US1508836A - Typewriting machine - Google Patents

Description

Sept. 16, 1924. I v 1,508,836

G. o. DEGENER TYPEWRI'I ING MACHINE Filed Jan. 9. 1924 Patented Sept. 16, 1924." I

UNITED STATES PATENT I OFFICE.

GUSTAVE 0. DEGENER. 0F HARTFORD, CONNECTICUT, ASSIGNOB TO ROYAL mn- WBITEB COMPANY, INC., OFNEW YORK, N. Y., A. CORPORATION 01" NEW You.

TYPEWRITING MACHINE.

Application filed January 9, 1924. Serial No. 885,237.

To all whom it may concern:

Be it known that I, GUSTAVE O. Dnonmm, a citizenof the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvementsin Typewriting Machines, of which the following is a specification.

This invention relates to the paper feeding and guidin mechanism of ty ewriting machines. In t e Royal Standard machine as heretofore marketed the pa er is fed under the laten and held in yie ding contact therewit by a group of rolls mounted in frames which can be adjusted to withdraw the rolls from the platen when'it is desired to arran e the paper on the laten. These combine feeding, guiding an pressure rolls cooperate with pressure rolls which normally hold the paper after passing around the front of the platen with yielding pressure on the upper portion of the platen. Means has heretofore been provided, and as shown in prior patents issued to the Royal Typewriter Company, Inc., for so mounting these upper pressure and guide rolls that they may be moved from their normal or working position to a position above and in rear of the platen and in rear of the paper table, or to a position a short distance above the platen, and in such mechanism as heretofore used, provision has also been made for withdrawing the lower rolls from the platen and simultaneously elevating the upper rolls.

The principal feature of my present invention consists in so mounting the up er pressure rolls ofa ty ewriting machine t at they may be moved em their normal position on top of the platen to a position a considerabledistance in front thereof so as to leave a clear space between the pressure rolls and the laten for the adjustment of the pa er. is feature of the--mechanism, whlch so far'as I am aware is broadly new,

is preferably combined in a novel way with the valuable features of the paper feedin and iding mechanism. above mentioned and ound in the Royal Standard machine as at resent marketed.

In t e accompanying drawings Figure 1 shows a side elevation of, such parts of a ty writingmachine of the Royal type to whic my im rovements are ap lied as-is necessary to in icate the prefer embodiment of my invention. In this figure ofthedrawing the normal or working positionofthe upper pressure rolls is shown by full lines and certain adjusted ositions of inch pressure rolls are indicate by dotted mes.

Figure 2 is a side elevation of one of the .side arms of the'frame of the u per pres-- sure rollsand indicates how sai frame is pivotally connected with the carriage. In igure 2 the upper pressure rolls are shown in one of the positions which the occu y when raised a short distance a ve t e platen. I

Figure 3' is a view similar to Figure 2 showing the upper pressure rolls raised to a eater extent.

igure 4 is a plan view of the upper pressure rolls, their frame and certam parts connected therewith.

Figure 5 is a perspective view of a latch forming part of the mechanism.

Parts of a ty writer carria e are indicated at A, and B dicates a shift rail for the carriage of the kind found in all Royal Standard machines. The lower rolls for guiding and feeding the paper and pressin it against the under side of the platen are indicated at D and E inbars H ,are pivotally connected at 7' to the upper free ends of the arms J of a cross bar K. The lower ends of the arms J are pivotally connected at k to the. side plates of the carriage. The cross bar K and its arms J constitute a rockingframe to which the side bars H of the roller carrying frame i05 are connected and these side bars with the front cross bar 9 constitute what is termed in this art a bail which supports the upper pressure rolls. This roll carrying frame or bail is movable about an axis in rear of the platen and is also movable fore and indicates a p aten. C inso described. The rear portions of the side aft of the machine so that the front pressure rolls may be lifted away from the platen and moved to a position above and in rear of the platen or they may be moved forwards away from the platen to a position a considerable distance therefrom. Each side bar H of the bail or roll carry ing frame is preferably given the form shown in the drawing. It has a front straight part it and a curved rear part it, being bifurcated or recessed at 71. in rear of its pivotal connetcion with the associated arm J. This construction produces an arm h formed on its-rear curved edge with two recesses or notches w and y. Each bar v H is also formed with a lug h for a purpose hereinafter described. A. knob or handleH' is provided for moving the bail or roll carrying frame to its adjusted positions.

