US1286186A - Variable escapement. - Google Patents

Variable escapement. Download PDF

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Publication number
US1286186A
US1286186A US7597216A US7597216A US1286186A US 1286186 A US1286186 A US 1286186A US 7597216 A US7597216 A US 7597216A US 7597216 A US7597216 A US 7597216A US 1286186 A US1286186 A US 1286186A
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pallet
escapement
teeth
wheel
movable
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US7597216A
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Monroe E Miller
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UNDERWOOD TYPEWRITER Co
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UNDERWOOD TYPEWRITER CO
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00Character- or line-spacing mechanisms
    • B41J19/18Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/34Escapement-feed character-spacing mechanisms
    • B41J19/58Differential or variable-spacing arrangements

Description

IvI. E. IvIILLEII.-

VARIABLE ESCAIEMENT. APPLICATION FILED ri. a. I9Ie.

1 ,2486, 186. Patented Nov. 26, 1918.

2 SHEETS-SHEET I.

3/.5IA9- l' 54 55,6335525 f gln w IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIMI I M HII lim l l 43 52 Ill 53 ILT M. E. MILLER.

VARIABLE ESCAPEMENT.

APPLICATION man FEB. a. 191e.

PatentedNov. 26, 1918.

2 SHEETs-SHEEI 2.

MONROE E. MILLER, WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO UNDER- WOOD TYPEWRITER COMPANY, OF NEW YORK, N. vY., A CORPORATION OF DELA'- WAREt VARIaBLE EscArEMEN'r.

Specification of Letters Patent.

Patented Nov. 26, 191s.

Application filed February 3, 1916. Serial No. 75,972.

, capement mechanisms, and aims to provide a novel and improved escapement mechanism lfor use upon typewriters especially, al-

though it can be used in other kindred machines wherein a 'variable spacing escapement is desired.

With the ordinary typewriter, the spaces allotted the small and capital letters and other characters, such as the period, comma, semicolon, etc., are all the same, and it is the practice with this uniform spacing system, to provide type wherein many of the letters and other characters are made out of proportion. Thus, the letters i, ,4 etc., are widened, while the letters m and w are made narrower than ordinarily, as with bprinters4 type, so that these wide lettersare crowded. Furthermore, the capital letters are only allowed the same spaces as the small letters, so

that they are also out of proportion. It is thus necessary with prevailin 'typewriter escapements to widen some of t e characters unnecessarily, while others are made n arrower, in order that the work will not have a broken appearance, but at the same time, the appearance of the work is marred, due tothe fact that somev letters or characters are out of proportion. I

It is the object of this invention to provide an escapement mechanism whereby the various letters and other characters occupy spaces in proportion to their Width, so that 4 the narrow letters, periods, commas, etc., will occupy narrow spaces, while the wider letters and characters will occupy relatively Wide spaces, thereby enabling harmoniousI and properly proportioned type to be used. This escapement mechanism is so constructed and operable as to vary the stepsmade 'by the carriage when the various character keys are depressed. y

Another object of the invention is the provisionl of an escapement mechanism so operable, that when the shift key or shifter is depressed or otherwise operated for changing from small to capital letters, or the like, the capital letters will be given wider spaces than the small letters, in order that the small and capital letters can be of proper proportions. For example, the small letters i, a and m are allotted spaces of increased widths A1n succession, while the capital letters I, A and Mare allotted spaces wider than the respective spaces allotted the small letters i, a and m. t

--A still further object of the invention is the provision of an escapement mechanism of the character indicated, which will be operated after the character keys are depressed, and before the said keys are depressed sufficiently for completing the movement of the type against the platen, whereby there is no opportunity for blurring, since the carriage and its platen will have moved the proper amount before' the type strikes the platen.

As a more specific object, the invention aims to vprovide an escapement wheel of unique construction and carrying means cooperable with a pallet member or device for varying the steps or step movements by the wheel, said wheel being geared or otherwise connected t0 the carriage in a suitable manner, and being operated selectively bythe trouble, alterations 0r expense, and which is feasible and practical.

Thel present mechanism also enables a typewriter to be built, to supplant the expensive linotype, monotype or similar machine, since newspaper columns and other printed matter can be typewritten, using an ordinary font of printers type', andthe mattertypewritten can then be used as a basis for providin the plate or sheet of type from which t e newspapers or other mattei'I is printed, the typewritten matter being readily transferred by any well known or special chemical process onto a lead or other plate or sheet. This eliminates the setting or production of individual or lines of type, at a great saving. Furthermore, diiferent typewriters having different styles and sizes of type can be used with more convenience and less expense than the use of a number of linotype or similar machines.

With the foregoing and other objects 1n view which will be apparent as the nature of the invention is better understood, the invention resides in the combination and arrangement of parts and in certaln details, but it is to be understood that the dlsclosure is more or less typical, since changesare possible, within the scope of what is hereinafter claimed, without departing from the spirit or principles of the invention, and which changes would be apparent to those skilled in the art in adapting the inventionto various typewriters. The 1nvent1on 1s illustrated 1n the accom- --panying drawings, wherein 4 Figui-e1 is a front view of the escapement mechanism, portions being shown in the section on the line 1-1 of Fig. 3, and other parts also being shown in section, while some portions are broken away.

