US904208A - Type-writing machine. - Google Patents

Description

T. L. KNAPP. TYPE WRITING MACHINE. APPLICATION FILED DEozv, 1907.

Patented N ov. 17,'1908.

2 SHEETS-SHEET 1.

@iff/765565; @W I@ T. L. KNAPP.

TYPE WRITING MACHINE. APPLIOATION HLED DBO. 27, 1907.

Patented Nov. 17, 1908y Y 2 SHEETS-SHEET 2.

f IVriting Machines; and I do hereby declare ,v a part of this specification.

- the paper-carriage under the action of the such as accents over or in connection with vinafter set forth and more particularly pointed out-in the appended claims.

`writer of the Oli-ver type, Figure l is a 4Uivirnn smal grani* ortica THERON L. 'KNAPR OF WOODSTOCK, ILLINOIS, ASSIGNOR TO THE OLIVER TYPEWRITEH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

TYPE-WRITING MACHINE Specification of Letters Patent.

Patented Nov. 17, 1908.

'Application led December 27, 1907. Serial No. 408,257.

To all whom it 'may concern:

Be it known that I, THERON L. KNAPr, a citizen ofthe United States, and a resident of lVoodstock, in -the vcounty of McHenry and State of Illinois, have invented certain new and useful Improvements in Typethat the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, andto theletters of reference marked thereon, which forni This invention relates to improvements in typewriting machines and more especially' to an improved means in such a machine wherein certain characters may be printed witlibut any feed movement or shifting of letter-spacing mechanism, as is necessary, for instance, in printing special characters,

the regular letters or characters. Types for printing special characters are operated by one or more key-levers which effect movement of said types without actuation of the letter-spacing mechanism of the machine, and which are foi this reason usually termed dead-keys The invention consists in the matters here- In the accompanying drawings which show the invention as embodied in a type-` view in central, vertical, longitudinal section of a typewriting machine embodying my invention. Fig. 2 is a transverse, vertical, detail section,'taken.on line 2 2 of Fig. l. Fig. 3 is a fragmentary section, taken on the line 3 3 of Fig. 2. Fig. et is a view showing, partially in longitudinal section, a conneeting rod through which is operated the ribbon-throw mechanism. Fig. 5 is a perspective View of a lever which connects the auxiliary key-lever with parts which operate the ribbon-throw mechanism.

In saiddrawings, only such parts of the typewriting machine are illustrated as are essential to an understanding of the application of the several features of the invention thereto.

The general construction of the machine is l like thatshown in the prior United States Letters Patent to Thomas Oliver, nnmberi 599,863, granted March 1st, l898; and its details, other than those relating to the present invention, are similar to those illustrated in the prior United States Letters Patent to Cross and Griffiths, number 834,565, granted October 30th, 1906. As shown in said drawings, l designates the base-plate of the machine having a lower, forward, horizontal part 2 and a rear, elevated, horizontal part v3.

4, i designate a plurality of key-levers which are arranged below the rear elevated part 3 of the base-plate and are pivoted at their rear ends to a slotted fulcrum block 5 ldepending from. said part 3. The said keylevers are connected by upright links 6 with U-shaped type-bars, 7, '7, such as are employed in said Oliver typewriting inachine.

8 indicates the platen which is mounted in a paper-carriage 9. Said paper-carriage rests and has endwise movement on a shift.- frame IO having backward and forward shifting movement on the base-plate in order to bring the printing point of the paper beneath one or the other of a plurality of printing types carried by the type bars. Said shift-frame is provided with transverse guide-rods 11 and i12 on which travel the supporting wheels or rollers 12% and I4 of the carriage, and with a rearwardly.extending guide-rod or stein l5 which passes through a guide-standard 16 on the rear of the part of the base-plate.

