US1266742A - Apparatus for delivering folded sheets. - Google Patents

Description

H. A. W. WOOD.

APPARATUS FOR DELIVERING FOLDED SHEETS. APPLICATION FILED JUNE 16. l9l3. RENEWED DEC. I0. I917.

m t A an ll l u HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, T0

WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORA- TION or vrnernra.

APPATUS FOR DELIVERING FOLDED SHEETS.

Lfitififide.

Application filed June 16, 1913, Serial No. 773,918.

To all whom it may concern:

Be it known that I, HENRY A. Wrsn WOOD, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Apparatus for Delivering Folded Sheets, of which the following is a specification.

This invention relates to the delivery of folded sheets from the folding mechanism of a web printing press.

The principal object of the invention is to provide for delivering the sheets by an apparatus, by which the uniform delivery of the sheets without buckling or crumpling will be assured, and by which the speed of delivery can be materially increased.

For the purpose of securing this result the paper as it comes from the folding rolls is given a curve at the end of such. a nature that longitudinal buckling is prevented and that when the front end strikes the fan blade it" will be capable of springing or yielding to prevent both longitudinal and lateral buckling of the front end.

Reference is t be had to the accompanying drawings, in which- Figure 1 is an elevation of a fan delivery constructed in accordance with this invention; and i Fig. 2 is a similar view showing the parts in other positions.

So far as I am aware, folded sheets are delivered in pairs at the present time'from. rotary folders in a straight form. Therefore, the straight bundle of sheets striking the fan blade have a tendency to buckle between the fans during delivery, and the higher the speed the greater the difliculty.

This invention is made for the purpose of securing a more uniform delivered product and especially to provide for doing it at a high rate of speed so that the speed of the folder can be materially increased.

The invention is shown as arranged for taking folded bundles of sheets from a pair of folding rolls 1(). Instead of the usual straight paper guide a guide 11 is mounted on a stationary support 12 and provided with an upper concave curvature at'll, and a lower convex curvature 11 on the operative side, thus being of an ogee or S shape. The usual rotary fan 2? having curved blades 13 is provided. his is located in Specification of Letters Patent.

Renewed December 10, 1917. SerialNo. 206,544.

such position thatas the blades swing over into place for receiving the advance end of the bundle of sheets they cross the line of the guide at a point near that at which the curvature changes from concave to convex. The usual stop 14 is provided mounted on a support 15 on the frame and the'papers are delivered to delivery belts 16 or the like.

The method of delivery carried out by this apparatus is as follows :-The folded sheets coming down through the rolls 10 at an inclination with the folded end forward strike the concave surface 11. Thus they are given a downward curve at the end uniform all theway across the bundle. As the bundle of sheets drops down the guide 11 this end curvatureis maintained until the end of the bundle of sheets strikes a fan blade. The formation of this curvature is indicated in the position A of Fig. 1 while the next result of it is indicated in position B in Fig. 2. Tn this latter position the curved bundle of sheets is just passing from the concave to'the convex portionof the The curvature of the sheets at the guide. end is maintained until the sheets strike the fan blade 13 which then just comes into proper position to receive the sheets. The result at this point is important. With the bundle of sheets arranged in a plane, the

sudden striking of the end thereof against the fan blade would have a tendency to buckle the sheets longitudinally at a point near the advance end, and ordinarily there is no way of controlling this. But on. account of the preliminary curve which has been given the bundle of sheets and which is maintained, as described herein, this curved end is unsupported at both edges when it strikes the fan blade. This causes the fan blade immediately to turn this advanced end reversely all the Way across as indicated by the arrow in Fig. 2. dinal crumpling is eliminatedand all the bundles of sheets are affected in the same way and a uniform product is secured. It is to be understood, of course, that the fan blades rotate more slowly than the speed of the bundle of sheets down the guide, as is usually the case. Thus the speed of the sheets is retarded by the fan blade at the same time that the curvature is changed. By this method also it will be seen that the blades of the fan take the bundle of sheets Patented May at, am;

Tn this Way longitualong the convex surface of the guide throughout the remainder of the travel thereof vwith the blades. Two other positions of the bundle are shown at C and D in Figs. 1 and 2 respectively. At the bottom the bundles strike the stops in the usual way and the sheets are deposited on the de-- The method of delivering livery belts. herein set forth is not claimed in this patent as it has been made the subject of my divisional application filed December 3, 1917 on a method of delivering folded sheets,

Serial No. 205,136.

Although I have illustrated and described only one application of the invention, I am aware of the fact that many modifications can be made therein by any person skilled in theart without departing from the scope of the invention as expressed in the claims.

Therefo're, I do not wish to be limited in these respects, but what I do claim is 1. In an apparatus for delivering folded sheets, the combination of a pair of-folding 7 rolls and curving them, and a convex-curve delivered and effective to curve said sheets below the same and continuous therewith, a rotary fan having blades movable forwardly along the convex curve for receiving the ends of the sheets and keeping them in contact with said convex-curve, and a stationary stop located at the bottom of said guide for receiving the ends of the sheets as they are dropped from the blades, the-blades being located to withdraw past the guide before the sheets engage the stop. 1

3. In an apparatus for delivering folded sheets, the combination of a pair of folding rolls, a curved paper guide having a concave surface facing the edges of the sheets thus and a convex curve, and a rotary fan in positlon to receive the ends of the sheets from the concave part of said curved guide and reverse their curvatures along said concave curve to prevent their buckling or crumpling.

4. In an apparatus for delivering folded sheets, the combination of a pair of folding rolls effective to deliver folded sheets, a curved paper guide having a concave surface facing the edges of the sheets thus delivered and effective to curve said sheets, and a rotary fan in position to receive the ends of the sheets from said curved guide while in the curved shape caused thereby and reverse their curvature to prevent their buckling or crumpling.

5. In a sheet folding and delivering mechanism, a pair of folding rolls and a rotary sheet laying fan, in combination with means for causing the sheet to assume an S-shaped curve during itstransmission from the folding rolls to the point of delivery.

6. In a sheet folding and delivering mechanism, a pair of folding rolls and a rotary sheet laying fan, in combination with means for so maintaining the curvature of the sheet at all points between the folding rolls and the point of delivery to the fan that the moving sheet will resist the tendency to buckle in the direction of its line of travel.

7 In a sheet delivery apparatus, the combination with a concave guide adapted to receive the advancing end of a sheet and curve the same into a concave form, of a rotary fan located in position to receive the advance end while maintained in such concave form and immediately reverse its curvature.

8. In a sheet delivery, the combination with a guide adapted to receive the forward end of an advancing sheet and bend it into curved form at the end, the curve being uniform across the sheet, of a rotary fan located in position to receive said end while so curved and prevent its assuming a flat shape.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

HENRY A. WISE W'OOD.

\Vitnesses:

B. M. STOELER, LILLIAN C. JONES.

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