US1592461A - Typewriting machine - Google Patents

Description

J. B. HOLDEN TYPEWRITING momma Filed Nov. 13,-

1924 2 Sheets-Sheet l p llL Z INVENTOR A'rfoRNEY WITNESSE J. B. HOLDEN TYPEWRITING MACHINE Filed Nov. 13, 1924 July 13,1926.

' "2 Sheets-Sheet 2 INVENTOR M ATTORNEY Patented July 13, 1926.

UNITED ;.S'I:-ATES PATIENT OFFICE."

.rosnrn n. nommn, or SYRACUSE, new YORK, assrenon TO ma -m TYPE warren COMPANY, cannon, NEW YORIQ'A coaronamzon or new Yonz.

'rrrnwnmme Macrame. I

jppllqltion and November is, 924. semi no. 749,679.

My invention relates to typewriting or like machines and more particularly to th paper feedmechanism thereof.

he main object of my invention, genera ally stated, is to provide simple'paper feed releasing means which are inexpensive to manufacture, are highly efficient in use, are easy to assemble in the machine or'replace, and are not liable to beco me injured or broken. V

To the above and other ends which will hereinafter appear, my invention consists in the featuresv of construction, combinations of devices, andarran 'ements of parts hereinafter described an out in the appended claims.

'In the accompanying drawings, wherein like reference characters indicate correspending parts in the different views,

Figure 1 is a detail fragmentary rear elevation of the carriage of a Remingtonportable machine equipped with the devices of my invention, and with. parts omitted.

Figure 2 is a detail fragmentary top plan view of the same.

Figure 3 is an enlarged detail fragmentary transverse sectional view taken on the I line 3 3 of Fig. 2 and looking in the direction of the arrows at said line. 30 Figure 4 is a like view taken on the line 4-4 of Fig. 2 and looking inthedirection of the arrows at said line.

Figure 5 is an enlarged detail perspective is view of the holding spring for the releasing.

means shown detached. p

Figure 6 is a detail perspective view of the floating feed roll releasing member shown detached and with the spring removed therefrom.

Figure 8 is a like view of the same except that the parts are shown disposed as they appear wnen the feed rolls are locked off.

*igure 9 is afragmentary detail top lan view of certain of the parts shown in ig.

7 disposed as the parts appear in said fi ure.v

Figure 10 a like view of the same s owing the parts as they are disposed in F1 8.

the present instance, in altemington portparticularly pointed Figure 7 is an enlarged detail transverse sectional view taken through the carriage on I have shown my invention embodie in able machine, in which the invention may be readily incorporated with but little change. It should bev understood, however, that the invention is not restricted to embodiment in such machinebut may be emplo ed in typewriting or like machinesgeneral y, wherever found available. q

The present construction is in the nature of an m rovement on those disclosed in my Patent" o. 1,458,133 dated June 12th, 1923,

in my application Sr. No. 7 23,489 filed July 1, 1924 and in the a plication of Herbert. o. 729,225, filed July E. Bridgwater, Sr. 31,1924. 7

The carriage of the Remington portable machine comprises a. main body plate 1 provided with end plates 2 each formed with a foot piece 3 by which it issecured to the body portion 1 of the carriage. The end plates are provided with bearings to receive a platenspindle 4 on which the platen 5 is mounted. The usual paper apron 5 been omitted to avoid confusing the illustration.

Bracket plates 6 are secured by, screws 7 to the upper side of the body plate 1 of the carriage, and each of said plates 6 is formed with rear bearings 8 andfront bearings 9. The rear bearings receive pivot rods 10 that also extend through bearin s 11 on a feed. roll support or carrier 12 tiat extends longitudinally substantially throughout the len 11 of the platen. The carrier 12, which t us pivotally mounted on the carriage to swing towards and away from the paten, is

in the nature of a comparatively thin sheet metal strip or plate. For reasonswhich will hereinafter appear it was found necessary heretofore to strengthen this strip 19 by a reinforcing channel bar of sheet metal, sub-- stantially U-shaped in cross section, which was secured to the strip 12 at the front side thereof and extended longitudinally substantial-ly throughout the length of said strip. By my present invention I am enabled to dispense with this reinforcing bar, for reasons which will presently appear. Loosely connected at 13 to the carrier 12 are two roll holders 14. Feedrollsf15 are mounted in each holder at oppositesides of the associated pointof connection 13, andeach holder is guided for foreand-aft teetering movementon its connection 13 by guide finger l6, 7

as disclosed in my application Sr; 7 No. 7 23 489 hereinbefore referred to.

