US923503A - Type-writing machine. - Google Patents

Description

J. IELBEL. r TYPE WRITING MACHINE.

APPLICATION FILED JAN. 21, 1909.

Patented June 1, 1909.

5 SHEETS-SHEET 1.

wan Has J'. FELBEL. TYPE WRITING MACHINE. APPLICATION FILED JAILZI', 1905,

vP a-tented-June1.190%

5 SHEETS-SHEET 2.

INVENTUR WM o WITNEEEEEi J. PBLBEL. TYPE WRITING MACHINE.

I I APPLICATION FILED JAN. 21, 1909. 923,503. Patented June 1, 1909.

5 SEBETS-SHEET a.

WITNESEEi- 4 |NVENTEIR= I. PELBEL. TYPE WRITING MACHINE. APiLIOATION IILED JAN. 21, 1909.

Patented June 1, 1909.

WITNESSES:

INVENTEIR:

J. FELBEL.

TYPE WRITING MACHINE.

APPLICATION IIVLED JAN. 21, 1909.

Patented June 1. 1909.

6 SHEETS-SHEET 5.

1 UNITED sirrrrs entrant i e il jni.

JACOB FELBEL, NEW YORK, N. Y., ASSIGNOR TO UNION TYPEWRITER OMPANY, Ob JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYRE-WRITING MACHINE.

Specification of Letters Patent.

Application filed January 21, 1909.

Patented June 1, 1909;

Serial N 0. $73,40.

county of New York and State of New York, have invented certain new and useful lin-- provements in Type Nriting Machines, of which the following is a specification. F

My invention relates especially to retarding contrivances for typewriting machines, and has for its main object to provide improved. devices of this description.

To the above and other ends, the invention consists in the features .ofconstrnction,

"Monarch typewriting machine,

details of the 'escapenient devices.

combinations of'devices and arrangements of parts hereinafter described. and particularly ointed out in the claims. My invention is shown as applied to a ut the nature of said invention is such that it may be adapted to other styles of writing machines. This invention has been made as an improvement-on the construction shown inmy Letters Patent No. 898,635 dated Sept. 18, 1908 and alsoas an imbrovement on the construction devised by erbert H. Steele and set forth in his pending applicatioii'for patent Sr. No. 471,627 filed Jan. 11, 190.).

In the drawings, Figure 1 is a vertical front to rear sectional view of a Monarch typewriting machine embodying my invention, parts vof the machine being'omitted. Fig. 2 is a fragmentary vertical sectional. view showing Fig. 3 is a rear elevation of the machine, parts being omitted and parts broken away. Fig. 4: IS a rear elevation, partly in section, showing on an enlarged scale the retarding contrivance and associate parts, the cover plate of saidcontrivance being omitted. Fig. 5 is a horizjontal sect1onal view of the retarding contrivance taken on a plane represented by the dotted line at in Fig. 4 and, looking in the direction of the arrow at said line, the cover plate, the escapeinent wheel and pinion and the supporting bracket therefor also being, shown. Fig. 6 is' a front elevation showing the retarding contrivance and associate parts. Fig. 7 is a pore iective viewof a part ia. 8 is a perspective view showing a modification of one of the retarding elements. Figs. -9, 10 and 11 are respectively longitudinal vertical, transverse vertical, and horizontal sectional views illustrating a modified spring adjusting device for the retarder c011- 'trivance. Figs. 12, 13 and 14 are respectively a vertical section, front elevation, and top plan views illustrating preferred construction and arrangement.

Referring especially to Figs. 1 to 3 of the drawings, themein frame oi the machine is shown as comprising a basel, corner posts 2 and a top plate '3. The isual printing in strnmentalities (not shown) are mounted on the main frame and are adapted to cooperate with the front face of a platen 41 mounted in a nesting rear'or slide bai The slide bar is grooved at its top and bottom faces to cooperate with bearing balls 7 which also co operate with grooved guide. rails 8 secured to fixed standards 9. Arms 10 pivoted on the end bars of the carriage, support a springpressed feed rack 11 which normally meshes with a feed )inion l2 fixed to-the front end of a horizontal shaft 13 bearing in a bracket 14 secured to the top plate. An escapement wheel15 is supported at the rear enr of the shaft 13 and is operatively connected therewith, said 'escapement wheel cooperating with feed dogs 16 and 17 mounted at the top ofa dog rocker 18, said dog rocker being pivoted at '19 on a bracket 20 depending from the top plate. A link 21 connects the dog rocker with auniversal bar (not shown) which isoperated by the key levers in the customary way. A spring drum 22 is connected by a strap 23 with a pin 24: depending from the carriage. Said spring drum, as is well known, contains a main spring which tends constantlyto draw the carriage leftward over the top plate, the carriage movements in this direction, however, being ordicapement devices during the printing or spacing of the different characters in a line of writing.

