US1233936A - Type-writing machine. - Google Patents

Description

Il. J. THURLQW.

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` 1,233,936.. i 4 imma Ju1y17, 1917. I.

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n. 1. 4THLHlLow.. TYPE WRITING MACHINE. 4 APPLICfTIOI FILED IUAV. 21| Ulli. 17,

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l' Hl-lRLOW.

' r TYPE WRITING .lACHlNl-l. maman mtg lov'. 2|. ma. Y 1,233,936. mama July 17, 1917, v 4 umn-sunt o. Y

VII. '11111 1111; 111

REGINAL) J THURLOW, OF ALEXANDER, NORTH DAKTA.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented .i niy 1"?, 191'7'.

i Application filed November 21, 1916. Serial No, 132,629.

T aU lwhom it may concern.'

Be it known that l. RnoiNALD J. THUR Low, a citizen oi the United States, residing ,at Alexander, in the county of McKenzie 5 and State of North Dakota, have invented new and useful Improvements in Type- Writing Machines, of which the following is a specification.

This invention relates to tj'ypewriting machines, and it has for its object to produce an attachment of simple and improved construction including, a motor whereby the operator will be relieved oi ay large proportion of the Strain` and stress of operating the machine, particularly7 as regards the striking ot the keys and the return of the carriage and. advancing of the paper.,

A further object ot' the invention is to produce a simple and'improved device which may be `utilized as an attachment to a conventional typewritiug machine or which may be permanently installed or built into such machine, the same including a keyboard corresponding to the keyboard 'of the typewriting machine and having a correspomling set of keys, by the manipulation of which .niet-.ln anism will be set in motion whereby the keys of the typewriter will be actuated.

A further object of the invention is to produce a simple and improved device of the character described having actuating keys by the manipulation of which the keys oi' the typewriter'will be mechanically actuated not merely once, but the operatonbcing repeated as long as the key of the attachment is maintained `in a depressed position, thus' enablingr any yclnu'arter to be depressed as many times as may be desired witlnini. naanipulating the. actuatingattarhmeot but once.

A 'turtller object ot the inventi-"ni is to produce a simple and improved device \\"lu-,reb v. by 'the manipulation of a single' TWith these and other ends in View which will readily appear as the nature of the in.- vention is better understood, the same c011- in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accoml'vanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood..` that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope. of the claims may be resorted to when desired.

In the drai'vings- Figure 1 is a. diagrammatic top plan View et' al ty}Je\'\'1iting machine equipped with the improved attachment.

Fig. 2 is a diagrammatic side view of the same.

F ig. 3 is 'a side elevation oma larger scale showing a portion of a typewriting machine and a. portion of the attaclnjnent.l i

F 4 is a side elevation Talso. on a larger scale of the forward portion of the attachment. g

Fig. 5 is a sectional view, enlarged. taken on the line 5-5 in IfigQl, and illustrating the mechanism for actuating the typewriter keys.

Fig. G is a View similar to Fig. showing the parts in. a different position.

F ig. 7 is a transverse sectional detail, view taken on the line 7-7 in Fig.

Fig. S is a detail plan` View of the means for actuating the shift key of the typewriter. Fig. Q is a detailv side view ol' the same.4 Corresponding parts in the several figures are denoted by like cha factors of reference.

A typewriting machine A of conventional construction Yhas been slunvn mounted on a hase B which also supports the improved fjiperating attachment as well as the motor for actuating! the driven parts, said motor' lil-ing preferably an electric motor of any iflesired type which supplied by a feed wire l) and which includes a main driven shaft E and a counter shaft F from which motion is transmitted through intermeshing gears (i to the main driven shaft lwhicli.

may thus be constantly driven, said shaft 15 carries at its forward end a pinion 17 meshing with a bevel gear 18 on a transversely disposed counter shaft 19 which will in the direction indicated piece 31 to aiiord access to the thus be constantly driven when the motor is in operation. The counter shaft 19 is supported forV rotation in the casing 20 ot the improved attachment. The casing 2O is provided atv its forward end with a key- Oard, the keys of which, 21, correspond with the keys 22 of the typewriting machine A, being arranged in the customarymanner in tiers or banks.

