US837639A - Type-writing machine. - Google Patents

Description

No. 837,639. PATENTED DEC. 4, 1906. G. H. F. PLUMMBR & J. E. L. BLAGKMORE. TYPE WRITING MACHINE.

APPLIUATION FILED NOV. 5, 1904.

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APPLICATION FILED NOV. 5. 1904.

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M W M/WM 5 11? No. 837,689. PATENTED DEC. 4, 1906. C.'H. F. PLUMMER & J. E. L. BLAOKMORE.

TYPE WRITING MACHINE.

APPLICATION FILED NOV. 5, 1904.

I nvento rs.

Witnesses.

No. 887,639. PATENTED DEC. 4, 1906. G. H. F. PLUMMER & J. E. L. BLAGKMORE. TYPE WRITING MACHINE.

APPLICATION FILED NOV. 5, 1904.

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UNITED srAgps PATENT OFFICE.

CHARLES H. E. PLUMMER, OF TORONTO, ONTARIO, AND JOHN ERVINE LLOYD BLACKMORE, OF MONTREAL, QUEBEC, GANADAE SAID BLACK- MORE ASSIGNOR TO SAID PLUMMER.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Dec. 4, 1906.

Application filed November 5, 1904. Serial No. 231,589-

To all whom may concern.-

Be it known that we, OHnRLES HAMMOND FORD PLUMMER, residing at 109 Madison avenue, in the city of Toronto, county of York, Province of Ontario, and JOHN ERVINE LLOYD BLAOKMORE, residing at Montreal, in the district of Montreal, Province of Quebec, in the Dominion of Canada, subjects of the King of Great Britain, have invented certain new and useful Improvementsin Typ ing Machines and the Like, of which the following is a specification.

.This invention relates to improvements in type-writing machines and 'the like, as described in the present specification and illustrated by the accompanying drawings, that form part of the sani This inventionconsists, essentially, of a carriage having a constant propelling agent, an escapement mechanism controllin the movements of said carriage, a universal bar, a plurality of sets of levers actuating said universal bar at different distances of travel for each set respectively and re lating, through said bar, the operation 0 the escapement mechanism, and means connected with the spacing member ofi-the escapement mechanism for stepping the same correspondingly with the travel of the said bar.

The objects of the invention are to devise an arrangement of parts which shall obviate the necessity of crowding the larger characters into spaces suitable for medium-width characters and the spreading of smaller characters to fill spaces suitable for the medium letters and whereby the typing of conjunctions and articlessuch as and, or, an, and tl1e--may be accomplished in one operation and spacin in the finishe copy.

In the drawings, Fi ure 1 is a cross-sectional view of the mac line, showing the arrangement of parts connecting the escapement mechanism with the keyboard. Fig. 2 is a cross-sectional view, on an enlarged scale, of the parts to the escapement, the opcrating-lever, and the intermediate connections. Fig. 3 is a rear View of the machine in elevation. Fig. 4 is a perspective View, on an enlargedscale, of the escapement mechanism and stepping device. Fig. 5 is a perspective detail, on an enlarged scale, of the dog shown in Fig. 4 as engaging the stepping dee-Writrovide uniformity of vice. Fig. 6 is a side view of the escapement mechanism, showin the dog in engagement with the stepping evice for the spacin in printing a letter of a minimum width. 'g. 7 is a side view of the escapement mechanism, showing the dog in engagement with the stepping device for the spacin in printing the capital of the same letter. i 8 is a detail of the operating portion of a ever forming one of a set controllin the spacing for a minimum-width letter. ig. 9 is a detail of the operating ortion of a lever forming one of a set controil greater width. g. 10 1s a detail of the operating portionof a lever forming one-of a set controlling the spacing for a letter of still greater width. Fig. 11 is a plan view from above of the escapement mechanism, showing the spring-held dog in position engaging a step for a character requiring one space. Fig. 12 is a plan view from above of. the esca ement mechanism, showing the springhe (1 dog engaging a step for a character requiring two spaces. Fig. 13 is a plan view irig the spacing for a letter of from above of the escapement mechanism,

showing the spring hold dog engaging a third subsequent to the carriage assuming its normal position. Fig. 16 is a view in elevation of a rotary form of escapement mechanism from the rear of the machine and the stepping device in a sli htly-modified form. Fig. 17 is a side view- 0% the mechanism shown in Fi 16.

ike characters of reference indicate corresponding parts in each figure.