The drawings illustrate tabulating lllOt'lF anisin which comprises a stop arm 25 secureap by screws 26 to the slide bar 6. The stop projects rearwardly from the slide bar and is adapted to cooperate with one or more t-ihulator stops 27 adjustably mounted on n toothed stop bar 28, said stop bar being iour naled on arms 9 extending rearward from the standards 9. The stops 2? are normally above the stop 25, as shown in Fig. but the stop bar 28 18 adapted to be turned in its hearings to bring said stops in a line so that narily controlled by the operation of the esa carriage oernpes'edof end beast and a conthey may cooperate when the carriage is re- 1 best shown in Fig. 5, engages openings in said leased. The means for thus turning thestop l bar 28 comprise an arm 29 secured at the right-hand end of the bar 28, said arm being pivotally secured to a downwardly extending link 30 which passes through an opening in the top plate and is pivotally connected at its lower end with one arm of a bell crank lever 31, said bell crank being fulcrurned at 32 to a fixed bracket 33. The other arm of said bell crank is pivotally connected with a forwardly extending slide rod 34 which passes through and bears in an opening in the right-hand-front corner post 2, said slide rod at its front end being provided with a tabulator key or button 35. A spring 36 coiled around the upper portion of the link 30 operates to maintain the stop bar 28 and its actuating devices in normal position. v1 hen the tabulator key 35 is pushed in, it operates through the rod 34 and bell crank 31 to pull the link 30 downward against the tension of the spring 36 and turn the stop bar 28 so as to bring the stops 27 thereon into- .line with the tabulator stop 25 on the carriage. Concurrently the carriage is released.

The means for releasing the carriage which are oper'ated by the tabulator key 25 comprise a finger 37 fixed to and projecting from the link 30 and contactive with one arm of a lever 33 pivoted at 39'on a fixed lug 40. The

other arm of the lever 38 is pivotally connected at 41 with a lifting device 42, said de- .vice being bifurcated at its upper portion to engage with cut-outs in the sides of the bracket 14. As usually constructed the bifurcations at the upper end of the device 42 terminate in lifting shoes which are adapted to engage with the teeth of the rack 11 to separate it from the feed pinion 12 and release the carriage. In the present case, however, I prefer to dispense with these lifting shoes and in the form now being described to provide the device 24 with a lateral off-set 42 formed with a horizontal slot 42 which 4 provides a connection to the retarding consaid plate and the plate 44.

trivance, operating said .contrivance to re lease the carriage as hereinafter described.

. The retarding contrivance is pivotallysupported on a bracket composed of two rightangled plates 43 and 44, the plate 44 having a horizontal arm which rests on a corresponding horizontal arm of the plate 43, the two plates being secured to the top plate 3 by a leaded screw 45. Ears 43 on the'bracket plate 43 prevent relative motion between A in or dowel 46 passes through the horizonta portions of the two plates into the top plate and prevents the bracket as a whole from turning on the screw as a pivot. The upstanding arms of the plates 43 and 44 are spaced apart to receive between them the retarding contrive ance which is pivotally mounted on a headed and shouldered screw 47. Said screw, as