Each key 21-is mounted on the forward end of a lever 23 fulcrumed on a shaft 24 that extends transversely through the casing, each lever having at its rearward end an upwardly extending arm 25 provided with a tooth 26. The casing 20 has a housing or magazine 27 in which a plurality of rods 28 are supported for vertical slidable movement, there being one such rod for each character key of the machine. Anti-friction bearings 29 are provided for the rods in order to reduce friction and wear, and each of the rods 28 is actuated in a-downward direction by means of a spring 30. The magazine 27 has a removable cap or top interior for the purpose of cleaning and lubricating the parts when needed. Each rod 28 has a notch 32 engaged by the tooth 26 of the arm 25 extending upwardly from one of the leversll 23, said levers being actuated in an upward direction by Fmeans of springs 33l arranged underneath, and the rods 28 being thus supported in normal or initial position; that is to say, the rods 28'will be normally supported by the i-nterengaging'teeth 26 and notches 32, said teeth being normally held inV engagement with the notches by the springs 33, whereby the levers 23'are actuated. Each rod 28 carries at its lower end an eccentric wheel or disk 34, the 4pivotal supports of said eccentric vdisks or cams being located in the vertical plane of the axis -of the shaft 19, the latter being equipped with a roller 35 which isV normally driven by the arrow a. .Each rod 28 is provided with a spring 36 having-a struck up lug or detent 37 that normally engages a beveled notch 38 in the disk orcam 34 which will thereby be sup'- ported normally with the major part of 'its'- ody in a yraised position with respect to the pivot member 39 by which it is mounted upon or connected with the rod 28, said s ring detent serving also to arrest or stop the rotation of the. cam member at the proper time when said cam member has been set 1n motion, as will be presently descrlbed.

It will be--seen that by depressing the key i' 21 of one of the levers 23 the tooth 26 Will disengaged from the notch 32, causing the rod 28 to be depressed, partly by gravity and partly by the vaction 'of thel spring 30, thereby pressing the cam member 34 in engagement with the roller 35, by the rotation of which the cam rotated about the axis of the pivot member V39, the

power imparted by the fricltional engagement of the cam member 34 ler 35 being sufficient to disen' with the ro gage the spring detent 37 from the notch 28. If the key 21 is released immediately .after being depressed, the lever 23 will be actuated by the spring 33 to move the tooth 26 in the path of the n'otclt 32. The rotation member willl be of'the cam member 34 will thus' result in i is stopped by engagement of the spring "f-fdetent 37 with the notch 38. If, however,

the key 21 is maintained in a depressed condition, the reciprocatory motion of the rod 28 will continue until stopped by the release of the k'ey, because .until such release is effected the cam member 34 will be heldin enga by the action of t e spring 30, and the force 30 and then permittingement with the roller 35,

sulicient to continue exerted being sullicient to overcome the frictional resistance of the spring detent 37.

' Each rod 28 has a' laterally extending arm 40 with which is operatively connected one arm of va lever 41, the other arm of which carries a spring 42,4 through which is threaded a set screw 43 engaging the typewriter key 22 which corres ends to the attachment key 21, associate with the lever whereby the rod 28 is released, there being a rod 28 and a lever 41 for each character.

key of the typewriter and the attachment. The keys 41 are fulcrulned on shafts44 lydifferent planes to support the respective 'levers 41 in the most convenient positions. relatively that are to be actuated thereby. The spring 42 of each lever 41 is bent vso that the terminal portion of said spring will be depressed beneath the point of the set screw 43, and it will be readily understood that l.by proper adjustment of the set screw the impact or pressure of the lever on the typewriter key may be varied, according tow-ether' a hard or a rela-tively soft blow is required. It will thus be. seen that in a machine used for heavy work` and where much manifolding is required, it will be possible to adjust the mechanism so that the keys will be struck relatively hard, when ordinary work not requiring ioo to the typewriter keys i much manifolding is required the force or impact of the blows may be modulated. In like manner it will be seen that the keys of small i sharp letters and of punctuation marks may be arranged to receive blows of less force than those of the large letters,

so as to avoid puncturing of the paper.

