US2815002A - Erasing device having a projectable and retractable eraser - Google Patents

Erasing device having a projectable and retractable eraser Download PDF

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US2815002A
US2815002A US516943A US51694355A US2815002A US 2815002 A US2815002 A US 2815002A US 516943 A US516943 A US 516943A US 51694355 A US51694355 A US 51694355A US 2815002 A US2815002 A US 2815002A
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eraser
barrel
pencil
extended
button
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US516943A
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Mayes Clell Charley
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00Combinations of writing implements with other articles
    • B43K29/02Combinations of writing implements with other articles with rubbers

Definitions

  • This invention relates to mechanical pencils in which an elongated lead is fed to a writing tip or point, and in particular, an eraser incorporated in a mechanical pencil in which the eraser which is provided with a centrally disposed longitudinally positioned opening through which the lead extends and which is positioned at the base of the conical shaped section of the point of the pencil is slidably mounted and adapted to be actuated by a button on the surface of a barrel of the pencil wherein, should it be desired to make an erasure, the eraser is actuated by the button to slide outwardly beyond the point of the lead with the surrounding conical shaped portion of the pencil expanding whereby an erasure may be made and after completing the erasure the eraser is adapted to be retracted by the button and the point adapted to be used for writing.
  • the purpose of this invention is to provide an eraser for a mechanical pencil in which the eraser is adapted to be used without removing caps or other parts of the pencil and without turning the pencil end for end.
  • this invention contemplates an eraser slidably mounted in the writing end of a mechanical pencil and adapted to be actuated by a button whereby when it is desired to make an erasure the eraser is actuated to an extended position beyond the point of the lead so that it may readily be used.
  • Another object of the invention is to provide an eraser for a mechanical pencil in which the eraser is necessarily completely covered except for the short period of time that it is used.
  • Another important object of the invention is to provide an eraser for a mechanical pencil in which the eraser is adapted to be projected beyond the point of the pencil and in which the eraser is adapted to be incorporated in the body portion of the pencil without increasing the diameter thereof.
  • a further object of the invention is to provide an eraser for a mechanical pencil in which the eraser is adapted to be projected beyond the point of the pencil when use thereof is desired and wherein the eraser is readily retracted after use in which the pencil is of a comparatively simple and economical construction.
  • the invention embodies a mechanical pencil having a barrel with a conical shaped point in which the conical shaped point includes a plurality of expanding sections, a cylindrical eraser having a longitudinally disposed opening extended through the center thereof slidably mounted in the barrel, a button secured to mounting elements of the eraser and extended through a slot in the barrel for sliding the eraser outwardly through the point of the pencil, a conventional lead tube extended through the center of the eraser and mounted in the barrel and conventional operating means for the lead in said tube.
  • Figure 1 is a side elevational View of the improved mechanical pencil with the eraser slidably mounted therein with parts broken away showing a section on the longitudinal Center of the pencil illustrating the mounting and operating elements of the eraser.
  • Figure 2 is a longitudinal section similar to that shown in Figure 1 showing the eraser in the extended position for use with the parts shown on an enlarged scale and with the lead actuating instrumentalities broken away.
  • Figure 3 is an end elevational view of the pencil look ing toward the point thereof, the eraser being retracted to a nested position within the pencil.
  • Figure 4 is a view similar to that shown in Figure 3 showing the pencil with the eraser extended, as illustrated in Figure 2.
  • Figure 5 is a cross section through the pencil, taken on line 55 of Figure 1, also with the parts shown on an enlarged scale.
  • Figure 6 is a cross section through the pencil, taken on line 6-6 of Figure 2, illustrating the mounting of the eraser in the sliding tube or sleeve.
  • the improved mechanical pencil of this invention includes a barrel 10 having a threaded nipple 11 on the end on which the writing point is positioned, a plurality of fingers or segments 12, of flexible material extended from a band 13 threaded on the nipple 11, a sleeve 14 slidably mounted in the barrel 10 and having an internally threaded collar 15 with a beveled inner surface 16 on the outer end and a button 17 secured to the inner end with screws 18, an eraser 19 having a longitudinally disposed opening 20 therethrough threaded in the collar 15, a ferrule 21 slidably mounted on a conventional lead tube 22 of the pencil and in which the inner end of the eraser is mounted and suitable lead actuating mechanism, as indicated by the numeral 23, for actuating a lead 24 positioned in the tube 22.
