US1820542A - Typewriting machine - Google Patents

Description

- Aug. 25, 1931. .1. PHELPS TYPEWRITI-NG MACHINE Filed March 14.

1929 2 Shet -Shee't 1 INVENIOR 6 BYQBGAL ATTORNEY WITNESSES Aug. 25, 1931". J P E 1 1,820,542

TYPEWRITING- MACHINE Filed March 14. 1929 2Sheets-Sheet 2 W Lg ha' I WITNESSES Q u; ENTOR a. UQ

ATTORNEY Patented Aug. 25, 1931 UNITED STATES PATENT, OFFICE osnrn PHELPS, OF STAMFORD, CONNECTICUT, ASSIGNOR .TO REMINGTON TYPEWRITER 'COMIPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK r rnwnrrme MACHINE I Application'filed March 14, 1929. Serial no. 346,954.

My invention relates to typewriting machines and more particularly to means for automatically releasing case-shift mechanormal position. y

In portable typewrlting machines it is ,de-

sirable to enclose the machine within-alcar-v rying case not materially larger than the machine contained therein, and to have contacts 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.

I It sometimes occurs that an operator will inadvertently leave the machine with the case-shifted part, say the carriage, locked machine with parts omitted;

in the case-shifted position, which increases the normal dimensions of the machlne. An attempt at this time to close the cover Wlll result in strainin the arts and ossibl' injuring or breaking either the machine, its cover, or both. It 1s advlsable, therefore, in such machines that some means he provided to assure the restoration of the case-shifted part to normal position before enclosing the ,machine within its carrying case. In the patent to Charles Smith, No. 1,469,054,

dated September 25, 1923, on which the present invention is an improvement," the case" the parts are-shown as they are disposed when thecase-shift frame has been shifted shift-lock is automatically released from locked position by an actuationcf the means by which the type barsare 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 omect of my present invention to a machine in which there are no collapsible type bars.

' To the-above and other ends which will hereinafter appear, my invention consists 111 the features of construction. arrangement of parts and combinations of devices set forth in the following description and-particularly pointed out in the following claims.

of: the manually controlled center-lock controlling arm.

In the drawings wherein like reference characters re resent corresponding parts in the different view-s: i

Fig. '1 is a fragmentary, fore and aft, cen-- tral, vertical sectional view of a typewriting machine embodying my invention; the car riage being shown locked in its case-shifted position; z

Fig. 2 1s a fragmentarygvertical, transverse sectional view of a portion of the'same;

Fig. '3 is an enlarged, detail, perspective view of the releasing device for the case-shiftlock to be hereinafter described;

Fig. 4 is a detail, perspective view of one of the members of the'center-lock;

Fig. 5 is a fragmentary, plan view of the 'lock is released and the case-shift frame is in its normal position I I Fig. 9 i a like View of the same except th t from normalposition and the members of the center-lock are interlocked one theother.

Fig. 10 is an enlarged, detail, fragmentary, vertical sectional View of the case-shift locking-members and somev of the associated parts; I I

Fig. 11 is a fragmentary, diagrammatic view'corresponding to Fig. 10, but showing the parts as they are disposed just prior to the instant when the case-shift-lock is released; Q i Fig. 12 is a fragmentary, perspective view In the present instance I have shown my V invention embodied in the 1929 model Remington portable I in the machine disclosed herein at small expense, it should be understood that the invention is not restricted to the 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 typewriting base board 1, which also constitutes the bottom of the carrying case, and a cover designated as a whole by the reference numeral 2. This cover has a front wall 3, side walls 4, a rear wall and a top wall 6, and is provided at its front wall with a handle 7 by which the carrying case and the machine contained therein may be carried.

