US658824A

US658824A - Pencil-sharpening device.

Info

Publication number: US658824A
Application number: US1079100A
Authority: US
Inventors: Charles Babcock
Original assignee: BOYD PARK
Current assignee: BOYD PARK
Priority date: 1900-03-30
Filing date: 1900-03-30
Publication date: 1900-10-02
Anticipated expiration: 1917-10-02

Description

No. 658,824. Patented Oct. 2, I900. C BABCOCK. PENCIL SHARPENING DEVICE.

(Application filed Mar. 30, 1900.| (No Model.) 2 Sheets-Sheet IWTNEEEEE No. 658,824. I Patented Oct. 2, I900.

C. BABCOCK.

PENCIL SHABPENING DEVICE.

(Application filed Mar. 80, 1900.1

'2 Sheets-Sheet 2.

(No Modal.)

INVENTUR /w/ m: NORRIS Pzrzns cd. wor mu'mo. wasnmomu, a. c,

follows:

CHARLES BABCOCK,

PATENT OFFICE.

OF SALT LAKE CITY, UTAH, ASSIGNOR 0F ONE-THIRD TO BOYD PARK, OF SAME PLACE.

PENClL-SHARPENING DEVICE.

SPECIFICATION forming part of Letters Patent No. 658,824, dated October 2, 1900.

Application file'd Marcl13b, 1900.

To all whom it may concern:-

Be it known that 1, CHARLES BABCOCK, of Salt Lake City, county of Salt Lake, and State of Utah, have invented new and useful .Improvements in Pencil-Sharpening Devices, of which the following is a specification.

My invention relates to pencil-'sharpeners; and my improvements upon thisclass of de-' vices have for their object the production of a construction whereby they are made more vation of the apparatus with the pencil-holder and its clutch in a position to have a pencil inserted therein. Fig. 2 is another side elevation of the device with a part of the wall by which the working parts are inclosed illustrated as brokenout. Fig. 3 is a top view of the mechanism. Fig. 4 is a vertical section taken on the line 00 w of Fig. 3, I

The several parts of the apparatus thus illustrated are designated by letter reference, and the function of the parts is described as The letter K designates the case in which the mechanism is inclosed and mounted, and

this case has a circular form, having its sides made to taper slightly inwardly as extendedupwardly. V v

The letter A designates a plate that is transversely arranged within and secured to the case-walls at 01. a 01, and is preferably constructed to have a triangular form.

The letter J designates a vertically arranged'bearing formed centrally in the plate A and in which the cutting mechanism is arranged to journal. This bearing J is extended downwardly from the bottom of the plate A in a connected tube-form extension 64 as shown at Figs. 2 and l.

The cutting mechanism consists of a disk D, having radially projected from its perimeter a series of cutting-blades B, and which disk is provided with a shaft S, that is down- Serial No. 10,791. (No model.)

in the under side of the disk D, adapted by I its form and location to receive the collar of.

Each of the cutting-blades B is at its inner end secured in the perimeter of the disk wheel D, with its cutting edge e projecting downwardly on an'angle which is acute to the top of the disk wheel D, with the outer ends a of the blades projected upwardly and their upper surface made slightly concave in cross-section, as indicated at e The letter 19 designates a pintle-sbaft which is arranged to depend from the under side of the plate A, and the letter T designates a tube arranged upon said pintle-shaft and free to turn thereon, said tube being retained in position on said pintleshaft by a pin 19, passingtransversely through the shaft 19 where the latter extends below the end of the tube T, on which pin so placed the lower end of the tube T rests.

The letter E designates an arm which is rigidly connected to said tube T and laterally projected therefrom. The letterl designates a pin that is projected upwardly from the outer end of said arm E, where the upper end of said pin will be in a position to actuate the tube T to be reciprocatinglyrotated on said pintle-shaft as said pin successively comes in contact with the blades of the cutting mechanism.

