US1043130A

US1043130A - Pencil-sharpener.

Info

Publication number: US1043130A
Application number: US64911611A
Authority: US
Inventors: Chester Nash
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-09-13
Filing date: 1911-09-13
Publication date: 1912-11-05
Anticipated expiration: 1929-11-05

Description

C. NASH.

PENCIL SHARPENR. PPLIOATION FILED sEPT.1s,1911.

1 .,043 ,1 30. Patented Nov. 5, i912.

' I 2 SHEETS-SHEET l.

I mul-1mg umm G. NASH. PENCIL SHARPENER. APPLICATION HLBD SEPT.'13,1911.

1,043; 30, Patented Nov. 5, 191g.

v .W y l z 1 d' Rlmwx 4wf Si l WUI.. n .SSN i i* E n N v m N MIN w i1 gml fio PENCIL-SHARPENER.

Specification of Letters Patent.

CHESTER NASH, OF OREGON, ILLINOIS.

Patented Nov. 5, 1912.

Application tiled September 13, 1911. Serial No. 649,116.

'1b all whom t may concern.'

Be it known that I, CHESTER NASH, a citizen of the United States, residing at regOn,y

in the county of @gle and State of Illinois, ,ave'invented certain new and useful 11n- .'irovements in fencil-Sharpeners, `of which `the followingy is specification.`

My invention relates to improvements in pencil Sharpeners and has `for itslobject the production of a device of this character through the medium `of which a pencil may be sharpened witbifease and expedition.

A further object is the production of, a pencil Sharpener which will be of durable ind economical construction and efficient. in fiperation.

tlther objects willA appear hereii'iafter.-

lilith these objects in view, my invention consists in the combinations and arrangements of parts hereinafter described and claimed. i

My invention will be best understood by reference to the accompanying drawings forming a part of this sj'iecification and in which.

Vliigure 1 is a side elevation of a pencil sharpener enibodying my invention, F ig. 2 is a top plan View thereof, Fig. 3 is a front elevation of the pencil Sharpener, Fig. 4 is a vertical section taken on substantially line ze-a' of Fig. 3, and Fig. 5 is a fragmentary detail section taken on substantially line jf/--2/ of F ig. 4.

The preferred forinof'construction as illustrated in the drawings `comprises a frame 1 preferably formed of metal. Arrangeifl in the bottom of the men'iber l is a. sliding receptacle or drawer 2 for the reception of the shavings and. dust removed from the pencil when the. device is in operation'. Arranged upon the front side of the vertically disposed back wall of the frame 1 a Yertically disposed block 3, secured in position by means of lthumb screw 4, the latter engaging an elongated slot 4 pro'- vided in the frame 1 soas to permit of ver'- tical adjustment of the member 3. A screw stud projecting rearwardly from the member into cngagen'lent with an elongated slot o in. the frame 1 serves as a means of maintaining the lower end of the inember 3 in j'zroocr position, preventing transverse movement thereof. Y

`r'the member 3 is wedge shape in cross section, as clearly shown in Fig. `3. Arranged upon the opposite downwardly con- -the outer-extremities thereof vergeht sides of said member 3 are circular' cutters 6 carried at the outer ends of the arms 7 which are fulcrumed upon the respective ends of the transversely extending screw bolt 8 secured in block 3. vFormed integral with the arms 7 at the fulcrum points thereof are operating levers 9 which project upwardly and forwardly as shown, being opera tively connected by means of the knob `or handle piece 10. The arrangement is such, as will be observed, that oscillatory Inovement of the levers 9 will impart sliding orbital movement to the cutters 6 upon thev opposite inclined surfaces of the member 3. They cutters 6 are yieldingly held against said surfaces of themember 3 through the lmedium of compression springs 11 which areinterposed between the outer sides of the arms 7 and the head of the bolt 8 'in one instance and the thumb screw 12 threaded upon said bolt in the other instance; the

arrangement being such as will be observed that adjustment of the nut 12 upon said bolt effecting adjustment of the t nsion of said springs. The lower ends of t e arms 7 rest against the opposite sides of the member 3 so that. the springs 11 engaging'against the medial portions of said arms serve to force the cutters 6 against the opposite sides of said member, adjustment of the tension of said springs as above mentioned. effecting the adjustment of the force exerted by said springs upon said cutters.