he bar feed. roll. carrier 12 is formed at cured by screws 20 to the carriage plate 1 about midway in the length thereof. Each end portion of this sprmg bears 'down on a projection 17 tending to turn the feed roll carrier 12 on its pivots l and move the rear feed rolls 15 thereon. V 7

Forward feed rolls 21. are mounted in a sheet metal carrier 22 provided with bearings 23 to receive'pivot rods 24; said pivot rods being supported in the forward bearings 9 on the bracket plates 6. In this manner the forward set of feed rolls 21 is pivotally mounted to'swing fore-and-aft of the machine into and out of contact with the platen, or the paper thereon. Rearwa-rdly projecting arms 25 are formed integral with the carrier 22, and extend over the arms 17 and beneath the free end portions of a against the platen, or the paper 7 spring 26 parallel with the spring 18 and'secured in .alike manner to the block 19. The spring 28 tends to force the forward feed rolls against the platen.

The parts as thus far described may be of the usual construction.

In order to release the feed rolls 15 and 21, and if necessary lock or hold them in the released positionas shown in Fig. 8, I provide the following construction :The block 19, fixed to the carriage midway in the length "thereof, is provided with upstanding projections 2i which'constitute a fixed abutment withwhich the releasing device co-acts, as will presently appear. Interposed between the rear face of this abutment and the forward face of the feed roll carrier 12 is a re-- leasing or controlling or actuating member which in the present instance ism the nature of a block or bar 28 angular in cross section.

. This bar 28, as will be seen from an inspection of Fi 3 is located about centrally of the pivoted roll carrier 12 and extends, in

the present instance, longitudinally thereof.

to about the points wherethe spring 18 exerts its force against said carrier 12 through the arms 17. The left-hand end of the an gular bar is reduced to form a bearing stud 29 which is received in an open-mouthed substantially horizontally disposed bearing slot 30. 'As best shown in Fig. 4, this hearing slot is formed in a bracket 31which has its foot piece 32 riveted at 33 to the carrier 12. A corresponding bracket 34 (see Fig. 3) is secured by screws 35 to the right-hand end of the carrier 12 to aidin supporting and guiding the releasing device. The part 28 may be regarded as a part of or a cam or enlargement on a rock shaft 36. For manufacturing purposes, however, I prefer to make the parts 28 and 36 from separate pieces and unite them by providing a hole in the right-hand end of the member 28 to receive the inner end of the rock shaft 36, as indicated in Fig. 2. The two parts may then be fixedly united by spot welding or otherwise. The outer end of the shaft 36 extends to the end of the carriage where it is bent to form a crank arm 37 provided with a finger piece 38. Said finger piece enables the operator to' rock the shaft, and the member 28 forming part thereof, from the Fig. 7 to the Fig. 8 position, or vice versa. A stop pin 39 projects inwardly from the right-hand end plate 2 of the carriage and co-acts with the crank arm 37 to limit the rocking movement of the releasing member when it reaches the Fig. 8 position. The

41 is received in this tapped opening after passing through a centrally located opening 42 in a spring member 43, shown in detail in Fig. 5. This member is in the nature of a bowed leaf spring fiexed forwardly from the screw 41 to the ends of the spring. At each end the spring is provided with ears 44 that extend rearwardly and loosely embrace the part 28 on the top and bottom sides thereof. This prevents the spring from turning on the screw 41 by which it is fas tened to the member 28, but said ears also have another function, as will presently appear. It will be understood that the spring 43 is of relatively hard metal having a smooth surface and is interposed between the part 28 and the contact faces of the abutment 27. In the back and forth rocking movements of the member 28, between the Figs. 7 and 8 positions, wear will not be on the relatively soft part 28 but will be between the abutment 27 and the forward face of spring 43 and the lower ears 44 thereon where they join the body portion of the spring. hen the parts are in the normal position, shown in Figs. 7 and 9, the spring 43'will bear against the abutment 27 and the force of the spring will be exerted to hold the member 28, and the rock shaft 36 forming part thereof, against loose turning movement, and also against a fore-and-aft bodily floating movement in the guide brackets 31 and 34. However, the power of this spring, while sufficient for the purpose stated, is ineffective to overcome the power of the springs 18 and 26 by which the feed rolls 15 and 21 are pressed against the platen.

