US1590511A - Typewriting machine - Google Patents

Description

Fig. 1 and Patented June 29, 1926.

UNITED STATES JOSEPH B. HOLDEN,

1,590,511. PATENT OFFICE.

F SYRACUSE, NEW .YCRK, ASSIGNOR TO REMINGTON TYPE- WRITER COMPANY, OF ILION, NEW YORK, A. CORPORATION OF NEW YORK.

rrrnwnrrms MACHINE.

Application filed September 8, 1923. Serial No. 661,618.

My invention relates to carriage feeding or escapement mechanism for typewriting machines, and its object is to provide new and improved mechanism of the character stated. More specifically, the object of my invention is to improve in certain respects the escapement mechanism of E. E. Barney disclosed and claimed in his application Sr. No. 659,116 filed Aug. 2 1, 1923, my improvements resulting in increased accuracy of operation of the escapement mechanism.

To the above and other ends which willhereinafter appear, my invention consists in the features of construction, arrangements of parts, and combinations of devices hereinafter described and particularly pointed out in the claims.

In the accompanying drawings which illustrate the preferred form of my invention applied to a Smith Premier No. 60 typewriting machine,

Figure 1 is a fragmentary side elevation partly in section showing the train of connections between the key operated universal bar and the escapement dog rocker, together with associate parts.

Figure 2 is a fragmentary rear elevation showing some'of the parts of Fig. 1.

Figure 3 is a view corresponding to Fig. 1 but showing the parts in operated positions.

Figure 1 is an enlarged detail view, and

,Figure is a side elevation partly in section showing the mounting of the spring for restoring the universal bar and oscillator.

The Smith Premier No. 60 typewriter employs a set of type bars arranged in an arc of a circle and normally horizontally disposed below the platen 1, with the front face whereof said type bars co-operate. One of the middle typebars of the set is shown in the present case, said type bar being numbered 2. The set of type bars are mounted on a common arcuate pivot wire 3 which is supported on a vertically disposed segmental type bar support 4 formed with radial slots, in each of which one of the type'bars is arranged and guided. Rigid with the segment proper is a supplemental or guide frame 5. the segment l and the frame 5 being adapted to be shifted vertically on the main frame of the machine to change case. The lower case position of the seg ment at and frame 5 is illustrated in full lines the upper case p esides. by

dotted lines, key operated devices not shown herein being employed to shift the segment a and the frame downward for upper case. At their free ends the type bars are supported on a rest 6 which is connected with the shiftable segment and frame and shifts downward with them, the relationship of the type bars on their support consequently remaining the same in both shift positions. The heel of each type bar is connected by a rearwardly extending link 8 with the upper end of a lever 9, the parts 8 and 9 being elements of the key operated train for ac tuating the type bar. Close to its pivot 3 each type bar is provided with a contact face 2 which is adapted to co-operate with the front edge of a vertically disposed curved or arcuate universal bar 10 arranged in an arcuate groove indicated at 11 formed in the rear face of the type bar segment. Guide devices for the universal bar comprise apin 12 carried by an extension 13 from the universal bar and engaging in a guide opening 14 in the segment. At its sides, the universal bar rearwardly extending arms 15, each pivotally connected at 16 with the forked or bifurcated upper end portion of a crank arm 17, said crank arms extending upward from a rock shaft 18. The arms 15 fit loosely'be- 10 is provided with tween the bifurcations in the arms 17, each pivotal device or pin 16 bridging the associate fork and passing loosely through the arm 15. The rock shaft 18 is pivoted at its ends on coned screw pivots 19 supported by arms 20 secured to the frame member 5, check nuts 21 holding the screw pivots in adjusted positions on said arms. Rising from one end portion of the rock shaft 18 is an arm 22 carrying at its upper end, a

lateral screw 23 to which is secured the rear end of a coiled spring 24:. The front end portion of said spring is anchored to the part 5, preferably in the following manner, said spring has secured within it a flanged nut 25 which receives a long screw 26 that projects rearward through an opening in the part 5 (Fig. 5). The head 27 of the screw 26 is adapted to slide in a hole 28 in the segment, the rear end of said hole being reduced so as to prevent passage therethrough of the head 2'( while affording free movement of the shank of the screw. The construction is such that the tension of the spring 2 1 may reaaiiy be varied by apply ing a tool. to the nick of the screw through the hole 28 and turning the screw in or out to move the nut longitudinally thereof thus stretching or compressing the spring 24: as may be desired. It will be understood that the universal bar frame 10, 15 and the oscillator or support 17, 18 participate in the case shifting movements of the type bars, the segment l and the member 5, as indicated by dotted lines in Fig. 1.

