US1531937A - Typewriting machine - Google Patents

Description

March 31, 1925. 1,531,937

E. B. HESS TYPEWRITING MACHINE Filed July 8, 1924 2 Sheets-Sheet 1 March 31. 1925. 1,531,937

E. B. HESS TYPEWRITING MACHINE Filed July 8, 1924 2 Sheets-Sheet 2 Patented Mar. 31, 1925.

UNITED STATES PATENT OFFICE.

EDWARD B. HESS, OF NEW YORK, N. Y., ASSIGNOR TO ROYAL TYPEWRITER COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

.TYIPEWRITING MACHINE.

Application filed July 8,

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, in the county 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 guiding mechanism of typewriting machines, particularly to the overhead or upper feed rolls which cooperate with the paper after it has passed the printing line. In the usual Royal standard machine, the paper is fed under the platen and held thereto yieldingly by means of a group of feed rolls lying beneath the platen. These can be moved away from the platen-when it is desired to insert or arrange the paper.

These usual lower feed rolls cooperate I with pressure rolls which normally bear upon the paper and hold it yieldingly against the platen after it has passed the printing line. These feed rolls have been carried in a frame which is pivoted in the platen carriage at the rear of the platen and movable upwardly and rearwardly to move the rolls to an inoperative position when it was not desired to use the same.

It has also been proposed to mount in the front ends of this pivoted frame a roll carrying bail which shall be movable independently of the bail to a position in which the feed rolls lie a sufiicient distance in front of the platen to permit paper passing around the platen to feed upwardly between the rolls and the platen without any interference or manipulation.

It has further been suggested, as shown in my prior application Serial No. 710,798, tiled May 3, 1924, to have this forwardly movable roll carrynig bail slidably mounted in the front ends of the pivoted frame. I

An object of the present invention is to improve on this construction and provide a bail carried by arms which telescope in the arms of the frame or slide thereon, and wherein the supports for the pressure rolls are located entirely behind the same. Means are provided for limiting the movement of the bail in either direction and for hold- 1924. Serial No. 724,301.

ing it against accidental displacement from.

either position.

Other objects will be apparent from the following detailed description and the appended claims.

In the drawings:

Figure 1 is a top plan view of the overhead bail applied to the carriage of a typewriting machine with the rolls in operative position.

Figure 2 is a side elevation of a portion of the carriage and machine frame looking from the right side of the machine with the forward position of the rolls indicated in dotted line.

Figure 3 is a similar view of a modification.

Figure 4 is a similar view of another modification.

Figure 5 is a section on the line 5 5 of Figure 4.

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

Figure 7 is a side elevation of still a further modification.

Figure 8 is a top plan view thereof with a portion in section.

The drawings illustrate a portion of a typewriting machine frame A, type bar B, type bar guide I), ribbon vibrator G, shift rail ID, card guide E supported from the shift rail, side plates F of the carriage in which is supported a planten G, a aper apron H, the usual paper table I pivoted at i and held in either the forward position of Figure 2 or a rearward inoperative position by springs z", a cross bar J connecting the side frame members of the'car- The arms rin s N are so positioned with regard to t e pivots I that when the overhead bail frame is swung to the rearward inoperative position about the pivots Z, said springs will then hold it in that inoperative position.

Accordin to this invention there is provided a rol carrying bail which is telescopically related to the overhead bail just described. This comprises a rod 0 preferably having scale gradations and having thereon ad us'table and rotatable pressure rolls P. This rod is carried at its ends by arms Q, one or both of which is provided with a handle Q. In the modification shown in Figures 1 and 2, the side arms L of the overhead bail are provided with bent over lugs L which are turned outwardly. Q are slidably retained by these lugs as will be evident from Figure 2. One or both of the arms Q is provided near its free end with a notch q and a downwardly extendin lug g at the rear side of said notch. prings Q connected to the arms Q near the upper side of their rear ends and .to the arms L at a considerably lower point, tend to draw the roll carrying bail rearwardly and downwardly.

The front pair of lugs L permit the arms Q to have a slight rocking movement. When the-roll carrying bail is moved forward to bring the rolls to the dotted line position of Figure 2, the arms Q will drop slightly at thelr rear ends and the notch will engage the lower rear lug L and hold the bail against rearward movement. The springs Q exert suflicient of a downward pull on the arms lug in engagement. Thelug g prevents the hail from being pulled too far forward by a sudden movement. Upon the return movement, the handle Q engages the upper forward lug to limit the rearward movement.

By this form of mounting it will be noted that the support for the roll carrying rod is entirely in the rear thereof at all times, and since the arms L lie outside the ends of the platen, there. isnothing to interfere with the passage of paper around the platen and up over the printing line between the platen and the pressure rolls when in said inoperative osition. The rolls thus cooperate with t e card guide when returned to working position and at no time do they form any obstruction.

