US1516532A - Typewriting machine - Google Patents

Description

E. B. HESS TYPEWRITING MACHINE NQV. 259 1924- 2 Sheets-Sham. 1

Filed April 15. 1924 Nam 25 E924- E. B. HESS TYPEWRITING momma Filed April 15, 1924 2 Sheets-Sheet 2 llllnllllllll lllllllllllllll l ||||l|| H I IHHHHHHUHHHHHH HHHHHHHHHHHHHHHHHHHIII'W Patent Nov. 1%24.

nnwanp IB. HESS, on NEW YORK, n. 01., Assrenon. ro ROYAL rvrnwnrrnn; GOMPANY,

me,- on NEW YORK, n. Y., a CORPORATION on NEW YORK.

TYPEWRITING MACHINE.

Application filed April s, 1924. Serial no. 706,738.

To all whom it may concern Be it known that I, EDWARD B. HESS, a citizen of the United States, residing in New York city, county and Stateof New York, have invented certain new and use.- ful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to the paper feed-1 ing and guiding mechanism of typewriting machines. In the Royal standard machine as heretofore marketed, the paper is fed under the platen and held in yielding contact therewith by a group of rolls mounted in frames which can be adjusted to withdraw the rolls from the platen when it is desired to insert and arrange the paper upon the platen. These combined feeding, guiding and pressure rolls cooperate with pressure rolls which normally "hold the paper after passing around the front of the platen with a yielding pressure on the upper portion of the-platen. Means have heretofore beenprovided, and as shown in prior patents issued to the Royal Type-- writer Company, Inc., for so moving these upper pressure and guiding rolls that they may be changed from their normal or working position on top of the platen to a position above and in rear of the platen and in rear of the paper table, and in such mechanism as heretofore used provision has also been made for withdrawing the lower rolls from the platen and simultaneously elevat ing the upper rolls.

The primary feature of my present invention consists in so mounting the upper pressure rolls of a typewriting machine that they maybe conveniently moved from their normal position above and in contact with the platen to a position a considerable distance in front thereof so as to leave a clear space between the pressure rolls and the platen for the insertion and the adjustment of the paper and for making erasures.

In the standard Royal machine the upper pressure rolls are mounted in a vertically swinging frame known as a bail*which is pivotally connected with the sideplates of the carriage frame and carries at its front end a horizontally arranged rod on which the pressure rolls are mounted to turn and to slide endwise. This roller carrying rod, while swinging upwardly and rearwardly toward and from the platen, has no movement forwardly from the platen.

According to my invention I mount the roller carrying rod in such manner that it can be swung forwardly away from the platen so as to leave a clear space between the rolls and the front of the platen for theinsertion and adjustment of the paper and for making erasures.

It sometimes happens that the bail or frame supporting the rod on which the pre sure rolls are mounted becomes slight y twisted or distorted in such manner as to cause the rolls to bear with unequal pressure on the platen. "I- have devised means whereby this objection may be overcome.

' This I preferably do by causing the stops.

for the rod-carrying links to beindependently adjustable in such manner that the roll on one side of the machine may be moved to a greater or less extent than the roll on the opposite side thereof. By this mecha-' nism great flexibility in the operation of the machine is obtained, as provision is made for so moving and adjusting the mechanism as to cause the rolls to bear with equal pressure on the platen and to be moved away from the platen to such a distance as to facilitate the adjustment of the paper for the making of erasures.

In carrying out my invention 1 in the prethe platen, but. which may be lifted and swung forwardly to such an extentas to hold the rolls at such a distance from the front of the platen that the paper may be readily. inserted and adjusted. The overhanging rearwardly swinging frame or bail is provided i with the usual overthrow springs for holding. it in either its loweredor raised position with the pressure rolls in contact with the platen and the links are provided with similar springs for holding them in such postion as to maintain the pressure rolls on top of the platen or at a distance in front thereof.

