US2791986A - Motorized pencil pointer - Google Patents

Description

May 14, 1957 c. R. TAYLOR lMOTORIZED PENCIL POINTER 3 Sheets-Sheet l Filed July 19, 1955 INVENTORJ v, ATTORNEYS \\Nv\\\\\\\\\\\\\\\\\\v\\\\\\\\\\\ May 14, 1957 c. R. TAYLOR 2,791,986

MOTORIZED PENCIL POINTER Filed July 19, 1 956 5 Sheets-Shee:l 2

-INVENTOR @fa/mmv @L L5 f) 5 BY r@ ATTORNEYS May 14, 1957 C, R TAYLOR 2,791,986

MOTORIZED PENCIL POINTER Filed July 19, 1956 3 Sheets-Sheet 5 :F1 S. El 34 59 wm if. a "wa ATTORNEYS United States MOTORIZED PENCIL POINTER ClarenceR. Taylor, Penfeld, N. Y.

Application July 19, 1956, Serial No. 598,815`

3 Claims. (Cl. 12094) pad provided for thatpurpose, doing all .ofthiswithonehand, and quickly return to his` work, stoppingtheoperation of Vthe device by merely closing the hinged.. cover which1 shuts o .the motor.

A further objectof the invention is to provi'dea novell device in which a` moving or vibrating. sand-paperrj or' emery-paper pad or sheet is contained in a styled housing. and operated by a standardV electricalmotor.

A'. still further objectof the invention .is to. provide. a

device: with' a casingor housingwhich collects and retains:

pencil leadiilingsso' that theycannot escape onto worlc sheets.`

Another object-.of theinvention'is to provide. eflicient' means ina motorized pencilpointer device for retaining an oscillating-:pad'of sandpaper, whereby, whenA the pad has become worn; a newpad can be quickly substituted.

Still anotherobject of thisinvention is to provideza lead filing collector anda pencil wiping pad in amotorized' pencil pointer.

Wit-hthe foregoing andothenobjects in View, Vthis inven. tion comprises ,certain novel constructions, combinations, and-arrangements.of'parts as will-behereinafter fully described, illustrated' in lthe accompanyingdrawings, and more particularly pointed outin the appended claims.

In -the t drawings:

Figure 1 is .a top plan View; taken substantially onliney 1 1', Figurey 2,' and showingflhe housing'in horizontal' section.V

Figure'Z isa side View of the-device,- the housing-being shown in section.

Figure isla" transversetsectional ViewV takenon line 3--3, Fig. 2, and-lookingin the direction ofthe arorws.

Figure 4 is a transverse, vertical sectional viewtaken substantially on line 4 4, Fig, 1, and looking in `the direc-- tion of the arrows.-

Figure r5 Visacentral, verticalsectional view taken on line 5-5, Fig. 1, and looking ink the direction of ythe arrows..

Figure 6 is` a fragmentary, sectionalV view showing .the

cover ofthe deviceinaraised position, anda pencil or the like as it appears wh'cn the' point is being operated upon.

Figure 7 is a fragmentary sectional vieu/"taken on line' 7 7, Fig. 6, andlookingin the direction of the arrows.

Figure 8l is-a perspectivewiew of the' retainingmeans for the steel pin.'-

Figure 9 is Ya transverse vertical sectional view taken onl line 9-9",-Figure1, and vlookingin the'direction 'of the arrows.

Figure lO'isVv a similarviewto FigureV 9,1 except that the lid or cover-of1 the-deviceis-shown inY- a raised orfop'en position.

atent' O 27gi1 Patented May 14, 1957 ICC Figure: 111' isa perspective: view ofi the' upper facefof the*-l actu'atingiplate, while Figure 112'lisa1bo'tt'om viewfofi this plate.

FigureA 13'- is arpierspec'tive viewof the-platevw'hich is actuated byl the eccentric pinof the-motor shaf'tl.

Figuref1'4isan enlarged-perspective view tolillus-tr'ate' the positioning:` of the eccentricpin onv the' rotor.

Figure 15S isa'r perspective viewofthe" plate or unithaving two: abrasive surfaces of'difierentqualities.

