Patent GB-191408836-A (GB)
Title: Improvements in Sheet Delivering Mechanism, particularly for use with Folding Machines and the like.
IPC: B65H43/00
Filed: 1914-04-07
Granted: 1915-01-07
Abstract: 8836. Marks, E. C. R., [Cleveland Folding Machine Co.]. - April 7. Delivery apparatus. - An apparatus for delivering and stacking sheets from folding, printing, or like machines, or other source, is constructed so as to deal with sheets, signatures, &c. of different classes without separate adjustment for each class, by controlling the action of the stacking or receiving mechanism by the passage of the sheets &c. themselves, which are made to actuate a movable member, such as a roller, which governs the controlling-mechanism. The driving-machine for the folding and stacking mechanism may be thrown out of action by an electric switch which is automatically opened if the pressing member of the stacking- mechanism becomes jammed. As shown applied to a folding-machine driven through gearing which also drives the lower roll 1 of a pair of rolls 1, 2, Figs. 3 and 11, which deliver the sheets from the folding-machine, the upper roll 2 of this pair is mounted in a pivoted arm 2<1> which controls the action of the stacking- mechanism. This stacking-mechanism comprises a series of pressers 20' carried by an oscillating shaft 20, a series of curved holding-down or gripping-devices 21 on an oscillating shaft 18, and an inclined receiving-band 28 provided on the underside with bars 28<1> which pass over an intermittently-operated roller 26. A wedgeshaped block of wood 41 is placed on the band 28 to maintain the sheets that are first received on the band in a substantially horizontal position, which position is maintained as they are stacked one against another, by an overlying shoe 32, adjustably carried by a pivoted arm 32<1> carried by an upright 31. The shoe is provided with an extension 32<11>, which serves as a guide for the sheet. The sheets are finally received on a table 30', Fig. 12, terminating' in an upwardly curved surface 30 from which the stacked sheets are readily removed by hand. The stacking-mechanism is controlled from the roller 2 and arm 2<1> as follows. The arm 2' is connected by a link 2" to an escapement device 4 mounted in a yielding manner on a shaft 15<1>. As the roller 2 is raised on the entrance of a sheet, the lower arm 4<1> of the escapement releases an abutment 10 on a cam shaft 5, and this shaft rotates through about 30 degrees under the action of a friction clutch 9, Fig. 10, connected by gear-wheels 6<11>, 6<1>, 6 to a gearwheel on the roll 1. The clutch 9 is driven by a pin 8<1> on a sleeve 8 integral with a gear-wheel 7<1> in mesh with a second gear on the shaft 14 of gear 6". The clutch is formed of two rectangular blocks with semicylindrical recesses faced with leather bushings and connected together by screws and springs, and normally the clutch tends to rotate the shaft 5 so as to bring a mutilated gear-wheel on it into positive engagement with a ratchet gear on one end of shaft 14, this end being mounted on a spring- pressed arm. This engagement takes place after the upper arm 4<11> of the escapement 4, which engages an upper abutment on shaft 5 after the shaft 5 has moved through 30 degrees as explained above, has been raised by the complete passage of the sheet through the rolls 1, 2, and the shaft 5 then rotates through the remaining 150 degrees until the lower arm of the escapement engages the lower abutment 10. This movement of the shaft 5 and of the cams 11, 12 mounted thereon oscillates the shafts 18, 19, and the shaft 19 transfers its movements by means of a lever 19<1> and link 19" to the shaft 20, on which the pressing-members 20<1> are mounted. The shaft 18 first retracts the grippers 21, and then actuates a clutch member through a lever 22 having a pin-andslot connexion with a spring-controlled bar 23 adjustable by means of a screw. This clutch member engages a flange on the roller 26 of the delivery belt, and a spring-pressed clutch member prevents backward movement of this roller. The link 19<11> is pivoted to a lug 33, Fig. 13, on a sleeve 33* loosely mounted on the shaft 20, and the lug 33<1> normally acts on a spring 33<11> to depress the fingers 20<1> against the action of a second spring, which normally keeps the fingers raised. The controlling-switch for the folding and delivery mechanism is mounted on the shaft 20 and comprises a base 35 integral with shaft 20, and a blade 36 pivoted to an extension of the sleeve 33*. The blade 36 is normally gripped between the contacts 35<1> on base 35, and is acted on by a spring 36' which tends to open it. If for any reason the pressing-devices 20' cannot be depressed to their normal operative position, the spring 33<11> is flexed, and the blade 36 is withdrawn sufficiently from its contacts 35<1> to enable the spring 36' to open the switch and cut off the current. The sheets or folded papers &c. may be supplied to the rollers 1, 2 from a folding- machine as described above, or from any machine or delivery, or even by hand.