US1682330A - Typewriting machine - Google Patents

Description

Aug. 28

heats-Sheet 1 &

i \NVENTORJ MA ATTORNEY G. G. GOING TYPEWRITING MACHINE Flled Nov 4, 1926 G. G. GOING TYPEWRITING MACHINE Aug. is, 1928.

Filed Nov. 4, 1926 3 Sheets-Sheet 2 9 INVENTOR BY b ATTORNEY III WITNESSES Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE.

GEORGE G. GOING, OF MI EDDLETO'WN, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO REMINGTON TYPEWRITER COMPANY, A CORPORATION OF NEW YORK.

TYPEVVRITING MACHINE.

Application filed November 4, 1926. vSerial No. 146,207.

My invention relates to typewriting machines, and more particularly to carriage escapement mechanism and controlling means therefor.

It often occurs that an operator will dwell on the space key, holding it depressed while actuating one or more printing keys,'and vice versa. This operation, in many machines heretofore in use, resulted in hold; ing the carriage against letter feed movement at a time when a feed thereof should be effected by the actuated key or keys. As a consequence characters would be piled, or written one on top of another, or a character would be printed where a space should be provided.

Generally stated, the main object of my invention is to provide an improved means by which this difficulty may be overcome, and to provide mechanism of the character specified which is comparatively simple in construction, reliable and highly efficient in use and which may be manufactured at comparatively small cost.

A further object of my invention is to provide a construction such as is specified above that may be readily incorporated in existing typewriting machines without changing, or materially changing, the structural features thereof, or the escapement mechanism employed therein. i

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

In the accompanying drawings wherein like reference characters designate corresponding parts in the different views,

Figure 1 1s a side elevation, w th parts in section and parts omitted, of a Remington-Noiseless No. 6 machine equipped with the devices of my invention; the view showing the parts as they appear when the space key is held depressed.

Figure 2 is a like view of the same with some of the parts shown in Figure 1 omitted, and illustrating the parts as they appear when a printing key is held depressed.

Figure 3 is a detail side elevation of the actuating connections from the space key to the Universal bar, together with some of the associated parts; the view showing the parts in normal position.

Figure 4 is a detail side view showing some of the parts illustrated in Figure 3 at just about the instant whenthe universal bar, after having been actuated is about to be released from control of the space kev. Figure 5 is a like view of the same showing the-parts as they appear when the space key is held depressed and the universal bar by an independent movement has returned.

to normal position.

Figure 6 is a detail, vertical, transverse sectional view taken on the line'66 of Figure 1 and looking in the direction of the arrows at said line.

Figure 7 is a detail, fragmentary,- top plan view of the carriage escapement de vices.

Figures 8, 9, 10 and 11 are diagrammatic view illustrating the disposition ofthe escapement devices at different stages of the cycle of movements thereof during a single letter space movement of the carriage.

Figure 12 is a fragmentary detail rear view, showing the dog rocker, returning spring therefor and some of the associated parts.

Figure 13 is a fragmentary, diagrammatic top plan view, showing the segmental universal bar and .the coacting actuating devices from a type bar and from the space key by which it is controlled.

I have shown by my invention embodied, in the present instance, in a No; 6 Remington-l oiseless machine in which the invention may readily be embodied with but few changes in the existing structural features .of said machine. Nevertheless, it should be understood that the invention is notrestrictv ed to embodimentin such machine but may be employed in different characters of typewriting machines wherever found available.

The present invention has some of the samegeneral objects'in view as the invention disclosed in my application Serial No. 72,795, filed December 2, 1925, although there are distinct advantages which accrue from the present construction. The claims included herein are restricted to features not disclosed in said prior application.

I have shown in the accompanying drawings only so much of a No. 6 Remingtonlloiseless machine. as is necessary to arrive lllfi of the wheel at an understanding of my present invention in its embodiment therein.

