US1834613A

US1834613A - Typewriting machine

Info

Publication number: US1834613A
Application number: US364038A
Authority: US
Inventors: George G Going
Original assignee: Remington Typewriter Co
Current assignee: Remington Typewriter Co
Priority date: 1929-05-18
Filing date: 1929-05-18
Publication date: 1931-12-01
Anticipated expiration: 1948-12-01
Also published as: DE581078C

Description

Dec. 1, 1931. G G GOING 1,834,613

TYPEWRITING MACHINE Filed May 18, 1929 ATTO RNEY Patented Dec. 1, 1931 pair en .STATETS PATENT -O1F,.F.. ICE

GEORGE e. GQVINGQYOF GLENBROOK, CONNECTICUT, ASSIGNOR r0- REMINGTON wanes COMPANY, OF ILION, NEW YORK, A CORPORATION or new .YORK

TYPEWRITING MACHINE Application filed May 18,

,to everlap, when desired, that end ofthe uplaten which carries the line spacing wheel and to be fed in the usual manner free from interference or obstruction hythe line spacing dctent, its support and everyrpart of the line spacing mechanism. 7

To the above and other ends which will hereinafter appear my invention consists in the features of construction, arrangements of partsandcombinations of devices set forth in the followingdescription and p articularly poi nted out 111 .the Iappendedclanns.

In :the. drawings, vhereln like reference characters indicate corresponding parts in :the different views Fig. 1 is a fragmentary front elevation of :a carriage of a typewriting machine equipped with the devices of my invention.

Fig. 2 is .a vertical, transverse sectional view of the same taken on the 'line.-2-2of Fig. 1 and looking-in the direction of the arrows at said line. I

Fig. 3 is an enlarged detail perspective view of the platen detent and its. carrier, shown detached.

Fig. 4 is an enlarged, detail perspective view-of the manually controlled line spacing devices and the coacting regulatingdevice. I

igs. to 10 inclusive are fragmentary,

detail, ;perspective views of parts that enter into the line spacing mechanism, said parts being shown detached. I

'Myinventwn is particularly useful in port .able'typewriting machines, wherein ity is desirahle to confine the dimensions of the machine within the smallest limits consistent with-an operatio-nand use equal to that of an ordinary large sized standard machine. In

1929. Serial No. 364,038.

line, say, nine inches, it also is desirable :to confine the overall width of the carriage as much as possible consistent with other requirements. Therefore, in order that themachine may take the largest size standard envelopeof a length of, say, nine and one half inches, or one that iseven longer, or awvork sheet of equivalent width, I so-construct the parts that-the ends of the envelope, or a correspondingly wide worksheet, may overlap both ends of the platen,.and particularly that end thereof to which the line spacing wheel is connected, without being interfered with in any manner in its feed movement any of the devices .thatcoact with .the linespacing wheel, such devices, for example, as the line spacing wheel detent, :the line spacing pawl and actuating devices thereforand the .supports for suchlpartsh This'enables me to keep the overall width-wise dimensions of 7 the carriage within the required limits with- ,out sacrificingother features, such as the provision of finger wheels at both ends of the platen, etc.

With these,-,and other objects to be hereinafter stated, in View I provide the following construction. i 1

I have shown my invention embodied, in the present instance, in a noiseless portable typewriting machineof :the character disclosed in .my application Serial No. 331,534L

filed J an. 10th,'1929., although .the invention is not restricted'to its embodiment in any .particular style oftypewritin g and-like machine.

. e The carriage or platen framemay'he ofiany sultable construction. .As shown in the .presentlinstance the carriage comprises a cross bar lwprovided with oppositely grooved .raceways 2 in whichanti-friction balls orrollers are received, and by which the carriage is supported and guided on a suitable case shifting frame or carriage support. The cross bar extends from side-to-side of the carriage and has end plates 3 secured "thereto near its ends by boltsand nutse and 5.

