US1100795A

US1100795A - Type-writing machine.

Info

Publication number: US1100795A
Application number: US624827A
Authority: US
Inventors: Charles H Vogel
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1910-08-22
Filing date: 1911-05-03
Publication date: 1914-06-23
Anticipated expiration: 1931-06-23

Description

c.v H. VOGEL. mm: `WRITING; MACHINE. j `.lu'lfLIoA'noll rum) ina, 1911.' v 1,100,795.. I Patented June 23,1914

I 2 SHEETS-SHEET 1.

` mvEN'ToR:

WITNES' ESQ i cpu. VOGEL.- TYPI. WRITING MACHINE. APILIOATIOI FILED KAY 3, I911.

Patented June 23, 1914.

2 SHEETS-SHEET z.

,y UNITED STATES.'

o HARLnsjH. VOGEL, 'or VANCOUVER, '.Bm'risncontribua, CANADA, s'sIaNon. To

l UNDERWOOD TYPEWm'rER COMPANY,

.nnLAWARn'- Specification of Letters Patent.

carica orfNnw YORK, N. y., n' OonronArIoN or 'rvrnvvnirINe MAoiIiNE.

- Patented June 23, l1914.

Original applicationled August 22, 1910, Serial No. 578,457. Divided andthis application led May 3,'

" 1911. seria1N.e24,s27; l

T al? whom it may concern Be it known that I, CHARLES H. VOGEL,`a subject of the King of England, residing in Vancouver, in Athe county` of- Vancouver',

l Province of'BritishfColu1nbia'Dominion of` Canada, have` invented certain newV and useful Improvements in Type Writing' Ma-4 tion.

-- This invention relates tO the type action of chines,.of which lthe following is a' specifica- Y. writing machines and-is a division of application No. 578,457, led August'22, 1910. The object of the invention is to produce a simple and eiiicient type-action in which the keys may be operated with 'a very light slight depression of a key operates mecha.-

nism to complete the depressionof the key. I may accomplish this with electrical means, by closing a circuit in the initial movement of the depressed key. Electromagnets in the circuit may then complete the depression of the key and effect or assist in'etlecting the completion of Vthe printing stroke of the;

type, relieving the operator of labor' 'and also securing uniform strokes ofthe type bars.

Other features andadvantages will hereinafter appear.

In the accompanying drawings,

which control the type action. This .v iew shows the mechanism in the normal positlon. Fig. 2 is a viewsimilar to -Fig.1, but showing the. devicein operation, and illustrating how the solenoids operate to actuate the" type bar. Fig.' 3 is 'a horizontal section, taken nezr oney of the side plates of the typewriter frame, andl further illustrating details of construction for closing the contacts which control the circuits through the solenoids. Fig. el is a side view largely v,diagrammaticy, showing two lkey levers,I one of which is partly depressed. Fig. 5 is a -plan vieur showing lseveral key levers diagrammati` cally. s e n g n.

Key levers 1 are mounted upon'a fulcrum. bar 2 ltovmrdthe rear of the frame, andtheirv lower edges are just above a universalbar Figure 1', is a diagrammatic view, showing part of a typen'riting. machine in vertical section, and I illustrating' the arrangement of solenoids' 3, disposed transversely to the frame and l mounted o n swinging arms 4.-,pivotally held on a horizontal fixedshaft 5', 'so that when'the keys arev depressed, .the universal barswings down; and a spring. 6 is provided"bet-ween the side wall A andlarm lfor returning the universal lbar after universal bar moves down,it carries with it an adjustable Contact arm 7, which is'adjustably attached to one of the arms' l'by means lof-aslot 8 andan adjusting screw 9. y The lower, end of this arm'has-'a laterally ro? A jecting-contact pm 10j, in the path of w 'ch lIlles' an 4insulated contactl 'plate 11 (on al being depressed. As the swinging support 33).. Conductor- 13f is connected to plate 11,'and-conductor V12` is* connectedV tpin 10, .therebytofclose'a ci-` cuit through a depressingl soleneidyl-gfiand coil' and causes it 'to dawfj'forwardly an armature 16, sairl-l armaturebeing attached to a stem 17', whicheirtends rearwardly. from .a transverse universalbar'lr.

"A erysli ht depressionof'; lie-,key lever 'closes the-circuit, and asfthefbar-"Jmoves forwardly, its' 'forward beveledsedge 19 -proiets dwn from each key lever. leverv more completely, and swings lever 22 'on its fulcruni 23 through theaction ,of a pin24, working in a slot 25, and the -sub I lever actuates a type bar 26, which is hung upon a segment 27 inthe usual manner.

on rocker arms 28.

The conductor 30 is attached to y 33, so that when the rocker arm is aj inst The forward end of the-bar 18is'supporttdthe spring 32, as in its normal postlon, a circuit is closed throughcoil 31 and the ene'rgized coil 31 keepsthe armature 16 pulled and the rocker arm iexes a return spring 35,

vsimilar to the spring 32; and when-the pin 10 has passed below the lower edgeofthe fioo contact plate 11,- the spring 35 swings the Y a battery' 15 in` this; circuit the normal position.

v has been touched;l and it should be underl arm 33 back to its normalvertical position.

