US855052A - Attachment for type-writers. - Google Patents

Description

PATE TB MAY 28,1907.

- H. B'. PEBIGER: ATTAGHM ENT FOR TYPE WRITERS;

' APPLIOATION FILED 001e, 1906.

'UNHEE srs'rns Parana @FFICE.

ATTAGHNIENT FQF! TYPE WHITERS.

Specification of Letters Patent.

Patented May 28, 1907.

Application filed October 6,1905. Serial No. 281,627.

To all whom it may concern:

Be it known that I, HENRY B. FEBIGER, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful-Attachment for T e-lVriters, of which the following is. a specification.

My invention consists of a new and useful attachment for typewriters and consists of means for preventing movement of the carriage, even after the escapement of the dogs has taken place, until the type has printed.

It further consists of novel details of con struction, all as will be hereinafter fully set forth. y Figure 1 represents a partial elevation and partial sectional view of a portion of the typewriter showing the attachment in position. Fig. 2 representsa plan view of my device showing the esoapement. Fig. 3 represents "a plan view of a bailemployed. Figs. 4 and 5''represent views of a portion of my attachv ment on an enlarged scale, showing the parts responding parts in the figures.

indifferent positions. Fig. 6 represents a side elevation of the esca ement' dogs.

- Similar numerals of re erenoe indicate cor- Referring to .the drawings: 1 designates the frame of a typewriter having the usual top plate 2 and the usual key levers 3, the same being in suitable connection with the keys 4. v

5 designates the universal bar which is mounted in theifram'e of the typewriter as usual and which is connected by means of the escapement rods 6 with the arms 7 which latter are connected or form part of the escape,

merit bar 8, the latter carrying in the present instance, the escapement dogs 9 and 10 one of which. is the movable dog and both of qwhic'h are. adapted to engage, at the proper f time, with the teeth. of the rack 11.

12 designatesa spring which is connected to each of thetype bar levers 3 and with a suitable portion of the frame of the machine i' or holding the same in. horizontal position. The rack 11 is carried by the carriage 13 which ismoved in the usual mannorand having the usual platen 14. thereon and provided. with the roller bearings 15 which more on the ordinary track on the frame the ma chine.

It will be seen that the parts thus far described are those usual to a typewriter, the key levers being adapted to actuate the type in the usual manner when any of the keys are depressed and at the same time actuate the escapementdogs 9 and 10 in such a way that the rack is released and the fcarriage13 moved in the proper direction. I have found, it is possible, in this 'cpnstruction, that the carriage may be moved befpre the type has printed and before the type bar has completed its full stroke, and in order to insure the proper movement of the-carriage and to prevent improper movement, I have PI'Q': vided the attachment which prevents this movement, even after the escapement of the dogs has taken place until the" proper time, that is to say by means of my invention I am enabled to lock the carriage against move- 7 While I have shown the attachment as ap-- plied to a typewriter solely, it'will be understood that the same is especially ada tedior use where adding machines are emp oyed in conjunction with the tyfiewriter but as the,

operation of the parts W1 be the same under all circumstances, for simplicity of explanation and understanding, I have shown the attachment as applied to a typewriter..

Suitably connected with the frame 1 of the machine, I provide a bail 16 which may be swinging or otherwise, the same having suitable openings 17 therein, through which pass screws 18 with which the key lever 3 co-ac't -when depressed, it being noted thatthese screwsform an adjustable feature and can be ap lied to only such key levers as it is desired liaaving the balance of the levers independent of this movement. Connected with thebail i6 is a connecting rod 19 which is suitably secured to the bell crank lever 20 the same being mounted upon the shaft 21 which is suitably mounted inxi'lherecess 22 of an auxiliary frame 23, the latterbeing suitably secured Ito the top plate 2 of the ma'- chine by'any suitable means.

24 designates a pawl which is pivotally connected with the upper arm of the bell crank lever 20 the end of said pawl engaging with the teeth on spur tvheel 25, the latter being secured to or forming part of the car-- riage stop 26 which is adapted to rotate and is mounted upon the pin 27 which is carried or mounted in the arm 28 of the auxiliary IIO" r openings or passages 29, adjacent its periphery, said openings being so formed as to pass the teeth of the rack 11 as best understood 1 from Fig. l, while the wings 30 of said car ria-ge stop being so formed as to pass between the teeth of the rack, as best understood from Figs. 2' and 5 and prevent movement of said rack as will be further explained.

