Title:
Sack holder
United States Patent 2455729


Abstract:
The invention relates generally to sack holders for holding sacks in open upright position for filling, and more particularly to a novel and improved sack holder having means for quickly attaching sacks of different sizes. The operation of filling sacks in a warehouse or mill or loading station...



Inventors:
Lawrence, Byers
Application Number:
US72234147A
Publication Date:
12/07/1948
Filing Date:
01/16/1947
Assignee:
Lawrence, Byers
Primary Class:
Other Classes:
24/489, 248/100
International Classes:
B65B39/08
View Patent Images:
US Patent References:
1055745N/A1913-03-11
0841621N/A1907-01-15
0310210N/A1885-01-06
0199705N/A1878-01-29
0146117N/A1873-12-30
0090344N/A1869-05-25



Foreign References:
GB212681A1924-03-20
Description:

The invention relates generally to sack holders for holding sacks in open upright position for filling, and more particularly to a novel and improved sack holder having means for quickly attaching sacks of different sizes.

The operation of filling sacks in a warehouse or mill or loading station is a time-consuming one, and it is therefore very desirable to provide a sack holding device which is adapted to detachably hold various sizes of sacks in open position for filling, and on which the sacks may be quickly and easily mounted.

Various prior sack holding constructions have been devised for holding sacks in open position while filling them with feed and grain and other produce, or with comminuted materials such as cement, fertilizer, etc.

However, these prior constructions have had a number of disadvantages. Certain of them have been too complicated and expensive to make, while others have been too heavy or cumbersome for unskilled persons to use, and still others have not been easily adjustable for different sizes and lengths of sacks, or have required too much time for attaching and detaching the sacks.

Accordingly, it is a general object of the present invention to provide a new and improved sack holder which overcomes the disadvantages of prior constructions.

More specifically, it is an object of the present invention to provide an improved sack holder which is readily adapted for holding sacks of various sizes in girth.

Another object is to provide an improved sack holder which is quickly adjustable to accommodate sacks of various lengths.

Another object is to provide an improved sack holder which has novel hopper means for quick attachment to the mouth of a bag.

A further object is to provide an improved sack holder which is portable.

Another object is to provide an improved sack holder having a removable hopper adapting the holder to be used as a hand truck.

A still further object is to provide a novel and improved sack holder which is simple and inexpensive in construction, light in weight, and easy to use and handle by unskilled persons.

These and other objects are accomplished by the parts, constructions, arrangements and combinations which comprise the present invention, the nature of which is set forth in the following general statement, and a preferred embodiment of which is set forth in the folowing description and illustrated in the accompanying drawings, and which is particularly and distinctly pointed out and set forth in the appended claims forming part hereof.

In general terms, the improved sack holder S comprising the present invention may be stated as including a hopper which is slidable vertically on a normally upright standard and which may be quickly removed from the standard, there being a spring-held friction clamp on the hopper for normally holding the hopper in adjusted position, and prongs at the base of the hopper for engaging the mouth of a bag in open position, a gravity latch being provided on the hopper for gripping the fabric of the bag around one of the prongs, and wheels at the base of the standard for moving the sack holder about.

Referring to the drawing forming part hereof in which a preferred embodiment of the invention is shown by way of example; 2 Figure 1 is a front elevation of the improved sack holder in position to hold a sack; Fig. 2 is a side elevation thereof showing a sack mounted in open position thereon; Fig. 3 is a fragmentary sectional view as on 5 line 3-3, Fig. 2; Fig. 4 is a transverse sectional view as on line 4-4, Fig. 3; Fig. 5 is a fragmentary rear elevational view of the hopper detached from the standard; and Fig. 6 is a fragmentary side elevational view similar to Fig. 2 showing an extension attached to the hopper for filling a paper sack.

Similar numerals refer to similar parts throughout the several views of the drawing.

The improved sack holder preferably includes a ,base which may be made up of side angles 7 and a rear transverse angle 8 extending between and secured to the side angles, as by welding.

As shown transverse plates 9 may extend across the tops of the side angles 7 and are preferably secured thereto to form a platform on top of the base. If desired suitable bracket plates 10 may be secured to and extended rearwardly from the side angles 7 for supporting a transverse shaft I , on which a pair of wheels 12 is mounted for rollably supporting the bag holder when it is tilted rearwardly.

