US1485181A - Marking device - Google Patents

Description

an 8 a l 9 5 8 1 l ml I NV wmw G GNC .M RD-MD Ma 1 i F Feb. 26 1924.

IN VE/YTOA H15 HTTO HEY Patented Feb. 26, 1924.

RICHARD GBUNTD, F CLEVELAND, OHIO.

1 NG DEVICE.

Application filed December 23, 1921.

To all whom it may concern:

Be it known that I, RICHARD GRUND. a citizen of the United States, residin in the city of Cleveland, in the county 0% Guyahoga and State of Ohio, have invented new an useful Improvements in a Marking Device, of which the following is a specification.

This invention relates to new and useful improvements in marking pens and particularly to a device of this character which can be used for writing or drawing on hard, smooth surfaces.

One object of my invention is to provide a device of this character which can be readily held in the hand and moved over the surface which is to be marked with the same facility as a marking brush or common crayon.

A further object of my invention is to p'ovide a fountain marking pen which can used; for marking the prices of goods on the show windows of grocery stores, butcher shops and the like, for advertising purposes.

Another object of my invention is to provide a marking device of the character indicated which can be cheaply manufactured, which will be very durable and which will form clear cut, unbroken lines when used for writing, printing or drawing.

With these objects in view and with the intention of securing other advantages which will hereinafter appear, my invention consists in the features of construction and combination of parts described in the specification, particularly pointed out in the claims and illustrated in the accompanying drawings.

Again referring to the drawings, Fig. 1 is a view in elevation of a marking pen embodying my invention, Fig. 2 is a section on line 22, Fig. 1, Fig. 3 is a section on line 3-3, Fig. 2, with the marking ball removed.

By referring to the drawings it will be seen that my device comprises a casing or tubular shell which is formed in two sections, the upper section being indicated at and the lower section at 11. The lower end of the upper section 10 is provided with an enlarged portion 12 which has an interior screw thread and an annular shoulder 13. The upper end of the section 11 is provided with an exterior screw thread corre- Serial No. 524,587.

sponding to and adapted to engage with the interior screw thread in the portion 12. The upper end of the section 10 is rovided with a filling orifice 14 which is c osed by a suitable cap 15.

The lower end of the section 11 is preferably tapered or pointed and at the center there is formed a circular opening 17. around the inner wall of the section 11, adacent to said opening 17 is arranged a gasket or packing element 18.

The marking element or pen oint is globular in form as shown at 20 an preferably consists of a ball of soft rubber. The diameter of this ball 20 is greater than the diameter of the opening 17, but the ball is of such a size that a portion thereof can project through the opening 17, when the ball is seated in the gasket 18.

In order to resiliently hold the ball in its operative position, the following arrangement is provided. Directly above or over the ball 20 is arranged a thrust bearing comprising an inverted dish shaped element or ball race 22 which fits snugly within the section 11.

The ball race is adapted to receive hearing balls 23, which are preferably six in number. A cage 24 of the customary type is mounted in the ball race for the purpose of spacing the balls and retaining them in the ball race. The cage 24 is arranged to turn freely in the ball race so that the hearing balls can both rotate on their axes and travel circumferentially of the ball race.

From the upper surface of the thrust hearing a sleeve or tubular member 25 extends upwardly and an opening 26 is formed at the center of the thrust hearing. A circular plate or disk 27 is mounted at the upper end of the section 11, so as to abut a ainst the shoulder 13 at the lower end of t e section 10. This plate 27 is provided with an orifice 28 and a tubular member 29 extends down therefrom inside of the tubular member 25. v

A coil spring 30 is mounted, under tension, between the thrust bearing and the disk 27.

When it is desired to use the pen the cap is removed from the upper end of the upper section and the marking fluid is poured into the reservoir formed by said section. The marking fluid will flow through the tubular members 25 and 29 and over the surface of the soft rubber ball. The casing is then grasped in the hand the same as a pencil and the soft rubber ball is brought into contact with the surface which is to be marked. As the pen is moved over the surface the ball constantly rotates or rolls so that a freshly inked portion of the ball is always in contact with the surface. By the provision of the roller thrust bearing, great freedom of motion is permitted to the ball enabling the operator to write or draw with great facility.

By using the soft rubber ball it is possible to mark on glass, thereby making the device particularly adapted for lettering the windows of stores to announce special prices or bargain sales.

The flow of the marking fluid can be readily regulated by the degree of pressure exerted on the ball and the gasket prevents a too free flow.

What I claim is:

1. A marking pen comprising a tubular casing, consisting of an upper and a lower section detachably secured together, said upper section having a filling opening at its upper end, a cap for closing said opening, said lower section having a circular opening at its lower end, a ball seated in said opening, a thrust bearing arranged above said ball, said thrust bearing having a central aperture and a tubular member extending upwardly from its upper surface, a disk fixed at the upper end of said lower section, said disk having a central aperture and a tubular member adapted to extend down inside of the tubular member on the thrust bearing and a coiled spring under tension arranged between said disk and said thrust bearing.

2. A marking pen comprising a tubular casing consistin of an up or and a lower section detacha ly secure together, said lower section tapering at its lower end and provided with a circular opening, a ball seated in said opening and projectlng below the end of said lower section, a thrust hearing arranged above said ball, said thrust bearing comprising an inverted dish shaped ball race, balls arran ed in said ball race and a cage mounted in said ball race and free to turn therein, and means for yieldingly holding said thrust bearing against said ball.

3. A marking pen comprising a tubular casing, comprising upper and lower sections detachably secured together, the upper section having an interior shoulder near its lower end, the lower section tapering at its lower end and having a circular opening, a gasket arranged within the lower end of the lower section adjacent to the opening there in, a ball seated in said gasket and rojecting through the opening in the end of the lower section, a thrust bearing arranged above said ball, an apertured disk arranged below the interior shoulder on the upper section of the casing and a coiled sprin under tension arranged between said dis and said thrust hearing.

In testimony whereof, I hereunto afix my signature in the presence of two witnesses.

I RICHARD GRUN'D. Witnesses RUDD H. BENLDER, N. L. MCDONNELL.

Images