In the operation of the releasing device, the first part of the movement thereof from the Fig. 7 to the Fig. 8 position results in compressing the flexed ends of the spring 43 against the front face of the part 28. When the spring 43 has been thus compressed further turning of the rock shaft and its member 28 will cause the latter to operate with a camming action against the abutment dead centered against t 27. This'results in effecting a slight lateral or rearward'bodily floating movementof the part 28-36 in its guides, as well as a turning movement, thereby causing the roll carrier 12 to turn on its pivots 10 and to move the feed rolls 15 away from the platen. This causes an upward movement of the arms 17 against the force of the spring 18, at thesame time carrying the arms up against the force of the spring 26, thereby releasing the forward feedrolls 21.

Whenthe releasingdevicelhas been shifted to the full extent of itsreleasing movement, shown in Figs; 8 and 10, it will be seen that opposite angular corners of'the members 28 are disposed substantially hori zontally, and the full extent of camm'ing off action has been attained. It also will be seen that at this time the force ofthe springs 18 and 26 exerted throu h the carrier 12 is he fixed abutment 27, thus holdin the parts in the released po sition indefii itely, or until the shaft is rocked in the opposite direction by the finger piece 38. I g

In assembhng the arts t is merely necesi sary to mount the single member 28-36 led in place, with the sprin -ing against the'bracket 31. Said member is 37-38 in place by'introducing it through the open-mouths into the bearing slots in the brackets 31and 34. 'When thus mount- 43 bearin against the abutment 27 s'ai member w be held against movement longitudinally of the carria e in one direction by the shoulder where the body joins the reduced end 29 bear-- held against movement inthe opposite direction by the crank arm 37 co-acting with the inner face of the right hand end plate 2 of the carriage. I

The releasing mechanism is simple, stron i l I 0 durable and effective in use and is not liable to beinjured or broken. rHowever, should the above mentioned member reqiure re moval orireplacement, for any reason, this r -may be quickly effected.

The centering of the application of power to simultaneously and uniformly release all feed rolls in the manner disclosed herein is an important factor. Thus it will be under- --st00d that by overc'omingthe resistance of i r the springsof the carriers 12 and 22 and releasing the feed rolls by force directed againstsaid carriers centrall in the lengths thereof, instead of at one en only, as in the previous constructions referred to, a more efiective release of the feed rolls maybe brought about without liability of bending or straining the comparatively light 'sheet metal from which saidcarriers are made, and'witho ut reinforcing and strengthening the parts to render the release efiective.

By extending the part 28 to the points Where the power of the springs 18 and 26 is applied to the member 12, and causing said mernber to bear against the comparatively light sheet metal member 12 throughout the distance between these points, I am enabled 1 tageous, if not absolutely essential, to make the compactly arranged parts as light as possible consistent with etiiciency of operation. From what has been said it will be'under-' stoodthat the devicesof my invention can be easily embodied in Remington portable machines without materially changing existing structural features thereof.

lVhat I claim as new and desire by Letters Patent is 1. Ina typewriting or like machine, the,

combination of a carriage, a platenv carried thereby, a series of feed rollers that extend longitudinally of said platen, a pivoted sheet metal carrier that extends substantially throughout the length of the platen and'on which said series of feed rollers is mounted, springs which apply their force to said carrier and through it to the series of feed rollers and'cause' the latter to bear against the platen or the paperthereon, and releasing means for moving said carrier Without bendingit, in order to simultaneously release all of the feed rollers of'said series, said releasing means comprising a floating rock shaft having a 'camming portion that extends longitudinally of the carriage to the point of resistance of said springs, and a fixed abutment on the carria e about .midway in the length thereof an between which abutment and carrier the cammi'ng portion of the shaft is received to coact with the carrier about midway in the 'lengththereof and at about the points 7 where the resistance of said springs is exerted against the carrier, in order to move the carrier Without bending it and thus simultaneously release the feed rollers.

