DK152838B

DK152838B - DOCUMENT HOLDER

Info

Publication number: DK152838B
Application number: DK448277A
Authority: DK
Inventors: David M Wright; Jerome M O'toole; Norman A Hedstroem
Original assignee: Wright Line Inc
Priority date: 1976-11-12
Filing date: 1977-10-10
Publication date: 1988-05-24
Also published as: IT1083746B; DK152838C; JPS6018558B2; CH617622A5; DE7725530U1; GB1555273A; FR2370597A1; CA1099174A; NL7708882A; JPS5363130A; GB1555272A; DE2737128A1; DE2737128C2; DK448277A; BR7706262A; SE7708119L; FR2370597B1; SE431731B

Description

iin

DK 152838 BDK 152838 B

Opfindelsen angår en formstofdokumentholder som nærmere angivet i krav l's indledning.The invention relates to a plastic document holder as further specified in the preamble of claim 1.

En beslægtet dokumentholder ifølge nævnte USA patentskrift nr. 3.980.360 gør brug af indbyrdes adskilte tappe, som kom-5 mer i indgreb med huller langs kanten af det arkformede mate riale, så at dette understøttes i ophængt tilstand. De understøttende tappe er borttagelic£ og kan indsættes i udvalgte huller i dokumentholderen. I denne forbindelse forefindes der fastgørelsesmidler til sikring af, at tappene er sikkert fast-10 holdt på deres plads efter indsættelse i dokumentholderen.A related document holder according to the United States patent specification 3,980,360 makes use of mutually spaced pins which engage holes along the edge of the sheet-shaped material so that it is supported in suspended condition. The supporting tabs are removable and can be inserted into selected holes in the document holder. In this connection, fasteners are provided to ensure that the pins are securely held in place after insertion into the document holder.

Til lettelse af den hurtige indsætning eller fjernelse af dokumenter må tappene endvidere komme i indgreb med dokumentholderen på en måde, som tillader let fjernelse derfra. Endelig må tappene altid være vinkelret på i det mindste den ene 15 væg i dokumentholderen til lettelse af den førnævnte fjern else og indsættelse af dokumenter og til forebyggelse af en udvidelse af hullerne, som skal optage tappene, samt anden beskadigelse af dokumenterne.Furthermore, to facilitate the quick insertion or removal of documents, the tabs must engage the document holder in a manner that allows easy removal from them. Finally, the pins must always be perpendicular to at least one wall of the document holder to facilitate the aforementioned removal and insertion of documents and to prevent the widening of the holes which are to occupy the pins and other damage to the documents.

Ovennævnte betingelser må forliges med kravet om økonomi, 20 som gør det ønskværdigt at fremstille dokumentholderen og de borttagelige tappe ved passende processer såsom støbning af formstofmateriale. De viste tappe må have tilstrækkelig styrke til at bære et bundt dokumenter i ophængt stilling, eller medens dokumentholderen midlertidigt er åben, og tap-25 pene kun understøttes i den ene ende.The above conditions must be reconciled with the requirement of economy, which makes it desirable to produce the document holder and the removable pins by appropriate processes such as molding of plastic material. The tabs shown must be of sufficient strength to carry a bundle of documents in the suspended position or while the document holder is temporarily open and the tabs are supported only at one end.