The retarding devices are concase mounted on the pivot screw 47, the retarding devices proper are arranged within the box 48. Said devices comprise a sleeve formed with a central opening through which the shank of the pivot screw 47 passes, as shown in Fig. The sleeve 50 is provided with a radial-arm 52 which terminates in a diamond-shaped wedge or cam 53. One arm 52 and wedge 53 are preferred but if desired a second may be provided, as indicated in the modified construction shown in Fig. 8 wherein the bearing opening which receives the ivot screw is designated as 51. If preferre additional wedges may be employed'. One end of the sleeve50 is adapted to abut against the cover 49 when the latter is in place. From the opposite end of the sleeve an engaging device, in the form of a pin 54 projects into a slot-way or cutout 55 formed on the hub 56 of a gear Wheel 57 which is shown detached in Fig. 7. The hub and gear wheel are formed with abearing openm 47. Til shoulders or abutments 55 and 55 on the collar 56, which shoulders are adapted to co act with the pin 54. Normally the in 54 is maintained in contact with the shou der 55 by a wire spring 59 coiled around the sleeve 50 and hub 56, these parts having the same diameter and abuttin one another so that they form a practica y continuous surface except where the cut-out 55 occurs. One end of the spring 59 is hooked in-a hole 60 in 58 which receives the pivot screw e ends of the cut-away 55 providethe gear w eel 57 and the op osite end of said spring is hooked around t e radial arm 52. The gear wheel 57 and sleeve 50 are adapted to rotate freely on the pivot screw 47 Because of the tendency of the spring 59 to maintain the pin or engaging device 54 in contact with the shoulder or engaging device'55 said ear Wheel and said sleeve will turn as a sing e member unless one of th m is held or prevented from movement in which case it may occur that because of the springiaconn'ection between the two, the other of them may continue .its turning movement, so that a relative movement between-the gear wheel and'the sleeve'may take place, The s ring 59, in other words,-

is double actin ts operation will be discus sed'more, ful y later on. Pins or plugs 61 be understood that the casing Composed of and 62 are adapted to slide loosely in open- I raised or lowered the other part or arm at the ings 63 formed in the box 48 and cover plate 49 (Fig. These pins, formed with round- I ed heads 61 and 62 are supported on the spring which is folded as. shown at 65 and secured by aheaded screw 66 to a block 48 within and integral with the box 48. The

pin 67 (Fig- 4) prevents therhecking spring 3 as a whole from turning on the screw 66 as a An MlJUSlZlDg or thumb screw 68 811-- pivot. gages in a threaded opening in one spring arm 64 and is provided with a flange 68 which contacts with the outer face of the other s ring arm 64, the screw passing loosely throu 1 the latter arm. The shank of the thum screw passes-through an opening 49 in the cover plate 49. The head 68 of said thumb screw is outside the casing where it may be readily mani ulated. By turning the thumb screw it wil be apparent that'the distance between the spring arms 64 may be varied and the rounded heads 61" and 62 of the pins 61 and 62 respectively may be" brought into varying normal relations, and power to flex the sprin checking arms 64. hormally the; distance etween the contact devices or heafd's 61 and 61- on thechecking devices or spring arms is always less than the greatest width of the diamond shaped wedge 53 but in operation the latter is adapted to cooperate with said checking devices and force ceives a pin 71 by which said gear wheel 69 is secured to a shaft 72.

, them apart at times under impulses received from the main carriage propelling's ring of the machine, the spring arms 64 yie f the wedge is passing between them, said spring arms returning to normal position after the wedge has passed them.

The gear wheel 57 meshes with a 006 aerating gear wheel 69-having a hub 7 O which re- Said shaft is adapted to turn in bearing openings in the box 48 and cover plate 49, said box being formed with a thickened portion 48 to provide a i comparatively wide bearing surface for the shaft 72. .Said shaft extends forward outside the box 48. This forward portion car- -ries a toothed wheel or pinion 73, the latter being provided with a hub 74 which is suit- I ably secured to the shaft. lt will be seen that the toothed wheel 73, shaft 72 and the gear wheel 69 act as. a single member and that motion communicated to the toothed wheel 73 will be transmitted by the shaft 72 and gear wheel 69 to the gear wheel 57 and the parts connected therewith. The toothed whcelor pinion 73 underlies the feed rack 11 but normally is separated therefrom. It will fulcrum and that when the part or arm of said casing at one ,side of said fulcrum is ding as l l 1 l u l opposite side of saidfulcrum will be correspondingly lowered or ralsed. In the presshown in Fig. 6. A spring 75, shown in Fig.

ent instance when the casing is mounted in parallel arms 64 of a checking or retarding 3, is coiled around a headed pin 76 on the bracket plate 43 and has one end secured to said bracket plate and the other end underlying the casing of the retarding contrivance. Said spring assists to maintain said retarding contrivance in normal position and to restore it thereto from operating position when the t'abulator key is'released.

