US1339806A - burridge - Google Patents

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US1339806A
US1339806A US1339806DA US1339806A US 1339806 A US1339806 A US 1339806A US 1339806D A US1339806D A US 1339806DA US 1339806 A US1339806 A US 1339806A
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frame
ribbon
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms, e.g. ink-jet printers, thermal printers characterised by the purpose for which they are constructed
    • B41J3/36Typewriters or selective printing or marking mechanisms, e.g. ink-jet printers, thermal printers characterised by the purpose for which they are constructed for portability, i.e. hand-held printers or laptop printers

Description

L. S. BURRIDGE, DECDL r. o. BURRIDGE. EXECUTOR.
'TYPEWRIIING MACHINE.
APPLICATION FILED JUNE 6, I918.
Patented 1am 11, 1920.
4 SHEETSSHEET l.
L. S. BURRIDGE, DECD.
F. o. BUR-RIDGE. EXECUTOR.
TYPEWRJ'EWG MACHINE.
APPLICATION FILED JUNE 6.1918.
L M NH ,T&
Lw M ,m. 1L +1 Wm w A mm 5 m WW m. M W
L. S. BURRIDGE, DECD.
F. 0. BURRIDGE, EXECUTOR.
TYPEWRITING MACIHN'E.
APPLICATION FILED 1UNE6, 1918- Patented May 11, 1920.
4 sums-sum s.
' W/lznessea' Aff Pney onieicn LEE S. BURRIDGE, DECEASED, LATE OF NEW YQIzt-li, N. Y., BY FBJLNGIS O. BURRIDGE EXEO'UTOR, OF NEW YORK, N. Y., ASEEGNDR, BY MESNE ASSIGNMENTS, TO UNDER.
WOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELA- WARE.
'IYPEVTRITING-I'IIAGHINE.
Specification of Letters Patent.
latented May ill, 1920.
Application filed June 6, 1918. Serial No. 238,456.
l'his iii chines, and is herein disclosed as applied to a small typewriting machine adapted to be easily assembled so that it may be constructed cheaply, and also adapted to be built compactly and of light parts, so that it may lo convenient to carry around.
In hitherto attempting to construct machines of this type, effort has been usually directed to designing a machine comprising parts which were adapted to be ioldedtogether. According to the present invention, to make the machine compact, it has been found possible to avoid folding by incorporating parts of novel shapes, weight and infection, such as short type-bars having a throw considerably in excess of ninety degrees, so that the type-bars as they lie spread out on the rest-pad, usual in frontstrilre r chines, radiate from each other to a very at extent, thus permitting the use of a com aratively small and light segment as well .12; of a short, light type-bar easily operated. To obtain these and other ad vantages. the segment may be inclined at a considerable angle to the vertical, even as much as thirty degrees, and to further ".1 the throw of the type-bars, the se in; may be so placed relatively to the platen that the types strike the platen after having passed their vertical point. In order to effect this, and have the types strike srpiarcn' on the platen, the types swing about seven degrees past the vertical, and in striking the platen strike through a ribbon which is approximately parallel to the of the platen, so that the ribbon is strii k srnarely by the types, and yet is ready twisted from the vertical plane,
thus avoiding any serious tendency of the ribbon to twist.
To obtain the best utilization of this structure. it appears to be advantageous to have the typewriter include a double shift ich shift-frame also includes th.
way twisted by the platen-shift. In order to have the relationship of the ribbon, the platen and the types in printing practically constant, whatever case is being printed in, the shift-frame may be so constructed as to carry the platen up in a plane parallel to the ribbon and the face of the printing type. In obtaining these results, it has been found possible to utilize a light shift-frame built out or sheet-metal, which includes not only the carriage, but also the tracks on which the carriage travels as well as the ribbon-spools and certain other devices.
To enable such mechanism to be easily assembled, and to avoid the concentration of the mechanism into too narrow a compass, both on the shift-frame and on the body of the machine, there are provided several points at which the mechanism on the shift frame is adapted to be attached to the mechanism on the body of the machine. These connections, however, as well as the connections of the shiftirame itself to the body of the machine, may be either snap connections or screw connections, or may include stops which might have to be made adjustable in any event, and, therefore, do not add to the complexity of the mechanism or the labor of assembling.
The shifirame itself may be constructed out of separately-stamped metal parts, so designed and related to each other that each part involves no serious problems in bending, and that each part is adapted to be either screwed or riveted to the other parts by openings which are adapted to be formed in the process of stamping. and, at most, may only need to be provided with threads after having been stamped out.