  • the barrel 10 which is similar to a barrel of a conventional pencil, is provided with a partition 25 in which the tube 22 is mounted by a bushing 26 and a locking nut 27 and one side of the barrel is provided with a slot 28 through which the button 17 on the end of the sleeve 14 extends and with the outer surface of the button projecting beyond the surface of the pencil the button may readily be gripped by a thumb or forefinger of a hand whereby the button is adapted to be actuated from the position shown in Figure 1 to that shown in Figure 2 when it is desired to extend the eraser and by the same means the eraser is retracted by the button as. the button is returned from the position shown in Figure 2 to that shown in Figure 1.
  • the ferrule 21 is provided with an inner sleeve 29 that is slidably mounted on the tube 22 and outer threaded sleeve 30 that is positioned to coact with the threads on the inner surface of the collar 15.
  • the mechanical pencil of this invention will have the appearance of a conventional pencil, as illustrated in Figure l, and when it is desired to use the eraser incorporated therein, the button 17 is actuated to slide the sleeve 14 toward the point of the pencil wherein the eraser 19 spreads the fingers or segments 12 with beveled ends 31 of the fingers sliding over the collar 15 and resting against the inner beveled surface 16 thereof, as shown in Figure 2.
  • the outer end or erasing surface is positioned beyond the point of the lead of the pencil whereby the eraser is adapted to be used and after use the eraser is retracted by the button 17 moving the eraser, sleeve 14, and ferrule 21 inwardly to the position shown in Figure 1.
  • An erasing device comprising a barrel, a plurality of segments of flexible material positioned on one end of the barrel providing a conical shaped Writing end, a guide tube positioned in the barrel and extended through said segments, an eraser having a longitudinally disposed opening therethrough slidably mounted on the tube in the barrel, said tube extended through the opening of the eraser, and means for projecting the eraser through said segments and to a position extended beyond the end of the guide tube.
  • An erasing device comprising a barrel, a plurality of triangular shaped segments of flexible material positioned on one end of the barrel providing a conical shaped writing end, a guide tube positioned in the barrel and extended through said segments, an eraser having a longitudinally disposed opening therethrough positioned over the guide tube and slidably mounted in the barrel, and means for projecting the eraser through said segments positioned beyond the outer end of the guide tube, said projecting means being adapted to retract the eraser to a nested position Within said segments.
  • An erasing device comprising a barrel having a threaded nipple on one end, a collar having substantially triangular shaped converging segments of flexible material extended therefrom threaded on the nipple at the end of the barrel and providing a conical shaped section extended from the barrel, a guide tube extended through the barrel and extended through said segments, a sleeve slidably mounted in the barrel, said barrel having an elongated slot therein, a button mounted on said sleeve and extended through the slot of the barrel, an eraser having a longitudinally disposed opening therethrough carried by the sleeve and positioned with the opening over the guide tube, and a ferrule in the inner end of the eraser positioned over said guide tube and in which the inner end of the eraser is mounted,
  • an erasing device which comprises a barrel having a guide tube in one end and with a threaded nipple on the opposite end, said barrel having an elongated slot therein, a collar having a plurality of fingers of flexible material extended therefrom threaded on the nipple at the end of the barrel, said fingers converging to provide a conical shaped section at said one end of the barrel, the extended ends of the fingers forming the conical shaped section being positioned against the outer surface of said guide tube, a sleeve slidably mounted in the barrel and having a button extended through the slot therein, and an eraser having a longitudinally disposed opening therethrough through which the guide tube extends, said eraser being carried by the sleeve slidably mounted in the barrel and adapted to be actuated by the sleeve and button to expand the fingers and to a position extended beyond the end of the guide tube.
  • an erasing device which comprises a barrel having a guide tube in one end and with a threaded nipple on the opposite end, said barrel having an elongated s'lot therein, a collar having a plurality of fingers of flexible material extended therefrom threaded on the nipple at the end of the barrel, said fingers converging to provide a conical shaped section at said one end of the barrel, the extended ends of the fingers forming the conical shaped section being positioned against the outer surface of said guide tube, a sleeve slidably mounted in the barrel and having a button extended through the slot therein, an eraser having a longitudinally disposed opening therethrough through which the guide tube extends, said eraser being carried by the sleeve slidably mounted in the barrel and adapted to be actuated by the sleeve and button to expand the fingers and to a position extended beyond the end of the guide tube, a ferrule in which the inner end of the eraser is

