US1116495A - Rotary folding mechanism. - Google Patents

Description

L. A; SCHMIDT;

ROTARY FOLDING MECHANISM.

APPLICATION FILED MAR- 20, 1909.

.wimsssss INVENTQR;

UNITED srarns arana @FFICE.

toms A. SCHMIDT, or NEWYORK, N. Y.,

ASSIGNOB, BY MESNE ASSIGNMENTS, TO

HOE AND 00., OF NEW YORK, N. Y., A CORPOIQATION OF NEW YORK ROTARY FOLDING MECHAbTISM.

T0 all whom it may concern:

Be it known that I, Lou s A. SCHMIDT, a citizen of theUnited States, residing at New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Rotary Folding- Mecha-nisms, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to certain improvements in rotary folding mechanisms.

In the operation of modern rotary printing machines, especially those intended for newspaper work. where a large product and consequent rapidity of operation is required, it has been found that the speed of the printing mechanism, practically considered, is determinedby the speed of the folding apparatus. In the ap lication of William Spalckhaver, Serial o. 472,393,

' filed Jan. 15, 1909, there is disclosed a fold ing friction and heat.

ing mechanism comprising a cylinder having two rotary folding blades mounted therein, these blades being carried on shafts. On these shafts are mounted gears which mesh with the teeth of an internally toothed ring, so that as the cylinder rotates, the folding blades rotate, the gearing being so proportioned as to cause each folder blade to fold off at the same point in the rotation of the cylinder. Folding mechanism of this character has a high efiiciency as to the number of papers produced per hour. It has been found in practice, however, when the folding cylinder is running at the speed necessary to developits high etliciency, say three hundred revolutions or more per minute, that the centrifugal force develhped tends to cause the folding blade carrying shafts to bind in their bearings, thus produc- Further, since the shafts cannot, of course, fit their bearings with a driving fit, there is opportunity for a slight play of the shafts with respect-to the bearings which interferesto some ex tent with the smoothness of operation desirable when mechanism is to run at thehigh speeds-required. It will be understood that in these mechanisms the folding blade carrying shafts usually make three revolutions to one of the cylinder, so that these shafts maygnake from nine hundred irevolu tions-a minute up, a'ccordi'ngto the; speed of; the cylinder. Further, itistohviousgihatfi Specification cf Lettcz-s Patent.

Application filed March 20, 1909.

purpose by providing it wlt-h lhe usual cut- I yPatented Nov. 10, 1914. Serial No. 484,783.

with any Wear in the bearings, the opportunity for play is considerably increased.

It is the object of this invention to produce a rotary folding mechanism employing a rotary carrier havin a'pluralityof folding blade carrying siafts and blades in .Which means shall be provided for controlling the elfect on the folding blade shafts of the centrifugal force developed in the revolution of the carrier, thus overcoming the tendency of the shafts to bind in their bearings and preventplay and wear.

With this and other objects not specifically referred .to in view, the invention consists in certain constructions and in certain parts, improvements and combinations as will be hereinafter fully described and then specifically pointed out.

In the accompanying drawings-Figure 1 illustrates in end e vation a folder mecha- IllSlll constructed in accordance with the in vention. Fig. 2 is a side elevation, partly in section, of one end of the folder mechanism illustrated in Fig. l.

Referring to the drawings, 1 indicates a rotary carrier mounted on a shaft 2, this shaft being supported in bearings 2' mounted in the frame at. The carrier will be pro vided with a plurality of sheet receiving surfaces. In the construction shown, the carrier has two s'ucli.- su i"faces, 5, 6. Means will usually be prei ided for hoging the sheets to be folded on the surfa es, these means, in the particular consti uction shown, comprising pins 7 8 which nitty be mounted and operated in the manner usual in such constructions. If desired, the carriermay be formed as one of a pair of cutting cylinders, the carrier illustrated being adapted forthis ting woods 9.

Constructions embodying the invention will include a plurality of rotary; folding blades. In the particular construction illustrated, these blades are indica ed at '10, the M20 blades being shown as IIIO'llIll'BU on. shafts 11. While the bearings for these traits may be variously supported, they will, in the best constructions, be mounted in thc. ;cylinder heads, the bearings illustrated beingmarked 10 12. The folder blade car 'ying ShaftsWilL-in constructions embodyin the invention, .be

caused to rotate aroun' --their own; xss as the carrier rotates. 5' :In the best constructions embodying the imfifiiltlflll, this rotation cf'the 1:1

