US1524885A - Typewriter - Google Patents

Description

Feb. 3, 1925.

G. ROSE TYPEWRITER Filed Dec. 9, 1921 2 Sheets-Sheet l 'IN V EN TOR. fia ya 1%56 i Milk A TTORNEY Feb. 3. 1925- 1,524,885 G. F. ROSE TYPEWRITER Filed Dec. 9, 1921 2 Shoots-#811001: 2

INVENTOR. oZyeMse Patented Feb. 3, 1925.

UNITED STATES 1,524,885 PATENT oFF cE.

GEORGE F. ROSIE; OF HYNDSVILLE, NEW YORK.

TYPEWRITER.

Application filed December 9, 1921. Serial No. 521,227.

To all whom it may concern. Be it known that I, GEORGE F. Ross, c1t1- zen of the United States, and resident of l-Iyndsville, in the county of Schoharle and State of New.York, have invented certa n new and useful Improvements in Typewriters; and I do hereby declare the-following to bear full, clear, and. exact desrription ot the same, reference being had to-the accompanying drawings forming a part of this specification and to the reference numerals marked thereon.

This invention relates to typewriting nia- .chinesand more especially to features applicable, for example, to machines of the striking type bar variety, one ob ect of the invention being to provide a compact and practical form of construction and arrange: ment of parts for producing a machine of this character of reduced size and velght particularly adapted, for instance, for use. as a portable type of machine. Another object is the provision of such a machine hav ing an advantageous supporting means or bridge for the key levers. To these and other ends the invention resides 1n certain improvements and combinations of parts all as will hereinafter be more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Figure 1 is a side elevation of a typewritiug machine embodying the present invention' Figure 2 is a top plan view of a portion of the forward end of the machine showing the key levers and the supporting means therefor;

liigure 3 is an enlarged top plan view of the key lever supporting means or bridge with the cover plate'removed;

Figure 4 is a sectional elevation on the I line 4-4, of Figure 2;

Figure 5 is a sectional elevation on the line Ti -5 of Figure 2;

Figure 6 is a section on the line 66 of Figure 4;

Figure? is asection on the line 7"' 7 of igure 8 is a section on the line 8.8" of Figure 4.

Similar reference numerals throughout the several views indicate the same parts.

The embodiment of the invention selected for the'purposes of the present disclosure .to illustrate the'principles involved and a preferred practical application of the same is shown in conjunction with a striking bar typewriting machine having a main frame indicated generally at 10, which may be of the usual .or any suitable variety, adjacent the rear of which is supported .a traveling work carriage 11 including a roller platen 1:2. At 13 is a suitable ribbon supporting and feeding mechanism. The carriage is moved longitudinally by a suitable motive means (not shown) and its movementtcontrolled or spaced by mechanism including a contact bar 14 positioned for engagement by the type bars, this construction representing a type of machine well known in the art.

The present invention is applied in this instance to a machine of the type described above, comprising a construction and arrangement of type bars and key levers and their supporting means of a compact nature providing for reduction in the size and weight of the machine and including a sim-,

ple form of construction for the key leven' bridge affording an efficient supporting means comprising but few parts inexpensive to manufacture.

Referring more particularly to the drawings, the type bars 15 are supported, preferably, on a transverse wall or plate 16 located forwardly of the platen and inclined upwardly and rearwardly at a substantial angle with the perpendicular. W'all 16- is supported at its ends on the sides of the frame and has fixed on its forward side a sector shaped member 17 pivotally supporting the rear ends of the type bars, this sector member having anysuitable form of construction such for exam 1e as that disclosed in my co-pending app ication Serial No. 523,317 filed December 19, 1921 for typewriter construction. The type bars are actuated by connections, such for example,

' as links 18, with the rear ends of key levers 19 constructed and supported as hereafter described, and arranged in groups or banks as shown. The type bars are sustained in inactive position by an abutment or support of the usual construction (not shown) which is in the present case so positioned as to support the bars at an inclination upwardly and I This striking osition of the bars permits of the support 0 the platen at a lower elevation than would be possible if the bars were arranged for a vertical striking position. In other words while the type bars swing through a vertical position in striking, they move from an inclined position of rest to a correspondingly inclined striking position, thereby reducing'the necessary -height of the machine.

In addition to the reduction of the overall vertical dimensions of the machine, the above described arrangement, including the inclined inactive position of the type bars, provides space beneath the forward ends of the latter when in inactive position for the reception of the rear ends of the key levers and the supporting means for the same.

This advantage is, enhanced by the provision of improved key lever supporting means which maybe located well-under the inactive type-bar position, thereby reducing the front-to-rear dimensions ofithe machine. lhis supporting means at the same time is so constructed as to provide a rigid fulcrum for the levers on which they are maintained in the proper alignment and accurately guided in their movements.

