US269184A - oeowell - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1.

L.. G. OROWELL.

SHEET DELIVERY APPARATUS.

No. 269,184. Patented Dec. '19, 18821.

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L. 0. GROWELL.

SHEET DELIVERY APPARATUS.

(No Model.)

No. 269,184. Patented Dec. 19, L882.

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(No Model.) 4 SheetsSh eet 3. L. O. GROWELL.

SHEET DELIVERY APPARATUSf No. 269,184. Patented De0.19,1882.

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No. 269,184. 7Patented De0.19,1882.

Irwe 117E073 ltd/Ear G OrowclQ UNITED STATES PATENT @FFICE.

LUTHER o. CROWELL, o BRooKLYN, 'AssIeNoE TO n. HOE & 00., or NEW YORK, N. Y.

SHEET-DELIVERY APPARATUS.

SPEOIFICATIONforming part of Letters Patent No. 269,184, dated December 19, 1882.

Application filed June 9, 1882. (No model.)

To all whom it may concern:

Be it known that I, LUTHER U. GROWELL, a citizen of the United States, residing in the city of Brooklyn, county of Kings, and State of New York, have invented certain new and useful I inprovements in Sheet-Delivery Apparatus, fully described and represented in the following specification and the accompanying drawings, forming a part .of the same.

It is the object of the present invention to produce a rotary delivery apparatus capable of operating in connection with a web-perfecting printing mechanism to deliver the printed sheets without red ucin g their lengths by transverse folding.

To this end theinvention consists primarily of a revolving sheet-carrier and cooperating devices for arresting the forward movement of the leading end of the sheet and for distend- 2o ing the sheet and retaining itsrear end upon the carrier until it is entirely reversed and stripped therefrom.

The invention also comprehends various details ofconstruction and combinations of parts,

2 all of which will be hereinafter fully explained and pointed out in detail.

In said drawingslFigure 1 is a rear end elevation of a mechanism embodying the present invention. Figs. 2 and 3 are verticalsections c of the same'upon thelines wwand y y, respectively. Figsd and 5 illustrate by vertical section and plan view a modified sheet distending and retaining apparatus. Figs. 6, 7, and S are sectional views, illustrating further modificationsin the same.

The sheet-carrier consists of a drum or cylinder, 1, secured to a shaft, 2, mounted in an appropriate frame and driven from any convenient part of the printing mechanism. This drum, which is of a circumference equal to twice the Iengthof the sheet to be produced, is provided with two sets of sheet-holding pins, 3,1ocated'upon its opposite sides and mounted upon fixed shafts 5, so as to always remain 5 protruded. Just in the rear of the pins 3, and l yin gin the same longitudinal recesses through which the pins protrude, are sets of stripping fingers 7, which are mounted upon rock-shafts 9, located in the rear of the pins and having their free ends extended sufiiciently forward to lie between or straddle the pins, as shown in Fig. 5. The rock-shafts 9 are provided with rock-arms 11, the inner ends of which are controlled by a fixed cam, 13, which is so shaped as to throw the fingers outward to strip the sheets from the pins at the proper time. The shafts 9 are provided with springs, of the ordinary construction, which draw the fingers inward and hold the arms 11 constantly against the cam. Just in advance of the pins 3 the carrier is provided with cutting-grooves 14, which co-operate with a blade, 15, carried by a cylinder, 16, of one-half the size of cylinder- 1 and driven in unison therewith, so that the blade 15 acts with both grooves 14 and severs 6 the web at each one-half revolution of the carrler. y

.In addition to the devices already specified, the carrier 1 is provided with a sheet distending and retaining inechanism,consisting of the bars 17, which extend lengthwise of and rest upon its surface. These bars are supported in four-armed frames 21 22, which are mounted loosely upon the shaft 2 of the carrier, and a sleeve, 23, to be hereinafter referred to, and are so driven that the bars move positively with the carrier, but at only one-half its speed. This movement is imparted to the frames and bars by means of gears 24 25, which are fixed to the inner sides of the frames and engage with gears 26 ,27, fast upon a shaft, 28, jour-. naled in the heads of the carrier, which shaft receives a planetary motion from its gear 29, through engagement with the gear 30, fixed upon the sleeve 23, which surrounds the shaft 2 and is secured to the frame of the machine, as shown in Fig. 1. 7

