US1884199A - Typewriting machine - Google Patents

Description

Oc't 25, 1932. J. PHELPs TYPEWRITING MACHINE 2 Sheets-Sheet Filed July 2S, 1929 INVENTOR UQ/JMM.

ATTORNEY J. 'PHELPs 1,884,199

TYPEWRITING MACHINE Oct. 25, 1932.

2 Sheets-Sheet 2 Filed July 25, 1929 v/l/A-v/l//a INVENTOR ATTO R N EY WITNESSES Patented Oct. 25, 1932 Unirse *s'rATizisl PATENT oFFicEi JOSEPH PHELPSV,OF,STAMFORD, CNNECTICUT, ASSIGNOR TO REMINGTON'TYPEWRTER COMPANY, F ILION, NEW YORK, A-CQRPORATION 0F NEW YORK i lTizrnwnrrme MACHINE Application filed July 26, 1929. vSerial No. 381,244.

My invention relates to typewriting and like machines and more particularly totabulating mechanism therefor.

One of the main objects of my invention,

generally stated, is to provide improved, simple and highly efficient automatically operating means for preventing a rebound of the carriage from the position of its arrest by the tabulator mechanism. j

'Affurther object of myv invention-is to provide eiicient means of the character specified which-may ybe effectively used in machines in which the column stops are closely arranged, one being provided for each letter' space posif tion of the carriage, and in which aseries'of denominational stops are employed to coact with those'of the column stops which are projected to operative position.

A still further object of myinvention is 20 to provide a construction lof the character indicated which -is in the natureof an'attachment lthat may lbe readily incorporated in existing machines without modifying, or materially modifying, the existing structural 2'5 features of said machines.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devicessetfforth in the following description and particularly pointed out in the appended claims. i

In the accompanying` drawings wherein like reference charactersindicate corresponding parts in the different views,

Fig. l is an enlarged, detail, fragmentary, fore and aft, vertical sectional view disclosing a part of a typewriting machine equipped with the devices of my invention, the partis being shown disposed lin normal position, and 40 the section being taken onthe line 1--1 of Fig. 4 and looking in the direction of the arrows at said line.

`Fig. 2 is a like View of a portion of the same showing the parts in the actuated position.

Fig. 8 is an enlarged, detail, transverse sectional view taken on the line 3-3 of Fig. 2 and looking in the direction of the arrows at 5 0 said line.

.-Fig. 4f isv an enlarged, detail topiplan view i' i of the parts shown in Fig. 3. Y f

I have shown my invention, in the present instance, embodied in a Remington typewrit-` ing machine equippedwith a series of column stopsarranged at letter space intervals on the carriage, andin which key set means are employed to successively proJect` the column stops intended for use to operative position for cooperation with any one of a series of key controlledY denomination stops. While the devices of my inventionl have distinct advantages, for reasons which will hereinafter appear, `m a `typewritmgor like machine of this character, it also `1s useful in various typewriting and like machines and in tabulating mechanisms which vary materially in character. It should be understood, therefore, that from certain aspects of my invention it is not restricted to embodiment in a machine and tabulating mechanism of the kind specified. j

The tabulating mechanism proper illus- Vtrated -i`n part in the drawings, and with wliichthe devices of my invention coact, vis the same as the tabulator of thisitype employed in Remington machines and will first be described. y

The frame of the machine comprises a. top plate 1 and corner posts 2 connected thereto and to abase,not shown. The carriage comprises end bars 3 and a rear cross bar 4 grooved on its rear side, atv 5, to receive crossed anti-friction yrollers 6 that are also received inthe oppositely disposed grooved face of aliXed carriage supporting raili7 secured to the top plate 1 of the machine. This,

with corresponding means (not shown) at the Vusual manner. A rack releasing pinion -13"is carriedbya rocking releasing rame 14. Vpivoted at 15 to a bracket 16 secured to the top plate of the machine. The shaft on which the pinion 13 is mounted extends into a drum 17 and carries a retarder which governs the speed of the carriage when the latter is released from the feed pinion 11 and is under control of the rack raising pinion 13. The rocking releasing frame 14 is connected through a link 18 with the usual means, (not shown) controlled by the actuation of any of the tabulator 'keys to lift the feed rack 10 and free the carriage from control of its escapement mechanism.