Hvor der benyttes borttagelige tappe i den kendte tekniks holdere, mangler den fremkomne struktur ofte den fornødne stivhed til sikring af, at tappene forbliver vinkelret på holderen hele tiden. Hvis disse tappe er af snaptypen, kan 30 særligt værktøj til indsættelse og fjernelse af tappene være nødvendigt. Endvidere kan der kræves en urimeligt stor kraft til fjernelse af tappene, eller sammenlåsningsforbindelsen mellem tappene og holderen kan være upålidelig. Hvis der benyttes gevindforsynede tappe, som kommer i indgreb med i 35 forvejen fremstillede huller i dokumentholderen, opstår der problemet med økonomisk tilvejebringelse af indvendigt gevindforsynede huller som en del af støbeoperationen for dokumenthoIderen eller som en efterfølgende fremstillings- 2Where removable pins are used in the prior art holders, the resulting structure often lacks the necessary rigidity to ensure that the pins remain perpendicular to the holder at all times. If these pins are of the snap type, 30 special tools for inserting and removing the pins may be necessary. Furthermore, an excessive force may be required to remove the pins, or the interlocking connection between the pins and the holder may be unreliable. If threaded pins are used which engage 35 pre-made holes in the document holder, the problem of economically providing internal threaded holes arises as part of the molding operation for the document holder or as a subsequent manufacturing process.

DK 152838 BDK 152838 B

operation.operation.

I nogle arrangementer, f.eks. i den dokumentholder, som er beskrevet i det førnævnte USA patentskrift 3.980.360, er tappene aldrig helt fjernet, når det arkformede materiale indsættes eller udtages.In some events, e.g. in the document holder described in the aforementioned United States Patent 3,980,360, the tabs are never completely removed when inserting or removing the sheet-shaped material.

5 Under en sådan operation fjernes tappene fra alene den ene vægsektion, og de fastholdes løst i den modsatte vægsektion, idet de afventer fjernelsen eller tilføjelsen af dokumenter. Det sker hyppigt under en sådan operation, at en eller, flere tappe kommer ud af deres tilbagetrukne stilling som følge af en utilsigtet handling fra betjeningsper-10 sonens side. Når dette sker, vil de tappe, som er kommet ud af stilling, på en meget effektiv måde blokere kanalen og hæmme indsætningen eller fjernelsen af dokumenterne.5 During such an operation, the pins are removed from only one wall section, and they are loosely held in the opposite wall section, awaiting the removal or addition of documents. It is frequent during such an operation that one or more pins come out of their retracted position as a result of an unintended act on the part of the operator. When this happens, the pins that have come out of position will effectively block the channel and impede the insertion or removal of the documents.

Formålet med den foreliggende opfindelse er at anvise en dokumentholder, som ikke har de ovenfor skildrede ulemper.The object of the present invention is to provide a document holder which does not have the disadvantages described above.

15 Gennem den foreliggende opfindelse anvises der en dokumenthol der for arkformet materiale, som kan fremstilles på økonomisk måde, og som tillader let fjernelse og indsættelse af materiale af en betjeningsperson uden behov for specialværktøj.According to the present invention, there is provided a document hole for sheet-shaped material which can be produced economically and which allows easy removal and insertion of material by an operator without the need for special tools.

Der anvises en dokumentholder for arkformet materiale, hvor tap-20 pene for understøtning af materialet er borttageligt fastgjort til dokumentholderen på en sådan måde, at der tilvejebringes den fornødne styrke og stivhed til sikring af, at tappene står vinkelret på dokumentholderen.A document holder for sheet-like material is provided, with the tabs for supporting the material removably attached to the document holder in such a way as to provide the necessary strength and stiffness to ensure that the tabs are perpendicular to the document holder.

Dokumentholderen ifølge opfindelsen er ejendommelig ved det i 25 kravene som kendetegnende anførte.The document holder according to the invention is characterized by the features as claimed in the claims.

Opfindelsen skal forklares nærmere i forbindelse med tegningen, hvor fig. 1 viser et perspektivisk billede af en dokumentholder ifølge opfindelsen, 30 fig. 2 et planbillede nedefra af dokumentholderen i fig. 1 i lukket tilstand, fig. 3 et forstørret tværsnit efter linien 3-3 i fig. 2, og fig. 4 med delene adskilt et tværsnit i en åben dokumentholder og en understøtningstap.The invention will be explained in more detail in connection with the drawing, in which fig. 1 is a perspective view of a document holder according to the invention; FIG. 2 is a bottom plan view of the document holder of FIG. 1 in the closed position; FIG. 3 is an enlarged cross-sectional view taken along line 3-3 of FIG. 2, and FIG. 4 with the parts separated a cross-section in an open document holder and a support tab.

