US1162434A

US1162434A - Type-writing machine.

Info

Publication number: US1162434A
Application number: US55696410A
Authority: US
Inventors: Nils H Anderson
Original assignee: NOISELESS TYPEWRITER CO
Current assignee: NOISELESS TYPEWRITER CO
Priority date: 1910-04-22
Filing date: 1910-04-22
Publication date: 1915-11-30
Anticipated expiration: 1932-11-30

Description

.N. H. ANDERSON. "TYPE WRITING MACHINE.

1 APPLICATION FILED APR. 22. 1910.

Patented Nov. 30

WITNESSES:

' \Vriting hlaclunes, of which UNITED STATES PATENT orries.

NILS H. ANDERSON,

CONNECTICUT.

or MIDDLET WN, CONNECTICUT. Ari-SEIKO TYPEWRITER COMPANY, OF MIDDLETOWN, CONNECTICUT. A CORPORATION TO THE NOISELESS or TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Nov. 30, 1915.

Application filed April 22, 1910. Serial No. 556,964.

To all whom it may concern Be it known that I, Nins H. ANonnsoN, a citizen of the United States. residing at Middletown. in the county of. Middlesex andstate of Connecticut, have invented certain new and useful Improvements in Typethe following is a full, clear. and exact description, such as will enable other skilled in th art it appertains to make and use the same.

The present invention relates th line-spacing mechanism for ,typewriting machines, and has torits ob ect to provide a device of that character which shall em brace a small number of parts, be cheap an easy to make and assemble.

A special object of the invention is to make the-operation as noiseless as possible and to provide improved mechanism for spacingthe platen roller different numbers of lines, as desired.

In the accompanying drawing, wherein is shown one of various possible embodiments of my invention, Figure l a trout elevation of a part of a 'typewriting machine with one form of the invention applie d thereto; Fig. 2 is an end elevation of the same; Fig. 3 is a smaller detail view showing the platen roller immediatelyafter the same has been line spaced and betore the line space lever has been released; Figs. at, 5 and 6 are detail sectional views of c itierent parts of the mechanism taken on the lines m-ae,' yg and respectively of Fig. 1; Fig. 7 is a detail view of the platen release lever.

Similar reference characters refer to similar parts throughout the diiiercnt views of the drawing.

lVhile this invention is illustrated and will be hereinafter described with reference. to that form of typewriting machine known as the noiseless ty ewriter, it is to be understoodthat it may beapplied to other torms 0t typewriting machines.

Referring to these drawings in detail, 1 represents an end plate of the carriage frame carrying a. paper carrier in the form of a platen roller provided with a flat steel platen 3 rigidly secured to and extending between the end plates 1 of the frame against which the types (not shown) cO-act. This platen roller 2 is provided with an axle 4: extending to one side thereof for carrying the usual hand roller 5. "Mounted on this axle a, preferably outside of the to which in Fig. 4. practical roller the actuator 10 wilLbe .guided and limi carriage frame. is a vided with peripl'ieral and crown teeth 7 and 8 engaged respectively by a. platen detent 9 and a line spacing actuator 10, the former of which will be herein described more in detail. This actuator 10 is in this embodiment a pawl pivotally mounted upon a line spacing lever 11, which in turn is pivotally mounted on the frame. The pivotal connection between the actuator 10 and the line spacing lever 11 is shown in detail. A stud 12 provided with a head 13 enters the line spacing provided with an enlarged portion 14 about which the actuator 10 turns. Intermediate the side of the actuator and the head of the screw is a resilient cup shaped washer 15 holding the actuator in trictional'engagement with the line spacing lever, whereby as the lever 11 is moved toward the platen carried immediately into contact with the crown teeth 8 ,on the ratchet wheel to rotate the same in a line spacing direction. line spacing lever is released to permit its return to normal position, the actuator, 'hich is in frictional engageu'ient therewith, is in'm'iediately carried out of contact with the ratchet teeth in order to avoid a disagreeable and noisy clicking of the pawl writing machines.

