US2177885A - Machine for composing lithographic prints - Google Patents

Description

Oct. 31, 1939. R. L, R. GEiRNAERT MACHINE FOR COMPOSING LITHOGRAPHIC PRINTS File d Nov. 21, 19:56

3 Sheets-Sheet l Oct. 31, 1939. R. L. R. R. GEIRNAERT MACHINE FOR COMPOSING LITHOGRAPHIC PRINTS Filed NOV. 21, 1936 3 Sheets-Sheet 2 9 mmm mum Patented Oct. 31, 1939 UNITED STATES- MACHINE FOR COMPOSING LITHOGRAPEIO PRINTS Ren Louis Romain Robert Geirnaert, Brussels, Belgium Application November 21, 1938, Serial No. 112,021

Germany December 3, 1935 6 Claims. ((1191-84) This invention relates to a machine for composing lithographic prints by direct grease printing on a transfer paper and more particularly relates to mechanism for obtaining justiflcation, that is to say, adjustment of line to a predetermined length.

The invention is applicable to any machine having proportional spacing movement, that is to say, mechanism which will permit within predetermined limits a spacing movement of infinitely variable dimension. For that reason the invention is par.lcularly applicable to the invention forming the subject of my co-pending application for patent, Serial No. 112,020 and may be incorporated therewith. I

It is an object of this invention to adjust the spacing between subsequent words of a typescript line to justify or even the line by subdividing the total spacing width into equal spacing units and toinsert widths according to these units between each two subsequent words of the line.

It is a further object of this invention to utilme the width of space dividing elements of adjust- 5 able width to effect the subdivision of the total spacing, these elements being brought into a spacing chamber from a magazine in a number corresponding to the number of spacings required.

It is,a still further object of the invention to feel, store and transfer the width of these spacing units and to transfer them to the escapement of the machine carriage and to control its movement so that equal spacing units will be inserted between each two subsequent words when the line is being written, thus justifying or evening the line.

Other objects of the invention may be seen from the following description and the appertaining drawings.

In the drawings afilxed hereto and forming part of the specification, the invention is illustrated by way of example. It will be readily understood, however, that my invention is not limited to this example and that my invention may be embodied in other forms without departing from the principle underlying my invention and from the ambit of my appended claims.

In the drawings:

0 Fig. 1 is a perspective front view of a typewriter according to this invention,

Fig. 2 is a perspective rear view of this typewriter,

Fig. 3 is a sectional elevation of a space subdividing blade magazine,

Fig. 4 is a view, on an enlarged scale, of the blade magazine and of the conveying means for conveying the blades from the blade magazine unit,

Fig. 12 is a front view of a scale used for de- 15 termining the subdivision of the total spacing width,

Fig. 13 is a perspective view on an enlarged scale of the cams controlling the movement of the conveyer means shown in Fig. 4. 20

II is the base of a'typewriter provided with keys 4, types 5, a carriage 6, the elements, mechanisms or drives of which, in so far as they are not concerned with this invention, are of any convenient or known construction andthus are 25 not shown in detail on the drawings.

I83, I83 are wedge-shaped blades which, as later on will be described in detail, are the governing means for evenly subdividing the total of the word spacing of a type-script line which 30 line is to be justified, or rendered even, by properly spacing the words.

The blades are arranged in two tiers, one up per tier of blades I83 and one lower tier of blades I83. The blades are arranged for co-operation 35 in pairs (Figs. '7 to 11), and the blades of each pair may be displaced, one blade in relation to the other, by sliding them on their inclined wedge-shaped surfaces; .thus varying the width of each blade pair and adapting the total width 40 of the blade pairs to specific purposes, as will be set forthlater on. I a

The blades I83 and I83, by means of flanges 283 and 283 respectively, which flanges protrude from their edges opposite to their wedge-shaped 5 surfaces may be slid within grooves 284, 284' respectively, of an upper (I84) and a lower (I84') jaw-like wall structure, both structures thus defining a storage chamber or magazine from which the blades may be moved to a spac- 50 ing chamber adjoining the magazine and which spacing chamber is likewise formed by an upper (I96) and a lower (l96') jaw-like wall structure provided with grooves 296 and 296' respectively, Fig. 5, which correspond in shape and configuration to the grooves 284 and 284' and in which grooves the blades may be slid from one chamber to the other or vice-versa, as will be more fully described later on.

