US1978147A

US1978147A - Pencil sharpener

Info

Publication number: US1978147A
Application number: US730133A
Authority: US
Inventors: George A Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-06-11
Filing date: 1934-06-11
Publication date: 1934-10-23
Anticipated expiration: 1951-10-23

Description

Oct. 23, 1934. G. A. SMITH PENCIL SHARPENER Filed June 11, 1934 3 sheets-sheet 1 Attorney Oct. '23, 1934. G. A. sMrrI-l PENCIL SHARPENER Filed June 11, 1934 5 Sheets-Sheet 2 I Attorney oct. 23, 1934.

G. A. SMITH 1,978,147

PENCIL SHARPENEB Filed June 11, 1954 fr i l 3 Sheets-Sheet 5 -44 l 455%/ F2Wfl/41a r 7 :r W i? I. l, U

Inventor Patented ct. 23, 1934 UNITED STATES PATENT oel-*ics 1,978.14?, n v' i George A. Smith, Mechanicville, N. Yr `Application June 11. 1934, serial No. 730,133

' 3 Claims.

` .f6 An important object of the invention is to provide a pencil sharpener of this nature which includes an outer and inner casing cooperatively Aassociated so that movement of the inner casing -will cause the closing of a circuit to energize an .1'0 electric motor for operating a rotary sharpening element.

A further important object of the invention re- ;sides in the provision of an electrically driven 'pencil Sharpener of this nature which -is compar- T15 atively simple in its construction, compact and convenient in its arrangement of parts, thoroughly eflicient and reliable in its use and operation, .and otherwise well adapted to the purpose for Awhich it is designed.

With the above and numerous other objects in the invention consists in certain novel features `of construction, and in the combination and arrangement of parts as will hereinafter be more fully described and claimed.

In the drawings:

Figure 1 is a front elevation of an electrically driven pencil Sharpener embodying the features of my invention.

Figure 2 is a vertical section taken therethrough substantially on the line 2 2 of Figure 1.

Figure 3 is a detail section taken substantially on the line 3 3 of Figure 2.

Figure 4 is a detail section taken substantially on the line 4 4 of Figure 2.

Figure 5 is a horizontal section taken substantially on the line 5 5 of Figure 2.

Figure 6 is a rear elevation of the inner casing showing the upper portion thereof and an in- 40 terior portion broken away to illustrate the gears.

Figure '7 is a detail sectional View taken substantially on the line 7 7 of Figure 5;.

Figure 8 is a detail section taken substantially on the line 8 8 of Figure 5, and

Figure 9 is a detail view showing in front elevation one of the upper corners of the outer casing. l

Referring to the drawings in detail it will be seen that the letter A denotes generally the .50 outer casing and the letter B denotes generally the inner casing. The outer casing A comprises a vertical rear wall 5, a bottom wall 6, a pair of side walls 7, and a top wall 8 which extends only a short distance along the upper edges of the side Y @5 5 Walls 'l and is formed with a sleeve 9 at the ends view as will appear as the description proceeds, l

of whichare slits 10 and a pin 11 extendsv through thesleeve across the slits. `The bottom 'wall 7 is provided adjacent its edge remote from the wall 5 with the slot 12.

The inner casing B comprises a rear `wall 14, a

bottom wall 15, a pair of vside Walls 16, a top wall 17, and a front wall 18 which extends down from the forward edge of the top wall 17 a relatively short distance terminating above the central portions of said side wall. ofthe inner casing there is slidably vmounted a drawer 19. A removable plate 20 is disposed below the lower edge of the front wall 18 and the upper edge of the front wall of the drawer 19 when the drawer is disposed inwardly. Suit- In the bottom able means 21 is provided for detachably holding this plate 20 in the casing.v A partition cornprises an upper horizontal portion 22 connected to a vertical intermediate portion. 28 adjacent to and spaced in parallelism from the wall 14 and depending from the rear of the portion 22 and merging into a horizontal portion 24 which is secured to the rear wall 14. In the portion 23 there is provided an oblong opening 25. A bracket comprises an upright portion 26 the lower end of which is offset as at 27 and secured to the rear wall 14. The upper end of the upright portion 26 is in the form of a bearing 28. An arm 29 projects from the upper portion of the upright portion 26 and merges in an upwardly disposed bearing portion 30 in alinement with the bearing 28. A shaft 31 is journalled through the

