US2800846A

US2800846A - Apparatus for making ferrotype prints

Info

Publication number: US2800846A
Application number: US453999A
Authority: US
Inventors: Walter M Farley
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-09-03
Filing date: 1954-09-03
Publication date: 1957-07-30
Anticipated expiration: 1974-07-30

Description

July 30, 1957 w L Y 2,800,846

APPARATUS FOR MAKING FERROTYPE PRINTS Filed Sept. 3. 1954 INVENTOR ATTORNEYS United States Patent APPARATUS FOR MAKING FERROTYPE PRINTS Walter M. Farley, Milford, Conn.

Application September 3, 1954, Serial No. 453,539

4 Claims. (Cl. 95-405) The present invention relates to a roller device and particularly to a roller device for use in making ferrotype prints.

In making ferrotype or glossy prints in which a wet printing paper is pressed against a smooth plate, it has long been a problem of securing intimate contact between the emulsion side of the paper and the plate due to entrapped air therebetween and it has also been a problem in producing prints without substantial curl in the direction of the plate as they are dried.

The present invention overcomes these difiiculties by providing a roller which not only presses the paper into engagement with the plate but also applies it in such a manner as to eliminate any air which might be entrapped and which roller in applying the paper also conditions it so as to prevent curl in the print.

This is accomplished by providing a roller with a contactor thereon spaced at least 90 from the point of contact of the roller with the plate, which contactor is provided with a moisture-retaining surface so that when the wet paper for the print passes between the contactor and the roller the contactor holds the paper in engagement with the roller and causes it to put a reverse curve in the paper as it is applied to the plate so as to, in effect, prestretch the emulsion on the outer surface of the curved portion and thereby prevent curling of the paper as the print dries and at the same time will not remove the moisture from the paper.

Further, as the roller moves over the plate to apply the paper thereto, any air which could be trapped between the paper and plate will be squeezed out so that there will be proper and intimate engagement between the paper and the plate.

A feature of the invention resides in the simplicity of construction of the roller and the ease with which it may be manipulated.

Other features and advantages :of the invention will be apparent from the specification and claims when considered in connection with the drawings in which:

Figure 1 is a front view of the roller device.

Fig. 2 is a side view of the roller of Fig. 1.

Fig. 3 is a view, partly in section, of the roller of Fig. 1 showing the application of the print to the plate.

Fig. 4 shows a detailed sectional view of the roller member showing another form of the invention.

As shown in the drawings, the roller device of the present invention is of particular utility in the formation of ferrotype or glossy prints in which the wet photographic paper 11 comprising a base 11a and an emulsion coating 11b is pressed, emulsion side down, against the smooth surface of the plate.

In carrying out the present invention the roller device 10 comprises a roller 12 having a relatively hard surface. In the illustrated form of the invention the roller is formed of a hard rubber mounted on a shaft 13 passing axially therethrough and having its ends rotatably supported by a frame 14 to which is secured a handle 15 whereby the roller can be readily manipulated.

In accordance with the present invention the roller device is provided with a contacting member 16 which is adapted to be carried by the frame and is urged into engagement with the roller at a point not less than front the point of contact of the roller with the plate. The contactor may be carried in a bail 17 pivotally mounted in depending position on the frame, as shown in Figs. 1 to 3 wherein it is urged toward the roller by gravity or any other suitable means, or may be carried in projecting arms 18 forming extensions of the frame 16 to be slidably urged toward the roller by spring means 19 as shown in Fig. 4. It will be seen, therefore, from Fig. 3 that the paper 11 to be applied tothe plate is first extended between the roller and the contactor with the emulsion side facing the contactor and the end disposed between the roller 12 and the plate 20. This, as shown in Fig. 3, will put a reverse bend in the paper which tends to prestretch the emulsion and prevent curling of the dry print when it is removed from the plate.

In the preferred form of the invention the contactor is made of absorbent material. As shown in Figs. 1 to 3 this comprises a bar 16a of felt mounted in channel 17a of the bail so as to have a projecting surface to engage the paper, while in the form of the invention shown in Fig. 4 the contacting member comprises a roll 16b of porous rubber rotatably mounted in sliding blocks 18:: carried by the extensions 18. In either case the com [actor presents a soft surface which will not mar the emulsion on the paper. To prevent the contactor from removing the moisture from the paper which is essential to produce fine glossy prints, the roll or bar is saturated with moisture and the surface becomes moisture repellent so that as the wet paper passes thereover there will not be any tendency to remove the moisture from the paper.

vln using the novel rolling device of the present invention a new and improved method of making ferrotype or glossy prints is provided. The wet paper 11 is first mounted in position on the roller device so as to extend between the contactor and roller with the emulsion side facing the contactor and the end of the paper disposed between the plate and roller, as shown in Fig. 3. As the roller is moved along in the direction of the arrow A, the paper is given a reverse bend and the emulsion stretched and the emulsion side is pressed progressively into contact with the smooth surface of the plate. It will be seen that as the roller moves it will squeeze out from between the plate and paper any air which could be entrapped between the paper and plate. thus producing an intimate engagement and contact between the paper and the plate throughout the whole area thereof. When the print is dried, it will be found to have less tendency to curl than heretofore, due to the prestretching of the emulsion and will have a smooth, glossy surface throughout.

Variations and modifications may be made within the scope of the claims and portions of the improvcmtns may be used without others,

I claim:

1. A roller device for use in applying wet photographic paper in making ferrotype prints from a plate comprising a roller, a frame rotatably mounting the roller. a handle on the frame for moving the frame and pressing the roller against the plate to move the roller over the plate and apply a paper to the plate, and a paper contacting member adapted to engage the paper at a point not less than 90 from the point of contact of the roller with the plate to press the paper against the roller with a reverse bend around the roller, said contacting member having a paper engaging surface capable of retaining moisture, said surface being saturated whereby moisture is not removed from the paper as the paper moves thereover.

2. A roller device for use in applying wet photographic paper in making ferrotype prints comprising a roller, a frame rotatably mounting the roller, a handle on the frame for moving the frame and manipulating the roller. and a paper contacting member carried by the frame and yieldingly urged into engagement with the paper at a point not less than 90 from the point of contact of the roller with the plate to hold the paper against the roller to provide a reverse bend in the paper, said contacting member having a moisture-retaining surface whereby moisture is not removed from the paper as the paper moves thereby.

3. A roller device for use in applying wet photographic paper in making ferrotype prints comprising a roller, a frame rotatably mounting the roller, a handle on the frame for moving the frame and manipulating the roller, and a paper contacting member adapted to engage the paper at a point not less than 90 from the point of contact of the roller with the plate to hold the paper in a reverse bend therearound, said contacting member comprising a roller of porous material having a moistureretaining surface whereby moisture is not removed from the paper as the paper moves thereby.

4. A roller device for use in applying wet photographic paper in making ferrotype prints comprising a roller, a frame rotatably mounting the roller, a handle on the frame for moving the frame and manipulating the roller, and a paper contacting member adapted to engage the paper at a point not less than 90 from the point of con tact of the roller with the plate to hold the paper in a reverse bend therearound, said contacting member comprising a bar of absorbent material having a moisture retaining surface whereby moisture is not removed from the paper as the paper moves thereby.

References Cited in the file of this patent UNITED STATES PATENTS