US1053449A - Type-writing machine. - Google Patents

Description

H. E f-STEELE TYPE WRITING MACHINE.-

- 3110mm; rum) 111G. 17,. 19.11.

Patented Feb. 13, 1913.,

' I I Lg INVENTUR:

Y HI "AT EIRNE Y UNITED sTAT sIPA-TENT OFFICE.

HERBERT H. STEELE, 0F immunity-NEW YORK, ASSIGNQR 'ro THE MONARCI-I TYBEWRITER COMPANY, or sYEAcn sE, NEwYonK, A CORPORATION on NEW- YORK.

rrrn wnrrmenaonmn.

Patented Feb. 18,1913.

To all whom, it may concern.

Be it known that I, HERBERT citizen of the United States, and resident of'.

My invention relates to typewriting ma chines and more particularly .to springs for returning the type actions, or parts thereof, to normal position, and to means for controlling the action of said springs so as to' vary the effective force thereofas the same is applied to aid the return movement of the parts.

normal position without correspondingly modifying the force exerted by said springs. initially on the parts with which'they .eo-i

10; Thefsub levers are slotted at 11 in the act.

A still further o'b ect of invention is to provide improved means whereby a vari-.- ation in the touch of all' of the keys ofthe type actions may be simultaneously effected without altering or interfering with the accelerated action of the type bars.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts lnd combinations of devices to be set forth in the to lowing description and particularly pointed out in the claims.

In the drawings, Figure 1 is a fragmentary vertical central fore and aft sectional view of a typewriting machine embodying my invention. Fig. 2 is a detail fragmentary plan View of a portion of the construction represented in Fig. 1.

I have shown my invention embodied, in the present instance, in a Monarch machine but have shown only so much of said machine as may be necessary to arrive at an understanding of my invention. It should One of the main objects of my invention is to provide means for varying the efi'ective' .force of the springs to return the parts to A further object of my invent-ion provide comparatively simple and'eliicientadjustable means for varymg the effective ap i eaanimeamigan17,1912. SerialNo. 715,589. v

.be' understood, however, that the invention may be embodied in various characters of :typewritingmachines and that the'construc- 'tion may be variously modified to facilitate such embodiment. v

The frame of the" machine comprises a base 1, corner posts 2', and a to plate 3. The carriage (not'shown) may e ofthe usual or any suitable character, a cylinducal-platen 4, which is carried by the carriage, being diagrammatically represented .inFig. 1. The type actions shown in the present instance are similar to those embodied in the Monarch machine, each type bar 5 striking upwardly and. rearwardly against the front time of, the platen. Each type bar is "con nected by apull link 6 to a sub-lever 7 ,pivoted at 8 to a key lever 9, which key levers are' siibstantially horizontally disposed and' the keyboard of the-machine wherelthey are provided with finger keys usual manner for cooperation with a fixed fulcrum rod 12 which extends beneath the key levers andis fixed at its ends in the base of the machine, Each key lever is formed witha curved tread 13 adapted tobear upwardlyagainstthe-bottoni ,face of a fixed fulcrum plate 14:. The key levers are slotted at--15 for the reception of a fixed rod 16 by which th'e' key' levers are prevented from f creeping longitudinally along the fulcrum plate. The usual guide combs 17 and 18 are also provided 'for cooperation with key levers to guide them in their movements.

It will be understood that normally the forward end of the curved contact tread of each key lever bears'against the fulcrum plate, and that as the associated .finger key is depressed a rocking or rolling contact is efl'ectedbetween the curved contact tread of the key lever and the fixed fulcrum plate, thereby aflording a variation in the leverage -which ,is,efl"ective to produce an accelerated movement of the type bar in its movement toward the printing point. Each key lever has a hook-like strap 19 of the usual 0on struct-ion connected thereto at 20. The upper looped end of each strap receive. a wire returning spring 21. These springs in .the present instance are formed in pairs by eral direction as thekey levers and sublugs and being looped at one end like a hair-pin, the looped end being bent downwardly at 22 for the reception "of a log or projection 23 on across bar 24 of a support or carrier 25. The looped ends of the springs are prevented from accidental displacementfrom the lugs 23 by a plate 24f detachably secured in place on the carrier by screws and having a downwardly bent rear edge 2i thus be understood that each arm or memher .of the spring in itself constitutes a re-- turning spring 21 connected with the as sociated ty e action through a strap 19. It will be an erstood that each spring 21 bears against the upper side-of the cross bar 24 of the spring support or carrier 25, and that the springs are arranged above the key levers and extend longitudinally in the same stantiaily parallel therewith. The arrange mentof. the forward free end of each spring 21 in theloop or strap 19 of the associated key lever is such as to afiord a relative slid-' 'ing adjustment of the spring in its loop, for purposes which will hereinafter more clearly appear. The carrier 25 for the returning springs in the present instance comprime the cross bar 24 provided with therearwardly extending lugs or projections 23 and with ears 26 at the ends of the cross bar. These ears are slotted at 27, the slots extending fore and aft of the machine. Headed screws 28 are received in tapped openings in the base 1 of the machine and extend throu h the slots 27 of the carrier with the heads of the screws lowermost to support and guide the carrier on the base of themachine. The carrier is also provided with a rearwardly extending arm 29 provided .with a rack'30 on one side edge thereof tog cobperation with a pinion 31, the

