US699866A

US699866A - Sheet-delivery apparatus for printing-machines.

Info

Publication number: US699866A
Application number: US8309401A
Authority: US
Inventors: Charles P Cottrell
Original assignee: Individual
Current assignee: CB Cottrell and Sons Co
Priority date: 1901-11-21
Filing date: 1901-11-21
Publication date: 1902-05-13
Anticipated expiration: 1919-05-13

Description

No. 699,866. Patented May l3, I902.

C. P. COTTRELL.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

(Application filed Nov. 21, 1901.) (No Model.) 3 Sheets-8heet I.

Zigeawewgw m: NORRIS PETERS co. PNOTO-LITHO.. WASHINGTON, a. c.

Patented May l3, I9 02 C. P. CDTTRELL.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

(Application filed Nov. 21, 1901.)

3 Sheets-8heot 2.

(No Model.)

Patented May I3, I902.

'06P. COTTRELL.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES;

(Application filed Nov. 21, 1901.)

3 Sheets-Sheet 3.

(No Model.)

Wz'Znasu'ewwnsumcyon o c UNITED STATES PATENT OFFICE.

CHARLES P. COTTRELL, OF IVESTERLY, RHODE ISLAND, ASSIGNOR TOO. B. OOTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

SHEET-DELIVERY APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 699,866, dated. May 13, 1902.

Application filed November 21, 1901. Serial No. 83,094. (No model.)

To all whom it may concern:

Be it known that I, CHARLES P. COTTRELL, a citizen of the United States, and a resident of Westerly, in the county of Washington and State of Rhode Island, have invented a new and useful Improvement in Sheet- Delivery Apparatus for Printing-Machines, of which the following is a specification.

A sheet-delivery apparatus embodying my invention comprises a sheet-carriage, which has a to-and-fro motion between the impression-cylinder and a receiving-table and which contains an endless-tape carrier for receiving the sheets from the cylinder. The said carriage remains stationary in its rearward position near the cylinder while the tapes run forward with the sheet. The carriage then runs forward to a position over the receivingtable While the running of the tapes is suszo pended, and as the carriage returns toward the cylinder the tapes again run forward within it to discharge the sheet upon the table.

My said invention consists in certain combinations hereinafter described and claimed,

2 5 in which such carriage and tapes constitute elements.

In the accompanying drawings, Figure 1 represents a side elevation of as much of a printing-machine as is necessary to illustrate my invention; Fig. 2, a plan of the same; Fig. 2*, a vertical sectional view parallel with Fig. 1 of the mechanism for moving the endless tape carrier within the carriage; Fig. 3, a transverse vertical section in the line 3 3 of Fig. 1 as viewed from the left of that figure. Figs. 4 and 5 are views, on a larger scale, of details which will be hereinafter explained.

A is the side framing of the machine; B, the impression-cylinder; O, the table for receiv- 0 ing the sheets from the delivery apparatus,

said table being stationary at a suitable distance in front of the cylinder. On the tops of the cylinder journal-boxes D are brackets E, which support the rod or shaft a, carrying the cylinder-stripping fingers d and in which are the bearings for the shafts b o of the regular delivery-pulleys b o. The shaft 1) derives constant rotary motion in the usual way from the gear 0 on the cylinder through a gear 1), which turns on a stud 13, carried by one of the brackets E, the said gear 1) gearing both with the said gear 0 and with agear b on said shaft b.

c fg g designate the carriage, consisting of four corner-pieces e, two side bars f, secured to said corner-pieces, and two transverse shafts g g, turning in bearings in said cornerpieces. The said corner-pieces are fitted to slide on two stationaryguide-bars it, supported one on each side of the machine, partly in brackets 11, affixed to the side framing A, and partly in bracketsj on the stands E, which are erected on the side framing. In the example represented I have adopted for these standsE the ordinary so-called fly-brackets used for a fly-delivery. The transverse shafts g g of the carriage are fnr nished with pulleys 9* 9", on which run an endless carrier consisting of tapes 70, which also run under pulleys Z on the shaft Z, which turns in a bearing on the stands E. Above the tapes 7a are corresponding tapes k to confine the sheets to the said tapes It, running on pulleys 6, the shafts 7 of which run in bearings in the corner-pieces e of the carriage, 7 5 the rear one of said shafts being geared by gears 8 9 with the rear shaft g of the lower tapes 70. These tapes 7t are omitted from Fig.

2, but shown in Fig. 3. They are, however, immaterial to my invention.

The lower tape-shaft g is furnished with friction gear-wheels g for driving the tapes 7c in the manner which will now be described.

On the shaft or rod a of the stripping-fingers are loosely fitted two friction gear-wheels m, which derive constant rotary motion from two friction driving-wheels n, fast on the shaft 1) of the regular delivery-pulleys b. When the carriage e f g g is in its rearmost position, in which its tapes'are to receive the sheets from the cylinder, the friction gear-wheels g on the tape-shat t g are in contact with the constantly-rotating friction gear-wheels m and the tapes run in a direction to carry the sheets forward in the carriage; but this movement ceases as soon as the carriage itself commences to move forward. The to -and-fro movement of the carriage isprod need through v toothed racks f on the lower edges of its side bars f by pinions r, engaging with said racks, one of said pinions being loose on a fixed arbor s, secured in one of the stands E, and the other turning loose on a short rock-shaft 3', arranged in line with s and fitted to turn in a bearing .9 in the opposite stand E. Independent rotary motion is given to the pinions r in the following manner through gears t on a transverse shaft 25', which turns in hearings in the stands E, the said shaft t receiving motion through a gear t fast upon it, from a gear a on the rock-shaft s. The rock-shaft gets its motion by mechanism substantially like that commonly employed for actuating the fly-shaft of a fly-delivery, consisting of a toothed sector Q; on the rock-shaft and a rackbar to gearing with said sector and actuated by a cam w on the shaft S, through levers a: y and a rod ,2, the said cam being so formed that the carriage is held stationary in its rearmost position nearest the cylinder long enough for the sheets to be taken into it by the tape carrier.

For the purpose of discharging the sheets from the carriage after the latter has been run forward to a position over the delivery-table the forward part of one of the stationary guidebars has its lower edge toothed to form a rack 10, with which engages a pinion 10* on the tape-shaft g. The details of this rack and pinion and their engagements are clearly shown in Figs. 4 and 5, of which Fig. 4 is a side view of said details and Fig. 5 a transverse section in the line 5 5 of Fig. 4. The said pinion 10* is fitted to turn on the shaft 9, but carries a pawl 11 for engagement with a ratchet-wheel 12, which is fast on said shaft, the engagement only taking place when the pinion is turned in the direction of the arrow shown on it in Fig. has it is by running along the rack while the carriage is run backward. As the carriage runs backward toward the cylinder the tapes running forward therein toward the delivery-table at the same speed carry the sheet forward therefrom, leaving it free to fall upon said table.

The operations of the several parts of this delivery apparatus having been thus described, a few words will suffice to explain their consecutive operations, which are as follows: The carriage having been run backward to its position nearest the cylinder and the wheels g on the shaft g of the endlesstape carrier having come in contact with the constantly-running wheels m just as the heads of the sheets from the cylinder are presented to the said carrier by the regular deliverypulleys b c, the said carrier runs forward within, but independently of, the carriage, while the latter remains stationary until the sheet is fully received on the carrier. The carriage then runs forward and the carrier with it, the independent operation of the latter being suspended until the carriage returns toward the cylinder, when the tapes running forward in the carriage by the operation of the pinion 10* and rack 10 carry the sheet out from the carriage, leaving it free to drop to the delivery-table.

It may be here stated that the arbor s and the rock-shaft 5 may be considered as two sections of the same shaft, which is interrupted to permit the passage of the tapes lo, connection between the gears r of the two sections being made by the supplemental shaft t and its gears 25 F.

It is obvious that instead of the frictiongearing n m g for driving the tapes finelytoothed gearing might be employed, though the friction-gearing is preferable, for the reason that the friction-gear 9 will come into engagement'with that 111 without the clash that might result with toothed gearing.

Vhat I claim as my invention is 1. In a printing-machine, the combination with an impression-cylinder and a deliverytable, of a carriage between said cylinder and table, an endless carrier in said carriage, delivery-pulleys between said cylinder and carriage, means for giving said carriage a to-andfro movement between said cylinder and ta ble, and means for giving said carrier two forward movements within said carriage, one while the latter is stationary at the end of its movement toward the cylinder and the other while it is moving backward toward the cylinder, substantially as herein described.

2. In a printing-machine, the combination with an impression-cylinder and a deliverytable, of a carriage between said cylinder and table, delivery-pulleys between said cylinder and carriage, an endless carrier in said carriage, means for giving said carriage both a forward movement toward said table while said carrier remains in fixed position within it, and a return movement, and means for giving said carrier two forward movements within said carriage, one while the latter is stationary at the end of said return movement and the other during said return movement, substantially as herein described.

3. The combination with the impressioncylinder and a delivery-table arranged in front thereof in a printing-machine, of a carriage and stationary guides therefor and means for giving the said carriage a to-andfro movement between said cylinder and table, a carrier comprising endless tapes and carrying shafts and pulleys therefor in said carriage, driving-wheels and means for transmitting constant rotary motion thereto from the cylinder, and wheels on one of said shafts for transmitting motion to said carrier from the said driving-wheels for the purpose of conveying printed sheets into said carriage, substantially as herein described.

4:. In a printing-machine, the combination with the impression-cylinder and deliverypulleys in front thereof, of a delivery-table arranged in front of said delivery-pulleys, a carriage and stationary guides therefor and means for giving said carriage a forward movement from said delivery-pulleys toward the table and a return movement and for holding it stationary between said movements, a carrier comprising endless tapes and carrying shafts and pulleys therefor in said carriage, means for giving said carrier a forward movement in the carriage while the latter is so held stationary, a stationary toothed rack and a pinion on and having a ratchetand-pawl engagement with one of said shafts and gearing with said rack for giving said carrier a movement toward the table for discharging the sheets from the carriage during said return movement, substantially as herein described.

5. The combination with the impressioncylinder and a delivery-table arranged in front thereof in a printing-machine, of a carriage and stationary guides therefor and means for giving the said carriage a to-andfro movement between said cylinder and table, a carrier comprising endless tapes and carrying shafts and pnlleys therefor in said carriage, driving-wheels and means for transriage while the latter returns toward the cylinder, substantially as herein described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 19th day of November, A. D. 1901.

CHARLES P. COTTRELL.

Witnesses:

A. R. STILLMAN, THEODORE Downs.