'lhe actuator and line spacing lever are ted in their return moreposition by a. stationary L- shaped cam arm 16 rigidly secured to the frame and extending to one side of and parallel to the plane of movement of the actuator, and which is engaged by a pin 17 carried by the actuator. Fhis arm not only limits the return movement of the line spacing lever, but also returns. the actuator along a line parallel with the plane of the ratchet teeth and holds the same closely adjacent butout of contact with the ratchet wheel so that it. may in'imediately engage therewith when the device is actuated.

Pivotal connection between the line spacing lever and the frame oft-he machine is shown. in a detail sectional View in Fig. 6 A stud enters the frame at 18 and is provided with a central enlarged portion 19' and a slotted head 20. About the enlarged portion of this pin is a bushing 21 with an outer flanged end; about the bushing is ment to normal ratchet wheel 6 prolever 11 and is ratchet mounted the line spacing lever 11 having an lever to normal position after it is actuated.

This construction permits a ready adjustment of the spring in the followlng manner: A screw driver is inserted in the slotted head. 20 and turned to loosen the threadedconnection between the pin and theframe, after which the bushing 21 may be turned by means of a wrench engaging the hexagonal head, thereby increasing or diminishing the tension of the spring 22. As soon as the desired tension is obtained the screw head is tightened, firmly clamping the bushing in adjusted position between the frame and the head. The bearing sleeve of the line spacing lever is preferably constructed slightly shorter than the sleeve of the bushing 21 in order to have a free rotary motion thereabout when the sleeve is clamped in position.

The actuator 10 carried by the line spac= ing lever is provided at one side with a curved cam face or edge 23 adapted to be engaged by one arm' 24 of a rotary stop 25 in the form of a bell crank lever. The opposite arm 26 carries a pin 27 engaging one of a plurality of recesses or holes 28 in the line spacing lever; (see Figs. 1 and 5). This stop turns about a stud 29 rigidly secured to the line spacing lever and having an enlarged head 30. Carried by the stop 25 is a sleeve 31 of sufficient size to receive the enlarged, head 30 of the stud, thereby forming an annular chamber about the shank of the stud in which is a spring 32 bear ing against the stop at one end and the inner surface of the head at its opposite end, tending to hold the stop with the pin 27 engaging one of the recesses 28' in normal position. The outer surface of the sleeve 31 is preferably knurled or roughened in order that the same can be conveniently grasped by the operator and moved in the direction of the longitudinal aXis of the stud 29, whereby the pin 27 may be withdrawn from the hole 28 and moved into engagement with another to vary the throw of the actuator.

In the position shown in Fig. 1 the actuator will engage the ratchet wheel and rotate the platen roller three spaces in a line spacing direction before the projection 24 engages the cam surface 23, thereby preventing further motion, as shown clearly in Fig. 3. By rotating the stop to the intermediate position the projection 24 of the, adjusting stop willengage the central portion of the cam'face or edge 23 and permit the actuator vto move only a sufieient dislseaaai tance to rotate the platen roller two line spaces before the wedging action takes place, while if the adjusting stop is moved to the third position the projection will engage the upper, end of the cam surface and wedge the actuator into engagement with the ratchet wheel after the platen roller has been rotated through a single line space.

In order to insure the rotation of the platen roller through exact line spaces, a spring arm 33 is rigidly secured to the frame of the machine at 34 and carries at the up per part thereof the roller 9 engaging the peripheral notches T of the ratchet wheel in order to register the paper correctly at each operation. Should itbe desired, however, to rotate the platen an irregular amount, as is frequently necessary in filling in blank forms, for example, the roller 9 may be thrown out of engagement with the ratchet wheel by raising an arm 35, Fig. 7, of the plate 36, shown in detail in Fig. 7 mounted on a sleeve about the axis of theplaten roller and provided with two