The cover is detachably hinged to the rear edge of the base board so that the cover may be swung back and detached therefrom, leaving the machine which is secured to the base board ready for use whether the latter is sup ported on the knees of the operator as a lap board or is supported on a table or other form of support. The means disclosed in the 1 present instance by which the cover may be detachably hinged to the base board are those commonly employed in the Remington portable machine as heretofore marketed, and comprises metal plates 8 (Fig. 7) se- Cured to the rear wall of the cover and which are apertured at 9 to receive the companion lug or finger 10 projecting from the rear edge of the base board. Each plate 8 also has a forwardly projecting finger '11 which, as indicated in Fig. 6, is adapted to tion. When the cover is swung back around its detachable hinge members 10, 11, it may be detached and removed from the base board and the machine, we will assume, is ready for use.

In the present machine, unlike the earlier Remington portable machines, it is unnecessary to move the type bars around their pivots 16 from an inoperative, substantially horizontal position to an upright position in order to condition the machine for use; In the present construction each type bar is normally supported in a slightly inclined position and has a segmental heel with i teeth 17 that intermesh with teeth 18 on a sub-lever 19. Each sub-lever has connected to its forward end a depending link which in turn is connected at its lower end to a key lever by which thecompanion type bar is actuated. It is not deemed necessary to show these key levers and connections to the sub-levers 19.

The case-shift mechanism is like that employed in the earlier Remington portable machine and is substantially the same as that disclosed in the patent to Bridgewater, 1,442,792, dated January 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 which constitutes part of the case-shift frame, the carriage bearing on interposed anti-friction rollers 26. Upright links or arms 27 pivoted to the carriage support 25, to support it for case-shifting movement fore and aft the machine. The member 25 is supported on parallel side arms or members 29 arranged close to the sides of the machine and extend: ing fore and aft thereof. Each side arm 29 is pivoted at its forward end, at 80, to an upright link 31, pivoted at its lower end, as at.

32, to a side of the frame of the machine. An upwardly extending stop arm 33 is fixed to each side arm 29 and coacts with a-djustabl stops 34 and 35 to limit the fore and aft caseshifting movements of the side arms 29 to the parts carried thereby, including the carriage. Springs 36 tend to return the shifted parts to their normal, forward, or lower position, whereas springs 37 tend to counteract the weight of the carriage.

The means for effecting the rearward caseshifting displacement of the platen to the 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 uprightcrank arm 42 centrally located on 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 c2 e-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 to upper case position. hen pressure is released on the shift key 48 it will. be returned to normal position by a spring 46 connected to the lever and the other 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 the 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 handshift key lever upwardly projecting extension 54 on which is pivoted, at 55 a case shift locking-key lever 56, provided with a key 5 7 and a depending locking arm :58. This arm termi nates in a hook-like engaging or lookingmember 59 adapted to coact with a cooperative engaging or locking-member or device 60 carried by the frame of the machine. In the present instance the engaging member 60 is in the nature of a fairly stiff fiat spring secured at its upperend, at 61, to aguide comb or plate 62 fastened to-the machine frame and further secured to saidguide comb by a screw 61?. The stem of a headed screw 68 passes freely through an offset-open ng in the leaf spring 60 and is threaded into in-- cident tapped openings in-the guide comb 65? 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 spring 60 may be limited in its forward movement and may be held to properly coact with the engaging member 59, as shown in fulllines 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 caseshift lever 46by which: it is carried. The screw 63 of the 'presentinstance is modified and associated with other parts as will here inafter more clearly appear.

From an inspection of Fig. 6 it will be seen that the rear wall '5 of the carrying case is provided with contacts '65, each of which, when the cover is closed, bears agalni-it the rearwardly projecting end of the end plate 24: of the carriage and holds the carriage in its normal position and against case-shifting movement therefrom. There are prefer,- ably two ofthese contacts, one located-near each side wall 4 of the cover and they, are preferablyvmade of rubber or some such suitable material. There are also provided on the top wall of the cover twocontacts 66 that project downwardtherefrom,and when the cover is closed, bear against the top of "the platen.

It will be'undertsood that should the operator inadvertently leave the "case-shift mechanism looked, as indicated in full lines in Fig. 1, thiswould' result in the carriage being fixedlyheld in the upper case position further rearward than is shown in Fig. 6; It follows that anattemptto 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 46 has an objects, of the present invention to overcome this difiiculty, as will presently appear.-

The case-shift mechanism and the carry ing case as thus far described are virtually the same as those employed in the earlier 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 the machine can be enclosed in its carrying case, if'the operator should inadvertently leave the case-shift locked, thereby preventing injury to the machine, or its cover, or both. Such means will now be described.

