US972488A - Pencil-pointer. - Google Patents

Description

I R. A. & A. P. WILSON.

PENCIL POINTER. ArPLIoATIoN FILED MAY 17, 1909.

'i Ei m Kip Z6 I." v y f////////////////////////I k 1re i Patented 001.1119111.v

ROBERT A. WILSON AND ALLEN P. WILSN, OF WATERTOWN, MASSACHUSETTS.

l rnNcrnroINrEn.

Speeication of Letters Patent.

Patented Uct. 11, 1910.

Application led May 17,1909. Serial No.` 496,517.

To all t may concern;

Be it known that we, ROBERT A. WILSON and ALLEN P. WILsoN, citizens of the vUnited States, residing at Watertown, county of Middlesex, and State of Massachusetts, have invented an Improvement in Pencil-Pointers, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

rEhis invention relates to pencil pointers and has for its'objects to provide a device of this class which is composed of comparatively few parts and is, therefore, inexpensive to manufacture, which will accurately center the pencil while it is being sharpened or pointed so that the wood will not be cut away on one side more than on the other, which may be used equally well when secured to the top, side or bottom of a support, and which is so constructed that the cutters may be readily removed when it is necessary to sharpen them, and to otherwise .improve generally pencil Sharpeners or pointers of this type. y

We have shown in the drawings one embodiment of our invention which we will now proceed to describe4 and will then point out the novel features thereof in the appended claims.

ln the drawings, Figure 1 is a vertical section through a pencil pointer embodying our invention on substantially the line :lc-a2, Fig. 3; Fig. 2 is a section on substantially the line y-gh Fig. 3; Fig. 3 is an end view of the stand with the cutter-carrier removed; Fig. 4 shows the cutter-carrier with the cutters shown in dotted lines; Fig. 5 is an end view of the cutter-carrier; Fig. 6 is a perspective view showing the holder for the chip-receptacle.

' The essential elements of our improved pencil pointer are the stand which supports the Operative parts, the cutter-carrier which is journaled in thestand, and the cutters which are sustained by the cut-ter-carrier. The stand is shown at 3 and is provided with a foot portion 4 by means of which it may be screwed or otherwise secured to a support. This stand has formed integral therewith a head portion 5 and anelongated bearing 7 for the cutter-carrier. The head portion 5 is recessed and is provided with the internal gear teeth 6. The cutter-carrier is shown at 8 and it is provided at one end with the shaft orV journal 9 which is journaled in the bearing 7 and which is provided at one end With a handle 10 by means of which the gear is turned, and at the other end said cutter-carrier is formed with the tubular pencil-guiding portionl 11 into which the pencil 1s inserted while it is being sharpcned, as shown by dotted lines Fig. 1. The cutter-carrier is open at its center portion and the interior walls of the tubular pencilguiding portion 11 terminate in tapering or inclined faces 13 which form a rest against which is seated the portion Of the pencil that is acted on by the cutters, these faces 13 being concaved or cone-shaped so as to fit the cone-shaped part of the pencil.

The cutters are shown at 14 and they are rotary cutters provided on their faces with spiral cutting edges. Each cutter has associated therewith a gear 15, the teeth of which mesh with the internal gear 6. Each cutter also is provided with two journals or trunnions 17, 18 which are rotatably mounted in the bearings 19 and 20 formed on the cutter-carrier, there being a pair of such bearings for each cutter. The bearings 19 of each pair are closed bearings, while the bearings 20 of eachl pair are Open bearings. In order to retain the journals 17 in the open bearings 20, we employ a retainer 21 which is herein shown as in the form of a spring coiled about the tubularpencil-guiding portion 11 and having the ends 22 thereof hooked over the journals 17. This construction is provided to facilitate the removal of the cutters, for it will be seen that by simply disconnecting the hooked ends 22 of the retainer from the journals 17, the cutters can be swung laterally out from the open bearings 2O and then the journals 18 may be withdrawn from the bearings 19.

In using the device, the pencil to be sharpened is inserted into the tubular pencilguiding portion 11 until the end of the pen- Asharpening the same; As the pencil is sharpened, the operator will hold it firmly against the faces 13 and because thesev faces are disposed opposite to each other theyserve to center the pencil so that the wood thereof will be cut evenly on both sides. Moreover,

these faces 13 lact as a gage to limit the depth of the cut and thus prevent the wood of the pencil from being splintered by the cutters making too deep a cut at any time.