Instead of connecting the push link or connector directly with rigid arm on the rock shaft of the oscillator as in the appli cation of Barney aforesaid I provide an improved form of connection which has the advantage of affording fine adjustments a feature which has been found highly desirable in practice. In carrying out this part of my invention there is provided an arm 29 which is fixed to or formed integrally with the rock shaft at about its middle and extends upward and rearward therefrom terminating in rearward horizontally disposed extensfon 29 Pivotally supported on the rear end of this extensionas by aloose rivet 30 is an angular plate 31 formed with a downward extension provided with an arcuate slot indicated at 33 and struck from he pivot 30 of the plate 31 as a center. The forward end of the plate 31 carries a stud or headed pin34. The slot 33 receives a headed screw 35 which is threaded into the side of the arm 29, a washer 36 being interposed between the i ead of the screw 35 and the face of the plate 31. It willibe apparent that when the screw 35 is tightened, the plate 31 is held in fixed relationship with the arm 29 29, and that by loosening the screw the slate ma be swun u) or down on its pivot 30 thus varying the position of the stud or pin sash-e1- which the plate may be reclamped by the clamping means or screw The adjustable stud 34; is engaged by the forked forward end of a link or connector 37 which extends rearward and is also forked or bifurcated at its rear end, the rear bifurcations cooperating with a circular groove 38 formed in a stud 39 fixed to and projecting laterally from the lower end of an arm or member 10' loosely mounted on a horizontal rock shaft al extending transverse y of the machine. The ends of the reel: shaft are countersunk to accommoof set screws 48 mat secure the dog rocker to the rock shaft 11. It will he observed from Fig: 2 that the rocker abuts the arm and that the stud 39 projects from said arm inward under the dog rocker; This gives a compact construction avoiding interference with certain of the tabulating mechanismof the machine. The m mber or arm &0 has an extension 40 above the rock shaft 10, which'e'Xtension is thinner than the lower part of the arm and is formed with a tapped hole which receives threaded memher or nut 49 having a hexagonal head 50 and abutting at its inner end against the rear face of a lug that is integral with the rocker arm as, (F Passing loosely The through a hole 51' in the nut 4.9 is a headed screw 52, the forwardeiid of whi'cli'is threadthe arm or member 1O, 40 in fixed relationship with the router and prevents said arm shaft 4'1. 111g the screw 52 the nut may be threaded d to the hexagonal Lead and thereafter screw 52 may be tightened to force the inner end of the nut to abut tigl'itly aq alnst the lug 45 The construction affords means for varying the angular posit n of 11323111 or me vic rig improved means forva'rying oradf usting the location of the stud 39 with which forward end of the screw projects through and beyond alug 15 and acts in c'o-operato limit the forward movement of the dog rocker; ba d rocker is maintained in its a restoringspring 7 54. Mounted on the rocker arm 15 and pro ecting abore the same the construction disclosed in the Barney ap phca'tion aforesaid, said dogs co-opcrating mentarily shown in Fig. 1, said wheel being connected with the carriage as in the Pvmith It will be understood that when one of the type bars is actuated to print, its constroke Contact with the universal bar 10. moving lt rearward and swinging the oscilstufd 3% to moverearward about-the axis :nt of t e ed throu Q1 the lug 15 The screw holds from turning on the Y By: loosenin or out by means of a tool applt' mac, 40 on its shaft 11 thereby prothe' push link or connector 37 engages.

tion with a normal position against the usual stop by are escapement dogs 55 and'ofipreferahly of with an escapenient wheel 57 which is frag- PremierNo. 60 machine. l

taet fa'ce 2 will towards the end of the lator 17 18 on its pivotal axis, causing the 19 of the oscillator. This move stud will be transmitted tl1fOL1 i1 the linl 37 to the stud 39 at the lower end of file arm i-O thus rocking the shaft 1-1 and actuating the dog rocker, swinging the arm 45 thereof forward until its screw contacts with the stop 53. The parts at this time will be in the position illustrated in On releasing the printing l the parts will be restored to normal position; the spring 24 assisting to restore: the oscillator and the stop lug 53 on the bracket 13 universal bar, the dog rocker being restored by its spring 5%. t will be observed tl at with the parts in lower case and normally related as shown by full lines in Fig. 1, the link or connector 37 is inclined upward from the rear towards the frontat an angle to the horizontal. When the shift key is actuated for upper case, the segment a and shift frame 5 together with the type bars, universal bar frame 10, 15 and oscillator 17, 18, will be moved bodily downward to upper case position. As the stud 34 shifts downward, it will swing the link 3'? downward about the stud 39 as a center, said stud not being affected by the shaft. The shifted position of the link is illustrated in dotted lines in Fig. l, the link being swung to an angle below the horizontal corresponding with that from which it started above the horizontal. My improved construction affords means for adjusting the parts with great nicety so that this angular swing from above to below the'horizontal may be accurately obtained. It will be apparent that if the stud 3a is too high it may readily be lowered and reset by loosening the clamping screw 35 and swinging the plate 31 downward on its pivot 30 to a suliicient extent and then reclamping. ()n the other hand if the stud is too low, it may be reset higher by swinging the plate upward and tightening the screw. Also it will be seen that the let-off of the escapement may be accurately adjusted by varying the setting of the arm 40, 40 and thus changing the relationship between the two studs 3a and 39, which are connected by the link 37, the timing depending upon the relationship of the motion transmitting device or stud 3a to the stud 39 or device to which motion is transmitted.