Pivotally supported, as at 45, on the frame of the t ewnter A, or in any convenient location, 1s a `lever 46 adjacent to one end of which a` drum` 47 is supported for rotai porting the drum carrying end of the lever relation to the constantliylI 46 `in 1ts normal position. Thelever 46 is located above and in substantially parallel driven shaft 15, and the last mentioned s aft carries a spur Wheel 54 located directly below the spur wheel 48fj'of the `drum 47 and capable of meshing therewith. A flexible element, such as a cord 55, one end of which is connected link or rod 61 casing of keys 21 to a` conveni with and wound upon the drum 47, is uided under a guide pu1 ley"56 which is ocated below 'the drum. and fromy thence the cord 55 is guided to the return lever- 57 of the typewriter carriage 58, the cord bein connected. with the return lever, as s own. Suitable guide means are to be provided for the cord 55, one suchbein shown as consisting of a pulley 56. A bell crank 58 fulcrumed at 60 has one arm extended in the path of the ty ewriter carriage, the other arm of said bell)crank'being connected by a Withthe arm of the lever 46 oppositeto` that `which carries the drum 47.

"I he tooth'carrying arm of the bell crank 51 1s, connected by arod 62 with a lever 63 which is fulcrumed at 64 on the keyboard the attachment. The lever 63 has been shown as extending slightly above the ent position for being manil'mlated bythe operator, and said lever i may be equipped with a pressure button 65 to enable it to be actuated byy pressure exerted obliquelv in a downward direction. It will be seen t at by actuatin this lever the bell crank 51 'may be rocke to disengage the tooth 50 from the notch 49, thus pei.'- mitting the arm of the lever 46 carrying the drum 47 to gra vitate downwardly until thespur wheel 48 xiieslies Withthe constantly driven spur wheel 54. The cord. 55 being thus placed under tension will exert "adownward stress on the drum 47,"wherebyxthe` spur wheels-4 8 and 54 will be maintained in engaging. position, this being due to the` fact that the cord is guided beneath'the pulley 56. The winding of the cord on the pulley will tension the said cord to actuate the return lever of the carriagev which will nowbe returned. to its startin point. the carriage returns it strikes t "ebell crank 5 9, rocking the same and through it and the -connecting rod lthe lever 46 which is thus p restored to" its initial position, the. catch 49 being engaged bythe tooth 50ct` the spring actuated bell crank 51 which is released as soon as the operator releases the lever 63.

lt is obvious that as soon as the carriage 'Y moves out of engagement with the bell crank 59, the operation may be repeated, irrespective of the precise locatlon of the carriage on its track.

It desirable that the keys should be l locked against possibility of movement while the carriage isbein returned, and inorder' that this may be e ected there is provided for each rod 28 a toothedv catch member 66, A said catch members being [pivotally mounted on a transversely dispose rod 67, and said catch members being connected in serles by a transverse connecting rod 68. Each catch `member is adapted to engage a notch 69 in the rod 28 with which it is associated, but the catch members are balanced in such a Way that they will gra'vitationally swing clear 'of thenotches 69, said catch members being thus normally idle. The operating rod 68 is terminally connected by a rod or link 70 with the lever 63 so that by the aus operation of said lever to disengage the i toothed arzn of the bell crank 51 from the notch 49 of the lever 46, the catch mem bers 66 will be simultaneously actuated or thrown into engagement with the notches 69 i of the respective rods 28, said rodsfbeing thus positively locked against the possibility of downward movement. As soon as the lever 63 is released .the parts will be restored to normal or initial position.

For the purpose of actuating the shift keys of the typewriter special means are re-` quired owing to the fact that the shift keys are located at a distance from the keyboard of the attachment. The shift key 71 of the typewriter is actuated ci' depressed by onel arm of i lever 72 fulcrumed at 73 the other arm of which is connected with and actu- A ated by one arm of a lever 74 fulcrumed at 75. and the other arm of which carries the pressure button 76. The levers 72 and 74 are iulcrumed eXteriol-ly on the side wall of the 4aieschment casing 20, and said levers are terminally bent` as shown at 77, 78. the v bent end 77 engaging the pressure button of the shift key carries the pressure button 76.

colmection with the drawings hereto an:` maxed, the operation and advantages of this 7while the bent endg78' ici-2.1 From the foregoing! description, taken in invention will be readily understood. By

the use of the'improved device or attachment speed may be gained, and the strength of the operator may be conserved since but very slight eiort is required to depress the keys 21 and 65 whereby the mechanism is set in motion that actuates the keys of the typewriter as well as the carriage to eiectfthe return movement of the latter. The actual power required for these operations is provided by the motor C, and by the means herein described, the power for actuating the typewriter keys may be modulated or varied.