i rackheing' held in mesh with the pinion by a fixed ide pin 30. This pinion is fixed n a'spinolle 32 which extends through anpening in the base of the machine. The uper end of the spindle is fix- ;-.iedly eonnee 5K whiclithe finger piece and pinion may be p to a finger piece or wheel d3 provided with a knurled portion 34; by

turned. A shouldered portion 35 on the fin- -ger piece bears against the upper side of the base of the machine to provide a sun port for the finger piece and pinion. The pinion itself bearing against the bottom wall of that portion of the base oi the machine in the spindle-82 is received, and the shout 35 bearing against the upper side of that portion of the base, prevent a vertical displacement of the pinion and finger Wheel but enable these parts to be readily turned to transmit movement to the rack 30, and to the carrier 25 with which the rack is connected.

It will be seen that a turning of the finger horizontal movement of the carrier 25 fore and aft of the machine and to simultaneously produce a corresponding bodily'movement or adjustment of all of the returning springs 21, the adjustment of the springs being in the direction-of the length thereof, and in the direction of the length of the key levers. It will also be noted that during this adjustment of the springs the free end portions thereof slide through the loops of the straps 19 so that of the springs are brought nearer to or far the! from the straps 19, depending on the adjustment of the finger piece 33. The effect of this adjustment is to simultaneously vary the efi'ect-ive lengths of all of the springs so that when said springs are flexed during the operation of the type actions greater or less force will be exerted there- ;by, depending on the adjustment of the finger piece 33 and the effective length of the springs determined by such adjustment. It will be noted, however, that the movement not alter the relations of the springs in their parallel positions with reference to the key leversj In other words, the bodily adjustment of the springs in the manner described does not flex or relax the springs the anchored ends wheel 33 is effective to producea rectilinear .95 of the returning springs during the adjustment thereof with the carrier 21 do esand therefore does not vary,-or vary to any appreciable extent, the force exerted by the springs initially on the key levers, notwithstanding the variation brought about in the effective lengths of the springs and a corresponding variation in the force exerted by the springs during lho actuation of the type actions.

It will be understood that the construction and relations of the parts are such that there is no tendency to displace the carrier from the position to which it may be adjusted and, on the olhcr hand, the i force exerted'by'the springs has a le lvlluy to maintain the carrier in the position to which it is adjusted.

' It will be seen that each spring 21, exec t at its anchored. end. is a substantially straight wire spring, the. force of whiclris exerted upwardly on the associated key lever to return it and the parts l1llt(l0(l therewith to the normal position and to main tain the curved trend of the lacy lover against the fulcrum plate with which it coopcrntcs. It will also be observed that the variation in the cii'ectivo length oi each spring in no manner alters or HHH'lllllS the accelerated action of the type bars. such the finger piece 33 outside of theframe of the machine, where it is readily accessible to the operator, enables the returning springs to be easily adjusted. The construction as a Whole is simple and efiicient and.

y readily lends itself to embodiment in existing forms of typewriting machines such as the Monarch machine, for exam 1e, without modifying, or materially m0 ifying, the

structural features-of said machines as tliey ,now exist.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combi-' nation of a key actuated member, a return ing spring therefor, and means for varying at will the efi'ecti e length of said spring,

said means comprising a support for one end of the spring, means for ,operatively 7 connecting the opposite end of said spring to said key actuated member, and adjustable means for varying the distance between said support and said connecting means for the opposite end of the spring. 4

2. In a'typewrit-in machine, the combination of'a series of toy actuated'members, a series of returning springs therefor, and

means for simultaneously varying the ef-' fective length of all of said springs.

3. In a typewritingmachine, the combination of a key actuated. member, a returning spring therefor, and means for varying the point of connection between said spring and key actuated member.

vAt. In a typewriting machine, the combination of a key actuated member, a-returning spring therefor, and hand 'actua ted adjusting means for increasing or decreasing the distance between the point of connection of the spring with said key actuated member;

and the support for the spring.