'tofore made a center-lock for the carriage was employed. In accordance with my pres-1 ent invention I have modified this centerlock mechanism and have combined therewith meansby which the operation of the In the Remington portable machineshere:

center-lockto lock the carriage. is effective to automatically release the case-shift mechanism in the event that the operator should, by inadvertence, leave the case-shift locked in its shifted position. Inasmuch as the shifting of the finger wheel of the platen to collapsed condition, and the locking of the carriage in centered position are necessary pre-requisites to conditioning the machine for enclosure within its carrying case, it necessarily follows that the locked case-shift, controlled as it is by the center-lock, must be automatically released before any attempt will be made to enclose the machine within its carrying case.

In accordance with my present invention I have constructed the center-lock as follows:

A manually controlled locking-member or lever 67 is provided witha finger piece '68 that extends rearward beyond the ordinary carriage release key 69 atthe left hand end of the carriage. The finger piece 68 preferably bears the word Lock (see Fig. 12)

ios

on the front face thereof, which acts as an indicator'or designation for the operator and avoids confusion. The lever 67 is piv-- otedi'at 67 on the left hand end plate 24 of v the carriage and is'provided with a depending arm 70 that constitutes one of the two members capable of inter-locking with each other. This arm 70 is adapted to be projected down through an opening 71 in the ca-rri age 9 3, as shown in Fig. 2, when the key 68 is pressed forward. 1 The portion 72 of the lever 67 is offset from the body portion thereof and underlies an arm 73 connected to'afeed rack/74- and which carries a carriage release key 69, herelnbefore referred to. The feed rack is carried by a. pivoted support 75 pressed forward by spring 76 and normally engaging one of the usual feed dogs 77. A spring 78 is wound around a pin 79 on the left hand end plate 24 and is anchored to said plate at one end, whereas the opposite free end of the spring bears against the part 72 of the locking lever 67 and tends to restore it to and hold it in normal, ineffective position, shown in Fig. 1.

The locking lever 67 also is provided with an arm 80 that terminates in an obstructing end 81 which normally stands in the path of and contiguous to the left hand end of the platen spindle splined to the platen 22 and carrying at its rig hand end the finger wheel 83. The obstructing end 81 thus norn'ially prevents the shift of the finger wheel 86 from the dotted to the full line position in Fig. 2, and it is necessary to thus shift the finger wheel before the cover of the carrying case can be closed, even if the carriage be centered in its line of travel. \Vhen, however, the finger piece (58 is shifted forward from the Fig. 1 positi .1, his results in re moving the obstructing end of the lever 67 from the path of the platen spindle. The finger wheel 83 may then be shifted to the full line Fig. 2 position, projecting the left hand end portion of said spindle into the path of the return ovement of the lever arm 80; its obstruc .g end thus preventing the return movement of the lever 67 to normal, ineffective position. The manual actuation of the lever 67 just described, resulted in disengaging the feed rack 74. from the normally engaged feed dog T7 and in projecting the end of said lever down through the opening 71 in the carriage to effeetive position, and the parts will remain with the carriage located in this condition freed from control of its escaocment mechanism.

A second carriage center-lockmg member, designated as a Whole by the reference numeral 84 is shown in detail and detached in Fig. 4:. This member is in the nature of a sheet metal arm or lever that extends longitudinally of the carri support 25 and is apertured at to receive a siioulder pivot screw 86 by which the member is supported for pivotal. movement lore and aft of themachine on the underside of the carriage sup port 25. The left hand portion of the member 84 is bent atright angles to the body portion thereof to present a vertic lly disposed part 87 that is provided with a slot 88 and with an opening 89 in which latter one end of a contractile spring 90 is secured. The forward end of this spring is anchored on a pin 9f carried by a fixed bracket 92. The vertically disposed 8 extends up through an opening 33 in the left hand end of the carriage support 25, as shown in Figs. 2 and 8. Projecting forward from the upper edge of the rt 87, and overlapping the upper face of the carriage support 25, is a flange formed with oppositely inclined cam edges 94 having an intervening locking notch or recess 95 at the high part of each cam.

