DE1436706A1 - Document holder - Google Patents

Description

R, POSCHENRIEDIiR

DIt E fiorriTNER f I, Jan. 1SS9

DIPL-IKC. H.-J. MÜLLER

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β MUNCUBN so ρ 14 36 706.7 ^l

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Teleion 443755 ^V * "

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Pres-to-Line Corporation of America 22 West 26th Street, Hew York 10, Hew York, (V.St.A.)

Scripture light age

The invention relates to an 8ohriftetUoke holder or a SohriftetUoke holding head and an electrically operated further switching device which moves the clamped documents further by a selectable line spacing. Per-like document holders are accessories of a typewriter, data processing machine, buohungsasachine or the like.

Such a sohrift statue age is already known, in which the holding head is an orphan and a pressure device sun andrttoken the writing piece on the roller wearing. Me further holding device serves as a roller drive and has a Toothed clutch wheel on, one with in deeeen teeth a drive pawl connected to an electric drive can be engaged »The drive pawl is activated by a An anchor of a tin-plated steel driven, which acts as a train » magnet is formed. It is known that the

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Drive pawl both directly with the anchor too connect, as well as to construct as cross arms of a lever designed and supported anchor, leraer This is the case with hand-operated additional holding devices known to use adjustable stops that the So far, you have limited the shifting step of elements that are in puncture connection with the drive mechanism well-known Sohriftstttokehalter and Weiterohaltvorriohtungen of this type are relatively bulky and therefore also relatively susceptible to failure. the switching ear of the drive pawl to be able to easily determine. The use of additional reading devices means an additional effort that increases the space required by such devices.

The invention is based on the object of avoiding these disadvantageous parts in a simple manner. It should be possible to switch the Sohriftstickeholder with simple means and function reliably. In this case, the indexing device should have a small footprint and be designed to be compact. In addition, the set Sohaltsohritt should be easy to read "without that bulky reading devices must be used · od The compact design of such units ^ on Sohreib-, Buohungs-, calculating machines. Etc.," has long been sought.

The invention consists in the union of different Features, these are it

a) A! rotary magnet is used as the electric drive?

b) the switching step of the drive pawl is through a limit stop that is in the way of

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The drive pawl is located and can be adjusted concentrically to the coupling wheel;

o) the switching step setting is carried out via a from Holding head carried screw drive, which consists of a sleeve nut rotatably connected to the holding head and a screw spindle that can be screwed into it ZeilanaorfcLerung exists and via a crank drive adjusts the stop carrier forming the stop.

This combination of features according to the invention leads to a very compact device with little space requirement, in which the individual movable parts only have to cover a relatively short distance and thus not only respond reliably, but are also only exposed to relatively little wear and tear. S ¹ The line marking of the screw spindle is used for reading, so that no additional reading devices are used.

It is particularly useful to have the stop carrier, the coupling wheel and the crank drive on a common Arrange shaft, as this means that several drive shafts can be separated.

In a further development of the invention, the crank drive consists of a slotted disc, in the slot of which engages with the screw spindle connected pin. It is advisable that the stop support is used as a cup is formed, the dumbbell is partially broken, so that the drive pawl in this recess their shift clu-rti; executes and the ends of this

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Opening serve as stops · The coupling wheel is then arranged inside the cup.

It is particularly advantageous to provide the clutch wheel with a hub around which a pawl carrier can be rotated is, of which one arm is hinged to the drive pawl via a pin. This moves the drive pawl out of the toothed engagement position of the clutch wheel picked up.