The end plates 8 are piercedto provide bearings for a cylindrical platen 6 of any suitable construction, and right and left h and finger wheels 7 and 8 respectively are con- :nected to turn "with the platen. :Suitable front and rear main feed rollers 9 and respectively, whlch are diagrammatlcally shown in Fig. 2, coact with the platen, or the paper a thereon, after the feed rollers pass through openings in a combined paper apron and table 11. The paper apron is provided with ears 12 at its ends, pivoted, at 1.3, to link 14 that extends fore and aft of the machine and are pivoted at their rear ends, at 15, to the end plates 3 of the carriage. Slotted lugs 16 on the ends of the paper apron 11 receive pins 17 in the slots therein. Said pins 17 project from the end plates 3 of the carriage to aid in guiding the apron in its movement to and from the platen, springs 18 tending to hold the apron against the platen.

Preferably connected to the left hand end of the platen is a line spacing wheel or ring 19 In the present instance this wheel is connected to the platen through a clutch (not shown) released by a finger piece 20. However, for the purposes of the present invention the line spacing wheel maybe regarded as fixedto the platen. As best shown in Fig. .2, the lin'e spacing wheel 19 is smaller m: diameter than the platen, which is diagrammatically represented .in this view by dotted lines. The wheel 19 has .two sets of coincidentteeth, one set being peripheral teeth 21 and the other set crown teeth 22 on the outer side of the wheel. I

A line spacing pawl 23 coacts with the crownteeth 22' to advance the platen line by line, Whereas a detent roller 24 coacts with the peripheral teeth 21 to assure a proper positioning of the platen at each line spacing operation and to prevent an accidental displacement of the platen from such position.

The detent roller 24. in the present instance. is mounted on the reduced end portion ofa shouldered rivet 25 uniting two arms 26 and :27 of a substantially U-shaned, sheet metal carrier, shown in detail and detached 31, the other end of which is anchored on a pin 32 projecting in from the left-hand end plate 3. A comparatively long and effective spring 31 is thus provided to operate on a long arm of the detent carrier to effectively hold the detent against the teeth 21 of the line spacing wheel. V I

' From a consideration more particularly of Fig. 1, it will be 'seen'that the detent carrier 28 is contained within the space between the left-hand end of the platen and the left hand end plate 3 of the carriage. From a consideration of Fig. 1 it will be seen that the detent, its carrier and spring and line spacing wheel are wholly confined within the projected peripheral limits of the platen at every portion thereof where a work sheet a surrounds the platen and is held in contact therewith. Stated from another point of view none of the parts in question extend beyond the limits mentioned except at the top of the platen where the upper end of the carrier 28 and its pivot extend beyond the limits mentioned. However, the projecting part at this point is disposed between those portions of a work sheet a which are moving to and from the platen, but do not surround and contact with the platen at this point, and therefore cannot interfere with the feed of a work sheet through the machine, even if such sheet is made to overlap and extend beyond the line spacing wheel, as shown in Fig. 1, where the dotted lines a indicate the side edges of a work sheet.