35 I fig. 1 er der perspektivisk vist en kanalformet dokumentholder 2 ifølge opfindelsen sammen med arkformede dokumenter 10, som understøttes i ophængt tilstand i dokumentholderen. Medens opfindelsen ikke 335 In FIG. 1, a channel-shaped document holder 2 according to the invention is shown in perspective together with sheet-shaped documents 10 which are supported in a suspended state in the document holder. While the invention does not 3

DK 152838BDK 152838B

er begrænset dertil, er dokumentholderen af den type, hvor et par væg-sektioner 4 og 6 er indbyrdes forbundet ved hjælp af en hængselsektion 8, som tillader vægsektionerne at dreje i forhold ;til hinanden. Dokumenterne 10 understøttes på et antal understøtningstappe 12, som kom-5 mer i indgreb med nogle udvalgte huller blandt en række huller 14.is limited thereto, the document holder is the type in which a pair of wall sections 4 and 6 are interconnected by a hinge section 8 which allows the wall sections to rotate in relation to each other. The documents 10 are supported on a number of support pins 12 which engage some selected holes among a number of holes 14.

Dokumentholderen er vist i låst tilstand i fig. 1. Vægsektionerne 4 og 6 er i stand til at lukkes og låses mod hinanden til dannelse af en kanal, som er lukket ved begge ender. Den lukkede kanalform ses bedst i tværsnittet i fig. 3. Et par glideknapper 16 er indrettet til 10 at bevæges på den ene side til oplåsning af dokumentholderen. Dette tillader vægsektionerne at drejes bort fra hinanden omkring hængselsektionen 8 til frigørelse af tappene 12, som atter frigør de dokumenter, som hænger ned derfra, eller til optagelse af nye dokumenter.The document holder is shown in the locked state of FIG. 1. The wall sections 4 and 6 are capable of closing and locking against each other to form a channel which is closed at both ends. The closed channel shape is best seen in the cross section of FIG. 3. A pair of sliders 16 is arranged to move 10 on one side to unlock the document holder. This allows the wall sections to be pivoted away from each other around the hinge section 8 for releasing the pins 12, which in turn release the documents hanging therefrom, or for recording new documents.

I brug er dokumentholderen 2 indrettet til at hvile på et par 15 understøtningstænger, som kommer i indgreb med et par U-formede kanaler 18 ved hver ende af dokumentholderen. Alternativt kan en passende understøtningsstang være i indgreb med en rund kanal 20 på dokumentholderen til understøtning af denne på dens plads, medens en passende overflade over den venstre del af hængslet 8 hindrer rotation 20 omkring kanalens 20 akse. Understøtningsstængerne og den nævnte overflade er udeladt i fig. 1 for overskuelighedens skyld.In use, the document holder 2 is arranged to rest on a pair of 15 support rods which engage a pair of U-shaped channels 18 at each end of the document holder. Alternatively, a suitable support bar may engage a circular channel 20 on the document holder to support it in its place, while a suitable surface over the left part of the hinge 8 prevents rotation 20 about the axis of the channel 20. The support bars and said surface are omitted in FIG. 1 for the sake of clarity.