Description

C. C. MAYES Dec. 3, 1957 ERASING DEVICE HAVING A PROJECTABLE AND RETRACTABLE ERASER Filed June 21, 1955 U wLN 2,815,002 Patented Dec. 3, 1957 ERASING DEVICE HAVING A PROJECT ABLE AND RETRACTABLE ERASER Clell Charley Mayes, Sevierville, Tenn. Application June 21, 1955, Serial No. 516,943
Claims. (Cl. 120-38) This invention relates to mechanical pencils in which an elongated lead is fed to a writing tip or point, and in particular, an eraser incorporated in a mechanical pencil in which the eraser which is provided with a centrally disposed longitudinally positioned opening through which the lead extends and which is positioned at the base of the conical shaped section of the point of the pencil is slidably mounted and adapted to be actuated by a button on the surface of a barrel of the pencil wherein, should it be desired to make an erasure, the eraser is actuated by the button to slide outwardly beyond the point of the lead with the surrounding conical shaped portion of the pencil expanding whereby an erasure may be made and after completing the erasure the eraser is adapted to be retracted by the button and the point adapted to be used for writing.
The purpose of this invention is to provide an eraser for a mechanical pencil in which the eraser is adapted to be used without removing caps or other parts of the pencil and without turning the pencil end for end.
Various types of erasers have been incorporated in mechanical pencils, however, such erasers are incorporated in the barrel of the pencil and usually covered with a cap or the like and upon removing the cap to make an erasure the cap is often dropped and frequently misplaced. Where such erasers are provided without a cap, the eraser is subjected to being soiled and the surface hardened by contact with the air so that such erasers are very seldom used. With this thought in mind, this invention contemplates an eraser slidably mounted in the writing end of a mechanical pencil and adapted to be actuated by a button whereby when it is desired to make an erasure the eraser is actuated to an extended position beyond the point of the lead so that it may readily be used.
Another object of the invention is to provide an eraser for a mechanical pencil in which the eraser is necessarily completely covered except for the short period of time that it is used.
Another important object of the invention is to provide an eraser for a mechanical pencil in which the eraser is adapted to be projected beyond the point of the pencil and in which the eraser is adapted to be incorporated in the body portion of the pencil without increasing the diameter thereof.
A further object of the invention is to provide an eraser for a mechanical pencil in which the eraser is adapted to be projected beyond the point of the pencil when use thereof is desired and wherein the eraser is readily retracted after use in which the pencil is of a comparatively simple and economical construction.
With these and other objects and advantages in view, the invention embodies a mechanical pencil having a barrel with a conical shaped point in which the conical shaped point includes a plurality of expanding sections, a cylindrical eraser having a longitudinally disposed opening extended through the center thereof slidably mounted in the barrel, a button secured to mounting elements of the eraser and extended through a slot in the barrel for sliding the eraser outwardly through the point of the pencil, a conventional lead tube extended through the center of the eraser and mounted in the barrel and conventional operating means for the lead in said tube.
Other features and advantages of the invention will appear from the following description, taken in connection with the drawing, wherein:
Figure 1 is a side elevational View of the improved mechanical pencil with the eraser slidably mounted therein with parts broken away showing a section on the longitudinal Center of the pencil illustrating the mounting and operating elements of the eraser.
Figure 2 is a longitudinal section similar to that shown in Figure 1 showing the eraser in the extended position for use with the parts shown on an enlarged scale and with the lead actuating instrumentalities broken away.
Figure 3 is an end elevational view of the pencil look ing toward the point thereof, the eraser being retracted to a nested position within the pencil.
Figure 4 is a view similar to that shown in Figure 3 showing the pencil with the eraser extended, as illustrated in Figure 2.
Figure 5 is a cross section through the pencil, taken on line 55 of Figure 1, also with the parts shown on an enlarged scale.
Figure 6 is a cross section through the pencil, taken on line 6-6 of Figure 2, illustrating the mounting of the eraser in the sliding tube or sleeve.
Referring now to the drawing, wherein like reference characters denote corresponding parts, the improved mechanical pencil of this invention includes a barrel 10 hav ing a threaded nipple 11 on the end on which the writing point is positioned, a plurality of fingers or segments 12, of flexible material extended from a band 13 threaded on the nipple 11, a sleeve 14 slidably mounted in the barrel 10 and having an internally threaded collar 15 with a beveled inner surface 16 on the outer end and a button 17 secured to the inner end with screws 18, an eraser 19 having a longitudinally disposed opening 20 therethrough threaded in the collar 15, a ferrule 21 slidably mounted on a conventional lead tube 22 of the pencil and in which the inner end of the eraser is mounted and suitable lead actuating mechanism, as indicated by the numeral 23, for actuating a lead 24 positioned in the tube 22.
The barrel 10, which is similar to a barrel of a conventional pencil, is provided with a partition 25 in which the tube 22 is mounted by a bushing 26 and a locking nut 27 and one side of the barrel is provided with a slot 28 through which the button 17 on the end of the sleeve 14 extends and with the outer surface of the button projecting beyond the surface of the pencil the button may readily be gripped by a thumb or forefinger of a hand whereby the button is adapted to be actuated from the position shown in Figure 1 to that shown in Figure 2 when it is desired to extend the eraser and by the same means the eraser is retracted by the button as. the button is returned from the position shown in Figure 2 to that shown in Figure 1.
