USRE12970E - wagner - Google Patents

Description

P. X. WAGNER.

TYPE WRITING MACHINE.

APPLICATION mum MAY 12, 1908.

Reissued June 8,1909.

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P. X. WAGNER. TYPE WRITING MACHINE. APPLICATION nun) MAY 12,-190a.

Reissud June 8,1909 12,970. 4 SHEETS-SHEET 2.

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TYPE WRITING MACHINE.

APPLIUATION FILED MAY12, 1908.

' Reissued June 8, 1909.

borou h of Bronx, city,

section.

machine.

UNITED STATES PATENT OFFICE.

. UNDERWOOD TYPEWRI'IER OOMPAN Y, OF NEW YORK, N. Y., ASSIGNEE OF FRANZ X.

WAGNER.

IJ YPIEJVRI'IIIQFG? MACHINE.

Serial No. 260,983. 1908. Serial No. 432,440.

Tod-ll whom it may concern:

Be it known that FRANZ X. WAGNER, a citizen of the United States, resident of the county, and State of New fork, has invented certain new and useful Im rovements in Type-Writing Machines, of which the following is a specification.

The invention relates to typewriting machines and has for its object to improve the carriage mechanism and the platen shifting mechanism of such machines.

The invention will be fully described here inafter and the features of novelty pointed out in the appended claims.

The present application is a division of one filed in the Umted States Patent Office on November 12, 1904, Serial No. 232,413.

Reference is to be had to the accomp'any ing drawings in which Figure 1 is a central sectional elevation of a typewriting machine embodyingmy improvements. Fig. 2 is an elevation of such machine from the left side with the parts in section. Fig. 3 is a rear elevation partly. in

Fig. 4 is a sectional elevation substantially on theline 44 of Fig. 3. Fig. 5 is a sectional elevation of the lifting bar of the shifting frame. Fig. 6 is a. detailelevation showing the spring for balancing the shift frame. Fi 7 is a detail front view of the shift rail. ig..8 is an enlarged section showinj the connection of the shift rail with the shi t frame.

The type bar action comprises the 'keysl, mounted on levers 2, which are fulcrumed at 3, preferably in such a manner as tobe easily removable.

in-and-slot connection 5, said elbow lever being fulcrumed at 6 u on theframe of the Each elbow ever is connected by means of a link 7, with a ty e bar 8, normally resting on a cushion 9. he type bar 8 is fulcrumed at 10 upon the segment 11 and is preferably held in place by means of a latch 12. The key lever 2 also operates the escapement mechanism in any approved mannei for instance, through the medium of a universal bar 13 engaged by a toe 2 on the key lever 2. The carriage is fed in the usual manner by means of the spring connected with the tape 15, one end of whj'ife is secured to the carriage. The carriage consists of Specification of Reissued Letters Patent.

Original application filed November 12, 1904, Serial No. 232,413.

Original No. 873,641, dated December 10, 1907.

Each key lever is connected with an elbow lever 4 by means of a.

Reissued. June 8, 1809.

Divided and application filed May 18, 1905, Application for reissue filed May 12,

two portions, the front portion 16, which carries the platen 17, and the rear portion 18 which carries the feedrack '19 and may also carry other parts as for instance parts of the carriage stop mechanism which are not shown in the present application but which have been embodied in' another divisional application filed concurrently herewith. The feed rack 19 carried by the rear portion 18 of the carriage is ada ted to be engaged by a pinion A, carried y a'shaft B near its upper end. Near its lower end the shaft B carries an escapement wheel C. A bar D' extends from the center-of the universal bar 13 and is secured at its rear end to a cross bar'E fulcrumed to the frame at F. The bar D carries an escapement awl G, whichnormally arrests a tooth of t 1e escapement wheel C on the shaft B. The bar D is further provided with a projection H in-engagement with the stop pawl I, fulcrumed on the frame of the machine at J and pulled against 1 the projection H by a spring. Thus as the universal bar is moved rearward, the awl. G releases the esca ement wheel C, an .the

end of the stop paw I is swun into the path of the escapement wheel. 0th carriage portions are pivptally supported on the rear rod 20 of the machine frame, on'which rod the carriage travels transversely of the Inachine. The front portion of the carriage'is also provided with one or more jro l lers 21 adapted to travel on a rail 22, carried by the shift frame 23.

