US994675A

US994675A - Sheet-delivery mechanism for printing-presses.

Info

Publication number: US994675A
Application number: US56087110A
Authority: US
Inventors: Carl Henderson
Original assignee: Individual
Current assignee: Miehle Printing Press and Manufacturing Co
Priority date: 1910-05-12
Filing date: 1910-05-12
Publication date: 1911-06-06
Anticipated expiration: 1928-06-06

Description

'0. HENDERSON. SHEET DELIVERY MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED MAY 12, 1910. 994,675, Patented June 6, 1911.

3 SHEETS-SHEET 1.

G. HENDERSON.

SHEET DELIVERY MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED MAY 12, 1910.

Patented June 6, 1911.

3 SHEETS-SHEET 2.

L WY gm W UWMF niml 0. HENDERSON.

SHEET DELIVERY MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED MAY 12, 1910. 994,675 Patented June 6, 1911.

8 BHBETSSHBET 3.

.. CARL HENDERSON, 01? OAK PARK, ILLINOIS, AssIGNo 'ro MIEHLEI,1?R;IC1YIINGI RESS AND MANUFACTURING COMPANY, or CHICAGO, ILLINOIS, aflco'aro m'rron F encebeing had to the accompanying draw ILLINOIS.

srrnnrnntrvnar MECHANISM r03 rnmtrme-ranssss f" seams. I

of Illinois, have invented certain new anduseful Improvements in Sheet-Delivery Mechanism for Printing-Presses; and I hereby declare that the following is a full, clear, and exact description thereof, referings", which form part of this specification. Tl11S invention is an improvement in applications serially numbered 073,428,0ctober 18, 1910) and filed March 18, 1910,;Serial No. 550,230 (Patent No. 974,062, October 25, 1910).

The object of the present invention is to enable the sheets to be delivered by mechanism of this kind at the desired point, without the necessity of employing any sheet stops, and also to enable endless carriers or tapesto be dispensed with, if desired.

be driven at variable speed-so as to receive a sheet from the press, or sheet forwarding The invention embodies novel means whereby the sheet forwarding devices may devices, at the speed at which the sheet is f" leased thereby it will drop in ti'onup on the receiving table.

" advancing, and carry'the sheet to thepoint otdischarge, and'in the interim maybe slowed down so that when the sheet is re- The invention also embodies novel means forfforwardingthe sheets without the use of endless" carriers.

' In said drawings-Figure "anism, of'the kind shown in my app w 1 vention and illustrating the novel sheet fortions aforesaid, embodying the present in- 'warding-devices and means for operating "same with variable or changeable speed. "Fig. 2 IS an inside face view of the-sheet carrying devicesshown in Fig. 1. Fig. 3 is a' detail section on line 33-43, Fig. 1, looking infthe direction of the arrows. Fig. 4 is a detail plan view of Fig. 1, and showing the onlin'e- 5'5-,Fig. 4. Fig. 6 is a detail secplan view of a complete delivery apparatus embodying the invention.

In its general construction and mode of operation in carrying a sheet to the drop- Specification of letters Patent. v

proper posibar 2' are mounted-a similar serieso coact in forwarding sheets of Application filed May 12, 1910. Serial No. 560,871. I I I i 1 ping point the present delivery mechaiii shi more nearly resembles the mechanism shown in my application filed March 18, 1910 above referred to,and a complete delivery mechanism embodies two opposite sets of laterally adjustable devices slidably mounted upon transverse supports on'the framework of the machine, at the delivery end thereof, as described in my aforesaid application.

on said frameis a vertically movable bar 1 which may be connected therewith by means ,of linksl, one of said links being attached to a rock-shaft 1 to which is also attached an arm 1, the lower end of which is adapted to engage a cam 4* on a cross shaft 4; and at the proper time, cause barl" to raise or lower vertically.

Mounted upon the. frame 3, so asto be moyable laterally thereof, is a second bar 2 which lies parallel with bar 1' and normally lies directly. thereunder. This bar- 2 may be withdrawn outwardly from beneath bar 1 by means of. bell-crank arms 2 pivoted upon the frame 3 and enga ing pins 2* on the underside of bar 2, said 'bell-cranks being connected by a bar 2 ;-on one of said adapted to operate substantially as describedinmy application: (filed .Mar. 18,

- 1910) aforesaid, SerialNo. 550,230. 1 is a detail elevation of part of a sheet delivery mech- 'Upon the bar 1 are mounted a series of rotatable rollers 1 which project slightly below the plane 'of the bar; and upon the rollers '2 with which therollers 1 are. adapted to paper. One or both-sets of these rollers should be driven; .and the meansfor driving, said rollers at variable speed is one feature of the 'invention.;;'.They may be driven in different' ways; I haveonlyshown means for U driving the lower set of: rollers 2 and as shown the rollers 2 are mounted. upon short-shafts 2*?-journaled in the bar, 2 and having onltheir rear ,orouterends small pinions 2 which are adapted to mesh with larger pinions 8" on a shaft 8 journaled in bearings or brackets 8 attached to bar 2; said shaft 8 being driven by means of a gear 8 meshing with a gear 8 slidably this sleeve 8 as shown in Fig. 6. By this construction the

gears

8 and 8, and

pinions

2 and 8 will always be kept inmesh in all positions of bar 2 and frame 3.