Referringtothe; drawings by numerals', 1designates`lth`e housing.' or.' casing which]` maybe-mad'e of any suitable* material. Mountedon-tliec'asingY 1' isy a' lid or cover 2i Thefc'asing rests-onza' projecting-'part 3, Fig. 5 oftheba'se 4-with; anupstandingfpartS of the-base4 projec'tihgia'l distance up into the casing'- 1- asrshown, which forinsanz admirable seal` for' preventing dust o'r foreign materia-1vvresultingrfro'mlhe 'sharpening of-the' point from escapiiigl from the casing;

Supported uponithe b'ase 4 is a'- flat metallic plate-`1ike" frame' 6?to'whichisassembledthe motor winding 7 L' The 'Y Casing 1 iS provided with a notch, not shown, throughs.

whichpassesV the electric cord, Fig; l, this electriccord being'attache'dlby wire9-.to the motor and the'other wire;

ltlfofcord 8.1islattached'at:11-to the lowerblade 12'of the'switch'l13 Wirea14-'is1attached to the upperblade' 157 f ofzthetswitchLlS: The two bladesV 1-2 and15 are provided witlLconta'ct lugsf1'6, wherebywhen they are' in engage# ment t-hezcircuitlis closedy between thetwo blades 12 and` 15.' 'lheclosing-,fof the circuit by? the blades' being. made' to contact' will startzthe motor 7, which motor is ofja'n'y' standard type, andswiththe motor operating the motorY Ashaft"17fwill tbe'. rotated, on which shaft 17 is the eccentric' bracket structure 29 in which ismounted a portion ofliat' springjllr. The llatl spring30: isheldalso by a lug- 31 (Fig. 5) extending through the spring from the casingl.' The Youter end-ef. spring 30 bears upwardly against the* squared portionv 26' of the cover 2, whereby when the cover is: raisedas'- shown in Figure 6, the cover will'be held in thisv openspositionby'the action of spring' 30. When thef cover -ismoved' to. aticlosed'position, theatf spring 30 will engage the'outer face of the enlarged portion: 26 tending tohold the cover 2 in a closed positionv against i accidental opening.

On the upper switch blade-15' is an upstanding vlug 323'A which*` is adapted tosbe pressedagainst when the cover 2 israisedto the position shownin Figure 10. Thus,-the' metalspring. 30'1Will press against upstanding'lug 32"v causing the switchblades 12 and 15 to contact through i their" corresponding lugs 16, lwhich will automatically start thesmotor (common'structure not shown) which will rotatershaftV 17 "resulting ineccentric pinIlS in 'ap'er-v ture 19 causing plate 2i) to be reciprocated between the guidesZl.- Thenactuating plate 22T-is mountedon studs 33 rthat-are positioned in the apertures 23 of the plate 22;- These studs 33 are fixedv to the'loscillating arms 34.1

The :two-oscillating 'arms 34 are lixedly secured to the?" reduced portion` 36, Fig. 3, the lowercndsof which rests-'-4 on theplate-like frame, and onthetlower end ofthe'po'st- 35 :is: a. second reduced portion. 37 that extendsl Iinto the base; 38 there: arefR two@ bases' -uponlwhich.` the' rotatable' posts 35 are mounted as shown in Figure 3. Each post 35 is provided with a coil spring 39. The upper end of each spring 39 is fastened-at 40 to the post, while the klower end fof the spring bears against a portion ofthe switch constituted by the blades 12 and 15. The springs 39 exert `a -torsional strain upon the posts 3S.

The actuating plate 22 is placed upon the studs 33, Fig. 1, with the lower apron 25 extending outwardly as shown in Figure 6, whereby -any filings from the pencil point will fa'll clear of the interior of 'the casing until the tilings reach the bottom thereof where they may be collected until the operator cleans the casing 1. The formation of the casing lat 3 and 5, Fig. 5, produces an admirable seal whereby the lings or loose substance cannot escape until the operator removes the same.

As hereinbefore indicated the device is placed on a desk or table convenient to the owner so that he can easily reach the cover 2, and upon raising the cover the closing of the circuit from the motor 7 will be caused, causing movement of the motor shaft 17 which will actuate the plate 20, causing it to reciprocate to a degree between the guides 21 resulting in the actuating plate moving in an oscillating manner for the purpose hereinafter described.

A combination sheet of sandpaper 41, Fig. 15, is employed, having `a tine surface 42 and a coarse surface 43, and is placed upon plate 22 with studs 33 extending through the apertures 23a, holding the detachable sheet 4 securely upon the actuating plate. When the operator wishes to sharpen the point of the pencil or instrument he is using, the pencil point is placed rst against the coarse portion 43 of the sheet 41, Fig. 6, and the point is sharpened by frictional contact, since the sheet is rapidly oscillating back land forth. Then when the operator wishes to finish the operation he can move the point to the ne portion 42 and secure the desired finished result. Then he can quickly lower the cover 2 which will cause the blades 12 `and 15 to separate, stopping the motol'.