It is apparent that if the gears 24. 25 30 were of the same size and the gears 26 27 29 also equal to each other, the gears 26 27 would sim- 9o ply travel around the gears 24 25, and the latter and the frames 21 22 and bars 117 would remain stationary; but as the gears 26 27 are only one-half the size of the gears 24 25, it follows that the former in making a complete 5 revolution with the carrier will. only pass over one-half the periphery of the latter, and thatthe latter, together with the frames 21 22, will during such time be carried forward with the carrier one-half a revolution, from which it rc- I05 sults, as before stated, that the bars 17 revolve with the carrier, but at only one-half its speed. The bars 17 are mounted to turn freely in their bearings, so as to roll instead of slide over the surface of the carrier, and said bearings are made movable, as shown in Fig. 2, and are provided with springs (not shown) which operate to constantly draw the bars inward and hold them snugly to the surface of the carrier. In order to avoid contact with the sheet-holding pins, which, as before stated, are constantly protruded, the bars 17 are provided at proper points with circumferential grooves 31, of sufficient depth to allow the pins to pass unobstructed. Just in advance of the cutting grooves and blade the carrier 1 and cylinder 16are provided with longitudinal depressions 32 33 34, into which the bars 17 are drawn so as to permit them to pass the biteof the carrier and cylinder.

Situated below and in close proximity to the carrier is the apparatus for grasping and arresting the forward movement of the leading ends of the sheets to strip them from the car rier. This apparatus consists of a skeleton cylinder, 35, provided with four sets of grippers, 36, which are mounted in the usual manner upon rock-shafts provided with springs, by

which the grippers are closed, and with arms,

'as 37, which are acted upon by a fixed cam or I cams, 38, to open the grippers at the proper time.

The parts beingconstructed as justset fort and provided with suitable gears so as to have their movements properly timed with relation to each other, the operation will be as follows: The web, after being perfected and, if desired, reducedin width by longitudinal folding or by being split, and having its sections associated by web-turners or otherwise, will enter between the carrier 1 and the cylinder16, where its leading end will be impaled by the pins 3, so as to be held upon the carrier. The gearing by which the frames 21 22 aredriven will be so timed that when the leading end of the web is taken by the pins one of the bars 17 will havejust passed the bite of the carrier and cylinder 16, and, as the carrier travels at twice the speed of the bars 17, theleadingend of the web will at once be carried forward past the bar, the spring controlled bearings and grooves 31 of the bar permitting it to rise out of the depression in the carrier and the pins to pass forward unobstructed. When the pins carrying the leadihg end of the web arrive at a point opposite to the cylinder 35 the cam 13 will through arm 11 operate the fingers 7 to strip the end of the web from the pins and throw it outward against said cylinder, where it will be caught by one of the sets of grippers 36, which will at that time be in position to close upon it. As the carrier and the cylinder 35 continue their revolutions from this point, the leading end of the web will be stripped from the carrier and carried slowly downward and backward, while the bar 17, moving forward at one-half the speed of the carrier, will remain continually in or near the bight 4.1 of the web, keeping it distended and preventing it from falling from the carrier faster than is necessary. When the carrier has made one-half a revolution from the point of starting the blade 15, co-operating with groove 14, will sever the web, and the second set of pins 3 will impale the freshly-cut end and carryit forward to be in'like manner stripped from the pins and taken by the second set of grippers 36, which will then have arrived in position to close upon it, the second bar 17 being in proper posit-ion to move forward in its bight to keep it properly distended, and so the operation will be repeated at each one-half revolution of the carrier. When the carrier has made a complete revolution the rear end of the first sheet will have arrived at the position shown in Fig. 3, and will be released from between the carrier and the bar 17, havin g been completely reversed and stripped from the carrier. At or about the same time that its rear end is released from the carrier the grippers 36will be operated to release its leading end, when it will fall flat upon the piling-table or upon traveling tapes or an apron to be conveyed away from the machine.

It will be observed that the cam 1.3 is so shaped that the fingers 7, after throwing the leading end of the web into the bite of the grippers 36, will at oncebewithdrawn a short distance, and will then remain projected beyond the points of the pins until the rear end of i the sheet is released, thereby preventing the possibility of the body of the sheet coming into contact with and being torn by the pin-s.

Although it is believed that the best results will be obtained by making the parts of subtantially the proportions shown, yet it is evident that they may be varied to a considerable extent. The carrier 1 may be of a circumference equal to the length of three or more sheets, and have its auxiliaries proportion ately increased in number, and the number of sets of grippers upon the cylinder 36 may be increased or diminished. The severing of the web into sheets may also be accomplished by a cutting mechanism entirely independent of the carrier.

When the cutting mechanism is independent of the carrier the sheets may be separated by short spaces before coming to the carrier, in which case the fingers 7 may be omitted and the grippers 36 be made to take the ends of the sheets directly from the carrier.

It is also evident that this apparatus, although especially adapted to operate upon sheets which have not been reduced in length by transverse folding, is capable of delivering sheets which have been reduced to any desired dimensions.

In the invention as illustrated in Figs. 1 and 5 the sheet distending and retaining bars and their frames are omitted, the sheet being kept properly distended while being stripped from the carrier by jets of air which enter its advancing bight. The apparatus for this purpose consists of a series of nozzles,39, connected IIS through a pipe, 40, with a fan or other blower, and projecting inward and forward from the side of the carrier, so that as soon as theleading end of the web is caught by the grippers 36, it will be subjected to an air-blast which will keep it properly distended and advance its bight 41. The nozzles 39 will be arranged in a progressive series, as shown, so that the air-pressure will not be diminished as the bight advances. It will usually be advantageous to arrange a series of these nozzles upon each side of the carrier, although but one series is shown in the present case.

In Fig. 6'the air-nozzle 39, instead of being located at the side or sides of the carrier, are placed just in the rear of the, skeleton cylinder 35, so that the jets of air enter the bight of the sheet directly from the rear instead of laterally. Fig. 7 shows a moving air-blast apparatus for the same purpose. In this case the bars 17, instead of rolling freely upon the surface of the carrier, are made rigid with the arms of the frames 21 22 and move out of contact with the carrier. These bars are hollow, and are provided upon their front sides with openings for the emission of jets of air, said air being forced into said hollowbars through openings in the hub 42 and arms of, the frame 22. By this arrangement the air-blast apparatus advances with the bight of the paper,

and the jets of air are delivered in close proximity thereto, so that a much smaller amount of air suffices than when the jets are delivered at a greater distance from the paper.

By the arrangement shown in Fig. 8 the paper is held to the carrier and kept distended by suction instead of bypressnre from the exterior. For this purpose the shell of the carrier is provided with narrow' air-chambers {13, which open outward through a large number of small perforations, 44, and communicateinwardthrough the'pipes 4.5 and an axial opening in the shaft 2 with an exhaust apparatus. By the suction thus produced the sheet will be held to the carrier until rolled backward and stripped ofi' by the action of the grippers 36.

Vhat I claim is 1. The combination, with a rotating sheetcar'rier, of devicesforarresting the forward movement of and retaining the leading end of the sheet until the same is reversed and stripped from the carrier, all substantially as described.

2. The combination, with a rotating sheet-V carrier, of devices for arresting the forward movement of and retaining the leading end of the sheet and. for keeping the sheet distended until reversed and stripped from the carrier,

all substantially as described.

'3. The combination, with the rotating sheetcarrier, of the slowly-rotating cylinder 35, provided with devices for arresting the forward movement of and retaining the leading ends of succeeding sheets until they are reversed and stripped from the carrier, all substantially as described.

4. The combination, with the rotating sheet carrier, of the rotating cylinder 35, provided with devices for arresting the forward movement of and retaining the leading endsof succeeding sheets, and devices for keeping the sheets distended until reversed and stripped from the carrier, all substantially as described.

5. The combination, with web-severingmechanism, of the rotating sheet-carrier and the rotating cylinder 35, provided with devices for arresting the forward movement of and retaina ing the leading ends of succeeding sheets, all

substantially as described.

6. The combination, with the rotating sheetcarrier provided with one member of a severing mechanism and lilting-fingers, as 7, of the cylinder 16, provided with the other member of the severing mechanism and the rotating cylinder 35, provided with devices for arresting theforward movement of and retaining the leadingends of succeeding sheets, all substantially as described. I v

7. The combination, with the rotating sheetcarrier', of the rotating cylinder 35, provided with devices for arresting the forward movement of and retaining the leading ends of suc-,

ceeding sheets, and the retainingbars 17 movnesses- LUTHER O. OROWELL. Witnesses J. O. HODEY, T. H. PALMER.

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