US549952A - Pencil - Google Patents

Description

(No-Model.) Y.

- F. E. BLAISDELL.

PENCIL.

No. 549,952. Patented Nov. 19, 1895.

UNITED STATES PATENT OFFICE.

FREDERICK E. BLAISDELL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE BLAISDELL PAPER PENCIL COMPANY, OF PENNSYLVANIA.

PENCIL.

SPECIFICATION forming part of Letters Patent No. 549,952, dated November 19, 1895.

Application iiled July 2, 1895. Serial No. 554,684. (No model.)

T0 all whom t may concern:

Be it known that I, FREDERICK E. BLAIS- DELL, a citizen of the United States of America, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Pencils, of which the following is a speciication, such as will enable those skilled in the art to which it appertains to make and use the same.

The object of my invention is to provide a pencil of a new and improved form so constructed that the covering in which the marking-lead or crayon is inclosed may be removed from such marking-lead or crayon section by section, so as to uncover the said lead or crayon little by little as the same is worn away by use without the use of any cutting appliances whatever, in which the lead or crayon, while not secured in any manner to the covering material, cannot easily be drawn or pushed from its covering. This I accomplish by providing the marking-lead or crayon with a covering-hlm of any suitable material which is less lubric than the material of which the marking-lead 'or crayon is composed and inclosing such marking-lead or crayon so covered in a roll composed of a sheet of flexible material provided with a series of weakened lines arranged diagonal to the aXis of the roll,

Yall as shown and described in the following specification, of which. the Y accompanying drawings form a part, wherein similar letters and numerals of reference designate like or equivalent parts wherever found throughout the several views, and in which* Figure l is a View of one of such non-lubriccovered crayons' or marking-leads about to be inclosed in a suitably-formed sheet of covering material. Fig. 2 is a view vof a com? pleted pencil of my improved form, showing a sectionV of the covering material in the process of being stripped from the crayon or marking-lead. Fig. 3 is a View of such nonlubric-c'overed marking-lead or crayon in central longitudinal section thereof as the same appears at one stage of the process of manufacture thereof, and Fig. 4 is la view on an enlarged scale of the bottom portion or pointsection of such non-lubric-covered crayon or marking-lead as the same appears when com- Y pleted and ready for insertion in its covering.

Referring to the dra Wings,the ref erence-let- 'Y ter A designates the marking-lead or crayon; B, the non-lubrlc covering-film of such lead or crayon; C, the crayon-covering proper,

and C the sheet of flexible material out of Y which the crayon-covering C is formed when the pencil is to be of my improved self-sharpening form.

The sheet C is preferably of what is-known as parchmentized paper or of ledger paper, Y

and such sheet is preferably of the same width as the lead is long and of sufficient length to form a roll of about the size of an ordinary lead-pencil when such sheet C Vis rolled tightly around the marking-lead or crayon A. Running lengthwise of the sheet C is a series of weakened lines l, of any desired kind, preferably made by creasing or scoring upon one or both sides of the sheet, by perforation, or

otherwise, by which the sheet C is made easy of separation along each and every one of said lines l into narrow strips 2.

It will be seen from an examination of Fig. 1 that the sheet C is of the form of a parallelogram having two obtuse-angled and two acute-angled corners, and such sheet is preferably provided adjacent to the edge which will form the outer edge of the covering roll with a series of perforations 3, which are preferably of the circular shape shown, of about the diameter of one-half the width of that of the strips 2, and preferably located, as shown, about half an inch from the strip C and centrally of the weakened lines or scorings l.

When the marking-lead or crayon A is formed of a highly-lubric substance, such as plumbago or amiXture of plumbago and other substances, and such crayon is inclosed in a roll formed of a sheet of flexible material, as C', as shown in Fig. 4, the eXtreme lubricity of the lead renders it easy to push or pull such lead or crayon from the inclosin g roll. This of course is a great disadvantage in many ways, especially when the lead or crayon is from any cause broken into short pieces in the cover,

and to overcome this I provide such lead or IOO ping the same in a vessel containing an extremely thin solution of such varnish, thinned by the addition of any suitable solvent thereof. After dipping, the crayon is suspended with the point downward until the varnish has wholly dried thereon, and as the varnish is thin it will flow somewhat toward the lower end of the crayon, so as to forni abead 6, which covers the crayon point, and before the niarking-lead or crayon is iiiclosed in its coveriiig this bead is removed, preferably by iinniersin g the lower end of such crayon for a half an inch or so in a bath of turpentiiie or other solvent of the varnish until such bead has been dissolved from the crayon, so as to leave the point thereof bare. After the marking-lead or crayon has been provided with such non-lubric covering-hlm B the sheet C is provided with a suitable edging of some adhesive siibstance-such as glue, paste, or the like-applied to such sheet along the entire end thereof outside of the line of perforations 3. The inarkiii g-lead or crayon so covered with the noii-lubric iilm B is placed at the end of the sheet C which is opposite to that provided with the adhesive material, adjacent to which is the line of perforations 3, and such sheet C is then rolled tightly around such marking-lead or crayon A into a roll, as shown in Fig. Li, and as soon as the end provided with the adhesive substance comes in contact with the rest of the roll it adheres thereto, and after being allowed to dry the pencil is finished by sawing oli' the superiiuous hollow top portion, and may then, if desired, be varnislied and otherwise ornamented upon the outside. Then so formed, the pencil is from the iirst provided with a conicalpointed crayen-coverin g C, and as soon as the lead or crayon point extending therefrom is worn down to such covering the lowest of the strips 2 adjacent to such point is started from the roll by tearing the saine across adjacent to the first one of the perforations 3, at the point marked 7 in Fig. l, after which suoli strip is easily separated from the roll along the weakened line forming the upper boundary thereof by pulling up'on the end so loosened, as shown in Fig. 2, and when such strip is wholly removed from the crayon it will be found that a section of the covering in the form of a conical helix has been removed therefrom and that a portion of the marking-lead or crayon A equal in length to the width of the strip 2 removed has been uncovered for use, and as this operation is successively repeated with each one of the strips 2 the crayon A is uncovered section by section. as the same is worn away until the crayon has been almost entirely used up and only a short stub is left formed of that portion of the crayon and covering C lying above the last perforation The strips 2 may be separated between the perforations by the iiiigcr-nail or by the point of a pin or any other suitable instrument having a point.

