US1532062A - Typewriting machine - Google Patents

Description

March 31. 1925.

L. C. MYERS TYPEWRITING MACHINE Filed July 5, 1924 in 2 Sheets-Sheet l March 31. 1925. v 1,532,062

L. C. MYERS TYPEWRI TING MACHINE Filed July 5, 1924 2 Sheets-Sheet 2 Patented Mar. El 1925.

UNETED? STATES 1,532,062 Parser OFFICE.

EEWIVJ C. MYERS, F FREEPORT, NEW YORK, ASSIGINOR T0 ROYAL TYPEWRITEB COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

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Application filed July 3,

To all whom it may concern:

Be it known that I, LEwIs C. MYERS, a citizen of the United States, and resident of Freeport, in the county of Nassau and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to the paper feed ing and guidin mechanism of typewriting machines. In t e Royal standard machine the paper is fed around the platen by a group of feed rolls which can be released when it is desired to insert or adjust paper upon the platen. There have also been provided combined pressure and feeding rolls which normally hold the paper against the top of the platen after it has passed the printing point. These upper pressure rolls may be moved from their normal or working position on top of the platen to a position in the rear of the platen.

It has also been'proposed to provide upper rolls which are not only capable of such movement to the rear of the platen, but also have an independent movement from their position in contact with the platen to a position a considerable distance in front of the platen so that there is a clear space between these pressure rolls and the platen sufiicient to permit the paper passing around the platen to pass upwardly between the rolls and the platen -without an manipulation thereof. When the forward y movable rolls are then returned to working position they will press the paper against the platen above the printing point.

The present invention relates to certain improvements in such devices and particularly to the cooperative relation between the same and the card-holding mechanism em ployed in the standard Royal machine, or similar card-holding devices.

Further objects of the invention will be apparent from the following detailed description and the appended claims.

V In the drawings I Figure 1 is a side elevation from the right side of the machine showing the application of my invention thereto.

Fi re 2 is a front elevation showin the relation of the card-holding devices, ri bon vibrator, and t pe guide to the roll-carrying bail when the atter is in operative position.

Figure 3 is a top plan view.

1924. Serial No. 724,119.

Figure 4 is a top plan view of a modified support for the bai igure 5 1s a side elevation of the construction shown in Figure 4:.

Figure 6 is a side elevation of a modification of the card holder movable fingers.

There is illustrated a writing mac ine comprismg a ty e se ent A, type bar a, type bar guide aPribb vibrator B, sh1ft rail C, card guide D, acarriage having side frame members E and supporting a platen F, paper apron G and paper table H pivoted at h and held in either ront or rear position by a spring h. All of these parts are illustrated as they appear in the Royal standard machine, but so far as the present invention is concerned they may be of any other old or desired type. There is also illustrated the frame bar e connected to the side plates of the carriage and the usual margin stop bar I.

An overhead bail frame is composed of slde bars L pivoted to the carriage side plates at] and held either in the operative posltlon lllustrated or in a rear inoperative position to which they maybe swung about.

the pivots l by means of springs N fastened at one end to the bars L and'at the other end to the carriage side frame members E. This construction is also illustrated as found in the Royal machine, but may be varied without departing from the invention.

A roll-carrying frame or bail comprises side arms P in the form of bell crank levers pivoted at p to the side bars L. To the short arms of the bell cranks P are fastened one end of springs ,Q, the other ends of which are fastened to the side bars L. These springs are so arranged that they will hold the auxiliary roll-carrying bail in either its operative position shown in full lines in Figure lor in its inoperative forward position shown in dotted lines in the same figure.

Near the front ends of the longer portions 100 of the arms P is mounted a rod R carrying rolls S which are adjustable along the rod and also rotatable thereon. This rod R is usually graduated to form a scale 1'. Each arm P is also provided with a handle P, 1

by which the whole bail may be moved in either direction. The free end of each arm P adjacent its pivot p is formed with a portion T concentric with the pivot and with two stopst, one at each side of the concenportion of a typetric portion. A stud t carried by the arms P cooperates with these stops to limit the movement thereof in either direction. A stop T on each side bar L cooperates with the side of the carriage to limit the downward movement of the overhead bail frame.

The springs Q are attached to two studs 9 and 9 carried by the side bars L and the arms 1 respectively and the stud g moves in a path beyond the end of the arm P so that the springs Q and the studs 9 may be arranged in a plane outside of the bars L although the arms P swing to a position within these bars. Adjacent the pivots p the arms P are connected by a rod R as shown in Figure 3. The arms P, rod R and red It therefore form a substantially reotangular frame which can be made more nearly rigid than prior constructions.

The card holding mechanism shown is of the type illustrated in Patent 1,121,829, llandley, Dec. 22, 1914, or Patent 1,165,171, l-Iess, Dec. 21 1915, in which the arms D of the card-holder are provided with movable fingers d pivoted thereto at d and movable from the operative position shown in Figure 2 in which they cross the printing line adjacent the printing point to a position in which they lie below the printing line. The arms D of the card-holder also support a plate W preferably gradated as a scale plate and provided with outwardly turned ends to. This card-holder is carried by the shift frame C and while it moves with the platen in case shift movements, it is stationary relative to the platen in its transverse or letter space movements. It therefore always bears the same relation to the printing point.

