US1322676A - Type-writing machine - Google Patents

Description

L. P. mss.

TYPE WRITING MACHINE.

AP PLICAT|ON FILED MAR. l. 19H.

1,322,676. Patented NOV. 25, 1919. I

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lL. P. DISS.

TYPE wnlms MACHINE.

APPLICATION FILED MAR. I. IBI?- 1,322,676. Patented Nov. 25, 1919; y

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BMW-m L. P. DISS.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. I. IQII.

.1,322,67 6.. PaIenIedNov. 25, 1919;

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ATTORNEYS provide improvements LOUIS P. DISS, OF ILION, NEW YORK.

i TYPE-WRITING MACHINE.

To all whom t may concern:

Be it known that I, LOUIS P. Diss, of Ilion, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Type-Writing Machines; and I do hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, vand to the reference-numerals marked thereon, which form part of this specification.

My present invention relates to typewrit` ing machines. f -v The object of my invention is to provide means whereby better alineinent, better spacing and better type impressions will be effected and greater speed attainable.

`A further'purpose of my invention is to provide an improved forni of type bar and typebar mounting andconnections and fure thermore to provide a novel and improved combination thereof with the escapeinent mechanism. y

Another purpose of this invention is to in the vescapement mechanism and the connection thereof with the rest of the typewriting machine.

It is well known that the large number of type bars contained in the segment of a front-strike typewriting machine ynecessitates the pivots of the type bars being short as compared with the length of the type bars themselves so that the slightest looseness of the'type bar pivots in their bearings will effect a magnified deviation from alinement and cause irregularity in spacing. One purpose ofmy invention is to eliminate this deviation. and` irregularity by .providing spring pressure against the type bars where- Abythe pivots will be forced against one side of their bearings instead of being Lfree to take various bearings which the looseness wouldl otherwise permit. Furthermore I provide novel and improved means for effecting this purpose.

Further purposesand advantages of iny invention will appearffronithe specification `to what is and claims herein.

I Ahave shown my improvements applied known as a No. 10 Remington typewriting machine, but it will be obvious thatgmy invention is not limitedin its appliupon the forwardly Specification of Letters 19a-tent.V Patented NOV, 25, i919, Appiication inea March 1,1917. seriai No. 151,836. l l

cation to that machine, but may obviously be applied to, many other machines.

Figure 1 is a. vertical sectional view through the material parts of a typewriting machine embodying one form of my invention,v

Fig. Y andthe auxiliary universal bar.

Fig. 3 is n segment and adjacent parts of a typewriter embodying vanother form ofmy invention.

Fig. t is a side view of an escapement de- 2 is a rear elevation of the segment a vertical. sectional view of the y vice embodying one feature of my invention.

Fig. 5 is a rear elevation of a part of a segment as shown in Fig. 3 and of an escapement dev ice asshown yin Figli.

Fig. 6 is an edge view on an enlarged scale of the pivoting end of a type bar.

Figs. 7 arid 8 are edge and side viewsirespectively on a similarlyenlarged scale of a itype bar hanger embodying one feature of myinventioini Y i .Figa .9 is a perspective viewV of the holdingzdog of the escapement devicef'and Fig.

bar hangers arrangedin the usual radial fashion upon the front face of a segment n19 of form usual to front-strike typewriting p machines. The type bars `are pivotally mounted in their respective. type bar hangers by means of oppositey disposedA outwardly extending short pivots 20 near one end' of each type bar being mounted in bearings 21 extending wings of the type Vbar hanger in necting rods 22 operatively connecting the heel of the type bars to the key levers 22a operates to raise the type bars from subthe way well known in .i they art so that a forward pull upon the Vconstantiallyahorizontal position to upright or printing position'against theplaten 63.

On account ofthe number of type bars which must be mounted -upon the limited surface: of the segment of the usual frontstrike typewriter the pivots upon each .type

bar must be very short relative to the length of thetype bar., As' the type bar must vmove very freely in its bearings it is obvious that there will be some looseness of the type/bar pivotsin thebearings and that this looseness will be as it were multiplied onmagniiied Y vin the length ofthe type bar Vresulting ina 'considerable lateral l deviation of the type upon the typerbar betingpossible:according r'10 to whether the type barhas. swungvto one sideor the other in its bearings as it was f making its main upward movement to print;

ing position. I havefo'vereome'this trouble by providing means wherebyl the type bar is f .pressed toone side of its bearings particularly asfit yapproaches printing position.