It will be understood that it also is essential in order to accomplish the above mentioned results that the line spacing devices which coact with the line spacing Wheel shall not interfere with the overlapping work sheet. The line spacing devices employed in the present instance fulfill these requirements although any other suitable mechanism which meets the requirements may be employed in lieu thereof. Thus, it will be seen that'the line spacing pawl 23, which as hereinbefore explained, coacts with the crown teeth 22 on the line spacing wheel, is pivoted at its upper end at 33 to a lever arm 34, shown in detail in Fig. 8. The pivoted end of the pawl 23 is recessed at 35 (see Fig. 10) to receive a coiled spring 36 (Fig. 9) secured at one end in a hole 37 in the pawl and at its other end in a cut-out 38 in the lever arm 34. This spring tends to turn the pawl in an anti-clockwise direction as the parts are viewed in Fig. 4, and to cause a pin 39 that projects therefrom to bear against a line space regulating member, designated as a Whole by the reference numeral 40. This member 40 is pivoted at 41 on the left hand side plate 3 of the carriage and carries an off-set shield 42 on which the pin 39 normally rests and rides in the line spacing movement of the pawl. It will be understood that this shield 42 normally holds the pawl 23 out of engagement with the teeth of the line spacing wheel, but as the arm 34 is lowered the pin 39 will ride down the inclined edge of the shield and first engage a tooth 22 of the wheel and then advance the wheel and platen connected therewith. The position of the regulating member 40 around its pivot 41 brings about an engagement of the pawl 23 with the wheel. sooner or later in the stroke of the pawl and thus determines the extent of line spacing movement of the platen efiected at each actuation of the pawl. .linthe present instance two extents of :line spacing are provided for, and a detent spring :43 .hOl'dS the regulatingdevice .at-one :end or the other of its pivotal :movement. One .end of this spring is looped aroundr-a fixed pin 44, wherefinger piece 46.

From an inspection o fYF-ig. 1 it will be understood that the substantially horizontal- 1y disposed arm-'34 whichc-arries the'line spacing pakwlextends from itspivoted end'atthe left or outside the left hand end plate 3 of the carriage, across or over said end plate to the space between the end plate and the adjacent end of the platen, where the pawl 23 is pivoted to said arm, for purposes which will hereinafter appear.

The outer end of the arm 34 has one end of a pivot pin 47 riveted thereto, said pivotpin receiving a bearing in openings 48 in a U-shaped supporting bracket 49, shown in detail in Fig. 6. This bracket is secured by suitable means to the outside of the left hand end plate 3. A line spacing lever, designated as a. whole by the reference numeral 50 and shown in detail in Fig. 5, is preferably made of sheet metal and comprises aefinger piece 50 and two parallel arms 51 and. 52 pierced at 53 to receive the pivot pin 47 and thus provide a pivotal bearing for the line spacing lever. lhe arms 51 and 52 are received between the parallel arms of the bracket 49 and are made from stock which is slightly resilient, for purposes which will presently appear. A spring 54 surrounds the pivot pin 47 between the arms 51 and 52 and is anchored at one end on a pin 55 projecting in from one arm of the bracket 49. The other end of the spring 54 is connected to a lug 56 that projects from the lever 34 and underlies an actuating projection 57 on the arm 51 of the line spacing lever and also underlies one of the arms of the bracket 49. The lug 56 coacting with an arm of the bracket 49 limits the return movement of the pawl carrying lever under the action of its returning spring 54.

It will be observed that the outer side of the projection 57 is beveled in opposite directions at the upper and loweredges thereof, as indicated 58 and 58 said beveled portions of the projection coacting with an inwardly extending pin 59 on an arm of the bracket 49. The effect of the cooperation of the bevels 58 and 58 with the pin 59 is to cause the line spacing lever 50 to be held in its uppermost effective position shown in full lines in Fig. 1, and also enables said lever 50 -tionJ57pas-ses *be'lowthe pin .59 and the bevel 58coacts with said pin. This allows the arm 51 to spring back to normal pos1ti0n,holdmg the line spacing lever against downward movement to the left and with the projection F150 '57 thereof bearing against the lug 56 on'the gpa'wl car-ry-inglever 34 in position to actuate it. The parts will be heldin this relation, and a line spacing actuation of the lever 50 to thedight does not affect this relation of 'tiheparts. "\Vhen, however, the machine is to be enclosed within its carrying case, then a displacement of {the linespacing lever 50 to .thcleft from its normal position results in causing the bevel 58- to act against the pin 59,, causing the a:rm 51 to be flexed rearward until the projection 57 passes the pin 59 when the arm '51 will spring back to normal position and the line spacing lever 50 may be moved freely down to the dotted line 130- s'ition.