Fig. 2 viser et billede nedefra af den i fig. 1 viste dokumentholder 1, idet dokumenterne 10 er udeladt, så at man ser den indre konstruktion af holderen. Med vægsektionerne 4 og 6 i lukket stilling 25 er de tilsvarende dele af vægsektionerne i indbyrdes kontakt som vist. Som det bedst ses i fig. 3, går understøtningstappe 12 hen over den kanal, som bestemmes af de lukkede vægsektioner, idet hver tap er i indgreb med henholdsvis et hul 13 i vægsektionen 4 og et hul 14 i vægsektionen ό. De konstruktive enkeltheder af hullerne 13 og 14 ses 30 bedst i fig. 4, hvor tappen er vist adskilt fra dokumentholderen. Hullet 13, som til at begynde med er dannet uden gevind, forløber gennem en fortykkelse 22 på den indvendige overflade 24 af vægsektionen 4. Hullet 13 flugter endvidere med en forsænket udboring 32, som munder ud i en stor forsænket udboring 30, Denne sidste udmunder i den ydre 35 overflade 34 af vægsektionen 4. En plan ringformet skulder 36 er dannet mellem de forsænkede boringer 30 og 32. Hullet 14 forløber gennem en fortykkelse 26 på den indvendige overflade 28 af vægsektionen 6 og ender i en forsænket åbning 38, som vender mod fortykkelsen 22.FIG. 2 is a bottom view of the one shown in FIG. 1, the documents 10 being omitted so as to see the inner structure of the holder. With the wall sections 4 and 6 in closed position 25, the corresponding parts of the wall sections are in mutual contact as shown. As best seen in FIG. 3, support pins 12 extend over the channel determined by the closed wall sections, each pin engaging a hole 13 in the wall section 4 and a hole 14 in the wall section ό, respectively. The structural details of holes 13 and 14 are best seen in FIG. 4, where the tab is shown separate from the document holder. The hole 13, initially formed without threads, extends through a thickening 22 on the inner surface 24 of the wall section 4. The hole 13 further aligns with a recessed bore 32 which opens into a large recessed bore 30. in the outer 35 surface 34 of the wall section 4. A flat annular shoulder 36 is formed between the recessed bores 30 and 32. The hole 14 extends through a thickening 26 on the inner surface 28 of the wall section 6 and ends in a recessed opening 38 facing against the thickening 22.

Dokumentholderen er illustreret i sin åbne stilling i fig. 4.The document holder is illustrated in its open position in FIG. 4th

40 Vægsektionen 4 antages at være stationær, medens vægsektionen 6 ses at dreje omkring den akse, som bestemmes af hængselsektionen 8. Tap-The wall section 4 is assumed to be stationary, while the wall section 6 is seen to rotate about the axis determined by the hinge section 8.

DK 152838 BDK 152838 B

4 pen, som er vist for sig, omfatter et fladt hoved 42, som er indrettet til at lejres i den forsænkede boring 30, så at den flugter med eller ligger lavere end den ydre overflade 34 af vægsektionen 4. Undersiden 43 af hovedet 42 er plant og ligger an mod den nævnte plane skul-5 der 36 til sikring af den vinkelrette stilling af tappen 12 i forhold til dokumentholderen, når tappen er helt indsat i hullet. Hovedet 42 omfatter endvidere en slids eller kærv 44, som er indrettet til optagelse af en skruetrækker.4 shown, comprises a flat head 42 which is arranged to be stored in the recessed bore 30 so that it aligns with or is lower than the outer surface 34 of the wall section 4. The underside 43 of the head 42 is flat and abutting the said flat shoulder 36 to secure the perpendicular position of the pin 12 relative to the document holder when the pin is fully inserted into the hole. The head 42 further comprises a slot or groove 44 which is adapted to receive a screwdriver.

Tappen 12 omfatter endvidere en gevindforsynet gevindskærende 10 del nær hovedet 42. Den gevindskærende del har en ensartet større diameter en smule mindre end den indvendige diameter af den forsænkede boring 32, men større end den indvendige diameter af hullet 13. Længden af den gevindskærende del vælges således, at den ikke stikker frem forbi hullet 13, når tappen 12 er helt indsat deri.The pin 12 further comprises a threaded threaded portion 10 near the head 42. The threaded portion has a uniformly larger diameter slightly smaller than the inner diameter of the recessed bore 32, but greater than the inner diameter of the hole 13. The length of the threaded portion is selected. so that it does not protrude past the hole 13 when the pin 12 is fully inserted therein.