In the accompanying drawings:

Figure 1 is fragmentary view of parts of a typewriting machine embodying my invention, looking at the right hand side of the machine. The bail or rearwardly swinging frame is indicated by full lines in lower position and by dotted lines in raised position; one of the pressure rolls is shown by full lines in working position above the platen and by dotted lines in forward position. 1

Figure 2 is a fragmentary view showing the side frame piece at the left hand side of the machine and showing also the pressure roll and its supporting link at the right hand side. Parts of the mechanism at the left hand side are also shown.

Figure 3 --is a fragmentary view of the devices at the left hand side of the machine.

Figure 4 is a detailed view of a portion of the bail frame side piece at the left hand side of the machine.

Figure 4 is a detail view of one of the stops for limiting the movement of the pressure rolls on the bail.

Figure 5 is a lan View of the mechanism shown in other figures of the drawings.

Parts of a typewriting machine carriage frame are indicated at A and B indicates a platen, Cindicates a shift rail, D a type bar segment, E a type bar, F a type bar guide,

. G a card guide and H a vibrator or ribbon guide. The paper table I is of the usual kind, being mounted to swing rearwardly on pivots i. The side pieces of the carriage are connected by a horizontal frame bar'J and a toothed margin stop rail K. The paper, pan beneath the platen is indicated at A.

The overhead, bail or rearwardly swing frame is similar 'to that found in Royal standard machines. It comprises side frame members L, L which are pivotally connected with thecarriage frame plates A at a in such manner that the bail may be swung about these pivots in the manner indicated by full lines and dotted lines in Figure 1. The side frame members L, L are connected by a cross bar M, and overthrow springs N connected to the sides of the carriage and to the bail in the usual way yielding y hold the bail-in either its upper or lower position. When the bail is lowered the springs N cause the pressure rolls to bear yieldingly on the platen.

Instea of supporting the roll carrying rod 0 in the front ends of the bail as here tofore I'mount said rod in the outerendsof' linksP and Q, which are pivotally connected with the front portions of the bail at p, 9.

The rod 0 is of the kind heretofore used, being equipped with a scale plate R and the rollers S are mounted to turn on the rod and to slide longitudinally endwise thereon.

It willbe observed by reference to F igure 5, that the rod 0; is of such length as to extend beyond the ends of the platen so that the pressure rolls may be moved when desired to the extreme ends of the platen to bear on the extreme outer edges of the paper and the arrangement is also such that the paper may be so inserted that its marginal portions extend beyond the ends of the platen and beyond the ends of the pressure rollers when they are adjusted to their full extent.

The links P and Q are of suflicient length being made.

By locating the pivots of the members P and Q. above the plane of the top of the platen and arrangin themas a whole above such plane, I avoid any interferences in the movement of the carriage between such members and devices which are mounted upon the machine in front of the platen.

The link Pat the right hand side of the machine is formed with an upwardly extending arm 3) to which is connected the front end of an overthrow spring T, the rear end of which is connected tothe bail member L at t. The link Q at the left hand side of the machine is formed with a foo wardly extending arm g, carrying a pin Z to which is connected the lower end of an overthrow spring U, the upper end of which is connected with an upwardly extending arm Z on the front portion of the bail frame member L. When in working position the springs T and U hold the rolls S yieldingly on top of the platen. By taking hold of the handle V on the link P the rolls may be raised and swung over to the dotted line position shown in Figures 1, 2 and 3 and held there by the springs T and U.

The links P and Q and the rod 0 constitute a rocking frame carrying the pressure rolls on the outer endv of the bail and they serve to carry the rolls from working position above the platen to a position in front thereof and distant therefrom. I