In the present specification the invention is shown as applied to a type-writing machine of the visible-writing class and a par ticular form of escapement mechanism.

'a is the carriage of the machine, having the rack b secured thereto in the usual manner in the particular class of machine illustrated.

of a crescent and rigidly secured to t bracket d and supported by the said bracket in proximity to t e type-bars of the machine. e is a fork fixedly secured to the rod f,

' which is j ournaled in suitable hearings in the {frame of the machine adjacent to the bottom- The fork e carries at the top in the sides.

' thereof-the escapement mechanism and pivot'ally supports thebracket d;

9 1s aspring encircling the rodf toward one end thereof and exertmg a ressure circumferentlally to return the for e to itsinne'r position subsequent to being forced rearwardly.

7a is a plate secured to the fork e and formmg art of the frame 'i of the escapement mec anism. is the retaining-pawl'projectving upwardly at one corner of said frame and fixedly secured thereto. 7c is a pin rigidly secured in the sides of said frame and extend-,

the arm n and at its'other end to a projecting pin from the frame and remaining at a ten sion to exert a constant spring pull in the direction of the paWls on the sl ding bar Z.-

g is a rod journaled in suitable bearings in the sides of the frame of the machine to the rear of the escapement mechanism and utilized as part of the shift-key mechanism by means of levers connecting it with the keyboard of the machine, as customary in machines of the Underwood, type The description of the parts and their uses thusfar in. this specification has been confined to mentioning their position inrelation to one another, as thetype ofimachine described is the Underwood, and its construc'tion is known'and is very adaptable for the purposes of this invention.

' 26 is the-stepping device, having the steps t, u,'andv' and t e step treduced at 27 for a portion ofits width. to the level of the next succeeding step u. The stepping device 26 is rigidly secured or forms art With'the sleeve 1', which is secured fir is thus secured on the rodg immediatelyto the rear of'the esca eme'nt mechanismflnto the proximity of w .ich it'extends. w is a dog having'the projecting tooth a: from its lowermost extremity and a wing 3 having an orifice 2 therethrough. The dog w ispivotally swung from the post 3, projecting up- 1 wardly from the rigidextension 4 from the bottom 'of the bar Z, and its tooth as is adapted to engage the steps t, u, and '0, respectively,-

v y 011 the rodg by" the setscrew s; The stepping device 26 v extent.

at the movement of the bar 1.. An inward pressure is exerted on the a dog 20 by the spring 5,.which encircles the ost 3 immediately above the wing 'y-from t e dog and has one end thereof can ht; on the edge of the extension 4 and the ot er pressing inwardly on. 1 be the forward portion of the dog. It-wi thus seen that the stepping device 26zis constantly. in .a fixed position, exce t when raised upwardly bythe turning of t e rod g, and as .t e frame of the esca'pement mechanism is actuated by themovement of the uniyers'al bar, as usual in'this class of machine,

the said frame will be in diiferent positions in relation to the stepping device, according to the distances of travel of the universal bar.

The movement of the frame .rearwardly will bring the tooth as into position to engage one or other of the steps t, a, or v 'orthe reduced portion 21 of the step t, as will be more fully explained in describing the operation of the 'machine.

The levers or t e-bars as they are here shown operating. t e universal bar are in setsthat is to say, the letters of the alphabet of minimum width, such as i and 1" form one set, While the a and --u and such Iettei'sform another set, and the w and m and such letters form another set,

i and as many more sets may be introduced as desired.