15 Den genvindskærende del 46 efterfølges af en skaftdel 48, som slutter i en afrundet fri ende. Skaftdelen 48 har en udvendig diameter, som er indrettet til at gå fri af hullet 13, når tappen 12 indsættes i den lukkede dokumentholder, og at passe i en tæt glidepasning med hullet 14. Længden af skaftdelen vælges på en sådan måde, at når 20 den gevindskærende del 46 træder ind i den forsænkede boring 32, ligger den frie ende af skaftdelen inde i hullet 14 med et stykke, som er tilstrækkeligt til at tvinge tappen 12 til en stilling vinkelret på begge vægdele af dokumentholderen. På det stadium, hvor tappen 12 er helt indsat i vægdelen 4, vil den frie ende af skaftdelen 48 enten 25 flugte med eller ligge i afstand fra den ydre overflade 40 af vægdelen 6.The recoil cutting portion 46 is followed by a shaft portion 48 ending at a rounded free end. The shaft portion 48 has an outside diameter which is adapted to disengage from the hole 13 when the pin 12 is inserted into the closed document holder and to fit into a tight sliding fit with the hole 14. The length of the shaft portion is selected such that when 20 When the threaded portion 46 enters the recessed bore 32, the free end of the shaft portion lies within the hole 14 with a piece sufficient to force the pin 12 into a position perpendicular to both wall portions of the document holder. At the stage where the pin 12 is fully inserted into the wall portion 4, the free end of the shaft portion 48 will either align with or distance from the outer surface 40 of the wall portion 6.

I en foretrukken udførelsesform er dokumentholderen støbt af polypropylen, f.eks. et talkumfyldt polypropylenmateriale med et bøj-ningselasticitetsmodul i området 3-6,5 x 10 . Tappene kan være støbt 30 af nylon, f.eks. af et glasfyldt nylonmateriale med et bøjningselasti-citetsmodul af størrelsesordenen 13 x 10 . De førnævnte moduler definerer egenskaberne af det støbte formstofmateriale i hvert tilfælde med mulighed for formning og materialestrømning i kold tilstand. Tappene af glasfyldt nylon, som er støbt af et stærkere formstofmateri-35 ale end dokumentholderen har et højere bøjningselasticitetsmodul.In a preferred embodiment, the document holder is molded from polypropylene, e.g. a talc-filled polypropylene material having a flexural elastic modulus in the range of 3-6.5 x 10.. The pins may be molded of nylon, e.g. of a glass-filled nylon material with a flexural elastic modulus of the order of 13 x 10. The aforementioned modules define the properties of the molded plastic material in each case with the possibility of forming and flow of cold material. The glass-filled nylon pins, which are molded from a stronger plastic material than the document holder, have a higher flexural modulus.

Ved brugen undersøges de arkforraede materialer, som skal anbringes i dokumentholderen, til bestemmelse af stillingen af deres huller. Hvis holderen skal bruges for første gang til en bestemt afstand mellem hullerne i dokumenterne, indsættes tappene 12 i de rigtige hul-40 ler 13, som udvælges, så at de flugter med hullerne i de arkformede materialer, som skal fastholdes i den lukkede dokumentholder. BrugerenIn use, the sheet-lined materials to be placed in the document holder are examined to determine the position of their holes. If the holder is to be used for the first time at a certain distance between the holes in the documents, the tabs 12 are inserted into the appropriate holes 13 which are selected so that they align with the holes in the sheet-like materials to be retained in the closed document holder. The user

5 DK 152838 BDK 152838 B

som indsætter tappene, ledes til at begynde med af den forsænkede boring 32. Derefter sikrer indsætningen af den frie skaftdel i hullet 14 tilligemed virkningen af den forsænkede boring 32, at tappen anbringes vinkelret på vægdelen 4, og at den efterfølgende gevindskæ-5 ringsoperation udføres med tappen i den nævnte stilling.initially inserting the pins is guided initially by the recessed bore 32. Then, the insertion of the free shaft portion into the hole 14 together with the effect of the recessed bore 32 ensures that the pin is placed perpendicular to the wall portion 4 and the subsequent thread cutting operation is performed. with the pin in said position.