The spacing chamber (I98, I98) may be laterally confined by means of two hook-like shutters I16 and I11 which may be moved into and out of the spacing chamber. Shutter I11 is slidably mounted with its head 422 on a bar I18 and may be adjusted thereon by means of a set screw 218. Bar I18 is pivoted in two brackets I19 secured to frame bar 388 of the carriage 6 of the machine and may thus follow any tilting of shutter I11. Spring I88, which is extended between bar I18. and carriage bar 388, urges the lower edge of bar I18 against a stopI8I arranged at one of the brackets I19, and simultaneously urges shutter I11 out of the spacing chamber.

Shutter I16 is secured to a bar 216 which is slidably arranged within and traverses the machine and bears at its other or front end a pushbutton 235. Shutter I16 is further provided with a pin I82 which extends laterally and. is arranged opposite a nose 211 of shutter 111. When push-button 235 is pulled to the front (of the machine) pin I 82 engages nose 211 and both shutters I18 and I11 are moved simultaneously into the spacing chamber. Shutter I16 will lie between the entry side of spacing chamber I88, I98, and the exit of the magazine I84, I84, see Figs. 6, 10 and 11 and by means of its upperedge will bear against abutment I85 secured to the upper wall structure I84. Shutter I116 and bar 216 will be kept in this position by the friction with which bar 215 is mounted in the frame of the machine. When push-button 235 is pushed back, shutter I16 will be moved directly, and shutter I11 by means of spring I88, out of the spacing chamber.

A scale I12 is secured to the frame of the machine by means of a bracket I13. A pointer I15 co-operating with scale I12 15 carried by'a rail I1 1 secured to frame bar 380 of the carriage and may be adjusted as to its position relative to the carriage by displacing it within a slot 214 provided within the bar I14, for thus determining what right hand margin should remain on the paper on which the script is to be written.

Scale I12, as shown in Fig. 12, is provided with three graduations: a top graduation (212) which is made in Clceros (twelve point type); a medial graduation (312), the number of the marks of which corresponds to the total number of the blade pairs or spacing elements which may be stored within the magazine, e. g. twelve pairs, and the distance of which marks equals the width of the individual blade pairs in their undisplaced narrowest position (Fig. 7); and a base graduation (412) the number of the marks of which likewise corresponds to the' aforesaid blade pair number, and the distance of which marks equals the width of the individual'blade pairs in their utmost displaced, widest position, Fig. 11 showing an intermediate position.

Scale I12 may be used for an initial determination of the total word spacing width which is available for distribution among the interstices of the words which follow each other in a line to be Justified or evened.

For this purpose, a rough draft of the line is written by means of the machine, putting one word immediately after the preceding, leaving out the spaces. During this writing operation the pointer or index I15 will move together with the machine carriage to the left; and when the draft of the line has been finished, the pointer will show in the top scale the number of types in Ciceros, or the total spacing width which remains from the end of the text to the right hand margin of the line. The position of pointer I15 in relation to the other scales 312 and 412 shows whether or not the type script line may be appropriately filled with spaces. Let us assume, pointer I15, after the draft of the line had been written, has reached the position indicated at A in Fig. 12. As this position lies beyond scales 312 and 412, it may be seen that the line residue cannot be filled up with spaces how wide the .blade pairs I83, I83 might be expanded. Thus,

the line should contain, for instance, one or two words more. After having been modified correspondingly, the line may consist of ten words and the pointer I15 may now reach position B.

, This position in scale 312' corresponds to a line panded to fill the line residue or total spacing width, each blade pair after expansion defining the width of one space and the total spacing width being subdivided by the blade pairs into nine spaces of equal width.

The pointer thus shows on the scales when the,

number of blade pairs is smaller than that which is required, or when the blade pairs cannot be expanded to such an extent as to fill the required spacing and when thus the line must be split otherwise, for example, by taking one or more words from the line to the next line, or by adding one or more words to the line from the next line and/or by splitting aword, or splitting it otherwise than before, or the like, just as it is done with type-setting operations.

After this determination, the readingof pointer I 15 will be taken to bar I18, and shutter I11, by means of its head 422, is correspondingly set. For this purpose bar I18 is likewise provided with a scale, preferably graduated in Ciceros, a part of such scale being indicated at 318. By shifting the head 422 of shutter I11 along the scale and adjusting it in a position corresponding to the reading of pointer I15, the distance between shutter I11, which is movable together with the carrlage, and shutter I16, which is stationary in relation to the machine frame, may be set to equal the width of the total spacing which is required.