The letter P designates a pawl which at its inner end is connected to the tube T, and at its outer end the arm of this pawl is arranged to pass out of the case through a slot horizontally formed therein, as indicated at 1 As operated by the reciprocation in rotation of the tube T and the movement of the arm E, this pawl P is actuated to engage with the perimeter of the ratchet-wheel R on the outer end of the pencil-holderV, and thus actuate the latter to move one tooth each time one of the blades 13 comes in contact with, so as to move outwardly, the pin 1.

The letter I designates a spring which at its lower end is connected to the exterior of the tube-form bearing J, and from this connection it is helically coiled around said hearing, with its outer end attached to the pawl P at 2' against the force of which spring the said pawl is operated and returned to position after being actuated.

The pencil-holding. mechanism H consists of a tube-form inclosure 71 which is secured to and projected from the side of the case K, as indicated at Figs. 1 and 3.

The letter L designates a tube-form shaft which is arranged within the tube-form inclosnre 7L2 and constructed to be rotated therein by means of the ratchet-wheel R and the pawl P, operated as before described. This tube-form shaft L is retained in place within the inclosure 7L2, in which it journals, by means of a groove g, formed to exteriorly encircle said tube-form shaft L, and a springpin p, mounted exteriorly upon the tubeform hearing or inclosure h This springpin has a C form arranged to encircle exteriorly part of the tube-form bearing 7L2, with one of its ends attached to the latter and the other free end of the spring part provided with a pin p, adapted to pass through an opening in the tube-form bearing to enter the groove g, as shown at Fig. 4, thus permitting the free revolution of the tube-form shaft L, and by the engagement of the pin with the slot g to prevent its outward movement. This tube-form shaft L is slightly expanded at its inner end, as indicated at 01 The letter V designates the pencil-holder proper, and it consists of a tube which is open at both of its ends, and it is arranged within the tube-form shaft L. The outer end of this pencil-holder proper is provided with a series of slits that are extended from the end of the holder inwardly and thereat provided with a lip f. The outer end of this holder proper is also slit inwardly and is thereat slightly drawn inwardly.

The letter O designates a clutch which at c is pivoted to the side of the pencil-holder proper where extending outwardly beyond the end of the tube-form shaft L, and the letter 0 designates a cam formed on the inner end of the clutch.

The letter 7L designates the clutch-handle, and which when pulled outwardly engages with the outer face of the ratchet-wheel R and draws outwardly the holder proper,causing its inner slotted end to engage with the expanded inner end of the tubular shaft L, and thus cause the inwardly-forced end and slotted parts of the holder proper to rigidly grasp and hold an inserted pencil, aided by the grasping action of the slotted and inturned end parts at the outer end of the holder proper.

The letter N designates a slide-bar which is horizontally placed immediately beneath the vertical shaft S of the cutting mechanism and upon which bar the lower end of said shaft rests. This slide-bar N is adapted to be moved inwardly and outwardly in slots n and it, formed in the case sides, with the operating end of this bar N projecting beyond the case at K The letter 1' designates a spring arranged to encircle the bar N between the wall of the case and the shoulder r formed on the bar N, against the resiliency of which the bar N is moved inwardly.

The letter R designates a recess formed in the upper face of the bar N, said recess having the vertical end r and the inwardly and downwardly inclined end 0* and between these ends the horizontal part 7".

As thus constructed,a pencil being inserted within the holder proper, so that the end to be sharpened will be over that part of the plate A designated at a. in Fig. 3, the clutch is operated to grasp the pencil, as before described. This having been done, the crank is operated to actuate the cutting mechanism, and so soon as the cutting commences the bar N is moved inwardly slowly, while the shaft S is slowly passing down along the incline T The cutting continues to operate in a plane lower than at the start until the bottom end of the shaft S reaches the bottom of the recess R and so soon as the inward pressure upon the bar N ceases the spring 0' becomes active to move outwardly the bar N. While the cutting mechanism is being rotated, its blades successively in passing with each engage with the pin' 1 on the crank-arm E to rotate the tube T, and thus actuate the pawl P on the latter to operate the ratchet-wheel R to rotate the pencil-holder proper.