As illustrated in Figure 2, the ferrule 21 is provided with an inner sleeve 29 that is slidably mounted on the tube 22 and outer threaded sleeve 30 that is positioned to coact with the threads on the inner surface of the collar 15.
With the parts designed and assembled as disclosed and described, the mechanical pencil of this invention will have the appearance of a conventional pencil, as illustrated in Figure l, and when it is desired to use the eraser incorporated therein, the button 17 is actuated to slide the sleeve 14 toward the point of the pencil wherein the eraser 19 spreads the fingers or segments 12 with beveled ends 31 of the fingers sliding over the collar 15 and resting against the inner beveled surface 16 thereof, as shown in Figure 2. With the eraser extended, the outer end or erasing surface is positioned beyond the point of the lead of the pencil whereby the eraser is adapted to be used and after use the eraser is retracted by the button 17 moving the eraser, sleeve 14, and ferrule 21 inwardly to the position shown in Figure 1.
It will be understood that modifications, within the scope of the appended claims, may be made in the design and arrangement of the parts without departing from the spirit of the invention.
What is claimed is:
1. An erasing device comprising a barrel, a plurality of segments of flexible material positioned on one end of the barrel providing a conical shaped Writing end, a guide tube positioned in the barrel and extended through said segments, an eraser having a longitudinally disposed opening therethrough slidably mounted on the tube in the barrel, said tube extended through the opening of the eraser, and means for projecting the eraser through said segments and to a position extended beyond the end of the guide tube.
2. An erasing device comprising a barrel, a plurality of triangular shaped segments of flexible material positioned on one end of the barrel providing a conical shaped writing end, a guide tube positioned in the barrel and extended through said segments, an eraser having a longitudinally disposed opening therethrough positioned over the guide tube and slidably mounted in the barrel, and means for projecting the eraser through said segments positioned beyond the outer end of the guide tube, said projecting means being adapted to retract the eraser to a nested position Within said segments.
3. An erasing device comprising a barrel having a threaded nipple on one end, a collar having substantially triangular shaped converging segments of flexible material extended therefrom threaded on the nipple at the end of the barrel and providing a conical shaped section extended from the barrel, a guide tube extended through the barrel and extended through said segments, a sleeve slidably mounted in the barrel, said barrel having an elongated slot therein, a button mounted on said sleeve and extended through the slot of the barrel, an eraser having a longitudinally disposed opening therethrough carried by the sleeve and positioned with the opening over the guide tube, and a ferrule in the inner end of the eraser positioned over said guide tube and in which the inner end of the eraser is mounted,
4. In an erasing device, the combination which comprises a barrel having a guide tube in one end and with a threaded nipple on the opposite end, said barrel having an elongated slot therein, a collar having a plurality of fingers of flexible material extended therefrom threaded on the nipple at the end of the barrel, said fingers converging to provide a conical shaped section at said one end of the barrel, the extended ends of the fingers forming the conical shaped section being positioned against the outer surface of said guide tube, a sleeve slidably mounted in the barrel and having a button extended through the slot therein, and an eraser having a longitudinally disposed opening therethrough through which the guide tube extends, said eraser being carried by the sleeve slidably mounted in the barrel and adapted to be actuated by the sleeve and button to expand the fingers and to a position extended beyond the end of the guide tube.
5. In an erasing device, the combination which comprises a barrel having a guide tube in one end and with a threaded nipple on the opposite end, said barrel having an elongated s'lot therein, a collar having a plurality of fingers of flexible material extended therefrom threaded on the nipple at the end of the barrel, said fingers converging to provide a conical shaped section at said one end of the barrel, the extended ends of the fingers forming the conical shaped section being positioned against the outer surface of said guide tube, a sleeve slidably mounted in the barrel and having a button extended through the slot therein, an eraser having a longitudinally disposed opening therethrough through which the guide tube extends, said eraser being carried by the sleeve slidably mounted in the barrel and adapted to be actuated by the sleeve and button to expand the fingers and to a position extended beyond the end of the guide tube, a ferrule in which the inner end of the eraser is mounted, said ferrule having a threaded outer surface and being threaded in the extended end of the sleeve providing mounting means for the eraser in said sleeve.
References Cited in the file of this patent UNITED STATES PATENTS 971,797 Smythe Oct. 4, 1910 1,580,183 Veillette Apr. 13, 1926 1,621,945 Mitchell Mar. 22, 1927 2,069,462 Rouse Feb. 2, 1937
US516943A 1955-06-21 1955-06-21 Erasing device having a projectable and retractable eraser Expired - Lifetime US2815002A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127130A (en) * 1991-08-22 1992-07-07 Benjamin Copito Writing end eraser for a double acting mechanical pencil or erasable ink ball point pen
US6547465B1 (en) 2002-01-22 2003-04-15 Shoot The Moon Products Ii, Llc Pencil with exposable eraser
FR2869834A1 (en) * 2004-05-04 2005-11-11 Bic Sa Soc MOBILE GUM WRITING INSTRUMENT
US6979142B1 (en) 2004-12-06 2005-12-27 Erik Vaclav Chmelar Retractable tip mechanical pencil assembly
US20140331448A1 (en) * 2011-12-09 2014-11-13 Mitsubishi Pencil Company, Limited Writing instrument with erasing member
US20220063322A1 (en) * 2020-08-27 2022-03-03 SOCIéTé BIC Writing instrument
US11766887B2 (en) 2020-08-27 2023-09-26 SOCIéTé BIC Writing instrument

