US916865A - Type-writing machine. - Google Patents

Description

E. B. HESS.

TYPE WRITING MACHINE.

APPLICATION rum) JULY 9, 1907.

916,865. I Patented Mar. 30, 1909.

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' L h ATTORNEY E. B. HESS.

TYPE WRITING MACHINE.

APPLIOATION FILED JULY 9, 1907.

Patented Mar. 30, 1909.

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Patented Mar. 30, 1909.

E. B. HESS.

TYPE WRITING MACHINE.

APPLICATION 311.1113 JULY 9, 1907.

\k m VEMKW 0BR W m w n h vW My m r& ow i? UNITED PATENT OFFICE.

EDWARD B. HESS, or NEW YORK, N. Y., ASSIGNO ro ROYAL TYPEWRITER COMPANY, 0

HOBOKEN, NEW JERSEY, A ooaro ATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented March 80, 1909.

Application filed July 9, 1907. Serial No. 882,820.

-bon at the printing point when stencil Work is being made. The style of the machine to which this part of the invention relates is therefore a visible writing machine in which, at the moment of impact of the type against the platen, the ribbon is interposed to effect an impression upon the paper and immediately thereafter it moves away from the rinting point to expose to view what has been printed. There are various styles of such machines and this invention is not restricted in its ap lication. to any particular machine of that ind.

Upon perusal of this specification, it will .become obvious to those skilled in the art that the invention is in no wise dependent upon the mode of operating the type bars or upon other details of construction of a writing machine and that it IS equally applicable to machines printingupper and lower case 1n which either the platen or type bar segment is shifted.

The primary point of novelty in this part of the. invention is the provision of a bar or part, arranged transversely'of the machine, operated on depression of the several finger pieces in the key board and so constructed or provided with means that at will of the operator different ranges of movement are imparted to it on depresslon of the finger ieces to eflect through appropriate actuating devices different ranges of movement of the ribbon guide or vibrator. This bar or part is preferably the universal bar offthe machine. If, for instance, the ribbon vibrator be connected by suitable levers with this bar, the zone of the ribbon most nearly adj acent the printing point will be moved into position to print when a small range of movement is imparted to the bar and when a greater range of movement is imparted to it 1 there will, of course, be an increased amplitude of movement of the ribbon vibrator to I the printing point into rinting position. I Provision is made for timdly and proper actuation of the escapement and also for an adjustment of the parts by means of which the ribbon is not projected to the printing point thereby adapting the machine to stencil work. The principles of construction by which these results may be accomplished and the mechanical details which experience has demonstrated to be practical and efficient are hereinafter set forth.

front-strike, bar, ke -lever, carriage shift machine, that being the general style of machine to whichthe invention has been first adapted by me.

In the accompanying drawing: Figure 1 is a front elevation: Fig. 2, a vertical longitudinal section: Fi 3, a detail pers ective view on an enlarge scale showing t e; universal bar and ribbon and escapement levers: and Fig. 4, an elevationof one end of the universa'l bar.

All parts of a writing machine deemed unnecessary'to a clear understanding of the invention have been omitted from the drawings.

ais the rock shaft of the universal bar b and is connected with it by arms 0, c. The rock shaft turns in suitable bearings at the plates and the universal bar is held up by springs c 0 applied to the arms 0 c. Springs and stops to limit movements of parts against reaction of the springs will of course be provided where needed.

In the form of invention whicliI had elected to illustrate diflerent ranges of movement are imparted to the universal bar by adjustment of the bar at different elevations with respect to the parts-as key leverswhich act upon it on depression, of the finger pieces. By such adjustment under ready control of the operator the universal bar may be so set that all the characters will rint from the upper zone of the ribbon. y another adjustment they may be all caused to print from another zone. The same result may be obtained, however, in various other ways as, for instance, in the way shown inmy ap lithe universal bar is made revoluble and has bring a zone of the ribbon more remote from The invention is shown as applied to a sides of the machine of which d d are the side cationNo. 372,465 filed May 8, 1907 whe ein multiple faces of different radius.

present case, as in that application also, the universal bar is made to perform also its usual function of operatin the carriage escapement. The universal art is formed at each end with a cam-like slot having three surfaces of rest of difierent elevations marked 1, 2, 3 and in these slots fit headed bolts 9 projecting from the arms 0, c. As shown, therefore, the bar has three ad ustmentsv When the bolts are in the parts 1 of the slots, the extent of movement of the universal bar will be such as to cause rinting from the lower zone of a two zone ri bon. W hen they are in the parts 2, printing Wlll be from the top zone; and when in the parts 3, the ribbon vibrator will remain at rest when stencil work may be done. This adjustment may be conveniently effected by a rod 3) extending through the side plate (1 by manipuwise. It is held in adjusted position by a spring I) engaging three notches inv its upper ed e.