notches

37 and 38. The notch 37 is of such shape and size that when the roller 9 engages the ratchet 7, said roller and its supporting parts 38 are entirely free from andwout of contact with the plate 36, the latter being yieldingly supported in this position by a spring detent 39 secured between the frame ,of the carriage and the spring arm 33, said detent being providedat its upper end with a notch engaging a projection 40 in the plate 36, and with a deflecting or cam surface 41 to provide for the passage of the projection 40 into the notch. The detent 39 thus provides a down stop for the plate or release lever, supportin the same out of contact with either the; die r, 9 .or its bearings 38, and at the r tine holding the release lever lightly falid finnily in position, preventing the same from "rattling. Furthermore, the release lever being out of contact with either the roller 9 or its frame, free action in controlling the movement of the platen through the roll 5 is permitted.

' It will be noted in operation that when the line spacing lever 11 is actuated the actuator .or pawl carried thereby will be moved into immediate engagement with the ratchet teeth and rotate the same a vary-' ing number of spaces, according to the posi-' tion of the adjusting mechanism, before the extension or projection 24 wedges the actuator through the cam surface. 23 against the ratchet teeth, thereby preventing further movement. .When the line spacing le- -ver is released the-spring 22about'the pivotal connection with the frame will immediately carithe same to normal position, and

the frictional contact between the actuator 30 I writingmachines}:i'n combination,;a papercarr ers a". ratchet -thereon, f a .jp votally the actuator and the free e frame of the machine will not only guide and limit the movement of the movable the scope thereof, it is. intended that all matter contained in the above description or v shown in the accompanying drawings shallbe interpreted as illustrative and not in a limiting sense; v

Having described my mvent on, what I claim as new and desire to ters Patent is: v

1. In a line spacing'mechanismfor typewriting machines, in combination, a paper carrier, a ratchet*thereon, a" line. spacing secure by Let lever, an actuator pivotally mounted on said line spacing" lever intermediate the ends thereof adapted lto; be" carried into engagement with said ratchet when the line-spacing lever is actuated, and "stationary means j adapted to engage said actuator. and hold said actuator adjacentand out of contact .with said ratchet and to limit .the. return,

movement ofs'ai-dleverJby its engagement. f, p

'- "WI'ItIIIg machines ln combmation, a platen with the pawl.

2. In a linespacingmechanismfor ty'pe f -.yer, anf actuator pivotally mounted on said l ne spacing lever, spring means for holdmounted line spacing lever, spring 1 mean about the pivot of sa'id lever adaptedto 7 hold sa'idlever in; ,Iiormal position, ;,actu.- ator m'oi'i'ntcd"intmediatejthe ends' lever held adjacenttoliut out-of ontact with said Tat'che t, landniean'sl int.

forvaryingthe thro vgof I I 3. In a"l1 ne spacing-mechanism fo writing machinestin cornb'i-natiomza paper. carrier, a-ratchettherefor, a, li'nejspa'cingi lever, spring means adapted [to ,holdfsaid lever-in normal osition; an 'actl ator havingl a" curved edge mounted"intermediate the" endslof said lever held adjacent tobut out:

ratchet, and means on of contactgivith,sai

said line "sp'acin cver'. adapted to" engage different portions'of' said edge .to' vary the- .throw of said actuator wl 1en theline-spac- .ing lever is actuated. n V 4'. In line spacing mechanism for typewriting machines, in combination, a paper carrier, a] ratchet therefor,- a. 'line spacing lever, an actuator having a camface mounted on said .lme. spacinglever, means for holding saidactuatorin frictional engagement therewlth whereby said line spaclng'v lever. and actuator move together,". and means carried by said lever adapted .to entuator.

carrier, a ratchet there-for, a line spacing lever having holes therein, an actuator mounted on said line spacing lever, means for holding said actuator in frictional engagement therewith, a pivotally mounted stop adapted to engage one of said holes to 'vary the throw of said actuator, and a means for holding said actuator adjacent to but out of contact with said ratchet.