31 designates a carriage stop springlock which is carried by a spring 32 suitably mounted on the arm 28 and which spring lock is adapted to engage with the .teeth of the spur wheel 25, to prevent improper movement thereof, while permitting rotation when properly actuated by the p sh pawl 24, the latter being held in suitable-engagement with the Wheel25 by means of the spring 33;

34 designates a spring suitably connected ,to a. stationary portion of the frame 1 of the machine and with one arm of the bell crank lever 20 in order to hold, the same in proper positionand toreturn the par-ts to their normal position after a key has been struck. V

The operation is as foliowsz' When one of the keys 4 is depressed the same lowers the key lever 3 which contacts with the universal bar 5 and. lowers the escapement rods 6. This actuates the arms 7 which, are connected witl1 the bar 8, which carries the escapement. Before the escap'ement rods are lowered the the upper or movable dog-9 is iii engagement with one of the teeth of the rack 11 but as the connecting rods are lowered the movable dog is raised and freed from engagement wi th the teeth of the said rack 1.1 and brings the lower or rigid dog 10 in engagement therewith, in order to hold the rack and with it the carriage, it being understood of course, that the upper dog; as soon as raised, is forced over, laterallyin the usual manner, ready for engagement with the next succeeding tooth, so that when the he y is released the rigid dog 10 is lowered and the movable dog 9 engages with the next tooth, the carriage having been moved the required distance and the car-- riageis held in its proper place for the non printing, it being understood that as the movement of the carriage and the GSCZIIXF ment just described oi the ordinary form used in typewriters, a further description, therefore, at this time is de med unnecessary.

It will be understood that the oscapement takes place at a certain point in the movement of the key lever. As the key 1- is depressed, although it :may not have com pleted its full stroke, the escapenrcnt can work, and the carriage will be moved to the left without any impression ofthe type being made, and in order to positively prevent this, my attachment, the operation of which will be now described, is empioyed.

mom of the carriage can occur.

As one of the keys, 4, which is in suitable connection with the attachment, is depressed, the key lever 3 contacts with the swinging bail depressin f the same and lowering the connecting rod 19,.which being in suitable connection with one of the arms oi the bell crank lever 20, actuates the same causing the upper arm to move inwardly and the push pawl 2-4 to be moved in the direction indicated by the arrow at a, Fig. 5, which rotates the spur wheel 25 and the carriage stop 26, the parts being so arranged that the push pawl rotates the spur wheel and with it the carriage stop 26 tosuch a position that the next succeeding opening 29, of the carriage stop, is in proper position with respect to the rack '11, to permit passage thereof when the key 4 has been depressed to its full extent and the type made its impression. It being understood that at the same time the escapement is operated to actuate the carriage. Should the key 4 be only partly depressed, that is. to the point where the es capement takes place, the pawl rotates the stop 26 sufficiently to place one of the wings 30 between the teeth of the rack 11. so that although the escapement may have, taken place the movement of the carriageiffi is prevented until the key 4 has been depressed the full amount to properly place an opening in line with the rack and the type has made its impression. It will be seen from this that if the keys are properly struck that the escapement and the carriage stop are jointly actuated-provided the key is one of those which it is desired should actuate the carriage strip and the operation of the machine is not changed in any manner, but should the key l inly partly depressed, for any reason, inl tuo position so thatthe escapement can amour, although the type is not printed, it will be seen that the carriage stop does not permit movement of the carriage until the proper time. AS stated above, while I have shown the attachment in conjunction with the typewriter, of usual construction, attention is directed to the fact as already stated, i at this carriage stop attachment is particuiarly adapted to typcwriters which have an adding machine attaclnnent, since in. machines of this character the numeral keys actuate the disks of the adding machine and as it is absolutely essontial that the adding machine should be periect and infallible it is necessary that no improper escapement and consequent move- It will be readily zuapreciated that the addition of a column of figures would be entirely thrown out and would be incorrect, should the said IOQ tact with the type bar levers of the numeral keys.

Itwill be seen that of course any proper escapement may be employed in co11]unc tion with my attachment and although I have described the dog escapement the roftary escapement l 3 sired.

may be employed if de- I It will be evident that various changes ]may be made by those skilled in ,the' art which'will come within the scope of rny-invention, and I do not, therefore, desire tov be I limited in'every instance to the exact construction herein shown and described.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: l

1. In a typewriter, a carriage, an escapement adapted to release the carriage step by step and independent means, operated by the partial-depression of a key, for preventing improper movement of the carriage by such partial depression.

