US1809552A - Typewriting machine - Google Patents

Description

' G. G. GOING TYPEWRITING, MACHINE Filed Jan. 20, 1930 vI N VE NTO R Jv $1 BYWJA/Q'fim ATTORNEY mm wm WITNESSES fiTA TES GMRGE G. WING, QF GLENBROOK, CONNECTICUT, ASSIIGIN'QE TQ REMINGTON TYPE WRITE COEEZPAIW, 0F ILION, NEW YORK, A CQRPQM'EION OF NEW YQR'E.

TYPEWRITING application filed January 2Q, 1939. l fe. EEPBBW,

My invention relates to typewriting and like machines and more particularly to the type actions thereof.

The main oloj ect of my invention, generall stated, is to provide extremely simple and er fective means for controlling the movements which may he employed in standard typewriting machines without materially moditying the existing structural features thereof.

To the aloove and other ends which will hereinafter appear my invention consists in the features of construction, arrangements of parts and combination of devices set forth in the following description and particularly pointed out in the appended claims.

in the accompanying drawings wherein like reference characters indicate corresponding parts in the difierent views- Fig. l is a fragmentary, detail, central, vertical, fore and aft, skeletonized sectional View of a machine embodying my invention, only so much of the machine being shown as is necessary to illustrate my invention in its embodiment therein.

Fig. 2 is a detail, fragmentary front view of some of the parts.

Fig. 3 is an enlarged, detail, fragmentary, vertical sectional view taken through the pivotal axis of the momentum accumulator.

Fig. 4 shows in perspective and detached, the type loar center guide and the parts carried thereby.

The present invention is in the nature of an improvement on the construction disclosed in lly Patent No. 1,615,694, dated Jan. 25, 192 i The type actions re presented are conven tional ones, except for slight modifications oil each type her, as will presently appear.

As shown each key lever l is pivoted at 2 and provided with a finger key 3. There is,

or may he, the usual full complement of fortytwo key levers, each controlling a separate type lea-r, Thus, each key lever is connected at 4. to one arm ofa sub-lever 5 mounted to turn on a fixed pivot wire 6 carried by a slotted supporting her 7. The upright arm of each sub-lever carries a pin 8 that works in a cam slot 9 in the heel of the associated type bar 10, said. arms being progressively longer as the sides of the system of type hers are approached.

The segmentally arranged typo hare are pivoted on a pivot wire ll carried by a slotted type har segment 12, each type har worhing'in a separate radially disposed slot 313 in the segment and carrying two types it) and it). The free ends of the t pe hare are normally supported on a padde type har rest or support 14:. The type bars are bent laterally their type-carrying ends at 15, the anglularity of the bent portions relatively to t e bars increasing as the sides of the system are approached, as usually provided in order that each type block 10 may be, disposed in the same tore and aft vertical plane -when in-the printing position, and as indicated in dotted lines in Fig. 2,

From Fig. 2 it will be seen that, as isusu'al in such constructions, the planes of movement of all of the type hars, intermediate their pivots and the hepds therein, converge below the printing line, saidpoint of con vergence corresponding to the line 15 of the bend in each type bar when in printing position.

lnthe present instance li provide the usual type bar center guide, indicated as a whole. hy the reference numeral 16 and which is se cured by screws 16* to the type bar segment. This type guide has guiding jaws 17' with air till

which a contact portion 18 on each typeba r coacts to direct the bar to printing position in the usual manner. I

