US2008896A - Machine for filling bags - Google Patents

Description

July 23, 1935. A. c. BROWN MACHINE FOR FILLING BAGS Filed May 19, 1935 2 Sheets-Sheet 1 flbbert G. ,Bmww, 9W3

July 23, 1935. Q BROWN I 2,008,896

MACHINE FOR FILLING BAGS Filed May 19, 1933 2 Sheets-Sheet 2 mm HM Patented July 23, 1935 UNITED STATES PATENT OFFICE 2,008,896 MACHINE FOR FILLING- BAGS, Albert C. Brown, Chicago, Ill. Application May 19, 1933, Serial No. 671,783

2 Claims. (01. 226-49) The invention relates to machines for introducing articles of merchandise into individual bags or the like and the general aim of the invention is to provide a machine of this character which is simple in construction, and performs,

with exceeding efficiency, the operation of rapidly inserting a succession of articlesinto in dividual bags.

An object is to provide a new and improved machine in which a succession of articles are delivered to bags which have been opened to receive said articles by an air blast.

Another object is toprovide such a machine in which the articles move by gravity down an inclined plane into open bags which are supplied from a magazine located above said plane.

In conjunction with the foregoing, another object is to provide means for delivering the articles to the bags in which the articles are guided to move by their own momentum into the bags, the bags being so presented that the momentum of the articles displaces the bags from their presentedposition and the enclosed or packaged articles are free to fall to a disposal pointor removing conveyer.

More specifically stated, an object resides in the provision of a bag filling machine embodying a bed or support disposed at an angle to the horizontal and having a bag presenting magazine carried upon the upper side of said bed where access thereto is convenient, and article guide means mounted on the lower side of the bed for directing gravity impelled articles into the bags.

Other objects are to provide novel guide means 5 for directing movement of the articles, new and improved means for presenting the bags, and

simple means for adjusting the several parts ofthe machine.

Other objects and advantages will become ap- 40 parent in the following description and from the accompanying drawings, in which: Figure 1 is a side elevation, partially in ver tical section, of a machine embodying the features of the invention.

45 Fig. 2 is a plan view partially in section looking at the upper side of the machine.

Fig. 3 is a similar view but showing the lower side of the machine.

- While the invention is susceptible of various 50 modifications and alternative constructions, I- have shown in the drawings and will herein de.-,

scribe in detail the preferred embodiment, but it is to be understood that I do not thereby intend to limit the invention to the specific form 55 disclosed, but intend to coveroall modifications and alternative constructions falling within the spirit and scope of the invention as expressed in the appended claims.

In the drawings, wherein one form of the invention has been shown merely for illustrative 5 purposes, In designates generally a bed or like support which is adapted to be disposed in a generally upright position by lower legs ll secured at one end of the bed and elongated upper legs [2 extending from and pivotally con- 10 nected to the upper end of the bed. The bed is preferably supported at a angle intermediate the vertical and the horizontal and this angle of'inclination may be adjusted within reasonable limits by means of a conventional slot and wing nut 15 adjustment, generally indicated at l3, connecting the bed and the legs l2. The bed, as may be seen best in Fig. 2, is an elongated member providing a plane surface of substantial width.

As shown in Fig. 1, the upper surface of the 20 bed l0 carries a supply magazine, generally indicated at M, and an air blowing mechanism iii. The lower surface of the bed carries guide means it; for directing the gravity induced movement of articles A, such-as frozen confections or ice 25 cream bars, along the under face of the bed to a filling station I! wherein a bag B is presented to receive said articles.

