Folding-machine.

Application filed, July 3j 1906· Serial No. 268,234·

To all whom it may concern:

Be it known, that I, Samuel G. Goss,,a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, 5 have invented certain new and useful Improvements in Folding-Machines, of which the following is a specification, reference being had to the accompanying drawings.

• My invention relates particularly to imio provements in the former or V-shaped internal guide over which a web of paper is folded longitudinally on the run with the cooperation of a pair of folding-rollers at its apex; and the object is to prevent the smutting or 15 offsetting of the print upon the paper as it passes over the former.

To that end my invention, generally described, consists in forming the sides of this V-shaped former or internal guide of a pair 20 of converging rollers, preferably spindleshaped, journaled at their upper ends in suitable bearings and at their lower ends in suitable bearings a short distance above the lower end or apex of the former and so placed 25 that the outer sides of these rollers form, with the point or apex of the former, the sides of the complete V-shaped internal guide over which the paper is folded by means «of the usual folding-rollers below the apex of ,50 the former. These rollers are rotated very slowly in comparison with the surface speed of the paper and are supplied at a suitable part of their surface away from the part contacted by the paper with a sufficient supply 35 of oil to prevent the smutting or offsetting of the ink on^-the surface of the webs next to the former as the webs pass over them.

In the drawings, Figure 1 is a front elevation of a former with part of the plate broken 40 away. Fig. 2 is an enlarged side elevation of the devices shown in Fig. 1. Fig. 3 is an enlarged detail, being a view of the lower portion of the former with the plate broken away to show the way in which the rollers 45 forming the side edges of the former are journaled at their lower ends; and Fig. 4 is a detail, being a section on line 4 4 of Fig. 1.

Referring to the drawings, 5 6 indicate portions of the folder-frame.

7 indicates a shaft upon which is mounted a roller 8. The shaft 7 is journaled in the usual manner in the folder-frame and is driven in the usual manner. In Fig. 2 gears

10 are shown as indicating driving mechanism for the shaft 7. . 55 indicates a V-shaped internal guide or former, which is supported in the usual manner from the folder-frame 6 by adjustable connections 12 13. The former 11 is provided with top plates 14 -14 and with a fold- 6c marking point 15 at the lower end.

1616 indicate converging rollers, preferably of spindle shape—that is, tapering toward their lower ends—which are journaled near their upper ends in supports 1717, secured to 65 the former 11, and at their lower ends are j ourffaled, as is best shown in detail Fig. 3, in suitable bearings just above the point 15 of the former. These rollers 16 are so located and shaped that they form, with the sides of the 70 fold-marking point 15, the outside edges of the V-shaped former, over which the paper travels in being folded longitudinally on the run. The shape of the former, therefore, as will be seen, with these rollers forming the outer 75 edges of the internal guide· or support over which the paper runs, is substantially the same as the well-known V-shaped internal guide or former.

indicates the usual fold-laying rollers be- 80 tween which the paper is folded and which cooperate with the former 11 to give the paper its longitudinal fold in the usual manner.

indicates castings, which are supported upon the folder-frame 6 behind the former 11. 85 indicates worm-gears which are secured upon the upper ends of the rollers 16.

indicates worm-gears which are mounted upon stop-shafts 22 and which engage the worm-gears 20. The stop-shafts 22 are jour- 90 naled in suitable bearings 23, which are supported upon the castings 19.

(see Fig. 2) indicates worm-gears which are secured upon the inner end of the stopshaft 22. 95 (see Fig. 1) indicates worm-gears which are secured to shafts 26 and which mesh with the worm-gears 24.. The shafts 26 are journaled in suitable supports in the castings 19 and carry near their outer ends pulleys 27. 100 indicates pulleys which are mounted upon the shaft 7 and are connected by belts 29 with the pulleys 27.

As will be obvious from the above description, when the shaft 7 is driven in the run- 105 nine the P^ress “ the usual way through . 836,761 the pulleys 27 2§, belts 29, and worm-gears 25, ΛΛ, ai-------------- -- ----- __ slowly rotated.

The plates 14 of the former are provided 5 with hinged plates 14% which·, as best seen in Fig. 1, are hinged at their inside edges by hinges 30 to the plates 14, so that they may beturned up to exposes the absorbent material below, hereinafter described. It will of 10 course be understood that the hinges 30 are sunk in the plates, so that the whole surface of the plates 14 and 14^a may be flush and , smooth to permit the paper to run over the ' former in the usual manner.

Referring particularly to the detail in Fig. 4, 31 indicates a box open at its outer edge, which is placed underneath the surface of the former 1 land upon each side thereof. These boxes, as is shown in dotted lines in Fig. 1, converge from the upper part of the former toward the bottom ana are covered over the top by the hinged plates 14^a.

indicates absorbent material adapted to become saturated with any suitable oil and located in the boxes 31. The absorbent material 32 is preferably formed of a strip of heavy felt Shaped to fit the boxes 31 and projecting beyond the outer edges of- the boxes 31, so as to 'bear upon the inside surface of the rollers 1*6, as is best shown in Fig. 4, as may also be seen particularly by the broken-away portion in Fig. 1. The absorbent material 32 being saturated with any suitable oil or similar material, it will be obvious that as the rollers 16 slowly revolve their surface will be given a slight coating of oil, which is too small to in any way injure the paper as it passes over the former on the run, but which will prevent any smutting or offsetting of the ink while the paper is being folded.

. The. absorbent material may be supplied with oil in any suitable way—such, for instance, as by pipes 33 S3, which lead from any suitable source of supply (not shown) ana open at their inner ends to the absorbent material 32 near the 'top.

Any suitable oil may be used, such as a paraffimoil or a mixture of paraffin-oil and macine-ofl or a suitable mixture of kerosene and machine-oil.

Any suitable material operating in the same manner as an “ oil,” stnctly so called, to prevent the smutting or offsetting of the ink may of course be used. I therefore do not confine myself to the use of, “oil,” strictly so called, but use the term for convenience as <a generic one indicating either an oil or any similar substance having a like effect in preventing the smutting or offsetting of the ink. As the rotation of the'toilets 16 is very slow, they may be rotated in either direction.

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5o pulleys 27 2§, belts 29, and worm-gears That t 24, 21, and 20 the rollers 10 win be desire to