Other features and advantages will here inaiter appear.
In the accompanying drawings,
Figure l is a sectional side view of a typewriting machine embodying the present improvcn'ients.
2 is a view similar to 1, but, for the most part, an end view.
Fig. 3 is a fragmentary plan view, bringing out especially the parts shown in Fig. 2.
Fig. at is a front view, diagrammatically showing the shift-frame disconnected from the rest of the mechanism, and its relatioiiship thereto.
Fig. 5 is a perspective view of the shift frame, partly broken away.
Fig. 6 is a side View of the ribbon-vibrat ing mechanism.
Character keys 10, at Fig. 1, depress keylevers 11, so as to rock bell-cranks 12 by means of cams 13 engaging pins 14 on the key-levers,so that the upper ends 15 of the bell-cran {S will draw forward links 16, to which they are pivoted, thus throwing typebars 17, to which the links are pivoted, upwardly and rearwardly, with the result that types 18 print on the platen 19. The exact structure of the type-action is disclosed more in detail in co-pending application, Serial No. 874,276, filed November 27, 191-4, now Patent No. 1,268,790, granted June 4, 1918, of which the present application may be regarded as a continuation in part. The type-bars 17 are pivoted in a segment 20, comprising a hanger 21, said segment being inclined at an angle of about thirty degrees from the horizontal, so that when any type rises, it swings through an angle of about one hundred and twenty degrees and strikes against the platen 19 a little above the center thereof. To enable the types 18 to print, there is provided a ribbon 22 n1ounted on spools 23, at opposite sides of the machine, and carried through a ribbon-guide 24, which comprises a flat member 25 cent the platen and a flat member 26 in. front thereof, by which the ribbon is kept flat in front of the platen, said guide being fast at 27 on the shift-frame.
The ribbon 22 is normally below the printing point, so that the writing is normally visible. Vhenever a key 10 is depressed, its key-lever 11 strikes a universal bar 27, which is adapted to swing forwardly a rockarm 28, which operates the ribbon mechanism. To operate his rock-arm, the uni versal bar 27, which is formed as a bail extending transversely of the machine and underlying all the keys, is pivoted in a pair of brackets 29, at the rear of the machine, and carries a pivot 30 of a link 31, which, at its lower end, is pivotally attached to a rockarm 32, fast on a shaft to which the rockarm 28 is likewise fast. The shaft is journaled in brackets 34 secured by screws to a bottom plate 36 extending across the frame. To enable the rock-arm 28 to operate the ribbon mechanism, there is pivoted to it a forwardly-extending link 37, which, at its front end, is in turn, pivoted to a nearly vertical rocki' lever 38, which serves to drive the left-hand ribbon-spool H3. The lever 38 is pivoted at 39 on a turned-up end 40 of a bracket 41, projectin; inwardly from the flat outer face of the shift-frame. The link 37 is of such a length that the rising of the shift-frame. does not materially change its relationship to the rock-arin 28 and the lever 38, partly because of the fact that in rising the shiftframe moves rearwardly slightly.
The lever 38 is pivoted not only to the link 37, but also to a horizontal floating link 43, which is adapted to vibrate the ribbon, said link being also pivoted to a link 44, carried by a pivot 45 on a bracket 46, extending forwardly and formed as the turned-over end of part of the metal of the rail 47 on which'the carriage travels. exact structure by which the link 37 is able to vibrate the ribbon is shown in application, Serial No. 151,173, filed February 27, 1917, now Patent No. 1,284,055, granted November 5, 191.8, of which the present ap plication may be regarded as a continuation in part.
The connections include a turned-aroumil lower end 48 of the lever 38, which comprises a pivot-opening adapted to be en gaged by a pivot 49 on the link 43, and to be clipped in place by a spring-clip 50 for simplicity in assembling. The link 37 is lirewise provided with a spring-clip 51, so that the link may be readily attached to the lever 38 in assembling. The connections for vibrating the ribbon, extending from the link 43, include an extension 52 of the pivot common to the two links 43 and 44, said extension riding in a slot 53, formed in a vibratory plate 54, which is connected by a light link 55 to the ribbon-vibrator proper 56, through which the ribbon is threaded. The vibrator 55 is formed as a long, narrow V-shaped member, having its two legs pivoted in a shaft 57, on the shiftframe behind the lefthand ribbon-spool, and extending therefrom almost to the ribbon-guide 24, at which point it is provided with a slot 58, through which the ribbon passes.