The casing of the improved device or attachment has been shown as being equipped with a detachable cover member 79 which may be secured by fastening members 80 in such fashion as to permit its ready removal to aiord access to the mechanism contained in the casing.

Having thus described the invention, what is claimed as new, is

1. In a device of the class described, a rod supported for vertical reciprocation, a key actuating lever operatively connected vwith said rod, an eccentric disk pivotally connected with t/ef,y rod, and a constantly rotatin roller a ap'ted to engage the disk to pro uce reciprocatory motion of the rod.

v2. In a device of/the class described, .a rod supported f r yertical reciprocationfa key actuatingll lever operativelyconnected with said ro an eccentric disk pivotally connected with the rod, and a constantly rotatin 'roller' adapted to engage the disk to pro uce reciprocatory motion of the rod; and spring means whereby the rod carrying the eccentric disk is forced in the direction of the constantly rotating roller.

3. In a device of the class described, a, rod supported for verticalreciprocation, a key actuating lever operatively connected f'with said rod, an eccentrlc disk pivotally connected with the rod, and a constantly rotatin roller adapted to engage the disk to pro ucc reciprocatory motion of the rod; and spring means w vereby the rod carrying the eccentric disk is .-forced in the direction of the constantly rotating roller; in combination with key actuated supporting means whereby the disk carrying rod may be normally supported intermediate the limits of its reciprocating( movement.

4. In a device of the class described, a rod supported for vertical reciprocation, a key actuatin lever operatively connected with said r an eccentric disk pivotally connected with the rod, and a constantly rotating roller adapted to engage the disk to roduce reciprocatory motlon of the rod; andJ spring means whereby the rod carrying the eccentric disk is forced in the d1rection of the constantly rotating roller; in com- 1 its movement.

bination with key actuated .supporting means whereby the disk carrying rod may be normally supported intermediate the limits of its reciprocatory movement; and means whereby the eccentric disk may be supported against rotation.

5. In a device of the class'described, a rod supported for vertical reciprocation, a key actuating lever operatively connected with said rod, an eccentric disk or cam pivotallyV connected with the rod, said disk having an inclined notch, and a spring detent carried by the rod and adapted forengagement with said notch to obstruct rotation of the disk.

6. In a device of the class described, a rod supported for vertical reciprocation, a key actuating lever operatively. connected with said rod, an eccentric disk or cam pivotally connected with the rod, said disk having an inclined notch, and a spring detent carried by the rod and adapted for engagement with said notch to obstruct rotation of the disk, in combination with a constantlv rotating roller` and spring means whereby the disk carrying rod may be forced in the direction of said roller.

7 In a device of the class described, a rod supported for vertical reciprocation, a key actuating lever operatively connected with said rod, an eccentric disk or cam pivotally connected with the rod, said disk having an y inclined notch, and a spring detent carriedl by the rod and adapted for engagement with said notch to obstruct rotation of the disk, in combination with a constantly rotating roller and spring means wherebyv the disk carrying rod may be forced in the direction of said roller; and key actuated means` whereby the disk carryin rod may be normally supported interme iate the limits of 8. Ina device of the class described,` a rod supported for vertical reciprocation, an eccentric disk or cam ivotally connected therewith, a constant y rotating roller v adapted to be engaged by the disk to produce reciprocatory motion of the rod, and a sprin detent carried by the rod to engage the disk and to obstruct rotation thereof,

said rod having a notch; and a key actuat direction of the roller.

In testimon whereof I aix my signature in presenceo two wtn.

REGINALD J. 'JJJEIURLOW` Witnesses:

J um E. ,Tmmnom EDGAR H. THUnmw.

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