparatory to filling the barrel with ink the plunger rod is thoroughly wiped and dried, thereby affording an arrangement whereby the fingers or hands of a person operating the plunger to fill the fountain pen will not become stained or soiled as has been the invariable result when filling l5 plunger type fountain pens which heretofore have been used.

It is'an object of this invention to provide an improved packing unit adapted to be inserted within the barrel of a fountain pen or 2 the like for the purpose of permitting the plunger stem used in the filling of the fountain pen barrel to be thoroughly wiped and dried when the plunger stem is withdrawn from the barrel of the pen preparatory to a downstroke filling operation.

It is also an object of this invention to provide a packing unit for usein connect on with a lunger rod or the like, said packing unit embracing a metal retaining shell having a plurality of layers of different kinds of material positioned therein and coacting with the plunger stem to wipe and dry the same as the plunger rod is moved through" the packing unit.

It is a further object of this invention to provide a plunger housing with a removable packing unit through which a plunger stem is adapted to be moved to cause the stem to be thoroughly wiped and dried during its move- -nient through the packing unit by the action of adjacently dis osedlayers of cork andof different kinds 0 rubber arranged in a predetermined relation. 1

It is an important object of this invention to provide a plunger stem or the like with a packing unit consisting of a metal retaining shell or sleeve for holding a plurality of laycrs of hard rubber separated by thin layers of cork and a layer of'soft rubber impregnated with graphite or the like.

.5 is an improved 1927. Serial No. 198,461.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

This invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a front elevation of a fountain pen of the plunger type equipped with a packing unit embodying the principles of this invention.

Figure 2 is an enlarged fragmentary longitudinal section of one end of the fountain pen barrel taken on line II-II of Figure 1 and showing parts in elevation.

Figure 3 is a transverse sectional view taken on line IIIIII of Figure 2 illustrating one end of the packing unit.

Figure 4 is a longitudinal section of the packing unit taken on line IVIV of Figure 3 showing a fragmentary portion of a plunger rod associated with the packing unit.

As shown on the drawings:

The reference numeral 1 indicates a fountain pen barrel provided with a removable closure cap 2 equipped with a clip 3. The fountain pen is of the plunger filling type and has slidablydisposed ax-ially therein a plunger rod or stem 4 the outer end of which projects through a closure or retaining plate or disk 5 which is removably threaded into a reduced neck or section 6 of the fountain pen barrel. Engaged on the outer end of the plunger 4 is a plunger knob or handle 7 provided with a knurled rim section 8 to facilitate gripping of the plunger knob. The plunger knob 7 is secured to the end of the plunger rod 4 by 'means of a pin 9 or any other suitable means. Provided in one end of the fountain pen barrel 1 is a shoulder 10 formed byhollowing out the reduced end 6 of the fountain pen barrel to afford a chamber or compartment 11 within the barrel 1 to the inside of the retaining ring 5. Mounted within the fountain pen barrel chamber 11 with one end seated against the shoulder 10 and the other end engaged by the retaining rin packing unit through whic the plunger rod or stem 4 projects. The im proved packin unit comprises a metal sleeve or shell 12 havlng rigidly pressed or engaged in the inner end thereof a hard rubber packing disk or plate 13 provided with a central opening to permit movement of the plunger rod therethrough. Mounted in the metal packing sleeve 12 adjacent the inner face of the hard rubber packing disk 13 are four thin plates or disks 14 made of cork and each provided with a central opening to permit movement of the plunger rod therethrough. The plurality of disks or plates of cork are provided so that a plurality of spaced edges will be provided for coaction with the surface of the plunger rod 4 to wipe the same during the outward movement of the plunger rod through the packing unit preparatory to a downstroke filling operation of said plunger rod when it is desired to fill the fountain pen barrel with ink. Mounted Within the packing sleeve 12 adjacent the innermost cork disk 14 is a thinner hard rubber packing disk 15 provided with a. central opening to permit movement of the plunger rod therethrough. Also positioned within the packing sleeve 12 to the outside of the intermediate hard rubber packing disk 15 is a disk or ring 16 constructed of soft rubber impregnated with graphite or the like. The soft rubber packing ring or disk 16 is held in place by an outer end packing disk or plate 17 constructed of hard rubber and provided with a suitable central opening to permit passage of the plunger rod 4 therethrough.

