US1518522A - Suction feeding machine - Google Patents

Description

Dec. 1924- 1,518,522

H. KREJCA SUCTION FEEDING MACHINE 4 Sheets-Sheep 1 Filed June 18, 1923 IN VEN TOR Hen/"g fire 'ca r v A TTORNE Y H. KREJCA SUCTION FEEDING MACHINE Filed June 18, 1923 I 4 Sheets-Sheet 2 Dem 9 4 I 1,518,522

IN VEN TOR Hen/"y K/"e 'ca A TTORNE Y DEC. v

H.KREJCA SUCTI ON FEEDING MACHI NE 4 Sheets-Shet Filed June 18, 1 925 A TTORNE Y Dec. 9, 1924. 1,518,522

1-1. KREJCA SUCTION FEEDING MACHINE 4 Sheets-Sheet 4 Filed June 18, 1923 BY W ATTORNEY Patented Dec. 9, 1924.

UNITED STATES PATENT OFFICE.

HENRY IREJ'CA, Q1 PEARL RIVER; NEW YORK.

SUCTION FEEDING :HACHINE Application fled June 1a, 1923. Serial no. 646,198.

To all whom it may concern: v

Be itknown that I, HENRY KREJCA, a citizen ofUnited States residing at Pearl River, in the county of Iiockland and State l of New York, have -invented certain new and useful Improvements in SuctionFeeding Machines, of which the following is a specification.

'vention relates to improvements 1 in. apparatus for single sheets of paper froma stack'or pile of the same, one

after another, atany de sired rate of speed, so long asmay be r uired.

Oneof the several 0 jects of the invention.

15 is to provide an apparatus having a detachable platform provided with pivoted, casterlike wheels,'bywhich it may he moved from place to place in the manner. of a truck,

receiving a load. of paper from a stock supply and thereafter returned to the apparat'us, engaged with vertical guiding columns and an elevating mechanism so that the uppermost sheets are broughtlevel with the 35 A further aim is in the provision of auto.-

matic sucker devices clamping. upon the uppermost sheet, then raising and projectin the same forward (center between feed ro ers and thereupon releasing. the sheet. 0 Other objects are, to providemeans preventingthe discharge of "more. thanv arsingle,

sheet at each delivery. tothe press or other device to which the paper is fed; to coordinate the several instrumentalities to 45 ogerate in time and. harmony to produce an e cient operative strudiure in wh ch manual labor is reduced to a .minimum,.supervision onl being required;'

v several aimsand' object s, togetherv 60 with others which will become apparent as the description progresses, are accomplished bmation of parts hereafter described euppersheets permitting the entrance of air therebetweeii and tending to.

' beams are provided with 1 b the novel design, construction and 100m illustrated in the accompanying drawings, forming a part hereof, and in which Figure 1 is a plan view ofanembodiment of the invention. V.

Figure 2 is a rear elevationalview thereof. Figure 3 is a side elevational view of the same.

Figure 4 is a transverse sectional view taken on line H of Figure 1. Figure 5 is a similar sectional view taken on line 5-5 of Figure 1. q I H Figure 6 is an elevational. view. looking from the opposite side of the apparatus; 1

. Figure'7 1s a fragmentary sectional view ure 2.

Figure 8 is a sectional view illustrating the construction of the suckerhead.

Referring to the drawing more in detail,

the numeral desi ates a pair of side beams suited to rest upon the floor these beams having between them at the front a rigid cross beam 16 firmly securing them inspaced relation.

A pair of columns 17 extend upward at the front from the side beams, a similar pair 18 being disposed at the rear, both pair suppontm'g side frame elements 19 and 20 respect1vely at the right and left hand sides of the apparatus, the frame side's beinlg stiffened by a cross beam 21 extending etween the front columns. a An elongated rectangular frame is composed of endbeams 23 and side beams over which is r'emovably engaged the plat forms proper, the same being provided with upstanding guide rods 25 used to position the paper. 1

Extending down at each corner of the frame are swivelled truck wheels or casters 26 permittin trundling .the platform upon" any level an: ace, as from a storage of paper to the mechanism.

This platform is between the rear uprights 18 and the end and 28 adapted to contact with the rear side of theuprig'hts, limiting theadvance of the platform and slide as the platform is raised.

When. the platform is then by the uprights, it is heldfro'm moved outwardly by pairs of ins 29 making slidtaken approximately on line 7-7 of Figide blocks 100 of as length 88130 fit ing contact wlththe r'ont surfaces-of the which may be inserted sheaves 36 rotatable upon pins 37 fixed in the plates 31 and movable with them uponoperating thehandles 33.

A shaft 40 is journalled in the fraine sides 19' and 20, this shaft having fixed u on it drums 41 adjacent the frames, one of the drums, next the side 20 being fast with aratchet 42 engaged by a pawl 43 drawn into operative position by a spring 44. Cables 59, fixed at one end, are wound upon the drums, the bights of'the cables passing around the sheaves 36 so as to raise the platform when" the shaft 40 is turned in onedirection. a

The end of the shaft 40 projecting through i the frame 20 has ffixed upon 1t a worm wh'eel'45, spaced fromthe frameby a plate 46, pivoted at 47,- the plate having a slot in which the shaft operates as the plate is moved. i

Said plate is provided with bearings 48 in which is mounted a shaft 49 carrying a worm 50 engageable with the worm wheel 45 and provided with a reduced extension having a hand wheel 51 by which the worm may be rotated.

The worm 50 is held in engagement with the wheel 45 by means of a pin 52 fixed in a spring arm 53 attached at its upper end to the frame side and extendingdown to make contact with aprojectinglug 54 carried on the platform element 23 so that as the platform is raised a certain height, 7 the arm will be moved outwardly, allow-Q ing the plate 46 to turn on its pivot and disconnect the worm from the wheel 45, this effect-being accomplished by by a pull spring 55. r

front of the frame, has fixed'at oneend a spur gear 61 beyond which is a cam '62 having a sin le' throw, this cam actuating a lever 63 the hub 64 of which encircles the shaft 49'and-actuates it by means of a-ratchet contained in the hub so that at each move ment ofthe lever, by'means ofthe cam, the

shaft is given an intermittent progressive 'movement,"whieh in turn is transmitted to an intermediate pinion 67 meshing withthe gear 62,- as best seen in Figure 3.

Fixed on the shaft 60 at its opposite end gravity assisted is a. cam 68 operating against a roller 69 fixed on the end of an arm 70 containing leading to a suction device (not shown);v

whereby a" partial vacuum is produced.

A pin 76 is engageable by a pivoted dog 77 operated by a link 78 attached to a lever 79 whenever it "is desired to prevent the tube 73v from turning.

Attached to the tube '73 are a'pair of rigid, levers 80, I adj ustably clamped thereon, these levers carrying sucker; heads 81 of rubber and provided with sprin ,con-

trolled valves 82 to which are engage flexible tubes 83'connecting with the tube, andi a feeler disc ,84' for actuating the valve is arranged axially'of the suckers 81.

It is also to be noted that a port 85 is formed in the frame communicating with an openingin the e'ccentric'when in acertain position, whereb 7 tubes and suckers is rokento release the I sheet'of paper previously'raised by them."

The advance edge of the. paper blanks the vacuum in the" a a resting on the platform are guided and I.

alin'edtby a pair'of vertical .rods 86 secured in the" cross bars of the frame and the upper sheets of the paper are loosened fronrthe pile by opposed toothed elements 87 driven by'a gear train, generally indicated at 88 in Figure 4, from the driven shaft" a 60, these gear trains being carried in brack-fi ets 89 hanging pendant fronithe shaft 60 and guided at their lower ends" by engagement with a transverse rod 90 disposed" etween the frame sides.

The rod 90 has fixed to it a pair offfin gers '91, curved to'contact with the*top of the pile and'to clear the shaft 65. Motion is 'transmittedto the rod' 90 by means ofa to the drive shaft" 60.

Another cam '94 fixed to the shaft 60 operates a lever 95 fixedon :a rod :96, said rod carrying arms 97 upon the ends of which are friction'wheels 98, arranged with relation to rolls 99 on the high speed shaft a A series of paper fingers 100 are secured to another rod '101 to which the lever 79 is 7 crank arm 92 operated by a crank 93 fixed The drive shaft 60, passing through the fixed, these fingers delivering the sheets of paper outwardly from the machine.

In operation, the platform having been loaded with a supply of paper sheets and engaged with the uprights .18, the sheaves and cables being in 'position,'the first adjustment or rise of the platform is accomplished'by using the handwheel 5 1, bring A constant suction is maintained in the pipe 75, communicated to the tube 73 and thence to the sucker heads, which are lowered to engage the uppermost sheet, raised and advanced forward due to the cam 68, to bring rolls 99 and wheels 98, causing them to grasp the sheet which is then liberated from the suckers due to the escape of air through the port 85.

The rolls and friction Wheels then advance the sheet upon the fingers 100, the next sheet being confined by the fingers 91,

which, as has been seen are moved out of the way u on the descent of the suckers for the next s eet.

It isto be noted that the sharp spurs of the elements 87 act to raise the edges of the sheets, allowing the entrance of air between, coincidently with the raisin efiectof the suckers, assuring a positive eed of a single sheet only.

Although the foregoing is descriptive of the adhering sheet between the the preferred embodiment of the machine, it is intended to be illustrative rather than restrictive and it is within the scope of the appended claims to make minor changes which do not embrace invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A paper feeding apparatus having a pair of uprights, drums at the ends of a orizontal shaft rotatable in the uprights, a platformed truck, means for detachably engaging said truck to the uprights to slide thereon, sheaves rotatably engaged in said truck, and cables operated by said drums engaging said sheaves.

2. A paper feeding apparatus having a pair of'stationary uprights, a wheeled platform slidable thereon, means for intermittently raising the platform by power, means on said platform for automatlcally disconnecting the raising means, means for retaining the platform when in a raised position, and means for detaching the platform bodily from the apparatus.

In witness whereof I have afiixed my signature. HENRY KREJOA.

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