As shown best'in Figs. 7 and 8, the rail 22 I is provided with p ins .22 ada ted to be'received in openings 23' with $11 cient play to allow the rail to swing pivota'lly relatively to the frame 23 and to remain substantially vertical even whenthe frame '23 is tilted slightly'backward by being raised to its .upper position. This-shift frame 23 is hung on. the frame of the machine by meansof knife edges 24 (see Figs. 2 and 6) and a spring 25 is employed to press the shift frame 23 upward so as to counter-balance the weight of the front orti'on 16 of the carriage. In order that t 1e action of the spring-may be adjusted, it is preferred to provide aseries of notches, 23, in the shift frame as shown in Fig. 6; by engaging the hook 25, connected with the spring 25, with one or the other of these The tension of the spring can be varie engaging either the upper'or the lower opening ofthe hook with the frame 23. The tension of the spring 25 may be further adjusted by means of the screw 25' which holds the lower end of the spring.

The mechanism for shifting the platen portion of the carriage into position for the rinting of either small characters or capitals 1s as follows: Theshift frame 23 .(see Figs. 2, 4 and 6) is connected pivotally at both ends by lugs 23* with lifting bars 26, preferably made in two sections, adjustable by means of screws 26", so that the said lifting bars may be lengthened or shortened. The upper portions of said-bars have spring members 26 carrying the connecting )ins 26 which enter into openings 26 in the ifting bars 26; thus if it is desired. to disconnect the lifting bars 26 from the shift frame 23, to permit of the removal of said shift frame, the spring members 26 are pressed away from the lugs 23*, thus allowing the connectingpins 26 to be withdrawn from the openings 26 in the lifting bars 26 and the shift frame to be removed. The lower end of each lifting bar-has an opening through which projects a [pin 27*, mounted eccentrieal] y upon a disk 27 secured to a shaft 28. This. shaft is journaled in the frame by means of ball bearings 29, and'also carries a pinion 30 (see Figs and 5). This pinion is ocated only at one side of the machine and engages a toothed. sector 31 on a rock shaft 32. This rock shaft at the other end of the machine carries an arm 33 (see Fig. 1.). Shift keys 34 and. respectively are adapted to engage the arm 33 and the arm of the sector 31. Thus depressing either one of the shift keys the carriage will be moved to itsupper position, but if the shift key 34 has been depressed, the carriage will not return to its lower position u on the release of said shift key, but will be he (1 in its upper position owing to the engagement of a latch 36 pivoted at 37'With a projection 31 of the sector 31. The latch. 36 is under the influence of a spring 37 and has a beveled surface 37 at the bottom, which surface is adapted to be engaged by a pin 35 onthe.

Thus if the carriage is locked shift key in its upper position and it is desired to release it, the s if-t key 35 is depressed and the pin 35 will swing the latch 36 clear of the projection 31' and allow the carriage to drop. It will of course be understood that if the shift key 35 is depressed while the carriage is in its lower )osition, the carriage will be raised but'will drop back as soon as the shift key is released, owing to the fact that the pin 35 kee )s the latch 36 away from the pin 31', until 1; elatter is about in the position shown in Fig. 4. The latch 36 can be -rendered inactive, if desired," by swinging its upper end forward into frictional engagemerit with a surface of the frame, so that the latch will be held out of the path of the shift key 35 until the operator restores the latch to its normal position.

It is desired to call particular attention to the fact that the eccentric pins 27 a reach their dead center positions when the carriage is in its u mm or its lower printing position, ,thus locking the shift frame.23 against accidental movement in either printing position.

In order to allow tl'ie carriage to be readily removed, there is provided the following con- .structiomshown in Fig. 3. The frame rod 20 on which the carriage moves has at its ends two recesses 20 facing in the same direction in which recesses are located pins 20 adapted to be engaged by stationary slotted supports 38 carried by the frame of the machine. The slots or recesses 20 are somewhat wider than the supports 38 so that the rod can be slid lengthwise to disengage the .pins 20 from the slots of the supports 38.

In order to lock the rod 20 in position, there is provided a latch 39 movablevertically to fill the space between one of the supports 38 and thewall. of the recesses 20 as s iown at the right in Fig. 3. By this construction the carriage can be readily removed from the machine, and another carriage of different width substituted therefor.

Various modifications may be made without departing from the nature of the invention.

Claims.