vFormed in the member 3 adjapent the outer end thereof is a vertically extending opening 13 adapted to receive-a pencil. The lower end portion of the opening 13 1s preferably elongated transversely as shown inFig. 5 so that upon-insertion of apencll therein a leaf spring l5 which is adapted to engage against the back side of the pencil will force the latter 'toward'the forward portion 14 of said opening, Wdging" the same between the opposite acutely converginglsides of said portion 14 of said opening to maintain the pencil securely in position during the whittling or sharpening 0peration, as will be hereinafter described. 'The upper enel portion lofthe member 3 is preferably recessed or cut away as clearly shown fin Fig. 4 for the reception of the spring 15r and also in order to reduce th .weight of the device to a minimum. Rotatably mounted in the cyiii'idrically formed upper end portion of the opening 13 is a sleeve 16 adapted to serve in the capacity of a pencil holder or support, the lower /endfof said sleeve being split longitudinally and contracted so" thatv upon insertion of a pencil thereinto the fingers formed `at said end of said sleeve will securely grasp the pencil and thereby lock the same to'said sleeve, and sothat when said sleeve is rotated the pencil arranged therein willV be rotatedaccordingly. .Formed vupon the sleeve 16 adjacent the upper end thereofv is a series of ratchet teeth 17. A plate 18 secured upon thevfront side of the .j member 3 projectsv upwardly above the upper end thereof 'and has its upper end bfurcated, the ends or branches 19 at said vend engaging over the projecting teeth 17 to serve asa means of locking the sleeve 16 in position,

- vt-hereof but permitting of rotary movement.

Fulcrumed at 2() upon the plate 18 is an l -arm21 formed atits upper end with a pawl 22 adapted to engage they rachet teet-h 17 for imparting rotarymovement to the sleeve 16.

scillatory movement of the arm 21 is. limitedby the screw 23 which engages an elonl gated arcuate slot 24 provided in said arm,

theconnections ofthe arm 18 with the screw l 23 andat the fulcrum point thereof being loose, as :show-n in Fig. l, so as to permit of slight forward tiltingthereof so as to allow .the `pawl 22 being drawn rearwardly over.

` the rachet teeth 17. The opposite edges of the arml 21. are provided with rojecting inclined edge portions 25 and 26, t 1e former being positioned for engagement by one of the levers 9l during. upward movement I thereof andthe other of said edge ort-ions for engagement with the other of said levers during the.'downwardly movementy thereof. flhe''arrangement is such as will be observed will-.effect rocking of the arm 21 toward the leftor ina direction such that thepawl 22 45- 'v the-sleeve 16. Engagement of thev surface' 26 thereofwill yengage the teeth 17 and rotate during downward movement of the' levers 9 vfrom their upper terminals of movement efectsrockingof the arm 21 to initial position 'and ,consequently'A the drawing of the v Ap'awl!22jb'ack over the teeth 17 for a fresh .-grip-thereof.y The 'portion of the levers 9 .engaging with the surfaces 25 and 26 are so .f disposed 'as-'Will bejobserved that engage- .ment-'thereofwith the arm 21 during the pgp'ward movement will. tend to force said armagainstthe plate 18 and hence the pawl ^22 toward operative position against the j #teeth lfgengagement of said portion of said .levers-with the arm 21 during downward movement tending 'to forcel said arme out- War'dly 'and' hence to 'effect disengagement of-.ther pawl22 ywith the ratchetteeth. .With

the construction set forth then., it will be.

observed thatjoscillatory movement of the preventing vertical movement levers 9 in addition to imparting a slidable orbital movement to the cutters 6 will automatically` eect intermittent rotary movement of the pencil supporting mechanism 4and hence of the pencil arranged therein.