Fig. Q -is a plan view of the mechanism,

portions being shownin section and others being broken away. Fig. 3 is a longitudinal sectlon of the mechanism, portions being shown -in section and others being broken away.

Fig. 4 is an enlarged sectional detail illustrating a portion of the escapement wheel and coperating elements which act upon it. Fig. 5 is a plan view of the key board, showing slight changesin the characters, the letters being the same as on' a standard key board typewriter.

Fig. 6 is a specimen of the work of an ordinary typewriter.

Fig. 7 is a specimen of the work when a typewriter embodying the present escapement is used, and showingA the di'erent spaces allottedthe various characters, whereby lthe printingV is the same as that done by printers type.

In the drawings, only those portions of a typewriterA are illustrated which cooperate directly with the present mechanism, to simplify the drawings, and to conine the same to the essential parts. There is illustrated a portion of the frame -1 of a typewriter, and a portion of the rack bar2 which is attached to the carriage (not shown) and which meshes witha pinion or spur gear l3 secured upon a rotatable shaft 4 journaled in suitable bearings of the frame 1. The character keys' are designated by the reference charl acter 6, and the shift keys by the numeral 7,-

while the spacing key is designated 8. The keys 6 are carried by the key levers 9, as is Y also the spacing key 8, and the case shift keys 7 are carried by the shift levers or and constructions of typewriters.

'ratchet wheel 12, and said ratchet wheel Laeaiee Y members 10. The foregoing parts are common in present day typewriters, and are to be taken as typical only, since-the present mechanism can be used with various styles The gist of the invention resides in the provision .of an especially constructed es capement wheel, and elements coperating therewith. The escapement wheelis designated generally by the numeral 11, and is mounted loosely upon the shaft 4, preferably between the bearings 5. This escapement wheel 11 is rotated or actuated by the carriage as the carriage is moved during the printing operation, and when the carriage is returnedl to starting or initial position, the escapement wheel 11 remains stationery.

This is carried out by means of a ratchet wheel 12 securedupon the shaft 4 atfone side of the escapement wheellland engaged by a pawl'or dog 13 carried 'by said side of the escapement wheel, while a second ratchet wheel 14 is secured to the opposite side of the escapement wheel 11 and is engaged by a pawl or dog 15 carried by the frame. 9o Ilhus, when the carriage is advanced so that the rack bar 2 is advanced, the shaft 4 being rotated due to the rotation of the pinion '3 by the rack bar 2, will rotate the being engaged by the p awl 13 carried by the escapement wheel 11, will. cause the escape-ment wheel -to rotate, 'butfwhen the carriage is returned, the ratchet wheel 12 can" turn idly without rotating the escapement 10o wheel 11 in a retrograde direction, since the teeth of the ratchet wheel 12 simply move past'the pawl 13. r1`he reverse rotationof the escapement wheel. 11- is prevented by the pawl 15 in engaging the ratchel Wheel 14' lofi attached to the escapement wheel, and .this holds the escapement wheelin proper position. V The escapement wheel 11 is provided with an annular series of bores or aperturesl 11o extending from one side to the other parallel with the axis of the shaft 4, although said apertures can( be arranged otherwise. These apertures are preferably arranged adjacent t e periphery or margin of the Wheel 11 and a pin 17 is slidable with each aperture 16 transversely of the wheel, or from one side of the wheel to the other. The wheel 11 is provided with bores or recesses 18 extending radially, andy extending from 120 the periphery of the wheel so as to intersect the respective apertures 16. Disposed within each bore 18 is a ball or holding element 19 at the inner side of the respective pin 17, and a coiled wire expansion spring 20 is 125 seated within the bore 18 behind the ball 19 to move into engagement with; the pin 17.

' Each pinA 17 vhas a pair offann'u'lar grooves or recesses 21 into which the ball 19 is movthe other groove when the pin is in its opposite -pos1tion. The balls 19 have three functions, namely, they 'prevent the pins 17 from leaving the escapement wheell-l accidentally, -they hold the pinsin either position, and they also assist in moving the pins into either position since the balls. in being` forced into the grooves 21'by the springs 20 will thereby tend to move the pins to one position or the other, when the ridges between the pins are moved past the balls.

Coperating with the pins or teeth 17 of the ratchet wheel 11 is an oscillatory palle-t member or arm 22 mounted for oscillatory movement upon a shaft 23 which is slidable in bearings 24 and 25 of the frame 1, the arm 22 being preferably disposed between saidbearings. The upper free end'of the arm 22 has opposite pallets 26 and 27 straddling vthe peripheral or marginal portion fof the wheel 11 and' movable alternately and aguide or slide 31 is into the paths of the opposite ends of the pins 17. This pallet arm 22 stops or limits the rotation of the escapement wheel 11,

and is normally in the position illustrated in Fig. 3, whereby the rear ends of the pins 17` coperate with the pallet 27 to pre-vent the rotation of the escapement wheel 11 unless provided for by the4 depression of a' key. The pins 17 normally project rearwardly or to the'rear side of the wheel 11, as seen in Figs. 2 and 3, so that they die not project from the forward side or face 3a of the wheel. l

In orderto move the pins 17 to normal rearward position as they leave the pallet arm 22, acurved cam or tongue 28 is carried by the frame 1 in rear of the arm 22, and V is larranged to force any pins rearwardly which project from the forward side of the wheel as the wheel rotates. Thus, all of the pins 17 are moved rearwardly before they again reach the pallets.