Under drivning med en almindelig skruetrækker i slidsen 44 skærer delen 46 (hvis bøjningselasticitetsmodul er større end for dokumentholderen) da et gevind i den indre overflade af hullet 13« Virkningen fortsætter, indtil undersiden 43 af hovedet 42 ligger sikkert 10 an mod skulderen 36 i den forsænkede boring 30. Kontakten mellem overfladerne 43 og 36 sikrer yderligere, at når tappen 12 er helt indsat, vil delen 48 stikke frem fra den fortykkede del 42 under en ret vinkel i forhold til vægdelen 4.During operation with a conventional screwdriver in the slot 44, the part 46 (whose bending elastic modulus is larger than that of the document holder) cuts as a thread in the inner surface of the hole 13 «The action continues until the underside 43 of the head 42 is securely 10 against the shoulder 36 in it. recessed bore 30. The contact between the surfaces 43 and 36 further ensures that when the pin 12 is fully inserted, the portion 48 will project from the thickened portion 42 at a right angle to the wall portion 4.

Når tappen 12 er fastskruet i vægdelen 4, frembyder den samme 15 stivhed og styrke som én i fast forbindelse dermed anbragt tap, medens den beholder muligheden for hurtig fjernelse til optagelse af andre typer af dokumenter. Hvis således dokumentholderen skal benyttes til dokumenter med en anden hulafstand, kan en eller flere af tappene 12 tages ud af deres respektive huller 13 ved udskruning. De udtagne 20 tappe er parate til brug igen til skæring af gevind i andre huller, som svarer til den nye hulafstand i dokumenterne. På et senere tidspunkt, hvor man ønsker at bruge den oprindelige hulafstand, kan tappene atter bruges, idet de skrues ind i de allerede med gevind forsynede huller 13.When the pin 12 is screwed into the wall portion 4, the same 15 provides stiffness and strength as one fixed pin thus attached, while retaining the possibility of rapid removal for receiving other types of documents. Thus, if the document holder is to be used for documents with a different hole spacing, one or more of the pins 12 can be removed from their respective holes 13 by screwing out. The 20 pins removed are ready for use again for cutting threads in other holes, which corresponds to the new hole spacing in the documents. At a later stage when one wants to use the original hole spacing, the pins can be re-used as they are screwed into the already threaded holes 13.

25 Med tappene 12 anbragt i stilling i vægdelen 4 kan dokumenterne indsættes eller udtages af brugeren ved åbning af dokumentholderen.25 With the tabs 12 positioned in the wall portion 4, the documents can be inserted or removed by the user upon opening the document holder.

Som nævnt ovenfor sker dette ved, at man skubber knapperne 16 til den ene side til oplåsning af de to vægdele fra hinanden. Efter at de ønskede dokumenter er indføjet på eller fjernet fra tappene 12, luk-30 kes dokumentholderen som vist i fig. 4. Det vil ses, at den forsænkede åbning 38 tjener til styring af den frie ende af skaftdelen 48 (vist med stiplede linier i fig. 4), idet vægdelen 6 svinger til højre, når dokumentholderen lukkes.As mentioned above, this is done by pushing the buttons 16 to one side to unlock the two wall parts from each other. After the desired documents have been inserted or removed from the pins 12, the document holder is closed as shown in FIG. 4. It will be seen that the recessed opening 38 serves to control the free end of the shaft portion 48 (shown in dotted lines in Fig. 4), with the wall portion 6 pivoting to the right as the document holder is closed.