Upper and lower wall structures I84 and I84 respectively, are secured to the frame of the machine. Two brackets I 88 are provided at the lower structure close to outer ends of the chambers I84, I84 and I96, I98 respectively in which brackets a rod I81 is slidably arranged.

most blade pairs will always be pushed into a definite position within chamber I84-I84'. Secured to guide plate I88, by means of rod I89, is a second guide plate I98 of T-form which is arranged at the other side of the blade pairs and at a distance from plate I88 which is the sum of the total width of all but one of the unexpanded blade pairs and of the length of the stroke which pushes the foremost blade pair from chamber I84--I84' to chamber I96I96.

When blade pairs I83, I83 are pushed from the magazine I84, I84 into the spacing, chamber I96, I96 by means about to be described guide plate I88 will be taken along with said plate pairs, and in front of them, and, as may be seen from Figs. 1, 8 and 9, will cause the index I95 to move over its scale 29!) thus indicating the number of blade pairs which have been shifted into spacing chamber I96, I96. Pressing by hand index I95 to its zero position will, by means of its lever system cause guideplate I88 to shift the blade pairs from chamber I96, I96 back into chamber I84, I84, and simultaneously,'bring the blade pair which is in front and next to guide plate I88 into a definite position from which it may be brought into chamber I96, I96. Conversely, when the foremost blade pair is pushed from chamber I84-I84' to'chamber I96--I96,

it takes guide plate I88 along with it and in front of it, Figs. 7 and 8, whereas guide plate I98; follows and pushes the blade pairs remaining in chamber I84--I84 towards chamber I96, I96

8 to the extent that blade pairs have been. moved from chamber I84, I84 to chamber I96, I96; the foremost blade pair, facing chamber I96, I96 'of the set, thus is always brought into one definite position from which it may be pushed into the spacing chamber I96, I96.

The mechanism for pushing the blade pairs from chamber I84, I84 into chamber I96, I96 comprises two push levers I98, I99, arranged above and below chamber I84, which with their rake- like heads 298, 299 may enter apertures 398, 399 provided within the top structure I84 and base structure I84 of this chamber. The push levers are pivoted at 288 and 288 to a slide member 28I of T-form which is slidably arranged on a slide bar 282 mounted in brackets 283 which are secured to a stationary housing or wall structure 383 of the machine.

The slide member 28! is connected by means of link 2I8, crank arm 2, and rock shaft M2 to a key or operating lever 2E3, (Figs. 2 and 4) which key, by means of spring 2I4 (Fig. l), is urged into its uplifted position, thus holding, by means of linkage system 2I2, 2II, 2I8, slide member 28I in its rest or zero position shown in Figs. 2 and 4. Push levers I98, I99 are extended beyond their pivots and bear at their rear ends hubs or lugs 284, 384, provided with bores within which rods 285, 385 (Figs. 4 and 13) may slide. Fast to housing 383 are-two top cams 286, 281, and two base cams 288, 289 at both sides of push levers I98, I99 which with their lower cam surfaces co-operate, alternatingly at either side, with rods 285 and 385. Rods 285 and 385 are held by the weight of the front part of levers I98, I99 againstthe cams. When starting from the rest position, shown'in Figs. 4 and 13, rods 285 and 385 are contacting the front cams 281, 289 respectively.

When lever 2I3 is depressed and slide member 28I thus advanced to the left, Fig. 4, rod 285 will be on the lowermost part 58I, Fig. 13, of cam 281, whereas-rod 385 will be on the highermost machine frame.

3 part 581 of cam 289 Fig. 13 and the rake-like heads of push levers I98, I99, will be separated part 582 of cam 281 and the downward sloping part 588 of cam 289 respectively, the push lever head 298 willbe lowered and. the push lever head 299 will be raised and both heads will be moved through the chamber openings 398,399 (Fig. 4) and behind the foremost blade pair I83, I83 (Fig. 7), which had been positioned at the proper place in chamber I84, I84 by means of guide plate I88 when it had been pushed back by link I93 at its foregoing return stroke.

The blade pair is seized by push heads 298, 299, and pushed at the entrance of chamber I96, I96 (Fig. 8). push heads behind the positioned blade pair will be facilitated by means of indentations 383, 388" which are provided at the top edges of the blades (Figs. 6 and 7). The advancing blade pair I83, I83 takes along with it the guide plate I88 in front of, and by means of, the first blade pair I88, I83 and also the guide plate I98 which by means of rod I89 is movable with guide plate I88, whereas the blade pairs which are remaining in chamber I84, I84 are pushed by guide plate I98 and are advanced Figs. 8 and 9 thus bringing the next blade pair into that position from which it may be pushed by the push lever heads 298, 299 at their next operation.