I provide a single controlling memher or momentum accumulator, indicated as a whole hy the reference numeral 19 and shown detached in i e. 4%.. This member is located in front or t e platen 2G helow the printing line and e, .de in the path of and is actinated by controls each type her as it approaches the printing-position; to sheet a slowing down oi. the actuated bar and dial of said member 19 on the bar to efiect su 'antially anoiseless pressure imprint. I prefer to pivot the member 19 belowthe printing line on the type bar center guide and to so construct, arrange and mount said member 19 that it will not obstruct the operators view of the exert the stored ener printing line or the writin As shown more clearly in Fig; 4 the momentum accumulator or controlling member 19 comprises, in,,the present instance, two parallel side armsor members 21 shaped alike and fixedly united and maintained spaced apart by connecting rods 22 and 23. The distance that these members 21- are spaced apart corresponds substantially to the width of the upright supporting arm of the type bar center guide 16, so that a member 21 may be located on each side of the center guide and swing relatively thereto. Each of the members 21 is pierced intermediate its ends at 24 to receive a pivot for pivotal support on around the sleeve 27 and is anchored at one end in an opening 32 in the head 28 of said sleeve. The other end of the spring is secured in a hole 33 in one of the members 21. The force of the li ht spring'31- is exerted to return the contrcfilin member 19 to normal position and is su cient only. to attain this result, and without materially affecting the actuating movement of said member in conjunction with a type bar. The parts 27-28 and 29 not only constitute means 'coacting with one of the members 21 for pivotally mounting the controlling member 19, butalso constitute adjustable means whereby the efiective force of the spring 31 on said member may be varied. Thus, by backing up the screw 29 clampin pressure on the sleeve 27 is releasedan'd said sleeve with the aid of its head 28 may be turned in one direction or the other to increase or decrease the effective force of the springfi31, as may be desired.

withwhich each type bar coacts in itsiap= proach to the printing position to set the momentum accumulator 19 in motion. When the member 19 is in the normal dotted-line position shown in F i 1, the contact 22 is maintained in the pat of'a cam slot 35 in each type bar of a width corresponding substantially to the diameter of the contact. As a type bar reaches the dotted-line position in Fig. 1, the contact 22 will first coact with the bottom wall 36 of the cam slot and the continued motion of the bar will cause the member 19 to be turned by a cammin action thereon to the full line position. en the contact 22 enters the cam slot in a type bar there is established an interlocking connection between the controlling member and type bar. The efiect therefore, when a type bar reaches the controlling member is that said type bar is slowed down in the act of picking up and actuating said member. Due to the interlocking connection between the two the stored energy in the controllin member or momentum accumulator will be exerted on the connected typebar' at the last partof its printing stroke and a substantially noiseless pressure imprint will be effected. .It will be seen that this pressure by the member 19 is exerted on each type bar between the bend ,15 therein andthe outer free end of the bar and near the types thereon in the direction of the axis of the platen, and

where pressure on a pivoted type bar is most efiicaciously applied. ,This is especially true when bent type bars are employed, since to apply pressure intermediate the bend in each type bar and its pivot tends to efiect a crank ing or off-set force on the bar and throw the type off their feet when such pressure is applied after the type bar reaches the platen. The present construction overcomes this difficulty and applies pressure from the member 19 near the type-carrying end of the type bar where such pressure is most efiective, without, nevertheless, interfering with the operators line of vision of the printing line.

The movement of each type bar under control of its key is unrestrained until it reaches the dotted-line Fig. 1 position when it picks up the member 19 and after it has acquired its highest speed. Therefore no resistance due to the operation of the member 19 is felt by the operatoron the fin er key, since ordinarily, the-finger key will have been released by the operator by the time the type bar reaches the dotted-line position.

In order that the member 19 may normall be held in position where its contact 22 wi i enter the cam slot 35 on any actuated ty bar, ll have rovided means itor arresting t e member 19 in its return to normal position. Any suitable means may be employed for this purpose. In thepresent instance ii rovide a stop bar 37 secured to and exten ing beyond the sides of the type bar center uide 13 in the path of return movement a? the asoassa member 19, and where the edges 38 thereof will coact with the projecting ends'of the bar 37 to efi'ect an arrest of the member 19 under the reaction of its spring 31,

In order to reduce or prevent any appreciable noise by the member 19 being arrestedin its return movement by its stop 37 1 pro: vide suitable sound deadening features. Such features in the present instance comprise a very light leaf spring 39 secured at its center to the type bar guide 16 between the latter and the stop bar 37. The free ends of this spring extend in front of and normally project Iorward from and out of contact with the projecting ends of the stop bar 37, llfhe free end portions of this s ring project into the path of the edges 38 o the member 1%), and as the latter returns to normal position will compress the sprin against the stop bar 37 and arrest the mem er 19 with little or no noise. It should be understood that the thickness of the spring 39 is exaggerated in the drawings and that in practice is very light and is insufficient to overcome the slice tive force of the spring 31, which also is a very light spring,

From the foregoing description it will be understood that l have provided simple and efiective means, which may be readily employed in standard typewritinw machines without materially changing t e existing structural features thereof, for slowing down the movement of each type bar as it ap-- proaches the printing point and cheating susstantially a noiseless pressure imprint.

