US1069848A

US1069848A - Bag-filling machine.

Info

Publication number: US1069848A
Application number: US55057710A
Authority: US
Inventors: Benjamin F Brown
Original assignee: BROWN BAG FILLING MACHINE Co
Current assignee: BROWN BAG FILLING MACHINE Co
Priority date: 1910-03-21
Filing date: 1910-03-21
Publication date: 1913-08-12
Anticipated expiration: 1930-08-12

Description

B. F. BROWN.

BAG FILLING MACHINE.

APPLIGATION FILED MAR. 21, 1910.

1,069,848o Patented A g. 12, 1913.

2 SHEETS-SHEET l.

A 1 er; 'cawmf'jilluvf/ WW 7 COLUMBIA PLANDGRAPH c0.. WASHINGTON. n. c.

B. F. BROWN.

BAG FILLING MACHINE.

APPLIOATION FILED MAR. 21, 1910.

1,069,848., Patented Aug. 12, 1913.

2 SHEETSSHEET 2.

COLUMBIA PLANOGRAPH c0., WASHXNGTON, D. c.

BENJAMIN F. BROWN, OF FITCHBURG, MASSACHUSETTS, ASSIGNOR TO BROWN BAG FILLING MACHINE COMPANY, OF FITCHBUBG, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

BAG-FILLING IlIAOI-IINE.

To all whom it may concern Be it known that I, BENJAMIN F. BROWN, a citizen of the United States, and a resident of Fitchburg, county of Worcester, and State of Massachusetts, have invented an Improvement in Bag-Filling Machines, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to an improvement in a bag-filling machine in which fiat paper bags or envelops are placed in a stack and fed forward to a bag filling mechanism. Such a machine is exemplified by the patent to Cummings No. 539,171, granted May 14, 1895, or by the patent to Rulison No. 936,169, granted October 5, 1909.

In machines of this type the bag-presenting mechanism comprises a generally horizontally-arranged guide-box of a more or less skeleton form in which the bagsare placed vertically, and in which they are forced toward the open or discharge end of the guide-box by a follower. It is common in machines of this type to provide for a bodily movement of the guide-box just prior to the opening of the bag to be filled and a retraction of the guide-box during, or after, the filling of the bag to aid in the removal of the endmost bag from the guide-box.

The follower carried by the guide-box is usually pressed forward with respect to the guide box by a weight connected therewith. In the case of a machine like that shown in the Cummings patent the movement of the guide-box disturbs the action of the follower and, heretofore, has reduced the pressure of the weight upon the follower at the time when it is most needed.

The present invention provides a means for securing continual pressure of the weight upon the follower and an increase of the effective pressure each time the guide-box is given its bodily movement. It also secures the momentary release or diminution of pressure upon the follower at the time of the retraction of the guide-boX to cause the disengagement of the bag.

The invention will more fully appear from the accompanying description and drawings and will be particularly pointed out in the claims.

The drawings in Figures 1 and 2 show so much of a machine of the type shown in the Specification of Letters Patent.

Patented Aug. 12,1913.

Serial No. 550,577.

said patent to Cummings, 539,171, and in Figs. 3 to 6 inclusive, so much of a machine of the type shown in the said patent to Rulison, 936,169, as is necessary to disclose in connection therewith the present invention.

In the drawings Fig. 1 is a side elevation of a portion of a bag-filling machine of the type shown in the said Cummings patent with the improvements of this invention added thereto; Fig. 2 is a top plan view partially in cross section of the base plate, follower plate, and other parts of the machine; Fig. 3 is a side elevation of a portion of a bag-filling machine of the type shown in the said Rulison patent with the improvements of this invention added thereto; Fig. 4: is a top plan view of portions of the machine shown in Fig. 3; Figs. 5 and 6 are detail views illustrating the means for adjusting one of the cord guides or pulleys shown in Fig. 3.

Referring first to the construction of the machine shown in the said Cummings patent it will be seen that a portion of the frame of the bag-filling machine is shown at 1, and it is unnecessary to show any of the details of the bag-filling and other mechanisms of the machine not specifically involved herein. These mechanisms may be of any suitable type, such, for example, as shown in the said Cummings patent.

The bag-presenting mechanism by which the stack of bags is presented so as to place the endmost bag of the stack in position to be filled is shown as of generally similar construction to that shown in the said Cummings patent. It involves a carriage or bed plate 2 mounted to have a longitudinal movement toward and from the bag-filling and other mechanisms of the machine, and to secure this movement it is shown as sup ported by the two links 3 and 4 pivoted at their lower ends at 5 and 6, respectively, to the frame of the machine. The link 4 is prolonged above its pivotal connection to the bed plate 2 and provided with a roller 7 entering the groove 8 in a cam 9 driven by suitable connections with the driving mechanism of the machine and securing the longitudinal movement of the bed plate.