For the application of the document holder according to the invention it is advantageous if the holding head is hinged to a frame so that it can be tilted concentrically around the roller shaft is. The tiltable holding head is mounted on swivel bearings within which the roller shaft is supported » An advantage of this design is that any imbalance of forces on opposite Sides of the holding head is not transferred to the roller shaft and no jamming due to twisting occurs that the rotary movement of the roller shaft, in particular the port indexing rotation, by the indexing rotation could disturb. Another advantage is that the angular adjustment of the tiltable holding head the position of the roller shaft and the distance between the parts of the document in the reading position not changed in relation to eye level of the person writing. Previously had in document holder no angle-adjustable holding head with radial arms that separates the actual roller shaft from the axis of the holding head. The consequence of this was an imbalance of forces on opposite sides Sides of the tilting head construction that extends over the

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Radial arms became effective and exerted a clamping effect on the roller shaft due to twisting forces. The rotatability of the roller shaft during the holding step was therefore impaired * In addition, the change in the angular position of the holding head was the Walaenwelle shifted and the distance of the operator from the line of the reading position Document sheet was changed, and this required A constant correction of the support device for the head construction in order to restore the perfect eye relief when reading. These difficulties are disabled by the present invention.

The Sohriftatüdkdialter is often with an electric Typewriter or other electrical processing maaohine. Used for data. According to the invention, it is provided that the associated machine has electrical energy through the sohriftstUciäualter to supply, with a switch for switching on and off the power supply and with a signal signal is equipped only for the switch-on state. Of the The switch and the signal light are not only used for the subordinate electrical data base, but also above it .hinfiu as an electrical circuit for the Sohrift stU & lalter himself.

The features described above as well as other features, Aufellben and advantages of the invention emerge from the following description.

On the reward, a preferred embodiment is the Invention shown by way of example * Therein are ι

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Figure 1 is a schematic front view of the Sohrift etüdiehalterers according to the invention, which is also used for visualization the circuit arrangement of the document holder serves,

Figure 2 is a view of the Sohriftstüdoehalters from above,

Figure 3 is a front view of the font st üdcehal tare from right showing the outline of a typical typewriter for use in association with the Sohriftstüctafaalter in dash-dotted outline lines,

FIG. 3a shows a partial section along the line 3a - 3a in FIG Figure 2,

Figure 4 is an exploded view of the line switch

Figure 5 is a partially sohnete front view of the Coupling arrangement of the line switching device,

FIG. 6 a section along the line 6 - 6 in FIG. 2,

FIG. 6a shows a cable section along the line 6a-6a in FIG. 6 ₉

FIG. 7 shows a section along the line 7-7 in FIG and

FIG. 8 is a partial view of the degesstan in FIG. 7 from the right.

U36706

For illustration purposes, the display age is in Figure 2 in the working position behind a typewriter a chine V / on a table top 3? shown arranged. The frame of the document holder has a horizontal one Base plate 10 with upwardly curved edges 10a (see also Figure 1). The base plate 10 rests on the table top, and the typewriter sits on the base plate and holds the pen holder by its weight in his working position. Between the j

A rod 11 is attached to the sides 10a of the base plate, from which two upright seats 12 rise rigidly. These supports are from matching sleeves 1? surrounded, which are locked in loops in the rear part of a TJ-shaped, cantilevered frame 14 which has forwardly projecting side frame arms Hb and 14c (see also Figure 2). The frame 14 can be adjusted in height along the supports 12 and can be locked in the set position by means of locking screws 15 which are screwed into the widened lower ends of the sleeves 13. A guide plate 16 for a document sheet (document) D which can be inserted into the document holder is rigidly attached to the front of the widened sleeve ends. At the { rear part 14 a of the frame 14, an electric switch rack 17 for the document holder is attached in a suitable manner.

