US1546069A

US1546069A - Dry-material-feeding machine

Info

Publication number: US1546069A
Application number: US689977A
Authority: US
Inventors: Elmer E Harper
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-02-01
Filing date: 1924-02-01
Publication date: 1925-07-14
Anticipated expiration: 1942-07-14

Description

July 14, 1925. 1,546,069

E. E. HARPER DRY MATERIAL FB/EDING MACHINE Filed Fb.- 1, 1924 2 Sheets-Sheet 2 2492. I i y-5.

IN V/i/VTOR feeding machine.

' ed embodiment of PATENT OFFICE.

man 1. mm, or msas cm, nssoum.

DBY- IA'I'EBIAL-IEEDING MACHINE Application fled February 1, 19M. lerlll Io. 680,91'L' To all whom it may aom'em:

Be it known that I, Emma E. HARPER, a citizen of the United States, residing at- Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Dry-Mate rial-Feeding Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make-and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a'dry-material It is intended for delivering measured quantities of dry material and it is particularly applicable as a machine for delivering measured quantities of dry material to a liquid containing tank or rece tacle.

e illustrated embodiment of the invention is designed for delivering measured quantities of dry materials to a dissolving tank. Any suitable dry material may v fed through the machine so I do not wish to be limited to the exclusion of" any particular material but by way of example, lime or lime and aln mmav be used.

The invention comprehends the inclusion of a hopper having a discharge orifice through which measured quantities of the dry material may be fed on to a receiving table tobe mechanically moved off into the tank or receptacle .by a sweep operated by means for varying the amplitude of move. ment of the sweep so that varying quanti-* ties of the material may be swept off the table by intermittent motions communicated to the sweep by the operating mechanism of the machine; Means is provided for constantly agitating the material in the hopper so that the hopper will not become clogged and if" esired an automatic control may be embodie 'n the machine for controlling the movement of the sweep soas to vary the quantity of dry material fed into the receptacle in proportion to the amount of water to be treated.

The specific construction ofthe illustratthe invention will be described hereinafter. reference being had to the accompanying drawings, in which:

Fig. 11s a perspective view of a drymate'rial feeding machine constructed in accarry a valve 8 duction gear 17 receiving its 'cordance with my invention, parts being.

broken away to better illustrate certain other parts.

Fig. 2 is a cross sectional view through the agitators in elevation,

hopper showing the the table being also shown in section. Fig. 3 is a longitudinal sectional view through the hopper. 1 Fig. 4.- is a detailed view of an automatic feed control attachment, and

Fig. 5 is a plan view of the liquid receptacle.

The hopper 1 is illustrated as supported upon suitable legs or standards 2. The hopper has a constricted bottom provided with an outlet opening 3 through which the material may be fed onto a receiving table to be hereinafter referred to. Depending from the hopper is a skirt 5 through which project

valve supporting rods

6 and 7 which in the form of aSlide. the rods being movable longitudinallv in the skirt to move the valve across the opening 3 to varv the effective port area thereof. Mounted in suitable bearings 9 and 10 is a be rock shaft 11 which extends through the hopper and which carries spaced segmental agitators 12 so that when the rock shaft is rocked the agitators will agitate the material within the hopper so as to prevent it from caking. Between the two sets of segmental agitators illustrated is a depending agitating arm-13 having an sion 14 movable in an are substantially parallel to the bottom of the hopper so that it not only constitutes an'agitator but also a scraper toprevent accumulation of the dry material on the bottom of the hopper. The rock shaft-11 is actuated by a crank arm 15, receiving its motion from a link 15', eccentrically connected to the disk 16 on a remotion from a motor 18 through a ,belt 19 and pulley 26, the latter-being part of the reduction gear. Any suitable reduction gear may be employed, but I recommend a worm gear of appropriate construction and for convenience an electric motor may be employed. The crank arm 14 carries a depending on 21 to which one end of afsweep arm 22 is loosely connected. The sweep arm 1s located between two

lugs

23 and 24 carried by the end 21 and in the lugs are

adjustable stop screws

25 and 26, which may be adjusted in the lugs to va .ry the distance beeen h r ends and sum th sw p arm L-shaped extenis loosely connected to the depending segmental end 21 of the crank 14, it will'be apparent that there is a lost motion connection between the crank arm 14 and the sweep arm 22, hence the amplitude of movement of the sweep arm will be varied by adjusting the

set screws

25 and 26. The sweep arm 22 carries a clamping bar 27 so that a sweep 28 may be clamped to the arm 22 as will be clearly seen by reference ,to Fig. .1.