When the 4pin 10 'passesun'derj the c ontact press it 'and' actuate thetype bars 26. As

soon las the spring 35 has returned the rocker 33 to its normal vertical position, the circuit l through the

conductors

29 and 30 and the battery 30a is again closed, 'and the solenoid coil 31 draws back the bar 18. y

The spring 6 in returning the universal bar 3, will .return all ofthe keys 1, butif desired., al return-'lug-36 may be provided onthe under side of, each-key, as shown in .dotted lines in Figs. 1 and 2. This returnlug or cam is inclined like the lug'21, so that as the bar 18 is pulled back,-its beveled rear edge 37 strikes thev inclined forward .edge of the lug 36, and pushes the key backto its It should beunderstood that inthe normal position of the keys, the lower ends ot the ylugs are above the bar 18, so that as4 this bar advances under the action ofthe coil 14,

`it can strike the lug only of the key. which stood that by` adjusting the arm 7, themechanism can be arranged so that .avery slight ldepression of the key will close the circuit through the solenoid 14, whereupon no further depressingforce need beexerted by the operator, for the coil 14 ,then completes the type movement.

When-the universal b'aryf3 returns, thepin 10 rides up idly past thebplate 11 on the.

' front, which is insulated at 40, so that cirtion, a key lever, anfelectric .circuit adapted -cuit through 12 and 13 is not closedat this time. The arm 33 yields byr'swingin'g over.

'against spring 32 to permit the pin 10 to rise, and is then restored 4by spring 32.` y It will be observed that from some points ot view the'v bar 18 and the electro-magnet 31 may be regarded as aretracting device for the type bars.

` Variations may be resorted-to within the scope of the invention. v

Having thus described-.my invention, I claim: Y 1. In a typewriting machine, in combinato be closed bythe depression thereof, electro-magnetic means in said, circuit to complete the depression of said key lever, and electro-magnetic means for returning said key lever after depression.

'2. In a typewrlting machine, in combina# tion, a key 'lever-,land electric circuit, a con? tact member. adapted to move when said key is depressed, 'ia movable contact plate cooperating therewithto. close saidycircuin a coil, in said circuit,` and means controlled "therebyto complete. the depression of said key lever after said' circuit is closed, said movable Contact plate being adapted to break the circuit before said key leve'rl iscompletely depressed,- a second coil, and

means to close a circuit through said second coil to return said key' lever.

3. In a typevvriting machine, in combination, a key lever, a contact member adapted -to be depressed thereby, a contact plate in the path of said contact .member and yadapted to -bedisplaced by said contact member, so as to pass out of the path thereof', an

electric circuit passing through' said contact member and said Contact plate, and electri- 4'cally controlled means for depressing saidl key lever after slaidl circuit is closed and for returning saidkey. A

4.Y In aktypewriting machine, incombination, la key lever, a contact pin adapted to be moved when said key is depressed, a .contact plate l in the path of said pin and adaptedftobe displaced thereby, an electric circuit closed through said pin and contact plate, 'a coil in said circuit, a bar controlled by said coil and' adapted to be advanced thereby, said bar engaging said lever to depress the same, and an velectric circuit automatically closed for returning said bar.

5. In a-typewriting,` machine, incombination, a key lever, a contact pin adapted to be displaced when said key lever is depressed, a swinging contact plate in the path of said pin, an: electric circuit passingv through said pin and said contact plate, a coil in saidV circuit, a bar controlled Aby said coil and adapted to depress said key after said circuit is closed, when said. pin strikes said contact plate, a second electric circuit closed when said contact plate isinits normal position, and a coil in said second electric circuit'for returning said bar.

6. In a typewrit'ingmachlne, 1n combination, a key lever, a circuit adapted'to be closed by the depression of said key lever, .a'

coil in said circuit, a bar controlled by said coil, said key lever having a projection adapted to be engaged by said bar to depress said key, and havin a second projection adapted tobe engage by said bar to return said key lever.

7. In a typewriting machine,t he cornbina-A tion, a key lever, a circuit adapted to be closed by the depression of said key' lever,

a coil in said circuit, a bar controlled' by said coil, said key lever having a projection in the path of said bar to be engaged thereby,-

and having a second projection adapted to be engaged by said bar to .return said key lever, and means for returning said bar.'

8. In a typewriting mac@e, in combination, a plurality of key levers, a universal bar ladapted to be depressed by said keys, an'adjustable arm carried thereby, a contact pin on said arm, a Contact plate in the path of said pin, an electric circuitadapted to be Aclosed bythe contact ofsaid pin and said.

plate, a type bar, and electricall controlled means for actuating said type ar in each direction.' 4 i 9. In a typewriting machine, in combination, a key lever, a contactpin adapted to be displaced thereby, a lcontact plate in the path of said pin, resilient means for-normally holding said contact plate in the path of said'pin, an electrically controlled device in said circuit for completing the depression of said keylever after said circuit is closed,

' a second electric circuit adapted vto be opened when said contact plate is displaced by said pin, said electric device including a bar adapted to engage the key lever to-depress the same, and al coil in said second circuit forv returning said bar.'

10. In a typewriting machine, the combination with a key lever, of a universal bar.

operated by said lever, a contact point on said universal bar, la swinging arm carrying a terminal arranged to complete a circuit through said contact point to depress said lever, a spring'arranged to hold saidswinging arm so ,that it is returned to normal positi'on 'at the completion of the stroke of said key lever, and a second contact point arranged to close a circuit to positively return said key lever.

11. In a typewriting machine, the c0mbination of a series offindependent type-carriers, av series of operating keys therefor, a retracting bar, means lfor connecting said bar with any carrier at theprinting point,

an electromagnet for moving said retractng.; bar, and meansV for operating; said magnet.

12. In a typewriting machine, in combination of a series of independent typelbars, a yseries of operating keys, means for ad vancing a type-bar to printing position, a normal said typeebar, and means for connecting said type-bar and retreating bar.

CHARLES H. voelen.4

Witnesses:v Gr.' C. WOODWARD,

A. E. GALPIN'.

y disconnected retracting bar for