US172867A - Improvement in lumber-pencil holders - Google Patents

Description

- O. CLEVELAND.

LUMBER PENCIL-HOLDER. No.17Z,8|67. 'Patented Feb.1,1s'7s.

, i E y I UNITED? i.IM'RROVM'N"{ammenda-Beinen.',Hornsns.- y.

Specication forming. part Lof Let-ters Patent No. 1.772867, "dated Februaryl, 1376 ,applicationrled November 24, 1875.

To all 'whomit may concern:

Be it known that I, OREs'rEs CLEVELAND, o f Jersey City, New Jersey, have invented an Improvement in Lumber-Pencil Holders, ofv

' tion on line 1 ofFig.1; Fig.4,a sectional'view,

showing the operation of the clamping-screw; Fig. 5, a perspective view of the screw; Fig. 6, a diagram of a blank from which the holder may be made; Fig. 7, a perspective view of a cylindrical holder 5 Fig. 8, a section thereof through its screw ,Figz 9, sections of modified forms of the holder.

The object of this invention is to provide the lumber-pencil, or large stick or bar of graphite, with a suitable holder; and to that end it consists of a metal casing provided with a means for adjustably securing the stick of graphite within it, as will be more particularly hereinafter set forth.

Lumber-pencils, as usually constructed, are small sticks of graphite inclosed within wooden casings, which require to be cut away to expose the marking-core. The rapid wearing away of this core, which results from the nature ofthe marking for which the pencil isintended, renders frequent sharpening necessary.

This inconvenience has, to some extent, been avoided by providing a stick or bar `of graphite with a covering of paper or a coating of enamel; but such an article is rendered comparatively useless when reduced to a short length, when, fr0mlack of a suitable holdingsurface, it is unsuited for usev and is discarded. t

By my device the stick of graphite is constantly provided with 'a rigid handle of considerable length, which, while securely holding the stick or bar, permits 'itto be adjusted as its end wears away, to expose a sucient portion to produce the desired marks, until the stick is reduced by wear to a short and valueless piece. I

The holder consists of a tube formed from brass or other metalor of hard rubber or similar material, which tube may have aA square,

octagonal, or any other sectional configuration, as in Figs. 8 and 9, and may be formed by the metal through dies, or be constructed from blanks cutfrom a sheet of material and wrapped about a forming-mandrel, its meeting edges being joined together by rivets, soldering, or by any other mode of seaming or joining metal. It is divided longitudinally' by slots 4 in its opposite sides, which extend to points near each of its ends, as in Figs. 1, 6, and 7. A' bolt, 5, provided with a head, 6, at one end and a screw-thread, 7, at the other, slides in these longitudinal slots 4. This. screw-bolt carries anut, 8, having a shoulder, 9,which, like the head 6, rests` upon the outerfaces l0 of the holding-tube. This bolt is represented with at sides, but it is obvious that itmay be round and have attened portions which'act as guides, A

directing its movements in the slots' 4, and prevent its 'turning when the -nut 8 is revolved. A stick of graphite, of ash'ape conforming to that oi' the holding-tube, andiofa size to readily enter the same, is introduced within the tube until the rearward end of said stick abuts against the screw-bolt 5, when it is at a proper point in the tube to provide for the protrusion of a suitable portion of the stick of graphite at the marking end. The screw-nut 8 is then turned upon the bolt 5, which causes the shoulder 9 and the head 6 to press. upon the free edges 10 of the tube sides and force them inwerdly until they forcibly impinge upon the rear end of the stick of graphite, as in Fig. 4,'

when it may be used in producing marks upon rough lumber without danger of dislodgment. When the protruding end 11 is worn away,

the stick of graphite may be released by unscrewing the nut 8, and be pushed out by pressing forward the screw-bolt the required distance, when the nut may be again .tightened and the stick of graphite secured asl before.

When the screw-bolt has reached the limit of its longitudinal movement, at the end 12 of the slots 4, but a small and Valueless piece of the stick of graphite will remain, which may be withdrawn and a whole or new stick inserted.

In all of the forms shown the side walls of curel y holdthe same.

Though the tubular holder in Figs. 1 and 7 is-shwn ias `closed -fnt itsfrearenmlit `is, mami @.festfth'at itfma-y be? left bpenf-ftttltlmt4 point.

When the holder is` formed by striking or bending up a. blank similar to that sho-wn in Fig. 6, said blank may be cut out of sheet ma.-

terial and bent np'onvthelines leandfastenedg into properV form by any means.

Having thus described my im proved device, what I claim is-f' 1. A holder consisting of a tube slotted longitudinally, and provided with a screw'or clamping itsoppositewallsfor-sides uponfa y yscribing witnesses.

marking-core, substantially vtts shown nud destrinse.

.s2tmmdjnstbleholdeionseeuvinglmaking core, consisting of a tube slotted longitud* --linnlly' at opposite points and a clamping bolt and nut, substantially as shown Imd described. In testilngnyfwhereoflhaxfevsigned my name to this specification in thep're'sence of two sub- A *iQRES'TESq CLEVELAND.

Witnesses:

H. L. MUNSON,

MJ RYAN.

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