- When shaft 8 is rotated all the rollers 2 will be positively driven, and if the rollers 1 arelowered into contact therewith it is obvious that if the margin of a sheet of paper is introduced between the first pair of roll ers 2 1 it will be forwarded by such pair of rollers to the next pair. As all the rollers 2 are. driven at the same peripheral speed, no tapes need be used to forward the sheets from one pair of rollers to the next;

but if desired

guards

1 and 2 may be arranged between the. pairs of rollers, as shown in Figs. 1 and 2 to prevent the forward edge of a sheet being improperly displaced in passing'from one pair of rollers to the. next; the lower guards '2 can be attached to and movable with bar 2", and the upper sets of guards 1 can be attached to and movable with bar 1; said guards however are so arranged that-they cannot bite the sheet.

The shaft 8? may be driven by any suitable means so as'to cause the

rollers

2, 1 to forward sheets at the speed at which they are received from the press tapes. I prefer to drive the rollers at a varying speed, so that when a sheet of paper is first entered between the

rollers

2, 1, it will be moved on by the rollers at the same speed at which it was brought from the press; but the speed of the rollers and sheet will be slowed down as the sheet nears the point of dropping so that as or when the sheet reaches the point of dropping and the rollers are separated the sheet can drop freely onto the receiving table. By reason of this slowing, or even stopping, of the rollers at the time of dropping the sheet, sheet arresting devices,

or tail stops, such'as described in my afore-.

said applications may be dispensed with.

One means of driving the shaft 8 at variable speed so as to operate rollers 1 2F in the manner described, is indicated conventionally in the drawings as a variable friction drive. As shown shaft" 8 has a friction disk 8 on its outer end, opposite an axially alined disk 7 g mounted on a stubshaft 7? in a bracket 7 attached to the main frame, and intermediate the disks 7 8 is 'an intermediate friction gear 7 rotatably mounted upon a slide bar 7 supported and guided in openings in the bracket 7 and the outer end of this bar 7 has apin 0r roller 7 engaging a'raoe-cam 7 on a shaft 7 mountedon the frame, said cam 7 being adapted to shift the friction gear 7? transversely of the friction disks 827 parted to the shaft 8*; but by shifting it outward from such center, motion can be imparted to shaft 8 at any desired speed up to the maximum of disk 7 The friction drive may be of anysuitable kind; but the parts should be so proportioned and adjusted as to cause motionto-be transmitted to the shaft 8* in such time and manner, that the rollers 2 will be rotating peripherally at the speed at which the sheet is received from the press, at the time said rollers receive the sheet, and will afterward be slowed. down, or stopped, at the time the sheet is to be dropped ;-'at which time cam P operates to lift bar 1 and separate rollers 1 from rollers 2, and at substantially the same moment cam 4 operates to move bar Q outward and thereby withdraw the rollem 2 and guards 2 from beneath the margins of thesheet, which can then freely drop onto the table below, as described in my aforesaid applications.

It will be understoodthat in the complete delivery there are two frames 3, and sets of rollers arranged at opposite sides of the path of the sheet, as it issues from the press, and that the outer margins of the sheet are engaged and held by and between the opposite sets of rollers, which grasp its outer margins and carry it to the point of deposit; and at that point the rollers are separated and the lower rollers retracted from beneath the margins of the sheet to permit it to drop. It will be observed that in this invention I can dispense with any tapes for carrying the sheet, such as described inmy aforesaid applications.

be continuously driven at the same speed,

and used with a tail stop, and I therefore do not wish to wholly restrict the present invention to means for variably driving these rollers, as I consider itincludesthe use of positively driven rollers for forwarding a sheet to the point of deposit as well invention what I I beneath the slowed "sheet to permit it to drop. v

2. In a'sheet delivery apparatus for printing presses, the combination of opposite adjustable supports, a vertically movable set' of rollers thereon, an opposed horizontally movable set of rollers thereon, means for positively driving the latter rollers, means for varying the speed of the "driven rollers so as to slow down the sheet at the point of delivery, and means for withdrawing the lower set of rollers from beneath the slowed sheet to permitit to drop. I

3. In a sheet delivery apparatus, the combination of-opposite sets of sheet engaging ,devicesadapted to' graspv the side margins ofa'sheet andtransfer same to the drop-' Ipoint; with means for similarly varying t e speed of the said devices so as to cause them to gradually slow down the. sheet before it reaches the point of dropping, and means for separating the devices torelease the sheet at the dropping point.