1. In a typewriter, or like machine, a carriage, a shift framefor moving the carriage into different printing positions, bars connected with said frame, a pinion, a toothed sector engaging said pinion, a shaft carrying said pinion and provlded with. eccentric porfor swinging said sector. a

2. In a typewriter, or like machine, a shift frame for the platen portion of the carria e, a shaft carrying two arms,- one of WhlCl] is provided with a toothed sector,11o means operated by said toothed sector for shifting the platen section of the carriage, a latch adapted tohold one of said arms in its raised position, "and shift keys arranged to engage the said arms, one of the shift keys bemg constructed to swingsaid latch out of its locking position. i

3. In a typewriter, or like machine, a shift key, arocking arm adapted to be operated by said shift key; and provided with a toothed sector lying in the same planewith the arms, a pinion engaging with said sector, and a shift frame for the platen section of the carriage, adapted to be moved by the turn-. ing of said pinion.

4. In a typewriter, or like mach ne, ,a ,,re'' movable'carriage having a bar provided with recesses, stationary supports'arrang'ed to'extend into part of said recesses, a pm and slot l connection between said supports and Saldl30 tions engaging said shift bars, and ashift key 105.

' said front section and carrying a member of bar, and a latch extending into one of said recesses to lock the carriage to the frame of the machine.

I11 a typewriter, or like machine, stationary supports having open slots facing in the same direction, a removable carriage provided with a bar having recesses of greater width than said supports, and pins'to fit into the slots of the supports, and a unovable latch arranged to extend into one of said recesses between one of the supports and a wall of said recess.

6. In a typewriter, or like machine,'a carnage having a front section carrying a platen :tllh a separate rear section connected with the step by step feed mechanism, each section being mounted to swing about the same axls.

7-. In a typewriter, or like machine, a carriage having a platen, section and a separate escapement section connected therewith, each mounted to swing about the same axis.

8. In atypewriter, or like machine, ashift frame for the platen portion of the carriage,

and a shift rail engaged by the carriage and.

loosely mounted on the shift frame to always remain substantially vertical.

9. Ina typewriter, or like machine, a vertically movable shift frame for the platen riage, a shift frame for moving the carriage into different printing positions, and mechanism for operating said shift frame, said mechanismbeing upon a dead center when the carriage is in a printing position, to lock the shift frame against accidental movement.

.=12. In a typewriter or like machine, acar carriage is in a printing position.

' riage having a movable platen portion,

13. In a typewriter or like machine, a car means arranged to shift said platenportion and to move in unison therewith, aprojection.-on said means, a latch normally in the path of said projection adapted to lock the platen portion of the carriage in one of its positions, and a shift key disconnected from the latch but arranged to disengage said latch from said projection. 14. In a-typewriter 0; like machine, a carriage, a shift frame for moving the carriage into different printing positions, lifting bars detachably connected with said frame, -eccentr'ics for operating said bars, and means for turning the eccentrics, said eccentrics being arranged to reach their dead center positions when the carriage is in a printing position.

15. In a typewriter orlike machine, a carriage, a shift frame for moving the. carriage into different printing positions, lifting bars connected with said frame, movable means mounted on said lifting bars for normally locking said shift frame and lifting bars together and arranged to be moved to permit said shift frame to be disengaged from said lifting bars, and mechanism for operating said lifting bars, said mechanism being upon a dead center when the carriage is in a printing position, to lock the lifting bars against accidental movement.

16. Ina typewriter or like machine, a carriage, a shift frame for moving the carriage into different printing positions, lugs on said shift frame, lifting bars connected with said lugs, spring pressed means mounted on said lifting bars for normally locking said lifting bars to said lugs, and adapted to be pressed aside to permit said. lifting bars to e disconnected from said lugs, and mechanism for operating said lifting bars, said mechanism being upon a dead center when the carriage is in a printing position, to lock the lifting bars against accidental movement.

17. In a typewriting machine, the combi nation of a platen and a type-support, one of which is adapted to be shifted to change the relation of the type and .the printing point, an actuating device for said shifting part, and an eccentric connected .between said operating device :and said shifting part and which is turned by said'actuating device from one rest position to another to shift said shifting part, said eccentric automatically acting in its rest positions to positively hold said shifting part against vibration in either direction from eitherof the' two positions to which it is moved by the cocentric, substantially as set forth.