The head of the document holder is carried above the typewriter by the front ends of the frame arms 14b and 14c The head of the document holder has a roller shaft 18 which is mounted in the inner bearing surfaces of two bearing bushes 19 with a head, which are supported by the frame arms 14 £ and 14c are worn. The sockets

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have shafts with Auesen thread that pass through the front openings in the frame arms, and edge surfaces in the direction of the chord on the openings and shafts (see Figure 6a) prevent rotation of the bushings 19 in relation to the bearing arms.Each bushing has an outer smooth bearing surface between its Head and the thread. On the lower bearing surfaces of the two sockets 19, an angle-adjustable, tiltable head structure is pivotably mounted with the aid of rigidly connected left and right side members 20 and 21 of the tiltable head structure. Each of these side links is provided with washers 22 attached on both sides. The protruding thread ends of the bushes 19 receive the retaining nuts 23, which are tightened tightly in order to generate sufficient frictional pressure of the washers 22 against the side parts 20 and 21 to prevent undesired tilting of the head structure. It should be noted that tightening the nuts 23 can create unequal lateral pressures on the opposing side members 20 and 21 of the tilting head structure.Sin such imbalance of forces, or any forces tending to twist the tilting head structure, will be exerted by the received in the frame fixed bushings 19 and not transferred to the roller shaft 18 'and therefore do not cause any clamping effect on the roller shaft 18 as a result of twisting, so that the rotational movement of the roller shaft 18 is in no way hindered.

The right side member 21 of the tiltable gcfpfkon * structure is also the right side wall of the structure

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housing 25 for filing the line switch · The left side part 20 is a backwards and forwards at an angle bent arm of a front plate 26, which Bloh extends transversely across the script and at the front of the housing 25 is firmly attached (Figures 3, 3a and 6), which is carried between the side parts and 21 eohwenbar · you projecting ends of the rod 27 carry the arms 28a of a Dcuokwalzentragbügele 28 · to the transverse web of the rigid catfish Brackets are hinged holder 29 for pressure rollers 30, and these holders are spring-loaded in a known manner, so that they the pressure rollers 30 against the for Press transport of the SohrlftstUoke serving rollers 31, which are attached to the roller shaft 18 and through openings in the Yorder plate 26 protrude

A helical spring 32 is wrapped around the rod 27, and one end of this spring is on a ring 33 (Figure 6) hooked, which is attached to the rod 1st.Bas other index of the spring is hooked on an arm 34-, which protrudes behind the Walsen shaft 18 and has a hat 35 freely arranged on the rod 27 · On the A ring 36 is attached to the rod, which extends the lateral Movement of the labe 35 and your arm 34 is limited. she Force of the spring 32 strives to move the arm 34 counterclockwise Bua braking attack on the rear side of the roller shaft (Figure 3a) to prevent it from being twisted too far if the Ztilenechaltvorriohtung continues to hold it by one rope distance. The spring 32 is loaded also the rod 27 and the bracket 28 attached to it

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clockwise to adjust the pressure rollers 30 in the for the To maintain cooperation with the rollers 31 suitable position. A boundary division for the bracket 28 in the clockwise direction is determined by the abutment of tongues 28b of the bracket arms 28a on the front side of the housing 25 and the front side of the front plate 26. You finger grips 28o of the bracket arms 28a can be grasped to move the bracket 28 downwards in a counterclockwise direction Insertion of a document between the pressure rollers and to facilitate the rollers 31 · The document is placed in front of the front panel, over the guide panel guided under the document holder head and can then be articulated above the front panel by means of one of the side parts 20 and 21 of the tiltable head construction SrahtfUhrungsbügela 37 are guided above the front panel. A ruler carried by the bracket 28 marks the reading position for a text or number line of the document. For lighting dee Document is hinged to the bracket arms 28a and a fluorescent lamp 39 with a switch 39a locked in position by wing nuts 40.

