US1228672A

US1228672A - Combined pencil and pencil-sharpener.

Info

Publication number: US1228672A
Application number: US9806416A
Authority: US
Inventors: Edward W Hill
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-05-17
Filing date: 1916-05-17
Publication date: 1917-06-05
Anticipated expiration: 1934-06-05

Description

E. W. HILL.

COMBINED PENCIL AND PENCIL SHARPENER.

APPLICATION FILED MAY 1], I9I6.

Patented June 5, 1917.

V l ///////l "0/11/41 )6 WM V anueproz 2? ffdll/zzzc/ M [[1 ll EDWARD HILL, OF CHICAGO, ILLINOIS.

COMBINED PENCIL AND PENGIL-SHARPENER.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed May 17, 1916. Serial No. 95,064.

1 0 all whom it may concern:

Be it known that I, EDWARD W. HILL, a citizen of the United States of America, residing at Chicago, Illinois, have invented a new and useful Combined Pencil and Pencil- Sharpener, of which the following is a specifioation.

My present invention has reference to pencils and general objects of the invention are to combine with a pencil a simple and practical lead pointing device which when not in use will be ordinarily carried by and form a part of the pencil and which can be conveniently operated at any time to sharpen the lead.

In accomplishment of these objects I employ a sharpening device which is constructed to fit over and receive the point end of the pencil and provide the pencil with supporting means for normally supporting anal confining the sharpener to the pencil en A special feature of the invention is the provision of the sharpener with a lead guide at the inner end of the socket therein which receives the point end of the pencil for supporting and bracing the protruding end of the lead as the lead is being pointed.

Another feature of the invention is a pencil sharpening blade whichis mounted at the inner end of the socket in the blade v, holder and is provided with a V.-sh aped notch in line with the socket and having a sharpening edge arranged to sharpen the lead by the rotation of the blade holder in either or both directions.

Various other features and details of construction will appear as the specification proceeds.

In the accompanying drawing I have illustrated the invention embodied in a pracat the end of the pencil and applied to the point end of the pencil in the act of sharpening the lead, the lead holder being in this view shown in section.

Fig. 3 is a vertical sectional view taken substantially on the line 3-3 of Fig. 1.-

Fig. 4 is a detached perspective view of the blade.

Figs. 5, 6, 7 and S are enlarged sectional views of different forms of blades taken substantially on the plane of the line 5-5 of Fig. 4.

In the present disclosure I have shown my invention as applied to a magazine or clutch pencil of more or less conventional structure embodying a body portion 7 terminating in a casing or tip 8 inclosing and protecting the end portion of the lead 9, said tip portion of the pencil having a clutch therein for gripping or holding the lead.

The opposite end of the pencil is provided with a support for the sharpener and this support takes the form, in the present disclosure, of a screw threaded stud or projection 10, which is shown secured to the end of the pencil body and having a stem 11 projecting in the end of the penc l body and an outstanding flange 12 engagingthe end of the pencil body.

The sharpening device consists, in the illustration, of a holder 13 supportlng a sharpening blade 14, said holder belng provided with a socket 15 in one end thereof to loosely receive the lead inclosing casing of the pencil and the blade being shown formed with the V-shaped notch 16 therein in line with the socket and having its edges sharpened to afford the cutting edges. In the specific construction shown the support for the sharpener is a screw threaded stud and the inner walls of the socket 15 therefore are screw threaded as indicated to receive and fit the screw threads of the threaded supporting stud 10. This threaded supporting stud is of slightly larger diameter than the tip of the pencil so that the socket will have a loose fit thereover to prevent the screw threaded inner walls of the socket from scratching the tip or lead inclosing casing 8, the screw threads being preferably flattened as indicated at 17 so as to leave no sharp edges inside the socket.

At the inner end of the socket 15 is preferably provided a guide 18 for receiving and bracing the lead, this guide being shown as a separate bushing seated in the inner 40 e as indicated in Fig. 1 the sharpener is simbeveled seat 19 at the entrance thereto to receive the somewhat beveled or rounded end of the lead inclosing casing 8. To facilitate the insertion of the tip of the pencil'in the sharpener the mouthof the socket may edges of thev shaped notch in the blade are. beveled to provide the cutting edges 26 and be beveled as indicated at 20.-

The lead sharpening blade is shown se cured in its holder by seating it in a slot 21 formed in the outer end of the holder, a screw22 being provided for clamping the two thus-separated portions'of the holder together upon the blade therebetween, said screw passing through an opening 23 provided in the bladea Lateral displacement ofthe blade is prevented in the blade holder by providing positioning shoulders 24' at the inner end of the slots 21 engaging the beveled end portions 25 of the blade. i

Fig. 5 shows in detail how the opposite Q'Tand these edges are shown arranged so that when the cutter rotated right-handedly the cutting edge 27 will be effective and when rotated left-handedly the cutting edge 26 will be effective. This construction enables the sharpening of the leadby alternate relative rotation of the pencil and sharpener in opposite directions. The blade shown in Fig. 6 is also sharpened to cut in both directions while those shown in Figs. 7 and 8 are right handedandleft handed cutting blades. I I

