CA1101752A - File folder with expandable pocket - Google Patents
File folder with expandable pocketInfo
- Publication number
- CA1101752A CA1101752A CA303,853A CA303853A CA1101752A CA 1101752 A CA1101752 A CA 1101752A CA 303853 A CA303853 A CA 303853A CA 1101752 A CA1101752 A CA 1101752A
- Authority
- CA
- Canada
- Prior art keywords
- leaf
- file folder
- tab
- slits
- 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
- Sheet Holders (AREA)
Abstract
FILE FOLDER WITH EXPANDABLE POCKET
ABSTRACT OF THE DISCLOSURE
A one-piece file folder for use in vertical, lateral, ro-tary and similar files having an improved expandable pocket with a locking tab that is slidable in accordance with the amount of papers disposed within the pocket.
ABSTRACT OF THE DISCLOSURE
A one-piece file folder for use in vertical, lateral, ro-tary and similar files having an improved expandable pocket with a locking tab that is slidable in accordance with the amount of papers disposed within the pocket.
Description
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The present invention relates to file folders and, more particularly, to improved one-piece folders arranged to be filed vertically or horizontally and having interlocking pockets that slidably expand or contract in accordance with the papers added or removed therefrom.
The most pertinent prior art is applicant's patent No.
3,933,294 wherein the expandable pocket is of the accordian type.
A non-expandable pocket in a file folder is shown in patent No.
1,774,215.
SUMMARY OF THE INVENTION
, .
Accordingly, an object of the present invention is to 20provide an improved file folder having a flexible, interlocking -pocket.
Another object of the invention is to provide a flexible pocket in a file folder such that the pocket will expand and con- -tract readily when filing material is added or removed therefrom.
~ further object of the invention is to provide an improved fi~ folder having an expandable pocket that is a sturdy and dur- ~-able container for a substantial amount of filing material.,~
A still further object of the invention is to accomplish .
the foregoing objects in a simple, practical and economical manner.
In accordance with the present invention, the foregoing ~k 72,2 objects are generally accomplished by providing an expandable pocket in a folder that can be filed with its closed or spine side fact out, or up, depending on the file in use. Accordingly, the essence of this invention resides in the expandable pocket as an improvement in applicant's patent No. 3,933,294, which includes a protruding tab on one element of the pocket that slides in slots provided in another element of the pocket, whereby both elements of the pocket are adjustably locked together to provide a sub-stantial container for filing material disposed therein.
In general terms, the present invention can also be defined as providing, in a file folder formed from a single flat sheet having a front 'eaf, a back leaf, a side leaf and a bottom leaf extending from said back leaf in which a pocket for containing filing material is formed by the back, side and bottom leaves and in which upper edges of said front, back, side and bottom leaves are open and exposed for permitting ready insertion and withdrawal of papers, the improvement which comprises slidable means including a T shaped tab on said bottom leaf, said bottom leaf being folded over said back leaf, and guiding means having spaced slits for said sliding means on said side leaf for adjustably arranging said pocket, said side leaf being folded over said bottom leaf and also over said back leaf, said T shaped tab being folded over a side edge of said side leaf for mesh engagement of said tab with said slits whereby, whe~ said tab and slits are interconnected, said pocket can be expanded or contracted as filing material is added to or removed from said pocket. Preferably, said T shaped tab includes an elongated neck, portion extending from a side of said bottom leaf and a pair of protuberances extending from said neck portion, said protuberances being at right angles to said neck portion. In accordance with another feature of the present invention, a rigid triangular spine is formed at the juncture of said front lea~ and back leaf.
, f~ '752 BRIEF DESCRIPTION OF THE DR~WINGS
A preferred embodiment of the invention has been chosen for purposes of illustration and description and is shown in the accompanying drawings, forming a part of the specification, wherein:
Fig. 1 is a top plan view of blank cut màterial for a folder showing score lines and stippled areas representing glue portions.
Fig. 2 is a top plan view of the folder of Fig. 1 showing the bottom flap with its tab folder upwardly over the main body of the folder and with glue portions sealed to provide the spine portion of the folder.
Fig. 3 is an end elevational view taken in the direction of the arrows 3-3 of Fig. 2.
Fig 4 is a top plan view showing the folder of Fig. 2 with its right fla~ folded to the left over the main body and with the upper protuberance of the bifurcated tab inserted with a slit provided in the right flap.
Fig. 5 is a sectional view taken along 5-5 on Fig. 8 showing both protuberances of the tab inserted into associated slits of the right flap.
Fig. 6 is an enlarged sectional view taken along 6-6 of Fig. 4 showing glued spine portion with tubular element inserted ~ ' ~
.~ .
- 2a -~0175;~
within spine opening for reinforcing the same.
