CA1256340A - Clip for pencil sharpener - Google Patents
Clip for pencil sharpenerInfo
- Publication number
- CA1256340A CA1256340A CA000578649A CA578649A CA1256340A CA 1256340 A CA1256340 A CA 1256340A CA 000578649 A CA000578649 A CA 000578649A CA 578649 A CA578649 A CA 578649A CA 1256340 A CA1256340 A CA 1256340A
- Authority
- CA
- Canada
- Prior art keywords
- leg portion
- housing
- clip
- generally
- mounting piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Tape Measures (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A pencil sharpener is disclosed which is provided with a clip means for securement of the sharpener to various objects and in particular to the housing of an existing measuring tape to provide an inexpensive replacement part for the clip used on the housing. In another embodiment, the sharpener is provided with a flat tab which can be clamped between an existing clip and the housing of the tape.
A pencil sharpener is disclosed which is provided with a clip means for securement of the sharpener to various objects and in particular to the housing of an existing measuring tape to provide an inexpensive replacement part for the clip used on the housing. In another embodiment, the sharpener is provided with a flat tab which can be clamped between an existing clip and the housing of the tape.
Description
~2~ Ei3~
The present invention relates to the art of psnoil sharpeners and in paxticular to pencil sharpeners for use by tradesmen such as carpenters or plumbers.
Carpenters or plumbers require a frequsnt æharpening of a pencil the lead of which has the tendency to break. It is important for practical use of a sharpener by a tradesman that the sharpener be provided at a place which is readily and conveniently accessible. To this end, reference may be had to Canadian Patent 7~5,934 issued January 18, 1966 to Maurice Laroche and describing a housing for a measuring tape which embodies at one corner thereof a pencil sharpener. While this arrangement may provide a convenient location of the pencil sharpener, it has a very substantial disadvantage in that it cannot be used with existing housings of measuring tapes some of which are quite expensive. It is likely that the expense of manufacture of the ~aroche pencil sharpener was the reason why it does not appear to have found a substantial acceptance in the trade.
It has also been proposed, for instance in Canadian Patent 729,838, issued March 15, 1966 to F. Chipman et al,, to provide a pencil sharpener within the handle of a hammer. As in the first mentioned case, such arrangement is relatively expensive and it also requires the weakening of the structure o~ the hammer handle itself, not to mention the potential damage to the sharpener which ls at a relatively exposed location of the hammer.
It is an object of the present invention to advance the art of pencil sharpeners of the above type by satisfying both the requirement of an inexpensive production of the pencil sharpener and convenient location which would be as close as possible to the measuring tape with which the marking pencil is used very frequently.
In general terms, the present invention provides a pencil sharpener comprising, in combination: a body having a conical cavity therein, the cavity extending longitudinally of the body and defining a large opening at a first face of said body, for receiving the tip of a pencil; a cutting blade receiving slot being provided in the wall of said conical cavity adjacent a ~L2~
generally flat base section forming a part of the body and supporting a flat sharpening blade such that a sharp edge thereof protrudes partly into and along the cavity with the sharpening blade disposed generally tangentially to the wall of the cavity;
a flat mounting piece fixedly secured to an outer surface of the body and protruding therefrom in a direction generally transverse to the axis of said cavity.
It is preferred that the mounting piece be disposed relative to the body such that the body is located disposed generally entirely to one side of a reference plane of coincidence with the mounting piece.
In one preferred embodiment, the mounting piece is a first leg portion of a springy clip whose æecond leg portion resiliently overlaps the first leg portion and merges with same at a generally U-shaped, rounded joinder which rounded joinder is wrapped around the body of the sharpener and is fixedly secured to same.
In another preferred embodiment, the mounting piece is a flat plate which is complementary with that leg of a clip of an existing measuring tape housing which coincides with the housing of the respective measuring tape. Accordingly, the plate or tab of the pencil sharpener holder can be clamped between the existing clip and the housing of an existing measuring tape without the need for discarding the existing clip.