Some means must be provided for moving the pins 17 forwardly for coperation with the pallet 26, at different distances therefrom', and as one of several means for accomplishing this result, there are employed three oscillatory arms 29, 29 and 29 mounted upon the shaft23, there being three of said arms to provide three di iferent spaces forsmall, medium and wide characters, although various numbers of-arms or members for this purpose can be used. The arms" 29, 29 and 29 are mounted upon the shaft 23 between the bearings 25 and another bearing 30 in which said shaft is slidable, A rovided with brackets 32engaging the shat 23 andholding the arms 29, 29 and 29 therebetween,

whereby when said slide 31 is shifted, the arms are moved therewith approximately longltudinally of the periphery of the escapement wheel 11. The brackets 32 can be secured to the shaft 23 so that said shaft will 'slide with the slide 31 and arms 29, 29 and 29, the arm 22 being held in position by the bearings 24 and 25. This shifting of the arms 29, 29. and 29" is utilized for changingl the spacing for small and capital letters and other characters. In order to support the slide 31 for reciprocatory movement vin connection with the shaft 23, the slide 31 has a tongue 33 movable in a slot 34 of lthe frame l. Pivoted to the upper free end of each of the arms 2,9, 29- and 29 is an angularly extending finger 35, said fingers having stops 36 to normally contact withthe arms for holdingsaid fingers at an obtuse angle with the arms. The free ends of the fingers 35 project in rear of three pinsl, which are predetermined distances from the pallet arm 22, and the fingers 35 are swung yieldably to normal position by suitable springs 37, and the arms 29, 29 and 29 are normally swung rearwardly to idle position by springs 38 con-l necting said arms and slide 31, whereby the fingers 35 aremoved rearwardly away from the pins 17 so as not to interfere therewith.

Suitable means are employed for operating the arms 29, 29 and 29" selectively when 1 the character keys are depressed, and as one way of accomplishing this result, the free ends ofthe arms 29, 29 and 29 are provided with extensions 39 which normally rest upon the upper ends of lift bars 40, 40 and 40, respectively, slidable vertically 'through the slideor guide 31. The lower ends of the bars 40, 40 and 40 are bifurcated or notched, as at 4\1, to straddle or 4otherwise engage the rear cross pieces of therespective levers or rockers 42, 42 and 42. Said levers are of rectangular form, one being disposed within the other, and are` mounted for oscillation up'on a transverse shaft 43. Springs 44 normally pull the, bars 40, 40 and 40 downwardly toA levers and levers 42, 42 and42, whereby when the small characters, such as the letters i, j, andthe like, and the period, comma, colon, etc., are typewritten, the respective key levers in being depressed will swing-the lever 42. The normal sized letters or characters have their' key levers connected to the lever 42', while the wide letters have their key levers connected to the outer lever 42". The levers of the spacing key 8 can be connected to any one of the levers 42,

42 or 42, whichever is desired, and a plu.'-

rality ,of spacing keys can be provided for. operating the various levers 42, 42 and 42" to provide various blank spaces. When the levers 42, 42 and 42 are operated, they lift the lift bars 40, 40 and 40 so that the extensions 39 are raised, and swung toward the es'capment wheel 11, the arms 29, 29',

' and 29 being thereof, it being un erstood that only one- The'- swun with said extensions of said arms is swung at one time.

bars are slidable in lines arranged chordally relative to 'a circle having the shaft 23 .as-

' the type strikes the platen.

The pallet arm 22 is operated when either ofthe levers 42, 42 or 42 are operated, and as a simple means for accomplishing this result, .the Varm 22 has an auxiliary arm 46 to which is connected a rod 47 having its other end attached to a transverse rod 48 seating upon the rear arms of the levers 42, 42" and 42 and heldin place by 'upstanding lugs 49 carried by saidv arms of said levers, whereby when any one of said levers l is operated, it will lift the rod 48 and its rod or stem 47 to raise the arm 46, and swing the arm 22 rearwardly, thus removing the pallet 27 from the pin 17 which rests against 1t, and bringing the pallet 26 adjacent the 'wheel 11 to lie in .thepath of the pin 17 whichis moved forwardly by either of the arms 29, 29 or 29". 'The r'od 48 is normally moved downwardly by means of springs 49a,

to vreturn the arm 22 to normal positionv when the character key is released.