At the central portion of the transverse angle 8 an upright standard 13 is mounted, and the standard may consist of two angles 14 secured to each other in side-by-side abutting relation, and secured at their bottom ends to the transverse angle 8, as by welding. As shown in Figs. 1 and 2, angle braces 15 are secured at their lower ends -td intermediate portions of the angles 7, and are secured at their upper ends to the rearwardly extending flanges of the upright angles 14. Thus, the standard is T-shaped in cross section, as best shown in Fig. 4, and the laterally extending legs 14a provide a continuous track on which to slidably and removably mount a hopper. Preferably, a handle 15a is attached by welding to the abutting legs of the angles 14 at or near the tops thereof for facilitating tilting the standard rearwardly to rollably support it on the wheels 12.

The improved hopper indicated generally at 16 is preferably made of sheet metal and is rectangular in cross section with a base portion 1.T and an outwardly flared upper mouth portion 18 having suitable handles 19 on the sides thereof: The means for slidably and removably mounting. the hopper 16 on the standard 13 preferably includes a U-shaped bracket mounted on the rear walls of the hopper, and having side plates with flanges 21 at their inner ends secured as by welding to the hopper, with metal plates or strips 22 extending between the rear ends of the plates 20 at their top and bottom edges. These metal strips 22 are provided with U-shaped channels or guides 23 at their ends, which are adapted to engage around the outer edges of the legs 14a of the standard to provide a sliding- mounting for the hopper 16 on the standard. Since the legs 14a of the standard extend continuously, to the top, the hopper 16 is easily removed by moving it upwardly until the channels 23 clear the legs 14a.

The. novel friction clamp for normally locking the hopper in adjusted position on the standard preferably includes a latch bar 24 pivoted'to the lower strip 22 at one side thereof, with the. outer end portion of the lever extending through a notch 25 formed in the opposite side wall 20 and said lever having a reverse flange 26 onits outer end engaging around the outer edge of one of the angle legs 14a. A tension spring 27 has its.lower end connected to an intermediate portion of the lever 24 and its upper end connected to the upper strip 22 so that the spring normally urges the latch bar 24 upwardly and causes the reverse flange 26 to wedgeably and frictionally engage the leg 14a of the standard and lock the hopper to the standard in adjusted position.

A release lever 28 is secured at its bottom-end to the inner end of the lever 24 and extends upwardly therefrom between the side walls 20 of the mounting bracket and behind the upper strip 22. When it is desired to release the latch 24 from locking engagement with the standard, the upper end of the release lever 28 is rocked or moved to the left as indicated in Fig. 3, or to the right as indicated in the rear elevation in Fig. 5.

Such movement depresses the outer end 26 of the lever 24 about its pivot and releases it from engagement with the standard.

The means for engaging the mouth of the sack and holding it in open position around the base of the hopper preferably includes a front rod 30 soldered or welded to the front wall of the base of the hopper and a rear rod 31 similarly secured to the rear wall of the hopper. The ends of the rods 30 and 31 project slightly beyond the side walls of the base of the hopper and are slightly bent upwardly to form prongs 30a and 3 la which are adapted to engage the fabric of the mouth of the sack S for holding it in open position around the hopper so that grain or produce or any other material can be filled into the sack through the enlarged or funnel mouth 18 of the hopper.

A gravity latch 32 is preferably pivoted at one corner of the hopper base and has a depending arm 33 which is adapted to drop over and clamp or grip the fabric of the bag which is hooked over the adjacent prong 30a. In this way, the fabric of a sack mouth which is larger than the hopper base can be overlapped under the gravity latch 32 and may then be held or gripped by the engagement of the arm 33 over the adjacent prong.

In Fig. 6 there is shown a sheet metal extension 35 which depends downwardly from the hopper base 17 and is tapered inwardly at its bottom end as at 36 for receiving the upper ends of paper bags of various sizes. The extension 35 preferably telescopes over the hopper base at its upper end, and may be secured thereto by hooks 37 Which are pivoted on the extension and engage over the prongs 30a and 31a. Thus, the hopper 16 can be used to fill various sizes of paper sacks by holding the upper end of the sack over the bottom of the extension 35 and pouring the material into the open mouth of the hopper.