The platen 1 is carried in the usual manner by a case shiftable carriage, comprising end plates 2 and a traverse bar 3 supported on crossed anti friction rollers 4:. The carriage is thus mounted to travel from side to side of the machine under the power of a spring drum 5 connected to the carriage through a pull band '6 and under control of the carriage escapement mechanism.

The escapement mechanism comprises a releasable feed rack 7 that normally en gages a feed pinion 8 carried by a vertically disposed escapement wheel shaft 9. This shaft is mounted at its upper end in a bearing carried by the case shift frame 10 for vertical case shifting movement therewith. The lower end portion of the shaft 9 is grooved longitudinally at 11 where it coacts with anti-friction rollers 12 carried by the escapement wheel 13. The escapement wheel. is supported by a fixed bracket arm 14- so that while the wheel is fixed to turn with the shaft 9, said wheel is supported by its bracket and held against vertical dis placement when the shaft shifts independently with the case shifting movement of the carriage.

The dog rocker 15 is mounted at its ends on pivot screws 16 in arms 17 on the same supporting bracket 18 with the arm 14. A

'forwardly extending arm 19 on the dog rocker carries on the upper side thereof a normally engaged holding dog 20 pivoted at 21 on said arm and forced to normal position, shown in Fig. 7 by a spring 22. When the carriage is returned to the right without disengaging the feed rack 7 the escapement wheel will turnbaclnvard, forcing the holding dog rearward away from the teeth against the force of the spring 22. A stepping dog 23 is pivoted at 2-1 on the under side of the arm 19 of the dog rocker, to receive a limited oscillating movement. This movement of the stepping dog is with the escapement wheel in the direction of its feed and against the force of the light spring 22, and to an advanced position in the opposite direction to which the dog is forced by the spring 22. The means for I limiting the oscillation of the stepping dog 23. comprises a bifurcation 26 in the tail of the stepping dog co-acting with the free end portion of an arm 27 pivoted at 28 on an arm 29 on the dog rocker 15. The pivot 28 adjustable to different-set positions along a slot 30 in the end of the arm 29, to vary the points of arrest of the stepping dog. A returning spring 31 for the dog rocker (see F ig. 12) is connected at one end to a" tension adjusting disk 32 threaded on the left-hand screw 16, and held in its adjusted position by a lock nut The free end of the spring coacts with an off-set finger 34 on the dog rocker. A plate 35 is pivoted on the left-hand screw 16 and extends into the path of movement of the finger 34 on the dog rocker. An off-set car 36 on the plate 35 is tapped to receive a set screw 37. This screw constitutes an adjustable stop that co-acts with the associate arm 17 of the supporting bracket to limit the motion of the dog rocker to normal position.

The escapement mechanism as thus far described is the same as that employed in the Remington-Noiseless i o. 6 machine, and aside from being a substantially noiseless escapement, of the reverse feed variety. That is to say, the carriage is let off for a complete letter space movement on the down stroke of the printing key. Thus, by referring to Figs. 8 to 11 inclusive, it will be understood that on the depression of a printing key, or the space key, the holding dog 20 will disengage from the tooth a. of the escapement wheel and the stepping dog will be moved into the path of the next oncoming tooth b of the escapement wheel. At this time the wheel is free to advanceto the Fig. 10 position, permitting the advance of the escapement wheel and carriage a letter space distance; The return motion of the dog rocker, on the release of the 'depressed key, returns the dogs 20 and 23 to the normal, Fig. 11, position.

I have described in detail this escapement mechanism of the Remington-Noiseless machine in order that the features to be later described of the present invention in their cooperation with such escapement mechanism may be clearly comprehended. It should be understood, however, that any suitable escapement devices, whether of the ordinary or reverse type, may be em ployed in combination with the controlling means which I will now describe.

In the )resentinstancc the escapement is controlled wholly by an actuation of the dog rocker inthe manner described, from a universal bar which is controlled by the printing keys and also by the space key.