It will be observed that by my present invention there is provided a driving member, namely, the oscillator 17, 18, a driven member, namely, the dog rocker element comprising the rocker proper and the part 4.0, and a link, as 37, directly connecting the driving and driven members, which members are relatively shiftable as when the case shifting operation takes place, combined with adjustable means for insuring a substantially uniform transference of motion through the link in both case shift positions; and that in the present instance the means aforesaid comprises the adjustable plate or link carrier 31 and means for clampingthe same in different set positions.

Various changes maybe. made without departing from my invention.

hat I claim as new and desire to secure by Letters Patent is 7 1. In a typewriting machine, the combination of a shiftable universal bar, a dog carrier independent of case shiftin ove A l :3 o ments, connections between universal bar and said dog carrier comprising a link, means for varying the points of connection of'said link with its associate parts, said means comprising a pivoted plate, and meansforclamping said plate in invariable positions.

2. In a typewriting machine, tion of a shiftable universal bar, a dog carrier, independent of case shifting movements, c nnections between said universal bar and saic dog carrier comprising a link, means for varying the points of connection of said link with its associate parts, said means comprising a pivoted plate, and means for clamping said plate in invariable positions, said'plate and the end of the link connected to it participating in the shifting movements of the universal bar.

3. In a typewriting machine, the combination with a platen and a type bar segment relatively shiftable to change case, of a universal bar shiftable during the case shifting operation, a dog carrier independent of said case shifting operation, an oscillator supporting said universal bar and participating in case shifting movements, a link connecting said oscillator with said dog carrier, and adjustable means for insuring uniform action of said link in both case shift positions.

l. In a typewriting machine, the combination with a platen and a type bar segment relatively shiftable to change case, of a universal bar shi table during the case shifting operation, a dog carrier independent of said case shifting operation, an oscillator supporting said-universal bar and participating in case snif 'ng movements, a-partrigid with said dog carrier, a link pivoted at one end to said oscillator and at the opposite end to said part, one end of said link shifting during the case shifting movement, and means for varying the normal position of said link so as to vary also its position at the end of the case shiftingmovement.

5. In a typewriting machine, the combina tion of a platen, a type bar segment shiftable to chang case, an oscillator shiftable with said segment, a universal bar supported by said segment and by said oscillator and shiftable therewith, said universal bar being operative by the type bars of the machine and being adapted to actuate said oscillator, a dog rocker, a part rigid therewith, a link pivotally connected to said part at one end, a link ca rier with which the opposite end of said link is pivotally connected, and means for variably securing said link carrier in rigid relationship with said oscillator.

6. In a typewriting machine, the combination of a universal bar, a dog carrier, an oscillator to which said universal bar is connected, a stud adjustably supported on said oscillator, and a link engaging with said stud and connected. to said deg carrier,

the combina- 7. In a typewriting machine, the combinacillator to which said universal bar is con nected, a plate pivoted on said oscillator, a

device carried by said plate, means for at fording adjustment 01 said plate, and a link connected both to said device and to said dog carrier.

8. In a typewriting machine, the combination of a universal bar, a dog carrier, an oscillator to which said universal bar is connected, a plate loosely pivoted to said oscillator, an engaging device carried by said alate, a clamping screw for variably clamping said plate to said oscillator, and a link engaging with said device and connect d to said dog carrier. 7

9. In a typeivriting machine, the combination of a curved universal bar, a type bar directly operating said universal bar, a pivoted oscillator by which said universal bar is: supported, a slotted plate loosely pivoted to said oscillator, a stud on said plate, a clamping screw engaging the slot in said plate, a dog carrier, and a link pivoting on said stud and connected to said dog carrier.

10. In a typeivriting machine, the combination of a universal bar, a rock shaft, a dog carrier secured to said rock shaft,an arm loosely pivoted on said rocl; shaft, means "for adjustably securing said arm in fixed relationship with said dog car i r, and connections between said universal bar and said arm; 7 11. In a typewriting machine, the combination of a universal bar, a rock shaft, a dog carrier secured to said rock shaft, an arm loosely pivoted on said rock shaft, means for adjustably securing said arm in fixed relations 1) with said do carrier a studl a a and a link having its ends engaging said stud 12. In a typeivriting machine, the combi,'

nation of a universal bar; a rock shaft; a dog carrier secured to said rock shaft; an arm pivotally mounted on said rock shaft; means for adjustably securing said arm in fixed relationship with said dog carrier, said means comprising a nut threaded into said a1 a and adapted to abut against a part of said dog carrier, and a screw passing loosely through said nut and into said dog carrier for holding said nut in lined position; and connections between said universal bar and said arm.

1%. In a typevvriting machine, the combination of a vertically disposed curved universal bar adapted to be operatedv directly by the type bars of th machine, a pivotally supported oscillator to wl ic-h said universal bar is pivotally connected, a'linl: extending rearward from the oscillator near its midjd-le, a rock shaft, a dog rocker detachably secured to said rock shaft, an arm supported on said rock shaft at one side of said dog rocker, and an engaging device cooperating With said link, said engaging device being carried by said arm and extending inward beneath said dog rocker.

Signed at Syracuse, in the county of On ondaga, and State of New York, this 4 day of Sept, A. D. 1923.

Josnrn B. HOLDEN,

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