US90269A - Zmfrovbment in the man u i act l - Google Patents

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FREDERICK G. JENKINS, on BROOKLYN, E p., NEW YORK, ASSIGNOE To JOSEPH EEOKENDOEEEE, OE NEW YORK OITY.

' Laim Para: No. 90,269, daad May 1s, 1869.

DPROVEMENT IN TEE MANUFACTURB OF LEDPEKCIILB The Schedule referred to in these Letters Patent and makingpart of the urna To @chain it may concern Be it known that I, FBEDERQK G. JENKINS, of Brooklyn, county of Kings, and State of New York,

have invented certain new and useful Improvements in the Manufacture of Lead-Pencils; and I hereby declare the following to be a full, clear, and exact description ofthe same, reference being had tothe accompanying drawings, in which 4 Figure 1 represents a longitudinal transverse .ver-- tical section through a die and feed-rolls, arranged in accordance with my invention. T1 Figure 2 is a front elevation of the same. l Y My inventionl relates principally to the forming and finishing of polygonal `lead-pencils, or those pencils whose wooden sheath has a polygonal cross-section.

Round or cylindrical pencils have been heretofore shaped audiinished by means of a rapidly-revolving cylindrical cutter. ASuch a method is. of course inapJ plicable to the manufacture of polygonal pencils, and the only mode which, Vup to this time, Vh-asbeen found" to produce the desired results in the speellliest and cheapest manner, has been to provide a series of cutters, for forming or cutting separately each face of the polygonal pencil, and `t-hen, alter the application of the proper varnish or size, to polish, the pencil by hand.

Two operations are thus required: first, cutting-the faces; second, varnishing and polishing them 4ailier" they have been cut.

The first operation is productive of considerable loss and expense, as the cutting-machinery, with itsseries of cutters, is costly; and, moreover, the pencilstock must be considerably larger than required forthe nished pencil, in order to allow it to be out away to the proper size and shape without'reducingthe pencil below the standard dimensions. Thus there is necessarily a waste of material, and the operation is, moreover, tedious and troublesome.

The second operation is no less objectionable.' Hand labor must be employed to polish the pencils, which itself is more expensive, and requires much more time than if the operation wereperformed by machinery, while, at the same time, the success of the operation depends upon the skill of the workman and his abil-V ity to perform the work properly. 4 The 'object of this invention is labor, and expense required to produce a finished polygonal pencil, to avoid the 'waste'of stock, the employment of hand-labor for polishing, and 'to 4reduce the number of operationsrequired by the mode here-- tofore in use. To this end,

My invention consists in compressing the pencil-l stockin, and forcing it through one` or more station-v ary dies, of a polygonal shape, corresponding to that which is to be given the finished pencil, iii' such Innuner that the wood shall be compressed, inllieu of being cut into the proper form,and shall, at tl e same time,"

polished during its passage through t e die or dies.'

1ro-reduce the time,

a, which may, for inable manner, a stationary die,

for the production of stance, have an octagonal form, an octagonal pencil. i

The octagonal-shaped aperture, or. die b, is largest at the end which the pencil enters, and thence tapers gradually toward the other end, where it has the shape and proportionwhich arcto be. imparted to the 1inished pencil.

The die should, of course, be made of steel or equiv- Aalent material, and its faces should be highly polished and finished; r 4 l J ust in front of the larger end of the die I place one or more sets of feed-rolls', o, in such manner that the point where the-two rolls of each set adjoin each other shall lie in the plane of the die-opening.

Th'e rolls o f each set should be made capable of ,being moved 'toward or away from each other, so as to be adjusted accurately with respect to the die, and

which may be placed between them, and they may be grooved, as shown at d, so as to direct the-pencilstock accurately to the die-opening b'.

The wooden pencil-stock, with enclosed lead,'may be of any ordinary or suitable shape, preferably cylindrical, and of no greater size than required for the finished pencil.

It is first varnished, or provided with the usual coatfeel-rolls, vwhich are in revolution.

v- These rolls immediately carry it forward toward thedie,V into the larger-end ,of which .it enters, andis gradsally carried fforward through the die, and out from its smaller end. i

When thisoperation is finished, it will be found that the pencil-stock, during its through the die,

has' `been gradually compressed info the octagonal tact between the die and the pencilhas polished or burnished the sides of the latter, which, by one short the pencil-stock, stained in the usual manner, may

and compressed and be first passed through the die,

applied.

ln, carrying out my invention, I set up,`in a suit-` to aocordwlth the varying size of the pencil-stockl ing of paint or size,land is then inserted between the form required, and, moreover,that the frictional oon.

operation, is thus simultaneously shaped 'and finished; y

burnished, and then a coat or two of vsrnishcau be.

'1: The unfinished pencils, or pencil-stocks, as they may.

or pressing against the near end of one in ad:-A

directly acted upon by v form which is tolbc given the finished pencil; The

more diesth'e pencil passes through,`the smoother becomes its surface. After which, one orv two coats of varnish will give it a ine polish.

The 'form and arrangement of the apparatus may he varied in many respects, as will be readily pemeilved .v without further explanation, all that is needed to carry outthis invention being, irst, that dieor dies should curred in the manufacture of polygonalv pencils is saved. v

From -a review of the method just described, it Vwilllbe noticed thatthe pencil can oolllpl'es'se/'dy into shape, or, if previouslyl'lsaped by other means, it can' be polished or bnrnis l shaping and bumishing can be 'effected simultaneously; `and itwill hel understood that this process, while intended by -me' to be usedespeeially forthemanufaef of pencils, can be"employed to eeot th'eshapinglj ,orfthe .two operations of or polishing, prboth shapingI and-,polishing of other' articles, the form ofthe die -'or dies being varied, to

`-with theshape to be imparted to the article.

Havingnow described my invention, and themanvvvner-in which the same is or may beearried into -ei'ect,I

1- What I claim,- and desire to secure by Letters Pat 1-. The i shaping and-polishing, polygonal lead-pencils, and like articles, .bythe employment of one or more stationary dieshaving the form required for the iinished article, in which the stockisoompressed into the desired shape, :or polished, aier'being previously shaped; or v both compressed and polished, substantially inthe vmanner and fotthepurpoees set fol-th.

` 2.-1he combination of the stationary compressing and-polishingor .burnishiiigdie or dies, and one ,or more sets of feed-rolls, or their equivalents, for carrying folwld and' forcing the stock through said die or dies, substantially in -the manner and for the purposes set forth. y In testimonywhereol 4have signed my name to thisspecioation, before two snbscribiu witnesses. j FREDERICK G, EN-KINS;

Witnessszj y y wsu-...3* Torun# j' ,Iene

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