US2579887A

US2579887A - Selective writing instrument

Info

Publication number: US2579887A
Application number: US735594A
Authority: US
Inventors: John A Vierling
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-19
Filing date: 1947-03-19
Publication date: 1951-12-25
Anticipated expiration: 1968-12-25

Description

De. 25, 1951 J A VIERLING 2,579,887

SELECTJEVE WRITING INSTRUMENT Filed March 19, 1947 Zhwentor JOHN A. VIERLING D Y I Gttorneg Patented Dec. 25, 1951 SELECTIVE'WRITINGINSTRUMENTE John. A; Vi'erling, St; Paul, .Min'n., .assignor' to 1;

Brown & Bigelow, St; Paul, Minn:

ApplicatiouMarchH, 194?,qSerial No; 3735,5594

My. invention relatesto a writing. instrument wherein ink is held withina reservoir andisicareriedito the surface .of=the,.paper,. on.-which:it is desired to .write,,.by means- 01 a steelrball'. The

ink used. in my, writing, instrument. is \contained. Within operable tubular .magazines, and .theball. attracts .the iink when in l. writing position so as to carry the ink onto the surface whenwriting...

Aiprimary; feature-of my writing instrument resides in providing a series of movable ink reservoirs, each havingiindividual writing ball points mounted thereon, which reservoirs areadapted to-=be'--moved"into and outof "writing: position, as.

may be desired. Thus, if a person wishes'to write with: .oneacolorrinm the magazine carrying that-color ink may be projected into writing position readily for use. If a different colorink is desired the: reservoirs are adjusted inrtherbarrel-so thatathe color of ink: which the: person wishes -to use may be put intooperativerwriting position with a writing ball-endprojecting from theforwardaend of the writing-instrument,

It is alsoa feature to providea writingoinstrument wherein the several inkreservoirs,mayabe retracted: into the casing and Jheld' in this positioniwithth'e writing ends onthe'reservoirscovered'by the casing of the instrument to conceal the same when not desired for use. My writing instrument does not require a cap for covering the writing end thereof like the ordinary fountain pen.

Two or more ink reservoir units may be emplayed in my writing instrument which provides a means of virtually instantly selecting the colored ink desired and in a simple manner changing to a different color.

The ink reservoirs may be rather small where a number of colors are desired, so that the barrel of the pen or writing instrument will not be too large for convenient use. The barrel of the pen may be round, square, hexagonal, triangular or any desired shape to accommodate the ink reservoirs which are slidably positioned within the casing.

The ink reservoirs are adapted to be operated in one form of my writing instrument by a screw propelling mechanism within the barrel which may be in the form of a formed or cut screw or a tubing with the thread rolled therein, or in the form where slots are cut in the tube which projects or retracts the writing points. The mechanism includes a right and left-hand thread which operates to project one point when the other writing point is withdrawn. Further, all of the writing points may be moved into a neu- IClaim. (Cl. 120..42.13)".

2 tral position concealed withinrthecasing. of: they writing instrumental These. features; together. with other. details;; objects. and variationanwill be. fully and clearly.

hereinafter set-forth.

In the. drawings forming part of the specificattion:

Figure 1 is a longitudinal cross section of my writing instrument showing one formthereotk,

Figure 2 is an. enlarged.crossflsectionion-,the. line 1-2 "of. Figure.- 1 therslotted sleeve member, however, being: omitted.

Figure, 3 is s an ,enlargedaoross section-:omthe" line: -|--3 -oi?;Figure r1.

Figure .4 is. a detail. of the threa'deaused in l the; instrumentin Figure. 1. V

Figure 5wissa sideview of r the; slottedaguide sleeve. whichsurrou-ndsthe thread. of the-, unit shownin. Figure 4 and whichis adapted to guide. the threaded, crossheadswhich are attached to each unit by: a connecting spring arm.

Figured is an endview of thesleevershowm inFigure 5. v

Figure! is aperspective detailootone-otthe ink .units showing .-the spring armrconnectingrthes threaded crossheadto .the ink unit.

