US1443588A - Bag opening and filling machine - Google Patents

Description

Jan. 30; 1923.

K. OTTING. BAG OPENING AND F1 LLING MACHINE.

ORIGINAL FILED MAY 12, 1921 Witnesses:

Patented Jan. 30, 1923.

KARL OTTING, OF BERLIN, GERIIIANY.

BAG OPENING AND FILLING MACHINE.

Original application filed May 12, 1921, Serial No, 468,866. Divided and this application filed May 16,

Serial No. 561,509.

(GRANTED UNDER THE IROVISIQNS OF THE ACT OF MARCH 3, 1921,41 STAT. L, i313.)

Z '0 all whom it may concern lie it known that I, Kant. OTTING, a citizen of the German Republic, and a resident of Berlin, Germany, have invented certain new and useful Improvements in Bag Opening and Filling Machines, of which the following is a specification, and for which I have obtained German Patents 345,029, on Sept. 27, 1921, and 349,417, on December 30, 1921, both patents being granted on an application filed April 26, 1919, and British Patent 157,320, on June 28, 1921, on application filed January 10, 1921 (the present application being divided out of my copending patent application Serial No. 468,866, filed May 12, 1921).

In bag opening and filling machines provided with rotatable bag openers it is very difficult to effect in a reliable manner, that the bag openers in every turn take a bag from the pile of bags and that then one opener after the other presents to the fillingdevice a bag without fail.

According to this invention the bags are piled within a magazine vertically upon one another so that they can be withdrawn from underneath. The lowest bag is stripped from the magazine bythe respective opener under the weight of the pile of the bags resting upon it, and thus it is not necessary to have separate weights for pressing down the in the magazine. lVith the latter eo-operates a turret carrying the bag openers in such a manner that a number of similar bag openers are moved one after the other into a horizontal position for withdrawing the bags from the vertical pile, and during the intermittent stopping of the machine are held in such a manner that the vertically and horizontally moved magazine pushes the lowest bag on to the horizontally presented bag opener from the latter.

As the turret carrying the bag openers continues its movement, the bag openers together with the bags slipped on to them are brought again into a vertical position. and present the bag to the filling hopper, whereupon after a further movement the filled bags are delivered to a closing device or may be closed by hand.

A. constructional example of this invenand then moves away tion illustrated. in the accompanying drawing in which lj ig. 1 is a side clevationthereof and Hi g. 2 a plan view.

The bag magazine a for the bags as, which are placed in said magazine with the part to be flapped directed upwardly, and are lying upon one another in a vertical pile, is guided along a bar Z). The bar 6 is fixed to a slide Z) which is guided vertically in the frame 0. The frame 0 is bolted to the base plate (Z. v

The rotational motion is transmitted from the main shaft m which latter is driven by a pulley m. The main shaft or transmits its rotation by a chain gearing it, n, 0 to the shaft eand hence by a bevel gearing e and a chain gearing e to the shaft to. The shaft 20 carries a cam 72 engaging with a roll 6 of the slide Z). By the rotation of the cam b the bag magazine a is raised and lowered. On the shaft w there isfurther mounted a crank a, which by means of the connecting rod o moves the bag magazine to-and-fro along the bar Z).

This motion is such that the-bag magazine a pushes the lowest bag on to the horizontal bag opener 7 presented to it and then moves away from the said opener.

Owing to the influence of the cam b and the crank a the motion of the bag magazine a is substantially rectangular.

At the side of the bag magazine a there is mounted on the plate d the bag opener turret comprising a hollow shaft 2' rovided with arms bag openers 7", of which for instance four are present. These bag openers are adapted to rock on the shafts f and of-loeing moved by a cam g, engaging with the rollers f of the bag openers f, alternately into the horizontal position shown at the right hand of Fig. 1, or into the vertical position shown at the left hand of the said figure.

The turret 2 is rotated in an intermittent motion by means of a bevel gear m and a carrying on shafts f the gear known as Maltese-cross or any other shaft Durii'ig each revolution of the main shaft m and ot the locking plate Z the crose-wheelv Z is once engaged L the roll Z on the end of the crank Z and rotated for the fourth part or a revolution in accordance with the number of bag openers f. it will be understood, that the turret .2 is rotated only, after a bag has heen pushed on its bag; opener 7' presented to the bag magazine a, and that the turret .2 is at standstill during: this pushing motion.

After a quarter rotation of the turr the bag openers '7 together with the pu on hag, pass from the position i in Fig. into the vertical position ll underneath 'i'l filling hopper h which belo dcvici: of any known construction. i example shown the hopper receives the contents for each of the bags from a. digtributing cyrinder t rotating below a larger hopper 11 containing a stored supply ol the material to he filled into the bags. The axle of the cylinder 25 carries a grooved wheel which is engaged hv a pin u on the chain wheel 1'" driven by chain gearing o, o from the shaft 6. During the time in which the turret- 2' is at rest for the purpose of strip ping the lowest on the bag opener j" presented in the horizontal position I to the magazine (1, the cylinder receives a tial revolution in order to deliver a il11F urcd quantity of the material throu hopper 71 and the beg opener j, which h t-he form of a chute into the ban ()CCll';)f.ll1,f,f now the position ll.

After the filling, the bags pass during a. further quarter revolution of the turret .2" into a position opposite the closing" do. (position ill). in general the triction between the bags and the openers is sitflicientlv great to cause the bags to be helc lirmlv upon the bag opener during; the 'inoven'ient from position 11 into position Hi. However in order to prevent an unintentional sliding off of the filled from the bag opener, asat'ety bar i is provided under their path. ilehind ach bag" opener f there is guided on its carrier 7*, a stripper 7'": which in the position Ul is set in operation to strip off the bags 'h'OD'l the opener 7. This is etlected by a double lever p, which is swinging on a. pin '0 and carries on one end a roll p" entering a iJ-shaped frame (1 of the stripper The other end or the lever 72 is engaged by a cam p on an extension 0 of the shaft 6. In the position Il of the openers f, the turret 2 being at rest the earn 79 raises the neighbouring end of the lever 39' and its other end pushes down the ripper T he filled bags are received by a guide through 15 to he closed in any known manner.

l'hivingr now particularly described the nature of my invention, wuat I cluini as new and desire to secure by Letters .latent' of the United States is:

l. A bag o 'iening and filling machine, comprising a ban ina azine adapt l to receive therein the verti. ally piled ha 1 rotatable bag presen ing turret, a pier lit-y of bag openers carried by said turret, a lillin device, means for moving the hue; magazine relativ lv to the bag openers and 111135.. swine'n the bag; openers into one position in order to receive a bag); from the beg; magazine and to present the has; stripped onto the opener to the filling device in the other position.

2. A bag opening and filling machine, comprising a bag ma -azine adapted to r ceive therein the vertically piled bans, e. rotatahle hag presenting turret, a phnralitv oi? liagopeners carried by said turret, a filling device. means for moving the bar: magazine horizontally and vertically relatively to the bag openers and means for swinging the bag openers into one position in. order to receive a hen; from the bag magazine and to present the ban stripped onto the opener to the filling device in theother position.

In testimony whereoi I aflix rev signature in presence of two witnesses.

KARL (YiTlilli.

\Vitnesses it. hlon'rzrnrrsn, R. 'l. Answer.

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