Each of the usual tabulator keys controls a separate denominational stop 19 carried by 'a lever 20.` These levers are pivoted at 21 in a tabulator frame 22 secured to the frame vof the machine. Each denominational stop 19 is projected to effective position, as shown in Fig. 2, when its key is actuated, thus bringing the projected stop 19 into the path of such of the column stops 23 as may be setin effective position. There are shown in the present instance ten denominational stops arranged at letter space intervals between their contact faces. The column stops 23 also are arranged at letter space intervals between contact faces and are mounted on a column stop bar 24 that extends throughout, or substantially throughout, the length of the carriage, it being understood that there are as many, or substantially as many, closely arranged stops 23 as there are letter space positions` of the carriage. The column stop bar is provided with interdental spaces at top and bottom thereof arranged at letter space intervals and in which the bifurcated column stops are adapted to slide fore and aft of the machine into and out of effective or operative position, and will be held in either of such positions by spring detents 25, one of such detents being secured to the side of each of said column stops.

The column stop bar is ixedly connected by screws 26 to bracket arms 27 which are secured at their forward ends to the rear cross bar 4 of the carriage near the ends thereof.

' Key controlled means are employed for separately projecting each of the column stops 23 to effective position, as determined by the letter space position of the carriage, and also for successively wiping said stops to ineffective position, when desired, during the travel of the carriage. Such means, however, `are not shown in the accompanying drawings, inasmuch as they are unnecessary to an understanding of the present. invention.

The devices of the present invention comi prise a bracket 28 having slots 29 in the foot piece thereof which extend lengthwise in the `direction of the travel of the carriage. The stems of headed screws 30, which ordinarily are employed for another purpose, as will presently appear, pass through the slots 29 and are received at their threaded ends in tapped openings in the top of the Les-1,19%

integral parallel side arms 31 pierced to receive a pivot rod 32. An anti-rebound carriage locking device, designated as a whole by the reference numeral 33, has integral ears 34 that are pierced to receive the pivot rod 32 and provide a pivotal support for said locking device. Split rings 35 of spring metal take in grooves in the pivot rod 32 vinside the ears 34 and prevent an accidental longitudinal displacement of the pivot rod and yet provide a simple means for assembling the parts.

A second pivot rod 36 is seated in bearing openings in the side arms 31 and is held against accidental longitudinal displacement by split, spring rings 37, in the same manner as the pivot rod 32. A yoke like controlling member, designated as a whole by the reference numeral 38, has its side arms 39 pierced to provide bearing openings for the pivot rod 36 to pass through. The lower ends of the arms 39 are united by a cross bar 40 which extends in front of all of the upper end portions of the denominational stops 19. The bar 40 constitutes a universal bar which on the projection of any of the denominational stops from the ineffective Fig. 1, to the effective Fig. 2 position, will move the universal bar 4 to the position shown in Fig. 2.

One of the arms 39 of the controlling member is provided with a rearwardly projecting arm 41 from which an inwardly directed lug 42 extends. This lug underlies a forwardly extending upwardly inclined arm 43 on the locking member, to normally hold the latter in the inoperative position, shown in Fig. 1.

A spring 44 is coiled around the pivot rod 36 and has one arm 45 that bears down on the locking member 43 and tends to press the forward end thereof down to engaging or effective position. The other arm 46 of this spring bears up against the lug 42 tending to turn the controlling member in an anticlockwise direction (as the parts appear in Fig. 1) and hold it in and return it to the normal Fig. 1 position.

The forward depending end of the locking member 33 is in the nature of a cross bar provided with as many ratchet teeth 47 thereon as there are denominational stops employed, which is ten in the present instance. Three ratchet teeth are spaced at letter space intervals and are so arranged that the abrupt face of one of them will engage the back face of one of the projected column stops 23, as

shown in Figs. 2 and 3, when such stop coacts with the projected denominational stop, and thus prevent a rebound of the carriage from said position of arrest.y In other Words the field occupied by the ten ratchet teeth 47 is the same as that occupied by the ten denominational stops 19 and the spacing between them in both instances is the same, so that-no matter which of the ten denominational stops is projected a corresponding tooth 47 will engage the arrested column stop and lock the carriage against rebound.