From an inspection of Figs. 2, 8 and 9 it will be understood that when the depending arm 70 is locked in its lowered, effective position as described above, the carriage will travel from right to left under the power of its spring drum (not shown) since at this time the carriage is freed from control of its escapement mechanism. In this travel of the carriage, member 70 will 002161; with the right hand cam 9 1, shifting or camming the member 84 rearward around its pivot 86 and against the force of the spring 90 until the part 70 reaches the notch 95 when the reaction of the spring will snap the member 84 forward causing the notched portion thereof to interlock with the member 70, thereby locking the carriage centered in its line of travel and preventing further movement thereof either to the left or to the right. If the member 70 is to the left of the cams 94 before the carriage is center-locked, the. action will be the same brought about by a shifting of the carriage to the right.

It is the movement of the carriage centerlocking member 84 brought about in the manher just described that I utilize to automatically effect the release of the case shift look if the latter happens, inadvertently, to be left in locked condition. Su'c'h release of the case-shift-lock is effected by the following means. 7 I I A rod or link 96 extends fore and aft of the machine and is supported intermediate its ends for fore and aftsliding movement on a fixed tie rod 97 which connects the side plates of the frame. The rear end portion of this link extends freely through a slot 88 in the locking member 84, the link being pro vided at its rear end with ahead 98 adapted to bear against the rear face of the part 87 of said locking member. The forward end portion of the link 96 is threaded and extends freely through an enlarged opening 99 in a case-shift releasin or trip device, designated as a whole by the reference numeral 100 and shown in detail and detached in Fig. 3. The threaded end of the link 96 which extends forward of the releasing device 100 carries a nut or abutment 96 adjustable along the link and held in itsa'djusted position by a lock nut. The nut 96 coa'cts with the forward face of the device 100 to actuate it.

This device 100 is preferably made of sheet metal with an enlarged opening 101 therein through whichthe stem of the screw 63 ex-' tends, though the headof the screw overlaps the front face of said releasing device and prevents its displacement from the screw. A rearwardly extending flange 102 on the releasing device eXtends back beyond the left hand edge of the cam plate 62, as shown in" Figs. 1 and 5, and c'oac'ts therewith to assure the requisite pivotal movement of the releasing device and preventing undue wob- 1 member 56 is adapted to ride in its move ment into locking engagement with the lower end of the spring 60.- A rearwardly extendmg lnclined linger 104 also is formed on the case-shift releasing device .100 to bear on the lowerend portion of the spring 60 to one side of the point where the engaging nose 59 of the case-shift lockinglever engages. the lower edge of the spring.

The releasing device 100 receives a bearing on a sleeve 105 (Flg. 10) whlch surrounds the screw 63 and bears against a washer 106 onthe screw, said washer be ng held against a second sleeve 107 that surrounds the screw and bears against the front face of th'ec'omb plate'62. The washer 106 is thus held firmly between the sleeves 105 and 107, and with the headof the screw '63provides means be tween which the releasing device 100 is confined for limited tilting movement. From an inspection of Fig. 11 it will be see'nthat the line 108 where the inclined face 103 oin's the body portion of the releasing device 100 is adapted to coactwith the arm 58 of case- The release of the locking arm manner descrlbed can, however, take place I shift locking-lever. At the same time the finger 104 coactswith the lower end of the spring 60. The effect, therefore, of rock;- ing the releasing device 100- by a rearward pull on the link 96. is to tend to wedge the arm 58 forwardand to wedge the lower end of thespring rearward, effecting a release of the hook-like locking nose 59 from the spring 60. Fig. 11 shows the parts as they appear just before the pull on the link 96 has completed its movement, and a disengagement between the locking arm 58 and the spring 60 has been effected. v

58 in the only under two conditions which will now be pointed out.