Means are provided whereby when either of the shift key levers are depressed, the

slide 31 is shifted for varying the spacing y movement of the escapement wheel or member 11, whereby capital letters and other large characters wil-l be given wider spaces Aat than the small letters and other characters. Thus, longitudinal rock shafts at the opposite sides are journaled in suitable bearings v.51 of the frame 1, and have attached thereto arms 52 connected by links 53 with the shift key levers 10, said links 53.having hooks at their lower endsy in which the le vers are seated'. Thus when either lever 10 is depressed, the other lever need not be,

which is the same case withthe levers 9, A

since when any lever 9 is depressed, the

' others remain in place. The rock shafts 50 have second arms 54 attached thereto, which are connected by links 55 with the ends of the slide 3l. The arms 52 and 54 in conmection with the rock shafts 50 provide `bell resale@ crank leversfwhereby when. either of the levers 10 is depressed, it will result in the' slide 31 beingshifted from the bearing 25 to the bearing 30, thus moving the arms 29,

29 and 29 and their lift bars one pin farther awayl from. the pallet arm 22.

lows

The carriage, -which is ordinarily under The operation of the mechanism is asfo'l-l the movement ofthe rack bar 2 as long as 'p the escapement wheel cannot be moved, and

said-wheel cannot move due to the 1fact that vone of the rearwardly projecting pins 17 i rests against the pallet 27. The pins in advance of the pallet 26 are all pushed back,

this being accomplished by the cam 28 which pushes-thev pins back to normal position as they leave the pallet 26. Now, supposing the lkey of the small letter i, the period',

comma, or the like, is depressed, it will pull down on the respective link 45 which` is connected to the forward arm or cross piece of the lever 42, swinging the forward arm of said lever downwardly, 'and A swinging'fthe rear arm thereof upwardly. The lift bar 40 is therefore raised, which lwill swing the arm 29 forwardly so ,that its finger 35 pushes the pin 17 which is in front of it forwardly toA project from vthe forward side of the escapement'wheel 11, and at the same time that the lever 42 is swung, the rod 48 is raised, as is also the stem 47, thus swinging the arm 46 upwardly. -Whenfthe arm 46 is swung upwardly, the arm 23 is swun rearwardly thereby removing the pallet 2 from its pin 17 at the same time thatv the other pin 17 is pushed forwardly by the arm l29, and this releases the escapement wheel, letting it rotate a short step, until the pin 17 which was pushed forwardyby the arm 29 strikes the pallet l26, said pallet 26 being brought adjacent the wheel 11. rlhus, the

wheel l1 can rotate a short step, to let the rack bar 2 and carriage move a short step when the small letter i, period, comma, or

similar character is .,printed. Attention is directed-to the fact that when the hft bar.

40er' either ofthe other lift bars is raised',

the respective pin 17 is pushed forwardly before the character key is depressed, due to the fact that the extension 39 is swung print is made, and therebv eliminating blurring. When the key is released so as to rise to normal position, the arm 29 swingsrearwardly after the lift bar 40 is moved downwardly by its spring 44, and the lever 42 also being returned to normal position which allows the rod 48 and its stem 47 to move downwardly, so that the pallet 26 is removed from the forwardlyprojectin pin 17 allowing said pin to move past sai pallet, but the opposite pallet 27 will simultaneously loe-moved into operative position to be contacted with by the lfollowing pin 17, thus allowing the' wheel to turn alpartial step. Thus, the escapementwheel can turn a partial step during the return movement of the character key and other parts, and

` pallet lever can be locked in position,

plurality of capital letters or large characthis reduces the amount of movement 'that the escapement wheel must make when the succeeding character key is depressed. When the character key is depressed that operates. the lever 42', the lift bar 40 is raised, thereby operating the Asecond arm 29 which projects a pin 17 forwardly which is slightly farther' remote from the pallet 26, in order that the escapement wheel 11 can rotate proportionately farther, for providing awider space. When the key of a wide character is depressed, thelever 42 is operated to lift the bar 40, and swings the arm 29', whereby a pin 17 still farther remote from the -pallet 26 is operated. Thus,

the arms 29, 29 and 29" are operated se lectively by the keys, and they project such pins 17 as are predetermined distances from the pallet 26, in order that when the pallet .arm 22 is swung simultaneouslv with either of thearms 29, 294 or 29, the escapement wheel can rotate a distance proportional to .the width of the ycharacter being printed.'

When either of the shift key levers 10 is depressed, it swings the respective bell crank lever, to" shift the-slide or guide 31 one pin to the left, `as seen in Fig. 1, although thel amount that the slidel31 is shifted can be varied. The arms 29, 29 ,and 29 are now one pin farther remote from the arm 22,

wherebyy said arms 29, 2 9 and 29" are operated, the escapement wheel can rotate a httle farther in each case, .than when the arms are in the-position illustrated in; Fig.

Consequently, when the vshift lever orshifter Vis operated to change from small to capital letters, the pin` operating arms v29, 29 .and 29 are shlft'ed farther from the arm 22, and consequently the pins 17 which are projected forwardly by said arms will be farther remote from the pallet `arm than when small letters are printed. -Naturally, the 'capita-l letters and larger characters will be allotted wider spaces, than the smallletters and characters, and spaces in proportions to their widths. The shift key whereby a -a position to carriage in suchposition, l

wheel 11 remaining v initslast posltion durv ters can be made in succession, and as soon as the shift lever is released, the slide 31 will return to normal position, whereby the arms 29, 29and 29 are again returned to small letter position.