7. In line Spacing mechanism for type- Writing machines, in combination, a platen.

.roller a ratchet therefor, a line spacing lever,an actuator pivotally mounted on said .llne spac1ng lever,.spr1ng means for holding said actuator 1n operative fr1ctional engagement vvith said line spac ng lever, and

a stationary arm to limit the return movement of said .line spacing lever;

8. In line spacing mechanism for typeroller, airatchet' therefor, linespacing le-.

ng'said actuator in. operative frictional engagement With said line spacing lever, and means adapted-to hold said hne'spacmg lever in normal position through said ac- 5 9. "In spacingamechanism for type ,"Writi ng machines, in combination, apaper 1 carr 1e1', a] ratchet therefor, a pivotally 'n ounted line spacing lever, spring means about said pivot for holding said line spacmg lever in normal POSllZlOIl, an actuator "pivotally' mounted on said line spacinglever, means forg'determining the throw of said actuator, and means for holding said actufator in] frictional contact with said line spacing-lever whereby it is Withdrawn from engagement with said ratchet on" return movement of said line spacingi lever.

10.111 line spacing-mechanism .for typewriting machines, in combination, a carriage frame, a paper'carrienI-a ratchet therefor, a line spacing lever pivotally mounted on said frame, a-{spring' for returning said .lme

spacing lever, means for varying the ten-= si'on'of the spring, an actuator mounted on sand hnespacmg lever, means for holdlng gage different po1 :.tions of saidactuator to.

vary the throw of. said'actuator.

5. .In' line spacing .mecl'ianism for type-. ,Writm'g machines, in combinat on, a paper said actuator in frictional engagement. therewith, and a stop engaging said, actuator adapted to varyflthezthrow of saidactuator. '11. In :line' sp'acingmechanism for typewritingmach'ines, in combination, aplaten -1- 1'1e.1- a.fratchet therefor, a line spacing means for "holding; v said line spacing lever in normal position, an actuator mounted on said llnespacing lever, and

spring means associated with the connection drawn from engagement with said ratchet when the line spacing lever returns to normal position.

12.- In line spacing mechanism for typewriting machines, in combinatioma carriage frame, a platen roller carried thereby, a ratchet wheel on'said roller, a line spacing lever pivotally. supported on said frame, a pivot for said lever, a spring about said pivot, an actuator pivotally mounted on said line spacing lever adapted to be carried into engagement with said ratchet wheel when the line spacing lever is actuated, a resilient member adapted to act on said actuator and lever, whereby saidactuator is withdrawn from said ratchet wheel when said lever is released, and means for line-centering said platen roller.

13. In line spacing mechanism for typewriting machines, in combination, a frame, a paper carrier, a ratchet therefor, a line spacing lever mounted on said frame, spring means adapted to hold said lever in normal position,

an actuator having a curved edge pivotally mounted intermediate the ends of said lever, a pivotally mounted stop adapted to engage different portions of said actuator on said line spacing lever to vary the throw of said actuator when the line spacing lever is actuated, and means for line-centering said paper carrier.

14. In line spacing mechanism for typewritingmachines, in combination, a carriage carried into engagement with said .ratchet line spacing lever is actuated, a resilient arm-on, said frame, and a roller carried thereby adapted to register said platen roller.

15. In line spacing mechanism for typewriting machines, in combination, a frame, a platen roller, a ratchet wheel on said roller, a, line spacing lever pivotally mounted onsaid frame, spring means adapted to hold said lever in normal position, an actuator having a cam intermediate the ends of said lever, a pivotally mounted stop having apart adapted to engage the cam face in said actuator to vary the point of throw of said actuator when the line spacing lever is actuated, a resilient arm on said frame, and means'carried thereby adapted to line-center said platen roller.

16. In line spacing mechanism for typewriting machines, in combination, a support, an adjustable sleeve secured thereto, a line spacing lever turning on said sleeve, and a return spring coacting with said sleeve and said line spacing lever In testimony whereof I aflix my signature, in the presence of two witnesses.

NILS H. ANDERSON.

Witnesses J. L. ATHERTON, EDWARD H. CLARK.

face pivotally mounted ,wheel or withdrawn therefrom when the