The bed plate 2 supports and carries the guide-box which receives and holds the stack of bags to be filled. The guide-box as shown is of a skeleton form comprising a bottom plate 10 secured to the bed plate 2, a frame 11 carrying side plates 12 and end side plates 13, the latter of which are provided with suitable stops, such as spring lingers 1 1,

which serve to retain the side edges of the endmost bag until it is forced past them, or

otherwise removed from the guide-box in the operation of the machine.

The follower by which the bags are pressed forward against the pins 1% may' take any suitable form and may comprise a 1 standard 15 mounted, guided, and sliding upon the bottom plate 10.

In order to press the follower forward a depending weight 16 is connected thereto by means of a suitable flexible connector, herezontally arranged pulleys mounted upon:

the bed plate 2. The cord extends between these cord guides rearwardly of the guide box and passes around a third cord guide 20 herein shown as a pulley which is mounted upon or carried by some fixed portion of the machine. Herein the cord guide 20 is shown as carried by a bracket 21 bolted upon the standard of the machine at 22. A suitable cord guide 23, arranged in a vertical plane, serves to change the run of the cord from the horizontal to the vertical. The cord is shown as attached to the follower at 24-. It will now be seen that when the guide-box is moved forwardly by the action of the cam 9 the distance between the cord guide 20 and the pair of cord guides 18 and.l9 will be lengthened, and the weight 16 will be raised twice this distance. The result is that upon the forward movement of the guide-box the inertia of the weight has to be overcome, and the weight lifted through a distance equal to twice the move.- ment of the carriage, thus at once not only maintaining but actually and; materially increasing the pressure of the follower upon the stack of bags at the very time when it is most necessary. The invention, therefore, prevents any diminution of the pressure of the follower, maintains all the normal pressure, and even materially increases the pressure at the required time.

The bags in the guidebox are, therefore,

held firmly up against the pins and pressed 1n t0 positlon for the hag-filling mechanism with accuracy and posltiveness. Moreover,

upon the retraction of the guide-box the pressure of the weight upon the follow-er is momentarily released or diminished, thus enabling the more ready disengagement of the bag from the discharge end of the guide-box. The same general result is secured in the type of machine shown in the patent to Rulison, and in connection with which the invention is illustrated in Figs. 3 to 6 inclusive. the bag-presenting mechanism comprises the same generally horizontallyarranged guide-box of a more or less skeleton form in which bags are placed vertically and in, which they are forced toward the open or discharge end by a follower. In this machine the bodily movement of the guide-box with respect to the frame is a swinging movement and in a more or less vertical direction.

In the machine shown in Figs. 3 to 6 inclusive, ,a portion of the frame of the bagfilling machine is shown at 100 and at 300, ,and it is unnecessary to show any of the details of the hagfilling and other mechanisms of the machine not specifically involved herein. These mechanisms may be of any suitable type such, for example, as shown in the said Rulison patent.

The bag-presenting mechanism by which the stack of bags is presented so as to place the endmost bag of the stack in position to be filled through the funnel 32 involves the support 65, the curved bottom plate 71, and the curved side plate .67 pivoted at 60.0. This bag-presenting mechanism is supported upon and carried by the lever 60 fulcrumed on the frame 1 at 601 and counter balanced by the weight .61. The lever 60 is operated from the .cam 81 by means of the intermediate connections, including the lever 87 and the lever .88, so that the bag.- presenting mechanism is moved in a vertical plane back and forth with respect to the frame.

The follower, by which the bags are pressed forward against the retaining plate 74 at the discharge end of the guide-box, comprises the plunger 75 provided with a spring arm 76 hearing against the rear of the stack of bags and mounted on the

side plates

67 and 80 1 so that the follower presses against the bags moving with the side plate 67 about the pivot 600.

In order to press the follower forward and secure the advantages of this invention, a depending weight 80 is connected thereto by means of a suitable flexible connector, herein, for convenience, referred to as a cord 800. A cord guide 803 is mounted on a fixed portion of the frame, as 300, beneath the follower. A cord guide 802 is mounted on the movable lever .60, carrying the guidebox, and deflecting cord guides, such as cord guide 801, are provided by which the cord is carried to some portion of the machine from which the weight 8.0 may be hung without interference. It will now be seen that when the guide-box is moved upwardly by swinging the forward end of the lever 60 upwardly through the operation of the cam 81 that the distance between In machines of this typev the

cord guide

802 and 803 will be lengthened and the weight 80 will be raised twice this distance. The same results are, therefore, secured as in the previous construction described.

