US1224769A

US1224769A - Lead-pencil.

Info

Publication number: US1224769A
Application number: US11146416A
Authority: US
Inventors: Thomas L Mellick
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-07-26
Filing date: 1916-07-26
Publication date: 1917-05-01
Anticipated expiration: 1934-05-01

Description

T. L. .MELLICK.

LEAD PENCIL.

APPLICATION FILED JULY 26.1916.

1,224,769, Patented (May 1, 1917.

THOMAS L. MELLIGK, 0F PLAINFIELD, NEW JERSEY.

LEAD-PENCIL.

Specification of Letters Patent.

Patented May 1, 1917.

Application filed July 26, 1916 Serial No. 111,464.

To all whom it may concern:

Be it known that I, THOMAS L. MELLICK, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented new and useful Improvements in Lead-Pencils, of which the following is a specification.

This invention relates to an improvement in lead pencils and its object is to provide an indelible lead pencil with means of simple, efiicient and practical character for insuring a continuous and uniform supply of moisture to the point of the by the pencil.

A preferred embodiment of the invention is shown in the accompanying drawings wherein Figure 1 is an elevation of the improved pencil;

Fig. 2 is a longitudinal sectional view thereof on an enlarged scale, and

Fig. 3 is a cross-sectional view thereof.

Similar characters of reference designate corresponding parts throughout" the several views.

The wooden stock 1 of the pencil is provided with a stick of lead 2 in the usual manner and is further provided with along'itudinal bore extending from end to end thereof, parallel to the lead, in which is fit ted a wick 3 whose diameter is relatively small, in practice about one-third the diam eter of the stick of lead 2.

The pencil has at its butt or unsharpened end a reservoir 4. filled with spongy or absorbent material 5 which is saturated withwater, the reservoir suitable liquid, 6. 9. being open adjacent the end of the pencil and the wick 3 conveying the moisture from said reservoir to the sharpened nd of the pencil. The moisture exudes from the exposed end of the wick 3 upon the tapered l and covers the ex-- surface of the wood posed end of the lead stick 2.

The moisture is continuously delivered by the wick 3 at a uniform rate, and is applied to the exposed end of the lead in a suflicient degree to insure the permanence of the lines suitable manner.

pencil in order that the lines may be fixed as they are made.

. age and to\ made by the pencil but not in a sufiicient degree to interfere with the convenient use of the pencil or to cause the lines to run.

The pencil is sharpened in the ordinary manner, the wick belng cut away with the wood and the lead.

The reservoir 4 may be constructed and applied to the butt end of the pencil in a However, it is preferably formed as a separate attachment and is provided with an enlarged extended cylindrical socket-piece which closely fits over the end of the pencil and adjacent the reservoir provides an annular shoulder 7 between which and the end of the pencil a liquid with which the material 5 is saturated.

The outer end of the reservoir 4 is closed by'j a cap 9, which is preferably threaded into the end of the reservoir in order that it may be readily removed when the material 5 or the liquid with which said material is saturated is to be renewed.

When {not in use a shield or be fitted over the sharpened end of the pencil,' both to protect the lead against breakcover the exposed end of the wick 3 and thereby prevent evaporation of the liquid taken up by sald wlck.

The stock of the pencil may be of any desired or I approved construction, that known, resembling the stock of any ordinary pencil in that it is made in mating half sections which are secured together by glue or cement in the well known manner and have complementary recesses which provide the bores for the stick of lead 2 and the wick 3.

I claim 1. A lead pencil comprising a wooden stock inclosing a stick of lead and having an internal bore extending from end to end thereof parallel to the stick of lead, and a wick occupying the bore throughout its length.

2. A lead pencil comprising a wooden stock inclosing a stick of lead and having an internal bore extending from end to end guard 10 may thereof parallel to the stick ofilead and a wick occupying the bore throughout its length in combination with a reservoir adapted to fit upon one end of said stock and inolose anabsorbent material saturated with moisture for transmission by said Wick to the pointed end of the pencil.

Copies of this patent may be obtained for five can ts each, by a'fldr'es'sing'the ""comini ssioner of Patents,

Washington, D. G.