The type actions of the machine are of the usual construction employed in the Reinington-Noiseless No. 6 machine, but it is necesto describe them somewhat'in detail and the maner in which the escapement mechanism is controlled thereby, in order to arrive at an understanding of the present invention. In said machine two printing keys are associated with each type bar to selectively actuate it to print from one or another type, depending on the key actuated. For the purpose of the present invention, however, it is merely necessary to consider the operation of the type bar from a single key, which may be either of the associated keys ordinarily employed, it being understood that the operation is the same, so far as the escapement mechanism is concerned,

HHI

lll

for all printing keys. The key lever 38 carries a printing key 39 and is connected through a link 40 with a sub-lever 41. This sub-lever and the associated key lever are limited in their depression by a stop 42. The sub-lever 41 co-acts with an arm 43 of an angular actuating or driving lever 44 pivotally connected at 45 to a momentum accumulator 46, one arm of which is pivoted at 47 to a member 48 of a toggle, the other member-49 of which is'connected at 50 to the type bar 51. The type bar is mounted on links 52 and 56 for movement to the printing position. The lever 44 carries a depending actuating device 54 bifurcated to straddle a curved universal bar 55 and shown in the present construction with considerable lost motion before the universal bar is taken up thereby. This universal bar forms part of a frame pivotally connected to and supported on links 56, 57 and 58. A central depending arm 59 on the universal bar frame is pivoted :to a crank arm 60 on a rock shaft 61. There are two additional arms 62 on the universal bar frame, each pivotally connected at 63 to a crank arm 64 on the rock shaft 61,-and which corresponds to the crank arm 60 but is located near an end of the shaft .61. In this manner .the universal bar is supported for upand down movement for transmitting a rocking movement to the shaft 61. A depending crank arm 65 on the rock shaft 61 is connected to a rearwardly extending link or pull rod 66, the rear end of which passes freely through an opening in a depending arm 67 .on the ;dog rocker. An adjustable nut or contact 66" is threaded on the rear end of the pull rod 66 to transmit its forward pull .to the dog rocker. A lock nut holds the nut 66 in its adjusted posit on.

The dog rocker spring 31 exerts its force to return .the dogrocker, the universal bar and theintermediate connections to normal position.

In actuating aeprinting key it is, we will say, depressed to the limit of its movement, as shown in 2. WVhen the sub-lever 41 reaches the limit of its operating movement, as shown in this figure, the lost motion between the universal bar actuating device 54 and the universal bar 55 will be taken up and the actuating lever 44 will continue its movement by themomentnin of said lever and the parts connected. therewith. This will result in completing the movement of the toggle members 48, 49 to substantially a straight line position, causing the type bar to continue its movement to printing position, as indicated by thedotted line showing in Fig. 2. It is during this movement by momentum of the lever 44 and parts con nected therewith that .thedevice 54 coacts with the universal bar 55 to actuate it and thus operate the escapement mechanism and permit the carriage to receive a letter feed actuating armor member 89.

machine.

movement. It will be understood that this movement of the type bar from the full to the dotted line position in Fig. 2, is so rapidly effected that the imprint is produced before the carriage receives its letter-space step. It also will be understood from what has been said that should an operator hold the printing my 39 down, asshown in Fig. 2, the universal bar, after completing its movement to effect an operation of the escapcment mechanism and a step of the carriage, will return to the normal position shown in said figure, so that said universal bar and the escapement controlled thereby may be actuated indefinitely by the space key. as will presently appear. 4