As means for exerting this pressure I l provide pins 281slidin'gly mounted'v inffthe segment i9 preferably as by being mounted in bushings 2 4 which in turn are fixed in the segment, said pinsv being spring-tensionedlto movey to` forward position and being so 'arrangedV that their forward ends project out from their mountings and yieldinglyengage shoulders v25 upon the type bars l5 and` 16 as said type bars approach upright or yprinting position. The spring tension from said f pins it will be-obviousis netsufiicientto prevent the-type'bars from comingto full printing positioinsbut is suiiicient especially in view 'of its being exerted close v to the pivots y20 to cause the pivots '20 of the said type bars to be pressed-to one sidejof their-bearings as the type bars approach printing position. It willbe seen that-this pressing of 1 pressure on the type bars relativerto the pothat the type bar pivots 20 v sition -of the type yand platen. As the type bars l5 and 16 and type bar-hangers 17 and 18and pins 2 3Y are-arranged, it will vbe seen are pressed-to the forward sideof their bearings 2l as they approach printin'gposition.k It is not essential: that the type barsv be pressed to the front of their bearings'as they may obvir -ously be pressed inv any given direction as 'long as the arrangement of parts is such that the several type barsare always subjectedtofpressure in the? same direction as they lapproach printing position. The 'ar- 7 rangement ofy 'parts shown, however, Vis a lpreferred'fform upon a machine of the class :illustrated as it' getsthe-desired resultwith a minimum of :additional parts andfwit-hout.

changing the usual arrangement kof Vparts upon the typewritmg., machine .and also because the pull of the connecting rods 22 'Y tends to ypull ,the pivots forward in their bearings.`

In order to have the pressing of the type bar pivotsto one side of rtheir bearings be most effective and most uniform, I prefer to have'the side of the bearings to which the type barpivots Vare pressed V-shaped or crotch-shaped as they will assist the spring pressure to most readily and most uniformly bring the type bar to uniform position as it approaches printing position.

Itis obvious that variousmeans may be used to exert the necessary YYYspring pressure Y upon the heads of thepins 23. One simple method of accomplishing this is shown in Figs. V3v and 5 'ofthe'drawings wherein resilient Vtongues `27 extend inward vclose to the back surface ofthe segment 19,V said tongues vbeing held in place relative to the segment at their outer Yend by convenient Y means as by being formedas part of a single band 28 curved to iit'and securely aiiixed to the outer periphery ofthe segmentV 19 as by screws 29. Y

Another form Vof providing the necessary forward spring' tension forjthe pins 23 is shown in Figs. l and Y2 particularly and consistsinV having an auxiliary universal bar e30 segment-shaped in outline asfclearly indi-VV catedV in Fig. A'2-andv ofQsuchsize 'and so placed at the back of the segment 19 as -to cover the heads 26 of 'allof the Apins 23. This auxiliary universal bar .30 is. held'by spring tension against the heads of the said i Y pins, but is adapted to yield and move rearwardly ina parallel direction as any yof the type bars are moved-to printing position and the rearward movement impartedto it bya lpin 23 against the springtension of the auxiliary universal bar 30 performs the function already described in detail of pressing the pivots of the type bar to .one side in their bearings. I

VThe auxiliary universal'bar 30 is operatively connected to the escapement mecha-` nism Vso that` rearward movement -of said bar 30 to the proper extent operatesfor may operate the escapement" mechanism land meanwhile the said bar 3 0 is at all times held under spring tension to move in for#V y ward direction under the' impulse Vof the spring `forming a part ofthe escapement device. The means provided for holdingthe segment-shapedauxiliary universal bar 3.0' Yin position so that it :may

move slightly from theV segment 19,V -but parallel thereto', Yconsists of two. Leshaped brackets 3l having their upper ends-rigidly fastened as at 32 to opposite pointsup'on the backof the auxiliary universal bar while the. main part or lleg ofthe bracketfextends downward toward the. .back ef the` be at Vall times at 38 pivotally supported in the upper ends of arms 39 extending upward from the transversely extending shaft 34. It will now be obvious that vthe ytwo brackets 31 with their pivotal support upon four links providethe properlpa'rallel movement for the auxiliary universal bar'30.

In the full embodiment of my invention,

. as shown in Figs. land 2 particularly, one

' having its pivotal v doon rocker limits the movement ofthe spacof the transverse shafts preferably theforward one 34,-is the rock shaft through thel crank arms 40 of which vby means of connecting rod 41 going down to the main universal rod 41a there is received the movement to operate they escapement device. rlhis movement through crank arm 421and connecting rod 43, is transmitted up to the escapement device whereby each depression of any key lever to the proper extent operates the escapement device.

