US1942747A - Manifolding device - Google Patents

Description

Jan- 9, 1934- G. o. DEGENER MANIFOLDING DEVICE" Original Filed July 50, 1930 Patented `an. 9, 1934 PATENT OFFICE isniivIFoLDINGI DEVICE Gustave O. Degener, San Francisco, Calif., as-

signor to Royal Typewriter Company, Inc., New York, N. Y., a corporation of New York Original application July 30, 1930, Serial No. 471,802, now Patent No. 1,917,100, dated July 4, 1933. Divided and this application April 22, 1932. Serial No. 606,965

1 Claim.

This invention relates to new and useful improvements in typewriting machines generally, although more particularly to the platen element thereof.

This application forms a division of my copending application Serial No. 471,802, now Patent Number 1,917,100, filed July 30, 1930.

Among the several yobjects of my invention are to provide a non-rotatable platen adapted especially for use in connection with continuous interfold billing machines; to provide such a platen with oppositely disposed relatively hard and soft impact-receiving surfaces, and to provide means for mounting the platen-on a support whereby the platen may be easily reversed and positively retained in either of its printing positions.

In the drawing:-

Figure 1 is a vertical sectional View through a typewriter carriage showing the application of my invention,

Figure 2 is a perspective View of the reversible non-rotatable platen, together with the front end of the supporting links therefor,

Figure 3 is a detail horizontal sectional view showing the connection between one end of the platen and the supporting link whereby the platen is retained against rotation,

Figure 4 is a detail horizontal sectional view showing the other end of the platen and its connection with the platen supporting link, the View showing particularly the means for releasing the platen from the link.

Referring to the drawing and particularly to Figure 1 thereof, I have illustrated my improved platen and support therefor as being applied to a typewriter carriage A which includes end plates 5. Extending between the end plates is a lower guide roller 6 for the work sheets (not shown) which are of indeterminate length and which are led forwardly thereunder and thence upwardly in front of the platen C to feed rollers 6a and 'i located above the platen. The typewriting machine includes the usual type bars D provided with upper and lower types 8 and 9.

The platen C is non-rotatable and is reversible so as to present either a relatively soft printing surface o1' a relatively hard printing surface to the type. When it is desired to employ a large number Iof record copies the hard surface is used and when it is desired to employ a comparatively small number of record copies the soft surface is used. The platen consists of an elongated member or casing which is U-shaped in cross section and is formed of sheet metal or other hard substance. This casing includes spaced top and bottom walls 10 and 11 and a transversely curved or convex printing surface 12. The casing is lled with an insert 13 of rubber or other relatively soft material, the face 14 thereof opposite the connecting portion 12 being correspondingly curved to form a printing surface. Thus the connecting portion 12 forms a relatively hard printing surface and the outer face 14 of the insert 13 forms a relatively soft printing surface. 'Ihe platen C is connected to supporting links 15, 15 in a manner to permit the platen to be reversed so as to present either the hard printing surface or the soft printing surface to the type. Disposed within and located at opposite ends of the platen casing are metal filler blocks 16 and 17 respectively. Secured to the outer end of the filler block 16 is a plate 18 and the ends of this plate project beyond the front and rear edges of the casing, and each projecting portion is formed with a locking recess 19. Extending longitudinally of the platen from the plate 18 is a pin 20 which is engageable in an opening 21 formed in one of the supporting links 15. The pin is disposed equidistant from the recesses 19, 19 and consequently either of said recesses 19 is adapted to engage a fixed stop pin 22 secured to the supporting link 15 having the opening 21. Carried by the ller block 17 is an outwardly pressed spring pin 23 which is adapted to engage in an opening 24 formed in the other supporting link 15. Thus when it is desired to reverse the platen C the pin 23 is pressed inwardly so as to become disengaged from the associated link 15, and the platen is then withdrawn from engagement with the other supporting link 15. The platen is then reversed, the pin 20 is inserted in the opening 21, and the proper recess 19 is engaged with the stop pin 22, after which the pin 23 is repositioned in the opening 24. Thus the platen is held against rotation, is readily removable, and is likewise readily reversible so as to present either of two different printing surfaces to the type.

The platen-supporting links 15 are suspended from the carriage B through the medium of the 100 links 25, 26 whereby the platen may be moved bodily in a rearward direction from its forward printing position in order to relieve the normal tight contact relation between the work sheets and the interleaved carbon strips, and the platen, 105 during the line spacing operation of the work sheets whereby the carbon strips will not be dragged upwardly therewith as fully explained in my parent application above identified.

I claim:-

In a manifolding device, the combination With spaced supports, of a reversible platen disposed between and having trunnion bearing in said supports and provided with hard and soft' printing faces, means including a spring pressed pinfor removably connecting the platen to said supports, and means cooperating with the platen and With one or" the supports for retaining the platen TBCSSSCS.

GUSTAVE O. DEGENER.

Images