The saace key 68 is mounted on arms 69 fixed on a rock shaft 70. This shaft is supported at its ends on pivot screws 71 threaded through tapped openings in bracket arms 72. A. rearwardly extending crank arm 73 has anopcning (see Fig. 2) which conforms to the shaft where 1t has its sides slabbedoff near one end thereof, as indicated at .74, in order to fixedly connect .said crank arm to turn with the shaft. The rear end of this ari'n is pivoted at 75 to a link 7 6, which in turn is pivoted at its upper end, at T7, to a lever 78. This lever is pivoted at 79 on the depending portion of a bracket 80. The bracket 80 is secured in place on .tne usual supporting arm 81 by the usual. screw bolt 82 and nut 83 by which the padded stop 84 is secured in place. In order to prevent the bracket 60 from turning on its attaching belt I provide two cars 8O on the bracket 80 which embrace the arm 81 on opposite sides thereof. The outer end of the lever TS has a laterally projecting car 85 perforated to receive freely therethrough an upwardly extending link 86 provided with a nut 87 at the lower end thereof. The upper end of this link is pivoted at 88 to an Referring more particularly to Figs. 3, 4 and 5, it will be seen that this arm has a bearing slot 90 therein for supporting the arm on a pivot pin 91. This pin projects from a bracket 92 secured by rivets 93 and a screw 94 to one of the type action brackets 95 at a side of the While the slot 90 is disposed at an angle to the longitudinal axis of the arm 89 it is, nevertheless, directed lengthwise in the general direction of the length of the arm so that the latter may receive both a pivotal and a longitudinal sliding motion on the pin 91, for purposes which will presently appear. The free end portion of the arm 89 carries on one side thereof an anti friction roller 96. A plate-like arm 97 is perforated to receive the link 86, being limitecl in its upward movement thereon by a swedged part 98 on the link. This arm 97 projects rearward from the link and is con nected to one end-of a contractile spring 99,

.llll

pivoted at 101 on the bracket 92. 100 is provided with an opening 102 into the opposite end of which is connected to the fixed pivot pin 91. It will be seen that by reason of connecting this spring to the link 86 in the manner described, said spring exerts its force to return the arm 89 to normal position in its pivotal movement around the pin 91, and to return the space key and the intermediate connections to normal position. However, in addition to this the spring in question exerts its force to hold arm 89 so that the outer or upper end of the slot 90 will be seated on the pin 91, as shown in Figs. 3 and l. The arm 89 normally overlies a second coacting actuating arm- 100, The arm which projects a stop pin 103 carried by the bracket 92. This stop pin coacts with a side wall of the opening 102 to limit the motion of the arm 100 in one direction, as indicated in Fig. 5. Pivoted to the arm 100 is a bifurcated, universal-bar actuating-device or member 104, similar to those carried by the type bar actuating levers 14, except that, preferably, there is little or no lost motion between the device 1 and the universal-bar.

The operation of these actuating devices from the space key to the universal-bar is as follows When the operator depresses the space key 68, downward pivotal motion is transmitted to the arm 89 from the normal Fig. 3 position to, say, the Fig. 4 position. During this motion the roller 96 engages the arm. 100, turning it to the Fig. 4; position and causing a downward motion of the universal bar which is effective to actuate the carriage escapement mechanism and cause a letter space step of the carriage. The disposition of the parts shown in Fig. 4: is that attained at the completion of the down stroke of the universal bar and just prior to the limitation of the depression of the space key by the usual padded stops 105 which coact therewith, as shown in Figs. 1 and 6. A further extent of depression of the space key to the limit of its downward movement, causes a further movement of the arm 89 to bring the roller96 thereon from the Fig. l to the Fig. position. The effect of this movement is to trip the arm 89 oil the arm 100, permitting the latter, and

me parts controlled thereby, to return to normal position independently of the arm 89. This will be readily understood by a consideration of the line (Z extending through Figs. 3, 4 and 5, and indicating the position of the top edge of the universal bar when it is in normal position.