The invention will be described by way of two exemplary embodiments and with reference to the accompanying, diagrammatic, simplified drawings, wherein:
FIGURE 1 is a perspective view of a first embodiment of a pencil sharpener holder of the present invention;
FIGURE 2 is section II - II of FIGURE 1;
FIGURE 3 is section III - III of FIGURE 2;
FIGURE 4 is a perspective view similar to that of FIGURE 1 but showing a second embodiment of the present invention in a mode in which it is about to be attached to an existing housing of a measuring tape;
FIGURE 5 is section V - V of FIGURE 4;
FIGURE 6 is section VI - VI of FIGURE 5; and ~.
FIGURE 7 is a simplifiPd perspective view of the pencil sharpener holder of the second embodiment. In the representation of FIGURE 7, the body of the sharpener and the existing clip of a measuring tape housing have been deleted to show the structural features of the holder itself.
The structure of a manual pencil sharpener is well know and does not have to be described or shown in great detail. In general terms, a pencil sharpener such as the one used in the present invention presents a body 10 of a suitable plastic material. The body 10 is provided with a conical cavity 11 which extends longitudinally along an axis A indicated in FIGURES 1, 3 and 6. It can be seen from the drawings that the axis A extends longitudinally of the body 10. The conical cavity 11 defines a large opening 12 at a first face 13 of the body 10, and a small opening 14 at the second face 15 of the body 10.
As is well known, the inside wall of the conical cavity is discontinued at a longitudinal slot 16. A flat base 17 is provided in the body 10 near the slot 16, for securement to the body 10 of a cutting blade 18. The blade 18 is generally tangential with and slightly protrudes into the cavity 11 at the slot 16. The slot 16 provides a discharge passage for the shavings produced by the sharpening. In the exemplary embodiment of FIGURES 1 - 3, there is provided a longitudinal cutout 19 which provides access to the flat base 17 which base faces downwardly and is provided to receive a securement screw 20 (FIGURE 3) holding the blade 18 in place. It can be seen from the drawings of FIGURES 1 - 3 that the housing 10 is of a generally cylindric configuration except for the slot 16. The housing is surrounded by a spring steel yoke section 21 which is generally U-shaped. It is wrapped around the housing and the housing is injection molded from a suitable plastic material such that it is fixedly secured to the yoke section. The yoke forms a part of a clip which has a first leg 22 and a second leg 23.
It can be best seen from FIGURE 2, that the first leg 22 presents an embodiment of what can be generally referred to as a flat mounting piece which is fixedly secured to the surface of the body 10. FIGURE 2 shows that the first leg 22 protrudes from the body 10 in a direction generally transverse to the axis A of the cavity. In the embodiment of FIGURE 2 (and also of th~
remaining FIGURES 4 - 6) the mounting piece or first leg 22 is generally tangentially disposed relative to the body 10. Thus, the body 10 is disposed generally entirely to the left side of a reference plane B (FIGURE 2) of coincidence with the mounting piece 22. The second leg 23 resiliently overlaps the first leg 22 and is provided at a lower end with an outwardly directed lip 10 24, as is well known in the art of belt securement clips used in the art of measuring tapes.
The second leg 23 has a cutout 25 therein. The cutout 25 coincides with an opening 26 in the first leg 22. The opening 26 allows passage of a screw by which the second leg 22 can be 15 fixedly secured to an object such as a housing 28 of a measuring tape. With the screw 27 in place, the leg 22 is clamped to the housing 28 of a measuring tape. Accordingly, the clip generally formed by the leg 23 and the outwardly protruding lip 24 is operative in securement of the housing 28 to the belt of a 20 carpenter or the like. At the same time, the securement of the pencil sharpener practically becomes a part of the -tape housing 28.
Another embodiment of the invention is shown in FIGURES 4 -7 and will now be described in greater detail.