The sweep moves over a receiving table 29 supported by the rod 30 adjustable in the vertical slots 31 and 32 of the skirt 5 so that-the table may be adjusted vertically with respect to the being obvious that the amount of material deposited upon the table through opening 3 will vary according'to the relative distance between the table 29 and the bottom of the hopper. i

When the motor is operated the gearing will cause a rocking motion to be imparted to the arm 15 to rock the shaft 11. Since the agitators and the scraperfare all rigid with the shaft 11, it is obvious that the material will be agitated in the hopper so it will be in a loose, finely divided condition to feed by gravity through the opening 3, the amount of material fed onto the table 29 depending of course upon the effective port area. of the opening 3 and the position of the table 29 with respect to the bottom of the hopper. The amplitude of movement of the sweep will depend upon-the position of the

set screws

25 and 26 for if the set

screws

25 and 26 arefar apart, it follows there can bean. appreciable movement of the depending end 21 before any movement 1s communicated to the sweep arm 22, but

if the set screws are close together, there will be a greater movement imparted to the sweep arm and consequently a greater amount of material will be swept off the table than would be possible with a slight movement of the sweep. vThe material falling into the tank 4 will be agitated so as to thoroughly co-mingle with the water theremand be e ually dissolved. This effect can be accomphshed by introducing the water through the pipes 33 and 34 which enter the tank 4at a tangent so as to cause the water to swirl about the axis of the ,tank, the discharge from the tank being through a pipe 35 communicating with chamber 35 separated from the main portion of the tank by a partition 36 which extends from the top nearly to thebottom of the tank so that the chamber 35 will be in the middle of a quiescence zone separated from the agitating chamber 37.

It will be apparent that a device constructed in accordance with my invention will -ie d measured quantities of dry material into a liquid receptacle or tank in uniform doses, the size of the dose varying bottom of thehopper, it

according to the adjustments made and if varying the dose 'in proportion to the ;.desired, I may provide anattachment for v amount of water to be treated. The tank 38 may be connected by suitable pi ingto the water'supply to be treated, so t at the float 39 will rise or fall in proportion to the flow of waterv-to be treated. In the tank is a float 39 connected to a lever arm- 40 by a connection 41 the lever arm being adapted to rock about its pivot 42 upon a The lever arm rise and fall of the float 39.

for a pin 48 extending through the lower end of the sweep arm 32. The adjusting

screws

25 and 26 will be set to give the maximum stroke to the spring swee arm 22 and the sweep is set to deliver t e required amount of chemical when the float -39'is at its greatest height and the cams .are farthest apart. If the water level is lowered, the float 39 will drop, bringing the cams v46 and 47 closer together, thus reducing the are through which thesweep may travel. This may continue until the travel of the sweep is entirely stopped by the cams. action will take place.

I have specifically described the preferred embodiment of my invention, but I do not wish to be limited to the exactdetails of construction shown, but reserve the right to make such changes in form, proportlon and minor details of construction as properly come within-the scope of the appended claims.

What .I claim and desire to secure by Letters-Patent is:

1. In a machine for feeding dry material, a hopper havin a discharge opening in its bottom, a tableielow the hopper to receive carries a geared segment 43 which meshes When the float rises the opposite material from the hopper, a horizontal shaft in the hopper, a vibratory agitator carried by the shaft and a rocking sweep carried by the shaft, said sweep including a downwardly projecting arm having a right angularly projecting blade movable over the face of the table.

2. In a machine for feeding dry material, a hopper having a discharge opening in its bottom, a valve for effecting the port area of the opening, a table below the hopper in line with the openin to receive material from the hopper, a roc shaft in the hopper, an agitator in the hopper carried by the rock shaft and a vibrating sweep arm connected to the shaft and movable over the table for moving the material off the table. 3. In a machine for feeding dry material,

a hopper having a discharge opening in its bottom, a valve for varying the effective port area' of the opening, a table below the hopper to receive material discharged through the opening, agitators in the hopper, a rock shaft for operating the agitators, a crank arm on the rock shaft, means carriedby the rock shaft for supporting a. sweep arm, a sweep arm having a lost motion connection with said supporting means whereby the supporting means may have certain initial movement before actuating the sweep arm and a sweep carried b the arm for discharging the material the table.

4. In a machine for feeding dry material, a hopper having a discharge opening, a rock shaft transversely of the hopper, agitators connected to the rock shaft, one of which has a portion movable in an are past the opening, 'a rock shaft operating crank arm fast to the rock shaft, means for swinging the crank arm back and forth to rock the shaft, a segment carried by the shaft, a

sweep arm pivoted to the segment, adjustable stops on the segment on opposite sides of the sweep arm, a table below the hopper in line with the opening and a sweep carried by the sweep arm.

5. In a machine for feeding dry material,

a hopper having a discharge opening, a rock shaft transversely of the hopper, agitators connected'to the rock shaft, one of which has a portion movable in an are past the opening, a rock shaft operating crank arm fast to the rock shaft, means for swinging the crank arm back and forth to rock the shaft, a segment carried by the shaft, a sweep arm pivoted to the segment, adjustable stops on the segment on opposite sides of the sweep arm, a table below the hopper in line with the opening and a. sweep carried by the sweep arm, and a valve for varying the effective port'area of the opening.

6. In a machine for feeding dry material, a hopper having a discharge opening in its bottom, a table below the; opening. onto which the material may be fed, a sweep for ELMER E. HARPER.