US997559A - Type-writing machine. - Google Patents

Description

' lfz'Zzzessess '0. G. KAVLE.

- TYPE WRITING MAGHINE. APPLICATION FILED NOV. 21, 1907.

997,559, I Patented July 11, 1911.

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OSCAR 'c. KAVLE, or S YRACfiSE', NEW YORK, AssIenoRfro HARVEY A. MOYER, or.

. symcusn, NEW YORK.

'rYrn-wnrr'ms MacnI-NE.

To all' u zhom 'it may concern: g

Be it known that I,- OSCAR C. KAvLE, a

. citizen of the "United States, residing at Syracuse, in the county of Onondaga and .State of New York, have invented anew and useful Improvement in Type-Writing .Machines, of which'the following is a specification.

This invention relates more particularly to center guides for the type-bars, and related parts, of typewriting machines of the sort in which the carriage issupported' by a shift frame for [shifting the platen into printing relation to either of different sets of type on the type-bars. Many features of the invention are,'however, alsoapplicable to machines inwhichthe type-bar segment is shifted instead of'ithe carriage, and to other typesof machines. 1 i I a The objects of the invention are to construct and arrange thetparts so as'tov increase the efiiciency" and accuracy of the machine; to provide a .center guide of simple, light and inexpensive construction;. and to mount it onthe mainframe and provide means on the shift frame for preventing the deflection of the center guide; to so con struct and arrange the center guide and type-bars that the type heads can be bent at an angle .to the type-bars at a point above the guide, thereby enabling the type-bars to be pivoted in a segment of greater radius without increasing their length, and lessen,-

' ing the twisting strains on the type-bar bearings; and to improve the construction of the center guideand. related parts of typewriting machines in the respects he'reinafter described and set forth'in the claims.

' and related parts ofa typewriting machine.

In the accompanying drawings: Figure 1 1s a front elevation of the center guide Fig. 4 is a sectional elevation thereof, on an enlarged scale, in line 44, Fig. 3. Figs. 5 and 6 are horizontal sectlons thereof, on an enlarged scale, in lines 5--5 and 6.6, re-

s ctively, Fig. 3. Fig. '7 is a front elevatlon, detached, of the line gage. Flg. 8 is a ,front elevation. of the support for the ribbon vibrator. g

Like letters of reference refer to like parts in the several figures.

Y V Specification of flette'rs Itatent.

frame, B the platen,

- chine.

plate of the main A represents the to (l the platen carriage,

Patented July 11, 1911. Application filed novembeiai, 1907-. 1 erial No. 403,121.

D the carriage shift frame, afidE one of the type-bars of -a front strike typewritingmariageis supported and travels horizontally,

is suitably pivoted at the upper rear por- ,tion of the main frame to swing up-and down aboutan axis. indicated at cl, and is shifted by means (not shown) for placing the platen in printing relation to one or another of the two. or more sets of type on the type-bars. Thetype-bars 'E are pivoted in any suitable manner below the shift frame to' swing upwardly and rearwardly to strike the front side-of'the platen. The position of the type-bar pivots is represented by the solidsegmental line'e, Fig. 1. The type-bars have heads 6. which, as usual, bear two or more. type and extend in line with the type-bars or at more or less of-an angle thereto, depending upon the position of the type-bars on the seg1nent,so that the heads will all stand upright when making the impressions. Each type-bar is provided with a guide lug or vextension e Figs. 1 and 2, which may be a part of either the bar or the type-head (the latter being ordinarily a separate piece secured to the bar), and depends vertically below the bend or angle between the type head and the bar when the head is nearing the printing point. Otherwise the parts. referred tomay be ofany usual or suitable cbnstructionand arrangement. 2 v

F represents annpright supportfor the vibrating ribbon guide or vibrator. The support F preferably has rearwardly-extending legs secured in a slotted extension or bracket f of-the shift frame by screws f and a slotted or open upper portion for the passage of the type-bars and for. exposing to view the usual letter space scale f on the carriage. 1 I

G represents a line orpaper ga'ge, I- I a vibrating ribbon guideor vibrator, and I a center guide for the type-bars", all of which are mounted on the upright support F, the first mentioned part being fixed to and spaced from thev rear side of the support so as to form aspace or guide-waybetween it and the support in which the other two parts are confined but permitted to slide vertically. The line gage is proyided with por- The shift frame 1), upon which the car- 45 frame.

tions extending horizontally to opposite sides of the upright support close to the platen and having straight upper edges forfacilitating the proper adjustment of the 5 paper on'the platen. The endsof the carriage at the height of the line gage do not project forwardly beyond the front side of the platen, see Fig. 2, which permits the ends of the carriage to pass in rear of the ends 1 0f the linegage without interference therewith when it is desired to print near the ends of the platen. A long line gage can therefore be used and located close to the platen. The gage ispreferably secured to the support F, as'shown in Fig. 5, by screws g passing through the support and provided with sleeved nuts g surrounded by spacing washers g which hold'the gage away from the back of the, support to provide the space for the vibrator and center guide. The upper end of the vibrator H, which, as usual,

' is forked provided with side guide loops for the ribbon, slides vertically in the space between the support F and line gage G, be. mg confined laterally by the screws g. The

lower end of the vibrator is connected to the operating means, which in the construc:

tion shown consists of a lever h pivoted. on the shift frame extension f and vibrated by means not shown. The center guide I is located in the slot or opening of the. supportv F and has side tongues which slide in vertical grooves 2', Figs. 3, 5 and 6, in the side portions of the support F. The center guide is flexibly connected -to the main frame, conveniently by legs 2" which are riveted on the rear side of the center guide and extend downwardly therefrom between the vibrator H and the rear side of the support]? and have feet 2' at their lower ends engaging in holes in the upper ends of a forked or U shaped standard 2' which is fixed by a screw or otherwlse to a central bracket or part i depending from the top plate of the main the platen. The support F, however, having the described tongue and groove connection with the center guide, braces and holds the same against deflection, either laterally or fore and aft of the machine, during the 0 operation of the type-bars, while the guide itself and the parts connecting it to the main frame can be made small and light. The flexible or loose connection of the center ide with the main frame, however, allows of the slight fore and aft deflection of the' The guide has a central vertical slot port F when the latter is shifted with the shift frame, it being understood that the support moves in an are.