The noii-lubrie covering-film B does not aclhere to thepaper, but prevents the crayon from slipping in the covering C; yet at the same time it is so thin as not to interfere with easy writing, and it wears away as fast as does the lead or crayon itself, and while, as before stated, I prefer to use copal varnish therefor, such film inay be made of rubber, gelatine, or many other substances with e( p1 al effect.

It will be seen that this pencil differs from others in which the crayon is provided with a covering-film of glue or other adhesive silbstances iii that in the other forms of pencils the covering-film adheres both to the crayon and to the covering, and in pencils provided with the covering of the form herein shown, which may be stripped from the crayon section by section, if such film adhered to the covering as well as to the crayon such coverin g could not readily be stripped from the crayon, as the last layer of the covering, bcing glued tightly to the crayon, would have to be whittled or cut from the crayon before the pencil could be used. If desired, however, evcn in my improved forni of pencil, constructed as herein shown,the marking-lead or crayon may have its upper or butt end, or end farthest from the point, glued er otherwise secured to the covering for a short distance; but in all cases the working portion of the crayon (by which term I mean that portion of the crayon which is adapted to be uncovered and worn away by marking before the pencil becomes too short for efficient use) is unattached to the covering-slieet C; but as a crayon without a covering-film of nonlubric material, as herein shown, is shown and described in a former patent to myself, hereinafter more particularly mentioned, as hein g so attached only at its upper end to the erayon-coveriiig I have not deemed it necessary to show such construction herein.

Although I prefer in making a pencil of the improved self-sharpening form shown to use parchmentized paper or ledger paper to form the crayon-coverin g C, there are many other substances-such as thin wood veneer, cloth, die-which may be used, and I do not intend to confine myself to any particular sustaiice either for the covering or for the niarking-lead or crayon or for the film I3, as it is evident that my invention is adapted for use with all kinds of chal ks, crayons, cau sti es, the., and, in fact, any and all substances in the form of sticks which it is desired to un cover piece by piece, as well as for ordinary lead-pencils.

I do not claim herein,b.i'oadly, the selfsharp eiiing pencil having a covering of paper, for the reason that the same is fully shown, de scribed, and claimed in United States Letters Patent No. 461, 9,11, granted to nie October 27, 1891, for an improvement in pencils.

It is evident that many changes in the construction, combination, and arrangement ol' the several parts of my invention other than those mentioned may be made without de- IOO IIO

parting from the scope thereof, and I do not intend to limit myself to any particular construction either of my improved pencil or my improved crayon; but,

Having now particularly described my said invention, what I claim, and desire to secure by Letters Patent, is-

l. A pencil having its marking-lead or crayon provided with a coveringefllm B of less lubricity than the crayon and inclosed in a roll composed of a sheet of flexible material C weakened at intervals, the film B being unattached to the sheet C throughout the working length of the crayon, substantially as described and for the purposes set forth.

2. A pencil having its marking-lead or crayon provided with a covering-fllm B of less lubricity than the crayon and inclosed in a covering from which sections in the form of a conical-helix may be removed one by one so as to uncover the marking-lead or crayon section by section, the film B being unattached to the sheet C throughout the working-length of the crayon, substantially as described and for the purposes set forth.

3. A pencil having its markinglead or crayon provided with a covering-nlm B of less lubricity than the crayonv and inclosed in a roll composed of a sheet of flexible material C bearing weakened lines arranged diagonal to the axis of the roll along which the sheet may be separated, the iilm B being unattached to the sheet, substantially as described and for the purposes set forth.

4. A pencil having its marking-lead or crayon provided with a covering-lm B of less lubricity than the crayon and inclosed in a roll composed of a sheet of flexible material bearing weakened lines arranged diagonal to the axis of the roll, along which the sheet may be separated, the outer edge of the sheet being secured to the roll, and the film B being unattached to the sheet, substantially as described and for the purposes set forth.

5. A pencil having its marking-lead or crayon provided with a covering-film B of less lubricity than the crayon and inclosed in a roll composed of a sheet of flexible material bearing weakened lines arranged diagonal to the axis of the roll, the film B being unattached to the sheet throughout the working length thereof, the outer edge of the sheet being secured to the roll and being provided with perforations 3 adjacent to such edge, substantially as described and for the pur poses set forth.

6. A pencil having its marking-lead or crayon provided with a covering-film of less lubricity than the crayon and inclosed in a covering which may be removed section by section from the crayon without the use of a cutting instrument, the covering-film being unattached to the covering, substantially as described and for the purposes set forth.

Signed in the city and county of New York, in the State of New York, this 11th day of June, A. D. 1895.

FREDERICK E. BLAISDELL.

Witnesses:

F. RICHTER, F. DE LYsLE SMITH.

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