4. In a sheet delivery apparatus, the combination of opposite sheet engaging devices 'adapted to grasp the side margins of a sheet, means for driving said devices to cause them to forward the sheet edgewise, means for similarly varying the speed of said devices-so as to gradually slow down thesheet after it is taken by, said devicesand before it reaches the point of dropping, aild means for separating said devices to drop the sheet at the roper point.

5. In a sheet elivery apparatus for print-' 59 ing presses, the combination of opposite sets ,of co-acting rollerseach set adapted to engage the side margins of a sheetibetween' them and forward same edgewise, means for positively driving {some of the rollers in i '55 each set to forward an sheet, means for varyingthe speed of the rollers to slo'w the sheet, and'means for causing the sets of rollers to simultaneouslyrelease the sheet where it is vto be dropped.

. 6. In a sheet delivery apparatus for printing presses, the combination of a plurality of opposite pairs of. rollers adapted to engage the side margins of a sheet and forward the same edgewise, means for positively driving some oft-he rollers to cause them to forward the sheet, means for varying'the speed of the rollers to slow the sheet,

and means for separating the rollers to re-' lease the sheet at the point of same.

7. In a'sheet delivery apparatusfor print,- ing presses, the combination of opposite sets of sheet forwarding devices each comdropping respectivelyadaptedto grasp the opposite side margins of a sheet between them and forward the same edgewise; means for driving one roller in'every pair in each set positively to cause them toforward the sheet, and means for simultaneously separating the rollers in the several pairs to release the sheet at the dropping point.

posed of a plurality of pairs of rollers,'and

8. In a sheet delivery apparatus rorprint- I ing presses, the combination of opposite sets of sheet forwarding devices each composed of a plurality of pairs of rollers adapted to grasp the side margins of a sheet between them and forward the same edgewise;

means for positively driving the lower rollers in each pair, and means for retracting the lower rollers to drop the sheet at the desired point.

9. In a sheet delivery apparatus for print- H ing presses, the combination of a pair of adjustable supports, a set of rollers on each support, an opposed horizontally movable set of rollers mounted on each support;

means for positively driving all the rollers in'one set ,on each support, and means for withdrawing the lower sets of rollers from. beneath the sheet to permit it to drop.

10. Ina sheet delivery apparatus for printing presses, the combination of opposite ad ustable supports, a vertically movable-set of rollers on each support, an opposed horizontally movable set of' rollers on each support; means for positively driving all the rollers in one set on each support, and means for withdrawing the lower sets of rollers from beneath the sheet to permit it to drop.-

11. In a sheet delivery apparatus, the com-- bination of opposite sets of pairs of rollers adapted to engage the margins of a sheet to forward same, and means for positively driving some of the rollers in each set to forward the sheet edgew'ise; with devices intermediate'adjacent pairs of rollers for directing sheets from one pair ofrollers -to the next, and. means for separating the rollers in each pair to release the sheet where it is to be dropped.- Y

12. In a sheet delivery apparatus for printing presses, the combination of opposite sets of pairs of rollers adapted to engage the side margins of a sheet, means for positively driving-one of the rollers in each pair to cause them to forward the sheetedgewise; stationary devices between adjacent pairs of rollers for directing sheets from one pair of rollers to the next, and

means for separating the rollers in each pair site sets of pairs of rollers adapted to enrality of opposite sets of pairs ping point,

gage the opposite side margins of a sheet; means for positively driving one roller in each pair in order to forward the sheet edgewise, means for varying the speed of the rollers so as to slow down the sheet before it reaches the point of dropping, and means for causing the rollers to release the sheet at the dropping point.

lt. In a sheet delivery apparatus for printing presses, the combination of a pluof rollers adapted to engage the side margins of a sheet, means for positively driving some of the rollers to cause them to forward a sheet edgewise; means for varying the speed of the rollers so as to slow down the sheet after it is received and before it reaches the dropand means for separating the rollers to drop the slowed sheet.

15. In a sheet delivery apparatus for of a sheet between them; means for driving one roller in each' pair. positively, means for slowing down the driven rollers to retard the sheet at the point of dropping, and means for separating the rollers to release the retarded sheet. v

16. In a sheet delivery apparatus for printing presses, the combination of opposite sets of upper and lower rollers adapted to grasp the side margins of a sheet between them and forward it edgewise; means for driving the lower rollers in each series positively; means for varying the speed of the driven rollers so as to slow the sheet as it reaches the dropping point, and means for separating the rollers to release the slowed sheet at the dropping point.

In testimony that I claim the foregoing as my own, -I aflix my signature in presence of two witnesses;

CARL HENDERSON. Witnesses:

E. F. CO PTON, THOMAS C. Hnwrmn Copies of this patent may be obtained for five cents each,'by addressing the Commissionerof Patents,

Washington, I). C.