AS in the case of the first embodiment, there is provided a body 29 defining a conical cavity 30 having a large opening 31 at one face 32 of the body 29 and a small opening 33 at the other face 34 of the body 29. A blade 35 is secured to a flat base on top of the body 29 and protrudes with its sharp edge into the 30 cavity 30.
Turning now particularly to FIGURE 7, it can be seen that a holder is provided which is comprised of a flat tab 36 with an enlarged circular cutout 37 for a mounting screw. The top edge 38 of the holder is slanted in compliance with the slope 35 corresponding to the convergence of the conical cavity 30. The upper edge is provided with an inwardly turned flange. The portion immediately below the flange 3~ is marked as an upper section 39. It is fixedly secured by injection molding to the body 29. Even though the rear surface of the body 29, which coincides with the upper section 39, is flat and planar, the general tangential elongation of the tab 36 is readily apparent from FIGURE 5. The securement of the body 29 to the tab 36 is further assisted by a pair of hooks 40, 41, which envelope the exterior of the body 29 at the extremes thereof.
Assuming now that it is desired to secure the body 29 to the housing of a measuring tape with which the tab 36 was made complementary, the clip 42 of the housing which is already available at the measuring tape housing is first removed by unscrewing the screw holding the back leg 43 flush against the housing. The tab 36 is then inserted behind the backing leg 43 whereupon the screw holding the back leg 43 against the housing (the screw and the housing not shown in FIGU~ES 4 - 6) is reapplied whereby the body 29 is now secured to an existing housing of a measuring tape.
The advantage of the second described embodiment over the first embodiment is in that it is less expensive to produce.
Also, it does not require the discarding of an existing clip ~2 which, in the embodiment of FIGURES 1 - 3 is replaced by the entire assembly as described.
The securement of the pencil sharpener to an existing housing of a measuring tape is economic. There is no need for providing a new housing for the tape which would, in fact, equal to prcviding a brand new tape assembly. In case of the first embodiment, the replacement part is in effect the clip of the housing, one of the least expensive parts of the product. In the second embodiment even the clip may remain due to the compactability of the size and shape of the tab 36 with an existing housing of a measuring tape. In both cases, a substantial part of an existing measuring tape assembly is utilized.
Those skilled in the art will readily appreciate that many other embodiments of the present invention may be provided without departing from the scope of the present invention.
Accordingly, I wish to secure by letters patent which may issue on this application all such embodiments as properly fall within the scope of my contribution to the art.
The present invention relates to the art of psnoil sharpeners and in paxticular to pencil sharpeners for use by tradesmen such as carpenters or plumbers.
Carpenters or plumbers require a frequsnt æharpening of a pencil the lead of which has the tendency to break. It is important for practical use of a sharpener by a tradesman that the sharpener be provided at a place which is readily and conveniently accessible. To this end, reference may be had to Canadian Patent 7~5,934 issued January 18, 1966 to Maurice Laroche and describing a housing for a measuring tape which embodies at one corner thereof a pencil sharpener. While this arrangement may provide a convenient location of the pencil sharpener, it has a very substantial disadvantage in that it cannot be used with existing housings of measuring tapes some of which are quite expensive. It is likely that the expense of manufacture of the ~aroche pencil sharpener was the reason why it does not appear to have found a substantial acceptance in the trade.
It has also been proposed, for instance in Canadian Patent 729,838, issued March 15, 1966 to F. Chipman et al,, to provide a pencil sharpener within the handle of a hammer. As in the first mentioned case, such arrangement is relatively expensive and it also requires the weakening of the structure o~ the hammer handle itself, not to mention the potential damage to the sharpener which ls at a relatively exposed location of the hammer.
It is an object of the present invention to advance the art of pencil sharpeners of the above type by satisfying both the requirement of an inexpensive production of the pencil sharpener and convenient location which would be as close as possible to the measuring tape with which the marking pencil is used very frequently.