It is usual to make the bend or angle between the type-bars and type heads below the center guide, but this causes the type heads, particularly on the bars near the ends of the segment, to be offset so. much as to cause serious side or twisting/strains on the type-bar pivots and more orless imperfect impressions to be madef by such type-bars. But in the construction herein claimed the type-bars are pivoted on a curved line e, Fig.

1, which is concentric with a point P above the center guide and preferably coincident with the normal printing pointon the platen, and the bend or angle between the type-bars and their heads is made zit this point P so that the bars extend in straight-lines therefrom to their pivots, while the guide projections 6 of the type-bars extend below the point P to enter the slot of the center guide, as clearly shown in Fig. 1. This construction insures more perfect work, prolongs the life of'the type-bar pivots, lessens the need for a banking ring, thereby avoiding the guide necessary for it to slide on the supexpense and noise of the same, and furthermore permits thetype-bar pivots to be arranged on a segment of longer radius,,which gives more room for the bearing hangers without increasing the totallength of the type-bars. This last advantage will be understood..from an examination of Fig. l, in which the broken curved line indicates the location of the type-bar pivots that would be required if the bars were bent at a point P below the center guide, as they usually are.

I claim as my invention:

1. In a typewriting machine, the combination of a series of segmentally arranged ty pe-bars provided at'the outer ends with type heads extending at an angle to the bars, and'with guide projections which extend inwardly beyond thevertexes of the angles formed by the heads withthe type-bars, and a center guide arranged to receive only said guide projections of the type-bars, substantially as set forth. 7

2. In a typewriting machine, the combination of a platen, a series of segmentally arranged type-bars each provided at its outer end with a head bearing a plurality of type,

the headsof different bars having different angular relations to the bars, and a guide projection extending inwardly from each head in the plane of the head beyond the juncture of the headwith the type-bar, and a center guide arranged to receive only'sai guide projections of the type-bars, substan tially as set forth.

3. Ina typewriting machine, the combination'of. a1 platen, a center guide, a series of type-bars pivoted in a segment below' said .tially as set forth.

guide to swing in radial planes which inter sect at a point above said center guide, heads secured'to the type-bars at different angles, anda rigid part projecting from the outer end of eachbar inwardly in the direction of the center of the segment beyond the juncture of the head with the bar and adapted alone to entersaid center guide, substan- 4. In a typewriting machine, the combination of a series of type-bars pivoted in an arc and having outer portions bent at an angle to the body portions of the type-bars, typeheads secured to't'he outer portions of the bars and extending outwardly from the bends in the bars, andguide projections extending inwardly from the bends in the bars in the planes of the heads, and a center guide arranged to receive said guide projections of the typebars at a point inwardly from said bends s in the type-bars, substantially as set forth. 7 Z I 5. In a typewriting machine, the combination of a series of type-bars, a platen and carriage for the same, a movable shift frame for the platen, a center guide for the typebars having a fixed relation thereto, and a part on sald shift frame which constitutes a lateral support forsaid center guide, substantially as set forth.

6. In a typewriting machine, the combination of a series of type-bars each having .a plurality of rinting characters, a platen and carriage or the same, a shift frame for the carriage, a center guidefor the type-bars having a fixed relat on therewith, and a lateral support for thedcenter guide supported by the shift frame and moving there-' nation of a series of type-bars each having a with, substantially as set forth.

7. In atypewriting machine, the combinationof a mainframe, a series of type-bars, a

platen and carriage for the same, a movable shift frame for the platen, acenter guide for the type-bars mounted on the main frame and having a fixed relation to the type-bars, and a part movable-with said shift frame and by which said center guide is supported laterally, substantially as set forth.

8. In a typewriting machine, the combination of -a series of type-bars each having a plurality of type, a platen and carriage for the same, a shift frame for the carriage, a main frame supporting the shift frame, a ribbon vibrator, a guide on the shift frame for the vibrator, a center guide for the type bars laterally supported by the vibrator guide, and connections between the center tion of a main frame, a series of type bars each having a plurality of type, a center guide havinga flexible connection with the main frame, a platen and carriage for the same, a shift frame for the carriage, and alateral support for the center guide arranged on the shift frame and having a sliding connection with the center guide, substantially as set forth,

10. In a typewriting machine, thecombination of a main frame, a series of type-bar: each having a plurality of type, a platen and carriage for the same, a shift frame for the carriage pivoted onithe main frame. a

ribbon vibrator, a] guide for the vibrator supported by the shift frame, and a center guide for the type-bars havinga sliding connection with the vibrator guide and a flexible connection with the 'main frame for holding the center guide from shifting with the shift frame, substantially as set forth. 11. In a typewriting machine, the combination of a'series of type-bars each having a plurality of type, a platen, a movable shift frame for the platen, a. ribbon vibrator, a guide for the vibrator supported by the shift frame, a fixed center guide for the typebars supported laterally by said vibrator guide, and a line gage supported by said vvibrator guide, substantially as set forth.

12. In a' typewriting machine, the combivember, 1907.

OSCAR C. KAVLEL Witnesses:

O'r'ro A. SGHILLY, a CI'IESTER W. Ram.

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