To rotate the roller shaft 18, a specially designed and operated line switching device is used according to the invention, through which the document moves upwards and the next line is in the reading position is brought. A finely toothed clutch wheel 42 (Fig. 4 »5» 7 and 8), which consists of one piece with two grooves 42a, 42b and is tightly fitted on the whale shaft 16. The Iab <m jump on both sides of the clutch wheel 42, and the hat 42a is on the left side

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in the meanwhile a little larger than the hub 42b on the right side. The clutch wheel 42 is in position on the roller shaft 16 by a set screw 43 mounted in the housing 42a. A pawl carrier 44 is located on the hat 42b rotatably Kontiert, which has an arm 44a, the .in pivotally carries a drive pawl 45 for the clutch wheel 42

crimped over in order to prevent the drive pawl 45 from loosening. As known, the teeth on the door edge of the drive pawl 45 are the distance between the teeth on the clutch wheel adapted and arranged such that the drive pawl 45 grips the clutch wheel 42 when first clockwise (Fig. 7) with respect to the The pawl carrier 44 is pivoted, and is released from the clutch wheel 42 when pivoted in the opposite direction. To the drive pawl 45 The rotary movement is to pivot with respect to the pawl carrier 44 before each forward and backward stroke of the drive pawl 45 and the pawl carrier 44 The pawl carrier 44 is retarded by frictional action in that it is clamped between one side of the clutch wheel 42 and a flat washer 47 which has a sufficiently small outer diameter that it does not reach as far as the pivot pin 46 of the drive pawl 45. The clamping pressure is by a plate spring 48 between the Washer 47 and a horseshoe-shaped retaining clip 49 generated in a hat of hat 42b of the clutch wheel 42 is used. The rear end of the drive pawl 45 carries a pivot

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tenon 50 with a head that is between his head and the thread has a smooth portion which to insert into a looh at the lower end of a tab 51 serves. The pin 50 had a Bndabsohnitt 50a, which is offset in diameter and which is attached to a shoulder 44b the pawl carrier 44 is applied and so the backward movement or pivoting of the drive pawl 45 in the Oegenuhreeigereinn in relation to the pawl carrier 44 betarenet * Bas upper snee of Laeotoa 51 is on one pivotable armature plate 52 of an electromagnet with a movable armature, i.e. a rotary magnet 52 hinged, which has a spring (not shown) for loading the anchor counterclockwise (Ft «. 9 and 7) in the boom position contains * The magnetic coil is mounted in the housing 25 and on the left side wall 25a of the housing 25 screwed on by means of screws 54, one of which is shown in FIG.

The housing 95 contains a below the rotary magnet 55 Cup-shaped member 56 having an externally threaded hub 56a which fits onto the roller shaft * 18 is loosely fitted and a nut 57 for clamping the cup-shaped member 56 to the left side wall 25a of the housing 25 receives the cup-shaped member encloses the coupling parts, but is its flange 56b is interrupted by an opening through which the arm 44a and the drive pawl 45 are obstructed. The flange opening has an extension in the circumferential direction is at least equal to the greatest stroke length of the drive pawl 45 and the pawl carrier 44

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The open or reverse position of the drive pawl and of the pawl carrier 44 let by the impact of its arm 4% on a rear blunted one Sende 56o of the opening in flansoh 56a of the beoberföraigen Link 56 · The drive stroke of the drive pawl 45 and of the pawl carrier 44 for the clutch wheel 42 In the The forward direction is set in an adjustable manner duroh the linetallung of one serving as a sole support Beohers 58, which faces the cup-shaped member 56 and whose lift on the roller shaft 18 is loosely fitted. The edge of the Beohers 58 is in a rotatable catfish added to ileneoh 56b of Oliedes 56 and has one Opening which in the circumferential direction has an extension which is at the same time the same as that of the opening la Vlanaoh 56b. At its front end is the opening in the edge of the Beohers 58 sit a stop 58a is provided in the Track of the drive pawl 45 above the 8ohwenkisapfen * the same is arranged. During the forward stroke the Drive pawl 45 and the pawl carrier 44, the drive pawl 45 strikes the stop 58a and is in eye on the pawl carrier 44 so swiveled to the rear that it loosens from the clutch wheel 42 Forward stroke of the drive pawl 45 and the pawl carrier 44 is ended when the era 44a also hits the sole «58 *.