The operating portion of the levers is particularly illustrated in Figs. 8, 9, and 10. 6

' is a lever forming one of a set for such letters of the alphabet as i and/ll, having the portion 7, which abuts the universal bar 0 at each pressure on the key, connected with said lever; The operation of the key Will'bring the lever to an upward position, and-the por tion 7 will then contact with the universal bar and actuate it so as to move the frame of the escapement mechanism rearwardly to a limited extent, but sufii'cient to allow ofthe engagement of the particular step in the stepping device by the dog-w to space the letters ior l. 8 is a lever formingone of a set of such letters of the alphabet as a or In the lever 8 the ortion 9 is of greater breadth as compare to the portion :7, as indicated bythe dotted line in the drawlngs. This addltional metal will insure the travel of the frameiof the escapement mech: anism'for a sufficient distance to bring the dog into alinement to engage the step u. 10 is a lever forming one of a set for such letters of the alphabet as w and m, and in the portion 11 it will be seenthat there is still greater breadth of'metal, and consequently the universal bar will be moved to a.-greater The frame of the escapement mech-' anism will consequently be carried to 'a reater distance rearwardly suflicient to ring the dog to in alinement to engage the step c to permit of sufficient space for the greater width letters. This of course can be carried on as far as desirable, according to;

the width of the type usedthat is, by adding more steps or increasing the depthof the steps.

In Figs. 16 and 17 a modified form of con-. struction is shown. 12, 13, and 14-are the steps in the stepping device extending from a rod to the rear of the escapement mechanism in a similar manner as explained in the fore oing description. 17 is the retainingpawI to enga e the rack and hold the car riage during t e operation of printingand is fixedly secured to the .frame 20, extendingupwardly from the fork e and moving rear.

wardly and inwardly therewith. 18 is the spacing-pawl secured to the arm 16, piv otally arranged on the shaft 22 of the toothedwheel 23; Thearm 16 is spring-held by the spiral spring 24 encircling the shaft 22 to the face of the wheel 23, so as to keep the spacing pawl 18 in engagement with the toothed wheel until forced from engagement therewith by the rearward movement of the frame 20. The arm 16 on the release of the pawl 18' has the necessary force from the circumferentialtendency of the spring 24 to swing around until the dog 19, pivoted in the arm,

engages one or other of the steps 12, 13, or W14. The .return of the fork e to its normal Iputs the spacingawl in engagespecification.

The add'tion of the stepping member to the parts of a type-writing machine will-in :no wayaffect the successfuloperation, as in any event some form of stop is required to arrest themovement of the bar Z.

In theoperation the pressure on a key brings the type-lever to an upward position and. at the same time into contact with the universal bar, which it moves and, consequently the frame of the. escapement mechamsm. In printing the letter i the key for that'letteris pressedfwhich moves the universal bar and the frame of the escapement mechanism rearwardly, causing the retainingawl j to enter into engagement with the racl The spacing-pawl 0, which has been in engagement with therack, is carried with the rearward movement of the frame and released from engagement. The spring pull on the bar Znow causes the said bar to slide and throw the pawl 0 outwardly from the 6 frame until'm'rested by the tooth of the dog surface thereof.

to coming into contact with the step t. The release of ressure from the key permits the return of t e universal bar, and the sprin g encircling the rod f insures such return iy forcing the forke to its inward position; ThlS action causesthe spacing-pawl 0' to engage the rack and releases-the retainin -pawl j, leaving the pawl 0 to,be returne travel of the carriage. The step t has per mitted the pawl o to move outwardly from the frame only'to; the extent of one tooth on the rack, so that when the carriage brings the pawl 0 to abut the frame the said carriage has moved the minimum space. The opera- 'tion for a letter of greater width is precisely similar, with the exception that the reater breadth of metal in the le'yer forces t e universal bar, and consequently the frame of the escapemerit mechanism, to a tance rearwardly. This places t e latter so that the step a of the step ing device is in position to e'engaged by t e dog to on the release of the spacing-pawl 0 at the ressure on the key. In order that the toot of the dog w may pass the step t on the return of the-frame inwardly, the s ring permits its outward movement from t e bar Z, and immediately on the said bar l assuming its first.