A horizontally arranged spring L connects one-end of the frame bar K with the carriage frame and tends to hold the bail in the normal position shown in full lines in Fig. 1. Vertically arranged springs M (two being preferably employed), connect the vframe bar K with the carriage frame in the manner also indicated in Figure 1. lVhen theparts are inthe'position shown in Figure 1, the springs M hold the bail in normal position a ainst accidental displacement and they a so cause the rolls 9' to in the dotted line press on the platen. It will be observed that at this time the rear end 7& of the side bar H bears on a. roller or locking device mounted on the carriage frame and the springs M which at this time operate in rear of the pivot of the arm J pull the bail downwards, the roller R acting as a fulcrum. In this way the rollers g are held with yielding pressure on the platen.- The spring L tends to retract the bail and also assists in holding the rolls g with a yielding pressure on the platen. The sprin s M are more powerful than the spring but they cooperate to hold the rolls g on the platen when the parts are in the position shown in Figure 1. Y

The bail is so mounted that it may be held yieldingly in various positions as before ltlcscribed and may be moved upwardly and rearwardly to a position above the platen or to a position in rear thereof as indi-' cated by dotted lines at X, Fi re 1. The mounting is also such thatthe ail may be moved horizontally fore and aft of the machine in such manner as to hold the upper pressure rolls g a considerable distance in front of the platen as indicated by dotted lines at Y, Fig. 1. This is a new feature in typewriting machines so far as I am awareand it affords a clear space between the upper pressure rolls and the platen for adjustment of the paper, When the 'roll'sYg osition shown at Fig.

are

mosses at P and is held in close contact with the upper side of the platen. These operations maybe performed by taking hold of the knob ar handle H and giving proper movements to the bail, or the bail may be moved from its normal or retracted position to an elevated position by means of the lever F which adjusts the lower feed rollsD. For this purpose one of the side bars H carries a latch N which is pivotally connected to the In h and is formed with an arm n extending across the top of the associated arm H and with an arm n having an inclined front edge a and a straight rear edge a. When the parts'are'in the position shown in Figure 1 by full lines and the lever F is moved forward to-release the lower pressure rolls. Said lever engages the latch 1* and moves the bail forward until the rolls g assume the position shown at Y. Should the lever F become accidentally displaced, it may me returned to normal position without moving the bail, as the lever will move outwards on the incline n of the latch. The arm n normally holds the latch in-the position shown in Figure 1. By lifting the latch or turning it on its ivot, it may be moved out of the path of t e lever F so that the latter may be operated to adjust the lower pressure rolls without moving the bail. It

Rivill be observed thatthe lever F as usual is slightly bent so that its upper part is not adapted to engage the latch while its mid-' dle portion engages the latch when operated for that purpose- 'When the bail is in normal or working position the. lower end of the arm h of each side bar H rests on the roller R as shown, and the springs L and M hold the rolls g with a yielding pressure on the platen. When the bail is moved to the position shown in Figure 2, the rollers R engage the notches y and the bail is yieldingl held in the position shown in Figure 2. en the bail is raised injthe manner indicated in I Figure 3 the ends of the arms k of the side bars engage stops-s on the arms J and when the bail is lifted to the extentshown at X. Fi ure 1, the rollers R engage the recesses w in the side bars of the bail. It will be observed that the springs M which are connected at their lower ends to the carriage frame and at their upper ends to the cross bar K above the pivotal connections In of the arm J with the frame are so disposed that the upper ends of the spring cross the pivots I: when the bail is moved from one position to another and thus the springs M I 35 l, the paper may disposed as indicated to norma position after being shifted to shift the pressure roll to a position in front the position indicated at Y. When the bait is shifted to the position Y, the lugs h rest on the machine frame as indicated and hold the bail at the proper elevation.

