US1022580A - Type-writing machine. - Google Patents

Description

C. B. CORGORAN.

TYPE WRITING MACHINE. APPLICATION FILED Nov. 26, 1910.

19022580; Patented. Apr. 9, 1912.

unirse santas 'PATENT OFFICE.

CORNELIUS B. CORCORAN, OF NEW YORK, N. -Y., ASSIGNOR T UNDERWOOD TYPE- WRITER COMPANY, 0F YORK, N.. Y.,' A CORPORATION 0F DELAWARE.

TYPE-WRITING MACHINE.

' Specification of Letters Patent.

Patented Apr. 9, 1912.

Application filed November 26, 1910. Serial No. 594,269.

To aZZ whom it may concern:

Be it known that I, CORNELILS B. COR- CORAN, a citizen of the United States, residing in the borough of Bronx, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Type- VVriting Maehines,.ot' which the following is a specification;v

This invention relates to means for pre.- venting false advancemovement of the paper-carriage at. the begining of the line of writing. After a line hasv been written, the paper carriage is returnedto its ini-tial position, and arrested byA a margin gage. The impact y of theVA carriage against the gage, it' very severe, is sometimes followed by a jumping or rebound of the carriageto the extent ot' one or more letter spaces in advance of the proper writing point,'due to the releasable rack on the carriage jarring loose from the escapement pinion 4on the framework and thereby accidentally freeing the carriage, so that it is advanced by the action of the usual feed spring. lf

, this action is notnoticed by the operator,

l'the work will have anuneven left hand margin; and even 1f the action is observed,

the operator must return the carriage to the proper point, betere writing the line.

The principal objeryt of this invention is to insure the evenncss ofthe lett hand margin, which is accomplished by 4locking the .escapement n'ieinbersl together at the 1no ment of impact of the carriage with its gage to prevent the carriage fronrskipping or jumping vforwardly. v'lo this end, -a latch is mounted on one arm of a lever (preferably that usually carrying the car.- riage slop) to .hook beneath a catch on the frame oi the machine (preferably the Inary gin gage) to hold the lever. against vlbration. The opposite arm of the lever operates to lock the releasab'le member ofthe letter-spacing v.mechanism (which in the present instance comprises a swlngmg rack Ashowing the. shiftable letter-feeding rack locked in engagement with the escapement pinion. Fig. 3 is a similar view showing K the carriage stop lifted to idle position to" enable the carriage to be returned past the margin gage, the rack -being released from its pinion. Fig. 4 is a detail showing the positions of the locking stop or beak and its abutment when the linger-piece controlling the rack is depressed to enable the carriage to return past the margin-gage.

A' carriage l travels back andforth on p hold the rack down in mesh with its pinlon. Depression oi a finger piece 1,1 connected with one of said arms" 10 releases the rack from the pinion to free the carriage to the action ofthe spring After. a line has been written, the carriage is re?, turned to initial position, it being arrested at the left hand margin by the engagement of a stop 12 thereon with a margin gage 13 slidable alongthe rail 2 and along aguide rod Maud having a dog 15, to engage teeth 17 on the rail 2 and hold the gage where adjusted. Pressure against. a finger piece 18 on the 'dog releases the gage to enable it to be'adjusted along the rail to normally. control the width of the left hand margin.

The stop l2 may be mounted on -one arIn lf) of a margin-regulat ing lever pivoted at 21 to the carriage. Depression of the tinger piece 22a on the opposite arm 22 of said lever lifts the stop 12 out of line with the gage 13 against the tension of a returning spring 19 to enable the earriage to be re-l turned past the gage when it is desired to write in the letthand margin. The arm 19 is arrested in idle position by engagement with a part of the carriage l. j

Upon' the return ot the carriage to init-iai position (Fig. .2) and just prior to the contact of the stop' 12 with the gage '13 avlatch regulating lever is introduced beneath the gage 13 to lock the outer arm 22 oi the lever against(lepi'ession, said outer arm lying beneath the rack releasing linger piece 1l, so

2B preferably on thearm 19 ofthe marginv A that/the jar caused by the impact of the carriageagainst the gage cannot Yfree tlie carriage to the action of its spring 5 by accidentally effecting `the disengagement of the letter-spacing rackfrom its pinion. i

By depressing the finger piece 11 prior to the contact of the sto-p 12 with margin gage 13 (Fig. 3), the lever 19, 22 isvvibrated to lift the stop to; idle position and the rack 8 isby the same pressure disengagedfrom its r pinion 7 to enable the carriage to `loereturned past the gage and quickly adjusted to the desired printing pointin the margin.

,i The' rack 8 has a longer throw, to release itself from the pinion than has 'the lever arm'19 to move stop 12 to idle position, and

to enable the inger-piecell when depressed a to complete its stro-ke7 after the lever 19, 22 has been arrested, as Well as to hold the lever and the stop 12 idle, during its stroke,

.the linger-piece 11 has a forwardly projecting beak or stop 24 about touching an abutment 25 on the arm 22 of the margin regulating lever. i

The abutment-,by arresting the stop 24, yprevents .the accidental release of the rack 8 from its pinion 7 at the contact of the stop 12 With the gage 13. When the finger-piece 11 is depressed (Fig. 3)/the end of the beak or stop 24 depresses the arm 22 ofthe margin-regulatinglever until the'stop 12 has been lifted to idle position, whereupon the end of said beak rides oft the abutment owing to its arc of movement relatively to the latter, the inclined under face 2Gof the beak then engaging the abutment to hold the lever depressed,`as the finger piece completes its stroke, (Fig. 4). ,y Having thus described my invention, I claim: Y v l 1. In a typevvriting machine, the combin nation with a carriage driven in letter-spacing direction and returnable to initial positlon, and means to arrest the earrlage, of carriage-feed mechanism .mcludm'g escapement members mounted -on the carriage andy the frame respectively, the escapement memframe, and .means latching with the mar-4 gin gagefat the Contact of said carriage with said gage, to lock 'the esca-pement members together.