Various changes may be made in the con struction, and parts thereof may be employed without others, without departing from my invention as it is defined in the accompanyin claims,

l fhat 1 claim as new and desire to secure by Letters Patent is 2 i. The combination of a platen, a series or pivoted type bars, kc controlled means for actuating each type er, and means for slowing down the movement of each type bar as it a proaches the printing point and effecting su' stantially a noiseless pressure imprint, sald means comprising a single momentum accumulator arranged below the printing point and in the path of the type-carrying end portion of each type bar to be actuated thereby, and means by which the energy of the momentum accumulator thus actuated is exerted on the actuated type bar at the last part of its printing movement to efiect substantially a noiseless pressure imprint against the platen-or the paper thereon,

2. The combination oi a platen, a series of pivoted type bars, key controlled means for actuating each type bar, and means for slowing down the movement of each type bar as it approaches the printing point and efilecting substantially noiseless pressure imprint,

said means comprising a single momentum ac cumulator arranged below the printing point and in the path ofthe type-carrying end portion of each type bar to be actuated thereby, and means by which an interlocking connection between each type bar and said momentum accumulator is automatically eiiccted so that the energy of the latter is exerted on the actuated thereby, and means-by which the energy of the momentum accumulator thus actuated is exerted on the actuated type bar at the last part of its printing movement to effect substantially a noiseless pressure imprint against the platen or the paper thereon, said last mentioned means comprising a pin and slot connection between each actuated type bar and the momentum accumulator brought into efl'ective engagement as such type bar approaches the printing position,

i. The combination of a platen, a series of pivoted type bars, key controlled" means for actuating each type bar, and means for slowing down the movementof each type bar as it approaches the printing point and efiecting substantially a noiseless pressure imprint, said means comprising a single momentum. accumulator arranged inv the path of each type bar to be actuated thereby, an engaging portion carried by said momentum accumulator, and each type bar having a slot in which proaches the printing point and effecting substantially a noiseless pressure imprint, said means comprising a single momentum accumulator arranged in the path of each type bar to be actuated thereby, and an engaging pin carried by said momentum accumulator and which is received in said cam slot in an actuated type bar as" the latter approaches vwing position, whereby said momentum accumulator may be gradually set in motion by a type bar and an interlocking connection between the actuated ty e bar and the momentum accumulator is e ected and 'momentum accumulator and with which the said cam on each type bar coacts as the latter approaches the prmting position, whereby the momentum accumulator may be actuated by a type bar with a camming action.

7 e combination of a platen, a series of pivoted typebars, key controlled meansfor actuating each type bar, and means for 'slow ing down the movement of each type bar as it approaches the printing point and efi'ecting substantially a noiseless pressure imprint,

said means comprising a single momentum accumulator mounted to turn on a fixed-pivot below the printing point and-in the path of each type bar to be actuated thereby and having a contact member with which an en aging portion .on each type bar interme iate the ends thereof coacts, the stored ener y of the actuated momentum accumulator oing exerted on the actuated type bar at the last;

part of its printing stroke.

8. The combination of a platen, a series of pivoted type bars, key controlled means for actuatingeach type bar, and means forslowing down the movement of each type bar as it approaches the printing point and efiecting substantially a noiseless pressure imprint, said means comprising asin le momentum ac- I cumulator pivoted interme iate its ends on a fixed portion of the machine below the printing point and having at its upper end a contact member with which a portion of each type bar intermediate its ends coacts as the actuated type bar approaches the printing sition, said momentum accumulator havmg a weighted portion at its lower. end.

9. The combination of a'platen, a series of pivoted type. bars, ke controlled means for actuating each type er, and means'for side arms pivoted intermediate then ends slowing down the movement of each. type bar as it approaches the printing pointand etfecting substantially-a noiseless pressure imprint, said means comprising a single momentum accumulator having two united parallel to turn on a fixed support and having a contact pin between said arms-and with which each of the type bars coaets movement to printing position.