18. In a typewriting machine, the combination-0f a platen and at pe-support one of which is adapted to be shifted to change the relation of thetype and the rinting-point, an oscillatory eccentric, a lin connected to said eccentric and to said shifting part, and means for oscillating said eccentric from one to the other of its dead-center positions whereby the shifting part is shifted and-positively held from vibration in both positions,

21. In a typewriting machine, the combi-' nation with a laten and a type-support, one of which'is a apted to be shifted to change the relation of the type and the printingpoint, of a shift-lever, a second-lever having a rocking connection with said shift-lever, and an eccentric connection for transmitting motion from said second leverto the shifting part and for holding the shifting part from rebounding whenshifted, substantially as set forth.

22. 'In a typewritmg machine, the combination with a support for a series of typebars each having a plurality of printing characters,'and a platen, one of which is adapted to be shifted to change the relation .of said support and platen, of a shift-kev, an

eccentric actuated by said shift-key, and a device positively connected to said eccentric and t0 the shifting part, said eccentric being arranged to rest substantially on a deadcenter when in its normal'position and hold the shifting part against change of position until the shiftkey is moved, substantially as set forth. 23. In a typewriting machine, the combination with a supportfor a series of type- I bars each having a plurality of printing characters, and a platen, one of whichis adapted to be shifted to change the relation of said support and platen, of a shift-key, an

.eccentric actuated by said shift-key, and a device positively c'onnectedto said eccentric and to the shifting part, said. eccentric being arranged to rest substantially on a deadcen'ter when inits shifted position and hold the shifting, part in shifted position until the shift-kc i's moved toward its normal position, su stantially. as set forth. a

24. In a typewriting machine, the co mbi nation with a support for a series of typebars each having a plurality of printing characters, and a platen, one of which is adapted to be shifted to change the relation ranged to oscillate between two substantially" of said support and platen, of a shiftkey, an eccentric actuated by said shift-key, and a connection pivoted to said eccentric and to the shifting part, said eccentric being ar- 7 dead-center positions and to change the position of the shifting part when moving from one dead-center position to the other, substantially as set forth.

25. In a typewriting machine, the com- 7 5 bination with a support for a series of type bars each having a plurality of printing characters, and a platen, one of which is adapted to be shifted to change the relation of said support and'platen, of a shift-lever, and a connection between said lever and the shifting part constructed to move the shiftin g part with a slow starting motion'increasing during the first part of its movement and decreasing during the last part of its movement, substantially as set forth.

' 26. In a typewriting machine, the combination of a platen and a type-support, one of which is adapted to be shifted to change the relation of the type and the printingpoint, an oscillatory eccentric, a hnk connected to said eccentric and to said shifting part, a gear-segment'having a toothed engagement with said eccentric, and means for operating said gear-segment to turn said eccentric one-half revolution from one to the other of its dead-center positions, substantially as set forth.

27. In a front-strike typewritin g machine, the combination of a platen and a type-support, one of wbich'is adapted to be shifted up and down to change the relation of the type and the printing-point, an oscillatory eccen- 1 tric arranged below said shifting part, a link connected to said eccentric and to said shifting part, a gear -segment having a toothed engagement with. said eccentric, and means for operating said gear-segment to turn said eccentric one-half revolution from one to the other of its dead center positions, substantially as set forth.

28. In a typewriting machine, the combination with a support for a series of typebars each having a plurality of printing characters, and a platen, one of which is movable toehange the relative position of said support and platen, of a horizontal shift lever ivoted between its ends, a horizontal auXi iary lever arranged over the shift lever and having a rocking bearing thereon,

and an eccentric connection between said auxiliary lever and shifting part whereby the relation of the type-bar support and platen is chan ed, substantially as set forth.

29. n a typewriting machine, the co1nbination of a part' ada tedto be shifted to change the relation of t 1e printing-point and the type, a shift-key, and an actuating device forsaid shifting part which is moved by said shift-keyand is constructed to shift said shifting-part iv ith a slow-starting and slowstopping motion and to automatically hold the same against vibration in either direetion from either of two difierent substantially as set forth.

V 30. In a v typewriting machine, a case-' shifting mechanism comprising, in combination, a member shiftable to upper case posi tion, a key, to shift said member and control its return to normal position; means releasable by said ,keybeing rovided vto lock said shiftable member in hot normal and shifted positions; so that normally said mernberis locked, but upon depression of the keyitis positions,

unlocked, shifted and locked in'shifted posi- 15 .tion, and so thatjnpon release of thekey from pressure, said meinber is unlocked and returned to normal gosition and again locked. *Signedat New ork, in the county of New Yorkand State of NewYork, this 11th 20 day of May, .19Q8. a

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