US2430073A

US2430073A - Bag holder

Info

Publication number: US2430073A
Application number: US576260A
Authority: US
Inventors: Jr Leon J Nowak
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-02-05
Filing date: 1945-02-05
Publication date: 1947-11-04
Anticipated expiration: 1964-11-04

Description

Nov. 4, 15947.

L. J. VNOWAK, .JR

BAG HOLDER 2 Sheets-Shet 1 Filed Feb. 5, 1945 Nov. 4, -1947.

L. J. NowAK, JR

BAG HOLDER 2 sheets-sheet 2` Filed Feb. 5, 1945 l '['lllllllllllllllllIIIIIIII- Patented Nov. 4, 1947 UNITED STATES ATENT OFFICE 3 Claims.

My invention relates to an improvement in bag holders and has for one purpose to provide an improved method of and means for holding bags on members such as grain spouts, dust spouts and the like.

Another purpose is to provide bag supporting or bag securing means of sufficient strength to hold the bag during the course of lling, and when lled.

Another purpose is to provide bag holding or supporting means which eliminate bag tearing or cutting.

Another purpo-se is to provide bag securing or holding means which can be quickly and safely employed by a user, without risk of injury to the user.

Another purpose is to provide bag holding means which are quick and eicient in operation.

Other purposes will appear from time to time in the course of the speciiication and claims.

My invention is illustrated more or less diagrammatically in` the accompanying drawings wherein:

Figure 1 is a side elevation;

Figure 2 is a section on the line 2-2 of Figure 1;

Figure 3 is a side elevation on a reduced scale; and

Figure A is a diagrammatic illustration of the mode of operation of the bag holder, taken substantially at line flof Figure 3.

Like parts are indicated by like symbols throughoutthe specification and drawings.

Referring to the drawings l generally indin cates the lower generally cylindrical portion of4 a feed spout having a bottom or bag securing ange 2 and an upper positioning flange 3 eX tending outwardly from the spout itself. '-l generally indicates a support or base which may be secured to the spout for example by positioning anges 5 and rivets or other securing vmeans The support il is shown as having a lateral exe tension l. Mounted on the support are two pairs of flanged rollers or guides 3 which serve to guide and position a longitudinally movable flanged rack bar 9 having the driving rack lo arranged along one edge and teeth I I along the other. The rack bar 9 is normally urged against any suitable limiting stop I2 by the action of the coil spring i3 which is anchored at one end, as by the pin iii,

2 on the base extension I and is secured at the other end, as by the pin I5, to the outer end of the rack bar 9. I5a is any suitable handle whereby the user can manipulate the rack bar. In mesh with the rack I0 is the pinion I6 mounted on a shaft Il which is supported in any suitable bearing in the support or base 4 including a down wardly extending portion I8. The shaft Il carries at its lower end a flange or disc I9 with a pair of downwardly extending

pins

20, 20a. The dog 2l pivoted as at 22 on the base Il is normally urged by the spring 23 into engagement with the teeth l i, whereby it is adapted to prevent the spring i3 from moving the rack bar 9 to the right, referring to the position of the parts Ain Figures l1 and 2. 24 is a. handle whereby the operator can move the dog 2| to inoperative position when a return of thev rack bar 9 to its initial position Ais desired. In the particular form of the device herein shown, a cylindrical portion I of the spout is recessed as at 30, to form an arcuate concave walled space to receive part of the lange I9 and to permit the center of rotation of the pin carry'- ing ilange IS to be somewhat closer to the center of the spout.

In the use of my device the user threads the empty bag 35 about the spout I. To insure a proper positioning of the bag he may employ the upper ange 3 as a gauging means, holding the bag with its upper edge at the vlevel of the lower side of the ange 3. At the same time vhe threads the edge of vthe -bag between the pins Z0 and 20a, as shown in Figure 3. He then pulls the rack bar 9 to the left, referring to the position of parts as shown in Figures 1 and 2. The

result is a rotation of the gear I and thus of the pins -20 and 20a through several revolutions. Since the rupper edge of the bag is between the two pins the result is to wind in the slack of the bag and to tension the bag tightly about the exterior of the spout l Since this tensioning takes place above the flange 2, that flange vforms an effective supporting means for preventing the bag from escaping downwardly. The supporting or locking effect is suflicient to permit the bag to support its own weight and the weight ofthe charge delivered to its interior through the spout I. While it is receiving the charge it is kept locked innposition 2i by the engagement of the dog with the :teeth II. The means for controlling the flow of the charge through the spout I do not form part of the present invention and are not herein described or shown.

After any suitable charge has been delivered to the interior of the bag, and after the delivery of material has terminated, the bag can be released by the operator by so moving the handle 24 as to Withdraw the dog 2| from the teeth II. The action of the spring I3, and the tension of the bag itself are then effective to cause the rack bar 9 to move toward the right and to unreel or release the slack of the bag. Any suitable means not herein shown may therefore be used to close the bag. Or the bag, with its top open, may be dropped on Aany suitable support or conveyor and be removed elsewhere for further handling or treatment.

