US1807648A - Typewriting machine - Google Patents

Description

l n 2,1931. E. E. BARNE IY 1,807,648

- TYPEWRITING MACHINE Filed Nov. 20. 1928 2 Sheets-Sheet l III/1 P INVNTOR 4 m 61 Q3 QM/Z;

ATTO R N EY E. E. BARNEY 1,807,648

'wyrawanxne mcnmz I Filed Nov. 20. 1928 2 Sheets-Sheet: 2

June 2, 1931.

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ATTO R N KY "lulli WITNESSES Patented June 2, 1931 UNITED- STATES.-

PATENT OFFICE EDWIN E. BARNEY, OF N EW RQCHELLE, NEW YOlR-K, ASSIGNOR TO REMINGTON TYPE- WRITER COMPANY, OF ILION NEW YORK, .A. CORPORATIQN. OF NEW YORK TYPEWRITING MACHINE 'Application filed November 20, 1928. Serial No. 320.639.

My invention relates to typewriting' machines and more particularly tomeans for automatically releasing the case-shiftmechanism and permitting a return thereof to nor- 5 mal position. a

1 in portable typewriting machines it is desirable to enelosethe machine within a carrying case not materially larger than the machine contained therein and to have contacts 15 on the cover of the case which coact with parts of the machine to hold them against movement when the machine is enclosed within its case.

It sometimes occurs that an operator will inadvertently leave the machine with the case-shifted part, say the carriage,locked in the case-shifted position, which increases the normal dimensions of the machine. An attempt at this timelto close the cover, will re:

sult in straining the parts and possiblyinjuring or breaking either the machine, its cover, or both. It is advisable, therefore, in such machines that some means be provided to assure the restoration of thecase-shi fted ,5 part to normal position before enclosing the machine within its carrying; case. In the patent to Charles E. Smith, '#1,4:69,054, dated Sept. 25, 1923, on which the present in vention is an improvement, the case-shift lock is automatically released from locked position by an actuation of the means by which the type bars are collapsed preparatory to enclosing'the machine within its case. Such mechanism, however, would not be available in the present instance, since; there is no such collapsing of the'type bars.

The main object of my present invention is, therefore, to provide novel meansfor overcoming the difficulties hereinbefore pointed out, and which while automatic in their action are not dependent for operationon a collapsible part of the typewriting machine, and are applicable to a machine in which there are no such collapsible parts.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction,arrangements of parts and combinations of devicesset forth in the following description and particulars ly pointed out in; the accompanyingclaims.

In the drawings wherein like reference characters represent corresponding parts in the dilferent views:

Fig. 1 is a vertical, fore and aft sectional:

view of a typewriting machine and associated parts embodying my invention, parts of the machine being omitted.

Fig. 2 is a side view of the carrying case with a part thereof broken away and with the cover shown closed, enclosing the machine ready for transportation.

Fig. 3 is a detail, fragmentary, perspective view of a portion of the cover ofthe carrying case.

Fig. 4: is a detail top plan view of a portion of the machine, parts being omitted in order to more clearly disclose the case-shift mechanism and the means by which it is automati cally released from locked position.

In the present instance I have shown. my invention embodied'in a portable typewriting machine resembling in some of its features the Remington portable machine, though differing in other respects from that machine as at present manufactured, as will hereinafter appear. While my. present invention may be readily embodied in the machine disclosed herein at small expense, it should be understood: that the invention. is not restricted to embodiment in such machine but-may be employed in typewriting machines generally, wherever found available.

The carrying case for the machine, in the present instance, comprises a flat typewriter baseboard 1, which also constitutes the bot tom of the carrying case, and a cover desig nated as a whole by the reference numeral 2. This'cover has a front wall 3, side walls 4, a rear wall 5 and a top wall 6, and is provided at its front walhwith ahandle 7 by which the carrying case and the machine contained therein may be carried. The cover is detachably'hingedto the rear edge of the baseboard, so that the cover may be swung baclr and detached therefrom, leaving the machine which is secured to the baseboard ready for use, whetherthe latter is supported omthe-knees ofthe operator, asaa lap board, or is sup ported on a table or other form of support.

,iThe means disclosed in the, present; instance by which the cover may be detachably hinged to the baseboard are those commonly employed in the Remington portable machine and comprise metal plates 8 (F 3) secured to the rear wall 5 of the cover and each apertured at 9 to receive a companion lug or fin ger 10 projecting from the rear edge of the baseboard. Each plate 8 also has a forward projecting finger 11 which, as indicated in Fig. 1, is adapted to overlie the companion projection 10 on the baseboard and the upper side of the baseboard itself.