In general terms, the present invention provides a pencil sharpener comprising, in combination: a body having a conical cavity therein, the cavity extending longitudinally of the body and defining a large opening at a first face of said body, for receiving the tip of a pencil; a cutting blade receiving slot being provided in the wall of said conical cavity adjacent a ~L2~
generally flat base section forming a part of the body and supporting a flat sharpening blade such that a sharp edge thereof protrudes partly into and along the cavity with the sharpening blade disposed generally tangentially to the wall of the cavity;
a flat mounting piece fixedly secured to an outer surface of the body and protruding therefrom in a direction generally transverse to the axis of said cavity.
It is preferred that the mounting piece be disposed relative to the body such that the body is located disposed generally entirely to one side of a reference plane of coincidence with the mounting piece.
In one preferred embodiment, the mounting piece is a first leg portion of a springy clip whose æecond leg portion resiliently overlaps the first leg portion and merges with same at a generally U-shaped, rounded joinder which rounded joinder is wrapped around the body of the sharpener and is fixedly secured to same.
In another preferred embodiment, the mounting piece is a flat plate which is complementary with that leg of a clip of an existing measuring tape housing which coincides with the housing of the respective measuring tape. Accordingly, the plate or tab of the pencil sharpener holder can be clamped between the existing clip and the housing of an existing measuring tape without the need for discarding the existing clip.
The invention will be described by way of two exemplary embodiments and with reference to the accompanying, diagrammatic, simplified drawings, wherein:
FIGURE 1 is a perspective view of a first embodiment of a pencil sharpener holder of the present invention;
FIGURE 2 is section II - II of FIGURE 1;
FIGURE 3 is section III - III of FIGURE 2;
FIGURE 4 is a perspective view similar to that of FIGURE 1 but showing a second embodiment of the present invention in a mode in which it is about to be attached to an existing housing of a measuring tape;
FIGURE 5 is section V - V of FIGURE 4;
FIGURE 6 is section VI - VI of FIGURE 5; and ~.
FIGURE 7 is a simplifiPd perspective view of the pencil sharpener holder of the second embodiment. In the representation of FIGURE 7, the body of the sharpener and the existing clip of a measuring tape housing have been deleted to show the structural features of the holder itself.
The structure of a manual pencil sharpener is well know and does not have to be described or shown in great detail. In general terms, a pencil sharpener such as the one used in the present invention presents a body 10 of a suitable plastic material. The body 10 is provided with a conical cavity 11 which extends longitudinally along an axis A indicated in FIGURES 1, 3 and 6. It can be seen from the drawings that the axis A extends longitudinally of the body 10. The conical cavity 11 defines a large opening 12 at a first face 13 of the body 10, and a small opening 14 at the second face 15 of the body 10.
As is well known, the inside wall of the conical cavity is discontinued at a longitudinal slot 16. A flat base 17 is provided in the body 10 near the slot 16, for securement to the body 10 of a cutting blade 18. The blade 18 is generally tangential with and slightly protrudes into the cavity 11 at the slot 16. The slot 16 provides a discharge passage for the shavings produced by the sharpening. In the exemplary embodiment of FIGURES 1 - 3, there is provided a longitudinal cutout 19 which provides access to the flat base 17 which base faces downwardly and is provided to receive a securement screw 20 (FIGURE 3) holding the blade 18 in place. It can be seen from the drawings of FIGURES 1 - 3 that the housing 10 is of a generally cylindric configuration except for the slot 16. The housing is surrounded by a spring steel yoke section 21 which is generally U-shaped. It is wrapped around the housing and the housing is injection molded from a suitable plastic material such that it is fixedly secured to the yoke section. The yoke forms a part of a clip which has a first leg 22 and a second leg 23.