Referring first to the magazine M, the preferred structure thereof is best seen in Figs. 1 30 and 2. In this embodiment, the magazine is formed of two spaced side sections each comprising elongated side bars IS, an arcuate upturned bottom plate l9, and a supporting bar 20 to which the side bars l8 and bottom plate I9 are rigidly aifixed. The bed ID at a suitable point intermediateits ends is provided with a sizable aperture in which the supporting bars 2!] are positioned in horizontally spaced relationship and each supporting bar carries a vertically disposed flange 2! which extends through said aperture and for a substantial distance beyond the under side of said bed. The purpose of the flanges 2| will hereinafter be more fully described. The magazine holds a stack of bags which are fed rearwardly toward the plane of the bed by such means as a weight 22 which rests against the uppermost bag and exerts a feeding force on the stack of bags due to the arcuate form of the bottom plates I9.

As each bag moves into the plane of the bed, or,.in other words, moves into registration with the opening in the bed, the bag is opened by a blast of air directed inwardly of the mouth thereof. For this purpose a suitable blower mechanism, indicated at 23 (Fig. 2), which may be driven by an electric motor 24 or the like, is supported on the upper surface of the bed with the outlet conduit 25 from the blower directed downwardly. Rigidly connected about the mouth of the conduit is a tubular duct 26 which is flattened to provide a wide and relatively narrow mouth constituting a nozzle 21. Preferably the blower mechanism, including the nozzle, is supported as a unit in vertically extending guideways 28 (Fig. 2) for movement to facilitate adjustment ,of the mouth of the nozzle properly with respect to the bags presented in the opening in the bed. For making this adjustment, such means as a screw 29 (Fig. 2) rotatably mounted-in bearings 30 and engaging a nut 3| rigid with the blower mechanism may be provided.

The bags vhich are preferably use'ctin. the present machine are of the type in which one side face is longer than the other to provide a flap,

herein indicated by the letter. C- Whenthe bags.

are stacked in the magazine, they are so ar ranged that the shorter sides.- thereof face toward the under side of the machine:v Means' is provided for engaging each bag,. and particularly the fiap C thereof, as it is.- presented. at the opening in the bed to hold said bag ina stationary position while the air blast from the nozzle 21. opens the bagv and until an article'has entered the open bag. In. this embodiment, the under side of the nozzle. carries; a sharpened projection or pin 33' which is centrally located and extends toward the magazine to engage the flap C of each bag near the upper edge thereof as it is presented in the opening of the bed. The upper side of the nozzle carries downwardly extending spring fingers 33 (best seen in Figs. 2 and 3) for engaging opposite sides of flap- C. These elements cooperate in properly correlating the mouth of the bag. with respect to the nozzle so that the blast from the nozzle, as

shown in Fig. l, is directed exactly against the mouth of the closed bag asit i'spresented in the opening to force the shorter fiapoutwardl'y V and thereby open the bag to its fullest extent.

In order to prevent the bag from being removed from the filling station by the air blast, spring fingers 34 (see Figs. 2 and 3) are suit-- ably mounted on the supporting bars 21 to-extend inwardly a short distance of the magazine,

these fingers being positioned to engage oppositesides of each bag near the bottom thereof as it is presented in the opening in the bed. Thebottom plates I9 terminate substantially in the plane of the bed, as indicated at 35 (Fig. 1), and

form a narrow ledge or stepon which the bottomof the bag rests. with the longer side disposed substantially in the plane of the under side of the bed and'with the open mouth of the bag extended outwardly away from the under side. 7

The guide means l6 preferably comprises a base plate 36, supported in'substanti'ally parallel and spaced relation to thebed "Land side guides.

' 31 extending between the base plate 36 and the bed. The side guides 3 1 are, asshown in 3, preferably mounted on the flanges M and extend upwardly therefrom alongthe. under side of the bed. The inner opposed faces of the-side guides; carry flexible yieldingguides- 38? which are secured to the side guides near: the upper ends: thereof and. extend convergently downwardly to a point: substantially adjacent the end; of thenozzle 211.. These resilient grades-serve to cem- Thus, the bag is supported ter a descending article and to direct the article exactly into the mouth of the bag.