When the bail is moved upwardly to the position shown in Figure 2, the rollers R enter the notches y and the spring M and L tend to hold the bail in the sition to which it is set. When, the bai is moved from the position shown in Fig. 2 to that shown in Fig). 3 or .to that shown in Fi 1 by dotted 'nes' at X, the rollers R ri e along the curved rear ed es of the side bars H. The springs M an L press the side bars against the rollers, thus enabling the bail to be raised steadily and smoothly :from one osition to another.

ile my improvements'are designed especially for use in connection with visible front strike machines of the Royal ty they may be embodied so far as the broadh r features of my invention are concerned, in machines of other kinds.

I claim as my invention:

1. In a typewriting machine a pressure roll and a frame therefor movable about an axis in rear of the platen to lift the roll to a position above the-platen and movable also fore and aft of the machine to of the platen and a considerable, distance therefrom.

2. In a typewriting machine a pressure roll and a frame therefor pivotall mounted in rear of the platen and mova 1e bodily fore and aft of the platen.

3. In a typewritlng machine a pressure roll and a frame therefor associated with a rocking frame in rear of the platen with which it ispivota-lly connected, said rocking frame being movable fore and aft of the machine about an axis in rear of the platen whereby the pressure roll is moved horizontally towards and from the platen.

4. In a typewrit-ing machine wressure roll and a frame therefor associa with a rocking frame in rear of the platen with which it is pivotally connected, and means for holding the roll carrying frame in an elevated position above the platen.

5. In a typewritingmachine a ressure roll and a frametherefor associate with a rocking frame in rear of the platen withwhich it is pivotally connected, andmeans for holding the roll away from the platen in its elevated positions above the platen.

pressure roll and a frame therefor mounted to swing vertically and to move fore and aft of the machine, lower pressure rolls adapted to bear on the under side of the platen,'means for moving the lower pressure rolls into and out of engagement with the platen, and devices operating when the ower rolls are bein withdrawn from the laten for moving t e upper pressure roll ore and aft of the machine to a considerable distance .in front of the platen.

8. In a typewriting machine an upper pressure roll and a frame therefor movable to swing vertically and to move fore and aft of the machine, lower pressure rolls adapted to bear on the under side of the platen, an actuating lever operatively connected with the lower pressure rolls for moving them into and out of contact with the platen, and connections between said lever and the frame of the upper ressure rolls for moving said upper rolls ore and aft of the machine when said lever is oper-v ated to adjust the lower rolls.

9. In a typewriting machine an upper pressure roll adapted to bear on the upper portion of-the platen, a frame in which said roll is mounted comprisin a front cross piece and side pieces having curved rear ortions formed with notches, a rocking rame withwhich the side pieces are connected and a holding device adapted to enter said notches when the roll carrying frame is raised to different positions.

10. In a typewriting machine an upper pressure roll, ahorizontally arranged frame in which it is mounted,-arocking frame pivotally connected with the machine frame and ivotally connected with the roll carrying rame, springs arranged vertically and horizontally connected with the machine frame, and with the rocking frame for holding the pressure roll in enga ement with the platen and in different a ]usted position when raised from the platen and for also holding the frame when moved horizontally forwards to shift the pressure roll to a position in front of the platen.

11. In a typewriting machine the combination with the platen and its carriage, of pressure rolls adapted to bear on the upper portion of the platen, a frame in which said rolls are mounted, and rocking connections between the roll carrying frame and the carriage frame by which the roll carrying frame is movedbodily fore and aft of the machine.

12. In a typewriting machine, embodying the usual paper feed rolls, and means for releasing the same, the combination of an upper pressure roll, a mounting therefor ermittlng the'same to move to a it1on in front ofv the platenand at a considerable distance therefrom to'afiord. a clear space for the adjustment of the paper, and means whereby the movement of said release means will move the upper roll ,to said forward position.

13. In a typwriting machine embodying 5 the usual paper ,feed rolls and means for releasing the same, the combination of an upper pressure roll, a mounting therefor permitting the same to move to a position in front of the platen and at a considerable 10 distance therefrom to afford a clear space for the adjustment of the paper, means whereby the movement of said release means will move the upper roll to said forward position, and means for enabling the' release means to be moved without moving the upper roll.

In testimony whereof, I have hereunto subscribed my name.

GUSTAVE O. DEGENER.

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