Thekey-lever support comprises, preferably, a sheet metal plate 20, of substantially channel shape, extending transversely of the frame below the inactive type-bar position. The plate has a central top portion which is stepped or generally inclined so as to lie substantially parallel with the type bars, thereby facilitating the compact positioning of the bridge below the latter and in such a manner as to leave additional space below the bridge for the'reception of various other parts of the machine wh ch it is unnecessary to describe herein. FOP- wardly and rearwardly of this top portion of the bridge, the sides or flanges of the plate are turned downwardly as at 21 and 22 to provide the desired rigidity. A bottom plate 23 is preferably secured to the depending flanges 21 and 22 to close the bottom of the bridge but this may be dispensed with;

In the construction of the bridge, the plate 20 from which it is formed preferably has cut therein while in flat condition a plurality of slots 24 arranged to extend from front to rear of the machine for the reception of the key levers. The flanges 2i and 22 are turned downwardly and the manterial of the central or top portion of the plate between the slots 24:; is stamped up into longitudinally extending steps to produce the general transverse inclination described and shown, and the metal of each ste is struck downward-1y as at 25 in lines which thus extend longitudinally. of the bridge or transversely of the machine and are spaced from front to rear of the latter ire eases to correspond in number with the number of groups or banks of key levers. These portions 25 provide bearing depressions in which are pivotally supported trunnion means carried by the levers. That is to say, each key lever is provided with a trunnion 26 extending from opposite sides thereof and preferably formed by a cylindrical pin or spindle passed through the lever. These trunnions of each lever lie in depressions 25 formed in the plate on either side of the corresponding lever slot. Each bank of keys thus has its levers pivotally supported on a common. axis extending transversely of the machine, with the axes of the different banks spaced from each other in. a direction inclined to correspond with the inclination of-the inactive position of the type bars.

The material of the bridge lying between the bearing depressions in each axis of support is preferably struck upward on an are as at 27, these projections thus alternating with the depression in each axial line and being staggered relativel to each other from front to rear of mac inc, as shown in Figure 3,. .By reference to the drawings it will be seen that the described depressions and projections of the metal at the sides of the slot increase the effective depth of the latter, or in other words that each lever in its slot lies between depressed and elevated portions of the bridge on both sides which thus provide guide surfaces for the lever of substantial transverse extent 'efiectively maintaining the alignment of the lever in a vertical plane. Each lever of course lies in aslot 24 of considerable length which like wise effectively maintains its longitudinal alignment, the slots 24.- being accurately milled or ground after the 'bridge is stamped up, preferably, to increase the procision of the key-lever action. It is to be noted also that the trunnion of each lever abuts at its ends the sides of adjacent levers which prevents possible displacement of the trunnions relative to their respective levers.

Mfeans are provided for holding the lever trunnions in their hearing depressions comprising preferably a one-piece sheet metal plate 28 of the form shown in Figure 2, iaving at its forward and rear sides lugs 29 and 30 respectively secured as by means of screws 31 to projections 27 of the bridge.

The cover plate has projecting from its forward and rear sides, also, series of fingers 32 and 33 respectively, bent downwardly flOIll the body of the plate to rest upon the key lever trunnions of the forward and rear axes. Plate 28 has struck downwardly from its central portion a series of fingers or lugs 34 which rest upon the lever trun-. nions of the central axis, so that this 0110- iecc cover maintains all of the trunnions in their respective bearing depressions.

1,5a4,see

The means for attaching the ends of the key-lever bridge to the side walls of the main frame comprises preferably pairs of lugs 35 turned inwardly toward each other from the depending flange portion 21 and 22 of the bridge and secured to the sides of the main frame as by means of screws 36.

The construction of the key-lever bridge thus comprises essentially but two parts, the bridge proper or plate 20, and its cover member 28, which are economically formed from sheet metal in such a manner as to afford a rigid support, with its parts so arranged as to effectively support and guide the key levers for accurate pivotal movement on their trunnions. the bridge is so designed as to combine with the described advantageous arrangement of the type bars to produce an exceedinglycompact construction, reducing the overall dimensions and weight of the machine which is a consideration of particular importance in machines of a portable type.

I claim as my invention:

1. In a typewriting machine, the combination of a main frame, a platen thereon, type bars having a swingin movement from inactive to striking positlon, key levers opera Lively connected with said type bars and arranged m banks, and a bridge constructed of a single piece of material extending across the main frame for supporting the spindle means of the levers with the axesof those of each bank arranged in a common center and the axes of those of different banks spaced relatively to and substantially parallel with each other.

2. In a typewriting machine, the combina tion of a frame, a movable platen thereon, type bars movable from forwardly and upwardly inclined inactive position to upwardly and rearwardly inclined striking position, key leversioperatively connected with said type bars and arranged in banks, and a bridge constructed of a single piece of material extending across the frame for suppo 'ting the levers with the axes of those of each bank arranged in substantial alinement, and the axes of those of different banks spaced relatively to each other and arranged in a forwardly and upwardly inclined plane.

3. In a typewriting machine, the combination of a frame, a platen movable thereon, type bars, a sector in which the type bars are supported for movement from an upwardly and forward ly inclined inactive position to an upwardly and rear-wardly inclined striking position, key levers arranged in banks,-supporting means therefor arranged beneath the inactive position of the ty e bars and comprising a device constructe of a sin le piece of material providin pivotal axes or said banks of levers space from each other and arranged in a forwardly and upwardly At the same time inclined plane, downwardly and rearwardly inclined portions on said levers, and means connecting the rear ends of said levers with the type bars.