The different layers of packing are securely pressed within the metal packing sleeve or shell 12 to afford a complete removable packing unit through which the fountain pen lunger rod 4 is adapted to be slidably moved y a person engaging the knurled plunger rod or handle 7 which normally seats against the reduced end 6 of the fountain pen barrel,- as clearly illustrated in Figures 1 and 2 of the drawings.

To fill the fountain pen the cap 2 is removed from the barrel 1 and the pen point is engaged within the neck of a bottle of ink or the like and the plunger rod- 4 is pulled outwardly by means of the knurled knob or head 7, thereby causing any ink remaining in the barrel to be discharged'into the ink bottle. As the plunger rod 4 is pulled outwardly the rod slides through the packing unit and is first acted upon by the inner hard rubber disk 13 which tends to remove the greater portion of ink adhering to the plunger rod. After passing through the hard rubber packing disk 13 the plunger successively passes through the four adj acently disposed cork washers or plates 14 which act to remove the majority of any ink still remaining on the I plunger. The plurality of cork washers or plates 14 are provided so that there will be more cork edges acting on the outer surface of the plunger rod to perform a plurality of wiping actions on the surface of the plunger rod. After passing through the cork washers or plates 14 the plunger 'passes through the intermediate hard rubber or Washer plate 15 and then through the soft rubber disk 16 which is impregnated with graphite so that the soft rubber plate will act as a means for wiping the partially cleaned surface of the plunger substantially dry before the plunger rod passes through the outermost hard rubber disk or washer 17. By using the improved packing unit it will be noted that the projecting end of the plunger rod which extends beyond the closure plate 5 holding the packing unit in position is thoroughly wiped or scraped to not only remove the ink therefrom, but is also wiped dry by the soft rubber disk or washer 16 so that a person operating the plunger rod to fill the fountain pen barrel 1 with ink may readily engage or touch the projecting end of the plunger rod 4 without any danger of staining the fingers with ink adhering to the plunger rod which heretofore has been one of the greatest drawbacks and inconveniences in connection with the use of plunger type fountain pens. After the plunger has been pulled outwardly from the fountain pen barrel 1 the pen point is projected into the ink and the plunger is pushed inwardly until the inner end of the plunger knob or head 7 seats against the reduced outer end of the fountain pen barrel, as

illustrated in Figures 1 and 2. The barrel 1 of the fountain pen is thus filled with ink on the inner or downstroke of the plunger rod 4. It will thus be noted that an improved packing unit has been devised for use in connection with fountain pen plunger rods or the like for the purpose of thoroughly removing any liquid from the portion of the plunger rod which is pulled through the packing unit, and, furthermore, serves to wipe the projecting portion of the plunger rod dry so that the plunger rod may be operated by an individual-without anydanger of soiling ones hands during the operation. While the packing unit has been described in connection with a plunger type fountain pen it will, of course, be understood that said packing unit may be used in different sizes and used in connection with plunger rods, valve'stems, or similar types of mechanisms of any desired size having a s'lidable rod or stem which requires wiping and drying. The packing unit also affords not only the wiping and drying arrangement for the plunger rod, but also acts as a packing to provide a tight non-leaking joint around the plunger rod.

I am aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

I claim as my invention:

A packing unit of the class described comprising a shell, a pair of centrally apertured hard rubber disks securely mounted within said shell, a centrally apertured impregnated soft rubber disk mounted Within said shell adjacent one of said hard rubber disks, a plurality of centrally apertured thin cork disks mounted adjacent one another Within said shell With the outermost cork disk contacting-the other of said hard rubber disks, and a centrally apertured hard rubber intermediate disk mounted Within said shell between theksoft rubber disk and the innermost cork dis In testimony whereof I have hereunto subscribed my name at Chicago, Cook county,

Illinois.

SOLOMON SAGER.

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