It is an important factor of the present invention that the anti-rebound lock remains normally ineffective and is brought into use only when a tabulator key is actuated and then only on the column stop With which the projected key controlled stop coacts. Thus, it Will be seen that when a stop 19 is projected to e'ective position it Will move the controlling member 38 from the Fig. l to the F ig. 2 position, the lcarriage at the same time being released from control of its escapement mechanism. The result of this is to immediately lower the locking member under the pressure of its spring to a position Where the teeth 47 thereon Will be in the path of the upper edge of the next advancing column stop 23 that is in effective position but Will remain out of cooperative relation with all of the column stops which are in ineffective position. When said next advancing 4projected column stop reaches the locking member 38 the inclined faces of the teeth 47 will be engaged successively by said column stop, camming the locking member 38 against its spring until the column stop in question reaches the projected denominational stop and an arrest of the carriage is effected. Immediately this takes place the abrupt face on the corresponding tooth 47 on the locking device will snap behind the back face of the said column stop and lock the carriage against rebound, the arrested column stop being engaged on its lefthand face by the projected denominational stop and on its right-hand face by a tooth 47 of the locking device.

As soon as pressure is released from the actuated tabulator key the projected denomination stop and locking device Will be Withdrawn to ineffective position and the carriage restored to control of the escapement mechanism.

It has been hereinbefore pointed out that the screws 30 Were formerly employed for other purposes. Thus it Was customary to employ a curved brace arm 48 which Was secured at one end to the tabulator frame 22 by the screws 30 and at its depending free end teminated just forward of the column stop bar 24. The purpose of this brace Was to prevent a forward fiexing of column stop bar 24 when the wiper was acting on the column stops to shift them successively to ineffective positions on the bar. In the present construction this brace is retainedand is made an integral part of the bracket 28 and performs itsusualfunctions. f

I 4am aware that heretofore ity has been proposed yto employ various forms of carriage anti-rebound devices, but various diiiiculties have been encountered inthe use thereof. In some instances theyrequire special forms of column stops or coaoting key controlled stops, requiring that the anti-rebound devices be mounted on'each of one or the other sets of such stops. It will be understood that aside from the requirement of specially constructed stops inthe present construction the close arrangement of the denominationall stops and the column stops precludes the use of any such constructions. In other forms the antirebound device is rendered effective on the carriage as soon as a tabulator key is actuated and remains eective throughout .the run of the carriage and until after the arrest of the carriage and the release of the tabulator key. Such constructions are open to certain difiiculties that the present mechanism is not subjected to.

It Will be seen, moreover, that the devices `ofthe present invention are all carried by the bracket 28 and are in the nature of an attachment that may be readily applied as a single unit to existing machines Without modifying the existing structural features of said machines, and that the devices are simple and inexpensive in construction, being made almost Wholly from sheet metal parts and are strong, reliable and eficienitiin use, and are not apt to be damaged or broken.

Various changes may be made in the construction Without departing from my invention as it is defined in the accompanying claims.

What I claim as new and desire to secure by Letters Patent is l. The combination-of a carriage, a series of denominational stops separated at letterspace intervals, a series of column stops separated at letter-space intervals and mounted for movement into and out of operative position, a locking member for locking the carriage against rebound when it is arrested by the cooperation of an effective column stop with a projected denominational stop, said locking member having ratchet teeth spaced at letter-space intervals, and automatically operating means for bringing about a movement of said locking member into cooperative relation only With the next advancing effective column stop when a denominational stop is actuated, thereby engaging said next advancing effective column stop and preventing a rebound of the carriage when such advancing column stop coacts With the projected denominational stop to arrest the carriage.

2. The combination of a carriage, a series reo of column stops carried thereby, a series of T30 key controlled coacting stops carried by the frame of the machine, a universal bar actuated by an operation of any of said key controlled stops, and a normally ineffective locking bar having ratchet teeth thereon adapted to coact with the arrested column stop to prevent a rebound of the carriage from its arrested position but not to cooperate with any other column stop, the movement of said locking bar into and out of effective position being controlled by said universal bar.

3. The combination of a carriage, a series of column stops carried thereby, a series of denominational stops carried by the frame of the machine, and means for preventing a rebound of the carriage from the position of arrest by a denomination al stop coacting With an etfective column stop, said means comprisng a supporting bracket 'adjustably and detachably mounted on the frame of the machine7 a locking member cooperative only with an effective column stop and carried by and movably mounted on said bracket, said locking member having ratchet teeth corresponding in number to the number of denominational stops, and controlling means controlled by Said denominatioi'xal stops for controlling the movement of said locking' member into and out of etlective position.

Signed at Stamford in the county of Fairlield and State of Connecticut July A. D.

JOSEPH PHELPS.

CERTIFICATE OI CORRECTION.

Patent NO. 1,884,199. October 25, 1932.

JOSEPH PHELPs.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 126, for "Three" read "These"; and that the said Letters Patent should be read with this eorreetion therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 23rd day Of May, A. D. 1933.

M. J. Moore.

(Seal) Acting Commissioner Of Patents.

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