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US971797A (en) * 1909-05-15 1910-10-04 Jonathan P Smythe Pencil protector and retainer.
US1580183A (en) * 1923-06-04 1926-04-13 Thomas A Jenckes Jr Erasive means for writing implements
US1621945A (en) * 1926-02-12 1927-03-22 Mitchell Julius Pencil
US2069462A (en) * 1936-04-06 1937-02-02 John H Rouse Projectable eraser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US971797A (en) * 1909-05-15 1910-10-04 Jonathan P Smythe Pencil protector and retainer.
US1580183A (en) * 1923-06-04 1926-04-13 Thomas A Jenckes Jr Erasive means for writing implements
US1621945A (en) * 1926-02-12 1927-03-22 Mitchell Julius Pencil
US2069462A (en) * 1936-04-06 1937-02-02 John H Rouse Projectable eraser

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127130A (en) * 1991-08-22 1992-07-07 Benjamin Copito Writing end eraser for a double acting mechanical pencil or erasable ink ball point pen
US6547465B1 (en) 2002-01-22 2003-04-15 Shoot The Moon Products Ii, Llc Pencil with exposable eraser
FR2869834A1 (en) * 2004-05-04 2005-11-11 Bic Sa Soc MOBILE GUM WRITING INSTRUMENT
WO2005120862A2 (en) * 2004-05-04 2005-12-22 Societe Bic Writing instrument with a moveable eraser
WO2005120862A3 (en) * 2004-05-04 2006-03-09 Bic Soc Writing instrument with a moveable eraser
US6979142B1 (en) 2004-12-06 2005-12-27 Erik Vaclav Chmelar Retractable tip mechanical pencil assembly
US20140331448A1 (en) * 2011-12-09 2014-11-13 Mitsubishi Pencil Company, Limited Writing instrument with erasing member
US9409438B2 (en) * 2011-12-09 2016-08-09 Mitsubishi Pencil Company, Limited Writing instrument with erasing member
US20220063322A1 (en) * 2020-08-27 2022-03-03 SOCIéTé BIC Writing instrument
US11766887B2 (en) 2020-08-27 2023-09-26 SOCIéTé BIC Writing instrument
US11766886B2 (en) * 2020-08-27 2023-09-26 SOCIéTé BIC Writing instrument

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