The escapement' device employed and shown in the drawings is in its construction and operation substantially like the escapement shown in Patent No. 1,021,182 granted to me March 26, 1912-s0 that only a brief 'descriptionof said mechanism is necessary here except as'to the improvements thereon shown vin this present application. The escapement wheel 44 having the usual teeth 45a -is mounted to revolve ina vertical plane parallel to the line of the movement of the car- Priage and operatively connected therewith 'and with the main spring in the usual wellknown manner, not shown in the drawings. r[hetensionof the main spring is to revolve the escapement wheel in the direction indicated .thereon in the'drawings ,by an arrow. The dogrocker 45 is provided with pivots '46v and 47 suitablyv supported in parts provided upon the frame of the rmachine but for vthe sakeV of clearness vnot shown. The axis of the dog rocker is at right-angles to the axisI of the escapement wheel. Pivotally mounted at48 upon the dog rocker `45 and axis at right angles with the axis of the dog rocker is the stepping ror 'spacing dog 49-which lextends upward and engages a tooth 45et of the escapement wheel 44 when the machine is not being operated which vis the position ofthe parts in Figs. 3 and 5 and which for convenience 1 will call the normal position.V A shoulder upon the ing dog 49 to the left as shown in ,'Fig. 5 where the spacing dog will hold one'of the escapement teethA invrdesired position.` A

spring 50 upon the dog rocker 45 bears upon the spacing dog 49 so as to throw it toward the right as viewed in Fig. 5 when the rocking movement of the rocker 45 carries the spacing dog out of engagement with the escapement wheel. A spring 51 connected at one lendY to a suitable projection upon the rocker 45 and at theother to a convenient fixed part of the machineframe yieldingly holds therocker in such position that the spacing dog 49 is in engagement with the escape-ment wheel 44 but allows the rocker to be moved so that its upper part swings to the left as the'parts are seen in Figs. 1 and 4 whereby the holding dog 52 is brought into line with the teeth of the esca-pement wheel. The-holding dog 52 is rigidly connected to its shaft 53 from which extends a crank arm 54 as most plainly seen in a perspective view thereof, Fig. 9. The shaft-53 of'said holding dog is pivoted upon arms 55 and 56 upon opposite sides of the dog rocker so that the axis of said shaft is at right angles' to the axis of the dog rocker. The crank arm 54 extends to the right as the parts are seen in Fig. 5 and is upon the opposite side of the vaxis of the dog rocker relative to the holding dog 52 so that downward movement im- Aheld against its-itendnecy tomove aslong as the key levers are held depressed. :As soon as the pressure` upon the key levers is released the movement of the escapement wheel begins at once since the holding dog is forced directly back by the escapement wheel while the holding dog is meanwhile being moved laterally by thereturn of the dog rocker to normal'position so -that the spacing dog is brought into position to engage the next tooth of the escapement'wheel.

1t will be seen, however, that for the purpose of using the features of my invention involving. .the spring pressure upon the type levers near their pivots and a spring-tensioned auxiliary universal bar, the escapement. mechanism here shown Vand described is notessjentialsince a great many of the estion that there is a spring-tensioned connectvcapement devices in use are-of such construcing rod moved at each operation of the es- -capement'device in a mannersimilar to the 'connecting rod 43 here shown.

Theiescapement device here shown, however, has the further advantage that the es- 'capement vwheel is held positively in printing position by reasonk of the direct connection ofrtheholdingdog back to the key levers resulting in la combination between the escapement device here-shown andthe features of spring pressure and auxiliary universal bar which is very advantageous and eiiicient.

vThe escapement device shown in the prese ent application is a modification of and an improvementfuponthat lShown in my previous Patent No. 1,021,182` in that in the vpresent device the hold-in'g dogwhenbrought toward-the normal position ofthe spacing dog' is notbrought intol line therewith, but isa 'step'v back from the engaging facev of the spacingl dog as plainly indicated in dottedl outline at 52a in Fig; 5. This construction results in greater speed and efficiency in the machine in that a portion of the letter space movement of the carriage and platen is made before Athe type reaches the platen` and whereby less movement vof thecarriage and platen is needed to complete-'the escapement'movement after the type` has made its impression upon the platen. It will be .seen

that the first part of the movement transmitted from kthe key levers will bring the holding dog forward to holding position vand move lthe dog roc-ker and said spacing and .-holding dogs laterally whereby the holding dog is brought into engagement with the escapement wheel. By reason of the step between the normal vposition of the spacing dog and the holding positionof the holding dog the escapementwheelis allowed to make a part ofits movement, butis then held temporarily from further `movement while the ltype impression is made through Ythe engagement ofthe holding dog with the the impression is made.