It will be seen, therefore, that the down stroke of the space key is effective to actuate the universal bar and cause a letter s lace movement of the carriage, and permit t umversal bar and the parts controlled thereby to be'released for independent return movement before the space key has completed its down stroke. It follows, tl1erefore,'that if the operator should dwell on or hold the space key depressed, as indicated in Fig. 1, this does not render the escapement mechanism inoperative from the printing keys, since'the universal bar and the parts controlled thereby are automatically released from control of the space key and returned to normal position after each depression of the space key and may be actuated as often as desired by the printing keys, even though the space key be held depressed indefinitely. Since, as hereinbefore pointed out, the holding of a printing key depressed, as indicated in Fig. 2, is ineffective to hold the umversal bar and the parts controlled thereby in actuated position,

it also follows that holding down any printing key indefinitely does not interfere with the operation of the escapement mechanism its often as desired with the aid of the space rey.

I have hereinbefore explained that the roller 96 is in the Fig. 5 position at the termination of the downstroke' of the space key, while the rollerhaving tripped off the arm 100 permitted-the latter to return independently to normal position, as shown in said figure. Now when the operator releases the space key, the roller 96 will move upward against the flat end 106 of the arm 100, which arm at this time is held against anti-clockwise movement by the'stop .103. The end 106, therefore, at this time remains fixed in an inclined plane where it acts as a cam for the roller96 to act against. The effect of this is. to cam the arm 89 with a swinging and sliding movement to the posltioninclicated in Fig. 5, so that the arm 89 in its return movement may clear the arm 100 and move past it. This sliding camming movement of the arm 89 is effected against the force of returning spring 99. As soon, therefore, as thearm 89 passes. slightly above the dotted line position indi cated in Fig. 5, and is freed'from the arm 100, said arm 89 will be forced by its spring 99 back to normal position, shown in F ig. 3, where the outer end of the bearing slot 90 is seated 011 the pin 91 and roller 9toverlies the arm 100 ready for the next operation by the space key.

While various changes may be made in the construction, and certain features thereof may be employed without others, without departing from ny invention as it is de fined in the accompanying claims, nevertheless from certain aspects it is an important factor of the present invention that I am enabled, with but slightchanges in the existing machines, such as the N o. 6 Reining ton-Noiseless machine, to embody the presout invention therein, even. though the iim tau vention is not restricted to its inclusion in such machines.

What Iclaim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a power impelled carriage, escapement mechanism therefor, a universal bar which alone controls sa'id'escapement mechanism, a printing key, a space key which controls the universal bar, and means that enable said universal bar to be actuated by said printing key to cause an advance of the carriage when the space key is maintained depressed.

2. In a typewriting machine, the combination of a. printing key, a space key, a power impelled carriage, escapement mechanism therefor, a universal bar actuated by the force exerted on said keys by the operator and by which universal bar said escapement mechanism is controlled, and means which enable said universal bar to be actuated by'said space key when said printing key is maintained depressed to the fullest extent of its dip.

3.. In a typewriting machine, the combination of a printing key, a space key, a power impelled carriage, escapement mechanism therefor, a universal bar actuated by the force exertedby the operator on said keys and by which universal bar said escapement mechanism is controlled, means that enable said universal bar to be actuated by said printing key when the space key is maintained depressed, and means whichenable said universal bar to be actuated by said. space key when said printing key is maintained depressed.

4.. In a typewriting machine, the combination of a printingkey, aspace key, a power impelled carriage, escapement mechanism therefor including a dog rocker, a universal bar actuated by the force exerted by the operator on said .keys and by which universal bar said dog rocker lscontrolledto effectanintermittent step-by-step letter-feed of the carriage, and meanscontrolled bysaid print ingand space keys forcontrolling said uni.- versal bar and which enable the universal bar and. dog rocker to be actuated by said printing keywhen said space key is maintained depressed.

5. In av typewriting machine, the combination of a. printing key, a space key, a power impelled carriage, escapement mechanism therefor including a dog rocker, a universal bar by which said dog rocker is controlled to effect an intermittent step-by-step letterfeedof the carriage, and meanscontrolled by said printing and space keys for transmitting the force exerted on said keys by the operator; to said universal bar andwhich enable the universalbar to be. actuated to control the dog rocker by an actuation of either the printing or the space key when the other of said keys is maintained depressed.