When the advance movement of slide member 28I nears its end, rods 285 and 385 will reach the oblique surfaces 583-and 589 respectively of cams 281 and 289, Fig. 13, and thus be pushed to the rear, so that with the return stroke of slide member 28I, which is caused by spring 2I4,

rods 285 and 385 will be in co-operation with cams 286 and 288 respectively. Immediately after the beginning of the return stroke of slide 'member 28I, rod 285 will reach the lowermost will reach the oblique surfaces 586 and 5I2 re- 9 'spectively of cams 286 and 288, which surfaces will push rods 285 and 385 lengthwise to the front, into contact with the lowermost surface 58I of cam 281 and the uppermost surface 581 of cam 289 respectively.

This play will be repeated and the key 2I3 depressed each time when a word of the roughdraft has been written, thus bringing into .chamber I96, I96 a number of blade pairs which corresponds to the number of spaces which are to be inserted between the subsequent words of a script-line (Fig. 18). This depression of key 2I3 will not shift the carriage,

The arrangement of the expansion of the blade pairs for filling the total spacing width will be described now.

Two guide rods 386, 381 are mounted in bars 888, 889 (Figs. 1 and 5) secured to the machine base. Top structure I96 and base structure I96 are arranged to slide on these guide rods 386 and 381 and may be reciprocated by means of slot bar 8I2, pivoted at 328 to the machine frame, and links 8I3, which slot bar may be controlled by means of slot guide members 3I1, 3I8 and control lever I91 which is pivoted at 3I6 to the By pulling knob 235, bar 216 will pull shutter I16 into the space between chambers lSfi-IBA' and ESL-I96, Figs. 10 and 11, and pin I82 will abut tongue 2" of shutter Ill and thus take shutter I'll along with it, and shutter I'I'I will 5 now he at the left end within chamber ISIS-'- IaE', the distance between shutters H6, ill, defining the total spacing width, as described above.

If lever I91 will now be depressed, top structure 296 and base structure 296' will be moved towards each other and will cause the wedge-like blades oi the upper tier and those of the lower tierto displace themselves, one tier towards and between the other tier. Due to their wedge-like surfaces, the blades of the upper tier and those of the lower tier will slide by means of their complementary oblique surfaces in relation to each other and all blade pairs will expand their width until the blades of both tiers together will have filled up the space between shutters I16 20 and I". In this way, the available total spacing is subdivided among the blade pairs and into a number of equal units which corresponds to the number of interstices between the subsequent words of the line, the individual width or spacing unit being the same for all pairs, and the width of each pair representing the unit of spacing width which is to be inserted between subsequent words of the line.

This spacing width unit will be transferred to 39 the carriage escapement in the following way:

A push button 2I6 at the front of the machine (Fig. 1) is connected, by means of a rod 2I5 (Figs. 2 and 6) traversing the machine frame, to a head 2", which is slidably arranged in guides 36 40I (Figs. 2 and 6) of a bracket 402 secured to the base frame of the machine. Head 2" is provided with an oblique slot 403 into which slot a pin 404 protruding from the lower surface of a guide member 2I6 enters, Fig. 6 showing both 40 elements lifted from each other for a better understanding only. Guide member 2I8 carries, by means of a rod 2 I3, 2. feeler head 4I9, which feeler head in its rest position reaches a vertical plane containing the left hand surface of shutter ill,

5 as indicated in Fig. 10.

The lower blades I33 are provided with lateral lugs 236 and when, by means of structures I96, 896', the blades of the pairs have been displaced towards each other or expanded their width (Fig. 11, and Fig. 6 blade pair 13) these lugs will reach into the path of the feeler 6, whereas the feeler may pass just above the lugs, Fig. 3, when the blades of a pair are still in their original undisplaced position in chamber I84, I84 (Fig.

6, blade pair A) or in chamber I96, I96. The feeler head 4I9 may pass through an opening 430 of shutter I16, when this shutter is closed, Fig. 6. As, with the displacing of both tiers of blades towards each other, the lower blades will be shifted to the left (Figs. 6 and 11) in relation to the upperblades and in relation to the surface plane of shutter H6 facing the blades, the feeler 4I9,

when button 2| 6 (Fig. 6) is pulled, may now move a short path to the left, until it contacts lug 236 of the lower blade I33 next to closed shutter I16; see Fig. 11. As the length of this path is dependent upon the width of the compressed blade pair, the feeler will thus register the width of the spacing unit which is to be inserted between two subsequent words of the script line,

and the width will be stored as long as button 2I6 remains in its position.

