US1836906A - Manifolding device - Google Patents

Description

Dec. 15, 193 1. 3. 0. DEGENER MANIFOLDING DEVICE Original Filed May 2, 1929 (Ittornegs,

Patented Dec. 15, 1931 UNITED STATES PATENT OFFICE GUSTAVE DEGENER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 ROYAL TYPE- WRI'IER COMPANY, INC., 015 NEW YORK, N. Y., A.CORPORATION OF NEW YORK MANIFOLDING DEVICE Original application filed May 2, 19%9, Serial No. 359,934. Divided and this application filed May 15, 1930.

Serial No. 452,720.

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

This application forms a division of my copending application Serial No. 359,934, filed May 2, 1929. I

Among the several objects of my invention are to provide a non-rotatable platen adapted especially for use in connection with interfold be easily reversed to present either surface to the work sheets, depending upon the number of copies of work sheets desired to be printed; and to provide the platen with convexed impact-receiving surfaces which cor respond to the usual concaved printing surfaces of the type employed in standard typewriting machines.

In the drawings:

Figure 1 is a vertical sectional view through a type carriage showing the application of my invention;

Figure 2 is a top plan view of the platen showlng its connection with the supporting arms; I v

Figure 3 is a fragmentary front elevation of the platen Figure 4 is an end elevation thereof;

Figure 5 is a cross section taken on the line 5-5 of Figure 2; and

Figure 6 is a cross section taken on the line 66 of Figure 2.

Referring to the accompanying drawings, particularly to Figure 1 thereof, I have illustrated my improved platen as being applied to a typewriter carriage A which includes end plates 5. Extending between the end plates and supported thereby is a lower guide roller 6, and also supported on the end plates 5 is a paper table B over which work sheets are led to a point below thelower guide roller 6. The lead-in ends of the work sheets are then led upwardly in front of my improved platen C. and the free ends of the The typewriting machine includes the usual type bars D which are provided with the usual type 9 and- 10, the said type being provided with concaved printing faces. The platen C is detachably connected at its ends in a manner hereinafter described to supporting arms or links 1111 which are respectively disposed adjacent the end plates 5-5 of the carriage. Each support or link 11 is supported from the carriage by means of a front link 12 and a rear rock arm 13, the latter being fixed to a transverse shaft 14 journalled in the end plates 5 of the carriage.

Fixed to the rock shaft 14 is a cam 15 which The platen C consists of an elongated memher or casing c which is U-shaped in cross section and is formed of metal or other hard substance. This casing includes a'curved connecting portion 17 forming'a printing surface, and spaced top and bottom walls 18-18. The casing isfilled with an insert 19 of rubber or other relatively soft material, the face 20 thereof opposite the connecting portion 17 being correspondingly curved to form a printing surface.- The printing surfaces, that is, the type impact-receiving surfaces, are convexed to fit the concaved printing surfaces of the types-9 and 10. Thus it will be seen that I have provided a platen with oppositely disposed and relatively hard and soft printing surfaces which are curved to fit the curved printing surfaces of the type. The platen C is connected to the supporting links 11 in a manner to permit the platen to be reversed so as to present either the relatively hard face 17 or the relatively soft face 20 to the type, depending upon the number of copies of work sheets desired to be printed. A spring-pressed fulcrum pin 21 extends from one end of the platen for engagement with the associated link 11, and a fulcrum pin 22 which is fixed to the other end of the platen is engageable in an opening in the corresponding supporting link 11. Platen locating lugs 23-23 are rigidly attached to the last mentioned link and 00- the inner ear 24 by a coil spring 28 which surrounds the inner end of the pin and bears at its ends against said shoulder 27 and against the inner or end wall 29 of the recess.

The inner end of pin 21 is normally spaced from the inner end wall 29 of the recess. The pin 22 is fixed to the ears 25.

Thus the above construction permits the ready removal or reversal of the platen by first moving the pin 21 against the tension of the spring28 until said pin is freed from the link 11. After the platen has been freed from both links 11, the platen may be reversed and repositioned so as to present the other printing faces, either 17 or 20, as the case may be, to the type, the lugs 23 serving to retain the platen against rotation.

In view of the above it will be apparent that I have provided a non-rotatable platen for typewriting machines and have provided the same with oppositely disposed relatively soft and hard impact-receiving surfaces; that said impact-receiving surfaces are curved to fit the concaved printing surfaces of the type; and that the platen is mounted on a support in a manner which will retain the platen against rotation but which will permit the platen to be easily removed and reversed so as to present either of said impact-receiving surfaces to the type.

I claim:

1. A reversible platen including a metal casing open along one side and including a connecting portion opposite said open side to form a hard printing surface, and a filler within said casing and forming a soft printing surface extending along the open side of the casing, said printing surfaces being oppositely convexed.

2. In a manifolding device, the combination with spaced supports, of a reversible platen disposed therebetween and provided with hard and soft printing faces, means including a spring pressed pin for removably connecting the platen to said supports, and means cooperating with the platen and with one of the supports for retaining the platen against rotation.

3. In a manifolding device, the combination with spaced supports, of a reversible platen disposed therebetween, said platen comprising a sheet metal casing of U-shaped cross section forming topand bottom walls and a connecting portion, the latter forming a hard printing face, a filler disposed within the casing and having a soft printing face opposite said connecting portion, means for removably connecting said platen to said supports, and means cooperating with the cross section forming top .and bottom walls and a connecting portion, the latter forming a hard printing face, a filler disposed within the casing and having a soft printing face opposite said connecting portion, the top and bottom walls at each end of the platen being provided with overlapping ears, a pin rigidly connected to the ears at one end of the platen for engaging one of the supports, a spring pressed pin mounted on the platen and extending through the ears at the other end of the platen for removably engaging the other support, and means cooperating with the platen and with one of the supports for retaining the platen against rotation.

5. A reversible platen including a metal casing open along one side and including a connecting portion opposite said open side to form a hard printing surface, and a filler within said casing and forming a soft printing surface extending along the open side of the casing.

In testimony whereof, I have hereunto sub scribed my name.

GUSTAVE O. DEGENER.

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