US1256198A - Pencil-sharpener. - Google Patents

Description

G. W. BEYERLE.

PENCIL SHARPENER.

APPLICATION FILED AUG.25. 191s.

Patented Feb. 12, 1918;.

m mg; L n k 6 m m 6 Wifnesses GOT'ILOB WM. BEYERLE, OF SKIATOOK, OKLAHOMA.

PENCIL-SHARPENER.

To all whom it may concern:

Be it known that I, GOTT-LOB W. BEYERLE, a citizen of the United States, residing at Skiatook, in the county of Tulsa and State of Oklahoma, have invented certain new and useful Improvements in Pencil-Sharp.- eners, of which the following is a specification.

The invention has for a purpose to pro vide an eflicient form of electrically operated pencil sharpener, and also seeks to give a desirable construction adapted to be supported by an ordinary lamp socket as constructed-for attachment to the wall, so that the appliance does not require any special base, bracket, or other special fixture for its support. A further important object is to provide a device which will automatically operate as soon as the pencil is inserted for sharpening, and it is an aim of the invention to simplify theconstruction by which this automatic action is attained.

Another purpose is to give an eflicient form of sharpening device for shaping the pencil point.

Additional objects, advantages and feaengaging and turesof invention will appear from the conf struction, arrangement, and combination of parts hereinafter described andshown in the drawings, where-'- Figure 1 is an elevational view of the device in one embodiment,

Fig. 2 is a detail sectional? view of the V sharpener element,

adapted for mounting in the ordinary lamp socket or similar fixture, as illustrated at 10,

. the details of the wiring and contact bearings not being illustrated as these are ciently familiar in the art.

The appliance comprises a circular casing 11 in two parts, 12 and 13, respectively, the

latter being in the nature of a removable cover telescopin' slightly over the other section, and secure by screws 14.

The'part 12 is centrally apertured and has mounted thereon a suitable form of plug Specification of Letters Patent.

Patented Feb. 12, 1918.

Application filed August 25, 1916. Serial No. 116,828.

element 15, adapted to be screwed intov the socket 10. The plug element is intended to form a circuit with elements in the casing, one side of the circuit being carried through the externally threaded shell of the plug element, while the other side is carried through the central contact 16, carried upon a suitable insulating body 17 in the'plug element. Through the body 17 a suitable Wire 18 is carried, as shown. Within the plug 15, a suitable bearing 19 is provided, in which there is journaled the inner end of an armature shaft 20, upon which there is an armature winding 21 of any desired type, associated with field magnets 22, mounted upon the section 12 of the casing in a suitable relation to the armature, these being made in accordance with the practice in producing series Wound motors. The lead 18 is carried through the field magnets, which are connected in series, and from which a lead 23 is carried to a terminal contact 24, mounted in the outer section of the casing. In the present instance connection with the terminal on the casing section 13 is made by connecting the terminal wire 23 of the magnet at the end of the series in. the motor to a binding screw 24, carried in a block 25 of insulating material, attached to one magnet, the head of the bindingscrew being disposed to beengaged by a spring 26 suitably secured to-the terminal member 24 within the casing. Connected to the outer part of the terminal member 24 there is a spring switch arm 27, extending across the diametrical center of the cas1ng, and adapted to engage upon a contact 28, 1n the form of a suitable insulated bolt havinga brush element 29 mounted thereon, within the casing, and adapted to engage the commutator 30 of the armature. A suitable bearing 31 is provided centrally of the outer section 13 of the casing, in which the outer endof the shaft 20 is journaled, the shaft projecting therethrough and outwardly from the casing a. distance, and having slldably splined thereon a sleeve 32. The spring 27 1s centrally apertured to permit passage of,the"

shaft therethrough, and the' sleeve 32 is engaged on the shaft outwardly of the spring 27 so that when pressed inwardly the spring will close the circuit from the field to the armature, the circuit passing from the wlnding to the shaft 20, and thus to the threaded casing ofthe plug portion 15.

Carried by the sleeve 32 there is a hollow cone element 33, fixed rigidly thereon and having longitudinally extending slots in its sides. At intervals around the cone element 33 adjacent its outer edges, inwardly pressed lugs 34E are formed. Set removably in the cone 33, there is an abrasive cone 35, of stiff material, such as paper or fabric stiffened with glue or other suitable material, the inner surface of which is coated with a suitable abrasive for the purposes in View.

The abrasive cone is formed on its exterior with a series of raised portions 36, adapted to engage between the lugs 34: of the cone 33, whereby the abrasive cone is held securely so as to rotate with the cone 33. The cone 35 is formed with suitable slots 37 positioned so as to aline with the slots in the cone 33.

The outer end of the shaft 20 may be made rectangular in form, or circular, and the sleeve 32 is held thereon by means of a pin 38 engaged through a suitable slot in the sleeve, and fixed in the shaft.

In use, the device being assembled as described it may be mounted by simply screwing the plug element 15 into the ordinary lamp socket, properly mounted upon a wall or desk, and upon presenting the end of a pencil within the cone 35, the spring switch 27 will close the circuit through the motor causing it to operate, its rapid rotation driving the abrasive cone so as to quickly reduce the end of the pencil to the shape of the interior of the abrasive cone.

What is claimed:

Ina device of the character described, a hollow concentric cone rotatable upon its longitudinal axis having its larger end open for access of a pencil, said cone having dis charge openings through the sides thereof, and having lugs upon the inner surface located at such distance outwardly upon the cone, and the cone being of such size, that said lugs will clear a pencil inserted in the device, and a hollow cone of a resilient material having abrasive therein adapted to fit snugly in the first mentioned cone, and having portions extended beyond the area normally tending to engage an inserted pencil, said extended portions being adapted to lie between said lugs, whereby to hold the said cones against relative rotation, the last named cone having lateral openings at its intermediate part positioned to register with the said openings in the first mentioned cone, when the parts are engaged in operative relation[ In testimony whereof I have affixed my signature in presence of two witnesses.

GOTTLOB WM. BEYERLE.

Witnesses:

L. L. WILES, T. H. TAYLOR.

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