These devices enable the cover to be swung forward and downward around the rear edge of the baseboard and to be secured thereto at the front end by a suitable catch and lock, members of which are indicated at 13 and 14. When the cover is closed the machine is enclosed ready for transportation. When the cover is swung back around its detachable hinge members .10. 11 it may be detached and removed from the baseboard and the machine we will assume is ready for use.

In the present machine, unlike the Remington portable machine now on the market, it is unnecessary to move the type bars 15 around their pivots 16 from an inoperative, substantially horizontal, position, to an up right position in order to condition the machine for use. In the present construction each type bar 15 is normally supported in a slightly inclined position and has a segmental heel with teeth 17 that intermesh with teeth 18, on an associated sub-lever 19 pivoted at 20. Each sub-lever has connected to its forward end a depending link 21 which in turn is connected at its lower endto a key lever (not shown) by which the companion type bar is actuated.

The case-shift mechanism is like that employed in the Remington portable machine and is substantially the same as that disclosed in the patent to H. E. Bridgwater. No. 1,442,792. dated Jan. 23, 1923, and will now be described.

The platen 22 is carried by a carriage 23 having end plates 24. The carriage is mounted to travel from side-to-side of the machine over a carriage support or member 25 and to bear on interposed anti-friction rollers 26. Upright links or arms 2'? are pivoted to the carriage support 25 to support it for caseshifting' movement fore and aft of the machine. The member 25 is supported on parallel side arms or members 29 arranged close to the sides of the machine and extending fore and aft thereof. Each side arm 29 is pivoted at its forward end. at 30, to an upright link 31. pivoted at its lower end, at- 32. to aside of the frame of the machine. An upwardly extending stop arm 33 is fixed to each side arm 29 and coacts with adjustable stops 34 and 35 to limit the fore and aft case-shift ing movements of the side arms 29 and the parts carried thereby including the carriage.

Springs 36 tend to return the shifted parts to their normal, forward, or lower case position. whereas springs 37 tend to counteract the weight of the carriage.

The means for effecting a rearward caseshifting displacement of the platen to upper case position include a centrally disposed shift link 38 pivoted at its rear twisted end, at 39, to a bracket plate 40 secured to the carriage support 25. The forward end of the link 38 is pivoted at 41 to an upright crank arm 42 centrally located on a rock shaft 43 mounted at its ends in hearings in the sides of the machine frame. Near the left hand end of the shaft 43 is fixed a rearwardly extending crank arm 44 provided with an anti-friction roller 45 on the free end and at one side thereof. A case-shift key lever 46, pivoted at 47 and provided with a finger key 48, has a depending projection 49 which, on the depression of the key 48, coacts With the roller 45 to rock the arm 44, shaft 43 and crank arm 42. The effect of this is to produce a rearward shift of the link 38 and the carriage support 25, thus shifting the carriage and platen to upper case position. When pressure is released on the shift key 48, the shifted parts will be returned to normal or lower case position by the springs 36.

Corresponding case-shift devices are mounted at the opposite side of the machine including a case-shift key 50, its key lever 51, crank arm 52, and anti-friction roller 53. These parts function at the right hand side of the machine the same as the corresponding parts at the left hand side.

The left hand shift key lever 46 has an upwardly projecting extension 54 on which is pivoted, at 55, a case-shift locking key-lever 56, provided with a key 57 and a depending locking arm 58. This arm terminates in an engaging or looking member 59 adapted to coact with a cooperative engaging or locking member 60 carried by the frame of the machine. In the present instance the engaging member 60 is in the nature of a stiff leaf spring secured at its upper end at 61 to a guide comb or plate 62 fastened to the machine frame. The stem of a headed screw 63 passes freely through an offset opening in the leaf spring 60 and is threaded into coincident tapped openings in the guide comb 62. and in a block or plate 64 secured to the rear side thereof to give the comb plate increased thickness at this point. The headed screw 63 provides means by which the lower end of the stiff sprin 60 may be adjusted in order that it will properly coact with the engaging member 59, as shown in full lines in Fig. 1. to lock the carriage in its shifted position when it is shifted to such position by the depression of the key 57. A spring 56 tends normally to maintain the case-shift locking lever 56 in, and return it to, the relation it normally has to the case-shift lever 4.62 by which. it iscarried.