From an inspection of Fig. 8, which represents the parts when the carriage support 25 is in the norm'al'or lower case position. it willbe seen that there is alost motion between the abutment 98 and the carriage center-lock member 84, and that the eXtent of this lostmotion is such that a rearward displacement of the member 84 around its pivot 86 will be ineffective on the link 96, or in any event will be ineffective on the releasing device 100.. It follows, therefore, that if the case-shift-lock is released when the centerlock is actuated, the link 96 will not be actuated to operate its companion releasing device 100. However, when the carriage support25 is shifted to and locked in upper case position, as represented in 9, the effect of such shifting is to take up the lost motion'between the device 84 and the abutment 98, so that the swinging of the member 84 at this time aroundits pivot 86 is efiective to actuate The provision of the adjustable abutment v 96aon the link 96 is effective to increase or decrease the amount of lost motion referred to above. and thereby curate operation. y

It will be understood that as long as the center-lock is effective, any attempt to lock the carriage in case-shifted position will be defeated because the act of thus shifting the carriagewill shift the releasing device 100 to releasing position and'prevent an engage ment of the nose 59with the lower end of the spring 60. v i i p In the ordinary operation of the machine pressure exerted on the case-shift key 48 is effective to release" the locked case-shift lever '56 fromengagement with the spring 60, the

spring 56 at this time exerting its force to restore the case-shift locking-lever to normal time the parts for ac- I 1 line to the dotted line position, 'shownin Fig. 2, in'orderto condition the machine for use. The result of this movement of the finger wheel is to release the'lo'cked lever 67, permitting it to return; tonormal position under the action of its spring '78 thereby enabling the feed rack to re-engage the feed dog 77 and withdrawing locking member 70 from interlocking engagement with the companion center-locking member 84. The center lock being thus released and the feed rackengaging its feed dog'77, the machine'is in condition foruse. I 1

, From what has been pointed out it willbe understood that the member 84 constitutes an actuating member for the releasing member 100; that in the normal condition of the parts, or when the carriage is in the lower case position. the actuating member 84 is inthe lost motion connection (including the pull wire 96) between the members 84 and 100, .andthat the former will be rendered effective to actuatethe latter when, and only .when, the carriage receives a case shifting .movement to upper caseposition, such moveeffective on the releasing member 100'due to ment resulting in taking up said lost motionv line of travel, a case-shift-lock, and releasing means controlled by said center-lock for automatically releasing said case-sl1it't-l0ck.

2. The combination of a carriage, a centerlock for locking the carriage centered in its line of travel, a case-shift-lock, and releasing means controlled by said center-lock for automatically releasing said caseshift lock and for preventing a relocking thereoi as long as the center-lock remains effective.

3. The combination of a carriage, caseshifting means therefor including a case shift-lock for locking the carriage in case shifted posia-ion, a center-lock for locking the carriage centered in its line of travel, releasing means controlled by said center-lock for automatically releasing said case-shiftlock, and means by which a case-shifting of the carriage renders said releasing means effective to be conirolled by said center-lock.

4. The combination of a carriage,:a centerlock for locking the carriage centered in its line of travel, said center-lock comprising a pivoted arm, a case-shift-lock, and releasing means for automatically releasing said caseshift-lock when the center-lock is rendered effective, said releasing means including .a link operatively connected to said pivoted arm of the center-lock, and a case-shiftlock releasing-member actuated by said link.

5. The combination of a carriage, caseshiEEti-ng means therefor including a kcy-controlled case-shift locking-member and an engaging device with which it coacts to lock the carriage in case-shifted position, a center-lock for locking the carriage centered in its line of travel, said center-lock comprising an arm mounted to swing fore and aftof ,the machine and receiving such movement when the center-lock is being rendered effective, and means controlled by the movement of said arm for disengaging said case-shift locking-member from engagement with its cone-ting engaging device.