1T designates an upright escape-wheel shaft located near the center of the machine and mounted at the front of the shift-frame l0. Said shaft 17 is provided at its upper end with a gear pinion I8 adapted to engage rack-teeth formed on the forward, longitudinal frainebar I9 of the paper-carriage. Said lshaft 1T has attixed toits lower end an escape-wheel 20 which operates in connection with an oscillatory cscapement lever 2l which extends from the front to the rear of the machine and is pivoted 'to the shiftframe so as to swing in a vertical plane. The forward end of the lever 21 carries a pawl 22 which is adapted for engagement with the escape-wheel, which latter is turned under the impulse imparted thereto by the carriage-actuating spring, in the manner set forth in said prior patent to Oliver. s.

23 indicates a transversely arranged, vertically movableA space -bar located beneath and adapted for actuation by the key-levers.,

Said space-bar constitutes part of an Voscillating frame whichA is formed by inea'nsl of saidY space-bar, a rock-shaft 2e arranged parallel therewith atthe front part of the machine and a plurality of arms which rigidly connect the said rock-shaft with the' yoke isarranged horizontally and adapted.

to receive a; stud 28 whichis fixed to tno armY of lthe space-bar frame. Through the 2o medium of the slotted yoke, vertical movement of the space bar is transmitted to the lever and backward and forward movement of said lever with the shift-frame is perm tted by said slotted yoke without affecting 25' the action of the escapeinent devices.

1 The Vspace-bar 23de thrown upward by' means oi" an expansively acting, spiral, iiit- 4ing spring 29 which is arranged vert-ieal beneath bseid space-bar and bears against the 3c saine'at its upper end. llie saidupper end ci the spring 29 is held in place by nient with a depending. stud on 'the space- .baix- The lower end ci said sprinrf rests on a bracket 30 which depends ifro horizontal part 3 of the base-pla, Thel machine illustrated is prov a ribbon-throw device Lor xnoving ing the-inking ribbon to carry it over the ed with striking point of the types and to retract 4o ittherefrom, corresponding gen ally with that shown in said @liver patent i o. 599,363, and which comprises parts as follows: A rigid supporting arm 8l is attached to the shift-frame and extends upwardly to a point in front of the platen." rllhe upper part or' said supporting arm is provided with a torwardly extending horizontal arm Two parallel,' oscillating links 33 and 3d are piv-.

oted at their lower ends, one to the arm and the other to. the top of the standard 3l.

The rearmost link 3e is pivoted to 'the supporting arm by means of a rock-shaft 35,

to which said link 34 is i'ig'idlyattached.

.To the upper ends of said links is pivoted a horizontally. arranged guide plate 36 which extends towards` the platen and is provided at its rear end with two ribbonguides or guide- loops 37, 37 located at opposite sides of the printing pointa The pivoted links described aiord movement of the guide-plate horizontally toward and from the printing point. For actuating the guideplate, the rock-shaft is provided with 'e rigid crank-armBS to which is pivotally connected the upper end of a connecting rod 39 which or sliiiiti senses y extends downwardly to' and has pivotal engagement with the forward end of the'escapement lever 21. These parts are so arranged that when any one of the key-levers el, e is depressed, the escape-lever will be moved in a direction to depress its forward' end with the connecting rod 39, .and the upper ends of the links andthe guide-plate thereon will be thereby advanced toward the platen. The inkingribbon lwill be thus carried over the printing point, and,'when the lkey is released and the type-bar rises permitting the rising of the space-bar, the said guide-plate and ribbon will be drawnzbackwardly from the platen.

Referring' now to the features of construction constituting my present invention: The connecting means between thelower end oi the connecting rod and the end of the escapement-lever 21 comprisese vertical slot in the lower end of said connecting rod, i Len is ek `ged by pivot pin [iii inserted t rough il of said escapement-lever; the purpose of the slot-and-pin connection neng to permit the 'connecting rod to be raised, by means hereinafter to be describe l, to aetuate the ribbon-throw mechanism with.- out imparting' movement to said esca-pementlever. ifi contractile, coiled spring el, (iB-lig. 4) attached fr upper end to a stud t-2,

proj 'ste f .n the connecting rod 3Q, a id at its lov end to tne progecting of the p et pin d0, acts to draw the connecting rod downward and te normally retain the pin Il@ in the upper end of the slot in 'the connecting rod.