In 0 aeration, when the tabulator key 35 is presse in, the stop or stops 27 will be swung down into line with the tabulator' stop 25v and concurrently the lifting device 42 is raised. This causes the slotted off-set 42 acting against the hub 74 to swing the 'retarder contrivance on its pivot and bringthe toothed wheel 73 into engagement with the feed rack 11. Further upward movement of the lifting device 42 will cause the wheel 73 to lift the feed rack from the pinion12, thereby releasing the carriage and ermitting the latter to run leftward under t epull of the main spring. This leftward movement of the carriage causes the feed rack 11 to turn,

the toothed wheel 73 and also the gear wheel 69, both wheels being fixed to the same shaft 72. Rotary movement of the gear wheel 69 will be communicated to the gear wheel 57 and its hub 56. Viewed from the rear as in Fig. 4, the gear wheel 57 and its hub will turn in the direction of the arrow just above said gear wheel in said figure. Suppose that at the time the gear wheel'57 starts to turn, the parts are in the relations shown in Figs. 4 and 5 which are corresponding views. In that case, because of their spring connection 50, the sleeve 50 willbe turned with the gear wheel 57 and its hub, and the normal relation of these parts will not be altered until the wedge 53 has been brought into contact with the heads of the spring arms 64. When this occurs the spring arms 64 may flex slightly, I

but these spring arms are much stiffer than the s ring 59 so that the spring arms will arrest t e wedge 53 and the sleeve 50 on which it is mounted. Notwithstanding the arrest of the sleeve 50, the hub 56 and the gear wheel57 will continue to turn by reason of the lost motion connection between these two parts and the sleeve 50, which lost motion connection permits relative rotary movement between the gear wheel 57 and its hub on the one hand and the sleeve 50 and wedge 53 on the other hand. During this relative rotary movement the spring 59 will of course be wound up beyond its normal tension. As soon as the hub 56 begins to turn independently of the sleeve 59 the shou-l der 55' will separate from the pin 54 on the the opposite side of said pin 54. W en the shoulder 55? engages the pin 54, the sleeve 50 and wedge 53 will be forced ahead and the wedge will press the spring arms 64 apart so that said wedge may pass between them. As soon as this occurs thespring 59 will at once advance the sleeve 50 relatively to the hub 56 until the'pin .54 is brought into' contact again with-the shoulder 55*. There after if the run of the carriage continues, the 0 eration above outlined will be repeated; t at is, the sleeve 50 and gear wheel 57 will turn together until the wedge 53 again contacts with the spring checks fi t'which devices will snap back to noi-inalposition as soon as the wedge 53 has passed them in the course of the operation above described. When the wedge 53 has again engaged the spring arms 6&1 said wedge and the sleeve 50 will again be arrested? and the train of devices comprising the gear wheels 57 and 69 and the I inion 73 will turn inde endently until the s oulder 55 contacts with the pin 54 and forces the Wedge 53 past the stationary checking devices. When the run of the carriage has ended by the contacting of the stop 25 with a stop 27, the tabulator key may be released and the parts will thereupon be restored to normal position. The retarding contrivance will be restored by'the combined operation of the lifting device 42 and its con nected parts and of the restoring spring 75. It wi be apparent thatmy improved retarding contrivance insures that a free move-- ment of the carriage, when first released after the retarding contrivance has been connected with it, shall always take place. The extent of this free initial movement may vary because sometimes at the start the wedge 53 may be farther from the stationary checking devices than at other times, and this free initial movement will in such case be made up of the distance the wedge has to travel befdre being arrested by the stationary checking devices plus the distance the gear wheel 57 may travel thereafter independently of the wedge 53 and sleeve 50 before engagement of the shoulder 55 with the pin 54. It may happen that at the time the carriage starts to run, e, wedge 53 may beengaged -The with v the stationary checkin devices or spring arms 64 in which case t e initial free run of-the carriage will correspond with the distance the gear wheel 57 will turn before the shoulder 55 engages with the pin I54. arts are so pro ortioned, however, that t before theretarding contrivance' is brought less thanthe distance corresponding to that 6 5 independent turning movement 'of the proach study of the construction.

unwind until the shoulder 'mentary retardation of the more,

s distance is su cient to permit the carri;age to acquire considerable momentum 6 0 of and relation between gear wheel 57, aswill be apparent from a Suppose that the-wedge 53 be arrested by the stationary checking devices and that the inde endent .turning movement of the gear whee 57 has begun, causing the separation of the shoulder 55 from the pin 54 and that at this time the carriage be arrested and the tabulator ke spring 59 .wil 55 has been moved [back into'contact with the pin-54. During this backwardmovement of the shoulder 55 it will be notedthat the gear wheel 57 will turn backward, thereb causing backward turning movement of t e gear wheel69 and of the pin 73. Further it will be released; thereupon the be noted that the end ofthe spring 59 which is hooked around the-arm 52 of the wedge 53 will remain stationary while the otherend of the spring 59, which is secured on the gear wheel 57, will move.