10. The combination of a platen, a series of pivoted typebars, key controlled'me'ans for actuating each type bar, and means for slowing down the movement of each typebar as it approaches the printing point and effecting substantially a noiseless pressure imprint, said means comprising a single momentum accumulator having two united parallel side arms ivoted intermediate their ends to turn on a xed support and having a contact pin between said arms, each type bar having a cam slot in which said contact pin is received as a type bar approaches the printing position.

11. The combination of a series of pivoted type bars each having a cam slot therein, and a single momentum accumulator in the path of all of said type bars and actuated by each of them, said momentum accumulator having an engaging portion received in the cam slot in anyof said type bars as it approaches the printing position, whereby the momentum accumulator may be actuated by any type bar with a camming action and the stored energy of the momentum accumulator will be exerted on the actuated type bar at the last part ofits printing stroke to effect a substantially noiseless pressure imprint.

12. The combination of a series of pivoted type bars, a momentum accumulator in the path of and actuated by each of said type bars and exerting its stored energy on each type bar to efiect substantially a noiseless pressure imprint, said momentum accumulator consisting of .a single member pivoted below the rmting point and normally disconnected irom the type bars, and means for bringing each type bar at the last portion of its printing movement into interlocking working eng'a ement with said momentum accumulator an the latter exerting its stored energy on the tygie bar near its type-carrying end thereo 13; The combination of a platen, a series of tgpe bars that are provided with lateral ben s where they converge at a single point below the print i cumulator arranged in front of the platen and in the, path of said type bars and by which each type bar is applied with a substantially noiseless pressure imprint, means on each type bar intermediate the bend therein and the free end thereof for engaging and actuating the momentum accumulator and causing it to exert its stored energy on the engaged type bar. a

M... The combination of a series of type bars that are provided with lateral bends where the converge at a single point below the print ine, a single momentum accumulator" arranged in front of the platen and in the path of said type bars and by which each type bar is applied with a substantially noiseless pressure imprint, and a slotted cam on each type bar intermediate the bend therein and the free end thereof for interlockingand engaging and actuating the moment accumulator and causing it to exert its;

ne, a single momentum acstored energy on the engaged type bar at the last portion only of its printing stroke.

15. The combination of a series of type bars that are provided with lateral bends where they converge at a single point below the print line, a center guide for the type bars which coacts with each of them intermediate with said momentum accumulator,

the bend therein and the free end of the bar, a single momentum accumulator pivoted on said type guide and arranged in the path of the typebars to be actuated thereby, and means on each type bar intermediate the bend therein and the free end of the bar for efi'ecting an interlocking actuating engagement whereby the latter is effective at the last portion'of the printing movement of each type bar to slow down its movement and cause the stored energy of the momentum accumulator to be exerted on the engaged type bar near the type-carrying end thereof and effect substantially a noiseless pressure imprint.

16. The combination of a series of pivoted type bars each having a slotted cam therein,

cumulator is efiected and the stored energy of the latter is transmitted to the connected type bar, arresting means for limiting the return movement of the momentum accumulator to normal position ready to coact with said slotted cam on each type bar,a spring for returning. said momentum accumulator to normal position, and adjustable means for vary ing the effective force of said spring. A

Signed at Stamford, in the county of Fairfield and State of Connecticut, this 18th day of January, A. D 1930.

GEORGE G; GOING.

key controlled means for actuating each type I an engaging pin carried by.

tion between the actuatedtype bar and the momentum accumulator is e ected and the stored energy of the latter is transmitted to Y the connected type bar, arresting means for' limiting the return movement of the momentum accumulator to normal position ready to coact with said slotted cam on each type ar,

and a spring for returning said momentum accumulator to normal position.

17. The combination of a platen, a series bars each having a slotted y controlled. means for acand means for slowof pivoted typie cam therein, e tuating each type bar, ing down the movement it approaches the'printing point and effectin substantially a noiseless pressure imprint, said means comprisin a single momentum accumulator arranged in the path of each .type bar to be actuated thereby, an-

engaging pin carried by said momentum accumulator and which is received in said cam slot in an actuated type bar as the latter approaches the printing position, whereby said momentum accumulator may be set in motion by a type bar with a camming action and an interlocking connection between the actuated type bar and the momentum acof each type bar as

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