Fig. 7 is a perspective view of the folder showing the positions of the protuberances in the slits and formation of the adjustable pocket during minimal displacement of the pocket.
Fig. 8 is a perspective view of the folder showing the position of the protuberances in the slits and formation of the adjustable pocket during substantially maximal displacement of the pocket.
DESCRIPTION OF PREFERRED EMBODIMENT
Referring now to Figs. 1 to 8 of the drawings in detail, there is shown in Fig. 1 a flat sheet 10 of suitable folder mater-ial, such as oak tag stock or 1 ply Manila tag. As viewed in Fig. 1, the sheet is subdivided into four portions 11,12,13 and 14 by score lines 16,17,18 and 19, portions 11 and 14 to be used in forming a pocket and portions 12 and 13 for the back and front leaves, respectively, of the folder, as will appear hereinafter.
Glue portions 21 are for securing contiguous portions 12 and 13 together.
In assembling the folder, after the sheet 10 has been die-cut, the first step i~ to score the lines 16,17,18 and 19 so as to pxovide accordian type expansion æones, after which the por-tion 14 is folded upwardly along the score lines 18 as viewed in Figs. 2 and 3. For clarity, arrows 1,2 and 3 in Figs. 2 and 3 indicate the order in which portions 14, 11 and 13, respectively, are folded. Portion 11 is then folded along the score lines 16 to the left to overlap portion 14 to lay the basis for a pocket ; to be formed, as will be described hereinafter.
The next step is to prepare a spine 22 for the folder.
This is done, see Figs. 1,3 and 6, by applying glue to both portions 21, folding the sheet 10 along the score lines 17 to secure the glued portions together and to form a triangular spine 22 in cr~ss section, as seen particularly in Fig. b and also in , Figs. 3,7 and 8. The sheet lQ is then folded along the right edge of glued portion 21, as seen in Fig. 3, so that portion 13 is adhesively secured to portion 12 to thereby provide a reinforced spine 22, including sides 23,24 and 26(Fig.6) forming the triangle and reinforcing glued leg 27. To additionally reinforce the spine 22 there is shown a tubular element 28, preferably of plastic material.
To return to formation of the pocket for the folder, portion 14 is formed with a tab 29 extending, as seen in Fig. 1, from the lower left corner thereof. This tab 29 includes a neck 31, extending from portion 14, and bifurcated protuberances 32 and 33. When the portion 14 i5 folded upwardly to the position shown in 2, the respective positions of the protuberances 32 and 33 are reversed. With the right portion 11 folded to the left and over portion 14, as already desc~ibed, the pocket is formed, see Fig. 4, by folding the tab 29 along its junction line 34 with portion 14 over the left edge 36 of portion 11 and the protuberance 33 inserted through a slit 37 provided in portion 11. As seen in Fig. 7, the other protuberance 34 of tab 29 is in-serted through a second slit 38 provided in portion 11, to com-plete formation of an adjustable pocket 39.
It is to be noted that the protuberances 32,33 are slid-able in their respective slits 38,37 and their penetration through the slits is in accordance ~ith the amount of material ~not shown~ deposi~ed into the poc~et 39. When the amount of material is comparatively small, Fig. 7 shows the disposition of the tab protuberances, while Fig. 8 shows the pocket 39 expanded for a su~stantial amount of material to ~e placed therein, *ith the score lines 16,18 of portions Il and 14 assisting in the ex-pansion. As presently constituted, the expanded pocket 39 ~is ad-apted to hold the weight of ahout 1 inch of filing material.
Of course, referring again to Figs. 7 and 8, the left portion 13 is folded over the portions 11, 12 and 14 to close the folder for filing purposes.
From the foregoing description, it will be seen that the present invention provides an improved folder, particularly in-cluding its expandable pocket, which safely and securely holds papers, pamphlets, a book, or other mat~rials over one inch thick.
As various changes may be made in the form, construction and arrangement of the parts herein, without ~eparting from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matters are to be ; interpreted as illustrative and not in any limiting sense.
:~0 .
: ' . `
: ~ :
, . . ~ .
FIELD OF THE INVENTION
The present invention relates to file folders and, more particularly, to improved one-piece folders arranged to be filed vertically or horizontally and having interlocking pockets that slidably expand or contract in accordance with the papers added or removed therefrom.
The most pertinent prior art is applicant's patent No.
3,933,294 wherein the expandable pocket is of the accordian type.
A non-expandable pocket in a file folder is shown in patent No.
1,774,215.
SUMMARY OF THE INVENTION
, .
Accordingly, an object of the present invention is to 20provide an improved file folder having a flexible, interlocking -pocket.
Another object of the invention is to provide a flexible pocket in a file folder such that the pocket will expand and con- -tract readily when filing material is added or removed therefrom.