T he connections to the righthand ribbonspool may include an identical lever 38 and an identical link 37 provided with an identical snap-pivot connection 51. The righthand ribbon-lever 38, however, is not used for driving the ribbon-vibrator, and, there fore, lacks any extension like 48.
The shift-frame includes not only the cups for the ribbon-spool and the ribbonvibrating mechanism, but also includes the track 59 for the rear carriage rail and the track 60 for the front carriage rail, together with an upper stringer 61 and a lower stringer 62, at each end of the machine, by which stringers the ribbon-spool-supports are connected to the rest of the shift-frame. To enable the shift-frame to be shifted, there are provided a single or capital-shiftkey 63, and a double or figure-shift-key 64, said keys being pivoted on a short shaft 65, fast in a bracket 66, which is mounted on a bottom cross-bar 67 of the main frame of the machine. When the figure-shift-key is depressed, the rear end 68 of its lever strikes The I underneath a bracket 69, fast to the bottom left-hand stringer 62 of the shift frame, and lifts said shift-frame, causing it to rise upwardly and rearwardly. To guide the shiftframe as it goes upward, there are provided a pair of rock-arms 70, one at each side of the machine, said rock-arms fast on a transverse hollow shaft 71 journaled in the rear of the main frame, and pivoted by shouldered screws 72 to the bottom stringer 62 near the bracket 69. There are also provided a pair of guide-links "(3, pivoted on standards '7 rising from the rear of the machine, said links extending forwardly and upwardly to a point somewhat below the ribbon-cups at the front of the shiftframe, at which point they are provided with shouldered screw-pivots 75.
To enable the carriage to feed past the links 78, the links are provided with U- shaped portions 7 6 near the carriage tracks. They are also provided with outwardlyfiaring downward extensions 77, extending near to the bottom of the machine to provide anchorages for springs 78, extending to the frame, and adapted to take part of the load of the shift-frame, thus relieving the load on the shift-key when it is depressed.
In order to limit the throw of the shiftframe, the shift-frame is provided'with lugs 79, which may be integral or in the form of brackets fast on the stringers 62, said brackets being provided with openings 80, adapted to surround post 81, each held by a screw 81 and dowel pins to the, side of the main fame of the machine, said posts being provided with a pair of lock-nuts 82, on which the brackets normally rest, and also provided with a pair of lock-nuts 83, spaced from the first nuts, adapted to form a limiting-stop for the shift-framewhen the figure-shiftkey 64 is depressed.
If the single or capital-shiftkey 68 is depressed, its rear end 8% strikes beneath the bracket 69, and raises the shift-frame as does the figure-shift-key 64, but, to prevent the shift-frame from being raised to the same height, there is provided a pair of normally ineffective steps 85, adapted to be swung above the brackets 7 9 whenever the eapital-shiitkey 63 is depressed. To accomplish this, the stops 85, which are in the form of set-screws provided with loclr-- nuts 86, are mounted in the turned-over ends of a plate 87, in the shape of a bail proided "with a long, horizontal portion 88, beneath the frame, and upturned arms 89 adapted to swing on pivots 90 in the ends of the side frame of the machine, To carry the steps 85 to effective position, the plate 8'7 is provided with a bracket 91, extending upwardly and overlying a turned-over end 92 of the rearward extension 84 of the capital'shift-key-lever, with the result that screwing the screw-pivots 72 and 75 and removing the nuts 83 (or the screws 81), thus enabling it to be lifted from the machine. In order that there may be no other points of connection or disconnection except such as may be essential in a machine built to stand hard use and to work accurately, most of the other connections are composed of parts adapted to slide intoand.
out of each other in the process of lifting out the shift-frame after the removal of the screw-pivots 72 and 75 and thenuts 88.
, These other connections include the connection from the un'versal bar to the escapement mechanism. To enable this sliding, the escapeinent mechanism is mounted on the shift-frame and includes a lever ordogrocker 98 adapted to rock horizontally to operate the escapement dogs. of the escapement mechanism are disclosed more fullyin co-pending application, Serial No. 201,280, filed November 10, 1917, of which this application may be regarded as a continuation in part.