The journals 17 and 18 of each cutter may be formed integral therewith, or these journals may be the end of pins or stationary Shafts 23 which are inserted through the cutters and on which the cutters are rotatably mounted. The gears 15 may be either integral with the cutters or separate parts rigid therewith, as desired. l

The chips are collected in a chip-receptacle 25 which is adapted to be sustained in different angular positions so that the stand may be fastened to the top or to the bottom of a horizont-al surface, or may be fastened to a vertical surface and yet have the chipreceptacle in proper position to receive the chips. This chip-receptacle is herein sustained by a holder shownas made of a piece of wire bent to form the two arms 27 and the semi-circular portion 28 that partially embraces the head 5. The holder 1s shown as secured in position on the head by the connection 26 which passes around underneath the head and is secured to the two arms 27 The head is shown as circular and is provided with the projections 29, each of which is grooved on its outer end to receive `the portion 28 of the wire. With this construction the holder can be turned about the head so as to permit the stand 3 to be set in an upright position, as shown in full lines Fig. 3, or 1n a horizontal position as shown in dotted lines Fig. 3. v

-It will be seen from the above that our pencil pointer is very simple and comprises few parts; that it can be used equally well in a variety of positions; that 1t will unerringly give to the pencil a symmetrical point because of the centering faces 13, and that the cutters can be readily removed when it is necessary to sharpen or repair them.

We have shown herein one embodiment only of our invention, and therefore do not wish to be limited to the precise construction shown.

Having fully described our invention, what we claim as new and desire to secure by Letters Patent is l 1. In a pencil'pointer, the combination with a one-piece stand havingl integral therewith a head provided wit internal gear teeth and an elongated shaft bearing, of a cutter-carrier presenting at one end a shaft which is journaled in said bearing and by which the carrier is rotatably sustained, said-carrier having on o posite sides two cutter-receiving recesses an at the other end a tubular portion constituting a pencil guide,which tubular portion terminates at its inner end in two opposed tapering faces against which the conical portion of the pencil rests, a bearing extending 'from the cutter-carrier at each endof eachV recess, the bea-rings at one end of the recesses .being open, stationary shafts supported in said bearings, rotary cuttersl occu ying the recesses and rotatably sustainedli said shafts, and means to maintain the s afts in the open bearings.

2. In a pencil pointer, the combination with a stand having integral therewith` an internal gear, of a oneieee rotary cutter carrier journaled in sai pairs of bearin one bearing of each pair eing open, a s aft supporte in each air of bearings, a cutter rotatabl mounte on each shaft, the ends of' the s afts that are received in the open bearings extending beyond said bearings, and a resilient retainer sustained by the carrier and engaging the portions of the shafts that project beyond the open bearings thereby to retain said shafts in the bearings.

3. In a pencil pointer, the combination with a stand having an internal gear, of a cutter-carrier journaled therein and resenting at one end a tubular pencil gui e, said cutter-carrier having pairs of bearings, one bearing of each pair being open, rotary cutters having journals mounted in said.

bearin and a retaining spring encircling the tu ular pencil guide and engaging the cutter journals to retain them in the open bearings.

4. In a ncil pointer the combination with a stan having a hea provided with aninternal gear, of a cutter carrier shaped to present at one end a pencil guide, cutters journaled in the carrier and having gear teeth meshing with the internal gear, a removable chi receptacle, and means separate from said receptacle and movably carried by the stand for su porting the receptacle 1n diiferent anguliir positions about the axis of the carrier.

5. In a pencil pointer, the combination with a stand `havin a head provided -with an internal gear, o a cutter carrier shaped to present at one end a guide, cutters journaled in the carrier and having gear teeth meshin with the internal gear, a

`holder movab y carried by the head and a head provided with holder having a yoke-sha ed portion to names to this specification, in the presence partly embrace the head an provided with of two subscribing Witnesses.

arms, a spring secured to the holder and par- ROBERT A. WILSON. tially embracing the head thereby yieldingly K ALLEN P. WILSON.

5 holding the holder thereon, and a chip re- Witnesses: ceptaele removably sup orted by the arms. FRED MOORE,

In testimony whereo we have signed oul` WILLIAM H. ILIFFE.

Images