Патент USA US2405787код для вставки
Aug. 33, N46. B. GRAFTQN ‘ LEAK-PROOF FOUNTAIN PEN Filed Aug. 4, 1.944 N my? 2,405,787 Patented Aug. 13, 1946 UNITED STATES PATENT QFFICE 2,405,787 LEAK-PROOF FOUNTAIN PEN Bernard GraftornBrooklyn, N. Y. Application August 4, 1944, Serial No. 548,049 1 Claim. (Cl. 120-48) 1 2 The purpose of my invention is to provide apen “ the channel ‘9 which passes through parts C and with a rotary valve structure, consisting of three cylindrical parts held in superposed relation by a rivet, the center cylinder valve alone being r0 tinuous straight alignment with parts A, B and A. When the channel 9 is brought into a con C, a continuous flow of ink goes through the channel 9 from the interior of the barrel I3 into tated in a manner that acts as a shutoff in the the opening, I0, of the pen as shown in Figure 3. flow of the ink from the ink barrel to the pen The three projections 3 of the cap 2 set into the point. This is a novel means of making the pen keyways which are a part of the cylindrical part leak proof. This is accomplished by having the B, shown at 5 and are spaced 120 degrees apart, cap turn a cylinder which opens 01' closes the In or one third of the circumference interiorly with flow of the ink. in the cap; thus when the cap is screwed into ' Referring to the drawing: the pen as shown at 6 and ‘I, the B cylinder is Figure 1 is a fragmentary view of the pen and also caused to revolve and the ink channel in cap. part B is turned away from the channels of A Figure 2 is a sectional View on line 2-2 of Fig 15 and C. The channel 9, is then closed as shown ure 1. in Figure 5 by the turning of cylinder or part Figure 3 is a cross sectional view on the line B. A gasket I5, is placed in the barrel part C, 3—-3 of Fig. 4. making this area moisture tight. The portion Figure 4 is a sectional view on the line 4-4 shown as 16 may be extended to enable an in of Fig. 3. Figure 5 is similar to view shown in Fig. 3 20 terior bladder for the ink to be sealed onto the said portion IS. The circular projections 11 showing segment turned part of a revolution. shown in the Figures 3 and 5 ?t into the'circular Figure 6 is a cross section of line 6—-6 of Fig. 5. recess I‘Ia of the cylinder B. The circular pro Figure '7 is a detail view, partly broken, show jections I8 in Figures 3 and 5 ?t into the circular ing pen point rest and ink channel. 25 recess I8a of the barrel C. The rivet shown as Figure 8 is an end view of ink channel. H, is tightly held by a driving fit to the interior Figure 9 is outside view partly broken of por— tion of barrel of pen point holder. Figure 10 is an end view of Fig. 9. Figure 11 is a cross section of the cap showing projections and threaded portion. I attain these objects by the means illustrated centers of parts A and C as shown in Figs. 3 and - 5. The part B ?ts loosely on the rivet as shown in Figs. 3 and 5. Thus only part B is rotatable 30 on the rivet. To carry out the purpose of my invention, slight changes may be made in the construction of my leak proof pen without departing from the broad in the drawing accompanying this speci?cation, in which i shows the entire pen; 2 is the cap of scope of my invention. the pen; 3 shows the projections which set into 35 What I claim as new and useful is: the keyways of the revolving cylinder 4 and into In a fountain pen, having three parts, said the grooves ‘5; the cap shown as 2 has a thread parts having a channel therethrough for the ink shown as 6 which is turned onto the threaded flow; a rivet passing through and holding to portion shown as ‘I of the body of the pen shown gether the parts in superposed relation; a center as I. The 8 is the pen point rest showing the ink channel 9 through which the ink flows to the 40 portion adapted to be rotated to open or close the valve around the rivet; said rivet holding to pen point I0; the pen rest is tapered so that it gether three divisions of the pen; turning the ?ts into the opening 19a of the pen shown as center portion by 120 degrees being suf?cient to I; the rivet II holds together part A as the pen operate the valve; each of the three parts having point rest and pen point holder, with the re 45 a channel and the channels registering in one volving center cylinder part B which acts as the position of the part B and when part B is rotated, ink cut-o? valve; part C is the barrel portion its channel going out of registry with the channel of the pen also held by rivet I I. A gasket is fit in each of the other two parts; a cap covering ted at I2 into the grooves of A and B. The ink the pen which has three projections therein which flows from the interior I3 of the barrel through the channel 9 in parts A, B and C. The gasket 50 extend into grooves of the center cylinder; said ' I4 is set in B and C into recesses which provide a ‘ cap engaging the center portion and closing or seal against the leakage of the ink to the ex terior and also acts as a tightening means be tween the parts C and B. The part B, which re volves around the rivet II also turns and closes 55 opening the valve as the cap is screwed on or on“ "respectively. BERNARD GRAFTON.