From an inspection of Fig. 2. it willbe seen that the rear wall 5. of the carrying case is provided with contacts each of which, when the cover is closed, bears against the rearwardly projecting end of an end plate 24 of the carriage and holds the carriage in. its normal position and against case-shifting movement therefrom. There are preferably two of these contacts, one located near each side wall 4 of the cover and they are preferably made of rubber or some such suitable material. There are also provided on the top wall 6 of the cover two contacts 66 that proect downward therefrom, and when the cover isclosed bear against the top of the platen.

It will be understood that should the operator inadvertently leave the case-shift mechanism locked, as indicated in full lines in Fig. 1, thiswould result in the carriage being fixedly held in the upper case position fur ther rearward than is shown in Fig. 2. It follows that an attempt to force the cover to its closed position at this time would be apt to result in injury to either the machine, its cover, or both. It is one of the main objects of the present invention to provide novel means for overcoming this difliculty as will presently appear.

The case-shift mechanism and carrying case as thus far described are virtually the same as those employed in the Remington portable machine.

In accordance with my present invention I have combined with the above described case-shift mechanism very simple means for automatically releasing it before thema: chine can be entirely enclosed within its car'- rying case, in the event that the operator should inadvertently leave such mechanism locked, thereby preventing injury to the machine, or the cover, or both. Such means will now be described.

The guide comb or plate 62, and block 64 carried thereby, are' pierced with coincident holes which constitute bearing openings in which is received a trip, releasing member or slide, designated as a whole by the reference numeral 67. This memberextends fore and aft of the machine from front to rear thereof and is adapted to slide longitudinally in'its bearing openings. The member 67, in the present instance, is formed from a single piece of wire with a right angle bend 68 therein near its forward end. The part 68 coacts withthe rock shaft 43' to limit the rearward sliding movement of the member 67 The rear end portion of thewi-re is looped to provide a contact portion 69 that normally projectsbeyond" the rear edge of and just above the baseboard 1 A continuation of this contact provides: an arm 70 which extends forward over the baseboard a short distance parallel with thebodyptirtionof the slide. This arm 70 passes through bearing openings in the upright parallel parts 71 and 72 of the frame of the machine in order to provide a support for the slide 67 at the rear end thereof and prevent it from. turning in its bearings.

I preferably,.though not necessarily, provide a contact 73 on the rear wall 5 of the cover to coact with the contact 69 on the slide. The contact 7 3 may be of rubber or other suitable material and is so positioned on. the cover-that it will coact with and shift the slide 67 forward, from the full to the dotted line position in Fig. 1, during a swinging pivotal movement of the cover around the rear edge of the baseboard to closed position. This forward sliding displanement of the member 67 is against the force of a spring 74 connected at one end to an car 75 of a sheet metal sleeve secured to the slide or trip 67. The other end of this spring is anchored to a pin 76 projecting in from the left hand side of the machine frame. The forward free end of the slide 67 is located in the same fore and aft vertical plane as, and to the rear of, the lower end of the depending arm 58 of the case-shift locking-lever, in a position to coact therewith.

From the foregoing it will be understood that in the event of the operator inadvertently leaving the case-shift mechanism locked, the parts will remain positioned as indicated in full lines in Fig. 1' inasmuch as the train of connections between each case shift key and the carriage is such that when the case shift lock is effective the carriage cannot be returned to normal position until the case shift'l'ock is released. If at this time the operator should attempt to close the cover there will be no. injury to the parts inasmuch as such closing of the cover will result in shifting the slide or trip 67 forward from the full to the dotted line position in Fig. 1. This will result in shifting the locking lever 56 and disengaging it from the coactingengaging member 60, after which the spring 56 is efiective to restore the locking lever to its normal position relative to the case-shift lever 46. When this is effected the shift key. 7

lever 46 is elevated to normal position by its spring 77, and the springs 36 return the remainder of the caseshift mechanism and the carriage to normal position.

. The construction and relative arrangement of the parts are such that the slide or trip 67 will be actuated by the cover to release the locked case-shift mechanism and permit such mechanism and the carriage to be restored to normal position before the contacts 65 reach the end plates 2& of the carria e, and before the contacts 66 are brought to bear on the top of the platen.

i It will be s'eenthat by my invention- I have pendent for operation on a collapsible part of the machine for actuation, but, nevertheless, ensure the conditioning of the machine for enclosure within the carrying case before such case can be closed.

it will be understood, moreover, that the novel devices of my invention may be readily incorporated in a machine such as is inclicated without modifying, or materially modifying, any of the structural features thereof.