e3 designates en auxiliary key-lever which extends from front to rear ot" the machine and is pivoted at its rear end to the iulcrum 1clock 5. Said key-lever #i3 is connected with a type-bai" which carries tlie special type to 4be operated by tlie said key-lever, but which 'type-bar is like the others of the seriesfof type-bars 7, 'i'. Said key-lever so far'as its function o actuating its connected typebar is concerned, is made like, and operates in tlie same manner as, the other key-levers. Said key-lever 43,"lioweyer, at a point 4above the space-bar'23 is cut away or notched on its lower edge, so as to permit depression of 4said ke -lever without Contact with or operation or the said.. space-bar. lnasmucli as the said auxiliary key-levers@ does not give any movement to the spacebar,'andit is necessary that movement be given to.v rthe ribbonthrow device, in `the depression of said aniriliary key-lever, in order that tlielribbon n" y be moved over the printing point when type operated by said auxiliary key-leve brought against the paper, aconstruction is provided as follows: dei indicates a horizontal operating lever which extends from front to rear ci the machine and pivoted at its rear end to tliefiilerum block Said lever is pivoted in a manner allowing its ,forward end to swing in a vertical plane and is arranged with its said forward end beneath to 'the connecting rod and guide-plate throughv the pin 40,`acting on the upper end of the slot in the connecting rod, and in the descent of the said rear end of the escapement lever, its mot-ion is transmitted tosaid connecting rod and the guide-plate through the medium of said spring 41, Said slot and pin, together'with the spring, therefore, constitute a connection between the escapement lever and connecting rod, adapted normally tov transmit motion from the escapement lever to the ribbon-throw device positively in one direction and yieldingly in the opposite direction for advancing and -retracting the ribbon, and which is adapted to yield in one direction in a manner to permit the connecting rod to be movedor lifted relative to,

' or without any movement of, the /escapement lever, when the connecting rod is moved by actuating means separate from. the said escapement lever; thatis to say, by the action of the operating lever 44 arranged and opeiating as above set forth. At a point in its length above the space-bar, lsaid lever 44 is notched in its lower edge (Fig. 1) to allow rising and falling movement of said connecting lever 45.

lever without its coming into contact with said space-bar. 45 indicates a transversely arranged, horizontal connecting lever which is' pivoted between its ends to a bracketmember 46 depending from the horizontal plate 3 of the machine. Said lever 45 extends from a point beneath the auxiliary key-lever 43 to the lever 44 and its end beneath said key-lever 43 is provided with an upwardly extending arm 47 adapted for contact with said key-lever. Said arm 47 has in its upper end an upwardly opening notch adapted to receive the lower edge of said key-lever 43. A contractile, coiled spring 49, connected at its upper end with the op-4 erating lever 44, and at its lower end with the bracket 30, holds the forward end of the said lever 44 at the downward limit of its movement so that the connecting rod 39 will Vbe normally'free to rise and fall, without restriction by reason of the presence of the end of-the lever 44 beneath it. These parts are so arranged that depression of said keylever 43 will depress the adjacent end of the At its opposite ends said transverse connecting lever engages the longitudinal operating lever 44 in such manner that the upward movement of said opposite end will impait upward movement to the lever 44 to effect the actuation of the ribbon-throw mechanism. A connection between the two levers 44 and 45 is provided consisting of a depending, integral arm 48 on `the lever 44, which depending arm is provided with a slot or opening through which projects the end of the lever 45, which latter lever in its upward movement acts on the upper edge 4of the said slot and effects thereby the lifting of the same to actuate the ribbon-throw mechanism, as above described.