6. The combination of a carriage, case- ;shifting means therefor including a key-controlled .case-shift locking-member and an engaging device with which it coacts to lock thecarr-iage in case-shifted position, a centerlock for locking the carriage centered in its line of travel, said center-lock comprising an arm mounted to swing fore and aft of the machine and receiving such movement when \the center-lock being rendered effective, a link that extends fore and aft of the machine and which is actuated by said arm, and. a tripping device controlled by said link and which coacts with said case-shift lockingmember and engaging device to effect a disengagement between them.

7. The combination oi a carriage, case shitting means therefor including a key-controlled case-shi'lt locking-member and an engagingidenice with which izteoacts to locktlie carriage in case-shifted gposition, a centerlock for lockin the carriage centered in its line 01 travel, said centerlock comprising an arm mounted to swing fore and aft of the machine and receiving such movement when the center-lock is being rendered effective, a link that extends fore and aft at the machine and which is actuated by said arm, and a tripping device controlled by said link and which coacts with said case-shift lockingmember and engaging device to effect a disei ga ement between them and prevents a reen agement of the case-shift locking-member with said eng oping device s long as the cen ter-lock remains effective.

8. The combination of a case-shift frame, a carriage carried thereby, a key-controlled Caseshii't locking-member, an engaging device with which it coacts to lock thecase-shi'i t "frame in shil ted position, a -centerlock for locking the carriage centered in its line oi travel comprising an arm mounted on said case-shift frame to swing, a link actuated by the sw nging movement of said arm, and a pivoted releasing member that 'e'ii'ects a disen 'asrement between said case-shift locking member and device and which is case-shift frame to swing, a link actuated by the swinging movement of said arm, means controlled by said link for releasing said case-shift locking-member from said engaging device, and a lost motion connection between said link and arm which is taken :up when the case-shitt frame is shifted from normal nosition.

10. The combination oi a case'shift frame; a carriage carried thereby; key-controlled can-shift locking-member; an engaging device with which it coacts to lock the case-shift iramein shitted position; a centerdock for locking the car age centered in its line of travel comprising a spring pressed locking arm mounted on said case-shift frame to receive swinging movement thereon, a cooperative locking-member, interlocking means on said arm and cooperative locking-member including a cam with locking notch therein, and a key for bringing said cooperative locking-member and arm into cooperative relation so that they will coact during the travel oi the carriage to lock the latter in centered position and the arm will receive a swinging movement by the action of the cam; and means controlled by the swinging movement 01" said arm for effectin a release of the case-shift *locl zing-member from said eng ging device.

11. The combination of a carriage; a center-lock for locking the carriage centered in its line of travel comprising two lockingmembers adapted to interlock one with the other but normally out of cooperative relation, manually actuated means operable at will for bringing said members into cooperative relation, a cam for camming one of said members by the other during the travel of thecarriage to centered position and preliminary to the interlocking of said members; a case-shift-lock; and releasing means con trolled by the said camming movement of one of said locking members. for releasing the case-shift-lock.

12. The combination of a carriage; a center-lock for locking the carriage centered in its line of travel comprising two lockingmembers adapted to interlock one with the other but normally out of cooperative relation, manually actuated means operable at will r'or bringing said members into cooperative relation, a cam for camming one of sald members by the other durmg the'travel of the carriage to centered position and pre liminary to the interlocking of said members; a case-shift-lock: and releasing means controlled by the said cammmg movement of one of said lOCklIIg-IIlGIIlbGISfOI' releasing the case-shift-lock,- said releasing means comprising a pivoted releasing device coacting with the case-shift-lock for releasing the latter and preventing a reengagement thereof as long as said releasing device is in the actuated position.

13. The combination of a carriage; a cent-er-lock for locking the carriage centered in its line of travel comprising two lockingmembers adapted to interlock one with the other but normally out of cooperative relation, manually actuated means operable at will for bringing said members into cooperative relation, a cam for camming one of said members by the other durmg the travel of the carriage to centered position and pre liminary to the interlocking of said members; a case-shift-lock; and releasing means controlled by the said camming movement of one of said locking members for releasing the case-shift-lock, said releasing means comprising a link having a lost motion connection with the cammed locking-member, the lost motion being taken up by a case-shifting movement of the carriage from normal position.