~ further object of the invention is to provide an improved fi~ folder having an expandable pocket that is a sturdy and dur- ~-able container for a substantial amount of filing material.,~
A still further object of the invention is to accomplish .
the foregoing objects in a simple, practical and economical manner.
In accordance with the present invention, the foregoing ~k 72,2 objects are generally accomplished by providing an expandable pocket in a folder that can be filed with its closed or spine side fact out, or up, depending on the file in use. Accordingly, the essence of this invention resides in the expandable pocket as an improvement in applicant's patent No. 3,933,294, which includes a protruding tab on one element of the pocket that slides in slots provided in another element of the pocket, whereby both elements of the pocket are adjustably locked together to provide a sub-stantial container for filing material disposed therein.
In general terms, the present invention can also be defined as providing, in a file folder formed from a single flat sheet having a front 'eaf, a back leaf, a side leaf and a bottom leaf extending from said back leaf in which a pocket for containing filing material is formed by the back, side and bottom leaves and in which upper edges of said front, back, side and bottom leaves are open and exposed for permitting ready insertion and withdrawal of papers, the improvement which comprises slidable means including a T shaped tab on said bottom leaf, said bottom leaf being folded over said back leaf, and guiding means having spaced slits for said sliding means on said side leaf for adjustably arranging said pocket, said side leaf being folded over said bottom leaf and also over said back leaf, said T shaped tab being folded over a side edge of said side leaf for mesh engagement of said tab with said slits whereby, whe~ said tab and slits are interconnected, said pocket can be expanded or contracted as filing material is added to or removed from said pocket. Preferably, said T shaped tab includes an elongated neck, portion extending from a side of said bottom leaf and a pair of protuberances extending from said neck portion, said protuberances being at right angles to said neck portion. In accordance with another feature of the present invention, a rigid triangular spine is formed at the juncture of said front lea~ and back leaf.
, f~ '752 BRIEF DESCRIPTION OF THE DR~WINGS
A preferred embodiment of the invention has been chosen for purposes of illustration and description and is shown in the accompanying drawings, forming a part of the specification, wherein:
Fig. 1 is a top plan view of blank cut màterial for a folder showing score lines and stippled areas representing glue portions.
Fig. 2 is a top plan view of the folder of Fig. 1 showing the bottom flap with its tab folder upwardly over the main body of the folder and with glue portions sealed to provide the spine portion of the folder.
Fig. 3 is an end elevational view taken in the direction of the arrows 3-3 of Fig. 2.
Fig 4 is a top plan view showing the folder of Fig. 2 with its right fla~ folded to the left over the main body and with the upper protuberance of the bifurcated tab inserted with a slit provided in the right flap.
Fig. 5 is a sectional view taken along 5-5 on Fig. 8 showing both protuberances of the tab inserted into associated slits of the right flap.
Fig. 6 is an enlarged sectional view taken along 6-6 of Fig. 4 showing glued spine portion with tubular element inserted ~ ' ~
.~ .
- 2a -~0175;~
within spine opening for reinforcing the same.
Fig. 7 is a perspective view of the folder showing the positions of the protuberances in the slits and formation of the adjustable pocket during minimal displacement of the pocket.
Fig. 8 is a perspective view of the folder showing the position of the protuberances in the slits and formation of the adjustable pocket during substantially maximal displacement of the pocket.
DESCRIPTION OF PREFERRED EMBODIMENT
Referring now to Figs. 1 to 8 of the drawings in detail, there is shown in Fig. 1 a flat sheet 10 of suitable folder mater-ial, such as oak tag stock or 1 ply Manila tag. As viewed in Fig. 1, the sheet is subdivided into four portions 11,12,13 and 14 by score lines 16,17,18 and 19, portions 11 and 14 to be used in forming a pocket and portions 12 and 13 for the back and front leaves, respectively, of the folder, as will appear hereinafter.
Glue portions 21 are for securing contiguous portions 12 and 13 together.
In assembling the folder, after the sheet 10 has been die-cut, the first step i~ to score the lines 16,17,18 and 19 so as to pxovide accordian type expansion æones, after which the por-tion 14 is folded upwardly along the score lines 18 as viewed in Figs. 2 and 3. For clarity, arrows 1,2 and 3 in Figs. 2 and 3 indicate the order in which portions 14, 11 and 13, respectively, are folded. Portion 11 is then folded along the score lines 16 to the left to overlap portion 14 to lay the basis for a pocket ; to be formed, as will be described hereinafter.
The next step is to prepare a spine 22 for the folder.