ing' direction and returnable to initial position, and carriage feed mechanism includ- 30 ing an escapement on the frame, anda movable rack on the carriage meshing with said` escapement, of a lever carrying a leclrfor said rack effective at the moment when the 'carriage reaches initial position, and means g5 for moving said lever torender the lock ineii'ective. i y 5. In a'typei'vriting machine, the combination with a carriage driven in letter-spacing direction and returnable to initial position, a margin gage to arrest the carriage at the beginning of a line, carriage feed mech- Vanism including a swinging rack on the carriage, and an escapement pinion with i. -which the rack meshes, of a lock in contact Vwith the margin gage at the arrest 'of the carriage, to hold the rack in mesh with said pinion. 6. Ina typewrit'ing machine, the combination with a carriage driven in letter-spacing` ydirection and returnable to initial position, l

an escapement pinion, a swinging rack meshing therewith, a rack-releasing linger-piece, i a. stop on the carriage, and a margin gage in the path of the stop to arrest the carriage at5105 initial position, of a locking lever held 1 against; vibration at the arrest of the car-,Qv

riage, and engaged by the tingerlpiece to prevent the disengagement of the rack and 1 its pinion. l 1.1

7. 4In a typevvriting machine, the combi-- z nation with a carriage driven in letter-spacing direction and returnable to initial position, an escapement pinion, and a swinging rack in mesh 'with the pinion, of a stop con- 115 nected' with the rack, a lever, one arm of which lies in position lto be struck by the stop7 and means to arrest the carriage at the beginning of a line and to lock the lever against vibration to prevent the disengage-`12o ment of the rack and pinion. l

8; In a'typewriting machine, the combination with a carriage driven in letter-spacing direction and returnable to initial position, an escapement-piuion and as winging rack in mesh/withthe pinion, a lever on the carriage having a stop, and amargin gage struck by the stop to arrest `the carriage at, the beginning of a line, of-a latch on said .lever to catch undertake gage whentbeearriage is brought to the beginning of a line to lock the lever against vibration, and a stop connected with the rack and lying in position toy contact With 'the lever, to lock the rack against displacement relatively to its pinion When the carriage is arrested on its return.

9. In a .typeWi'iting machine, the combination With a carriage driven in letter-spacing direction, and returnable to the beginning of a line, an escapement pinion, a swinging rackon the carri'age normally in mesh With the pinion, of a lever on the car-- riage having a latch to engage afixed part to hold the lever against vibration, at the arrest of the carriage, and an abutment on the lever to lock the rack against release from its pinion. f

l0. In a typewriting machine, the combination With a carriage driveni'n letter-spacing direction, and returnable to the beginning of a line, an escapement pinion, a swinging rack on the carriage normally in mesh with the pinion, a finger-piece to release the rack, of a lever on the carriage,l

means to lock the lever against vibration upon the arrest of the carriage, and an abutment on the lever engaged by a stop on the finger-piece to prevent accidental disengagev ment of the rack and pinion.

11. Ina typevvriting machine, the combination with a carriage driven in letter-spacing direction, and returnable to the beginning of a line, anv escapement pinion, a swinging rack on the carriage normally in mesh with the pinion, a lever on the carriage, a stop on one arm of the lever` and a, margin gage struck by the stop to arrest the carriage on its return, of a linger-piece on the rack, overhanging the opposite armk of the lever to release the rack from`it-s` pinion and move the'stop to idle position, and a. latch to lock the lever and finger-piece against vibration upon the arrest of the carriage.

l2. In a typewriting machine, the combination with a carriage driven in letter-spacing direct-ion, and returnable to the beginning of aline, an escapement mechanism including a pinion and' a rack pivoted to the carriage to mesh with the pinion and feed the carriage step-by-step, a stop on the carriageto strike a gage on the frame to arrest the carriage on its return, a margin-regulating lever, one arm of Which supports the stop, an abutment on the opposite outer arm of the lever, a rack-releasing finger-piece having a beak With an inclined under face projecting over the abutment, and having a greater throw than the lever, to shift the stop to idle position and hold it'idle While the rack is being released.

13. In a typewriting machine, the combination With a carriage driven in letter-spacing direction and returnable to the beginning of a line, a swinging escapement member on the carriage to coperate with an escapement member on the frame to i'eed` the carriage step-by-step, a linger-piece to release the swinging escapement member from its co-acting member, a gage on the frame struck by a stop on the carriage to arrest the lab,a r at the beginning of a line, a margin regfluilating lever supporting said stop fon one `arm, arstop on the finger-piece to engage theopposite arm of the lever to shift the mailgin stop to idle position When t-he releasablej escapement member is disengaged, and a latch on said lever to catclb under the gage to lockthe escapement members against disengagement at thel arrest of t-ke carriage.

14. In a typewriting machine, Ithe combination with a carriage .which is dfriven by a spring in letter-spacing direction aiid is re turned to the beginning of a line by hand, a margin gage struck by a stop on the carriage to arrest the latter on its return,sai,.ly carriage being prevented from jumping in letter-spacing direction upon its arrest by` a latch on one arm of a lever Which catches -beneath a fixed part, as the margin gage, the opposite arm of said lever lying in the path of a inger-piece'connected to a rack in mesh with an escapement pinion to lock the rack against disengagement from the pinion.

CORNELIUS B. CORCORAN. `Witnessesz K. FRANKFORD, C. RIPLEY.

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