The fingers 3'5 are mounted to swing away from the pins 1-7, whereby when one of said fingers 35 has'pushed a pin 17 forwardly, the succeeding pins 17 can pass said linger 35 without difficulty, and said finger 35 cannot prevent the advance movementof the escapement wheel. The ingers 35 are normally out of the way of the pins 17, however, so that only that inger 35 which has pushed a pin 17 forwardly need swing out of the way of the following pin or pins.

The circle in which the pins '17 are arranged can be sufiicientl larger in diameter than the pinion 3, wherel) greater movement of the pins 17 is provided, so vthat 1a more minute spacing movement of the carriage is accomplished.

Another cardinal advantage of the present mechanism resides in the fact that the carriage can be returned and stopped at -any point desired, whereby a line may be started y a proportionately 'at any desired point, or wherebya character can be placed at any selected point on the line. This renders the invention useful in connection with billing and similar -typewriters, since the characters can be readily placed in different columns, and column stops such as lare ordinarily used can be made adjustable for stopping the carriage at many `more pointsithan is now possible..

within very small fractions of an inch, one j ratchet wheel will alwaysv be in engagethe pawl 13 to hold the thev escapement tooth of the ing the returnmovement `of 'the carriage, so'

that as soon-as the'carriage is again in posii tion to feed forwardly, the escapement.v mechanism is in position to perform its duty.

` In Fig. 6, there is illustrated a specimen of the work done by anordinary typewri-ter ,''t

being noted that the spaces'S of the various characters are unifonmor of the same' wldth and that some of the characters are allotted spaces ynarrower than they should occupy,

thatother characters occupy spaces wider.

than` they should, and that other charact'ersare made widerin 4proportion toll up the spaces. This method involves the use of characters 4of uniform width. Now, .by referring to Fig. 7 wherein .a specimen of the;

work of a t ewriter employing the pres- 'ent escapement mechanism, -is depicted, it

iso

:essaies will be noted that the spaces allotted the various characters are in proportion to the relative Widths of the characters. rlhus, the smally letter i, the periods, the commas, etc.,

l o occupy narrow spaces S1 and the medium i sm'all characters occupy medium spaces S2, Y while the Wide small characters occupy Wide spaces S3. Turning to the capital letters/'or largeY characters, it will be noted that the i letter I occupies a Wider space than that occupied by the small letter i, as indicated a-t A 2o in Spaces proportionalvtotheir Widths, in-- order that a neat and pleasing e'ect is provided, and the use of printers type made possible.-

Having thus described the invention', what is claimed as new is:

l. An escapement mechanism embodying Ya pallet device, au escapement means havinga series of means normally in one position and movable to another position to coper- V5%() ate with the pallet device, means for moving said second mentioned means individually and selectively to second mentioned position at diierent distances ahead of the-pallet device and operable to move only one of l said second mentioned means at a time, the

pallet'device having means movable to cooperate with that one of the second mentioned means that is moved to second mentioned position to control the steps made and, 40 having means to stop the escapement means when the first mentioned means of the pallet device is moved to releasing position.

2. An escapement mechanism embodying l a pallet device, an escapement means havlng a series of means normally in one position and movable to another position to cooperate lwith the pallet device, a plurality of key-operated devices for moving` the sec'- n ond mentioned means selectively to secondy DQ mentioned position at diiierent distances .ahead of the pallet device, said pallet device" being operated Whenever one of said plurality of devices is operated, the pallet de- Vvice having a pallet movable to coperate VV'55 with one oi the second mentioned means' l`when in second mentioned positionand'an alternately movable pallet to stop the es?- capement means when therst mentioned-L pallet is moved to releasing position.l

3; An escapement mechanism embodying a pallet device, anescapement member havj ing teeth normally in one position and mo-v vable to another position, means for moving the teeth individually and selectively `to seclltY ond mentioned position at di'erent distances `pallet devicev having a pallet movable into ,ing positiomaud means for returning the 'ahead of the pallet device and operable to\v move only one off/said teeth at a time, the pallet device hay/ing means coperable with that tooth that moved to second mentioned position to control the steps made and hav- J7o ing means to/stop the escapement member when the first mentioned means of the pallet device i *'/moved to releasing position.

4. An e capement mechanism e.'.1bodying f a 4pallet device, an escapement member, a se- 75 ries of ,teeth carried by said member normally in one position and movable to another position to coperate with the pallet device, a plurality of key-operated devices for moving said teeth selectively to second mentioned 80 position at dilierent distances ahead of the pallet device, the pallet device having a pallet movable into the path of the teeth when in second mentioned position and .an alternately vmovable pallet to stop the escapement member when the first mentioned pallet is moved to releasing position, the pallet device being operated Whenever one of said plurality of devices is operated. y

5. An escapement mechanism embodying a pallet device, an escapement Wh el having an annular series of teeth normally. in one position and movable to. another position,

:means for moving said teeth individually "and selectively to second mentioned position at different distances ahead of the pallet device and operable to move only one of said teeth at a time, said device!` having'means movable into the path of that tooth that is i moved to second mentioned ,position to control the steps made and having` means to stop \the escapement wheel when the first mentioned means of the pallet device is moved to releasing position.