The ribbon vibrating lever f rocks upon shaft or and has a forwardly extending end through an aperture in which passes a rod 0 extending between the arms 0. The other end of the lever extends upwardly and is jointed at f to a link f 2 that is pinned to the downwardly extending arm of a bell crank lever g pivoted in a projection g extending downwardly from the front rail of a shifting carriage. The other end of the bell crank lever extends forwardly and is connected at its end with a vertically movable ribbon vibrator h. The escape lever i rocks loosely about shaft a and extends forward under the universal bar andalso upwardly. Its upper end is jointed to a link 'i that has pivoted to its end a short bolt or screw threaded link i that passes through the end of a rocking escapement lever j and has an adjusting nut 11' 1 applied'to its threaded end. The parts are I so arranged and proportioned that in either the first or second position of the bar, the ribbon vibrator Wlll first be actuated and then the escapement lever operated. In the third position, i. c. the lowermost position of the universal bar, its slight downward movement is merely sufficient to operate the escapement and the last motion ofthe connections f, f, g, h, is such that the ribbon vibrator need not be elevated at all. However, to provide for exact elevations of the ribbon vibrator-and to prevent overthrowthereof,

there is provided a stop plate 7c through an aperture in which passes the forwardly ex-v tending arm of the bell crank g and the upper wall of which has three portions 4, 5, and 6 of different elevation corresponding with the 1 parts 1, 2, 3, of the universal bar adjustin slot. When, as in Fig. lfthe arm of the bel crank is immediately opposite or undersurface 4, the universal bar is in its lowermost lation of which the bar may be adjusted enderases from rising. When, however, the plate is is shifted to the right, as viewed 111 Fig. 1, and

In the position and the ribbon vibrator is prevented the part 5 thereof is opposite or over the arm of the bell crank, the ribbon vibrator ispermitted to rise sufliciently to bring the upper zone of the two-zone ribbon into printing position and by further shifting the plate to ring the par-t 6 thereof above the bell crank lever, the vibrator will rise to greater elevation to bring the lower zone of the ribbon into printing position. The adjustmentof the ribbon vibrator stop device may be effected by hand independently of the adjustment of the universal bar but naturally it is preferred that on adjustment of the universal ar the stop devices will be automatically correspondingly adjusted. This may be conveniently accomplished in the manner shown in the drawing.

Projecting rearwardly from the right hand end of the universal bar is a horizontal pin m that embraces the forked end of a vertical lever m pivoted at m and having its upper end forked to embrace avpin 'm projecting from the face of a transverse sliding bar k to which the stop plate 76 is attached or with which it may be integral. Other forms of stop devices may, of course, be employed. I have shown another construction of stop devices performing the described function in my prior application above mentioned.

Except as specifically stated in the claims, this invention is not limited to the details of construction shown since obviously they may be varied and the same general results obtained by other organizations which may readily be devised by skilled mechanicians. Normal position of the parts is determined by an adjustable eccentric stop 0 against which lever arm 5 is thrown by reaction of the universal bar springs c, c.

I claim:

1. A ribbon vibrating guide, a transverse bar capable of different degrees of lateral movement to eifect different ranges of vibration of the ribbon guide, an operating connection between the guide and bar, means for holding said bar. in difierent normal lateral position to effect in eachposition uniform movement of the ribbon guide and endwise movable means for at will changing the normal lateral osition of the bar so that another range of movement is imparted to it to efiect a difierent range of movement of the l'ribbon guide, escapement devices, a lever for operating them and means whereby on depression of a finger iece said bar in its movement from eithero said normal positions effects also operation of the escapement devi ces.

2. A visibl writing machine, comprising a laten, a ribbon vibrator that normally l ho ds the ribbon to one side of the line of print, finger pieces, means adapted to act between the universal upon a universal bar on depression ofthe finger pieces, a universal bar provided with tents of movement on depression of the finger pieces, and an o erati-ng connection bar and the ribbonvibrator. 3

3. A visible writing machine, comprising a laten, a ribbon vibrator that normally hods theribbon to one side of the line of 'print, 'finger pieces, means adapted to act upon a universal bar on depression of the finger pieces, a universal bar provided with operator-whereby itmay have different ex-- endwise movable means under control of the tents of movement on depression of the finger pieces, .an o crating connection between the, universa bar and the ribbon vibrator'and escapement devices actuated by the universal bar'whenever the said finger piecesare depressed. 4. In a ViSlblO" machine, a ribbon vibrator, finger pieces, a universal bar, devices acting, on depression of the finger pieces, upon the universal bar, end-t wise movable means under control of the operator for adjusting the normal position] 0 the surface of the universal bar upon'which said devices act to thereby, at will, cause the bar to have different extents of movement when finger pieces are depressed, and an operating connection between the universal bar,

and the ribbon vibrator.

, 5. In a visible writing machine, a fibttn' vibrator, a universal bar, an operating con-- nectlon between the two, means for operatwhereby the universal bar may be a justed so as to have different ranges .of movement a platen.

subscribed my name. ing the universal bar on depressionof the:

on depression of the finger pieces, and ribbon vibrator stop devices ad usted to the vinection between the two, means for operating the" universal bar on depression of the fin er pieces'ofthe machine, endwise movab e means under control of. the o erator whereby the universal bar" may be as so as to have different ranges of movement on'depression of the finger pieces, ribbon vibrator stop deVicesadjuSted to the vibrator by the ad ustment of the' universal bar, escapement devices and an operative connection between them andtheuniversal bar acting to operate said devices whenever the universal bar is operated by any of said finger pieces.

. 7. A ribbon vibrator, a universal bar, an

' operative connection between the two, key

levers and means for moving the universal bar transversely endwise to adjust it to difierent' elevations? 8. Aribbon yibrator, a universal bar, an operative connection between the two, levers arranged above the universal bar, means for adjusting the universal bar endwise to positions of difierent'gelevation, a stop device havin surfaces of different elevation for limiting t e throw of the vibrator and an operativeconnection by which said stop devlces are automatically correspondingl adjusted when the universal bar is adjusted In testimony "w ereof, have hereunto EDWARD ,BJHESS.

Witnesses:

J M. LEE

F. Bnowme justed

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