In order to limit the movement of the roller carrying rod of the rocking frame suitable stops are provided. As shown, the front end of the bail frame member L is formed with lugs l'-,-Figure 4, which are engaged by the pin Z on the arm 9 of the link q but other stop devices may be employed. Thestoppin Z? is used to connect the lower end of the spring U with the link Q and this the pin Z pin is preferably of the form shown in Figurev 4*, i. e., its head is eccentric to the axis of rotation of thepin so that by adj usting the pin about its axis it may operate to stop the movement of the roll-carrying rod at different points so that in. case of need ifone end of the rod is inclined to move too far away from the platen it may be m'ade to have its movement adjusted sothat an equal pressure of the two rolls on the platen may be obtained. The movement of the rocking frame on the right hand side sideof the machine is limited by a pin l carried by a projection p on the link P. The in Z is similar to the pin 1 shown in Figure 4. The frame L on the right hand side of the machine is formed with stops Z similar to the stops L and these stops are engaged by The bail frame member L is formed with a downwardlyprojecting arm which is adapted to engage the side plate at the right hand side of the carriage and the member L" is formed with a downwardly extending arm m which engages the frame piece J when the bail is lowered.

It will thus be seen that provision is made for inserting the paper X to be written upon in working position on the platen with the greatest facility. When the pressure rolls are swung to their forward position ample space is provided'for inserting any number of sheets of paper desired. The rolls are held in such position by the overthrow springs and these rolls may be easily turned to working position and held'in contact with the paper with a yielding pressure. These adjustments may be efl'ected without raising the bail but when desired the bail with the pressure rolls may be moved away from the platen in the manner indicated.

When the rolls S are located in their for ward position the pa er may be fed into the machine and move upwardly .across the front of the laten by merely turnng the platen and without raising or moving the rearwardl swinging bail.

It will e observed that my improvements involve a forwardly swinging roller carryng rock frame and a rearwardly swingin bail to which the rock frame is connecte so that when desired, the pressure rolls may be moved away from the platen and in rear of the paper table or when this is not necessary, withoutraising or moving rearwardly the hail, the pressure rolls maybe moved forwardly-away from the platen for the insertion of paper.

The organization is such as to hold the pressure rolls firmly. but 'yieldi'ngly in contact with the platen or the pa er thereon but permits the rolls to be move out of the way when not needed or while. paper is bein inserted or adjusted.

e mechanism which I employ provides greatflexibility for the pressure devices.

The pressure rolls may be quickly moved away from the platen Without lifting the bail or they may be moved bodily away from the platen and in rear of the paper table when desired. The rolls are adjustable in- 1. In a typewriting machine, the combination of a platen carriage, a frame having free front ends mounted therein to move rearwardly from operative position, .and a roll carrying bail carried directly by the front ends of said frame and independently movable forwardly from operative position.

2. In a typewriting machine, the combination of a platen carriage, a rocking frame having free front ends mounted therein to swing about an axis located behind the platen, and a roll carrying bail carried di-. rectly by the front ends of said rocking frame, and independently movable forwardly from operative position.

3. In a typewriting machine,'the combi- 5 nation of a platen carriage, ,a rod extending from end to end of the platen and beyond the ends thereof, pressure rolls adjustable and revoluble on s'aidrod, means for mounting said rod to swing about a horizontal axis in front of the platen, and independent 1 means for moving said rod to an inoperative position in the rear of the laten.

4. In a typewriting mac ine, the combination of a platen carriage, a frame having 10% free front ends mounted therein to swing rearwardly fro operative osit'on, and a roll carryin ail carried irectly by the front ends 0 said frame and independently swinging forward from operative position. 11

a typewriting machine, the combination of a platen carriage, a frame having free front ends mounted therein to swing rearwardl from operative position, a roll carrying ail carried directly by the front ends of said frame and independently swinging forward from operative position, and means for detaining said bail in either of its positions.

6. In a typewriting machine, a bail mounted to swing towards and from the platen about an axis in rear of the platen, a

pressure roll mounted to bear on the upper part of the platen, a rocking frame for the roll, and a pivotal connection between the )rocking frame and the front portion of the bail which rmits the pressure roll to move forwardly om the platen.

7. In. a typewriting machine, a I bail mounted to swing towards and from the laten it is only neces- 7 platen about an axis in rear of the platen, a rocking frame mounted to swing about an axis passin through the front portion of the bail an pressure rolls carried by said i rocking frame.

