US826837A - Pencil-pointer. - Google Patents

Description

No. 826,837. PATENTED JULY 24, 1906. A. B. DICK.

PENGIL POINTER.

APPLICATION FILED JULY 6, 1905.

UNITED STATES PATENT OFFICE.

ALBERT BQDICK, OF LAKE FOREST, ILLINOIS, ASSIGNOR TO-lA. B. DICK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PENCIL-POINTER.

Specification of Letters Patent.

Patented July 24, 1906.

Application filed July 6, 1906. Serial No. 268,451.

To all whom it may concern:

Be it known that I, ALBERT B. DICK, a citizen of the United States, residing at Lake Forest, 1n the county of Lake and State of Illino1s, have invented certain new and useful Improvements in Pencil-Pointers, of which the following is a specification. I

The object of the invention is to provide 'simple, durable, and eflective mechanism for to gras ing a pencil and feeding the same for-. war for coaction with the pointing or cutting a paratus of a pencilointer in order that t e forward end of suc pencil may be properly pointed. A further object is to so connect this mechanical feedin provision with the cuttin device as to ma e them interdependent an operable from a single source of power.

In carrying out the invention to obtain these ends I employ a pencil-pointer of suitable type-such, for instance, as the wellknown planetary pencil-pointer now on the marketconnecting with the cutters thereof, referably by means of suitable pinions, a fee -screw which therefore is operated interdependently with the cutters. Coacting with such feed-screw I employ a carriage, mounted to slide forward and rearward, such carriage having a chuck so constructed as to be readily opened to permit introduction of the pencil and as readily closed to assure the firm retention of the pencil therein. The connection between the carriage and the feedscrew is preferably movable to operative and ino erative positions, by reason whereof such fee -screw will feed the carria e, chuck, and the pencil carried b such chuc forcoaction with the cutters. the carriage benormal in engagement With the feed-screw, means ma be provided for temporarily terminating suc engagement in order to permit the carriage to be retracted. Conversely, the carriage or an appurtenance thereof may be normally out of engagement with the feed-screw and such engagement effected when it is desired to move the pencil forward to the cutters b the manual operation of a suitable arm or ever.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation, partly in section, of a pencilointer embodying my invention, the chuck being shown in its operative position and a encil being held thereby for coactionwith t e cutters. Fig. 2 is an enlarged detail view illustrating the inoperative position of the chuck. Fig. 3 is a central section of the chuck and adjacent parts on a line representing thelongitude of the device. Fig. 4 is a detail view showing the interior of one side of the chuck, one of the members shown in Figs. 1, 2, and 3 being removed for that purpose, as hereinafter described. Fig. 5 is an end view illustrating the carriage, a portion of the chuck mechanism carried thereby, and the means for throwing said carriage and chuck mechanism into operative relation to the feed-screw; and Fi 6 is a detail view illustrating a portion of t e carriage and a modified appurtenance for coaction with the feed-screw, this appurtenance being normally in engagement with said screw, whereas that shown in Fig. 5 is normally out of en agement with that screw.

Re errin more in detail to the drawings, in which simi ar letters denote correspondin parts, A indicates a casing, referably 0 metal, su ported either movab y or rigidly, as desire in a pedestal a and having upwardly-extending sides a and ends a a Operating through an opening in this casing is a tray a, desi ned to receive shavings from ported by the end member a of the casing, a

at its outer ends bearings e oke E carryin f f the cutters e, the op osite or the shafts o ends of said shafts being provided with evelgears e, coacting with the stationary gear B, in order to ive planetary motion to said outters e. mounted is mounted in the end member 0. of the casing-as, for instance, by means of the sleeve F and power may be applied thereto in any suitable manneras, for instance, by means of the crank G. Keyed or otherwise screwed upon such shaft and within the casing is a pinion h, meshing with a pinion h, the latter being mounted upon a feed-screw H, one end whereof is j ournaled in the end member a of said casing, its distant end bein journaled in the opposite end member a 0 said casing. Adjacent to this rearward end said feed-screw is threaded, as shown at h for coaction with the pencil-feeding device presently to be described.

T e shaft on which the yoke E is EIO I have here shown the cutting mechanism as completely covered by a hood a preferably hinged to one of the side members a of the casing thereby protecting said mechanism from dust, &c. The side of said hood is provided with an orifice a, through which the pencil may be fed forward into coaction with the cutters e e. I designates a verticalwing or partition, screwed or formed integral with each of'the side members a/ and projecting inwardly toward the center of said casing.

vL L indicate guide-rods the forward ends whereof are preferably threaded and received in correspondingly-threaded orifices in the wings or partitions I, the rearward ends of said guide-rods projecting through suitable orifices in the end member a. of the casing and the extreme ends thereof being slotted, if desired, in order to permit said rods to be turned into their coactin orifices in said wings I. Slidably mounte upon said iderods L is a carriage M, sup orting the c uck, presently to be describe J ournaled between two downwardly-projecting ears 'm u on the under side of said carriage is a lever having operating-handle n and a threaded lip n, adapted when said handle is depressed to coact with the feed-screw H. Said lever is normally pressed to inoperative position by the coil-spring n In order, therefore, to operate the carriage by means of said feedscrew, it is necessary to depress the handle n of said lever and in the form now under dismission to maintain the same depressed until the pencil has been fed to the cutters, as hereinafter explained. In Fig. 6, however, I have shown a lever O, pivotally carried by the under side of the carriage, and a spring 0, whereby the threaded portion of said lever is normally maintained in contact with the feed-screw H. The handle 0 of said lever 0 may be depressed against the tension of said spring only when it is necessary to retract t e carriage to withdraw a pencil from coaction with the cutters.