.- folder blade carrying shafts will be veflected by gearing. In the construction illustrated, each of the shafts 11 is provided at one end with a. hub 13, this hub being made fast to the shaft in any suitable manner, as, for instance, by means of a set screw 14. To the flange of each hub 13 is secured a ring gear 15, the attachment being effected in any suitable manner, as by screws 16. These gears 15 are in mesh with an internally toothed ring gear 16 secured to the frame in any suitable manner, as, for instance, by brackets and screws, one of which is indicated at 17 Constructions embodying the invention will include means for controlling the ef feet on the folding blade shafts of the centrifugal force developed by the rotati n of the cylinder. While these means may be varied, in the particular construction illustrated, there is'secured to the end of each shaft 11 a circular bearer 18, the diameter of this bearer being equal to the pitch circle of the gear 15. These bearers, in the construction illustrated, run on a circular track, the diameter of the circle inclosed, by thistrack being enual to the pitch circle of the internal gear 16. This track may be mounted in an'yisuitablc manner. in the particular construction ilhstrated, this track, marked 19, is mounted in a recess in the gear-'16, the parts being secured together in any suitable manner, as, for instance,'by uniting them with a driving fit. The proportions ofthe gearing will be such as to cause the folding blades to fold off at the same point, and in the particular construction illustrated, these blades tuck off between a pair of interg'eared folding rolls 20, these rolls being driven in the usual manner from a gear 21 on the cylinder.

WVith the construction as described, it will be understood that the bearers cooperating with the circular track will firmly hold the shafts against the centrifugal force developed in the rotation of the cylinder 1 and will overcome any tendency of the shafts to bind in their bearings. Further, since the pitch circles of the bearers and track correspond with the pitch c rcles of the gearing, 4

a rolling contact between the bearers and the track is assured, and at the same time the shafts are securely held against-any play and wear in the bearings is prevented, the construction thus conducing to that smoothness in operation which is desirable in high speed mechanism.

Changes and variations may be made in the construction by which the invention is carried into eficct. The invention is not, therefore, to be confined to the particular construction hereinbefore shown and described. r w i What is claimed is 1. The combination with a rotary carrier having a plurality" of sheet receiving surfaces, of a plurality of folding blades,

shafts of the centrifugal force developed in the rapid rotation of the carrier throughout the entire revolution of the carrier, whereby the shafts are prevented from binding in, I

their bearings.

2. The combination with a rotary carrier having a plurality of sheet receiving surfaces, of a plurality of folding blades, continuously rotating shafts on which the blades are mounted, bearings for the shafts, and means for controlling the effect on the shafts of the centrifugal force developed in the rapid rotation of the carrier, whereby the shafts are prevented from binding in their bearings.

3. The combination with a rotary carrier having a plurality of sheet receiving surfaces, of a plurality of folding blades, shafts on which, the blades are mounted, bearings for the shafts, and means for holding the shafts against the centrifugal force developed by the rapid rotation of the'carrier throughout the entire revolution of the carrier.

4. The combination with a rotary carrier having a plurality of sheet receiving surfaces, of a plurality of folding blades, continuously rotating shafts on which said blades are mounted, bearings for the shafts,

and means for holding the shafts againstthe centrifugal force developed by the rapid rotation of the carrier.

5. The combination with a rotary carrier having a plurality of sheet receiving surfaces, of a plurality of folding blades, shafts on which said blades are mounted, gears on the shafts, an internally toothed ring with which said gears are in mesh, bearing for the shafts, and means for holding the shafts against centrifugal force developed by the rapid rotation of the carrier.

6. The combination .with a rotary carrier having a plurality of sheet receiving surfaces, of a' plurality of folding blades, shafts on which the blades are mounted, bearings for the shafts located in the carrier head, an internally toothed ring lo.-

cated alongside the carrier, gears on the v shafts in mesh with the ring, and cooperating means carried on the shafts and ring for.

holding the shafts against the centrifugal force developed by the rapid rotation of the carrier.

7. The combination with a rotary sheet carrier having a plurality of sheet receiving surfaces, of a plurality of folding blades,

ring, a circular bearer for each shaft the closed by said track corresponding to the diameter of the pitch circle of the internally toothed ring.

8. In 'arotary golden, a folding cylinder, a rotary tucker blade journaled therein, an internal gear beside one end of the cylinder, a gear on the tucker blade shaft meshing with the internal gear,-and bearers' beside the said gears for keeping them in pitchline mes 1 9.111 a rotary folder, a folding cylinder,

a rotary tucker blade journaled. therein, an,

internal gear beside one end of the cylinder, a gear on the tuckerblade shaft meshing with said internal gear, an annular bearer beside and at the pitch line of the annular gear, and a circular bearer beside and at the pitch line of the tucker blade gear, engaging the annular bearer for the purpose specified.

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

LOUIS A. SCHMIDT.

Witnesses: V

F. W. H. CRANE, Gno. V. WILLIAMSON,

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