Ordinarily it will be seen that the sharpener is carried by and actually forms apart of the pencil, it being usually made more or less ornamental in appearance so as to add to ratherthan detract from the appearance of the pencil. lVhen the-lead becomesdulled ply removed from its support on the end of the pencil, the point ofthe pencil is inserted in the socket of the sharpener and u on relative rotation being set up between 't 1e pencil and bladeholder the lead is quickly sharpened. With the cutting'edges arrangedas shown it ispossible; to sharpenthe pencil by alternate, rotative movements in opposite directions, making it convenient in the f sharpening operation to hold the pencil between the fingers of one hand and, the sharpener between the fingers of the, other hand and then twirl the two elements thus held in the fingers in opposite directions or twirl one while holding the other relatively stationary. Ducts or passages 28 are usually provided at the opposite sides of the cutting blade for carryingofi the lead shavings.

While my invention is applicable to pencils generally, it is of particular utility in connection with. pe'ncilsof the clutch type for the reason that with such 'pencil's'it is usually considered 'necessaryto' use a relatively hard lead to prevent the clutch from cutting into and breaking off the lead and it has always been amatter of some difliculty heretoforeto keep a sharp point ingat its opposite end, of a blade holder provided with a socket in the end thereof closely engaging the protruding stud on the end of the lead carrier to thereby secure said blade holder to the lead carrier and said socket being adapted when disengaged front larger diameter than said lead inclosing caslead carrier to thereby guideand rotatably support the point end of the lead carrier within said blade holder and a lead sharpening blade atthe inner end of the socket in the blade holder. a

2. A lead sharpener for clutch pencils comprising a blade holder having a substantially cylindrical longitudinally extensive socket in one end thereof provided with rela- 'tively rigid longitudinally extending walls adapted to embrace and house a pencil casing and thereby rotatably confine said pen c1l casing in said holder and provided with a lead receiving guide at the inner end of I said pencil-casing socket in axial alinement with the socket, said holder furtherhaving a longitudinal slot therein extending inward from the opposite end of the bladeholder to i said lead guide and a cutting blade seated in said slot and provided with a cutting edge in line with the lead guide, all whereby the pencil casing and lead are rotatably centered in the sharpener and relative angular move- 'ment of the pencil and sharpener is prevented 'byengagement of the pencil casing with the rigid longitudinal inner walls of the socket in the end of the blade holder in conjunction with the similar supporting of y the lead in the lead guide, and independ ently of any support afforded by the cutting blade. i

' 3. The combination with a lead carrier having a lead inclosing casing at the point end thereof and a screw threaded] stud of slightly larger diameter at its opposite end, of a blade holder having an internally screw threaded socket in one end thereof to receive and engage the screw threaded stud, the

screw threads on the inner walls of said socket having blunt edges to allow for free and unrestricted rotation of the point of the pencil within the socket and to prevent scratching of such point in the socket and a lead sharpening blade at the inner end of the socket in the holder.

4. The combination with a pencil having a lead inclosing casing at the point end thereof and a screw threaded stud of slightly larger diameter at the opposite end thereof, of a blade holder havin a screw threaded socket receiving and tting the screw threaded stud whereby said blade holder is normally confined to and carried by the pencil, said socket loosely receiving the lead inclosing casing at the point end of the pencil whereby the point of the pencil may be rotated in the blade holder, said blade holder having a guide at the inner end of the socket therein receiving and bracing that portion of the lead projecting beyond the lead inclosing casing and a lead sharpening blade mounted in the blade holder at the end of the lead guide aforesaid.

5.- In a device of the character set forth, a holder having a socket in one end thereof and a longitudinal slot in the opposite end extending longitudinally to said socket and separating the end portion of the holder into two parts, a cutter blade seated in said slot and having a cutting edge disposed within the socket and means for clamping the two separated end portions of the holder together upon the blade therebetween.

6. In a device of the character set forth, a holder having a socket in one end thereof and a longitudinal slot in the opposite end extending longitudinally to said socket and separating the end portion of the holder into two parts,a cutter blade seated in said slot and having a cutting edge disposed within the socket, shoulders at the inner end of the slot engaging the inner end of the cutter blade to centralize the same with respect to the socket and means for clamping the two separated end portions of the holder together upon the blade therebetween.

7 A lead sharpener for clutch pencils comprising a blade holder having a longitu- ,of a pencil inserted in said blade holder is rotatably centralized by the engagement of the, pencil casing in the longitudinal socketv and the protruding lead in the lead guide at the inner end of said socket and relative angular movement of the pencil and sharpener are prevented by engagement of the pencil casing with the rigid confining and supporting walls of the socket surrounding the pencil casing and the supporting of the lead in the lead guide, independently of any support afl'orded by a cutting blade, and a plurality of cutting blade edges in the blade holder, at the innermost end of the lead guide, disposed in line with said lead guide to thereby operate upon the lead protruding from the lead guide in the relative rotation of the pencil in the sharp ener.

EDWARD W. HILL.