1 have hereinbefore pointed out the position and arrangement of the detent for the line spacing wheel and its carrier, whereby they will not interfere with the feed ofpaper even though it overlaps and extends outward beyond the line spacing wheel for alimited distance. This same thing applies .toitheilinespacingpaavland theactuating and g r regulating .means therefor. Thus, from an inspection of Fig. 2 it will be seen that the parts last referred to are in the main confined within the projected peripheral limits of the platen, and that where they project A beyond .said limits they are either locatedto the left beyond any point where they can inter-fore with the overlapping :paper or they 1 extend up at a point where the paper does not acontact with the platen. That is to say, the a, parts that extend beyond said limit-,do so' onlyibetween :those portions ofa work sheet whieh'are approaching and feeding from the platen and are arranged tangentially thereof, and avhere the sheet is out of contact withand does not surround the platen.

From what has been said it will be seen that I'have provided simple, compact, inexpensive and effective means for the attainment of the ends set forth. I

"VVhile I have described one form or embodiment of my invention with considerable detail, it should be understood that various changes maybe madein the construction,;and parts thereof maybe employed without othn30 ers, without departing from my invention as it is defined in the accompanying claims.

lVh-at I claim as new and desire to secure by Letters Patent, is:

1. In a typewriting and like machine, the combination of a cylindrical platen, a line spacing wheel therefor,'an end plate of the platen frame adjacent to saidline spacing wheel and by which the platen is supported at one end, a substantially U-shaped sheet metal detent carrier having arms in substantially parallel planes and contained within the space between an end of the platen and said end plate and pivoted at its upper end to said end plate, a roller detent carried between the parallel arms of said carrier and coacting with the line spacing wheel, and a spring connected to one of the arms of said carrier, the detent, its carrier and spring beinn wholly continedwithin the pro ected peripherial limits of the platen at those portions thereof where a work sheet surrounds the platen, whereby a work sheet may everlap the line spacing wheel to substantially the full extent of the space between the line spacing wheel and the adjacent end plate of the platen frame and be fed around the platen without being interfered with by said detent,

its carrier, pivotal support and spring,

2. In a typewriting; and like machine, the combination of a cylindrical platen, a line spacing wheel therefor, an end plate of the platen frame adjacent to saidline spacing wheel and by which the platen is supported at one end, a spring-pressed detent for said line spacing wheel contained within the space between said end plate and the adjacent end plate of the platen, a pivotal support for said detent above the platen, said detent, its pivotal support and spring being confined within the projected p-eripherial limits of the platen at those portions thereof where a work sheet surrounds the platen, a manually actuated line'spacinn' arm pivoted outside of and cross in g said end plate to the space between the end plate and the platen, a line spacing: pawl carried by said arm, the pawl and armbeing confined within the above stated limits, whereby a work sheet may overlap said line-spacing wheel to substantially the full extent of the space between the line spacing wheel and the adjacent end plate of the platen frame and be fed around the platen without being interfered with by said detent, its pivotal support, the line spacing pawl and arm and the mounting means therefor.

3. In a typewriting; and like machine, a combination of a platenframe having end plates, a cylindrical platen carried thereby, a line spacing wheel secured to one end of the platen, a detent for said line spacing wheel, and means for mounting said detent so as to enable a work sheet in the machine to overlap the line spacing wheel to substantially the full extent of the space between said wheel and the adjacent end of the platen frame and mg asubstantially U-shaped carrier havingarms that move in parallel planes, one arm being longer than the other, said carrier lJQJ I pivoted at its upper end above the platen, a cross rod connecting the arms of the carrier and providing a pivot on which the roller detent turns, and a sprmg connected to the longer arm of said carrier, the carrier, its

pivotingrmeans and spring being confined within the projected peripherial limits of the platen at those portions thereof where the work sheet surrounds the platen.

; Signed at Stamford, in the county of Fairfield and State of Connecticut, this 17th day of May A. D. 1929.

' GEORGE G. GOING.

Q". l. Li