escapement wheel, bearing in mind that the .holding dog is directly f operatively connected to thekey levers sothat as long as -the Vvkey. levers are being depressed orV heldk down the:y escapement wheel cannot move l-While the escapement wheel is thus held in this intermediate position the type bar complete's its movementtoward the platen and Instantaneously with the removal of pressure upon lthe key levers the escapement wheel is free lto move and does move pushing the holding dog back as the holding dog is'at thesame time .al'lowed to move back and is swung laterally n .out 'of engagement with` the escapement wheel. It will be seen that this con-struction resultsin great speed of the machine inthat ,alp'ortion' ofthe letter space movement of the carriage is made before the type-reaches the platen which would' Votherwise bewaste time vand thus shortens up-the time-,necessaryafter' a type impression has beenlmade for'the completion of the escapement `move- Y ment because only a part of the complete movement remains `still 'to bek made; The arrangement and'adjustment ofpartsis such that .the type under its highest velocity'will v-ately skilled operators.

the lmachine even Iwhen usedlby unskilledoperators. Y f

It will be seen also that the escapement device here showin combining as it does the step .between the spacingv and 4theyholding dog and the holdingvdog positively held by the vkey lever combines very efficiently the feature of desirable highspeed and also the equally importa-nt factor of a definite type impression in. that the lplaten is positively vheld aslong as pressure on the key lever continues so that no .movement Vof the platen is allowed during the time when the'type is in .contact with the platen' thus avoiding blurred or double impressions.

With these features my machine also com! bines the auxiliary universal bar Voperated directly bythe type bars whereby the escapement device and type impression vmay be much more efficiently andA positively connected. r.In practice preferably the parts as shown in the drawing willA be so arranged that while the main movementof the escapement device isgstarted/-and' carried on` through the main universal.bar the last part of the escapement .movement will be brought about by vthe auxiliary universal bar .being actuatedby the type-bars so as tofovertake the-other movement and sorcomplete the escapement movement'at the instant the type impression has been made` .But itwill be obvious from the construction already Ydescribed and shown in the drawin `s thatthe socalledmain universal bar may eentirely eliminated as far as spacing when type im-Y pressions 'are' made and lthat the necessary.

operation of the escapement device at such times may be performed throug'hgthe socalled auxiliary.'universal'bar being operi ated by the type vbars moving the pins 23.

It will be seen also that the `provision l make for the type bars being heldto one` side of their bearings by spring pressure upon the ltype bars as theyfapproach printing.

. position allows me to makealooser-jointed machine .than would otherwise be practical and'so a machine `inoreeasily operated and consequently capable of greater' speed. `'Furthermore the `provision for the yslight spring tension against the type bars 'will also operate to hasten Vtheir movement awav from the; platen after the type has madeits impression thus assisting in'greater speed .of

the machine and will also prevent any rebounding of the type bars thus effecting better and clearer type impressions.

What I claim as new and desire to secure by Letters Patent is:

1. In a typewriting machine lthe combination of a type bar hanger having oppositely disposed bearings, a type bar having two oppositely disposed laterally extending pivots supported in the .hanger bearings, the side of the bearings towardwhieh the type bar pivots are pressed being crotch-shaped, and a spring-tensioned member adapted to come into engagement with said type bar near its pivotal support as the type bar approaches printing position whereby the type bar pivots are pressed against said crotch-shaped sidel of their bearings insuring uniformity of position of the type bar at printing.

2. A typewriting machine having a spring tensioned universal bar, an escapement device operated therefrom, a type bar hanger support, two spaced series of type bar harig-V ers on said support, type bars pivotally mounted in said supports and guided solely thereby and means for operatively connecting the type bars to the universal bar whereby the type bars operate the universal bar and the type bars are pressed to one side of their pivoted bearings by the tension from the universal bar, one series of said connecting means being arranged between the two series of hangers.

3. A typewriting machine having a spring tensioned universal bar, an escapement device operated therefrom, a type bar hanger support, two spaced series of type bar hangers on said support, type bars pivotally mounted in said supports and'guided solely thereby and pins slidingly mounted in the hanger support and adapted to operatively connect the type bars and the universal bar whereby the type bars are pressed to one side of their pivotal bearings by the tension from the universal bar, one series of said pins being arranged between the two series of hangers.

In witness whereof I have aiXed my signature, this 8th day of February, 1917.

Louis P. Diss.

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