.Arranged directly below the lower terminal of the opening 13 is a transversely extending'bar 27 the ends of which are slidably mounted in the opposite sides of the frame 1. .Thebar 27 serves as a stop for the 'the bar 27. Wherf thus posltioned the opposite sides of the ,lower end portion of the pencil will project beyond the opposite convergent surfaces of the member 3 and s0 'that upon oscillation of the levers 9 the cutters 6 will engage said projecting sides of the pencil, whittling the same iiush with the surfaces upon which said cutters are mounted. Upon oscillation of the levers 9 the pencil arranged in the device will be intermittently rotated as above mentioned so as to present new portions of the same fen-Whittling by the blades or cutters 6 in their downward movement. By the provision of the two cutters 6 it is apparent that the 'cutting or sharpening of the pencil will be effected with great expedition, it being clear that with this provision it is only required to reciprocate the levers 9` until the pencil has been turned through a half revolution or one hundred eighty degrees, it being understood that were but one cutter employed it would be necessary to move the pencil to a complete revolution or three hunderd sixty degrees to complete the sharpening thereof. Provide-d upon the bar 27'is a post 28 adapted to be moved to register axially with the opening 13, as shown in dotted lines in Fig. 3. The post 28 is provided for use in the initiall sharpening of a pencil. With this provision, upon the insertion of a pencil into the device the post 28 will serve to position the lower end of the pencil higher in the block 3 so that the cutters upon oscillation of the levers 9 will not at first remove cuts of dull the latter. Provided in the cutters 6v i the upper extremity of said post into con-4 pencil; this equalizing 'rcounter action evi# dently lessening the possibility of breakage of the lead during the sharpening operation. The orbital sliding movement imparted to the cutters by oscillation of the levers. 9

is of great advantage since when so moved sliding or oblique nature, preventing'ripfping or splittingof the wood such as frequently occurs where the cut is longitudinal or transverse. Through vertical adjustulation of the sharpnessl of the point to which the lead of the pencil will be-fyyhifttled in the operation of the device; it' being'clear ing the bluntness of the point to vwhich the lead will be sharpened. The bar 27 r'is formed of a soft metal such as brass so that contact of the cutters `6, which are formed of a harder metal such as tool steel, will not are pertorations 29 providing means for ro. tating the same to present a fresh portion when one portion of the periphery hasbeen dulled through usage, said perforations bemg for effecting this adjustment.

While I have illustrated and described the preferred construction for carrying my invention into eiect, the sameis capable of variation or modification withoutdeparting from the spirit 'of the invention. I there-A fore do not wish to be Ylimited to the exact Adetails of construction set forth, but desire to avail myself of such variations' and'jmodia ications as come within the Scope of the appended claims,

Having described my invention what I claim as new and desire Patent is:

1. In a pencil'sharpener, the combination of a wedge shaped block having a' pencil opening extending therethrough and 1ntersecting the wedge surfaces; a pivoted lever mounted at each side ot' said block; a cut-ter carried by each of said levers andv slidin upon the corresponding wedge surface yo said block; a pencil holder rotatably mountl.ed in said pencil opening; ratchet teeth on said holder; anv oscillatory arm pivoted bethe cut thereof linto the pencil will be 6f al nient of the block 3 as permitted by ,the-l screw 4l, provision is made for effecting reg-'v end of that when said block is at its uppermost of' the' pencil vwill be.