According to the invention, a mkrometereinriohtung is also provided to display the Beohers 58 by turning atecks selection of the Beilenabetandee. This linatelleinriohtunf "" is a araartige ßoheibe 59 purchase ₉ on the end face it "Beohere 58 is attached and a pin duroh * and old Bohlitiverbindunf the lower invited · a screw spindle connected 1st · · Dl 8ohreubemspindel 60

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is screwed into a sleeve nut 61 which is rotatably held in the housing 25 in a suitable manner. the rotatable attachment for the sleeve nut 61 can be done, for example, that this with an -ring-shaped hat 61a for receiving a suitable shaped edge of the horizontally bent upper flange of the housing wall 21 is provided. The rotatable Attachment can be improved by providing the hat 61a with a lining above the housing a button 62 is attached to the sleeve nut 61, with whose help the sleeve router 61 is twisted in such a way that that the screw spindle 60 through in the longitudinal direction the disc 59 is adjustable and the rotated position of the Beohers 58 according to the desired number of lines turns off. The upper length of the screw spindle 60 is cut out into a flat surface on which a scale is attached as a line marking 63, which extends through the sleeve nut 61 and button 62 extends therethrough and beyond. The line marker 63 has a rope for the line spacing, and the top edge of the button 62 indicates the set line item.

When the rotary magnet 53 is excited in a manner still to be explained, the armature plate 52 is pivoted clockwise and first moves via the bracket 51 the drive pawl. 45 with respect to the pawl carrier 44 sun attack on the clutch wheel 42, whereupon the Anchor plate 52 moves the drive pawl 45 together with the pawl carrier 44 in such a way that they drive the clutch wheel 42 until the drive pawl 45 aa stops 58a of the adjustable handle 58 strikes. This h * t sur AaS the drive mechanism 45 in btaug on the left

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carrier 44 is moved in such a direction that β ie ait dea Eupplungsrad 42 comes out of singriff, while eioh the The pawl carrier 44 is moved on until it also reaches the stop 58a and the forward stroke of the anchor plate 52, the drive pawl 45 and the pawl carrier 44 is terminated. When the solenoid is de-energized, you return Anchor in a turn in the Gtegenubreeigereinn back and brings the drive pawl 45 and the pawl carrier 44 into the Auegansstellung eurüok, in which the arm 44a dea fixed stop 56o is applied.

In the manner described, the rotary magnet 53 switches the roller rollers 18 by one with each excitation pulse Line stop step or cell step next. The reels shaft 18 has the usual handle heads 65, with which it τοη the operator by hand ▼ can be rotated.

As Figure 1 shows, the energy for the electrical circuits of the document holder is taken from a socket (mains voltage, e.g. 220 T alternating current) by connecting a lead 67 Bn anchored to the bottom of the desk holder 17 of the 8ohriftstUc3tehalters. The bottom of the socket also has a socket 68 to which the supply line of a fingerprint button socket 69 is attached, which can be attached to the side of a typewriter or other main unit. Instead, a foot switch 70 can be connected to the steering box 68.

The reohte side wall of the 8ohränkohens 17 carries a Socket 66 but accommodates the plug of a supply cord 72 for an electric typewriter or a

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other electrical main machine, so that the electrical main machine through the writing & old electrical Energy can be supplied «Bas cabinet also contains the accessories 73 for the fluorescent Lamp 39 · For the supply of the rotating magnet 53 with Direct current are a rectifier 74 and a capacitor C mounted in the cabinet · The energy for the circuits in the writer and for the Circuits emanating from this can be switched manually using a sliding contact switch 75 is actuated »which is mounted on the right side wall 21 of the housing 25 (see also FIG. 3). Likewise A signal lamp is visible in the housing 25 through an opening in the front side of the housing 76, preferably a neon lamp, which indicates to the observer that the power supply is switched on is. By switching on the sliding contact so holder 75 is a circuit from one side of the supply line to the connected line w1, from there via a fuse f to a line like that runs through a cable 77, to a terminal of the switch 75 and from there through the switch to a connection point ρ closed. From there the circuit is branched, one branch leads through a resistor r and the signal lamp 76 to a line w2, which leads through the cable 77 to the other side of the supply line »

The supply of energy to the accessory 73 of the fluorescent lamp takes place via the switch 75 · an input terminal of the accessory 73 is connected to the line w2, and the other input terminal is connected to a line w3, which leads via the cable 77 to the connection point ρ.