4. In a typewriting machine, the combination of a frame, a platen movable thereon,

type bars, a transverse member on the frame bars.

5. In a typewriting machine the combination of a main frame, a platen thereon, type bars having a swinging movement on the frame from an upwardly and forwardly inclined inactive position to an upwardly and rearwardly inclined platen striking position, key levers connected with said type bars and arranged in banks, and a sheet metal key lever bridge arranged on the frame below T said inactive type bar position at an inclination corresponding substantially with the latter and formed to provide supports spaced in the direction of inclination for the different banks of levers. v

6. In a typewriting machine, the combination of a main frame, a platen thereon, striking type bars on the frame. having an inactive position inclined upwardly and forwardly of the machine, a sheet metal support arranged on the frame below said inactive type bar position at an inclination corresponding substantially with the latter and formed with slots for the reception of key lovers, the strips of the support between said slots being struck upwardly and downwardly to form projections and depressions for guidingsaid levers, and key levers having portions extended through said slots downwardly andrearwardly of the machine forconnection with said type bars and provided with trunnions pivotally carried in said depressions of the support. 7. In a typewriting machine, the combination of a main 'frame, a platen thereon, striking type bars on the frame having an inactive position inclined upwardly and forwardly of the machine, key levers disposed in banks, a sheet metal support arranged on the frame below said inactive type bar position and inclined upwardly and forwardly to correspond to the position ofthe latter and formed with guide slots .to receive the key levers, said support having bearing depressions formed therein extending transversely of the machine and spaced from one another from front to rear of the latter to correspond with the different banks of key levers, means carried in said depressions for pivotally supporting the corresponding levers, and actuating connections between the levers and type bars.

8. In a typewriting machine, the combination of. a main frame,'a platen thereon, striking type bars on the frame having an inactive position inclined upwardly and forwardly of themachine, key levers disposed in banks and connected with the type bars, a sheet metal support arranged on the frame below said inactive type bar position and inclined upwardly and forwardly to correspond to the position of the latter and formed with guide slots to receive the key levers, said support'having hearing depressions formed therein'extending transversely of the machine and spaced from one another from front to rear of the latter to correspond with the difi'erent banks of key levers, trunnions pivotally supporting the levers in the corresponding depressions, and a plate on said support provided with means for retainin aid trunnions in said depressions.

9. In a typewriting machine, the combination with a frame and key levers thereon arranged in groups, of supporting means on the frame for said levers comprising a one piece sheet metal bridge having bearing portions struck therefrom extending transversely of the machine in lines spaced relatively to one another from front to rear of the latter, one for each of said groups of levers, and devices on said levers pivotally supporting the same on said bridge bearing portions.

10. In a typewrit'ing machine, the combination with a frame and key levers thereon arranged in groups, of supporting means on the frame for said key levers comprising acne-piece sheet metal bridge having hearing portions struck therefrom extending transversely of the machine in lines spaced relatively to one another from front to rear of the latter, one for each of said groups of levers, devices on said levers pivotally supporting the same on said bridge bearing portions, and a member secured to said bridge and having means for retaining said lever devices on said hearing portions.

11. In a typewriting machine, the combinationwith a frame and key levers arranged in groups, of supporting means on the frame for said levers comprising a sheet metal menses plate slotted for the reception of the levers with bearing depressions struck therein extending transversely of the machine and spaced relatively to one another from front to rear of the latter to correspond with the different groups of levers, and trunnion means extending from opposite sides of each lever and pivotally supported in the corresponding bearing depression.

12. In a typewriting machine, the combination with a frame and key levers thereon arranged in groups, of supporting means on the frame for said levers comprising a sheet metal plate slotted for the reception of the levers with hearing depressions and intermediate projections struck therefrom in lines extending transversely of the machine and spaced from front to rear of the latter, one for each group of levers, trunnion means carried by said levers and resting in said bearing depressions, and a cover plate secured to said projections and provided with means for retaining said trunnion means of the levers in said bearing depressions.

3. In a typewriting machine, the combination with a frame and key levers thereon arranged in groups, of supporting means on the frame for said levers comprising a transversely extending sheet metal plate having a series of guide slots therein for the reception of said levers with the metal at the sides of said slots struck in opposite directions to increase the effective depth thereof and to provide bearing portions for said levers, said bearing portions being ar' ranged in lines extending transversely of the machine and spaced from front to rear of the latter to correspond with the diflerent groups of levers, and bearingmeans pivotally supporting said levers in the respective bearing portions of the plate.

14. In a typewriting machine, the combination with a frame and key levers thereon arranged in groups, of supporting means on the frame for said levers comprising a transversely extending, substantially channel-shaped plate of sheet metal formed with a series of guide slots for the reception of said levers and with bearing surfaces for the levers between said slots arranged in lines extending transversely of the machine and spaced from front to rear thereof to correspond with the different groups of levers, and means-pivotally supporting the levers on said bearing surfaces.

GEURGE l ROSE

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