Eachtimethatthe wedge' 53 is forced pastthe stationaryfclieckmg devices the carriage will be momentarily checked or retarded and its momentum will be, somewhat less,- ened. As thereafter the momentum is again on the increase the checkin devices will againcome into operation, tac g the carriage so to speak and repeating the mocarriage. The result is that after the first initial free movement'of the carriage said: carriage will be subjected, if the run continues low enough to periodic tackling or retardation which may be so regulated both in extent and in the interval between recurrent operations that harmful shock of the arresting parts maybe avoided andwithout causing an unnecessary loss of time such as may ,occur with other forms of retarding contrivances.,J,Furtherduring shortruns ofthe carriage when harmful shock to the arresting parts does notoccur, the retarding devices may not be brought into play-at ell, byreas on'of the 10st motion conngtiwlwhich operates initially .when the carria e isireleased.v Owing to the fact that he 0' 53, which coa ts; or can directly with stationary checking devices, has-alost mo,- tion'or a s ring connection with the carriage when the atter is running independently of its escapement mechanism, a .free initial movement of the carriagewhen released fromsaid escapement mechamsm is always certain to occur.

Van'ous changes may be made without de-' parting from the spirit. of my present inven tion. For example, instead of empll ying the thumb screw 68 for regulating t' it the spring arms-T64,

be dispensed with 'ke that illustrated said thumb screw 68 ma and a regulating device tension y part;viz;, the wedge mFigs. 9 to 11 may be used. As-shown these figures a, longitudinal-slot 48 may be formed in the upper or top face of the box or iiou the device 78 is adjusted.

neck 77 of a slidable regulating device which further comprises a transverse body portion 78 within the box, said body portion having two downwardly extending fingers 78'" which contact with the outer faces of the spring arms 64?, said spring arms being always embraced between the fingers 78*. As best shown in Fig. 11, the spring arms 6.4 are separate pieces, being secured one at each side of'a biock 48 integral with the box 48 by a headed screw 79. The upper face of the neck 77 is formed with a tapped opening which receives athumb screw 80, the flange 80 whereof is adapted to engage the to face of the box 48. The construction is suc that when the thumb screw is tightened it draws together the flange 80 and the upper face of the body 78, binding the box 48 between these two parts at either side of the neck 77. When the thumb screw is loosened, the tension regulating device 78 may be slid lengthwise oi the slot 48 to the desired position and thereafter secured in said position by ri toning the thumb screw. It will be apparent that as the regulating device 78is moved toward the devices 64 at the free ends; of the stationary checking devices or spring arms 64 the length of said spring arms will be shortened so that it requires greater expenditure of energy to force them apart. In other words, the retarding effect ma y be regulated by adjusting the device 77 along the slot way 48 When this device is employed, the spring arms 64 always maintained parallel no matter in what posilt is of course to be understood, however, that any other suit ilo regulating device for the checking or ting device may be made use-of within my invention; that the checking device itself may be altered in. construction and arrangement; that the pins 61 and 62 may be omitted but the heads 61 and 62 preferably retained and that various other changes may be made in other parts of the retarding contrivance in order to adapt it to other conditions and for improving its construction.

in Figs. 12 to 14 of the drawings 1 have illustrated other means for connecting the retarder with the carriage and for releasing said carriage. -ln the construction first described, the retarder is connected with the carriage through the usual swinging carriage feedraeh by a pinion 7 3;- which pinion also serves to swing said carriage feed rack-on its pivots so as to release the'carriage. in order to ireducewear on the teeth of said carriage feed rash and to reduce the liability of breakof said teeth by reasonioi' the co-action of the pinion '73, i prefer .to provide a sepas rack for coo aeration with the retarder pinion, which raclr in the present instance fixed to the carriage and serves to connect 5 tnrder i'rmtrivance; that no part movable bysaid carriage with the-retarder; and to pro vide other means acting on the usual carriage feed rack to swing it away from the jvarriage feed pinion and thus release the carriage. The additional rack 81 is fixedly secured near its ends by screws 82 to lugs 6 projecting rearward from the upper part of the carriage slidebar 6. The rack 81 is arranged 111 rear of the feed rack 11 and on a level therewith as best shown in Fig. 12. r The retarder contrivance 18 so constructed.

and mounted on the top plate that the pinion 78 underlies the rack 81 instead of the rack 11 as in the former construction. .The slotted extension 42% of the lifting device 42- engages with the forward end portion of the shaft 72,which in this instance rejects forward beyond the pinion 73 as sliown' in Fig. 14. When the lifter 42 is raised by operating the tabulator key 35, the retarder contrivance will be swung on its pivot to bring the-pinion 72 into mesh with the rack 81. The carriage is released at this same operation by a lever 83. Said lever is provided with a hub 84-which receives a shouldered screw 85 that engages in a tapped 'hole in the lower guide rail 8 and provides a fulcrum for the lever 83. Said lever curves downward, leftward and u ward from its fulcrum and is also off-set 'orward slightly, terminating in a rounded lifting shoe 86 which underlies the feed rack 11. A pin 87 fiXedto and projecting forward from the lifter 42, engages in a slot 88 in the lever 83, this loose connection permitting the lifter 42 to swing the lever 83 upward, causing the shoe-85 to engage the feed rack 11 and separate the latter from the feed pinion 12. The parts are so timed that when the lifting shoe 86 contacts with the teeth of the rack 11, the pinion 73 will already have entered for a short distance the teeth of the rack 81, thus insuring a connection of the rcta-rder with the carriage before the release of said carriage shall have begun. When the carriage is finally released the pinion 73 will be fully engaged with the rack 81. As stated, I prefer to connect the retarder and release the carriage by the-means shown in Figs. 12 to 14; but the first described or any other construction may be employed in connection with my reta'rdcr contrivance, and said contrivance itself may be altered in various respects without departing from my invention.

It will be noted that by my present invention I provide a checking device (the wedge shaped cam 53 in the present instance) which has a yielding connection through the spring 59 with the carriage of the machine, said carriage operating to move or rotate said checking device; that a co-acting checking device or devices (that is, the spring arms) is provided with which the movable checking device is (-ontactive in the operation of the re- -parts; that one of said parts or rotary demove the checking device independently of ing the slidable' pins 61 and 62; that there is parts 56 and 50 inc normal relationship;

the carriage is contactive with said e e-acting checking. device except said movable checking device; that, owing to the fact that this movable checking device is yieldingly connected'to the carriage by a spring or yielding connection which provides for a lost motion, a preliminary free run of the carriage is insured prior to the effective operation of the re-' tarder; that the co-acting checking devices are mounted on a support which remains stationary during the run of the carriage, that harmful vibration of the co-acting checking devices or noise due to vibration is prevented, the preventing means in this instance bea part or cam 53 which is movable by the carriage into the path in which both the coacting checking devices normally lie that the hub or part 56 is movable by the carriage; that the sleeve or second part 50 is mounted independently of the first part 56; that a yielding connection comprising the spring; 59 joins said parts 56 and 50; that said yielding or spring connection transmits rotary movement from one to the other of said vices (50 in the present instance) carries a cam iixed thereon, said cam being yicldingly connected with the carriage through the yielding or spring connection 59; that said yielding connection. tends to maintain the that in. said normal relationship the co acting engaging devices 55 and 54 on said parts are, in contact; that the checking or retarding devices 64 are engageable by the cam 53 on the part 50 to hold the engaging part 50 until other of said engaging devices (thatis, 55 and 54-) are brought into co-action; and that the engaging devices may be considered to be first the shoulder 55 and the side of the pin 54 contiguous to said shoulder 55, and, second, the shoulder 55* and the side of the pin 54 which is adapted to contact with said shoulder 55*. r

What I claim as new and desire to secure by Letters Patent, is z 1. In a retarder contrivance for typewriting machines, the combination. of a checking device, a yielding connection between said checking device and the carriage of the machine which connection operates to the retardinmaction, and a co actingchecking device, the movable checking device being the only part connected tothe carriage which can contact with said eo-acting checking device. Q

2. In a retarder contrivancc for typewriting machines, the combination of a checking device mounted on a support which remains stationary during the run of the carriage, a part movable by the carriage in path in which said checking device normally ms, and a yielding connection between said part and said carriage, through which motion first part, a yielding connection between said parts which transmits motion from one part to the other independently of the retarding action, and a checking device with which said second part co-acts.

4. In a retarder contrivance for typewriting machines, the combination of a part rotatable by the carriage, a second part mounted independently of the first part, a spring connecting said parts to transmit rotary movement from one 'to the other independently of the retarding action, and a checking device with which said second part co-acts. i

5. In a retarder contrivance for typewriting machines, the combination of a cam, a yielding-connection between said cam and. the carriage of the'machine, and a spring checking device cooperative with said cam.

6. In a retarder contrivance for typewriting machines, the combination of a rotary device, a cam fixed thereon, a yielding connection between said device and the carriage of the machine, and a yieldingly mounted checking device cooperative with said cam. H

7. In a retarder contrivance for type-- writing machines, the combination of rotary sleeve, a cam'fixed thereon, a mechanical lost motion connection between said sleeve and the carriage of the machine, and a checking device movable by said cam. 8. In a retarder contrivance for typewriting machines, the combination of a part movable by the carriage of the machine, a second part mounted independently of the first part, a spring connecting said parts and transmitting motion from one part to the other, said spring tending to maintain them in normal relationship, and a checking device with Which said second part co-acts.

9. In a retarder contrivance for type- Writing machines, the combination of'a part movable by the carriage, a second part mounted independently of the first part, coacting engaging devices on said parts, a yielding connection between said parts which transmits motion from one part to the other, and a checking device with which one of said parts co-acts. 10. In a retarder contrivance for typewriting machines, the combination of a part rotatable by the-carriage, a secondflrotary engagement, said spring transmitting motion from one part to theother, and a checking device engageable by one of said parts.

11. In a retarder contrivance for typewriting machines, the combination of a part rotatable by the carriage, a second rotary part mounted independently of the first part, co-acting engaging devices on said.

parts, a spring connecting said parts and tending to maintain certain of said engaging devices in engagement, and a checking device engageable by one of said parts and operative to hold said engaging part until other of said engaging devices are brought into co-action.

12. A retarder contrivance for typewriting machines comprising ,in combination a gearwheel having a hub provided with engaging devices, a sleeve provided with engaging devices cooperative with engaging devices on said hub, a spring connecting said hub with said sleeve, a-cam on said sleeve, and a checking device cooperative with said cam.

13. A retarder contrivance for typewriting machines comprising in combination a gear wheel having a hub provided with engaging devices, a sleeve provided with. engaging devices cooperative with, said engaging devices on said hub, a spring connecting said hub with said sleeve, a cam on said sleeve, and two yielding checking devices adapted to be forced apart by said cam.

14. retarder contrivance for typewriting machines comprising in combination a gear wheel having a hub formed with a cut-out portion, a sleeve having a pin projecting into said cut-out portion, a coiled spring connecting said hub and said sleeve, said s ring operating to maintain said pin norma y in contact with one end of said cut-out portion, a cam on said sleeve, and a yielding checking device cooperative with said cam.

15. A retarder contrivance for typewriting machines comprising in combination a gear wheel having a hub formed with a cut-out portion, a sleeve having a pin projecting into said cut-out portion, a coiled spring connecting said hub and said sleeve, said spring operating to maintain said pin in contact with one end of said cut-out portion, a wedge-shaped cam on said sleeve, and a pair of yielding checking devices adapted to be forced apart by said wedge-shaped'cam.

16. A retarder contrivance for typewriting machines comprising in combination a gearwheel having a hub formed with a cut-out portion, a sleeve having a pin projecting into said cut-out portion, a coiled spring connecting said hub and said sleeve, said spring operating to maintain said pin incontact with one end of said cut-out portion,a cam on said sleeve, parallel spring arms, and pins carried by said arms.

17. A retarder contrivance for typewriting machines comprising in combination a gear wheel having a hub formed with a cut-out portion, a sleeve having a pin projecting into said cut-out portion, a coiled spring c011- necting said hub and said sleeve, said spring operating to maintain said pin in contact with one end of said cut-out portion, a wedge-shaped cam on said sleeve, parallel spring arms, devices on said arms cooperative with'said cam, and a device for regulating the, tension of said spring arms.

18. In a typewriting machine, the combination with a carriage having a rack thereon, of a retarder contrivance comprising a key- -controlled casing pivoted on the frame of the machine, a toothed wheel outside the casing and engageable with said rack, a rotary part provided with engaging devices, gearing connecting said rotary part with saidtoothed wheel, a second rotary part provided with engaging devices and carrying a checking. device, a spring connecting said rotary parts, and a spring checking device cooperative with said first recited checking device;

19. In a typewriting machine, the combination with a carriage having a rack thereon, of a retarder contrivance comprising a key controlled casing pivoted on the frame of the machine, a toothed wheel outside the casing and engageable with said rack, two relatively movable engageable rotary parts, gears connecting one of said rotary parts with said toothed wheel, a cam on the other rotary art, and a yielding check cooperative wit said cam. y

20. In a typewriting machine, the combination with a carriage having a rack thereon, of a retarder contrivance comprising akeycontrolled casing pivoted on the frame of the machine, a toothed wheel outside the casing and engageable with said rack, a ear having a fixed relation with said toot ed wheel, an intermeshi-ng gear having a hub formed with a cut-out, a sleeve having a pin entering said cut-out, a coiled spring connecting said sleeve with the hub and maintaining said pin normally in contact with one end of said cut-out, a cam on said sleeve,'and 'a spring check cooperative with said cam. v

21. In'a typew'riting machine, the combinationwith acarriage having arack thereon,

of a retarder contrivance comprising a key controlled casin g pivoted on the frameof the machine, a toothed wheel outside the -easing and engag'ea-ble with said rack, a gear having a fixed relation with said toothed wheel, an intermeshing gear having a hub formed with a cut-out, a sleeve having a pin entering said cut-out, a coiled spring connecting said sleeve and said hub and maintaining said pin normally in contact with one en'd'of said outout, a cam on said sleeve, a spring checking device cooperative with said cam, and means t for regulating the resistance of said checking device.

22. In a typewriting machine provided with a carriage and carriage feeding devices including two co-acting separable parts, the

combination of a rack on said carriage and independent of said carriage feeding devices, a retarder mechanism comprisin a movable element carrying a toothed whee engageable with said rack, a lifting device for movin said element "and causing said toothed whee Y with a carriage and carriage feeding devices including two co-acting separable parts, the combination of a rack fixed to said carriage and independent of said-carriage feed-, ing devices, a retarder mechanism comprising a casing pivoted on the frame of the ma-' chine, a toothed wheel outside the casing and cooperative with said fixed rack but normall se arated therefrom, a key-controlled slid able, lifting devicev operative to swing said casing on its "pivot and bring said toothed wheel into engagement with said fixed rack, and a lever operative by said lifting device to separate said separable parts of the carriage feeding mechanism.

24. In a typew'riting machine provided with a carriage and carriage feeding devices including a pinion and a swinging rack normally engaging said pinion, the combination of a rack fixed on said carriage, a retarder mechanism comprising a pinion engageable with said fixed rackand mounted on a shaft connected with the retarder devices proper, a key controlled lifting device engaging said shaft, and a lever ivoted on afixed part and operative by said lifting device to swing said swinging rack out of engagement with its pinion.

25. In a typewriting machine provided with a carriage and carriage feeding devices I including a pinion and a swinging rack normally engaging said pinion, the combination of a rack fixed on said carriage, a retarder mechanism comprising a pinion engageable with said fixed rack and mounted on a shaft connected with the retarder devices proper,

with a carriage and carriage feeding devices including a pinion and a swinging rack n ormally engaging said pinion, the combination of a rack fixed on said carriage, a retarder mechanism comprising a pinion engageable with said fixed rack and mounted on a shaft connected with the retarder devices proper, a slidable lifting device provided with a slot engageable with'said shaft,a key operated mechanism for actuating said lifting device, and a lever liar-ring a fixed fulcrum and loosely connectel with said lever having a lifting shoe engageable With said swinging rack.

said lifting device,

27. In a typen riting machine provided with a carriage and carriage feeding devices including a pinion and a swinging rack normally engaging said pinion, the combination of a rack member on said carriage, a retarder mechanism comprising toothed'wheel engageable with fsaid rack member but nor mally separated therefrom, .a key controlled lifting device for engaging s'aid wheel with said rack member, and a lever o" erative by said lifting device to disengage said swinging rack. a a

28. In a typewriting machine, the combination of a carriage carrying two racks, escapem ent mechanism including a pinion adapted to one of said racks for feeding the carriage step-by-step, a movable retarder adapted tobe driven by the other of said racks, a key actuated lifter for moving said retarder into'engagemerrt with said driving rack, and a lever connected with saidlifter for disengaging said feed rack from said feed Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York, this 20th day of January A. l). 1909.

JACOB FELBEL.

\Vitn esses E. M. WELLS, J. B. Dnnvns.

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