US700239A - Pneumatic sheet-carrying device. - Google Patents

Description

Patented May 2o, |902.

No. 70u39.

GQF, READ. PNEUMATIC SHEET CARRYING DEVICE.

(Application filed July 29, 1901.1

3 Sheets-Sheet (No Model.)

"Patented may 20, |902.l

G. F. nEAn. Y PNEUMATIC SHE'ET CARRYING DEVICE.

(Application ledJuly 29, 1901.)

3 Sheets-Sheet 2.

(No Model.)

J'zvenr" Weg.,

fue Nolhe PETERS co. pHoro-mwa., wAsHlNc-wn. u. c,

' No. 700,239. Patented May 20, |902. v G. F. HEAD.

PNEUMATIC SHEET CARRYING DEVICE.

(Application 1ed` July 29, 1901.)

v (No Model.) 3 Sheets-Sheet 3.

' UNITED STATES' 'PATENT E'ErcE.

GEORGE F. READ, OENE'w- YORK, N.- Y., AssIGNOE To ROBERT HOE, OE

NEW YORK, N. f Y.

CARRYING DEVICE.

SPECIFICATION-forming part of Letters Patent No. 700,239, dated May 20, 1902.

Applicants fue@ my 29, 1on1.

u ing specication andthe accompanying draw' ings, forming a part of the same. Y

This invention relates to certain improvements in pneumatic sheet-carrying devices for use in printing and other analogous ma` chines.` p I Heretofore the'pneumatic sheet-carrying devices of printing-machines as usually constructed'have consisted of-a cylinder provided" with air-channels, which underlie perforated sections in the p eriphery ofthe cylinder, said air-channels communicating by suitable pipes with the shaft of thecylinder,which was perforated or madehollow. This perforated shaftA was connected witha suction-producing mechanism, thecoinrn'unication between the suc-` tion mechanism Vand the air-channels' being usually controlled 'bymeans of valves, the entire"construction'being com plicated and requiring special mechanism for operating the valves.

One of the objects of thepresent'invention is to produce a simple and cheap pneumatic perforated shaft is unnecessary.

.A further object of theinven-tion is produce a pneumatic sheet-carrier in which thevalves Aheretofore cmployedand the mechanisml for' Operating them are rendered unnecessary.

A further objectof the inventionis'to pro-l` duce an improved pneu matic sheet-carrier from which' the sheet is delivered with cer-y tainty and' accuracyat the delivery-point. Y -I' With'these andother objects inviewthe invention` consistsV in',V certain constructions" f and in certain parts, improvements, andcorn- A scribed andl then specifically pointed out in the claims hereunto appended.

' In` the accompanying drawings, in rwhich s ,like charactersof reference indicatethe same The suction devices on the srum No.' 70,077. on', modus vdetail front elevation, partly in section, ofthe sheet-carrying cylinder on an enlarged scale. Fig. 3 isan venlarged sectional end view of they sheet-carrier and certain of the, mechanism cooperating therewith, the plane of section being-indicated by the line 3 3 in Fig. 2. Fig. 4 is' a sectional view on the line 4 4 of Fig. 2.

Referring to the drawings, which illustrate one embodiment of the invention, l-indicates the frame of the machine, which may be of' anysuitable construction. Mounted'in'suitable bearings in the frame are cutting-cylinders cand 3,the cylinder 2 being provided with i l the usual cuttingblades 4 and the cylinder Sbeing provided with the coperating cutting-blocks 5. In the construction shown the cylinder 3 is provided with suction sheet-holdf ing devices, so that it may carry the sheets p l n 7.o cylinder may onward after they are cut. 4

be. variednwidely in construction. As shown, however, the cylinder is provided'witha plurality of suction-channels V6, vwhich -may be integral with the cylinder, as shown, or may be separate therefrom and securedthereto in any suitable manner. The outer-walls of these channels are in the construction shown formed by the cutting-blocks, said blocks being provided withI suitable perforations 7,

throughwhich 'the suction acts. v Inthe preferred form of the construction 'these channels 6 will-be "located near the periphery of wiselocated,if desired.' l

The means by which vsuction is created in or casting 8, which Amaybe mounted or sup'-v 'ported in any suitable manner. This casting be other- Y 4the channels 6 may-bevaried Within wide `limits. VAs shown, vthere is provided a head is provided with a-hub 9, through .which the J shaftl-'Obf thecylinder passes loosely, so that the head is supported by the shafhs'lhe head l8 is stationary with respect-tothe -shaft f2 u. 951-.. ofv any suitable construction-fare 'preferaloly"r e provided'for insuring thatthe head will -beg i 'f f held stationary.. As, shown, the bearing of v` and the cylinder, and` meansy which tmay be the shaft 10 is provided with'ears 11, through which pass screws 12,`sai`d screws entering` the head and `lockingit against movement.

