US1004435A - Pencil-sharpener. - Google Patents

Description

J. J JONES.V rnn'on. smnrnnsn. APPLICATION FILED JUNE 2, 1910.

1,004,435 Patented Sept; 26, 1911'.

UNITED. s'raass PANT OFFICE...

' Specification of Letters Patent.

JOSHUA J. stories, or r'rrrsnune, PENNSYLVANIA, AssIGNon or ONE-HALF 'ro BRABAZON nn'rnnnroonn, or rrrrssune, PENNSYLVANIA.

rENoirrsHaRrENnn.

Application filed June 24, 1910. Serial No. 568,656.

I To all wltomit mag concern:

Be it known that I, JosHUA' J. JONES, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Penoil-Sharpeners, of which the following is a roll or strip of abrasive material, as sand or length of emery paper, adapted to be laid upon a flat straight base-or shelf forming a. part of the device, and secured thereto.

The invention is constructed and adapted for use in the manner hereinafter described;

Referring to the drawings :Figure 1 is a view of the complete device in perspective. Fig. 2 is a side elevation from the opposite side. Fig. 3 is a cross sectional view on the line III. III. of Fig. 2.

In sharpening pencil points or the leads of compasses, etc., sand, carborundum or emery paper is commonly used in a series of layers, the upper layer being removed when used to expose a fresh surface. The thickness of the pad, however, prevents sharpening of lead for drawing instruments such as a bow compass, without first opening it, and as it is frequently desirable to sharpen the lead without changing the set of the compass, the thickness of the strip of sand paper and its support, upon which the lead is rubbed, should be reduced to a minimum. A further objection to sand paper strips which are used and then discarded, is that such strips are ordinarily available for their middle portion only.

In my invention, I utilize the entire a continuous strip, in short suc-- cessive portions thereof, as the strip is drawn out, from the main reel. The device as a whole consistspractically of one piece of sheet .metal bent'to provide side pieces 2, 2, extending downwardly at right angles to an intervening integral base 3, the SIClCS.

2. 2, being spaced apart sutliciently far to admit-bf a spool or reel 4, upon which is wound the abrasive material, as sand or emery paper or cloth 5.

The middle intervening portion 3 is extended outwardly beyond the sides 2 for a sufiicient distance as shown, andat one side,

preferably the left side, as shown in Fig.1, the side 2 is extended along substantiall to the end of the base 3, formlng a side wall 6 Such wall firmly supports and braces the shelf 3 and at a point suthciently beyond the side 2 it is offset as indicated at 7, whereby to provide a bearing shoulder for the end of the index finger of the left hand.

By this construction, I provide a pistol grip shape for conveniently holding the device while using the pencil or instrument upon it with the other hand.

The spool 4 carrying the strip 5 of abra' sive material is pivotally mounted between the sides 2 upon the pin 8 of any suitable construction, preferably removable for renewal of the strip. The strip is wound upon the spool with the abrasive face inwardly and the free end of the strip is drawn off of the spool backwardly and bent around the rear edge of the base 3 as indicated at 9 and laid along the full length of the base and secured upon it in any suitable manner as by a clip or fastener 10. A similar clip may also be used at the other end if desired. By this arrangement, it will be seen that a Patented Sept. 26, 1911..

holding kink is formed in the strip at the 7 point 9 and when secured at its other end,

the strip will lie fiat upon the base, with its edge closely adjacent to thefree edge 11 opposite the side 6. By this arrangement the entire thickness of the strip itself and the base 3 is reduced to a minimum while the base is amply braced and provides a rigid support for the strip,by reason of the reinforcing side, formed for secure holding by the hand. 7

The advantages of the invention will be appreciated by those accustomed to the frequent sharpening of lead points. The facility of inserting the base and its thin abrasive strip between the terminal legs of a compass or similar drafting instrument en: ables the user to renew. the point without disturbing the set of the instrument, while itis of equal advantage for an ordinary pencil. The device is verysimple and cheap in construction and-economical of abrasive material, enabling all of the strips surface to be utilized without waste, the used portion being cut off and a new strip being drawn forwardly to any desired extent. It is small and portable, not liable to get out of proportions to suit the user.

What I claim is:

1. A pencil sharpening deviceconsisting or a sheet metal frame having a longitudinal flat supporting base terminating in a thin edge at one side and having at one end integral downwardly bent rounded sides providing-hearings for a rolled strip and also agrasping terminal, an integral supporting and bracing extension of one of said sides and of the supporting base extending longitudinally under one edge of the basetoward the other end thereof and having a. finger-' I. 5 bearing portion, a roll of abrasive-material pivot-ally mounted between the sides havingits free end drawn abruptly over the end of the base and the top thereof, and means securing the end of the strip to the other end of the base, substantially as set forth.

2. A pencil sharpening device consisting of a sheet metal frame having a longitudinal flat supporting base terminating in a thin edge at one side and having at one end integral downwardly bent rounded sides, an integral extension of one of said sides tapering upwardly toward the other end of the base and providinga. support therefor and nger having an offset caring portion, a roll of abraslve material ivotally mounted between the sides having its free end drawn 30 over the top of said supporting base, and means securingthe end of the strip to the .end of the base, substantially as set forth;

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