The width of the spacing unit thus having been stored, the blades may be reset. For this 76 purpose, the structures I96, I96 will be lifted by means of lever I01; the shutters I76, I'II opened by pushing button 235; and the blade pairs I83, I33 re-shifted from chamber I96, I96 into chamber E84, I84 by depressing lever I; and the blade pairs are thus brought into the position shown in Fig. '7.

Head M8 is further provided with a slotted slide guide 222 in which guide a tongue 223 may slide which bears at its lower surface a protrusion 305 and a pin 406. This pin 406 engages a slot 661 of a lever 224 pivoted at 408 to the base frame II of the machine. A nose 409 of lever 226 is in operative connection with a bar 221 which traverses the machine, pivots about pivot 9, and bears at its front end a key 226. A bar 2 in the form of a rectangular frame is arranged within the base frame II of the machine and is likewise pivoted at 9. This bar effects the spacing movement of the carriage by means of an escapement clutch 32. This 'escapement clutch 32, which may grip or release a rail 66 secured to the carriage, is stationary with the machine frame, may however, when its grip is released, be displaced a controlled distance along rail 66, and when its grip is closed, may move together with the rail or the carriage in accordance with the distance to which it had been set. This displacement may be effected by means of bar 2, rod 38, cam mechanism 0, 4. For a more detailed disclosure and description of the escapement clutch and its function and control, reference is made to my copending application Ser. No. 112,020 filed on Nov. 21, 1936. This clutch when controlled to grip the rail 66, as described in my co-pending application Serial Number 112,020, may move together with the rail 66 or the carriage for an escapement stop until it will abut against a. stop 40 securedto the machine frame.

The distance between stop 40 or the point where the common movement of clutch 32 and rail 66 is stopped, and the right hand edge of the escapement clutch 32at the point where the clutch grips rail 66 and from where the common movement of clutch 32 and rail 66 starts, Figs. 2 and 6, defines the spacing width which may be utilized for insertion between subsequent words.

This spacing width may thus be controlled by two means. First escapement clutch 32 may be slid in the direction. along rail 66 by means of member M0 to which it is operatively connected by means of pin 4 and an oblique slot M2 and which member is operated by bar 2 through the intermediary of rod 38 downwardly extending from member 0 and contacting bar 2. When front bar 2 is depressed by one of the type keys 4, or one of the spacing keys 234, 233, 230, 23I, 232, rear bar 2 will raise cam M2, and clutch 32, which has released its grip, will thus be shifted to the left in relation to rail 66, Fig. 2, a distance which depends upon the stroke or lift of rear bar 2.

The setting of clutch 32 in relation to rail 66 may becontrolled secondly by tongue 223 which may be displaced into the path of escapement clutch 32, and against which tongue, the right hand edge of clutch 32 will abut when escapement clutch 32 will be moved by means of bar 2-by the intermediary of lever 224, bar 22! and key 226-and which tongue, under the control of feeler 9 as described above, and, by the movement of head 2I8, has been positioned lengthwise in relation to the carriage, see also Fig. 6.

Le'ver 221 carries a lug 229 (Fig. 1) for engaging bar 2, which lug 229, when key 226 is operated, will, according torts length, give to bar 2 a stroke of definite length and will through the intermediary of this bar, rod 38, cam mechanism H0, 4| I, 2, displace clutch plate 32 on rail 66 5 to an extent which defines the spacing width corresponding to the width of an undisplaced blade pair I83, I83, which width is to be considered as the normal spacing width. Key levers 230, 23!, 232, 233 and 234 which are pivoted likewise about pivot bar 9, have lugs to engage bar 2, which lugs are of such various lengths as to give spacing widths as follows: key 230: Cicero; key 23i: sin-quad; key 232: en-quad; key 233: thin space; key 234: half thin space.

These levers are not associated with the mechanism for adjustment of the line; they operate by means of bar 2 and rod 38 for moving the escapement clutch 32 away from abutment 4|] for a distance determined by the length of their respective lugs, If, however, key 226 is manipulated, this key bymeans of bar 221, lug 229 and bar 2, will operate bar 38 and by means of the rear end of lever 22?, lever 224 thus bringing,

es'capement clutch 32 into a distance from stop 40 which corresponds to the greatest spacing unit which by operation of key 226, might be inserted between each two subsequent words of the typescript, and which spacing unit will then be determined, set, and stored as above disclosed according to actual conditions and by the setting of tongue 223 in relation to clutch plate 32.