bearings

28 and 30. It will be noted that the arrn 28 and the shaft 31 extend through the openings 25. A pencil sharpening cone element 33 is iiXed on the front end of the shaft. On the rear end of the shaft there isv mounted a gear 34 meshing with the gear 35 connected with the armature shaft of an electric motor 36 mounted in the upper portion of the casing B. The rear wall of the inner casing B has a pair of apertured ears 38 which extend through the slits 10 and through the apertures of these ears extends the pin 11 thereby swingably mounting the inner casing in the outer casing.

On the rear wall 5 of the outer casing adjacent the lower end thereof is a spring 40 normally holding the casings in the position illustrated in the drawings that is with the wall 14 in parallelism with the wall 5. On the wall 5y there are two

contacts

41 and 42 insulated from the wall. The contact 42 has electric wires leading to a source of electrical energy and to the motor 23. The electric contact 41 is grounded.

A contact 44 is provided on the wall 14 and is D n L. o

insulated as at 45 from said Wall. The

contacts

41 and 42 are similarly insulated from the wall 5.

An opening 46 is provided in the plate 20. When a pencil is inserted through the opening 46 into engagement with the pencil sharpener element 23 and the casing B swung rearwardly the

contacts

41 and 44 engage thereby causing the electric energization of the electric motor 36 and the turning of the electric sharpening element.

It is thought that the construction, operation, utility and advantages of this invention will now be quite apparent to those skilled in this `art without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exempliiication` since in actual practice it attains the features of advantage enumerated as desirable in the statement yof the invention Aand the above description.

It will be apparent that changes in the details 'fof construction, and in the combination 'and 'arrangement of parts may be resortedv to without departing from the spirit or scope of the nventi'on'as hereinafter claimed or sacrificing anyjof vits advantages. 'Having thus 'described my invention, what I 'claim "as new is:

,1. A pencil Sharpener of the class described comprising an outer casing and an inner casing, 'means for'swingably mounting the inner casing vin the outer casing, electrically driven pencil sharpeningmeans in the inner casing, and a circuit closer comprising contact means on the inner casing fand contact means on the outer casing whichiriay be brought into engagement with each 'btherbylswinging the inner casing so as to close 'the`"circ`uit.

'2.` A pencil Sharpener of the classdescribed comprising an outer casing and aninner casing, means for swing'ably mounting the'inner casing in the kouter casing, electrically driven pencil sharpening means in the inner casing, and a A'circuit closer comprising contact means on the inner vcasing and contactA means on the outer casing which may be brought into engagement with each other by swinging the inner casing so as to close the circuit, said outer casing com prising a vertical rear wall, a bottom wall, a pair of side walls, and a top wall extending from the rear wall along a small portion of the upper edges of the side walls and terminating in a sleeve, said inner casing having a pair of apertured lugs extending through slits in the sleeve, and a pin extending through the sleeves and the apertures of the lugs thereby providing sadd means for swingably mounting the inner casing lin the outer casing.

3. A pencil Sharpener of the class described comprising an outer casing and an inner casing, means for swingably mounting the inner casing in the outer casing, electrically driven pencil sharpening means in the inner casing, and a circuit closer comprising contact means on the inner casing and contact means on the outer 'casing which may be brought into engagement with each other by swinging the inner casing so as to close the circuit, said outer casing comprising a vertical rear wall, a. bottom wall, a pair of side walls, and a top wall extending from the 'from the front edge of the top wall terminating above the central portions of the vside walls, a plate detachably mounted between the side walls below the front wall, and a drawer slidable under theplate'in the lower portion of the inner casing, said plate having an opening registering with the pencil sharpening means` GEORGE A. SMITH.