Upon the upward movement of the guidebox the inertia of the weight has to be overcome and the weight lifted a distance equal to twice the movement of the carriage, thus at once not only maintaining but actually and materially increasing the pressure of the follower upon the stack of bags at the very time when it is most necessary. Upon the commencement of the downward move ment of the forward end of the lever 60 the pressure upon the follower is momentarily released or diminished, allowing the more ready discharge of the bag.

Means may be provided for adjusting the cord guides upon the movable support for the guide-box so as to vary the extent of the movement of the weight upon the movement of the guide-box and thus adjust the effect of the weight upon the follower in the construction shown in Figs. 3 to 6 inclusive. Such an adjustment has been illustrated in Figs. 5 and 6, wherein the pivot 805 for the cord guide 802 is shown as a set screw passing into a nut 806, held in a vertical slot 808 opening in the slit 807 in the lever 60. The end of the set screw abuts against the wall of the slot so that the set screw can be adjusted at any point toward or from the fulcrum 601, thus varying the distance the weight 80 is raised and lowered upon the movement of the lever 60.

Having fully described my invent-ion what I claim as new and desire to secure by Letters Patent is:

1. In a machine of the character described, a frame, a guide-box movably mounted on said frame and means for reciprocating it thereon, a follower carried by and movable forward to and backward from the discharge end of the guide-box, means for pressing the follower forward with respect to the guide box, and means for increasing the said forward pressure of the follower upon the movement of the guide-box in one direction on the frame.

2. In a machine of the character described, a frame, a guide-box and means for reciprocating it on said frame, a follower carried by and movable forward to and backward from the discharge end of the guide-box, means for pressing the follower forward with respect to the guide box, and means for momentarily releasing or diminishing the said forward pressure upon the retraction of the guide-box with respect to the frame.

3. In a machine of the character described, a frame, a guide-box and means for reciprocating it on said frame, a follower carried by and movable forward to and backward from the discharge end of the guide-box, means for pressing the follower forward with respect to the guide box, and means for preventing diminution of the said forward pressure of the follower upon the forward movement of the guide-box.

4. In a machine of the character described, a frame, a guide-box and means for reciprocating it on said frame, a follower carried by and movable forward to and backward from the discharge end of the guide-box, a weight connected to said follower to force it forwardly with respect to the guide box, and means for causing the follower to lift the weight upon the movement of the guide-box in one direction on the frame thereby increasing the said forward pressure of the follower.

5. In a machine of the character described, a frame, a guide-box mounted to reciprocate longitudinally with respect to said frame, a follower carried by and sliding longitudinally of said guide-box, means for pressing the follower forwardly in and with respect to the guide-box, and means for increasing the said forward pressure of the follower upon the forward movement of the guide-box.

6. In a machine of the character described, a frame, a guide-box mounted to reciprocate longitudinally with respect to said frame, a follower carried by and sliding longitudinally of said guide-box, a weight connected to said follower to force it forwardly in and with respect to the guidebox, and means for causing the follower to lift the weight upon the forward movement of the guide-box thereby increasing the said forward pressure of the follower.

7. In a machine of the character described, a frame, a guide-box movably mounted on said frame, a follower carried by and movable forward to and backward from the discharge end of the guide-box, a cord guide supported to move with the guide-box, a second cord guide supported on the frame, a depending weight and a cord extending therefrom to the follower, the said cord passing around the two cord guides whereby when the guidebox is moved in one direction on the frame the weight is raised and the pressure of the follower not only maintained but increased, and whereby upon the opposite movement of the guide-box the pressure on the follower is momentarily released or diminished.

8. In a machine of the character clescribed, a frame, a guide-box mounted to move longitudinally with respect to said frame, a follower carried by and sliding longitudinally of said guide-box, a pair of cord guides supported to move with the guide-box, a cord guide in the rear of said pair of cord guides and supported from the frame, a depending weight, a cord extend- In testimony whereof, I have signed my ing therefrom to the follower, the said cord name to this specific-anon 1n the presence of between sald pair of cord guides extending two subscrlblng witnesses.

around the third cord guide whereby when BENJAMIN F. BROWN. 5 the guide-box is moved forwardly the Witnesses:

weight is raised and the pressure of the fol- FRANK BARTER,

lower not only maintained but increased. HARRISON BAILEY Copies of this patent may be obtainedfor five cents each, by addressing the Commissioner of latents, Washington, D. G.