US459180A

US459180A - mills

Info

Publication number: US459180A
Authority: US
Publication date: 1891-09-08
Anticipated expiration: 1908-09-08

Description

(-No'Medel.) 2Sheets-Sheet1.

J. D. MIL-LS 85 G. U. MQDERMOTT.

PENCIL SHARPENER. N0. 459,180. Patented Sept. 8, 1891-.

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(No Model.) 2 Sheets-She'et 2. J. D. MILLS & G. U. MQDERMOTT.

PENCIL SHARPENER.

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JOHN DIX MILLS AND GEORGE O. MCDERMOTT, OF CINCINNATI, OHIO; SAID MILLS ASSIGNOR TO SAID MODERMOTT.

PENClL-SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 459,180, dated September 8, 1891.

Application filed May 25, 1891. Serial No. 394,027. (No model.)

To all whom it may concern: the pivoted frame E, and on the other side Be it known that we, JOHN DIX MILLS and of the center is the pivoted chuck-frame F, GEORGE C. MCDERMOTT, both. of Cincinnati, having the journals for the chuck centrally in the county of Hamilton and State of Ohio, above the abrading-wheel and in line with have invented certain new and useful Imthe pencil-opening. The chuck or pencil- .provements in Pencil-Sharpeners; and we do holder in the present instance consists of a hereby declare the following to beafull, clear, tubular body portion G, having a groove or and exact description of the same, reference belt-wheel g formed thereon, in which the being had to the accompanying drawings, elastic belt g works. IO forming a part of this specification, and to the Vithin the cylindrical openingof the chuck letters of reference marked thereon. is arranged a series of spring retaining-lin This invention has forits objectto improve gers II, each formed of thin metal and havthe pencil-sharpener set forth in the Patent ing the ends 7L turned back upon themselves No. 4528,72 3, dated March 24, 1S91,particularly or inward to form a conical recess for the en- 15 with respect to themechanism for holding the try of the pencil and further to form holdingpencil while being sharpened. points to prevent the independent rotation The invention consists in certain novel deof the pencil and chuck. These fingers are tails of construction and combinations and preferably struck up and held in place by a arrangements of parts to be now described, ring 7L inserted at theinner end of the chuck 20 and pointed out particularly in the appended and driven tightly, no soldering or other fastclaims. ening then being necessary.

Referring to the accompanying drawings, WVhen the sharpener is made to operate Figure l is a front elevation of a sharpener upon one size of pencil, no difficulty will be made in accordance with our invention. Fig. experienced in adj usting the spring-arms to 25 2 is a section through the sharpener. Fig. 3 hold the same tightly; but when pencils of is a section at right angles to Fig. 2, showing different sizes are to be sharpened or where only the pencil-holder and adjacent parts. it is desired to grasp the pencil with a firm Fig. 4 is a top plan with part of the casing grip provision is made for closing the springbroken away. Fig. 5 shows a modified form arms more or less, as follows: The outer end 30 of holder. Fig. 6 is a holder without an adof the chuck is threaded internally, and screwjusting-screw. ing into the same is a' tubular movable clutch 8c Similar letters of reference in the several member I, the end of which passes outside of figures indicate the same parts. the spring-arms, and as it passes in forces the The casing A of the machine is similar in arms together and grips the pencil tightly or 35 appearance to that in the said formerpatent; reduces the size of the aperture between the but to permit of ready access to the internal arms and through which the pencils pass.

parts the back is divided and the lower por- Hence the device may be adjusted for large tion a secured permanently to the casing, or small pencils. \Ve prefer to form inclines While the upper portion is held by a lip a, on the spring-arms, as at i, and where the 40 fitting inside of the lower part, and a setmovable clutch member is employed the illscrew a at the top, as shown in Fig. 2. Inwardly-turned ends of the spring-arms may 0 side of the casing the general arrangement of be omitted, as in Fig. 5. The outer end of theparts is substantially the same as in said the movable clutch member projects through patent, the frusto-conical abrading-Wheel B the pencil-opening in the casing and is pro- 45 being journaled at the center with the gearvided with a milled head I to facilitate its ing 0, having the crank D thereon below the adjustment, and the body of the chuck '1' is same. Above and at one side of the center prevented from turning while setting up the of the abrading-Wheel is the drive-wheel E movable member by the pin K, journaled in for the pencil-holder or chuck, journaled in the casing and adapted to co-operate with the openings or recesses k in the body of the chuck, as will be readily understood, the pin being at once returned to normal position by the spring 70 when pressure upon it is relieved.

In front of the chuck we provide in the present instance a pressing-finger ill. adapted to rest upon the point of the pencil being formed to hold the same in place and prevent breakage, as well as-to impart thereto a smooth finish. In the preferred form the finger is simply a fiat spring secured to the casing at m and having a concavity N at the end for the pointof the pencil. On the side next the chuck a small incline O is formed to facilitate the entry of the pencil. IVhen operating the device, the pencil is inserted from the outside, and if it is desired to grasp the same firmly the pin K is pressed 1n to hold the body of the chuck while the movable member is set up, when the handle may be turned and the pencil sharpened in the usual manner.

Having thus described ourinvention, what we claim as new is- 1. In a pencil-sharpener, the combination,

.with the abrading-wheel and the chuck or pencil-holder, of the rigidly-supported spring pressure-finger co-operating with the point being formed on the pencil, substantially as described.

2. In a pencil-sharpener, the combination, with the abrading-wheel and the chuck or pencil-holder, of the pressure-finger having the concavity therein for the point being formed, and the incline nextthe chuck to facilitate the entrance of the pencil, substantially as described.

3. In a pencil-sharpener, the combination, with the abrading-wheel'and the chuckor pencil-holder, of the spring-finger secured to the casing and having the concavity for cooperating with the point being formed on the pencil in front of the chuck, and the incline adjacent the chuck, substantially asdescribed.

4.. In a pencil-sharpener, the combination of the pencil-holder or chuck having the spring retaining-fingers with inwardlyturned ends forming a conical opening for the entry of the pencil, substantially as described.

5. In an abrading-wheel pencil-sharpener, the combination, with the pencil-holder or chuck having the spring retaining-fingers rigidly held within the same and projecting away from said wheel, of the movable tubular chuck member screwed into the chuck-body and co-operating with said fingers to compress the same, substantially as described.

6. In a pencil-sharpener, the combination, with the pencil-holder or chuck having the spring retaining-fingers, and the movable tubular chuck member screwed into the chuck to compress the fingers, of the pin co-operating with recesses or depressions on the chuck to prevent its rotation While the movable member is being set up, substantially as described.

7. In a pencil-sharpener, the combination, with the chuck, of the spring retaining-fingers within the same, and the ring driven inside of said fingers to hold them in place, substantially as described.

8. In a pencil-sharpener, the combination, with the casing, the abrading-wheel journaled therein, and the crank-handle, of the chuck journaled within the casing, the drive-wheel co-operating with said chuck also journaled within the casing, and the movable chuck member projecting through the casing and having the head thereon, substantially as described.

9. In a pencil-sharpener, the combination, with the casing, the abrading-wheel j ournaled therein, and the crank-handle, of the chuck