US1517506A - Typewriting machine - Google Patents

Description

Dec, 2, 1924.

E. B. HEss TYPEWRITING MACHINE Filed May 3, 1924 Patented Dec. 2, 1924. l

UNITED STATES i N1,517,506 PATENT oEElcE.

EDWARD B. HESS, OF NEW YORK, N. Y., ASSIGNOB TO ROYAL TY PEWRITER COMPANY, INC., OF NEW YORK, N. Y. A CORPORATION OF NEW YORK.

TYPEWRTTING iimcrmiia.v

Application led May 3,

To all whom z't may comer/n.: l

Be it known that I,.EDWARD B. Huss, a vcitizen of the United States, residing in New York city, county andState 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 feeding and guiding mechanism of typewriting 10. 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 lin 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 normall hold the paper after passing around the ont of the platen with a yielding pressure upon the upper portion of the platen. Means have heretofore been provided, and as shown in prior patents issued to the Royal Typewriter Company, Inc., for somoving these upper pressure and guiding rolls that they may be changed from their normal or working ition on the top of the platen to a position in rear of the platen and in rear of the paper table.

One of the features of my present invention consists in so mounting the upper 'pressure rolls of typewriting machines that they may be conveniently moved from their normal position above and in contact with the platen to a position a considerable dis-v tance in front thereof so as to leave a clear space between the rolls and the front of the platen for the insertion and adjustment of the paper and for making erasures. In the Standard Royal machine the upr pressure rolls are mounted in a vertca y swinging frame, known as a bail, which is pivotally connected with the side plates of the carriage frame in rear of the platen and which .carries at its front end a horizontally arranged rod on which the pressure rolls are Ymounted to turn and to slide endwise. This roll-carrying rod, while swinging u wardl and rearwardly has no movement orwar of the platen.

According to my invention, I mount the roll-carrying rod in such manner that it may be moved forwardly away from the i924.A serial No. 710,798.

platen so as to leave a clear space between the rolls and the front of the platen for the insertion and adjustment of the paper and for making erasuies.

While I have, devised several means for laccomplishing these results, in the p-resent case the results are accomplished by extending the. side arms of the bail forwardly from the platen `and providing them with guides in'which the roll-carrying rod is mounted and in which said rod may be moved back and forth towards and from the platen; The roll-carrying rod is provided with means for normally holding the rolls yieldingly incontact with the platen which means permit the roll-carrying rod to be moved forwardly awa from the platen, and means is also provi ed for holding the roll-carrying rod in its withdrawn aper table, and E, a pan orv paper guide y eneath the platen. These may be of usual construction. The bail, as .heretofore, comprises two side arms or members which are pivotally connected with the carriage frame at F. Each side arm G, lit will be observed, is pivotally connected with the carriage frame in rear of the platen and -near its ivoted end is connected by means of a spring H with the carriage frame, at h. Each ofthese springs is so disposed that it tends to pull the front end of the bail towards the platen and it also serves to hold the bail in its upper or withdrawn position when the spring passes over tothe rear side of the pivot F. Such springs are known as over-throw springs.

In the Royal Standard machine the side arms ofthe bail terminate above the platen, but accordin to my invention each side arm is extended orwardlyand each of said side arms is provided with a guide in which one end of the roll-carryin rod M is supported. Various' forms of gui es may be emplo ed, but preferably each of the side arms is formed with a horizontally arranged slot g, in which one end of the rod M is mounted. Either one end or each end of the bar may be provided with a knob or handle N to facilitate in adjusting the roll-carrying rod and to each end of the rod M is connected a spring S which extends rearwardly and downwardly to a stop lug L on an arm G of the bail. This stop lug L is adapted to engage the carriage frame and to limit the downward movement of the bail. Each spring S tends to p'llll the roll-carrying rod M towards the laten and to cause the rolls R to exert a yie ding pressure on the platen. The springs are of such nature that they permit the roll-carrying rod to move forwardl in the guides g to a position a considera le distance from the front of the platen so that the paper may be conveniently inserted and adJusted.

In order to hold the roll-carrying rod in forward position, the slots or guides g may be extended, in the manner indicated at g. In Figure 1 the slot g is extended downwardly and it is formed with a seat g2 for the rod M when in its forward position. In this way the roll-carrying rod may be held away from the laten after the hands of the operator are released.

Instead of extending the guide slots downwardly, as indicated in Figure l, they may be extended upwardly, as shown at g3 in Figure 2. In other respects the construction is the same in both cases.

When desired the bail with the rolls may be lifted and swung backward as heretofore, but it is often not necessary or desirable to do this as the rolls may be withdrawn from the platen by merely moving the rod M for-- ward and downward or upward to locked position.

The springs S-there being one on each side of the machine-draw the rolls with a yielding pressure on the platen. These springs are 0f such elasticity that the roll .carrymg rod may be moved from a position in front of the platen to the desired extent and they pull the rolls towards and into Contact with the )laten when the rod M is released. The rolls R, it will be observed, are held in Contact with the platen by two forces exerted by the springs S and also by the springs H and these springs are best disposed in the manner shown.

I claim as my invention:

l. In a typewriting machine, the combination with the platen of a bail having side arms extending beyond the front of the platen and having horizontally arranged guides, a roll-carrying rod mounted in these guides and adapted to move therein towards and from the platen, and means for holding the rolls yieldlngly on the platen.

2. In a, typewriting machine, the combination with the platen of a bail having side arms extending beyond the front of the -platen and having horizontally arranged guide slots, a roll-carrying rod mounted in said slots and adapted to` move therein towards and from the platen, and means connected with said roll-carrying rod for yieldingly moving said rod with the rolls towards and from the platen.

3. In a typewriting machine, the combination with the platen of a bail having side arms extendin beyond the front of the platen, and having guides formed with locking seats, a roll-carrying rod mounted in the guides and adapted to move therein towards and from the platen and to enter the locking seats, and means connected with said rollcarrying rod for holding the rolls yieldingly on the platen.

4. In a typewriting machine, the combination with the platen of a bail having side arms extending beyond the front of the platen, and having horizontally arranged guides, a roll-carrying rod mounted in said guides and adapted to move therein towards and from the platen, and means connected with said rod for holding the rolls yieldingly on the platen, and springs associated with the rear ortions of the bail arms for drawing their ront ends towards the platen.

5. In a typewriting machine, the combination with the platen of horizontally arranged arms extending forward from the platen and having horizontally arranged guides, a rod mounted in said glides, and pressure rolls carried by the rod.

6. In a typewriting machine, the combination with the platen of horizontally arranged arms extending forward from the platen and having horizontally arranged guides, a rod mounted in said guides and movable horizontally therein, pressure rolls carried by the rod, and springs normally drawing the roll-carrying rod toward the platen.

7. In a typewriting machine, the combination with the platen of horizontally arranged arms extending forward from the platen and having horizontally arranged guides provided with seats, a rod mounted in said guides and movable towards and from the platen and adapted to enter said seats, and pressure rolls carried b the rod.

S. In a typewriting machine, tlie combination with the platen of supports arranged forward of the platen and having therein fore and aft arranged guides and a rod mounted in said guides and pressure rolls carried by the rod.

In testimony whereof, I have hereunto subscribed my name.

' EDWARD B. HESS.

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