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The Steokdosenklemaen 66 are also on the lines w2 and w3 connected, so that energy for the main electrical machine, which is connected to the socket 66, is connected is, the main engine is only fed »when the switch is turned on · The Xatsaohe that the energy supply for the main machine and the circuit of the document holder is switched on, is indicated by the signal lamp 76 *

When the so holder 75 is turned on, the rotary solenoid 53 is for operation by the push switch 63 or the foot switch 70, depending on which one is connected to the socket 68, ready for operation. As shown, the push button switch is on, and if the operator momentarily turns this switch on, becomes a circuit from one side of the supply line via the line w2 to one terminal of the socket 68 and closed by the push button switch to the other terminal of the socket. The circuit is blocked there via a line w4 through the rectifier 74 the line contained in the cable w4a and from there via the magnet wile to the connection point ρ, from where the Circuit through switch 75, the wire like that Fuse f and the line w1 to the other side of the supply line is closed. The capacitor C is a GKL & ttungskondensator, which between the lines w3 and w4a is connected to the magnet coil in the footprint.

- patent claims -

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Claims (1)

Claims ^ yffl. ^ · Document holder with a document holder head and an electrically actuated further holding device which holds the clamped documents around a selectable line spacing moved further, as an accessory of a typewriter, data processing nasohine or the like., in which the holding head an orphan and a pressure device for pressing the document against the roller carries and in which the holding device is used to drive the roller and a connected to the roller shaft, having toothed clutch wheel, in whose teeth a drive pawl connected to an electric drive is latchable, characterized in that a rotary magnet (53) serves as the electric drive, that the switching step of the drive pawl (45) can be limited by a stop (58a) located in the path of the drive pawl and adjustable concentrically to the coupling wheel (42) and that the holding step adjustment takes place via a screw drive (60 to 62) carried by the holding head, the consists of a sleeve nut (61) rotatably connected to the holding head and a screw spindle (60) with line marking (63) that can be screwed into it and above a crank drive (59) adjusts the stop bracket (58) forming the anchor bracket 2 «writings he holds according to one of the preceding claims, characterized in that the sole support (58), the clutch wheel (42) and the crank mechanism (59) are arranged on a common shaft (18) « 909843 / Q354 - 19 - U36706 3 · Sohriftstüokehalter according to claim 2, characterized in * that the crank mechanism consists of a slotted disc (59), in the slot with a Engaged pin connected to the screw spindle (60) 4 · Document age according to claim 2 or 3 »thereby characterized in that the stop support consists of a cup (58), the jacket of which is partially perforated, so that the drive pawl (45) $ n this recess executed its switching step, which is from a stop serving recess limitation (58a) is limited, and that the coupling wheel (42) is arranged in the cup (58) is. 5 · Document holder according to claim 4 »characterized in that that the clutch wheel (42) has a boss (42b) around which a pawl carrier (44) is rotatable, of one arm (44a) via a pin (46) on the drive pawl (45) is hinged in order to lift it out of the tooth engagement position from the clutch wheel (42) « 6. Document holder according to one of the preceding claims, characterized in that the holding head is hinged to a frame (14) so that it can be tilted concentrically around the roller shaft (18). ο Document holder according to claim 6, characterized in that the frame has spaced apart frame arms (14b, 14c) with sockets (19) arranged thereon in a rotationally fixed manner, in which the roller shaft (18) is mounted and its outer support surfaces as rotary bearings for the tiltable holding head to serve. 909843/0354