14:. The combination of a carriage; a center-lock for locking the carriage centered in its line of travel comprising two lockingmembers adapted to interlock one with the other but normally out of cooperative relation, manually actuated means operable at will for bringing said members into cooperative relation, a' cam for camming one of said members by the other during the travel of the carriage to centered position and preliminary to the interlocking of said mem- .bers; a-case-shift-lock; and releasing means controlled by the said camming movement of one of said locking-members for releasing the case-sl1ift-lock, said releasing means comprising a linkhaving a lost motion con- 1 nection with the cammed locking member,

the'lost motion being taken upby a caseshifting movement of the carriage from normal position, and adj ustable'means for varyits line of travel comprisingtwo lockingmembers adapted to interlock one with the other but normally out. of cooperative relation, manually actuated means operable at will for bringing said members into cooperat1ve relation, a cam for cammmg one'of sald members by the other during the travel of the;

carriage to centered posit-ion and preliminary to the interlocking of said members; a

case-shift lock; and releasing means controlled by the said camming movement-of one of said locking-members for releasing the case-shift-lock, said releasing me'ans' comprising a link whichextends freely'through' an opening in the cammedlocking-member, and a contact on said actuation of the link. 1

link coacting with the. cammed locking-member to bring about any 16. The combination of a carrl ge; a caseshift frame on which the carriage'is :sup-

ported; key actuated locking means for looking the carriage in its case shifted position;

, L u l a center-lock for locking the carriage centered in its line of travel, said center-lock comprislng a key controlled locklng element on the carriage, and a spring pressed lever mounted on the case-shift-frame tomove fore and aft of the machine and carrying a cam.

with alocking notch therein at the high point of the cam, the key controlled element in its path of movement with the carriage being normally ineffective on said cam but a center-lock for locking the carriage centered in its line of travel, said center-lock comprising a key controlled locking element 011 the carriage, and a spring pressed lever mounted on the case-shift frame to move fore and aft of the machine and carrying a cam with a locking notch therein at the high point of the cam, the key controlled element in its path of movement with the carriage being normally ineffective on said cam but rendered eliective thereon during rendered. eife'ctive thereon during the travel of the car-- 'riage when such elementiis projected to effective position by its key; and means. conno i the travel of the carriage when such element is projected to efiective position o key; a link passing freely through an opening; in said spring pressed lever and having a contact thereon Which ceacts with the lever; a ileasin'g device for releasing said key actuated caseshift-locking means and a connection between said link and releasing device.

18. The combination of a carriage; a center-lock for locking the carriage centered in its line of travel comprising two locking- Inembers adapted to interlock one with the other but normally out of cooperative relation manually actuated means operable at will for brin 'ing said men'lliers into cooperartive relation, a cam for eamming one of said members by the other during the travel of the carriage to centered posit-ion and preliminary to :the interlocking of said members; a case shizttdock; releasing means controlled by the said camming movement of one of said locl;-

ing-members for releasing the case-shift-mmlz; a finger Wheel for the platen mounted for movement into and out of compact position; and means controlled by said finger wheel for locking one of said locking-members out of cooperative relation with its coacting locking-member.

19. The combination of a carriage, easeshift mechanism therefor including a caseshiftlock, and automatically operating releasing means for releasing said case-shittlock including an actuating member, a normally ineffective releasing member for the case-shift-lock, and means controlled by a case shifting movement of the carriage from normal position for rendering said actuating member effective on said releasing mem er.

20. The combination 0; a carri gt, case- 'shift mechanism therefor including a caseshift-lock and automatically operating releasing means for releasing said case-sluttlock including an actuating member, a nor mailly ineffective releasing member for said caseshift-lock a lost motion connection between said actuating and reieasing members, and means controlled by a case sh' fting move ment of the carriage from normal position for taking up said lost motion connection and thereby rendering the actuating member effective to operate the releasing member.

Signed at Stamford, in the county of Fair field and State of Connecticut, this 12th day of March, A. D. 1929.

JOSEPH PHELPS.

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