2. In a typewriting or like machine, the combination'ofa carriage, a platen, a rock shaft that extends longitudinally in the direction of the travel of the carriage, slotted guides on the carriage that receive said shaft and permit it to have a back and forth movement in one direction as well as a turn ing movement, an abutment fixed on theearriage, an actuating member carried by said shaft aboutlmidway in the length of the carriage and having a camming action against said abutment when the shaft is turned in one direction thereby etfectinga lateral shifting of said actuating member and shaft, a feed roll carrier that extends to secure substantially throughout the length of the platen, a series of feed rollers that extend longitudinally of the platen and that are carried by said carrier, said carrier being controlled by a shifting movement of said actuating member, and a finger piece formed on one end of said rock shaft for turning it.

3. In a typewriting or like machine, the combination of a carriage, a rock shaft that extends longitudinally in the direction of the travel of the carriage from near one end thereof beyond a point midway in the length of the carriage, slotted guides on the carriage that receive said shaft and permit it to have a back and forth lateral movement in one direction as well as a turning movement, an abutment fixed on the carriage, a spring-pressed feed roll carrier, an angular block-like actuating member fixed to said shaft about midway in the length of the carriage and interposed between said carrier and abutment, said member having a camming action on the abutment to shift the actuating member and shaft laterally and thus shift the roll carrier with which said member also co-acts against the force of its spring, the construction and arrangement of the parts being such that said member is substantially dead centered against the action of the spring pressure of the roll carrier when the shaft is turned the limit of its movement in one direction to hold and maintain the feed rolls released, a finger piece. spring which co-acts with said shaft to prevent loose movement thereof when the shaft is in normal position.

4. In a typewriting or like machine, the combination of a carriage, a platen carried thereby, a fixed abutment on the carriage, a feed roll carrier that extends substantially throughout the length of the platen, a series of feed rollers that extend longitudinally of the platen and that are carried by said carrier, springs that act on saidcarrier to force the feed roll against the platen, a rock shaft that extends longitudinally of the carriage between said carrier and abutment, and an actuating member on said shaft that is disconnected from but coacts with said abutment and carrier to shift the feed rolls off by a camming action, said actuating member extending longitudinally of said shaft to the points of resistance of said springs against the feed roll carrier but free from the resistance of said springs when the latter press the feed rollers against the platen.

5. In a typewriting or like machine, the combination of a carriage, a platen, a fixed abutment on the carriage about midway in the length thereof, a feed roll carrier that extends substantially throughout the length for turning said rock shaft, and a of the platen, a series of feed rollers that extend lengthwise of the platen and which are carried by said carrier, springs that act on said carrier between the ends of the carriage and a point midway in the length thereof and apply their force through the carrier to the said series of feed rollers, and a hand controlled actuating member interposed between and disconnected from said abutment and carrier but coacting therewith when turned in one direction to move said carrier and release the said series of feed rolls, said actuating member contacting with said carrier intermediate the points where said springs exert their force against the carrier.

6. In a typewriting or like machine, the combination of a carriage, a platen, a fixed abutment on the carriage about midway in the length thereof, a spring-pressed feed roll carrier, a floating hand operated actuating member interposed between said abutment and carrier to shift the carrier and release the feed rolls when turned in one direction, said actuating member being normally free from the pressure of the spring or springs of said'carrier, and a spring 0 less power than that of the spring or springs of said carrier for holding the floating actuating member against free motion when the feed rolls are applied to the platen or the paper thereon.

7. In a typewriting or like machine, the combination of a carriage, a platen, a fixed abutment on the carriage, a spring-pressed feed roll carrier, a floating hand operated actuating member interposed between said abutment and carrier and operative to cam 0E the carrier and feed rolls when turned in one direction, and a relatively light spring constituting a contact face between said actuating member and abutment and tending to .hold said actuating member against free movement when the feed rolls are applied.

8. In a typewriting or like machine, the combination of a carriage, a platen, a fixed abutment on the carriage, a spring-pressed feed roll carrier, a floating hand operated actuating member interposed between said abutment and carrier and operative to cam off the carrier and feed rolls when turned in one direction, and a relatively light bowed leaf spring secured to said actuating mem' her and constituting a contact face between the latter and said abutment, said leaf spring also tending to hold said actuating member against free movement when the feed rollers are applied.

Signed at Syracuse, in the county of Onondaga and State of New York, this 7 day of November, A. D. 1924.

i JOSEPH B. HOLDEN.

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