Vith this construction it will be seen that: when the auxiliary key-lever 43 depressed,` it acts, through the levers 44'and 45', to actuate the type-bar connected therewith and the ribbon-throw. mechanism, without actuating the spacing mechanism. The said type-bar will carry a type-head adapted to print accents and like characters that are to be omitted in some instances and printed iu other instances, such as the acute, grave and circumex accents-so that such characters may be printed immediately over letters; it being obvious that no vspacing movement of the carriage should take place between the printing of the letter and of the character, Vwhen the latter is to be placed immediately over the latter, or is otherwise associated therewith. A f I claim as my invention .1. Ina typewriting machine, the combination with type -bars, key-levers, letterspacing mechanism embracing an oscillating escapement-levei; which is operated by said key-levers anda ribbon-throw device, of a connecting rod for operating the' said ribbon-throw device from the said escapemcntlever, having connection with the latter by means transmitting motion to the connecting rod positively in one direction and yieldingly in the opposite direction, an auxiliary key-lever connected with one of the typebars and which has no action upon the letterspacing mechanism, and means operated by said auxiliary key-lever and acting on said connecting rod to givel movement to the ribl bon-throw device.

2.111,22, typewriting machine, the combii nation Iwith type-bars, key-levers, a vertically movable space-bar extending beneath the key-levers, letter-spacing mechanism operated by the movement of said space-bar and embracing an escape'ment lever which oscillates in a vertical plane, vand a ribbonthrow device, of an lupright connecting rod for transmittin movement'to said ribbonthrow device rom the escapement lever, said connecting rod having connection with said escapement lever by means transmitting motion to the connecting rod positively in one direction and yieldingly in the opposite direction, an auxiliary key-lever'provided with a notch in its lower edge above the said space-bar, and means operated by the said auxiliary key-lever adapted .to act upon the said connecting rod for giving 'movement to the ribbon-throw device.

' 3. In a typewrt-ing machine, the combination with type-bars, key-levers, letterspacing mechanismE operated 4by the keylevers* and embracing an oscillating-escapenient lever, and a ribbon-throw device, of an upright connecting rod for operating the ribbon-throw device, having slot-and-pin 4connection with said escapement lever, a

spring lconnecting -said escapement lever with said connecting rod, an'auxiliary keylever connected with one of said type-bars and which has no action upon the letterspacing mechanism and means operated by said auxiliary key-lever and acting on said .connecting rod to give movement to the ribbon-throw device.

4. Ina typewriting machine, the combination with type-bars, key-levers, letterspacing 'mechanism operated by the keyconnection with said escapement-'lever, a

levers. and embracing an oscillating escapenient-lever, and a ribbon-throw device, of an upright connecting rod for operating the ribbon-throw device, having slot-and-pin Yspring connecting said vescapementlever with said connecting rod, an auxiliary key- `lever connected with one of said type-bars and .which has no actionl upon4 the letterspacing mechanism and means operated by saida'uxiliary key-lever and acting on said connecting' rod to give movement to the ribbon-throw device, embracing a vertically swinging operating iever located beneath and adapted to act upwardly upon the lower end osaid connecting rod.

In a typewriting machine, the combination with type-bars, key-levers, letterspacing' mechanism operated by the" keylevers and embracing an oscillating escapement-lever, and a ribbon-throw device, of an upright connecting rod, for operating the ribbon-throw' device, having slot-and-pin connection with said escapement lever, .a

vlocated beneath 'annees hina-tion withl the type-bars, key-levers, a 6o' space-bar located beneath and acted upon by the key-levers,v letter-spacing mechanism op- Y erated by the movement of said' space-bar and embracing an esca ement-lever which oscillates in a vertical p ane, and a ribbonthrow device, of an upright connecting rod for transmitting movement from said esca ement lever to the ribbon-throw device, said connecting rod having slot and'- pin connection `with said escapement-lever, a spring applied between the said escapementlever and the 'connecting rod, an auxiliaryV key-lever provided with a notch in its lower edge above the said space-bar, a longitu-4 dinally arranged, vertically swinging op- 75` erating lever, the moving end ofl which is located in the same vertical .plane with and is adapted to act upwardly upon the lower end of said connecting mdp-and atransverse connecting lever, pivoted between 8O 1 its ends and which is engaged yat one end with the said key-lever and at its opposite end with the said operating lever.

ln testimony, that I claim the foregoing as .my presence of twowitnesses, this 18th day of December, A. D. 1907.

THERON L. KNAPP.

Witnesses: Y

L. L. SGHROEDER, E. R. HOY.

invention I aflix myc signature 'in .the 85.

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