It can be best seen from FIGURE 2, that the first leg 22 presents an embodiment of what can be generally referred to as a flat mounting piece which is fixedly secured to the surface of the body 10. FIGURE 2 shows that the first leg 22 protrudes from the body 10 in a direction generally transverse to the axis A of the cavity. In the embodiment of FIGURE 2 (and also of th~
remaining FIGURES 4 - 6) the mounting piece or first leg 22 is generally tangentially disposed relative to the body 10. Thus, the body 10 is disposed generally entirely to the left side of a reference plane B (FIGURE 2) of coincidence with the mounting piece 22. The second leg 23 resiliently overlaps the first leg 22 and is provided at a lower end with an outwardly directed lip 10 24, as is well known in the art of belt securement clips used in the art of measuring tapes.
The second leg 23 has a cutout 25 therein. The cutout 25 coincides with an opening 26 in the first leg 22. The opening 26 allows passage of a screw by which the second leg 22 can be 15 fixedly secured to an object such as a housing 28 of a measuring tape. With the screw 27 in place, the leg 22 is clamped to the housing 28 of a measuring tape. Accordingly, the clip generally formed by the leg 23 and the outwardly protruding lip 24 is operative in securement of the housing 28 to the belt of a 20 carpenter or the like. At the same time, the securement of the pencil sharpener practically becomes a part of the -tape housing 28.
Another embodiment of the invention is shown in FIGURES 4 -7 and will now be described in greater detail.
AS in the case of the first embodiment, there is provided a body 29 defining a conical cavity 30 having a large opening 31 at one face 32 of the body 29 and a small opening 33 at the other face 34 of the body 29. A blade 35 is secured to a flat base on top of the body 29 and protrudes with its sharp edge into the 30 cavity 30.
Turning now particularly to FIGURE 7, it can be seen that a holder is provided which is comprised of a flat tab 36 with an enlarged circular cutout 37 for a mounting screw. The top edge 38 of the holder is slanted in compliance with the slope 35 corresponding to the convergence of the conical cavity 30. The upper edge is provided with an inwardly turned flange. The portion immediately below the flange 3~ is marked as an upper section 39. It is fixedly secured by injection molding to the body 29. Even though the rear surface of the body 29, which coincides with the upper section 39, is flat and planar, the general tangential elongation of the tab 36 is readily apparent from FIGURE 5. The securement of the body 29 to the tab 36 is further assisted by a pair of hooks 40, 41, which envelope the exterior of the body 29 at the extremes thereof.
Assuming now that it is desired to secure the body 29 to the housing of a measuring tape with which the tab 36 was made complementary, the clip 42 of the housing which is already available at the measuring tape housing is first removed by unscrewing the screw holding the back leg 43 flush against the housing. The tab 36 is then inserted behind the backing leg 43 whereupon the screw holding the back leg 43 against the housing (the screw and the housing not shown in FIGU~ES 4 - 6) is reapplied whereby the body 29 is now secured to an existing housing of a measuring tape.
The advantage of the second described embodiment over the first embodiment is in that it is less expensive to produce.
Also, it does not require the discarding of an existing clip ~2 which, in the embodiment of FIGURES 1 - 3 is replaced by the entire assembly as described.
The securement of the pencil sharpener to an existing housing of a measuring tape is economic. There is no need for providing a new housing for the tape which would, in fact, equal to prcviding a brand new tape assembly. In case of the first embodiment, the replacement part is in effect the clip of the housing, one of the least expensive parts of the product. In the second embodiment even the clip may remain due to the compactability of the size and shape of the tab 36 with an existing housing of a measuring tape. In both cases, a substantial part of an existing measuring tape assembly is utilized.
Those skilled in the art will readily appreciate that many other embodiments of the present invention may be provided without departing from the scope of the present invention.
Accordingly, I wish to secure by letters patent which may issue on this application all such embodiments as properly fall within the scope of my contribution to the art.