It. also will he understood that, if desired, the novel means of the present invention. may be readily incorporated in the Remington portable machine as it is now marketed, ant employed to replace the automatic case-shift lock releasingdevices usually employed therein. which are disclosed in the patent to J. B. Holden, No. 1,487,103, dated March 18, 1924.

Vhile the devices of the invention may be readily incorporated in the above mentioned machines without changing, or materially changing, the existing structural features thereof it should be understood that the invention may be embodied in various styles of typewriting machines, and that various changes may be made without departing from the invention as it is defined in the accompanying claims.

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

1. The combination of a platen, printing instrumentalities, case-shifting means for effecting a relative case-shifting movement between the platen and printing instrumentalities and for locking the shifted element in its shifted position, an enclosing case for the machine including a cover, and means con trolled by the closing of said cover for automatically releasing the locked case-shifting means in the event that they were left locked in shifted position prior to closing the cover.

2. The combination of a key controlled case-shift locking-device, a locking member with which it coacts to lock the case-shifted cle sent in shifted position, an enclosing case for the machine, and a trip actuated by a member of said case and coacting with said locking-device to release it from its coacting locking member.

3. The combination of a key controlled case-shift locking-device, a locking member with which it coacts to lock the case-shifted element in shifted position, an enclosing case for the machine, and a trip comprising a member that extends fore and aft of the machine and coacts at its forward end with the case-shift locking-device and at its rear end provides an actuating contact with which a member of said case coacts to shift the trip and release the case-shift locking-device if the latter be in the locked position.

4L. The combination of a key controlled case-shift locking-device, a locking member with which it coacts to lock the case-shifted element in shifted position, an enclosing case for the machine including a cover, and a trip consisting of a slide that extends fore and aft of the machine from the t to rear thereof and is mounted for gitudinal movement fore and aft of the machine, said slide at its forward end coacting with said case-shift lockingdevice to shift it to releasing position and extending at its rear end into the path of the cover of said case for actuating the slide during the closing of the cover.

5. The combination of a key controlled case-shift locking-device, a locking member with which it coacts to lock the case-shifted element in shifted position, and enclosing case for the machine, and a trip actuated by a member of said case and coact-ing with said locking device to release it from its coacting locking member, said trip comprising a wire slide bent at one end to provide an auxiliary arm parallel with the body portion of the slide, both the body portion and auxiliary arm of the slide being mounted to slide in bearing openings in its support.

6. The combination of a case-shift key lever, a key controlled case-shift locking-lever pivoted thereon, an engaging member with which said locking-lever engages to lock the case-shift key lever in its actuated position, an enclosing case for the machine including a cover, and a trip coactin g with said locking-lever to release it from said engaging member and permit the case-shift key lever and the parts controlled thereby to return to normal position, said trip extending into the path of the cover of the case and actuated thereby in closing the cover.

7. The combination of a key controlled case-shift locking device; a case for the machine comprising a baseboard to which the machine is attached, and a cover that is detachably hinged to the baseboard in the rear of the machine and surrounds the machine on all sides and at the top when the cover is closed; and a trip in the nature of a slide carried by the machine and mounted for movement fore and aft thereof, said slide (:0- acting at its forward end with said caseshift locking-device to release it and at its other end projecting beyond the baseboard to be actuated by the cover when it receives a movement to closed position around its hinges.

8. The combination of an element mounted to receive a case shifting movement, a shift lock for locking said element in shifted position, a case shift key, intermediate actuating connections between said case shift key and said element that prevent the return of the latter to normal position when the case shift lock is effective, an enclo e case for the machine, and means controlled by :1

member of said case for automatically releasing said case shift lock.

9. The combination of a carriage mounted to receive a case shifting movement, a case shift lock for locking the carriage in shifted position, a case shift key, intermediate actuating connections between said case shift key and the carriage that prevent the return of the latter to normal position when the case shift lock is effective, an enclosing case for the machine including a cover, and means controlled by the closing of said cover for automatically releasing said case shift lock in the event that it has been inadvertently left in the locked condition.

Signed at Stamford, in the county of F airfield and State of Connecticut, this 19th day of November A. D. 1928.

EDWIN E. BARNEY.

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