8. In a typewriting machine, a bail mounted to swing towards and from the platen about an axis in rear of the platen, a

rocking frame mounted to swing about an axis passing through the front of the bail,

pressure rolls carried by said rocking frame and means for limiting the swinging movement of the rocking frame.

, mounted to swing towards and from the platen about an axis in rear of the platen, a rocking frame mounted to swing about an axis passing through the front portion of the bail, pressure rolls carried by said rocking frame, springs for holding the bail in its lowered or raised position'and springs for holding the pressure rolls in their adjusted positions.

11. In a typewriting machine, the combination with a paper carriage and its platen, of a bail mounted to swing about an axis in rear of the platen, a pressure roll and a link connecting the pressure roll with the front portion of the bail which normally holds the pressure roll above the'platen and which permits the pressure roll to be moved away,

from the platen and to a positionin front thereof.

12. In a typewriting machine, a bail mounted to swing towards and from the platen about an axis in rear of the platen, a

roller-carrying rod normally' positioned above the platen, links connecting said rod with the front portions of the bail and which normally hold the rollers above the platen, a spring for holding the rollers in their normal position, means for moving the rollers to a position away from and in front of the platen and a sprlng forholding the rolls in said last mentioned position;

13. In a typewriting machine, the combination with the plat n, of pressure rolls adapted to bear on th top of the platen, a frame supporting the rolls and which is i movable with the rolls from a position above the platen to a position distant therefrom, and an adjustable stop at each end of the frame for limiting the movement thereof in each direction.

14. In a typewriting machine, the-combination. with the platen, of pressure rolls adapted to bear on the top of the platen, a

rod on which the rolls are mounted, pivotal- 1y mounted links supporting the rod, and the outer ends of which are movable from a position above the platen to a position in front thereof, and an adjustable stop adjacent each link for engagingthe same and limiting-its movement in each-direction.

15. In a typewriting machineja frame carrying a plurality of pressure rolls which bear on top of the platen and move away therefrom for the insertion of paper, means fon limiting the movement of each end of the frame toward and from the platen, and devices for separately determining the amount of movement of one end of the frame relatively to the other to cause the rolls to bear with equal pressure on the platen.

16. In a typewritin machine, the combination of a platen, a ail having side arms pivoted .in rear of the platen, a pressure roll, and a support therefor pivoted to the side arms near their front ends said roll ada ted to bear upon the platen in a vertical p ane intermediate the front and rear pivotal pivoted in rear of the platen, a pivoted rocking frame carried by the front ends of said bail, a pressure roll carried by said frame,

spring means for drawing said bail toward the platen, and spring means for independently drawing said rocking frame towards the platen.

18. In a typewriting machine, the combination of a platen, a bail having side arms pivoted in rear of the platen, a rocking frame carried by the front ends of said bail, a pressure roll carried by said frame, spring means located outside the side arms for drawing the bail towards the platen, and springmeans also located outside the side arms for drawing the rocking frame toward the platen.

19. In a typewriting machine, the combination of a platen, a bail having side arms pivoted in rear of the platen, I a rocking frame carried by the front ends of said bail, a pressureroll carried by said frame, spring means having a stationary anchorage on the platen carriage for drawing the bail toward the platen, and spring means having a stationary anchorage on the side arms for drawing the rocking frame toward the platen.

20. In a typewritin machine, the combination of a platen, a IJail having side arms pivoted in rear of the platen, a rocking frame. carrying pressure rolls pivoted to said side arms near their front ends and lying Wholly within the confines of the bail when the'pressure rolls are in working position. 3

21. In a typewriting machine, the combination of a platen carriage, a bail having pivoted to the side arms 'near their front ends, a stop intermediate the ends of a side arm for limiting the movement of the bail toward working position, a stop in rear of the side arm pivots for limiting the movement of the bail awa from working position, and means for llmiting the movement of the rocking frame in either direction.

In testimony whereof, I have hereunto subscribed my name.

EDWARD B. HESS.

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