The casing 1 is provided on each side with an open ended notch 44, Fig. 3. When the cover 1 is on the base, screws 45 are in these notches 44, holding the cover 1 securely in position.

A bracket 46, Fig. 2, is employed, on which is mounted a sponge 47, which sponge will permit the operator of the device to clean the point of the pencil or other instrument that has been sharpened.

It will be understood lthat pencil iilings vibrate off the sandpaper plate or sheet both front and at sides of said sheet; the plate 22 'has the apron 24 for preventing the filings falling over backward of the actuating plate, thereby preventing said filings from falling down into the base of the device; this is an important point since it is desirable to prevent undue soilage of the work sheet.

It is understood that the sandpaper sheet is replaceable, by simply lifting the same off lthe pins or studs 33 and inserting a new one. This can be done Without removing the cover of the unit.

ln Figures 6, 7 and 8 is shown the mounting and retaining means for lthe pivotal pin 27. As shown particularly in Figure 7, the central recess for the pin 27 is shown at S0. The inserts 51 are at the extreme outer ends of the pin 27. There is provided a central retaining member 52. It is to be understood that the inserts 51 are put in place and anchored to the lid 2 by means of liquid plastic cement.

.The blades 12 and 15, Fig. 10, are mounted on spacers 13a and on screws 13b; the said spacers and screws are actually insulators. The long screws 13b serve the purpose of locking the motor stator 6 to the base boss 38.

On the base of the device there is placed a rubber pad 54 to keep the device from moving about on the surface upon which it is resting when the motor is running.

The built-in cord pull, as shown in Fig. 1, is essential from an Underwriters laboratory viewpoint to guard soldered joints againstaccidental strain. It is also to be noted lthat with the cover in place, it will be impossible to reach the contact plate with the standard Underwriter conical test probe.

It is to be understood that by using the springs 39 the dampening of the movement of arms 34 will prevent undue noise. Further, the spring structure shown in Figure 6 for the cover 2 will cause efficient spring action as the elements will move in a smooth manner for the best possible result. l

While I have described the preferred embodiment of the invention and illustrated the same in the accompanying drawings, certain minor changes or alterations may appear to one skilled in the art to which this invention re lates during the extensive manufacture of the same, and I, therefore, reserve the right to make such alterations or changes as shall fairly fall within the scope of the appended claims.

What I claim is:

l. In a device of the class described in combination, a casing, a motor in said casing, a drive shaft extending from said motor, an eccentric on the end of said drive shaft, an actuating plate, parallel guides on the bottom of said actuating plate, a slidable plate mounted for reciprocaJton between said parallel guides, said sliding plate having an aperture therein, said eccentric engaging in said aperture, a pair of pivotally mounted arms swingable in said casing, studs on the free ends of said arms connected to said actuating plate, and an abrasive sharpening sheet secured on the upper surface of said actuating plate.

2. In a device of the class described in combination, .a casing, a motor in said casing, a drive shaft extending from said motor, an eccentric on the end of said driving shaft, an actuating plate, parallel guides on the bottom of said actuating plates, a slidable plate mounted for reciprocation between said parallel guides, said sliding plate having an aperture therein, said eccentric engaging in said aperture, a pair of pivotally mounted arms swingable in said casing, studs on the free ends of said arms connected to said actuating plate, an abrasive sharpening sheet secured on the upper surface of said actuating plate, a hinged cover for said casing above said sharpening sheet, and switch means operable by opening said cover for energizing said motor to reciprocate said sheet.

3. In a device for the class described in combination, a casing, a motor in said casing, a drive shaft extending from said motor, an eccentric on the end of said drive shaft, an actuating plate, parallel guides on the bottom of said actuating plate, a slidable plate mounted for re- `ciprocation between said parallel guides, said sliding plate having an aperture therein, said eccentric engaging in said aperture, a pair of pivotally mounted arms swingable in said casing, studs on the free ends of said arms connected to said actuating plate, an abrasive sharpening sheet secured on the upper Isurface of said actuating plate, a hinged cover on said casing, said cover provided on its inner end with an enlarged portion, a two-bladed switch in said casing under said cover, means operated upon by the enlarged portion of said cover for closing the two-bladed switch only when said cover is in an open position, and' means in said casing :and connected to said motor shaft for electrically operating said shaft when said two-bladed switch is closed by the opening of said cover and said cover remaining in an open position.

References Cited in the le of this patent UNITED STATES PATENTS 1,165,894 Negraval Dec. 28, 1915 2,230,936 Collins Feb. 4, 1941 2,618,240 Haase Nov. 18. 1952 2,715,804' Wickes Aug. 23, 1955 2,738,768 Johnson Mar. 20. 1956

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