Since the shift-frame moves slightly rearwardly as it moves upwardly in shifting, the connections, including the posts 81, slant rearwardly, parallel to the movement of the platen, and the parts are adapted to permit the shift-frame to be lifted out in the same direction. To permit this, the
lever 93 has an extension 94 in the shape of an inverted U, slanting slightly rearwardly, in an open slot 95 of which a rod 96' is adapted to vibrate, and to move with it the lever, because the rod is provided with set-screws 97 at the rear end thereof, while the front end. is threaded into an abutment 98, forming part of a rocking mechanism. This rocking mechanism is on the main frame and includes a lever 99, pivoted in a bracket 100, fast on the frame of the machine, and having pivoted thereto, at its upper end, a floating-link 101, of which the abutment 98 forms the rear end, while the front end rests on a pivot 102; The pivot 102 is adapted to vibrate the floating link 101, and thereby operate the escapement' lever 93'. To accomplish this, the pivot 102 rides in slot 103, against the end of which it is held by a spring 104, and is mounted on the upper end of a rock-arm 10%, fast to the shaft 33, which, it will be remembered, is rocked at every depression of the universal bar. The rock-arm 105i is,
therefore, rocked at every depression of a type-key and operates the escapement lever The details 93. The lever 99 is also connected by a suitable link 105 to the space-key 106.
Another connection, adapted to be separated. by the mere lifting of the shift-frame, is the ribl'ion-reverse mechanism, which includes a rod 107, projecting downwardly from each ribbon-cup 108, and adapted to rest in open forks 109, said forks being connected together by a rod 110, which is adapted to be operated by a reverse-key 111, as set forth in Patent, No. 1,249,022, dated December 4!, 1917.
T he mechanism also provided with a lnmk-spacekey which is adapted to operate the back-space-mechanisin through connections which are readily separable for purposes of assembling and disassembling. To ermble this, the back-space-n'iechanism is provided with a long push-link 112, mounted on the shift-frame and extending to near one end thereof, where it is provided with an easily detachable connection running to the backspace-key This connection may include a bell-crank 11 i, pivotally mounted on a bracket 115 held by two screws 115 to the frame of the machine, and having an arm 116 overlying a rearward extension 117 of the backspace-keylever. The depression of the back-spacekey rocks the bell-crank and is adapted to push the link 1 12 by means of a pivot 118, which may be in the form of a snap hoolcconnection which can be easily connected and disconnected. The exact structure of the back-space1necl1an.ism is not described herein, inasmuch as it is fully disclosed in the co-pending application, No. 205,109, filed December 3, 1917, of which the present application may be regarded as a continuation in part.
From the above description, it will be seen that there is provided a shiftframe adapted to be assembled to form a unit of the machine, which can be easily attached to the rest of the mechanism. Moreover, the shift-frame is so designed that the parts thereof can be assembled without material interference with each other, and that when so assembled, they fit closely, yet easily, into corresponding parts on the main body of the machine frame.
It will be noted that although the ribbon-spools are on the shift-frame, and the ribbon mechanism which drives them is also to a large extent, on the shift-frame, the connection from one spool to the other for reversing runs along, and is mounted on the main body of the frame, where it is not likely to be damaged, and, owing to its sheltered position, can be light.
It will be noted also that the ribboispools have each their own driving lever 38, and that these levers are adapted to be disconnected from the links 37, which vibrate them by merely springing the clip or snapconnections 51 open. The same is true of the baclr-space-keysnap-connection 118. In order to hold the universal bar 27 up against the key-levers, it is provided at each side with a spring 119 anchored in an extension 120, springing from the bar 121, which supports the segment 20.
Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.
Having thus described my invention, I claim:
1. In a typcwriting machine, in combination, a main frame, a shift frame, means for so mounting said shift frame in said main frame as to permit case-shift movements of one with respect to the other, a traveling carriage and its letter-spacing mechanism mounted in said shift frame, ribbon-feeding mechanism mounted in said shift frame, ribbon-vibrating mechanism mounted in said shift frame, means mounted in said main frame for operating all of said mechanisms, operating connections from said operating means to each of said mechanisms, said connections being effective irrespective of the case-shift position of said shift frame, and readily attachable and detachable connections between said shift frame and its mounting means to facilitate the assembling and disassembling of the machine; the operating connections between said operating means and said letter-spacing mechanism, ribbon-feeding mechanism and ribbonvibrating mechanism being also readily attachable and detachable, and so related, when detached, that the shift frame and all parts carried thereby may be readily sembled with and disassembled from the main frame and the parts mounted therein.