The head 8 is provided with-janf airchaml V may be varied within wide limits.

ber, which may be of any suitable configuration. As shown, this airchamber, which is marked 13, is circular in form, its outer wall being formed bya fiange 14, which forms the periphery of the head, and its inner wall being formed by a flange 15, which projects inwardly from the head. This air-chamberlies along the line of movement of the channels G, and these channels are therefore in open communication with the chamber as the cylinder rotates.

The air maybe exhausted from the chamber 13 in any desired manner. As shown, however, the chamber is provided with a suitable opening which communicates with a pipe 16, leading to any suitable form of suctionproducing device-as, for instance, a fan, the casing of which is indicated at 17 in Fig. 1. As shown, the fan is driven by means of a belt 18 and pulley 19, said belt running over another pulley 20, mounted on a shaft 21, which is driven from any suitable source of power. The suction-producing fan operates continuously to draw the air from the chamber 13. Inasmuch as the suction-channels v6 are in open communication with the chamber, except as hereinafter specified, it will be seen that in the rotation of the cylinder as soon as one of the cutting-blocks 5 comes in contact with a web of paper the Web will be clamped against the block by the force of the suction and will be held against the cylinder until the suction is cut off by means now to be described. i

The means by which the suction is cut off from the channels in order to release the sheet Preferably, however, these means will be carried by the head, before referred to, and will be adj ustable with relation to it, so that the suction may be cut off at any desired point. When, as in the preferred form of the construction, the air-chamber is circular in configuration, the means for cutting off the suction from the channels will preferably consist of an arc-shaped block 22, which is located in the chamber, said block corresponding in size to the cross-sectional area of the chamber, so that it entirely fills it. As the cylinder rotates, therefore, it will be `seen that as the mouth of each channel 6 comes opposite the block the suction will be cut off from the channel and will remain cut off until the mouth of the channel has passed the block. The block 22 is preferably made adj ustable,so that the suction may be cut off at any desired point inthe rotation of the cylinder, the means by which the adjustment is effected being ofany desired construction. As shown, the head is provided with a slot 23, `and the block 22 carries a pin 24, (see Fig. 2 and dotted lines in Fig. 3,) the head of this pin being provided with a suitable nut 25. By loosening the nut the block may be adjusted to any desired position in the channel within the limits of the length of the slot. The block is preferably so located in the head that it will operate to cut off the suction from the channels just before the channels reach the sheetdelivery point, so that the sheets may be dropped easily into the sheet-receiver and without being thrown against the side of the receiver with undue force. The position of the block may therefore be varied according to the speed at which the carrier is run and according to the weight of the paper.

Any suitable form of sheet-receiving device may be employed. As shown, the sheet-receiver consists of a table 26, mounted 011 a bracket 27, secured to a suitable slide 23, which moves in vertical guides 29. The slide 28 is connected by means of a cable 30 t0 a balance-spring 31, so that the weight of the sheets deposited on the receiver may causo it to Amove downward. This receiver is a wellknown one, and any other suitable form of receiver may be substituted therefor.

In order to insure the positive separation of the forward end of the sheet from the cylinder after the suction has been cut off, a suitable stripper is preferably provided. This stripper may be of any suitable construction. As shown, the shaft 32 is provided suitably mounted in the frame of the machine, said shaft being provided with stripper-fingers 33, which enter grooves 34 in the cylinder, the stripper being so located as to catch the forward edge of the sheet as soon as the suction is cut off.

It has been found by practical experience that when the carrier is run at a high rate of speed the sheets are apt to adhere to the surface of the cylinder, even though a stripper be employed. To prevent the sheets from adhering to the cylinder, suitable means are or may be provided which act upon the sheet between its ends and force it from the cylinder. is slotted, as indicated at 35, between each of the suction-channels. Through these slots work fingers 36, which are carried on shafts 37, suitably mounted in ears 3S on the interior of the cylinder. Each of the shafts 37 is provided with an arm 39, which carries a bowl 40, arranged to contact with a stationary cam 41, connected to the hub 9 of the head 8. The cam is so located as to rock the shaft to throw out the fingers at about the time when the stripper catches the forward edge of the sheet. The fingers 36 may be returned to their position within the cylinder in any desired manner. As shown, each of the shafts 37 is provided with an arm 42, which is connected to an ordinary spring-rod 43.

The web is indicated at W, and after pass ing over two guide-rolls 44 and 45, a guide 46, and between slitters 47 all of which parts may be of any usual construction) it passes under a roll 43, which is mounted in suitable arms 49, pivoted at 50 in the frame of the machine, and is forced against the periphery of the cylinder by a spring-rod 5l. ting-blocks 5 successively pass beneath the roll 4S the web is forced against it by this In the construction shown the cylinder.

TOO

IOS

IIO

As the cutl and the rolls on which they run is therefore;

roll,and as the mouth ofthe suction-channel beneath eachblockhas .passed off the cntting-off block 22 atthis time the suction is operating and acts to clamp'lthe web firmly to the block Ars the cutter 3 continues its rotation one of the blades 4 comes .into action and cuts a sheet from the web, the sheet being carried onward by the carrier. In order to hold the sheet snugly against the carrier, suitable tapes 52-are provided. These tapes are mounted in any usual manner, and a description of the means by which they are mounted regarded as unnecessary. j The operation of the machine will tion, and a detailed description thereof is therefore unnecessary.

While -the invention as shown is embodied.

in a sheet-carrier which forms one of a' pair of cutting-cylinders, itis to be understood that it may be applied to cylindrical sheetcarriers other thancuttng-cylinders and to 4 before-described, as it may be embodied in other-forms of construction.

sheet-carriers which are not cylindrical in form anddo not, therefore, move in a circular path. Theinvention is not, therefore, to be-limited to the specific construction herein- -What is claimed is- 1. The combination with a moving sheetcarrier provided with a suction-channel, of a stationary part located along the line of movement-of .the carrier and having an air-chamber with which-the channel communicates,

andY adjustablemeansfor interrupting the,

communication between the channel and the chambensubstantially as described.

- v2. .The combination `with a moving sheetcarrier provided with a suction-channel, of a stationarypart located along the line of movement of the carrier and having anair-'chamber-with which the suction-channel communi-` cates, and a block located in thechamber for interrupting the communication between the channel and the chamber, substantially as de-v` n icationbetweenV the chamberand lthe channel, substantially as described.

f 5. The-combination with a rotatingy sheet-Vy carrying, cylinder provided with a suction-r channel, -of a stationary part having an 'airbe read-l ilyunderstood from the foregoing descrip.

chamberwith which the channel is incommunication as the cylinder rotatesyand an adj ustable block inthe chamber for interrupting the communication between the chamber and the channel, substantially as described.

6.v The combinationfwith a rotating sheetcarrying cylinder provided with a suctionchannel, of a stationary part having a circular air-chamber with'which the channel is`r in communication as the cylinder rotates,`andl j means located in the chamber for interrupting the communication between the channel and the chamber, substantially asdescribed. '7. The combination with a rotating sheetcarrying cylinder provided with a suctionv l channel, of a stationary part having a circular air-chamber with' which the channel is in communication as the cylinder rotates, and adjustable means located in the chamber for interrupting the communication between the lchannel and the chamber, substantially asdescribed. V

8. The combination with a rotating cylinder provided with a suction-channel, of a stationary head having an 'air-chamber with which the channel is in communication, and adjustable meanscarried by the head for interrupting the communication" between the channel and the air-chamber,y substantially as de-L scribed.

9. The combination with a rotating cylinder provided with a suction-channel, of a stationary head having a circular air-chamber with which the channel communicates, and means' carried by the head for interrupting the com' roo` muni'cation between the channel and theair-l Y chamber, substantially asdescribed. y v

10. The combination with a rotating cylinder providedwith asuction-chann'el, 'otg'a-sta-.

tionary headV yhaving a circular air-chamber*V with which the channel communicates,jan`d j adjustable means'carried'bythe head for in-` terrupting'the communication between the channeland the air-chamber,"substantially as' described; i

1l. Tliecmbiuationwith'a rotatingcylinder .provided'witha suction-channel, of al's'tawith whiclthe channel'communicates,and.'f i means 'carried bythe headandlocatejdinth'e 1 ,f

tionar'y head' havingv acircular air-chamber chamber for interruptingtle',communication betweenth channel and the air-cham'ber,sub i Y 'j :.v f nel 12. The combinationwith arotatingcy'lin-Q` p denprovided with a 'suction-channel,.`of 'asta-L tion'ary head -havinga` circularair-jchambe,

withwhich'the channel 'communicates,'andf` stantially,sts-described.` v*

adjustable means carriedby the, head 'andlocatediinlthe chamber for'in'terruptingthev communication between the channel'andfthe rair-cheminer, substantially asdescribed.-

, i13.1'Ifhe' combination w'ithla'rotatingl cylinder lprovided witha suctionfchannel, of a sta-f 1tio`na'ry :head haviuga eircularfair-chamber f -with`which fthe. channel 'commu'niate's',v and l an adj ustablefblock carriedb'y the head"and locatedinth'e chamber'for interrupting-.the

communication between the channel and the air-chamber, substantially as described.

14. The combination with a rotating cylinder having a suction-channel, of a stationary part having an air-chamber with which the channel communicates, means for interrupting the communication between the channel and chamber, and means for throwing the sheet o the cylinder when communication between the channel and the chamber has been interrupted, substantially as described.

15. The combination with a rotating cylinder having a suction-channel, of a stationary part having an air-chamber with which the channel communicates, means for interrupting the communication between the channel and chamber, and a stripper for removing the forward edge of the sheet from the cylinder when communication between the channel and the chamber has been interrupted, substantially as described.

16. The combination with a rotating cylinder having a suction-channel, of a stationary part having an air-chamber with which the channel communicates, means for interrupting the communication between the channel and chamber, and means acting upon the sheet between its ends to throw it od the cylinder when communication between the channel and the chamber has been interrupted, substantially as described.

17. The combination with a rotating cylinder having a suction-channel, of a stationary part having an air-chamber with which the channel communicates, means for interrupting the communication between the channel and chamber, and means acting upon the forward edge of the sheet land means acting upon the sheet between its ends to remove it from the cylinder when communication between the channel and the chamber has been interrupted, substantially as described.

18. The combination with a rotating cylinder having a plurality of suction-channels near its periphery, of a stationary head having an air-chamber therein with which the channels communicate, means for interrupting the communication between the channels and the air-chamber, arms carried by the cylinder' and arranged to operate upon the sheet when communication between the air-chamber and suction-channels is interrupted, and a stationary cam for throwing the arms into operation, substantially as described.

19. The combination with a rotating cylinder having a suction-channel therein, of a stationary cylinder-head having an air-chamber with which the channel communicates,a block mounted in the head and arranged to close the suction-channel, and an adjusting and locking pin extending through the slot and serving to position the block, substantially as described.

20. The combination with a rotating cylinder having a plurality of suction-channels arranged near its periphery, of a head hav-ing a circular air-chamber with which the channels communicate, and an arc-shaped block located in the chamber and serving to close the channels successively as they pass it, substantially as described.

21. The combination with a rotating cylinder having a plurality of suctionchannels arranged near its periphery, of a head having a circular air-chamber with which the channels communicataan arcshaped block located in the chamber and serving to close the channels successively as they pass it, and means for adjusting the block, substantially as described.

22. The combination with a rotating cylinder having a plurality of suction -channels arranged near its periphery, of a head having a circular air-chamber with which the channels communicate, an arc-shaped block located in the chamber and serving to close the channels successively as they pass it, and a pin-and-slot connection for adjusting the block and locking it in position, substantially as described.

23. The combination with a pair of cuttingcylinders, one of said cylinders having a plurality of suction-channels,of a stationary head provided with an air-chamber with which the channels communicate, means for interrupting the communication between the chamber and the channels, a sheet-receiver, a stripper acting upon the forward edge of the sheet, and pivoted delivery-arms, said arms and stripper operating to deliver the sheet to the sheet-receiver, substantially as described.

24. VThe combination with a pair of cuttingcylinders, one of which is provided with a plurality of suction-channels, of a stationary head having an air-chamber with which the channels communicate, an adjustable block located in said chamber and serving to interrupt the communication between the chamber and the channels, a sheet receiver, a stripper acting upon the forward edge of the sheet, and pivoted 'delivery-arms, said arms and stripper operating to deliver the sheet to the sheet-receiver, substantially as described.

25. The combination with a pair of cuttingcylinders, one of which is provided with a plurality of suction-channels, of a stationary head having a circular airchamber with which the channels communicate, means for interrupting the communication between the chamber and the channels, a sheet-receiver, a stripper acting upon the for'ward edge of the sheet, and pivoted delivery-arms, said arms and stripper operating to deliver the sheet to the sheet-receiver, substantially as described.

26. The combination with a pair of cuttingcylinders, one of which is provided with a plurality of suction-channels, of a stationary head having a circular air chamber with which the channels communicate, adjustable means for interrupting the communication between the chamber andA the channels, a sheet-receiver, a stripper acting upon the forward edge of the sheet, and pivoted delivery- IOC) IIO

arms, said arms and stripper operating to deliver the sheet to the sheet-receiver, substantially as described.

27. The combination with a pair of cutting- -cylinders, one of which is provided with a plurality of suction-channels, of a stationary head having a circular airchamber with which the channels communicate, an adjustable block for interrupting the communication'between the chamber and the channels, a sheet-receiver, a stripper acting upon the forward edge of the sheet, and pivoted delivery-armsysaid arms and stripper operating to deliver. the sheet to the sheet-receiver, substantially as described.

28. The combination with a pair of cuttingcylinders, one of which is provided with a

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