In using the improved sack holder for filling large sacks of various sizes with.a variety of materials, the sack is quickly attached to the base of. the hopper by hooking, the fabric of the mouth of the sack over the prongs 30a and 31a, and lapping the slack material and gripping, it under the gravity latch 32. The material is then quickly poured through hopper mouth 18 to fill the sack, and before or after, filling the sack-holder may be quickly and easily moved from place to place by grasping the handle 1a and tilting the holder slightly rearwardly so that it is rollably supported on the wheels 12. The sack S is quickly and easily removed by lifting the latch 32 and uni5 hooking the bag mouth from the prongs 30a and 3-1 a and a sack of different length is quickly accommodated by moving the release lever 28, to release the lock flange 2& and adjusting the hopper: 16 up or down on the standard to accommodate the length of the bag. When the hopper is adjusted to the desired position, the handle 28 is released and -the spring 27-automatically locks the hopper in the adjusted position. If it is desired to use the-improved sack holder temporarily. as a hand truck, the hopper 168is quickly removed by. holding the lever 28 in released: position and sliding the hopper: upwardly until:the strips 22 clear the top of the standard. 50 Accordingly, the improved sack holder is inexpensive and light in weight- so-as to facilitate easyhandling and portability; and is adapted.for quickly and easily accommodating sacks of various lengths and girths so as to provide for filing a large number of various sizes of sacks in, the shortest possible time.

In the foregoing description, certain terms have been used for brevity, clearness and understanding, but no unnecessary limitations are to be '0 implied therefrom beyond' the requirements of the prior art, because such words are used for descriptive purposes herein' and are intended to be broadly construed.

Moreover, the embodiment of the improved G5 construction illustrated and described herein is by'way of example, and the scope of the present invention is not limited to the exact details of construction.

Having now described the invention, the construction, the operation and use, and a preferred embodiment thereof, and the advantageous new and useful results obtained thereby; the new and useful constructions, and reasonable mechanical equivalents thereof obvious to those skilled in the art, are set'forth in the appended claims. I claim: 1. A sack holder having a base, wheels at one end of said base for rollably supporting the same, a standard supported on said base adjacent to said wheels and having a smooth edge extending throughout its length, a handle at the upper end of said standard, a hopper slidably and removably mounted on said standard, a friction clamp on said hopper, spring means normally holding said clamp in frictional locking engagement with the smooth edge of said standard at any point, a release lever connected to said clamp, means on the hopper for engaging the mouth of the sack in open position, and a gravity latch for gripping the sack against said engaging means.

2. In a sack holder having an upright standard and a hopper slidable on said standard, said standard having a smooth edge extending throughout its length, means on said hopper for engaging the mouth of the sack in open position, a gravity latch for gripping a portion of the sack against said engaging means, a latch bar pivotally mounted on said hopper for frictionally engaging the smooth edge of said standard at any point along the same, a spring urging said latch bar into frictional engagement with said smooth edge for locking the hopper in adjusted position, and a release lever connected to said latch bar at the end thereof opposite to its pivotal mounting.

3. In a sack holder having an upright standard and a hopper slidable on said standard, said standard having a smooth edge extending throughout its length, means on said hopper for engaging the mouth of the sack in open position, a hopper extension for extending into the mouth of a paper bag for filling the same, latch means for detachably mounting the upper end of said extension on said sack engaging means, a latch bar pivotally mounted on said hopper for frictionally engaging the smooth edge of said standard at any point along the same, a spring urging said latch bar into frictional engagement with said & smooth edge for locking the hopper in adjusted position, and a release lever connected to said latch bar at the end thereof opposite to its pivotal mounting.

4. A sack holder having a base, a standard supported on said base and having a smooth edge extending throughout its length, a hopper slidably and removably mounted on said standard, a friction clamp on said hopper, spring means normally holding said clamp in frictional locking engagement with the smooth edge of said standard at any point, a release lever connected to said clamp, means on the hopper for engaging the mouth of the sack in open position, and a gravity latch for gripping the sack against said engaging means.

LAWRENCE BYERS.

REFERENCES CITED The following references are of record in the 25 file of this patent: UNITED STATES PATENTS Number 90,344 146,117 199,705 310,210 841,621 1,055,745 Name Date Dare ------------ May 25, 1869 Wilkerson .---.... . Dec. 30, 1873 Hatfield ----------- Jan. 29, 1878 Liedel -------------- Jan. 6, 1885 Campbell --------- Jan. 15, 1907 Harrison ---------- . Mar. 11, 1913 FOREIGN PATENTS Number Country Date 212,681 Great Britain ------ Mar. 20, 1924