5. In a typewriting machine, the combination of a key actuated member, a returning spring connected therewith, and means for efi'ectlng a bodily substantially rectilinear adjustment of said spring to vary the effective length thereof.

6. In a typewritini machine, the combination of a series of ey actuated members, a series of returning springs therefor, means for operatively connecting the springs. with said member so as to afford a bodily adjustment of the springs relatively thereto at the point of connection of the springs, a common support for all of said springs, and means for effecting a bodily adjustment of said su )port.

. In a typewriting machine, the combiseries of returning springs, means for op eratively connecting the springs with said levers so as to afford an adjustment of the springs relatively to said levers in the general direction of the length thereof, said springs being arranged substantially parallel with those portions of said levers with which the springs are connected,"a common support-for all of said springs, and means, for effecting a substantially rectilinear adjustment of said support.

9. In a typewriting machine, the combination of a key actuated member, a returning spring -therefor, a connectionv between r said spring and member, which connection remains constant relatively to the member but affords a variation in the position of the spring relatively to said member atthc point where the spring .co-acts with connection, and adjustable means for effectin e ect saidadjustment of the spring.

10. In a typewriting machine, the combi nation of a series of keyactuated members, a series of' returning springs therefor, connections between said springs and members, which connections remain constant. relatively-to the members-but afford a variation 7 in the position of the springs relatively to said members, a common carrier for alllof said sprlngs, and means for effect ng. a

a bodily movement of said spring tobodily adjustment of said carrier and s a 11. In a typewriting mach1ne,.the oomb1-.

nation of a series of key actuated members, a series of returnlngsprin'gs therefor a common' support for said springs, saidsupport being mounted for sliding adjustment, a

rack connected with said support, a pinion meshing with said rack, and a'fi-nger piece for'turning said pinion. a

12. In a .typewriting machine, the combination of a series of key actuated levers; a-

series of returning springstherefor, said springs being arranged substantially -1par-' allel with said levers; and means 'for simultaneously varying the effective length of all of said springs, said means comprising a bodily movable cwrrier common to all of said springs for effecting a. bodily adjustment of the springs in the direction of their lengtlnandmeans for effecting a bodily adjustment of said carrier.

13. In a. typewriting machine, the combination of a series of key actuated levers; al series of returning springs therefor, said out correspondingly altering the force exertedvinitially bysaidspring on said mem I chine where it is readily" accessible to theout correspondingly springs being" arrangedsubstantially par-. allel with said levers; and means for-simultaneously varying the effective length of all of said springs, said means comprising a bodily movable carrier common to all of said springs for effecting a bodily adjustment of I the springs in the direction of their length, a rack connected with sa d carrier, a pinion meshing with said rack, and a finger piece arranged outside'of the frame of the maoperator, said finger pie'ce being connected with said pinion to control it and thus efiec't a bodily adjustment of 'the carrier and a lengthwise bodily adjustment of the'springs.

14;. In a typewritingmachine,.the combination of a key actuated lever, a returning spring connected therewith, an adjustable support for said spring, a rack connected with said support, a pinion meshing with said rack, and a finger piececonnec'ted with s'aid'pinion said finger piece being located outside the frame of themachine for ready ,manipulationto adjust said support.

15. In a typewriting machine, the combination of a key actuated Inember,.,a'returning'spring therefor, and means for varying the effective force exerted by said spring to return said member to normal position with: altering the force exerted initially by sa1 spring on saidmember.

16. In a typewriting machine, the combination of a type bar,act-uating meansthere for including means for iefiecting an acceP- 'eratioIi of thevtype bar in its movement to the printing positlon, a returning spring for" saidtype bar, and means for varying theefiective force exertedby said. spring to return saidmex'nberlto normal position with- Copies of this patentinay-be obtained for her and without affecting the acceleration of the type bar.

17. In a typewriting machine, the combination of a type bar, a key actuated lever operatively connected therewith, a fulcrum plate on which the key actuated lever has a rocking movement to effect an acceleration of the type bar as the latter moves toward key actuated lovers have a rocking motion to effect an acceleration of the type bars as they move toward the printing position, returning springs for said levers and which exert a force to maintain the levers against the fulcrum plate,"sa1d springs extending longitudinally in the same general direction asv s'aid levers, and means for efiecting a simultaneous bodily adjustment of said springs in the direction of their lengt-hto vary the eEective force of-said springs.

" ssigned at Syracuse, in the "county of Onondaga and State of New York, this 15th day of August, A. D. 1912.

HEnBEnT L STEELE. Witnesses: H. BARRY, BESSIE Kn'i'rnLL.

five cents each, by addressing,theffloxhmiesioxier of Patents. Washlngton, 0. p

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