positionthedog will sprin to its place ready or the next operation. he operation for letters or type of still greater width is exactly the same, as the increase in thebreadth of metal will cause the dog to engage the tooth v. The spring-held dog w is forced outwardly fromth'e bar Z by the ste s t and a in the operation just described an is returned as explained. In order to print articles, conjunctions, or repositions at one operation and from the same type-bar, the step-0r ste s maybe made of greater de th to permit-t e bar Z to move farther on t c release of the spacing-pawl 0. Capitals in the English a phabet, with the exceptionof a few, such as L and Tf re uire the same spaces as the small letters, but in the particular letters mentioned the ca italrequires two spaces, whereas the smal letter requires only one. It has been explain'ed that the step t is reduced to the level of-the step u for one-half of its width, thus making it possible by altering eater disythe- IIO the position of the stepping device through a the rotation of the rod to have the dog w engage the reduced portion of the step t in place of'the step proper. plained in the foregolng description, is used in connection .with theshift-key mechanism. Consequently when a capital letter is required this rod is always operated. In the remainspect, as there is no reduction of level in the The modification illustrated in Figs.- 16 and 17is shown to exemplify how the. device may be applied to anot er form, of escapement mechanism used in the. Und lfwood The rod q, as ex- .ing steps there will be no trouble in this re make the device applicable.

parting from the. changes may' be ma type-writing machine. Injthis particular mechanism the esca ement. is of a rotary character, and the c anges in construction are only slight modifications necessary to erstood that without de-' spirit of the invention e In the construction of It must bef un the stepping devicetogsuit the various constructions of escapement mechanisms, and it" may also be said'in the same connection that the levers operating the universal bar may be any of the intermediate levers between the key and the type, for in numerous machines on the market there is no standard for the position of the universal bar, and this invention has to do particularly with the movement of the said bar bynertain'lever's havingconnection Withthe keys.

The advantages of'the machine are mani festtdevery one accustomedeither to the use- 0f type-Writing machines for receiving copy therefrom, as the spacing throughout will. be much improved and a correct space' may be left for such letters'as m and w as'compa're'd with the letters a and u.

4 'Also it is possible to printconjunctionsfartn 1. In-a type-Writing machine and the like,

7 cles, and p'r'epositions such as and, the,

or, of, and to atthe pressure of one key and have the same spaced off correctly.

What we as our invention is I the combination with a'carriage "having a said stepping specifiedfi constant fpropelling agent, an escapementv 'a'nniversal bar, and a rod jour-,

Ileana: suitable hearings in the frame of the machine and forming part of- :thef shifting mechanism, of'a plurality offsets jof levers actuatijn said universal bar to different distances-o travel for'each set respectively and regulating through said bar the operation of the escapement mechanism, a steppingmemher ri 'dly secured to the aforesaid'rod and exten therefrom. into proximity with the spacing'member of the escapementmechan ism and having the first step thereof reduced for a. portion of itswidth to the-level of the next succeeding step, anda springeheld. dog

pivotally secured to the spacing member of the escapementmechanism and engag ng the member, as and for the purpose 2. In a device of the class described; in

combination,,a carriage having 'a'constant propell'ing a ent, an escapement mechanism controlling t e movement'of said carriage, a

universal bar, a'rod joumaled in suitable bearings in'the'frame offthe machine and forming part of the shifting mechanism, a plurality of sets of levers "actuating saiduni' versal bar to differentdistancesof travel for each set respectively and regulating through said bar the operation of the escapement mechanism, -a stepping member suitably secured and extending into proximity with the spacing member of the .escapement mechanism and having one of its steps reduced to the level of the next succeeding step, and means "attached to said spacii g'hneimberfor engaging each of said steps-at the operation of the key :and lever ,coacting with its particular step, as and for the purposespecified;

'3. ha device of'the' class described, in combination, a carriage having "a constant propelling agent, an escapement mechanism "having a spring-held slidin member, a universal bar moving rearwar yat each operation of a key,--'aj set oflevers actuating said universal bar. tofa requisite distance to oper-. atesaid escapement mechanism, a set of levers actuating'said bar toxaj greater distance than the aforesaid seta stepping memnation with a pluralityof sets of-le'vers,f oper ating-keys therefor and a'universal-bar :vari ably movedby the diflerent'seta-of a spring operated platen: carriage-, ar escapement- Signed' at M ntreatin th treal, in the l fmvinc. of million of'Canad a 101m Elm ra LLOYD 'BLACKMORE. mW l. Bonr'rn- Henenmi Gmcnllensmnem v I 9 4. In a'type-vvritingrnachine, the combi too mechanism therefor operated ariable movement of said bar,';1;an risin .a yielding pawl provi ded "tli ntrol ing member, and afstiepped mam-dug with said pavvlfmeinbei variable feed lot the car ia n; 1' Signed atToronto the-con of'York,

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