The base plate 35, which provides a surf-ace over which a descending article slides, terminates at a point just above the filling station I! and is detachably and adjustably supported from the bed as by means of the wing nuts 39. The upper end of the base plate is spaced from the bed a somewhat greater distance than at the bottom end; and is curved away from the bed, as-indicat'ed at 40, to, facilitate insertion of articles into guide means if the machine is fed by hand. It is; however, preferred to associate the curved end 40 of the guide plate with the upper run of a conveyer belt 4| which is supported and driven to discha-rge asuccession of articles into the guide means.

As the articles are so delivered to the guide the bag from the projection 32 and- spring fingers 33 and 34; Thereafter the packaged articles are free to fall to a collection point. It is, however, convenient to provide means for delivering packaged articles to the upper run of a removing conveyor 42" and for this purpose an arcua-te plate 43 carried by the bed is disposed below the filling station I 1 to receive and direct the falling packaged articles to the conveyer.

Simple means is provided for adjusting the mechanism to accommodate articles of various sizes. As herein illustrated, the adjusting meanscomprises spaced nut elements 44" formed at the upper and lower ends of each of the supporting bars 20. engage right-hand threads on upper and lower screws 45, while the nut elements on the other bar 20 engage left-hand threads formed on said screws. The screws are journaled in suitable bearings 46- on the bed. A chain 41- and sprockets 48 connect the two screws for conjoint rotation through manipulation of a finger piece 49-mount ed on oneof the screws; It will be evident that by such manipulation, the supporting bars 20' may be caused to approach or recede from each other and thereby increase or decrease the width of themagazine. Raising or lowering of the blower mechanism through manipulation of the screw 29 effects an adjustment of the" nozzle and the flap-engaging pin and fingers 3'2", 33 relative to the bag. As has been pointed out, the side guides 31 are rigidly affixed to the flanges 2| which, in turn, are a part of the supporting bars 20; Hence, the above described adjustment of the magazine serves also to-vary'the width of the guide means Hi. The base plate 36 of the guide means is of ample width to extend beyond both sides of the-side guides 36 in any of the positions of adjustment thereof. It is advantageous that all of 'these adjustments may bemade from the upper exposed side of the bed since theentirecontrol er the machine is possible from the upper or front side leaving the lower or rear side entirely unobstructed.

- In operation a; succession of articles'maybe delivered to the machine in almost The nut elements on one of the bars 20' succession since very little time is required in opening each succeeding bag by the air blast. Moreover, the fact that a descending article moves from one end of the machine to the other without noticeable pause contributes materially to the speed of machine operation. The mounting of the magazine on the upper side of the bed is advantageous since the magazine is conveniently accessible to the operator in replenishing the supply of bags. A further advantage incident to the disposition of the guide means on the under side of the bed is that the machine may be easily associated with suitable means for automatically feeding and removing articles from the machine.

I claim as my invention:

1. A machine for filling bags comprising, in combination, a generally upright bed supported at an acute angle, a vertical guideway including side walls and a back plate spaced from the under side of said bed, said back plate being adapted to receive articles from a feeding mechanism, spring members secured at the upper ends of said side walls and converging inwardly within said side Walls to center descending articles, said bed having an aperture therein below said guideway, a bag supplying magazine located on the upper side of said bed in register with said aperture for presenting single bags in succession therein, means for holding the single bags so presented, and means for directing an air blast into the mouth of a presented and held bag to open the same, said bag being instantly releasable from said holding means upon the impact of an article therein to allow the enclosed article to fall freely from the machine.

2. A machine for filling bags comprising, in combination, a generally upright bed supported at an angle and having a sizable aperture therein, a magazine on one side of said bed in register with said aperture comprising separately movable sections each including a side wall and a part of the bottom wall, means for adjusting said sections horizontally to adapt the magazine for bags of different sizes, means associated with said magazine for presenting bags in succession in said aperture, air blast delivering mechanism arranged to direct a blast against the mouth of a bag so presented, and means on the side of the bed opposite the magazine for directing the fall of an article into an open bag including side guide members secured to and. horizontally adjustable with said movable sections of the magazine.

ALBERT C. BROWN.

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