Claims (6)
1. A pencil sharpener comprising, in combination:
(a) a body having a conical cavity therein, the cavity extending longitudinally of the body and defining a large opening at a first face of said body, for receiving the tip of a pencil;
(b) a slot for receiving a cutting blade being provided in the wall of said conical cavity adjacent a generally flat outer base section forming a part of the body and supporting a flat sharpening blade such that a sharp edge thereof protrudes partly into and along the cavity with the sharpening blade disposed generally tangentially to the wall of the cavity;
(c) an elongate mounting piece fixedly secured to an outer surface of the body and protruding therefrom in a direction generally transverse to the direction of the axis of said cavity.
(a) a body having a conical cavity therein, the cavity extending longitudinally of the body and defining a large opening at a first face of said body, for receiving the tip of a pencil;
(b) a slot for receiving a cutting blade being provided in the wall of said conical cavity adjacent a generally flat outer base section forming a part of the body and supporting a flat sharpening blade such that a sharp edge thereof protrudes partly into and along the cavity with the sharpening blade disposed generally tangentially to the wall of the cavity;
(c) an elongate mounting piece fixedly secured to an outer surface of the body and protruding therefrom in a direction generally transverse to the direction of the axis of said cavity.
2. A pencil sharpener as claimed in claim 1, wherein the mounting piece is generally tangentially disposed relative to the body, whereby the body is located generally entirely to one side of a reference plane of coincidence with the mounting piece.
3. A pencil sharpener as claimed in claim 1 or claim 2, wherein the mounting piece is a flat first leg portion of a generally U-shaped springy clip whose second leg portion resiliently overlaps the first leg portion and merges with same at a yoke section wrapped around the body of the sharpener and is fixedly secured to same.
4. A pencil sharpener as claimed in claim 1 or claim 2, wherein the mounting piece is a first leg portion of a generally U-shaped springy clip whose second leg portion resiliently overlaps the first leg portion and merges with same at a yoke section wrapped around the body, said first leg portion being provided with a passage for a mounting screw and said second leg portion being provided with an access cutout complementary with the passage, to facilitate manipulation of a screw passing through said passage.
5. A pencil sharpener as claimed in claim 1 or claim 2, wherein the mounting piece is a first leg portion of a generally U-shaped springy clip whose second leg portion resiliently overlaps the first leg portion and merges with same at a yoke section wrapped around the body, said first leg portion being provided with a passage for a mounting screw and said second leg portion being provided with an access cutout complementary with the passage, to facilitate manipulation of a screw passing through said passage, said first leg portion being of a size complementary with the size of a leg portion of a clip of a predetermined type or types of the housing of a measuring tape, whereby the sharpener can be secured to such housing in lieu of an existing clip of the housing.
6. A pencil sharpener as claimed in claim 1 or claim 2, wherein said mounting piece is a flat plate complementary with that leg of a clip of an existing measuring tape housing which coincides with the exterior of the housing, whereby the plate can be clamped between the respective measuring tape housing and one leg of an existing clip thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000578649A CA1256340A (en) | 1988-09-28 | 1988-09-28 | Clip for pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000578649A CA1256340A (en) | 1988-09-28 | 1988-09-28 | Clip for pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1256340A true CA1256340A (en) | 1989-06-27 |
Family
ID=4138800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000578649A Expired CA1256340A (en) | 1988-09-28 | 1988-09-28 | Clip for pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1256340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711085A (en) * | 1996-05-21 | 1998-01-27 | Adams; Thomas F. | Writing instrument holding clip for retractable tape |
| RU2679612C1 (en) * | 2018-05-14 | 2019-02-12 | Евгений Николаевич Де | Measuring tape |
-
1988
- 1988-09-28 CA CA000578649A patent/CA1256340A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711085A (en) * | 1996-05-21 | 1998-01-27 | Adams; Thomas F. | Writing instrument holding clip for retractable tape |
| RU2679612C1 (en) * | 2018-05-14 | 2019-02-12 | Евгений Николаевич Де | Measuring tape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |