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Publication numberUS744424 A
Publication typeGrant
Publication dateNov 17, 1903
Filing dateAug 20, 1900
Priority dateAug 20, 1900
Publication numberUS 744424 A, US 744424A, US-A-744424, US744424 A, US744424A
InventorsAndrew W Steiger
Original AssigneeAugustus L Hoffman, Frederic S Converse, Frederic J Leach
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Retarding device for type-writer carriages.
US 744424 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

No. 744,424 V PATENT ED NOV. 1'7, 1903.





P l h l U l I h l l l h I":

PATENTED NOV. 17, 1903'.-


APPLIOATION IiI-ED AUG. 20, 1900. RENEWED MAR. 25, 1903.



No. 744,424. 7 PATENTED OV. 17, 1903.

' r A. W. STEIGER.



'N0.v44,424. PATENTED NOV. 17, 1903..




' the. i eatenteci November 17, 1903, 1

M ifiiiilhlfi? tl ti icei iii, OF eoe'imi, ti'ASSAGiiUSEIUIS,ASSIGNOR, Bi MeeNe EUFWMAN,FREDEHIU ooiwhese, AND CiiFtiTSiihlP-tfl,Uh i mite, HEW YORK.

tilhi GARWAGE$.

EHELEGILFIGJQLEIGIV forming pit-rt of Lettere lieterht Ito. "M?!" 242;, November 17; 1903.

' Application filed Aogfietflil, 1e00, Itenewerl March 25,1903, -hm-htiho.1i9,584. om model- To 55 whom, it may concern: 'tehie having, secured thereto a scale which,

ea it known that 1, ANDREW W. STEETGER, in connection with en indicator fixedto the e citizen of the United Etatee, i'eeidingih BOS- frame of the mechihe, precisely determines ton, inflthe ceimty of Suffolk and Stete of the piece the nexteymhol will occupy. I11 5 Massachusetts, have invented certain new the manual I locate a release-key, which is 55 and useful 1m proifezheote in Reterding Desuitably connected with the release-arm of vices for Tlype i friter Cefriegee, of Whieh the the eeee eehicht. Pivoted to theesoapement fol-lowing, teiteh in connection with the eehI-eoket eiii ji marrying a normally inactive re- 'oompeuyi g drawings, is e, specification, temiiogtiog; ie a frame which rests against e to Thie improvement in i'lype-writere relates; flexihlecoimection on the releese arm. 1 When. 6e

3e ecrihe by others that withdrew the epeciiigi,

' o tiohego (i to this to devices to reterriihg or controlling the [the it'eieeee erm iedepreesed, the retarding-- trevel of the carriage when the restraining dog is brought into contact with the spacing. detent thereof {usually the feedflog) ie Withreek secured to the carriage, and f'urthe 'mm drawn trem the epeeingqeolc end the draft tion of the release-arm withdraws thefeedr5 mecheoiem polls theeei'riavge iii'ite direction (30,9; from the rack, thus throwing the .car- 6 of teeth When the machine is to he need tin-(1 9i? the teneion of itedraft mechene for iiiiihg blanks, melting invoices, tehoiatism onto the retarding-dog. A toe on the reing, cataloguing, and other like WOilI, it terciihgdog S'iS'iLigS in contact with a shout been customary to ihterpose in the path of (16f on the check-deg of the escepement, end i 2c the carriage devices for arresting the motion the present-e of the ceri'iege on the reteiid- 7o 4 thereof at suitable intervals. As the we iiig aiog hits the check-dog slightly into the riege they travelmenyepecee enii is stopped. reek; The ehech-dog does not enter the reek. instantly, the ehock is severe and yet-y ihj o euffieieh tiy toetop the carriage, but acts trici'ioueto the meehine. eomeemhuifee' time iy the ezigee of the reek-teeth, end 25 borers, to the meohihee, have ii-to h tenths. teieii heeltihto its normal po- W video no lee-called marginal stopping de- "i egeio eeneee, the retarding-dog 1 vices, but have "obliged the perete to oy pei'hef the rack and, yielding; heath release the Lego a op hit the t he carriage, again lifts the fieeired location. Devices eve heeh Cieeh in shot with the carriage spacelg which sequence QEHIOVQDIGDiSSUOH- 3o reek from the esoepement mechanism, some tihuee as long theopeietor holds down the of which have a. brake for checking the mo i'eleeee-hey, ohd hy Watching; the scale the camtion of the carriage; hot the efiect the z'iege meyheetoppeii etthe desiredplace with" brake tieiii all of the proposed conetmetioee out jet or injury to any part of the machine. 35 with which em femiliei' de giehdeht the Wi'ieh p we subjected to vibrations of 85 ireeeo of the operator en thei 5 eo there euhetzti ei eteipiitucie by a, constant no certainty ot' the epeeii ct Wh. r of vihretione oi the earth 2h theme force, i mote, wiil given time ionetant. Now the hoiiy eve tame the ehev'e oh ret'n'tl Cl eheckmiog move to and. fro

' 1e e jiecihgweok in this meego v. .i of the carriage under of ti *1 tlmtt meehehiem is uniform. ii": the oeiiteiof gi'evity of the vibrating parts the m e oivihreiion will change; so I t on we of the dogs that may 5 weietioh to the pivot of the I adjust the weight farther from the the doe to eiow up the carriage or- We t to pivot to quicken theflmceon-liege; but it should he untieh of an etijitzet e tie-o to the iieiwi X 'i@l5,&5i1ii1g' on "i motion speed, i x H J hormel tee etent emit put ou he moved control of the said; constentepeed-i'etm 'ie' device i i the n enuel, in imptov stood that as soon as the operator presses the key sufiiciently to remove the escapement from .the rack the speed of the carriage is wholly automatically controlled by the retarding device at the rate of motion for which the parts have been adjusted.

The illustrationsshow in Figure 1 a rear viewoi a type-writer; Fig. 2, a partial plan of a type-writer; Fig. 3, a longitudinal section of a type-writer; Figs. 4 and 5, enlarged views of the retarding mechanism-5 Fig. 6, a detail ofthe indicating devices.

The carriage provided with thespacing-rack dis arranged to slide along the lined rod Z) and guide-rail c by any suitable draft mechanism. Supported upon thecarriage is the usual plates, and counected with the papertable of the platen is the scaled to enable the operator to position the Work with relation to the indicator 0, secured to a fixed portion of the machine.

Upon the trunnion-rail f is secured the bracket g, in which is pivoted the rocker h,

and at one end of the rocker the feed-dogs, having a slotj to permit vertical movement, is supported, the upper portion of the feeddog having a slot 7., so that the feeding vibration thereof may be limited by the strut Z, pivoted to the bracket g. At the opposite end of the rocker a check-dog m, is pivoted and connected to a link a, pivoted to the bracket g, to move only across the path of the carriage spacing-rack a. A spring tends to hold the feed-dog normally in contact with the spacing-rack and to depress the'checkdog. Links connect the release-key lever o "with a bell-crank p and the latter with a release-arm g, which is pivoted on the bracket 9. A frame 1' is pivoted to the bracket g and flexibly positioned by a yielding connection, as the spring is, fast to the release-arm (1 and in contact with a projection tfrom the frame 4", theupward movement of which frame is limited by an adjustin -screw 11,, threaded in a yoke depending thehefrom, that comes in contact at times with the trunnion-rail f. In the upper part of this frame 1' the retarding-dog v is pivoted, and the toe to of this dog rests under the shoulder a; of the check-dog. To vary the rate of vibration of the dog 'v, and hence the speed of the carriage under the draft'of its spring, the split weight 1 may be adjusted on a blade extending therefrom.

The above construction facilitates the accurate adjustment of the retarding-dog to the spacing-rack, which is important, the best results follow it the dogs have but limited motion from the rack, and as the trunnionrail is pivoted in the machine parallel to the spacing-rackthe frame 1', carrying the retarding-dog, will be maintained at constant distance from the rack by the adjusting-screw it when the release-key lever forces the yieldingconncction against the framor. Theyielding connection prevents the operator from improperly ail'ecting the vibrating parts in manipulating the release-key, as when the pressure is sufficient to position the frame 0' the feed-dog will be withdrawn from the rack, greater pressure only bends the spring 5 without changing the position of the frame r, and less pressure at once inserts the feed-dog to stop the carriage and allows the frame carry-.

ing the retarding-dog to fallback from the rack. When the operator strikes a symbolkey or the space-bar, the rocker causes the feed-dog i and check-dog'm to alternately come in contact with the rack a, the effect of which is to feed the carriage one space at each stroke; but if the release-key is touched then the lever 0, through the bell-crank p, turns .the dog 1; down, thereby lifting the check-dog in. into contact with the teeth of the rack ct by means of the toe to and the shoulder 56. The vibration thus established will continue while the release-key is depressed, and the rate of vibration may be regulated by moving the weight 3 attached to the retardingdog I. When the release-key is restored to .normal position, the feed-dog r3 again enters the rack a and stops the carriage.

The location of the release-key in the manual is an important feature, as no awkward reaching is required. The operator simply touches the key, watches the scale and indicator, and removes the finger when the carriage reaches the desired location.

Having described my invention, I claim and desire to secure by Letters Patent of the United Sta tes 1. In a type-writer, a carriage, means to move the carriage in its feeding direction and devices to allow the carriage to advance step by step, combined with automatically-controlled constant-speed-retarding mechanism for the carriage and means to free the carriage from the stepby-step devices and .to connect it to the constant-speed mechanism, without otherwise impeding the motion of the said carriage, substantially as described.

2. In a type-Writer, a supporting-frame, a carriage, a connection between the carriage and frame to move the carriage along the said frame in the direction of feed, and a spacingrack attached to the said carriage, combined I with a feed-dog and a check-clog thatare con nected with each other and the manual so the carriage may be thereby advanced intermittherefrom, combined with means for withdrawing the feed-dog from, and contacting the check and retardingdogs with, the spacing-rack, substantially as described.

4. In a type-writer, the combination with the carriage,'its draft mechanism and spacing-rack, of vibratory automatic devices for feeding" the carriage uniformly and means to change the number of vibrations in an interval oftime of the said automatic devices, substantially as described. V

5. In a retarding device, a bracket having a. rocker, strut and link, a feed-dog movable with relation to rocker and strut, a check-d 0g pivoted to rocker and link and meansfor depressing the feed-dog without affecting the check-dog, oombined with a retarding-dog and means for placing, the retarding-dog in operative relation to th'e 'rheckdog, substantially as described.

ii. In atype-writer,havingstep-by-stepand uniform-speed feeding devices including reiarding-dog, neans for adjusting the vibrathe retarding-dqg tory motion of the retardingdog, substan- 'tially as described.

In testimony whereof I have hereunto sub- 7 name this 27th day of December,

scribed my ANDREW W. STEIGER. Witnesses: A


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3312322 *Mar 5, 1965Apr 4, 1967Scm CorpEscapement mechanism for typewriters
US3417848 *Dec 13, 1965Dec 24, 1968Olivetti Underwood CorpRepeat spacing mechanism for typewriters
US3472353 *Dec 21, 1966Oct 14, 1969Scm CorpRepeat carriage spacing mechanism for typewriters
US3730323 *Aug 4, 1970May 1, 1973Brother Ind LtdRepeat spacing mechanism for typewriters
US3735850 *Aug 4, 1970May 29, 1973Brother Kogyo Kk Nagoya ShiRepeat spacing mechanism for typewriters
US3799312 *Feb 23, 1973Mar 26, 1974Brother Ind LtdRepeat spacing mechanism for typewriters
US3840106 *Jan 31, 1973Oct 8, 1974Nakajima All & Co LtdAutomatic repeat spacing mechanism for typewriter
DE1296147B *Mar 3, 1966May 29, 1969Scm CorpWagenlaufschaltvorrichtung an Schreib- oder dergleichen Maschinen
Cooperative ClassificationB41J19/02