2; In a typewriter, a carriage, an escapement adapted to release the carriage step by step, and a carriage stop or look, operated by the partial depression of a key, adapted to prevent movement of the carriage by such partial depression of the key at each step of the carriage until the type has printed.-

3, In a typewriter, printing keys, a car riage, an esca einent adapted to release the carriage step y step, a carriage stop operated by a partial depression of a printing key to lock the carriage, and means actuating the 3 same", by such partial depression, whereby improper movement of the carriage is prevented during its entire passage across the machine.

4. Ina typewriter, acarriage, an escape ment, and a carriage stop or look operated y the partial depression of a key, whereby the carriage is halted, by such partial depression after each eseapement has taken place, until the tyipe has printed.

.5. n a typewriter, a carriage, an escapement adapted to release the carriage step by step and a carriage stop or lock operated by the partial depression of a key and adapted to hold the carriage by such partial depression 'at each step of the carriage until the type has printed.

6. In a typewriter, a carriage, an escapement and Separate means operated bya partial depression ,ofa key, for preventing improper movement of the carriage when actuated by such partial depression, until each type bar -kcy lever, when actuated, has

reached the bottom of its stroke.

7. Inc. typewriter, carriage, an escape- Inent'therei'or, means lor actuating said escapement, a bail operated the type bar lock the carriage by such partial depression. at each step of the carriage until the type has printed.

8.'In a typewriter, a carriage, an escape ment therefor adapted to release the carriage step by step, means for actuating said escapement, a bail, means for operating said bail'and said actuating means, a carriage stop adapted to lock the carriage at each step riage stop and a connection between said pawl and said bail.

9. In a typewriter, a carriage, an escapestep by step, means for actuating said escapement, a bailadapted to be actuated withthe escapement by the movement of the type bar lever, a pawl in suitable connection with said bail, a carriage stop adapted to lock thee-arriagc, on a partial depression of a key lever at each step of thecarriage, and to be actuated proper return of said stop.

10. In a typewriter, a carriage, a rack thereon, an escapement therefor, means for actuating said escapement, a bail suitably supported and actuated with said escapeinent, a pawl in suitable connection with said bail, a carriagestop'having openings therein and adapted to pass the rack on said carriage and means on said-stop adapted to engage with the teeth of said rack and prevent i1nproper movement thereof.

11. In a typewriter, the combination of'a key lever, a rack, an escapcment, a carriage, means for bringing said carriage step by step across the printing point,-a stop that prevents the movement of; the carriage at each step thereof until an ellectivc depression of the key lever is made and'ineans for actuating said stop.

ver, an .escapenient, a stop independent of said escapcinent normally permitting move ment oi the carriage for locking said carriage until an eil'lective depression of the key lever has been made and means whereby said escapeinent and said step aresimultaneously actuated by the movement of the key lever.

.13. In a typewriter, a carriage, an escapement mechanism therefor to permit a step by step movement of the carriage and indepemh ent locking means for the carriage normally in unlocking position and adapted to prevent keys are sulliciently depressed to cause an ell eotive movement of the printing devices. 1a. In a typwriter, a carriage, an escapement mechanism therefor and independent locking means operated step by step with the carriage to prevent inowinent thereof until ment therefor, adapted to release the carriage 12. In a typewriter, a carriage, a key lethe movement thereof until the operating-- levers and a carriage stop in suit able connection with said bail and adapted to be actuated by the partial depression of a key to thereof against improper manipulation of the I operator, a push pawl for actuating said carby said pawl and means for preventing imthe operating keys are sufliciently depressed to cause fieetive movement of-the printing devices and permit movement thereof When the operating keys are sufficiently depressed 5 to cause an effective movement of the printing devices.

15. In a typewriter, a printing key lever, an esospement suitably actuated and separate means normally in unlocking position and 1p aeuteted by said lever for locking the carriage until an effective depression of the printing key lever has been made.

16. In a typewriter, printing key levers, an eseepement adapted to release thecer- 15 riege step by st p and independent means normelly in unlocking position and actuated by Sitld levers for locking the carriage against movement until an effective depression of e key lever has been made.

17., In a typewriter, a carriage, an escape 2o ment mechanism therefor, a type bar key lever and independent locking means for the carriage to prevent movement thereof until the type bar key lever is sufficiently dcpressed to cause an effective movement of 2 5 the printingdevices. V

HENRY Bl FEBIGER.

Witnesses: v

JOHN, A. Wmnmnsnnm, WM. CANER 'Wrnnnnsnnr.

Images