The blades B are located with reference to the operation of the pawl P and ratchetwheel B, so that the blades will only cut when the pencil is at one of its periods of rest and the blades'B will only engage with i the pin l, between the intervals that the blades are cutting.

By having the plates of the cutting mechanism slightly concave on their upper face and so positioned in the disk-perimeter that their outer ends will project upwardly on an incline, with their cutting edges extended downwardly from the plane of their rotation and being operated to out only when the pencil-holder and pencil are at rest, and then in the direction of the grain of the wood, the blades by their position and form, as thus described,will give to the pencil-point a conical form that is slightly concave. As thus constructed the cutting mechanism can be removed for sharpening the blades when necessary.

As the cutting mechanism herein shown and described would perform the same function in the same manner in connection with any pencil-holding mechanism which would operate. the pencil relatively in the same manner, hence I do not limit my invention of the cutting mechanism herein described to its combination with the pencil-holding mechanism which I illustrate and describe.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a pencil-sharpener the combination with the case K, having in its side the oppositely-formed slots of, and n; of the plate A, having the downcast bearing J; the disk D, provided with the blades B, radially arranged thereon, and the downwardly-projected shaft S; the bar N, arranged to be moved outwardly and inwardly in the slots in the case sides and provided wit-h the recess R constructed with the inclined side 7", and vertical end 0*; and the spring '1 constructed and arranged to be operated substantially as, and for the purposes set forth.

2. In a pencil-sharpener the combination with the case K, having the transversely-arranged plate A, provided with the depending bearing J; of the disk D, having the blades B, radially arranged on the perimeter thereof, each projected upwardly on an incline and having its cutting edge arranged to project downwardly, with its shaft S, arranged in the bearing J; the pintle-shaft b depending from the plate A; the tube T, arranged to turn on said pintle-shaft, and provided with the laterally-extended arm E, having the upwardly-projected pin l; the pawl P, laterally projected from said tube T; and the pencilholding mechanism H, provided with the ratchet-wheel R, constructed and arranged to be operated substantially as, and for the purposes set forth. a

3. In a pencil-sharpener the combination with a case of a pencil-holder provided with a pencil-grasping clutch, and arranged within a tube-form shaft provided witha ratchetwheel and constructed to journal in a tubeform bearing projected from said case; of a plate horizontally arranged in said case and provided with a depending bearing; and a depending pintle-shaft; a tube arranged to turn on the latter and having a laterally-extended arm provided with an upcast pin;

and a pawl laterally projected from said tube whereby to actuate said ratchet-wheel; and a disk provided with radially-arranged blades and having a shaft arranged to journal in said depending bearing; said blades when the disk is rotated being arranged to operate the connections actuating said pawl, substantially as and for the purposes set forth.

4. The combination with the case K, of the tube 7L2, projected through the latter; of the tube-form shaft L, having its inner end expanded; and the. pencil-holder proper V, arranged within the tube-form shaft, and having its ends slit inwardly and its-inner end expanded; and the clutch (Jihavingthe cam 0 and the handle h, and pivoted to said pencil-holder proper, at 0 whereby a pencil inserted within said pencil-holder proper is by the combined action of the before-named parts rigidly grasped, substantially as and for the purposes set forth.

5. In a pencil-sharpener the combination with a case, of a horizontally-arranged plate having a tube-form bearing depending therefrom; a wheel having cutting-blades radially projected from its perimeter, and provid ed with a shaft arranged .to vertically journal in said depending bearing; a horizontally-arranged bar provided with slideways in the case-walls on which bar the lower end of the shaft of said wheel is supported; and a recess formed in the upper surface of said bar and provided with an incline whereon the shaft and cutting mechanism may be 0perated to descend and thus cut in a lower plane substantially as and for the purposes set forth.

Signed at Salt Lake City, Utah, this 12th day of March, 1900, and in the presence of the two witnesses whose names are hereto written.

CHARLES BABCOOK.

Witnesses:

CHARLES H. BRINK, CHARLES 0. KEY.