6. In a typewriting machine, the combination of'a power impelled carriage, a reverse escapement mechanism therefor aetuate'dat each down stroke of a printingkey or the space key to let-otf'the carriage, a universal bar for controlling said escapement, a type action having a printing key and actuating means controlled'thereby for actuatingthc' universal banand for permitting a return of the universal bar towards normal position while the printing key is maintained depressed, a space key, and means controlled thereby for actuating said universal bar and for permitting the latter to return to normal position while the space key is maintained depressed.

7. In a typewriting machine, the combination of a. power impelled carriage; reverse escapement mechanism comprising a dog rocker, an escapement wheel, a normally engaged holding dog and a vnormally disengaged loose or stepping ,dog carried by said. dog rocker; a, universal bar by Which said dogrocker is rocked; a type action including a printing key, a typeb'ar and actuating 0011-, neetions thatenable the type bar'to move to. andback from. printing. position after the printing key has been arrested at the bot-. tom of its down stroke, certain of saidactuating connections being operatively connected to actuate said universal bar and permit it to return towards normal position while the printing, key is maintained, de-- pressed; a space key; and an operative connection therefrom to saidruniversalbar to, actuate the latter and permit it to, return to normal position ,while the space key is maintained depressed,

8. In atypewriting machine, the combination of a power; impelled carriage, escapee ment mechanismtherefor, a, universal barv by which the escapement is controlled a.

' type action including means that enable the type barand some of its associated actuating parts to return towards normal position while an associated printingkeyis; held depressed, means, controlled by one. of said associated actuating parts for actuating the universal bar, a space key, and. means. forv actuating said universal bar from said space key includingdevices for automatically re.- leasing the universal bar from control of the space key before the latter reachesthe end of its depression, whereby the universal bar is enabled toreturn towards normalposition and be actuated by, the; printingkey while the space key, is maintained{depressed and: the space keyis effective. to' actuate the universal bar when .the printing key is maintained depressed.

9. In a vtypewriting machine, the combination of a power impelled carriage, escapement mechanism therefor, a universal bar by whichsaid escapement mechanism is controlled, a key, and intermediate actuating connections between said key and universal bar including means which cause the universal bar to be actuated by the down stroke of said key and a release of the universal bar from control of said key is automatically effected before the down stroke of the key is completed, said means comprising a pair of arms actuated one by the other, one of said arms being mounted for pivotal movement and the other for pivotal and sliding movement, operative connections between one of said arms and said key, operative connec tions between the other of said arms and the universal bar, and means by which the arm mounted for sliding and pivotal movement will receive such movement in its return to normal position and thus enable it to clear the other arm with which it coacts.

10. In a typewriting machine, the combination of a power impelled carriage, escapement mechanism therefor, a universal bar by which said escapement mechanism is controlled, a key, and intermediate actuating connections between said key and universal bar including means which cause the universal bar to be actuated by the down stroke of said key and a release of the universal bar from control of said key is automatically effected before the down stroke of the key is completed, said means comprising a pair of arms actuated one by the other, one of said'arms being mounted for pivotal movement and the other for pivotal and sliding movement, operative connections between one of said arms and said key, operative connections between the other of said arms and the universal bar, means by which the arm mounted for sliding and pivotal movement will receive such'movement in its return to normal positionand thus enable it to clear the other arm with which it coacts, and a spring which exerts its force on said sliding and pivoted arm to reestablish its normal effective position after it has cleared the coacting arm and render it again effective on the coacting arm when said key is again depressed.