In the modification shown in Figure 3, the rod O'is carried by arms R in the form of rods which slide in strap bearings L on the outside of the arms L. A spring 7 surrounding the rods between the bearings bears against a pin 1" and against one bearing and tends to hold the roll carrying bail in operative osition. The rear end of each rod is provi ed with a ca R which strikes the bearing to limit the orward movement Q to hold the notch and and also contacts with as pin 1' to limit the rearward movement.

' In the modification illustrated in Figures 4, 5 and 6, the forward ends of the arms L are formed like troughs as shown at L in Figure 6. The arms S which support the roll carrying rod 0 has a slotted portion .9 in which is placed a compression spring 8'. A plate S which covers the open side of the trough L and is fastened at its rear end to the arm L, has near its front end a pin 8 against which the forward end of the spring 8 bears while the rear end thereof bears against the rear portion of the slot in the arm. S. The spring therefore is compressed when the roll carrying bail is moved forward and tends to return the parts to normal position.

In the modification illustrated in Figures 7 and 8, the roll carrying rod 0 is supported in the ends of arms which are in the form of flattened tubes T which telescope in similar flattened tubes L Which form continuations of the arms L of the overhead bail. A pin t is carried by the front end of each flattened tube L and slides in a slot t in the tube T. A spring T is interposed between the pin and an inwardly bent tongue portion 16' of the tube T. When the roll carrying bail is moved forward, the spring T is tensioned and tends to return the parts to normal position. The tongue and compression spring obviously prevent excessive forward movement of the pressure roll bail.

All forms of the invention present compact arrangements of telescopic supports which are located entirely in the rear of the pressure rolls and are readily moved to and from operative position. In every case the roll carrying bail can be moved sufficiently in front of the platen to permit paper to be fed up without manipulation.

. Various detail changes may be made without in any way departing from the spirit of the invention which 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 combina tion of a platen carriage, a rearwardly movable frame mounted therein, and a forwardly movable roll carrying bail ruescopically carried by the front ends of said frame.

2. In a typewriting machine, the combination of a platen carriage, a rearwardly movable frame mounted therein, a forwardly movable roll carrying bail telescopically carried by the front ends of said frame, and means for-limiting the telescopic movement in each direction.

3. In a typewriting machine, the combination of a platen carriage, a rearwardly movable frame mounted therein, a forwardly movable roll carrying bail telescopically carried by the front ends of said frame, and means tending to draw the bail to its rearward operative position.

4. In a typewriting machine, the combination of a platen carriage, a rearwardly movable frame mounted therein and having side arms, and a forwardly movable roll carrying bail having side arms adapted to telescope with the side arms of said frame;

5. In a typewriting machine, the combination of a platen carnage, a rearwardly movable frame mounted therein and having side arms, and a roll carrying bail having side arms slidably carried by the side arms of the frame and having its support entirely behind said rolls, said bail movable forwardly to a position in which it lies a considerable distancein front of the platen.

6. In a typewriting machine, the combination of a platen carriage, a rearwardly movable frame mounted therein and having side arms, a forwardly movable roll carrying bail having side arms lying along said frame arms, and bent over lugs on said frame arms guiding and retaining the bail side arms.

7. In a typewriting machine, the combinatioii of a platen carriage, a rearwardly movable frame mounted therein and having side arms, bent over lugs on said side arms, a roll carrying bail having side arms retained and guided by said lugs for telescopic movement, and means on said bail side arms to engage one of said lugs and hold the bail in forward position.

8. In a typewriting machine, the combination of a platen carriage, a rearwardly movable frame mounted therein and having side arms, bent over lugs on said side arms, a roll "arrying bail having side arms retained and guided by said lugs for telescopic movement, means on the bail side arms to engage one of said lugs and hold the bail in forward position, and spring means retaining said holding means in engagement and also tending to move the bail to operative position.

9. In a typewriting machine, the combination of a. platen carriage, a rearwardly movable frame mounted therein and having side arms, guides on said side arms, a roll carryin bail having side arms retained and guided by said guides, stops for limiting the movement of the roll carrying bail in either direction, and means tending to move the bail to operative position.

10. In a typewriting machine, the combination of a platen carriage, a rearwardly movable frame mounted therein and having side arms, uides on said side arms, a roll carryingball having side arms retained and guided by said guides, means for latching the bail in forward position, and spring means retaining the latching means in operative position, but moving the bail to operative position when the latching means is released.

11. In a typewriting machine, the combination of a platen carriage, a forwardly movable roll carrying bail telescopically carried b the ends of the carria e.

12. n a typewriting machine, the combination of a platen carriage, a forwardly movable roll carrying bail telescopically carried by the ends of the carriage and means for limiting the telescopic movement in each direction.

13. In atypewriting machine, the combination of a platen carriage, a roll carrying bail carried by side arms which are slidably supported entirely behind said rolls, said bail movable forwardly to a position in which it lies a considerable distance in front of the platen.

In testimony whereof, I have hereunto subscribed my name.

EDWARD HESS.

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