USRE7907E - Improvement in copying-pencils - Google Patents

Description

O. WALPUSKI.

Assignor to J. REGKENDORFER,

Copying Pencil.

I Reissued Oct. 9, 1877.

O Y 6 w 7 'h g l CHARLES wALPUsKI', or YONKERS, Asslcson TOA JOSEPH REcKEnnoRrnn,

-' OF NEW YORK, N. Y.

IMPROVEMENT IN COPYING-PENCILIS.

Specification forming part of Letters Patent No. 192,

dated June 26, 187 7; Reissue No. 1,907, dated October 9, 1877; application filed September 26, 1877. v

To all whom it-may concern: I

Be it known that I, CHARLES WALPUSKI, of Yonkers, Westchester county, New York, have invented certain new and useful Improve ments in the Manufacture of Pencils, of which the following is a specification:

It is my object to produce a pencil the marks made by which can be copied in the same manner and with the same facility that letters written with copying-ink are copied.

This result I have accomplished by the use of coloring matter, essentially soluble, such as aniline, whose marks or impressions on paper will yield a copy on moistened paper in the ordinary copying-press, said coloring matter being mingled with a suitable base and binding medium, such as, white clay and gum used in the manufacture of the cores or slips of ordinary compositions or colored pencils or crayons! In other words,- the marking material in my pencil may be substantially like [that used in ordinary composition-cores or 'slips, save that aniline in quantitysufficient [to cause the marks made with the core to j yield a copy takes the place of or is embodied with the coloring or-marking material used in the ordinary colored or.'composition core.

- In carrying out my invention, I select aniline soluble in water. -I' dissolve itin alcohol and water, and add thereto a proper-proportion of fine prepared clay.v This composition I intimately mix by grinding or otherwise, and subsequently evaporate it in a suitable vessel. To the remainder I'add a binding medium such, for instance, as a solution of gum-tragecanth-unfil the whole mass becomes a plastic paste which can'be readily kneaded and moldedI I The 'clay and gum serve as a base and bind.-

ing medium for the aniline. Both affect the' hardness and consistency of e composition according to the quantity used therein. One compo1'1n'd which gives good results is one hundred parts aniline, fifty parts white clay, and tenparts gum. By varying, however, the proportions of these materials, pencils of various degrees of hardness or softnesscan be-obtained.

When the paste is brought to the desired consistency I press it into any shape that may DIVISION A. I I I I be desired, then allow it to dryperfectly, and

then cut it into the required lengths. I

The pencil-cores thus produced may then be dipped into hot melted grease, and afterward are cooled. The dipping may,however, 1 This completes the probe dispensed with. cessof manufacture, and the cores are ready to be combined with wooden or other sheaths or handles, in the usual way.

According to the color of the aniline, I produce different colors of pencil, and in proportion to the quantity and quality of the clay, or other base and binding medium, I make the pencils of different degrees of hardness or softness.

' Pencils thus made can be used as ordinary lead-pencils; On dry paper they leave an impression like that of an ordinary lead-pencil,

erased with rubber, and onmoist or wet paper the marks made by them appear as'ink.

Letters written with such pencils can be copied in the ordinary letter-copying press with the same facility as letters written in copying-ink.

The copying operation has the effect ofthe assistance of a blotting-pad, ordinary paper-folder, or other suitable presser. This is due to the quantity of coloring matter contained in the composition. r I Copying-pencils, as above described, can be used for marking textile fabrics, wood, &c.,

.where a penor brush could not be conveniently used.

I have above described one convenient way of carrying out my invention, the method being substantially that which is employed in making ordinary composition leads, save that I use. aniline in such proportion as to make the pencil what may be called an ink copying-pencil.

The proportions in which the different ingredients are to be taken will at once be understood by those acquainted with thcart of but more permanent, as the marks cannot be sheath.

making pencil-leads. It will also be understood that in lieu of the clay and gum speei fied, other ordinary or suitable binding media can be employed. I

I would also observe that I do not limit myself to the use of aniline. Any other coloring' matter which will, like the aniline, yield an impression-copy under conditions substantially as hereinbefore specified will answer the same purpose.

The accompanying drawing represents one ordinary form of pencil in' which my invem tion has been embodied.

A is the wooden sheath, with a tapering split end, encompassed by a conical sleeve, B, which screws onto the sheath.- 0 is a core, made of a composition according to my invention, fitting loosely within the sheath, and

held in place by screwing down'the sleeve B onto the split and tapering end of the Having described my invention, and the manner in which the same is or may be car-' ried into effect, what Iv clai'fh, and desire to secure by Letters Patent, is-- 1. An ink-copying pencil haying'fi'a' marking-core or slip composed of a soluble ,coloring matter whose marks will yield a copy on moist paper in the copying-press, in combination with a suitable base or binding medium. substantially as set forth. Y having a marking" 2. The copying -pencil core or slip composed in the main of an aniline coloring matter, substantially as herein set forth.

In testimony whereof I have hereunto signed my name this 19th day of September, 1877.

v CHARLES WALPUS'KI.

Witnesses:

WILLIAM V. A. POE,

LEOPOLD ANSBACHER.

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