11. In a typewriting machine, the combination of a power impelled carriage, escapement mechanism therefor, a universal bar by which said escapement mechanism is controlled, a key, and intermediate actuating connections between said key and universal bar including means which cause the universal bar to be actuated by the down stroke of said key and a release of the universal bar from control of said key is automatically effected before the down stroke of the key is completed, said means comprising a vpivoted arm having an operative connection with the universal bar to actuate it, a second pivoted arm also mounted for sliding movement on its pivot and cooperative with the first mentioned arm to actuate 1t, an operatlve connection between said second arm and said key, said second arm in its return to normal position coacting with the first mentioned arm to be given a sliding movement which will cause it to clear the first arm, and automatically operating means for sliding said second arm back to effective position after it has cleared the first arm,

12. In a typewriting machine, the combination of a power impelled carriage,escapement mechanism therefor, a universal bar by which said escapement mechanism is controlled, a key, and intermediate actuating connections between said key and universal bar including means which cause the universal. bar to be actuated by the down stroke of said key and a release of the universal bar from control of said key is automatically effected before the down stroke of the key is completed, said means comprising a pivoted arm having an operative connection with the universal bar to actuate it, a second pivoted arm also mounted for sliding movement on its pivot and cooperative with thefirst mentioned arm to actuate it, an opera tive connection between said second arm and said key, said second arm in its return to normal position coacting with the first mentioned arm to be given a sliding movement which will cause it to clear the first arm, and means for holding said first arm against pivotal movement in one direction while the second arm in its return movement is clearing it. y

18. In a type'writting machine, the combination of apowerimpelledcarriage, a printing key, a space key, a universal bar, escapement mechanism controlled thereby, means controlled by said printing key for trans mitting the force exerted thereon by the operator to said universal bar to actuate it and for enabling the universal bar to return to normal position while the printing key is maintained depressed, whereby the universal bar and escapement mechanism may be actuated by the space key while the printing key is maintained depressed, and means controlled by said space key for transmitting the force exerted thereon by the operator to said universalbar to actuate it and for enabling the universal bar to return to normal" position while said space key is maintained depressed, whereby said escapement mechanism may be actuated by a printing key while said space key is maintained depressed. a

14. In a typewriting machine, the combination of a power impelled carriage, a type bar, a printing key, type bar actuating devices controlled thereby to transmit the force exerted by the operator on said key to the type bar and which enable the type bar to continue independently its motion to printing position after the down stroke of the printing key is arrested and to recede from printing position while the printing key. is maintained (repressed at the lowest point of its dip, carriage escapement devices, a universal bar for actuating said escapement devices, a space key, means transmitting the force applied by the operator to said space key to said universal bar to actuate it, and

' means controlled by said independent continned movement of the type bar for actuating the universal bar, whereby the universal bar after being actuated by the printing key may return to normal position while the printing key is maintained depressed and be actuated by the space key.

15. In a typewriting machine, the combination of a power impelled carriage, escapement mechanism therefor, a space key, and trip-oil connections between said escapement mechanism and space key and by which pressure exerted on said key is transmitted to said escapement mechanism during the down stroke of the key, said trip-off connections including an actuating member mounted for pivotal and sliding movement, the member being held against sliding movement during the down stroke of the space key and having a sliding as well as a pivotal movement during the return of said member so as to avoid actuating the escapement during such return movement of said member.

16. In a typewriting machine, the combination of a power impelled carriage, key levers, printing keys carried by said levers, type bars actuated by theforce exerted on said printing keys, actuating connections intermediate said key levers and type bars that enable a type bar and certain of its said intermediate actuating connections to continue with an independent movement after the associated printing key reaches and is maintained at the lowest point of its dip, a universal bar controlled by the said independent movement of a part of the intermediate actuating connections of each type bar, a space key, and intermediate actuating connections between said space key and the escapement mechanism including a trip-off mechanism that enables the universal bar to be actuated by a printing key while the space key is maintained depressed and which includes an actuating member mounted for pivotal and sliding movement, said member being held against sliding movement during the down stroke of the space key and having a sliding as well as a pivotal movement during its return to normal position.

Signed at Middletown, in the county of Middlesex and State of Connecticut, this 1st day of Nov., A. D. 1926.

GEORGE G. GOING.

Images