2. In a typewriting machine, in combination, a main frame, a shift frame, means for so mounting said shift frame in said main frame as to permit case-shift movements of one with respect to the other, ribbon-feeding mechanism mounted in said shift frame, ribbon-reversing mechanism mounted in said shift frame, means mounted in said main frame for operating said ribbon-feeding mechanism, means mounted in said main frame for operating said ribbon-reversing mechanism, operating connections from each of said operating means to its respective mechanism, said connections being effective irrespective of the case-shift position of said shift frame, and readily attachable and detachable connections between said shift frame and its mounting means to facilitate the assembling and disassembling of the machine; the operating connections between each of said operating means and its respective mechanism being also readily attachable and detachable, and so related. when detached, that the shift frame and ribbon-feeding and reversing mechanisms mounted in said shift frame, means mounted in said main frame for operating said letterspacing nriichanism, an operating connection between said operating means and said letter-spacing mechanism, said connection being effective irrespective of the case-shift position of the shift frame, and readily attachable and detachable connections between said shift frame and its mounting means to facilitate the assembling and disassembling of the machine; the operating connection between said letter-spacing mechanism and its operating means being also readily attachablc and detachable, and so related, when detached, that the shift frame with its carriage and letter-syncing mechanism may be readily assembled with and dis assembled from the main frame and the operating means mounted therein.
a In a typewriting machine, in combination, a main frame, a shift frame, means for so mounting said shift frame in said main frame as to permit case-shift movements of one with respect to the other, a traveling carriage and its letter-spacing mechanism mounted in said shift frame, a back-spacing mechanism for said letter-spacing mecha nism, means mounted in said main frame for operating said letter-spacing mechanism, means mounted in said main frame for operating said back-spacing mechanism, operating connections from each of said op erating meansto its respective mechanism, said connections being effective irrespective of the case-shift position of said shift frame, and readily attachable and detachable connections between said shift frame and its mounting means to facilitate the assembling and disassembling of the machine; the op erating connections between each of said operatii'i r means and its respective mechanism being also readily attachable and detachable, and so related, when detached, that i the shift frame and mechanisms mounted therein may be readily assembled with and disassembled from the main frame and the operating means mountedtherein.
5. In a typewriting machine, the combination with a main frame and a universal bar thereon, of a shift-frame including a traveling carriage and tracks on which the carriage runs, two ribbon-supports also forming part of the shift-frame, ribbondrive mechanism adapted to be operated by said universal bar, a ribbon-reverse mechanism including a post movable on each ribbon-support to control individually the drive mechanism for each ribbon-support, a link shiftable on the main frame adapted to engage said supports to reverse the ribbon, and a fork for each post connected to said link, from which the posts are adapted to be separated by lifting the shift-frame.
6. In a typewriting machine, the combination with a main frame and a universal bar thereon, of a shift-frame including a traveling carriage and tracks on which the carriage runs, two ribbon-supports also forming part of the shift-frame, ribbondrive mechanism adapted to be operated by said universal bar, a ribbon-reverse mechanism including a post movable on each ribbon-support, to control individually the drive mechanism for each ribbon-support, a link shift-able on the main frame, a fork for each post connected to said link, from which the posts are adapted to beseparated by lifting the shift-frame, links pivoted on the main frame for guiding the shift-frame, and removable screw-pivots by which said links are pivoted to the shift-frame.
7. In a typewriting machine, the combination with a main frame and a universal bar thereon, of a shift-frame including a traveling carriage and tracks on which the carriage runs, anescapement mechanism on said shift-frame, a lever forming part of said escapement mechanism comprising a U shaped opening, a rod comprising abutments and vibrated by said universal bar, said rod adapted to rest in said U-shaped opening to vibrate the lever and to be separated therefrom by lifting the shift-frame, two ribhon-supports also forming part of'the shiftframe, ribbon-drive mechanism adapted to be operated by said universal bar, a ribbonreverse mechanism including a post movable on each ribbon-support, to control individually the drive mechanism for each ribbonsupport, a link shiftable on the main frame, and a fork for each post connected to said link, from which the posts are adapted to be separated by lifting the shift-frame.