It will be understood that whereas I show only one of the twisting mechanisms above described, two or more may be employed, preferably unitarily rotated by or through any suitable driving connection. It will also be understood that the particular driving means illustrated is but one of a number which might; be employed. I may for example employ a positive drive for the rack bar 9,.controlled in any suitable manner by the operator.. I may for example employy a pneumatic or hydraulic system for moving the rack bar in the desired direction. Any suitableV return means may also be employed to take the place of the spring I3. l l

Itwillber realized that, whereas I have described and -illustrated a practical and operative device, .nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I therefore wish my description and drawings to be.y taken as in a broad sense illustrative or diagrammatic, rather than as limiting me to my precise showing.

For example the shape and nature of the twisting element may be widely varied, and the means for preventing the escape of the tensioned bag top from the spout may be widely varied. I may employ, a bell mouthed spout or a spout having a ,variety of outwardly extending bag gripping elements, orY a roughening of the outer .surface ofthe` spout. I may employ `frictional material on the spout or on the bag or on both.

' Where I employ the term tensioning in connection with the reduction of the effective circumference of the bag it will be understood that I do not wish the term to be limited specifically to subjecting the bag to positive tensioning about the support. For example, in relation to the structure as shown, the spout I, or other support to which the bag is secured, has an outwardly extending lower enlargement or flange 2. With reference for example to Figure l, if the

pins

20 and 20a are rotated suiciently to reduce the effective circumference of the neck of the bag to less than the circumference of the flange 2, than the gravital pull of the bag, and of the charge in the bag, will be effective to draw the reduced part of the bag downwardly against the flange 2.

evenpthough the bag is` not positively tensioned about the exterior of the sleeve I, downward escape ofthe bag over the flange 2 `will be prevented, and the weight of material in the bag will maintain a tight thrust of the bag against the edge of the flange 2 which is effective to prevent the escape of any substantialv amount of dust, or of the charge itself where light or powdered material is being delivered. I intend the language of the claimstobe .interpreted in connection with this fact. It is not necessary, although it may be desirable, positively to tension the bag around the exterior of the spout or support I.

The use and operation of my invention are as follows:

My invention may be advantageously employed as a bag support or holder for holding a bag in position in relation to a spout through which a charge of material is delivered to the interior of the bag. When so used the loose neck of the bag is tensioned about the exterior of the spout, with the flange 2 preventing the bag from escaping from the bottom of the spout. When the bag is thus locked in position, with the dog 2I holding the rack bar 9 in the locking position, a charge of material is dropped into the bag. The bags used are preferably of material strong enough to support the Weight of the charge, and

the entire weight of the filled bag is taken by the end of the spout and the flange 2. The filled bag is thus suspended by its upper edge or neck. The bag may be filled over any suitable support, for example the conveyor generally indicated at 50 in Figure 3. When the bag is filled, the user can drop it on the conveyor by merely releasing the dog 2I by manipulating the handle 24. When the dog 2l is released the spring I3, and the tension of the bag, are effective to unwind the

pins

20, 20a or their equivalent. The bag is then free to drop by gravity upon the conveyor 5D, which carries it out of vertical alignment with the spout, for further handling or disposal.

I claim:

1. In a bag holding assembly, a support for the bag having a generally peripherally continuous bag supporting fiange adapted to enter the open mouth of and lie in a plane generally perpendicular to the longitudinal axis of the bag, a bag twister having fingers located above the flange, one finger adapted to engage the inside, another the outside of the material of the bag mouth, means for rotating the fingers to twist the material and fold it upon itself to constrict the bag mouth above the flange, the axis of rotation of the twister being located inside the periphery of the iiange and so disposed with respect to the flange that after the twist has been made, the twisted portion of the bag below the ends of the fingers lies entirely inside and above the outer periphery of the fange.

2. In a bag holding assembly, a support for th bag having a generally peripherally continuous bag supporting flange adapted to enter the open mouth of and lie in a plane generally perpendicular to the longitudinal axis of the bag, a bag twister having fingers located above the flange, one finger adapted to engage the inside, another the outside of the material of the bag mouth, means for rotating the ngers to twist the material and fold it upon itself to constrict the bag mouth above the flange, the axis of rotation of the twister being located inside the periphery of the flange and so disposed with respect to the flange that after the twist has been made, the twisted portion of the bag below the ends of the fingers lies entirely inside and above the outer periphery of the flange, the lingers being downwardly extending and terminating above the flange at such a distance that the twisted portion of the bag below the finger ends terminates immediately ad jacent the upper surface of the flange,

3. A bag holding assembly, including a spout, a bag supporting flange extending radially from and about it, having an upper surface generally 6 perpendicular to the outer wail of the spout, REFERENCES CITED twisting means having nngers located entirely The following references are of record 1n the above the upper surface of the flange, one nger fue of this patent: adapted to engage the inside, another the outside of the material of the bag at the mouth, means 5 UNITED STATES PATENTS for rotating the twister to cause the fingers to Number Name Date twist the material and fold it upon itself to con- 768018 ROSS Aug 16, 1904 strict the bag mouth upon the spout above the 2,100,501 Bennett N0V 30, 1937 flange, the axis of rotation of the twister being 1,554,550 Berger s619022, 1925 located inside the periphery of the flange and the 10 2,039,561 Sharkey May 5, 1935 twisted portion of the bag below the fingers lying 1,154,722 Penrod Sept 2gJ 1915 entirely inside the outer periphery of the flange. 1,231,028 Kruse Oct. 8, 1918 2,058,431 Eschenbacher Oct. 27, 1936 LEON J- NOWAK, JR 608,853 Graves Aug. 9, 1898