:against vone side of said opening;

adapted to 'be engaged by a pointed tool.

to secure byLettersl tween said levers and provided with inclined surfaces adapted to be engaged by said'levers to cause oscillations of said arm; a-pawl on said arm adapted to engage said ratchet teeth; and a stop for the end of said pencil, substantially as described.

v2. Ina pencil Sharpener, the combination of a wedge-shaped block' having a pencil opening extending 'therethrough and intersectingethe wedge surfaces; a pivoted lever mounted at each side of .said block; yieldsaid block; a cuttercarried by each of said levers ,and sliding upon" the' corresponding lwedge surface of said block; a pencil holder lrotatably mounted in said pencil opening; ratchet teeth on said holder; an oscillatory arm pivoted between said levers and pro-- .vided with inclined surfaces `adapted to be engaged by said leve-ris to vcause oscillations .of said-arm; a pawl on said arm adapted toengage said ratchet teeth; and a stop for the said pencil, substantially as described.

gated ,pencil opening extending .therethroughl and intersecting the., wedge surfaces; yieldable means for pressing 'a pencil a pivoted lever mounted at each side of said' block; a cutter carried by each of s'aid levers and sliding upon the corresponding wedge surface of saidblock; a pencil holder rotatably mounted in said pencil opening; ratchet 3.' In a pencil fshrpener, the combination .of af'wedge-shaped `Arblock having an elonfable means'for pressing said levers vtoward l,

teeth on said holder; an oscillatory arm pivoted between said levers and provided with said levers to cause oscillations of said arm; a pawl on said arm adapted to engage said ratchet teeth; and a sto for the end ofsaid pencil, substantially as described. v 1` of a 'wedge-shaped block -having an elongated 'pencil opening extending therethrough and intersecting the wedge sur` I faces; yieldable means for pressing a pencil against one side of said opening; a pivoted lever mounted at each side of said block; yieldable means for pressing said levers toward said block; a cutter ,carried by `each of said levers and sliding upon the corresponding wedge'surface o opening; ratchet teeth on said' holder; an oscillatory arm ed to be engaged by said levers to cause oscillations.y of said arm; a pawl on said arm adaptedto engage said ratchet teeth; anda stop for the end of said pencil, substantially as described. '5. In a pencil shar ener, theK combination of a wedge-shaped lock yhaving a encil opening extending therethrough and Iintrinclinedsurfaces adapted to be engaged byivoted between saidl loversl and provided with inclined surfaces Vadapt- 4.l Ina pencil Sharpener, the combination said' block; a pencil holder rotatably mounted in said pencilv se'cting the Wedge surfaces; a' -pivoted lever mounted at each side of saidblock;V alcutt'er' carried by.each 'of said levers 'and'sliding uponthe corresp'ondingwedge surface of -said bloclrgwa pencil holder rotatably mountedin said pencil opening; ratchetf-teetlion i' said holder; .an 'oscillatoryarm pivoted between said levers and 'provided with i`n '.clined surfaces-adapted to be engagedby l'said levers to eauseoscillations of said arm;

a paWl onsaid arm adapted to engage said ratchetl teeth; a slidable ranged adjacent said b loclrgand a post on saidstop adapted'tofbe placed in alinement with said. opening; substantially as described.

- 6. In a pencil Sharpener; the combination A .o a Wedge-shaped block having a pencil kWedge surface of Aopening extending therethrough and intersecting the Wedge surfaces; a pivoted lever mountedat each side ofsaid block; yieldable means for 'pressing saidleverstoward p engaged-by said .levers to cause oscillations of saidarni; a paw] on said arm adapted to 'engage said ratchet teeth.; a slidable pencil v stop varranged adjacent said block; and a pencil stop ar- `'posten said stop adapted to be pi ceu 1n `alinement with said opening, substantially las described. l'

7. In a penci/l sharpener,the combination With a rotatable pencil holder, of two piv- `oted levers arranged at opposite sides thereof; ratchet teeth on said holder; an oscillatory arm pivoted between said levers and therein for the reception of the pencil, said A opening being transversely elongated; resilientI means adapted to'engage the pencil inserted into said opening to force the. saine againstone side of said opening; a Inovably mounted cutting element; and'means for op erating said cutting element,

In testimony whereof I have signed nl v name to this specication in the presence of f" two subscribing Witnesses.

CHESTER NASH.

Copies of thisV patent may be obtained for five cents each, by addressing the Commissioner of "latents,

` Washington, D. C.