As will be evident from an inspection of Figure 2, the card-holding fingers d engage the sheet on the platen at points below the rolls S, and the latter may be adjusted transversely to engage the sheet at points more widely separated than the fingers d. Since the paper-holding rolls S travel transversely with the platen, it is evident that the sheet will always be engaged at a plurality of points and firmly held against the platen.

WVhen the bail is swung to the dotted line position of Figure 1, it is evident that the sheet may be fed around the platen and will pass upwardly from the card-holding device between the rolls S and the platen without any interference with any of the parts and without any manipulation. It is then only necessary to swing the bail back to operative position and no further adjustment is necessary. A card-holder of this particular type cooperates with the specific bail disclosed to enable rapid positioning and accurate feeding of sheets or stiff cards at all times with a minimum of care on the part of the operator.

So far as this cooperative relation is concerned, it is immaterial what precise form of card-holder or bail is employed, so long as the card-holder engages the sheet on the platen at points across the printing line and adjacent the printing point, while the rolls carried by the bail engage the sheet at points above the points of engagement by the card-holding fingers and are movable to a point in front of the platen to permit the sheet to be fed upwardly between the rolls and the platen without interference or manipulation. It is therefore apparent that various forms of each of these two elements may be employed without departing from the spirit of the invention.

Figures 4 and 5 disclose a modified form in which the roll-carrying rod R is carried by the ends of short arms P which are pivoted to the bars L at 7). These pivots are in the form of screws having shoulders p by which the bars L and arms P are spaced apart. A dish-shaped spring X has bentover lugs a: which lit in cut outs w in the arms L and similar lugs 3/ bent over in the opposite direction and at intervals between the lugs m, which lugs 3 fit in cutouts 1 in the arms P When the roll-carrying bail is rotated on the pivots p, the lugs 3 are cammed out of the cut outs 1 and when the bail has been rotated through an angle of 180 the lugs snap back into the cut outs again. The spring X therefore holds the bail yieldingly in either position.

This modified form of bail has the same cooperation with the card-holding devices as does the other, and in some respects is more simple.

Obviousl various other detail changes may be ma e, and it is to be understood that the invention is to be regarded as limited only by the scope of the appended claims.

I claim as my invention 1. In a typewriting machine, the combination of a platen carriage, an overhead bail mounted in the platen carriage for rearward movement from operative position, a roll carrying bail mounted in the front ends of said first mentioned bail for forward movement from operative position, and card holding mechanism comprising fingers movable to a point across the printing line and engaging the paper at points below the engagement of the rolls carried by said hail, the rolls in their forward position permitting free passage of paper between the platen and rolls without manipulation.

2. In a typewriting machine, the combination of a platen carriage, an overhead bail mounted in the platen carriage for rearward movement, a roll-carrying bail pivoted in the front ends of said first mentioned bail and swinging forwardly to a position where the paper passes freely between the rolls and the platen without manipulation, and cardholding mechanism comprising fingers movable to and from a position across the printing line and engaging the paper in a different horizontal plane from the rolls carried by said bail when the latter is in operative position.

3. In a typewriting machine, the combination of a laten carriage, an overhead bail mounted in the platen carriage to swing rearward, a roll-carrying bail pivoted in the front ends of the first mentioned bail to swing forward, rolls transversely adjustable on said second bail, and card-holding devices comprising fingers crossing the printing line but movable to a position below the same, said fingers engaging the paper in a different horizontal plane from the rolls.

4. In atypewriting machine, the combination of a platen carriage, an overhead bail pivoted in the platen carriage to swing rearward, a roll-carrying bail pivoted 1n the front ends of the first mentione bail to swing forward a considerable distance in front of the platen, rolls adjustable on said bail, means for limitin the swinging movement of the second bail in either direction, and card-holding devices movable to and from a position across the printing line and cooperating to hold the paper in a different horizontal plane from the rolls, the

bail when in forward position allowing the paper to pass between the platen and rolls without interference or manipulation.

5. In a typewriting machine, the combination of a platen carriage, anoverhead'bail pivoted in the platen carriage to swing rearward, a roll-carrying bail pivoted 1n the front ends of the first mentioned bail to swing forward a considerable distance in front of the platen, means for holding the bail yieldably in either of its two positions, and card-holding devices movable to and from a position across the printing line adjacent the printing point and engaging the paper in a lower horizontal plane from the rolls, the bail when in forward position allowing the paper to pass between the platen and rolls without interference or manipulation.

6. In a typewriting machine, the combination of a platen carriage, an overhead bail mounted in the platen carriage for rearward movement, a roll-carrying bail pivoted in the front ends of said first mentioned bail and swinging forwardly therein to a position where the paper passes freely between the rolls and the platen without manipulation, and card-holding mechanism comprising fingers fixed relative to the longitudinal movement of the platen movable to and from a position in front of and across the printing line.

In testimony whereof, I have hereunto subscribed my name.

LEWIS C. MYERS.

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