Turning now to the chuck mechanism, P designates a cylindrical core through the opening g, in which the pencil may be in-" serted. id core is provided at-both ends with radial slots 12 (here shown as three in number) at each end, and in these slots 0 erate the radially-moving chuck members the inner surfaces whereof are threaded for coaction with the correspondin ly-threaded surfaces s of the actuating-annu us S, which is provided with a handle 8. 'The threads formed on the sides of said annulus are convolute s irals and are at all times in ositive mechanical coaction with the threa s of the inner surfaces of said chuck members R so that when said annulus is moved to the osition in which it is shown in Fig. 2 said 0 uck members will be drawn outwardly from the opening in the core P, thereby presenting a-n unobstructed opening throu h said core for the insertionof said pencil. en, however, said annulus is moved to the osition in which it is shown in Fig. 1, (partia movement in this direction being shown in Fig. 4,) the threads s coacting with the corresponding threads on the internal faces of the chuck members R cause said members to be moved inwardly toward ,the center to thereby' firmly 'p the pencil inserted in the orifice p in said core and t0 firm y hold the same therein for the urpose described. As will be understood, t e operation of said actuating-annulus S involves the movement described with respect to the chuck" members R on both sides t ereof, so that the pencil is graspled at six diflierent oints, thereby assuring t e firm retention 0 the same against nndesirable movement, either longitudinal or rotary. It will also be understood that this provision makes the chuck independent of variations in the thickness .of the pencils, allowing ample latitude for pencils of many different sizes. I

If desired, the chuck members B may be loosely held within the radial slots'p, but prevented from moving outwardly from such slots and away from the threaded faces of the actuating-annulus S by means of the ca s T T, secured in any suitable manner-as, or instance, by screws'-to the ends of the central core P.

I have shown the inner ends of the chuck members R as curved corres .ondingly with the curvature of the pencil. This curvature, however, may be dispensed with, and, if desired, the inner ends of said members may be explained to a considerable extent in conneetion with the description of the mechanism. In its extreme retracted position the carri e Mlies adjacent to the end member a of t 'e casing. In order to position the pencil, the

actuating-annulus S is thrown to the osition illustrated in Fi 2 and the pencv inserted through the or fice in the core P, and therefore past the inner ends of the chuck members It, the end of said encil being referably adjacent to the or" ce (1.", in the hood a Said annulus is then turned as in- :dicated by Fig. 4, thereby throwing said chuck members to operative position, where their inner ends will firmly grasp the pencil. If now the carria e be either normally connected with the eed-screw H by means of the lever shown in Fig. 6, or if the lever shown in Fig. 5 be depressed at its outer end, so as to bring the same into coaction with said feed-screw, Fi 5, the crank G may be turned and pIanetary movement thereby transmitted to the cutters e, the carria e being simultaneously fed forward at 'e IIO pro er speed to enable said cutters to neatly an expeditiously remove the surplus wood or other material from the end of said pencil and to form a point of such wood or other material and the lead inclosed thereby. Preferably the threaded portion h of the feed-screw will extend only so far as to feed the pencil a suflicient distance to enable a properly-tapered point to be formed thereon y the cutters 6. After reaching this point the forward movement of the carria e ceases, and further operation of the cran G will therefore be ineffective to further out the end of said pencil. The carria e and the chuck and the pencil supported t ereby may then be moved to retracted position in the manner indicated, the annulus S thrown to inoperative plosition, and the encil removed.

W at I claim, and esire to secure by Letters Patent, is

1. In a pencil-pointer, the combination of two rotary cutters or grinders adapted tov operate on opposite sides of a pencil, means for giving a lanetary motion to said cutters,

a threaded s aft connected to said means so as to be actuated thereby, a support for a pencil movable toward and away from said cutters, and a lever having a threaded portion pivoted upon said sup ort and adapted to be turned on its pivot to ring said thread; ed portion into enga ement with said threaded shaft, substantial y as described.

2. In a pencil-pointer, the combination of two rotary cutters or rinders, a yoke having bearings for the spind es of said cutters, gears on said s indles, a stationary gear with which sai gears mesh, a shaft upon which said yoke is mounted, means for rotatin said shaft, a threaded shaft parallel to and actuated by said shaft, a su port for a pencil movable toward and away om said cutters, and a lever pivoted to said support and having a threaded portion adapted to be brought into coaction with said threaded shaft, substantially as described.

3. In a pencil-pointer, the combination of two rotary cutters or grinders, a yoke having bearings for the spindles of said cutters, gears on said spindles, a stationary gear with which said gears mesh, a shaft upon which said yoke is mounted, means for rotating said shaft, a support having an openin therethrough in axial alinement with sai shaft, said support being mounted for movement toward and away from said cutters, a part rotatable on said support, a plurality of clutch members actuated by the rotation of said part to grasp a pencil extending through the o ening in said support, a threaded shaft aral e1 to and actuated by said shaft, and a ever ivoted to said support and having a threa ed portion adapted to coact with said threaded shaft, substantially as described.

This specification signed and witnessed this 29th day of June, 1905.

ALBERT B. DICK.

Witnessesz.

M. H. BURKART, W. G. ARNOLD.

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