6. An escapement mechanism embodying 105 apallet device, an escapement Wheel, an annular series of teeth carried by the Wheel normally in one position and movable to another position, aplurality of key-operated devices for moving said teeth selectively to U0 `second mentioned position atydifferent dis; I tances ahead. ot said pallet device, the pal- -let device being operated when any one of said plurality of devices is operated, .the/u5 the path of the teeth When in second men- V-tioned position-and an alternately movable pallet to'stopthe escapement Wheel when the first mentioned pallet is moved to releasteeth to normal. positionv after they have passed the first mentioned pallet.

`, 7. An esoapem'ent mechanism embodying "an escapement means having a series of means normally in'one position and-movable; ,12b to another position, means operable for individually and selectively moving the sec ond mentioned means to second mentioned position one ata time only, and a'pallet device engageable with that: one of 'saidsecond 130 a pallet device, an escapement member mentioned means that is moved to second mentioned position to control the step made by the escapement means and stopping the escapement means when said second named means is released.

8. An esca-pement mechanism embodying having a series of teeth normally in one position and movable to another position, and means for moving the teeth individually and selectively from normal to second' position one at a time only at different distances ahead of the pallet device, said pallet device being coperable with that tooth that is moved to second position to control the step made by the escapement member and stopping the escapement `member when said tooth is released.

9. An escapement mechanism embodying a palletldevice, an escapement wheel, an annular series of teeth carried thereby normally in one position and movable to another position, and a plurality of key-operated devices operable individually and coperable with said teeth at dierent distances ahead of the pallet device for moving one of said teeth at a time only from normal tol second positlon, said-pallet device being cooperable With said tooth when in second position for controlling the step made by said Wheel and stopping the Wheel when said tooth is released. i

10. An escapement mechanism embod ing a'pallet device, an escapement member aving a series of teeth normally in one position andmovable to another position, means for moving said teeth in dividuallyand selectively to second mentioned position at different distances ahead of the pallet device,

said means being operable to push a single tooth only to second mentioned position for cooperation with the pallet device, the pallet device being operated when said means is operated and having a pallet to move in front of a tooth when in` second mentioned osition'to control the step made, the palet device having vmeans for stopping the 1 escapementmember when said pallet is removed from said tooth.

11. An escapement mechanism .embodying a pallet device,` an esca ement member'having, a series of movab e movable member anda movable' portion carried by said member to vengage the teeth and adapted tobe 'moved out of the Way thereof by the teeth following that one moved to second mentioned position.

teeth normally'inone' position and movable to another position to coperate with said device, and- -means for moving said teeth from normal to second Inentionedxposition including a 12. An escapement mechanism embodying a pz'illetdevice',V an escapement member, a series o'f'movable teeth carried thereby normally in'one positionandmovable to an- Wheel,

made by said means,

' the SteDsmade by ingv coperable in other position to coperate with said device, and means for moving said teeth to second mentioned position aheadof the pallet device, and including a swinging member and a spring pressed portion pivoted to saidy memberand adapted to contact with one tooth to push it to second mentioned position, said portion being adapted to be swung l out of the Way by those teethfollowing the one pushed to second mentioned position.

13. An escapement mechanism embodying in combination with a depressible key, an escapement device, a movable member controlling said device, and a second. movable member operated when the key is depressed, the first mentioned member h aving a portion bearing against the second mentioned member to be moved thereby, the second men- I tioned member being movable past said porterminal during the completion of the de-v pression of said key.

15. An escapement mechanism embodymg an escapement wheel havingian annular s eries of apertures and bores i tersecting said apertures, pins slidable in sa d apertures to project from one side or the other of sald said pins each having a pair of grooves, balls in said bores engageable 1n said grooves, and springs seated in said bores for pressing the balls into said grooves'.

16. An escapement mechanism'embodying a pallet device, an escapement means coper. ble therewith and operable at dierent distances therefrom for vary-ing `the steps means for selectively operating the escapement means for coper.-

erable to change the mentioned means Vrelative to --the pallet de vice to change' the steps made .bythe escapement means. l '17. An'escapement mechanism embodymg pallet device,

escapement lmeans havlng a series of means normally in one position and movable to another position to coperate vwith the'pallet device, 'and means for individually and selectively ymoving the second mentioned means to second mentioned position at different distances from the pallet/ device to coperate therewith and to control the pallet device' being operated when" the third mentioned -means is operated and beone position with the esea pement means to stop it, and 'n another ration with thepallet dev1ce,'and'means opoperation of the second 125. the escapement means,

'trol the steps made.

position with the second mentioned means when inv second mentioned position to con- 18. 'An escapement mechanism embodying a pallet device, an escapement member having a series of movable teeth normally in one position and movable to another position, and a plurality of key-operated devices for individually and selectively moving said teeth vto second mentioned positioniat different distances ahead of the pallet'device to coperate with said device, the pallet device beingl operated when anyone of said.