8. In a typewriting machine, the combination with a main frame and a universal bar thereon, of a shift-frame including a traveling carriage and tracks on which the carriage runs, an escapement mechanism on said shift-frame, a lever forming part of said escapement mechanism comprising a U- shaped opening, a rod comprising abut ments and vibrated by said universal bar, said rod adapted to rest in said U-shaped opening to vibrate the lever and to be sepa rated therefrom by lifting the shift-frame, two ribbon-supports also forming part of the shift-frame, ribbon-drive mechanism adapted to be operated by said universal bar, a ribbon-reverse mechanism including a post movable on each ribbonsupport, to control individually the drive mechanism 6 naaasoe for each ribbon-support, a link shiftable on the main frame, a fork for each post con nected to said link, from which the posts are adapted to be separated by lifting the shift-frame, a backspace-link connected to said escapement mechanism and extending along the shift-frame, a back-space-keylever at the front of the machine, and an easily detachable connection between said backspacekey-lever and said back-spacelink.
9. In a typewriting machine, the combi nation with a main frame and a universal bar thereon, of a shift-frame including a traveling carriage and tracks on which the carriage runs, an escapement mechanism on said shift-frame, a lever forming part of said escapement mechanism comprising a U-shaped opening, a rod comprising abutments and vibrated by said universal bar, said rod adapted to rest in said U-shaped opening to vibrate the lever and to be separated therefrom by lifting the shift-frame, two ribbon-supports also forming part of the shift-frame, ribbon-drive mechanism adapted to be operated by said universal bar, a ribbon-reverse mechanism including a post movable on each ribbon-support, to control individually the drive mechanism for each ribbon-support, a link shiftable on the main frame, a fork for each post connected to said link, from which the posts are adapted to be separated by lifting the shiftframe, links between said main frame and said shift-frame, and easily removable p1vots by which the links are pivoted to the shift-frame.
10. In a typewriting machine, the con1bination with a main frame and a universal. bar thereon, of a shift-frame including a traveling carriage and tracks on which the carriage runs, an escapement mechanism on said shift-frame, a lever forming part of said escapement mechanism comprising a U-shaped opening, a rod comprising abutments and vibrated by said universal bar, said rod adapted to rest in said U-shaped opening to vibrate the lever and. to be separated therefrom by lifting the shift-frame, two ribbon-supports also forming part of the shift-frame, ribbon-drive mechanism adapted to be operated by said universal bar, a ribbon-reverse mechanism including a post movable on each ribbon-support, to control individually the drive mechanism for each ribbonsupport, a link sbiftable on the main frame, a fork for each post connected. to said link, from which the posts are adapted to be separated by lifting the shiftframe, a backspace-link connected to said escapement mechanism. and extending along the shift-frame, a back-space-key at the front of the machine including a lever extending to the rear, an easily detachable connection between said back-space-key-lever and said backspace-link, links between said main frame and said shift-frame, and easily removable pivots by wiich the links are pivoted to the shift-frame.
11.. In a typwriting machine, in combination, a main frame, a shift frame, means for so mounting said shift frame in said main frame as to permit case-shift movements of one with respect to the other, ribbon-feeding mechanism mounted in said shift frame, means mounted in said main frame for operating said ribbon-feeding mechanism, an operating connection between said operat ing means and said ribbon-feeding mechanism, said connection being effective irrespective of the case-shift position of said shift frame, and readily attachable and detachable connections between shift frame and its mounting means to facilitate the assembling and disassembling of the ma chine; the operating connection between said ribbon-feeding mechanism and its op erating means being also readily attachable and detachable, and so related, when detached, that the shift frame and ribbonfeeding mechanism mounted therein may be readily assembled with and disassembled from the main frame and the operating means therein.
12. In a typewriting machine, in combination, a main frame, a shift frame, means for so mounting said shift frame in said main frame as to permit case-shift movements of one with respect to the other, ribbon-feeding mechanism mounted in said shift frame, ribhon-vibrating mechanism mounted in said shift if. 'ame, means mounted in said main frame for operating both of said mechanisms, operating connections from said op crating means to each of said mechanisms,
said connections being effective irrespective of the case-shift position of the shift frame, and readily attachable and detachable connections between said shift frame and its mounting means to facilitate the assembling and disassembling of the machine; the operating connections between said ribbonfeeding and ribbon-vibrating mechanisms and their operating means being also readily attachable and detachable, and so related, when detached, that the shift frame and mechanisms mounted therein may be readily as uibled with and disassembled. from the main frame and its operating means.
FRANCIS O. BURRIDGE,
Emecutor of the last will and testament 0/ Lee i'ii/iv'idg/e, f[(I("c(1/--'r3 Witnesses Enrrn PENROSE, C. W. HOWELL.
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