Den foreliggende opfindelse udgør et vigtigt fremskridt i tek-35 nikken, idet den tilvejebringer en dokumentholder for arkformet materiale tillige med hidtil ukendte gevindskærende tappe, hvilke dele begge kan fremstilles let og økonomisk ved kendt støbeteknik eller på lignende måde. Opfindelsen løser således mange af den kendte tekniks problemer, hvor man savner den fornødne alsidighed eller den fornødne 40 stivhed og styrke, som sikrer, at tappene står vinkelret på dokumentholderen, eller hvor man ikke opnår fornøden lethed og økonomi vedThe present invention represents an important advance in the art in that it provides a document holder for sheet-shaped material as well as novel thread-cutting pins, both of which can be easily and economically produced by known casting techniques or the like. The invention thus solves many of the prior art problems where one lacks the necessary versatility or the necessary rigidity and strength which ensures that the pins are perpendicular to the document holder or where the necessary ease and economy are not achieved by

Claims

A plastic document holder of the type intended to form an elongate channel for receiving sheet-shaped materials, comprising a first and second channel wall portion disposed opposite each other comprising 5 and 5 holes respectively, forming pairs of holes over the length of the channel for recording. of a plurality of removable longitudinal spigots disposed to engage selected pairs of holes to provide a connection across the duct, the spigots further being adapted to support a plurality of sheet-like materials during engagement by means of similarly, holes are positioned near one edge of each sheet where the pins by a threaded joint engage holes in a wall portion and guided in the opposite wall portion, characterized in that the pin (12) has at one end a head ( 42) for engaging a drive tool, a threaded portion (46) thereof, adapted to screw a thread into a hole of a roller by screwing in A hollow pair and a threaded portion (48) connected to the threaded portion having a uniform outer diameter, which in the screwed-in position of the pin is accommodated in the opposite hole of the hollow pair, whereby the pin is removably inserted into the hollow pair after screwing.

Document holder according to claim 1, characterized in that each tab (12) consists of plastic with a bending elasticity module which is larger than the corresponding size of the document holder.

Document holder according to claim 2, characterized in that the diameter of the pin head (42) exceeds the diameter of the threaded part (46) and the first hole (13) 30 which receives the holder (12) comprises a recessed bore (30). at the outer surface (34) of the first wall portion (4) sized to receive the head (42) therein, while the underside (43) of the head is arranged to engage the shoulder (36) on the recessed bore (30) for position fixing of the fully inserted tab (12) perpendicular to the first wall portion (4). DK 152838B

Document holder according to claim 3, characterized in that the shaft portion (48) ends at a free end and the first hole (13) comprises a second recessed bore (32) disposed below the first recessed bore (30) and less deep than this, and that the second recessed bore (32) has an inner diameter which slightly exceeds the larger diameter of the threaded threaded portion (46) and that the length of the shaft portion (48) is selected in such a manner; that the free end is located in the second hole (14) in the 10 channel-shaped document holder at the start of threading in the first hole (13) for guiding the pin in a direction perpendicular to the first wall portion (4).

Document holder according to claim 2, characterized in that the pin is made of nylon.

Document holder according to claim 2, characterized in that the document holder is made of polypropylene.

Document head according to claim 2, characterized in that the pin is of nylon and the document holder is of polypropylene.

Document holder according to claim 1, characterized in that the second hole (14) has a diameter adapted to receive the shaft part (48) with a sliding fit.

Document holder according to claim 1, characterized in that each of the holes (13,14) extends through a thickened part (22,26) formed on the inner surface (24,28) of the corresponding wall part (4.6 ), each such extended hole (13) thus exceeding the axial length of the threaded portion (46) and each extended second hole (14) comprising a larger end opening (38) facing the opposite first hole (30) ( 13) and is arranged to control the free end of a penetrating pin in the second hole.