, plurality of devices is operated, and the pallet device being operablein'one position to stop the escapement member and being'operable in another position' to engage that tooth thatis moved to second mentioned po-v sition to control the step made.

19. A mechanism embodying stopping means, means movable past said stopping means 'and having a series of means to coperate therewith, actuating 'means .for operi es' ating saidV series of .means .at di'erent distances from the stopping means to coperatetherewith and determine the movement of the movable means, and lmeans operable for changing the relative distances of operation from'the stopping means of said se- 2 1.A `mechanism vofthe character de- 4scrlbed embodying an escapement Wheel,"

'. operating means, a pallet device operated by said means co erable with said Wheel, movable teeth carried by said Wheeland engageable with said device for varying the steps .made, l means operated by the operating means for moving said teeth'for coperation yvith'the pallet'device, and-means for changlng the rel-ativeope'ration of said teeth by the operating .means 22. VA mechanism of the character .de-

scribed vembodying an escapement wheel havin movable teeth, a pallet device coperable .wlthsald teeth for varying the steps made,

a plurality of devices for moving said teeth for coperation with the pallet device, and means for changing therelative operation of said teeth by said devices.

23. A mechanism of. the character described embodying key members, an escapement Wheel having movable teeth, a pallet "device coperable with said teeth A'for varying the'steps made, a shift controlling member,

means operated by the key members for'movnaecnac ing said teeth for coperation with the pallet device, and means controlled by the shift controlling member for changing the relative operation of said teeth by the last mentioned means.

24. A mechanism of the character descri-bed embodyingkey members, a shift controlling member, a ratchet wheel having movable teeth, a pallet device. coperable with said teeth for varying the Steps made, a plurality of devices operated by the key members for moving said teeth for coperation with the pallet device, and. means operated by the shift controlling member for changing the operative relation between said teeth and devices.

25. A mechanism of the character described embodying an escapement wheel having movable teeth, a pallet device, means for moving the teeth for coperation with the pallet device, saidi means and pallet device being relatively movable, and means for i moving them relatively, for changing the steps made'when they are moved relatively.

26. A mechanism of the character described embodying an escapement Wheel having movable teeth, a pallet device coperable with said teeth for varyingthe steps made, and means for moving said teeth for cooperation With the pallet device and movable to and from the pallet device Vfor further changing the steps made. 27. A mechanism 'of the character described embodying an escapement Wheel having movable teeth, a pallet device coper- 'able With said teeth for varyingn the steps' made, means for moving said teeth for. cooperation With said device to vary the steps made, and means for changing the operative relation between theV last mentioned means and pallet device. Y

28. A mechanism vof thecharacter described embodying key members, an escape-v ment Wheel having teeth normally one position and movable to 'another position, a pallet device engageablewith said teeth when position ahead of the palletdevice- 729. Anescapement mechanism embodying if in combination With character keys and,

case shift device,` a pallet device, Yescapement means copera'ble with said pallet device sind operable at different distances from said pallet device forvarying the steps made byY saidv means, and means controlled by said keys and 4coperating with the aforesaid means to operate the same for coperation withgthe palletdevice, the last-mentioned-means and Ipallet Adevice being operated at diderent relalll@ lin their second mentionedY positiomand a 5 plurality'of devices operated by the 'respec-f tive key members, one at a time', for movmg .21.:

. a single tooth from its normal to itslotherl- Mf rac tive positions when the shift device is operated.

$0. escapement mechanism embodying we in combination with character keys and case shift device, a pallet device, escapement means having means operable at different distances from said escapement means, a plurality of devices for operating said second mentioned means at. different distances from the palletdevioe and operated selectively by the keys, said plurality of devices being operable at different positions relative to the pallet device, when the shift device is operated.

81. An escapement mechanism embodying in combination With character keys and a case shift device, an escapement member, a pallet device, a series of teeth carried by said escapement member and coperable with said pallet device for varying the steps made by said member, said teeth being movable to different positions, and means controlledby the shift device and controlled by the keys for moving said teeth from oneposition to another at different distances relative to the pallet device.

32. An ,escapement mechanism embodying in combination with character keys and a case shift device, an escapement member, a pallet device, teeth movably carried by said 'member and movable from one position to another to coperate With said pallet device for varying the steps made by said member, a plurality of devices controlled selectively by the keys and operable for moving said teeth from one position to another in advance of said pallet device, and means operated by the shift device for rendering said plurality of devices operable at different distances relative to the pallet device.

33. An escapement mechanism embodying an escapement member, a' pallet device, series of movable teeth carried by said member and movable to different positions to cooperate with said device for varying the steps made by said member, means 4for moving said teeth from one position to another at different distances from said pallet device, and means operable to change the relative distances that the/aforesaid means is operable from the pallet device. 34. An escapement mechanism embodying an escapement wheel, a pallet device, an annular series of teeth carried by said Wheel for movement from one position to another and coperable-With said device for varying the steps made by said Wheel, a plurality of devices coperable With said teeth for moving them from one position to another in advance of 'said' pallet device, and means operable to change the distances that said plurality of devices are operable from the pallet device.