This is done, see Figs. 1,3 and 6, by applying glue to both portions 21, folding the sheet 10 along the score lines 17 to secure the glued portions together and to form a triangular spine 22 in cr~ss section, as seen particularly in Fig. b and also in , Figs. 3,7 and 8. The sheet lQ is then folded along the right edge of glued portion 21, as seen in Fig. 3, so that portion 13 is adhesively secured to portion 12 to thereby provide a reinforced spine 22, including sides 23,24 and 26(Fig.6) forming the triangle and reinforcing glued leg 27. To additionally reinforce the spine 22 there is shown a tubular element 28, preferably of plastic material.
To return to formation of the pocket for the folder, portion 14 is formed with a tab 29 extending, as seen in Fig. 1, from the lower left corner thereof. This tab 29 includes a neck 31, extending from portion 14, and bifurcated protuberances 32 and 33. When the portion 14 i5 folded upwardly to the position shown in 2, the respective positions of the protuberances 32 and 33 are reversed. With the right portion 11 folded to the left and over portion 14, as already desc~ibed, the pocket is formed, see Fig. 4, by folding the tab 29 along its junction line 34 with portion 14 over the left edge 36 of portion 11 and the protuberance 33 inserted through a slit 37 provided in portion 11. As seen in Fig. 7, the other protuberance 34 of tab 29 is in-serted through a second slit 38 provided in portion 11, to com-plete formation of an adjustable pocket 39.
It is to be noted that the protuberances 32,33 are slid-able in their respective slits 38,37 and their penetration through the slits is in accordance ~ith the amount of material ~not shown~ deposi~ed into the poc~et 39. When the amount of material is comparatively small, Fig. 7 shows the disposition of the tab protuberances, while Fig. 8 shows the pocket 39 expanded for a su~stantial amount of material to ~e placed therein, *ith the score lines 16,18 of portions Il and 14 assisting in the ex-pansion. As presently constituted, the expanded pocket 39 ~is ad-apted to hold the weight of ahout 1 inch of filing material.
Of course, referring again to Figs. 7 and 8, the left portion 13 is folded over the portions 11, 12 and 14 to close the folder for filing purposes.
From the foregoing description, it will be seen that the present invention provides an improved folder, particularly in-cluding its expandable pocket, which safely and securely holds papers, pamphlets, a book, or other mat~rials over one inch thick.
As various changes may be made in the form, construction and arrangement of the parts herein, without ~eparting from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matters are to be ; interpreted as illustrative and not in any limiting sense.
:~0 .
: ' . `
: ~ :
, . . ~ .
Claims (9)
1. In a file folder formed from a single flat sheet having a front leaf, a back leaf, a side leaf and a bottom leaf extending from said back leaf in which a pocket for containing filing material is formed by the back, side and bottom leaves and in which upper edges of said front, back, side and bottom leaves are open and exposed for permitting ready insertion and withdrawal of papers, the improvement which comprises slidable means including a T shaped tab on said bottom leaf, said bottom leaf being folded over said back leaf, and guiding means having spaced slits for said sliding means on said side leaf for adjust-ably arranging said pocket, said side leaf being folded over said bottom leaf and also over said back leaf, said T shaped tab being folded over a side edge of said side leaf for mesh engagement of said tab with said slits whereby, when said tab and slits are interconnected, said pocket can be expanded or contracted as filing material is added to or removed from said pocket.
2. In the file folder of claim 1, wherein said T shaped tab includes an elongated neck, portion extending from a side of said bottom leaf and a pair of protuberances extending from said neck portion, said protuberances being at right angles to said neck portion.
3. In the file folder of claim 2, wherein said neck portion extends from the side of said bottom leaf at an acute angle and is adapted to overlay said side leaf.
4. In the file folder of claim 3, wherein said bottom leaf side is in substantial alignment with a side of said side leaf.
5. In the file folder of claim 4, wherein said spaced slits are substantially parallel with side edges of said neck portion when laid over said side leaf.
6. In the file folder of claim 5, wherein each of said protuberances of said tab is slidably disposed in said slits with said tab overlaying said side leaf.
7. In the file folder of claim 6, wherein said bottom leaf and said side leaf include a plurality of score lines for enabling said pocket to expand while said protuberances are slidably engageable in said slits.
8. In the file folder of claim 1, wherein a rigid triangular spine is formed at the juncture of said front leaf and back leaf.
9. In the file folder of claim 8, wherein a tubular element is disposed in said triangular spine for reinforcing said spine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA303,853A CA1101752A (en) | 1978-05-23 | 1978-05-23 | File folder with expandable pocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA303,853A CA1101752A (en) | 1978-05-23 | 1978-05-23 | File folder with expandable pocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1101752A true CA1101752A (en) | 1981-05-26 |
Family
ID=4111521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA303,853A Expired CA1101752A (en) | 1978-05-23 | 1978-05-23 | File folder with expandable pocket |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1101752A (en) |
-
1978
- 1978-05-23 CA CA303,853A patent/CA1101752A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |