US1148853A - Bag-turning machine. - Google Patents

Description

A. NOYES.

BAG TURNING MACHINE.

APPLICATION min APn.1, 1915.

Patented Aug. 3, 1915.y

2 SHEETS-SHEET l- @wi/mm A. NOYES.

BAG TURNING MAHlNE.

APPLICATION FILED APR. I, 1915.

Aug. 3,1915. z SHEETS-#sam 2. f

ITED sTnTns PATENT onirica.

ALBERT NOYES, 0F ATLANTA, GEORGIA, ASSIGN OR TO AMERICAN BAG COMPANY, OF MEMPHIS, TENNESSEE, A. CORPORATION 0F TENNESSEE.

IBAG-TURNING MACHINE.

Specification of Letters Patent.

Patented Aug. 3, 1915.

To all whom it may concern:

. Beit known that I, ALBERT Noires, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Bag-Turning Machines, of which the following is a specication. l

This invention relates more particularly to improvements in that class of bag turning machines in which the bags are turned by air suction, and inorder to more fully describe the same, reference will be had to the accompanying drawings which show one specic form of a machine embodying said invention, and wherein:

Figure l, is a side elevation of said machine; Fig. 2, a top plan view thereof withv the sulierstructurev removed; F ig. 3, a central vertical section of the suction chamber with the two sections thereof separated; Fig. 4, a section on line 4c X Fig. 1, and Fig. 5, a detail end elevation of the expansible mouth through which the bags are drawn.

The machine herein shown comprises, among lother parts, an, air suction chamber which is made in two separable sections 1' and 2, Section 1 is mounted fast upon the top of the main frame 3 of the machine, while section 2 is adapted to reciprocate in front-of section 1, 'and for this purpose is slidably mounted in stationary guides 4. Section 1 is Aprovided with two air passages or compartments 5 and 6. Compartment 5 is provided with an'air outlet 7 for attachment to aduct 8 which leads to a suction' fan 9 or any other means for produclng airv suction through the outlet 7 in the direction indicated by the arrows in Fig. 3. Compartment 5 is closed. at one end where it is provided with a glass Window 10 and is open at its opposite `end. Compartment- 6 is pro vided with a telescoping section 11, which is adjustable longitudinally of-said compartment for different lengths of bags. This adjustable Asection 11 is provided with an eXpansible mouth consisting of two relatively movable sections 12 and 13, having overlapping flanges or lips 14 or 15. (See Fig. '5.) Member 12 is stationary, while member 13 ismovab1e for the purpose of expanding and contracting the mouth opening, as hereinafter described. Compart-y lout of the bags as they are drawn through the rear end of section 1l. A wire screen 5 prevents the bags from being drawn into compartment 5. v

Chamber section 2 is separated by a partition 15,`into two compartments or air passages 16 and 17, which open into each other at the rear of said partition, as shown most clearly in Fig. 3. The end ofsection 2 adjacent section 1 is open, while'its other end is permanently closed by a glass window 18.v Section 2 also has an opening 19 in its bottom, provided with a leather flap 20 for purposes which will hereinafter more fully appear.

The adjacent edges of sections l and 2 are faced, respectively, with felt or other suitable material 21 for preventing the escape of air through said portions when the sections are brought together.

Reciprocating motion is imparted to section 2 by mechanism presently to be described, in such manner as to bring the faces 21 of said sections together and separate them alternately. The bags are placed one at a time with their open ends over the lips 14 and 15 of the mouth of the suction chamber, while the said mouth is contracted, after which the mouth expands and holds the open end of the bag. Suction is constantly applied to outlet 7, so that when the sections 1 and 2 are brought together as stated, an air suction is created through the mouth of section 1 which takes the course of the arrows yindicated in Fig. 3, passing out through opening 7. This suction draws the bag invthrough the mouth of section 11, at the same time turning it and delivering'its closed end to compartment 17 of section 2.

Immediately after this turning operation', i. i.

away. from section 1', ,and Vat the lproper-'time tion 2 through two rocking levers 23 and 24 mounted at their lower :ends .upon a rock shaft and connected at their upper ends lthrough rods -2G. and 27, respectively, to a shaft 28 which extends transversely through section 2.

between levers 23 and 24 and' rods 26 and 2T b v having -said levers act uponsaid rods through springs 29 and 30, the rods26 4and 27 passingv through openings in the upper ends of said levers. Levers 23 and 24 are operated b v connecting rod 31 attached to a l crank arm 32, fast on a shaft 33, which re- -ceives its motion through a gear 34, meshing with a smaller gear 35 on a main driving shaft 36 on which latter ismounted fast a pullev'3'7 connected b v belt 3S with .anyj suitable source of power.

Shaft 36 carries also an idler pulley 37 to which the belt .may be shifted.

The necessary adjustments ofthe travel of chamber section 2 are effected by adjusting the lengthof connecting rod 31 and the effective stroke or throw of crank arm 32. For the purposeof adjusting the length of connecting'rod 31, it is preferably made in two telescoping sections which may be clamped together in the adjusted position by a. set screw 39 or'other desired means. For the purpose of varying or adjusting the throw of crank arm 32, connecting rod 31 is attached thereto through a pin and slot connection as shown in Fig. 1.

The gripping device above referred to comprises, among other parts, two arms 40 fast upon shaft 28, and connected .by a web 22. This gripping device is operated by the following mechanism: Fast to shaft 28 on the outside of chamber'section-2 is an arm 41 having an offset roller 42,- in the path of which are located two stationary inclined plane members 43 and 44, attached to the outside of one of the guide supports 4.

Member 43 is mounted upon a' pivot 43".-

Member 44 may or may not be pivoted as desired. As shown in Fig. 1, chamber section 2 is at about the center of its travel forward or toward section 1. As section 2 proceeds toward section 1, roller 42 travels up the inclined plane of member 43 thereby raising arms '40 and web 22 of the gripping device, and just after 4sections 1 and 2 come together, roller 42 passes off the forward end of member 43, which allows arms 41 to drop,

thereby causing the gripping device todrop onto the forward end of the bag sucked into .section 2. As section 2 travels away from section 1, roller 42 of arm V41 travels below member 43, which latter turns on its pivot 43 'to permit the roller 42 to pass and al- Yielding connection is effectedA i ment of section 2 in lts back travel. When lows .the gripping device to retain its hold on the bag. When section 2 approaches-thev it is drawn-out of section 1 b v the move? the roller 42 passes off the rear end4 of member 43, it strikes the inclined end of a guide member 431 which prevents the too sudden dropping of the gripper 22. As section 2 a}. proaches section 1, the bottom edge of an inclined ar1n46 fast to ysection 2 engages the upperedge of a curved pivoted lever 47 on section 1 and forces it down against the tension of a spring 48. Lever 47 being thus ac tuated, operates upon an' arm 49 fast on a shaft 50 on which is mounted a damper 51 within compartment 5. Therefore, when sections l` and 2 abut, the damper 51 will open compartment 5 tothe free passage of air, and when section 2 recedes from section the bag is dropped upon said conveyer when l l, the damper automatically closes under the action of spring 48. .The clos-ure of the damper in this way prevents thebag from' being drawn upward by suction after sections 1 and 2 have separated. The function of opening 19 and flap 2O is to effect a quick break in the suction when section 2 starts on its back travel.

Reverting now to the conveyer, this comprises a belt 45 carried on two drums 52 and 53,'v7 the latter of which is mounted upon a shaft 54 to which power isapplied, as hereinafter described, to drive the conveyer.-

For the purpose of stacking the turned `bags on the conveyer, its motion is made intermittent, .that is, it remains stationary until a certain number `of bags, fiftyfor example, have been delivered to it one upon the other, and then it moves forward to deliver the stack thus formed. For the purpose of imparting this intermittent motion to the conveyer, the following mechanism is provided: Fast on shaft 54 is a sprocket 55 which is geared through a chain 56 to a sprocket 57 fast on a shaft 58. Also fast on shaft 58 is a clutchmember 59, which is adapted at times to engage with a clutch .member 60 loose on said shaft. Clutch Vmember 60 is fast to a sprocket 61 which is geared through a chain 62 to a sprocket 63 fast 0n power shaft36. Clutch member 61 is slid axially of shaft 58 so as'to bring itinto engagement and out Vof engagement with clutch member 59,'by alever 63fulcrumed as at 64 and operated by two cams `65 and 66 on a face of a gear 67 fast on a shaft 68 and meshing with a worm 69, fast upon a shaft 70, which in turn is driven from shaft 33.

`themselves so arranged, that each time chamber section 2 makes fifty trips, or ltty bags are delivered to the conveyer 45, one of the cams 65-66 will operate upon lever 68 to cause the coupling of clutch members 59 and 60, whereupon the conveyer 'will be drivena suficient distance to deliver the .to turn -on its fulcrum on the action of stack of bags carried thereby.` The conveyer is automatically stopped at the required point by the separation of clutch members 59 and 60, which is in turn effected by the passage of one of cams 65 or 66 from engagement with lever 68, allowingl said lever spring 71.`

Each time a bag is dropped onto the conveyer, it is pressed down thereupon and held by. a series of prongs 7 2 fast on a rock shaft 73.v- This rock shaft receives its motion through anarm 74; fast thereto and connected to a rod 75 adapted to travel in a guide 76 land to engage the periphery -of a cam 77 from which the said rod receives vertical reciprocating motion. Cam 77 is in turn mounted fast upon a shaft 78 which is connected through beveled gears 7 9 and 8O to shaft 33. Shaft 7 8 also operates mouth member 13, and for this purpose there is mounted fast on said shaft a cam 81 upon the periphery of which bears on`e end of a lever 82 fulcrumed on a stud 83 fast to the frame of the machine. Lever 82 is flexibly connected at its upper end to a reciprocating mouth 13. The lower end of lever 82 is .held against the periphery of cam 8l under the tension of a spring 84.

The foregoing is a description of one specie form of my invention. This, however,

.is susceptible to various modifications and changes which may be made within the scopeof what'I claim. What I claim isz- 1. A bag turning machine comprising a -suction chamber having two separable sections each having an open end and .said ends facing each other, one of said sections having an outlet for the attachment of an air suction duct and the same section having a mouth through whichthe bagsare drawn in turning, and mechanism to eiect relative reciprocating motion between said secy tions to bring their open ends together and 'separate them alternately. v

2. A bag'turning machine comprising a suction chamber having two separable sections each having an open end which face each other, one of said sections having an air passage or compartment provided with anoutlet for the attachment of an air suction duct, and the same section having another passage or compartment provided with a mouthV through which the bags are drawn an outlet for the attachment of an air `suction duct, and the same section having another passage or compartment provided with a mouth through which the bags are drawn in turning, mechanism to effect relative reciprocating motion between said sections to bring their open ends together and separate them alternately, a damper in the first mentioned compartment, and mechanism to open said damper when said sections are' oi-ought together and to close the same when they are separated.

l. A bag turning machine comprising a suction chamber having two separable sections each having an open end facing -each other, one of said sections having an outlet for the attachment of an air-suction duct and the same section having amouth through which the bags are drawn in turning, mechanism to effect relative reciprocating motion between said sections to bring their open ends together and separate them alternately, bag gripping means located in one of said sections, `intl mechanism to cause said means to grip a bag drawn by suction into said chamber when said sections are brought together and to release the bag after said sections have been separated.

o. A bag turning machine comprisinga suction chamber 4having two separable sec tions each having an open end facing each other, one of said sections having an outlet for the attachment of an air suction duct and the same section having a mouththrough which the bags are drawn in turning, mechanismto eifect relative reciprocating motion between said sections to bring their open ends together and separate them alternately, bag gripping means located in one of said sections, mechanism to cause said means to grip a bag drawn by suction into said chamber when said sections are brought through which the bags are drawn in turn# ing, mechanism to effect relative reciprocating motion between said sections to bring their open ends together and separate them gripping `de\'ice,` and lmeans to intermitalternately, bag gripping means located in tently operate the conveyer. 1o one of said sections, mechanismv to cause In 'testimony whereof .Iv aix my 'signu- ,said means to grip abag drawn by suction ture in presence of two witnesses.

5 into said chamber when said sections are ALBERT NOYES.

, brought together and 'tm-release the -bag 4 Witnesses: f

after said sections have been separated, a GEORGE H. BoYN'rox, con'veyer to receive the bags released by the H. H. TRAYWICK.

Images