35. An escapement mechanism embodying in combination with character keys and a case shift device, an escapement member, a pallet device, a series of teeth carried by said member and movable to different positions Ato coperate with the pallet device to different positions, a pallet device coperable With said teeth, a slide, a plurality of devices operated selectively by the various keys and operable for moving said teeth at' different distances in front of said pallet device, 4the shift 'device being operatively connected to said slide to move the same to different distances from the pallet device, said plurality of devices being movable with the slide.

37. An escapement mechanism embodying in combination with character' keys, and a ease shift device, an escapement wheel, an annular series of teeth carried thereby normally at one side thereof and movable to the opposite side, a pallet, device having a pallet to stop the movement of the wheel and having a second pallet coperable with said teeth when in one position, the pallets being operated simultaneously and alternately, a slide, means moved with the slide and operated by said keys for moving said teeth from normal to second position ahead of the second pallet, the pallet device being operated when said means is operated, said slide being moved to different positions by the shift device, and means for returning said teeth to normal position after they pass the second pallet.

38. An escapement mechanism embodying in combination with character keys and a case shift device, an escapement Wheel, an

annular series of teeth carried thereby and normally at one side of said Wheel and movableto the opposite side, a pallet device having a pallet to stop the Wheel and having a second pallet coperable with said teeth When moved to their second position, means for returning said elements to normal posi-V tion after they have passed the second pallet, a plurality of devices movable With said slide and operated selectively by the keys, said pluralityvof devices being operable for moving said teeth from their normal to their second position at different distances ahead of the second pallet, said slide being operated by the shift device to move said plurality of devices to diHerent distances from the pallet device, the pallet device and both of its pallets being operated when any one of the said plurality of devices is operated.

39. A mechanism having stopping means, means movable past said vstopping means and having a series of means coperable With said stopping means, a plurality of actuating means for operatingsaid series of means at different distances from the stopping means/to coperate therewith and determine the movement of the movable means, and means operable for changing the operation of said series of means by the actuating means. v

40. A mechanism embodying stopping means, a member movable past said means and having a series of movable teeth, a plunasales rality'of actuating devices for moving said teeth at dierent distances from the stopping means to coperate therewith and determine the amount of movement of said member, and means operable for changing the movement of said teeth by said devices. In testimony that vI claim the foregoing 'as my own, I have hereto aiiiXed my signature in the presence of tWo Witnesses.

Monson E. MILL-IER.

kWitnesses z. v

HERBERT D. LAWSON, E JosEPHINE WERNER.

US7597216A 1916-02-03 1916-02-03 Variable escapement. Expired - Lifetime US1286186A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439470A (en) * 1944-11-14 1948-04-13 Ibm Variable spacing mechanism for typewriting machines
US2794530A (en) * 1955-02-07 1957-06-04 Olympia Werke Ag Variable escapement mechanism for typewriters
US2986258A (en) * 1959-09-29 1961-05-30 Royal Mcbee Corp Escapement mechanism for business machines
US3018870A (en) * 1959-08-18 1962-01-30 Royal Mcbee Corp Proportional spacing mechanism
US3045798A (en) * 1960-07-15 1962-07-24 Royal Mcbee Corp Banking and escapement apparatus for electric typewriters or the like
US3225886A (en) * 1963-01-17 1965-12-28 Royal Typewriter Co Inc Multi-uniform and variable pitch escapement mechanism
US3318520A (en) * 1964-04-11 1967-05-09 Olivetti & Co Spa Program control device for an adding or accounting machine
US3346086A (en) * 1963-09-25 1967-10-10 Ibm Proportional escapement apparatus for a single element typewriter
US3350004A (en) * 1967-10-31 Program control device for an office machine
US3417849A (en) * 1964-01-04 1968-12-24 Olivetti & Co Spa Backspacing device for a proportionally spacing typewriter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350004A (en) * 1967-10-31 Program control device for an office machine
US2439470A (en) * 1944-11-14 1948-04-13 Ibm Variable spacing mechanism for typewriting machines
US2794530A (en) * 1955-02-07 1957-06-04 Olympia Werke Ag Variable escapement mechanism for typewriters
US3018870A (en) * 1959-08-18 1962-01-30 Royal Mcbee Corp Proportional spacing mechanism
US2986258A (en) * 1959-09-29 1961-05-30 Royal Mcbee Corp Escapement mechanism for business machines
US3045798A (en) * 1960-07-15 1962-07-24 Royal Mcbee Corp Banking and escapement apparatus for electric typewriters or the like
US3225886A (en) * 1963-01-17 1965-12-28 Royal Typewriter Co Inc Multi-uniform and variable pitch escapement mechanism
US3346086A (en) * 1963-09-25 1967-10-10 Ibm Proportional escapement apparatus for a single element typewriter
US3417849A (en) * 1964-01-04 1968-12-24 Olivetti & Co Spa Backspacing device for a proportionally spacing typewriter
US3318520A (en) * 1964-04-11 1967-05-09 Olivetti & Co Spa Program control device for an adding or accounting machine

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