US1635562A - Pencil sharpener - Google Patents

Description

July 12, 1927. 1,635,562

J. SLUNICKO ET AL PENCIL SHARPENER Filed Oct. 23, 1925 4 wsmz zzz g ATTORNEY.

Patented July 12, .1927.

UNITED STATES P TENT-Torsion. Y

JULIUS SLUNICKO AND JOHN'- A. NIXON, F OMAHA, NEBRASKA.

' PENCIL smnranan.

Application filed October 2a, 1925. Serial No. 64,382.

' The invention relates to pencil sharpening machines, and has 'for its object to provide a motor driven pencil sharpening machine comprising a casing having a motor therein, rotatable cutter rollers driven by the motor and av drawer below the rollers in the casing, into which the pencil shavings will drop and gather, thereby allowing a large collection of shavings before the dumping operation. A further object is to provide a pencil sharpening .machine. comprising a casing having amotor therein and provided with a driveshaft, a rotatable'di'sc carried by said c drive shaft and in; which are mounted angularlyshaped pintles of cutters which diverge and are-connected to a rotatable pencil. re-

.ceiving head having a spring contact in the' pencil receiving aperture thereof, which is forced to circuit closing position upon the insertion of the pencil, and actuate the diverging rollers -5with spiral cutting ribs which sharpen the pencil during the rotation of the pencil receiving head. Y Afurther object is to provide a contact 'ring aroundthe bearing of the pencil receiving head and with which a contact member carried. by the head engages slidably during the rotation of the head, thereby maintaining a contact until thepencil is removed from the head.

With the'above and other objects in view the invention resides in the combination'and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in theprecise embodiment of the invention may be made Within the scope of what is claimed without departing fromthe spirit of the invention. Y

In the drawing A Figure 1- is'a slde elevation of the machine with parts broken away and shown inverti cal longitudinal section to better show the structure.

Figure 2 is an; enlarged verticallongitu- 1 dinal section through a portion of the head;

' Referring to the drawing, the numeral 1 Qdesignates the casing of a machine and 2 a conventional'iorm of motor in one end thereof. Thelower side of the casing 1 is pro- -vided with brackets 3 whereby the device may be attached toa desk or other support.

In pencil shar'peners as at present constructed, it is necessary to clean the. shavingaq'ut qfxthe same many times, and to obviate difficulty a relatively large drawer 4 is disposed in the casing- 1 beneath the cutting" rolls '5, and into which drawera relatively large amount of "shavings may accumulate before it Is necessary to dump the same.

The motor 2 is provided with adrive shaft 6, which has pinned thereto by means of a pin 7 a reduced portion 8 of a rotatable disc 9. The motor shaft 6 is rotatably mounted in'a bearing 10-of a brace 11, and the .disc 9 is provided with a large cylindrical portion 12, which is rotatably mounted in a bearing 13 of the brace '14,:therefore it will be seen that the disc as well as the shaft is accurately guided during its rotation. Rollers 5 are provided with spiral cutting edges 15,

which duringthe rotation of the rollers by the. disc 9. sharpen the end of the pencil .16.. The rollers 5 areprovided with'rectangular 'shaped portions 17 disposed in similarly shaped apertures'18 of the disc, therefore it the diverging r'oll'er's '5 will rotate therewith and sharpisn the pencil 16.

Rotata y mounted in a bearing :19of the casing 1 is the reduced portion 20 of the-pencil receiving head, and which head is.pro-

.vided with an aperture 21, in which the pencil 16 is inserted. Theinner end of the head is provided with an arcuate plate 22, in which'are mounted the pintlesl23 oi the 'will be seen that when the disc 5) is rotated I rollers 5, thereforeit-willbe seen th t during the rotation of .the cutter rollers, the

pencilreceiving head will rotate therewith. Surroundingthereducedportion 20 of the pencil receiving head is a conductor plate 24, with which'a br'ush- 25 carried by the head "engages during "the rotation of the. head. Disposed'in the recess 26 in the reduced portion 21 of the head is aspring contact arm 27, which is engaged by the penoil for closing the circuit through the casingl, reduced portion 2010f the head, the spring contact arm 25, andconductor ring 24, and wire-28, to the motor and desired. When the pencil" 6 is' removed from the pencil receivinghead the spring 27 conductor, ember then the wire 29,. howe ver it isto be understood the wi may vary as that during'the rotation of thecutter head that a-constant contact will be maintained' atall times.

From the above it willb 9 a neaaeea motor driven pencil shar ening machine is provided which -is 'simpe in construction and one which is particularly adapted for use in large ofices where a great many penoils are sharpened in the course of a day. It will also be seen that the machine is automatically started when the pencil is inserted therein and automatically stopped when the sharpened pencil is removed therefrom, thereby conserving power.

W The invention having been set forth what. is claimed as new and useful is l. pencil sharpener comprising a cas ing, a mot-or disposed in said casing, a drive shaft carried by said motor, a disc detach ably connected to the drive shaft, diverging cutter rollers carried by said disc, an aper tured pencil receiving head rotatabiy mount ed in a bearing of the casing axially in rela tion to the motor shaft and to which the diverging rollers are connected, a conductor contact member within the pencil. receiving aperture of the head and positioned whereby when a encil is inserted in the head the circuit will be closed through said contact member and the conductor ring.

2. The combination with a pencil sharpening machine comprising a motor, diverging cutter rollers driven by said motor, a rotatable pencil receiving head having a pen cil recei ing aperture therein and rotatably mounted n a bearing of the casing, 01'' a conductor ring surrounding the head and carried by the casing and a spring contact arm disposed in the head and forming means whereby a circuit will be closed through the spring arm and ring when a pencil is inserted in the head and broken when the penoil is removed from the heao,

In testimony whereof we afiix our signatnres.

Jennie SLUNICKO. JOHN a. NIXON.

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