The-writinginstrument A illustrated in..Figurei- 1 shows a pair of ink units B selectively positioned within the casing l I].

The ink units B are hollow tubing and provide reservoirs for a supply of ink such as is used for a ball writing point. The body H of the unit B supports the ink therein. On the forward end of the unit B, I provide a writing ball l2 which is adapted to carry the ink from the chamber of the body I I. Each unit B is supported by the spring arm I3 projecting from the rear thereof to the threaded crosshead M which engages the threads [5 formed in the core member IS. The threads [5 are cut in a right and left-hand direction, and the threads on the crossheads M are formed accordingly, so that when the core member I6 is rotated, the ink units B may be selectively moved into writing position with the writing ball [2 projecting out of the writing tip I! of the instrument A.

The crossheads I4 are held against rotation by the slotted sleeve l8 which is formed with longitudinal slots l9. 1

The threaded core member I 6 is part of the end 20 which is adapted to be rotated by the rear end 2| of the writing instrument A. The guide sleeve [8 is rotatably mounted on the end 20 and interposed between the end member Ill and the threaded core member IS. The sides 22 of the sleeve l8 form spring arms for engaging in the rear end of the casing l and which act to hold the propelling mechanism C removable from the casing l0, when a backward pull is exerted against the rear end 2| of the writing instrument A. A plug 23 is fixed in the inner end of the core member 20 and is formed with an annular shoulder 24 which keeps the threaded sleeve I6 assembled on the end 20 and permits it to rotate freely between the inner end of the sleeve I8 and the annular shoulder 24.

In operation the writing instrument A provides a propelling and repelling mechanism C which frictionally operates the respective ink units B into or out of writing position in relation to the casing [0. Figure 1 illustrates the right-hand ink unit B moved into writing position with the ball l2 projecting from the writing tip l1.

It is obvious that a neutral positionof the writing units B maybe assumed by rotating the end 2| of the writing instrument A to withdraw the writing balls I2 into the casing H) where they are maintained out of writing position when not desired for use. Thus, the writing instrument A requires no cap. The ink units B are virtually identical, and one of the units may carry a blue or dark colored ink while the other unit may carry a supply of red ink. In the pen A, there are just two units B. Thus, this pen is equipped with selective ink units B, either of which may be put into operation by rotating the operating head 2| in either a right-hand or lefthand direction, or both of the units B may be,

more, the advantage of a writing instrument as.

heretofore set forth is apparent because it provides a means of selecting the color of ink desired to be used. This selection may be made virtually instantly by the operator of the writing instrument. It will also be apparent that I have provided within the size of an ordinary pencil or fountain pen a selection of writing ink units, which are ever ready to the user of this instrument by selecting the unit desired and moving it' into writing position.

I claim: 7

In a capless selective writing instrument, a partial casing portion, a sleeve having slots formed therein and a shoulder formed at the rear end of each of said slots, said sleeve secured in the upper end of said casing portion, a threaded core member rotatable within said sleeve, a rear end casing portion secured to the upper end of said core member adapted to rotate said core member within said slotted sleeve, threaded cross heads adapted to engage with said threaded core member and move in said slots of said sleeve between said core member and said casing and to contact said shoulders when said cross heads are moved rearwardly in said slots, spring arms secured to said cross head, ink containers having writing ends formed thereon and secured to said spring arms adapted to be alternately extended or withdrawn through an opening formed in the lower end of said casing by rotating said rear end casing portion. JOHN A. VIERLING.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 940,247 Haring Nov. 16, 1909 1,685,374 Partos Sept. 25, 1928 1,731,683 Rebaylio Oct. 15, 1929 1,786,434 Kohler Dec. 30, 1930 1,903,800 Yamashita Apr. 18, 1933 2,071,510 Durrler Feb. 23, 1937 2,264,463 Tomatsu Dec. 2, 1941. 2,369,080 Schulman Feb. 6, 1945 2,427,068 Randolph Sept. 9, 1947 2,432,061 Chesler Dec. 2, 1947