When the type-script line is being written, key 226 will be manipulated each time a word had been written. As soon as the line has been completed, button 2|6 may be pushed to its rest position, and thus, the feeler will be likewise restored to its zero position and the machine cleared for the operation of the next line.

The operation of the machine thus comprises in extenso the following stepst L The total length of the words composing the line is determined as follows: The carriage is at its starting point. Pointer H5 is moved in slide guide 2% until it is in juxtaposition with the zero point of scale W2. A rough draft of the line is written, the words following each other without spaces. Pointer I15 shows on scale M2 the number of Ciceros required. The head of shutter I'll is displaced and set on scale H8 at a distance, equal to the number of Ciceros aforedetermined on scale H2, from the zero point of this scale which corresponds to the position of shutter H9.

2. The total length of the words and the appertaining total spacing width are examined by means of scales 212, 31 2, M2 and the composition of the line is eventually changed.

3. When writing the rough draft of the line, key 2H3 isdepressed each time when a word has been written; or when the number of required spaces ,has been ascertained otherwise, by depressing key 213 as often as there are interstices between each two subsequent words. Depression of key 2I3 does not efiect a displacement of the carriage, but causes the blade pairs I83, 883' to be assembled within the spacing chamber I96, n96.

d. The blade pairs assembled within the spacspacing width of a type-script line, a magazine adjacent tosaid spacing chamber, a plurality of divisor elements of modifiable thickness within said magazine, means for conveying said divisor elements from said magazine into said spacing chamber, a key for operating said conveying means, said conveying means adapted to convey one divisor element at each operation of said key and in accordance with the number of spaces of said type-script line, means for evenly ex-. panding said divisor elements until full occupancy of the set width of said spacing chamber, said divisor elements thus defining equally wide spacing units, and means for transferring the width of thb spacing unit to a space varying de-' vice of the carriage escapement.

2. A spacing mechanism as set forth in claim 1, said divisor elements comprising each a pair of complementary wedge-shaped blades, the blades of said pairs being arranged in an upper tier and a'lower tier respectively, guiding means at the top structure and at the base structure of said spacing, chamber and of said magazine, the blades of said upper tier suspended from said top guiding means, the blades -of said lower tier supported by said base guiding means, the top structure and the base structure of said spacing chamber forming jaw-like members, means for reciprocating said jaw-like members, one in relation to the other. i

3. In a spacing mechanism as set forth in claim 1, indicating means adapted to indicate towards the end of a draft line typed without spaces the total spacing width of said line, said chamber width setting means comprising a pair of shutters adapted to be moved into and withdrawn from said spacing chamber, one of said shutters being displaceably arranged in relation to the other for the purpose of adapting their distance to the total spacing width of said line.

4.-A spacing mechanism for a lithographicscript typewriter, said mechanism including a stationary spacing chamber, a stationary magazine adjacent to said spacing chamber, a plurality of pairs of complementary wedge-shaped spacing blades, means provided at said magazine and said chamber for slidably supporting the blades of said blade pairs in two tiers, a conveying lever, conveying means adapted to be operated by'said conveying lever and to convey any predetermined number of said blade pairs from said magazine into said spacing chamber,one pair at each operation of said conveying lever in accordance with the number of spaces of a type-script line,two shutters associated with said spacing chamber, one of said shutters displaceable in relation to the other for the purpose of adapting their distance to the total spacing width of said type-script line, both said shutters adapted for movement into and withdrawal from said spacing chamber and for Width to a space varying device of the carriage escapement.

5. A spacing mechanism as set forth in claim 4, said mechanism further including two guide 15 plates, one solidary to the other, and arranged one in front of said blade pairs and the other at their rear, and means for shifting said guide plates in the direction from the spacing chamber to the magazine.

6. A spacing mechanism as set rforth in claim 4, said means for transferring said space unit width to a space varying device of the carriage scapement comprising a key operated feel- 1 er adapted to be displaced in accordance with the expansion width of one blade pair, a displace- -able abutment at the stationary part of the typewriter, carriage spacing means, and intermediary mechanism adapted to displace said abutment relatively to said carriage spacing means in accordance with the displacement of said feeler and said expansion width, said abutment adapted for transitory co-operation with the typewriter escapement.

Rnmt mp1sv Rom ROBERT emmmr.

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