US1766625A - Reagent feeder - Google Patents

Description

June 24, 1930. J. F. GEARY REAGENT FEEDER 2 she bsfsheet 14 Filed Dec. l, 1925 `lune 24, 1930. J, F, GEARY 1,766,625

REAGENT FEEDER Filed Dec. ll 1925 2 Sheets-Sheet 2 Patented 24, i939 JAMES F. GEABY, F SALT LAKE CITY, UTAH REAGENT 'FEEDER Application filed December 1, 1925. Serial No. 72,595.

.ine present invention relates to reagent below the level of iiuid in the tank, as shown feeders and more particularly to feeders for in the dotted line position of Fig. 2, and is ilelivering predetermined quantities of rethen raised, the bucket being guided by the agents at regular intervals. tracks 14. As it nears the top of its stroke,

L; The principal object of the present inventhe stud 24 in following the curved portion 55 tion is to provide reagent feeder which is of the track causes the bucket to be tipped adapted to deliver accurately determined into the position shown in full lines, to permit quantities of one or more reagents and which the iiow of its contents into the spout 20, from may be readily adjusted to vary the rates or which they are directed into a funnel 32 to be amounts of delivery of the various reagents conveyed to the desired point. 60 separately or with relation to one another. Reciprocating motion is imparted to the .,Vith this and other objects in view, as will bucket support 28 by means of a pitman 34 hereinafter appear, the present invention con pivotally connected at 86 to the bucket supin the reagent feeder hereinafter deport and connected at its upper end with a scribed and particularly defined in the claims. crank disk 38 at the periphery of the latter. 65 lin the accompanying drawings, Figure lis he length of the pitman may be adjusted a front elevation of reagent feeder embodyby a turn-buckle 40. The crank disk associing the features of the present invention; and ated with each tank is supported on a stud 42 Fig. 2 is a sectional elevation of the apparajournaled in a bearing 44, vand is urged by shown in Fig. 1. a coil spring` 46 against a rotating friction 70 The illustrated embodiment of the invendriving disk 50. Each crank disk 38 is protion consists of a reagent feeder comprising vided with a counterweight 52 opposite the a plurality of tanks 4 from which predeterpitman connection. The various driving mined quantities of reagents are delivered by disks 50 associated with the different feeders means of reciprocating buckets indicated genare splined on a driving shaft 58 which is erally The tanks are supported in a journaled in bearings 54 and 56 and is rotated 'framework 8 mounted on a concrete foundaby a motor 58 through a worin drive. `The tion 10. The level of liquid in each tank is shaft 53 may be supported at points intermeniaintaincd constant by means of a float 12 diate its ends by pillow blocks 59. Each driveo connected. with any suitable form of valve ing disk 50 has secured to it a grooved disk 60 8U mechanism. Secured to the framework are a within which is received a yoke 62, the yoke plurality of bucket guides 14, one of which being retained in any adjusted position by a entends into each tank. Each guide includes connection with a rod 64 which extends pair of tracks 16 vertically disposed within through the bearing block 44 and which is 25 and extending slightly above the top of the held in place by a set screw 66. By this means 55 tank and curved at 1'? into a horizontal porany or all of the driving disks may be moved tion 18 directly above a spout 2O within which to any adjusted position with relation to the the contents are to be discharged. rlhe bucket crank disks 88 to drive the latter at any de- G is provided with an integral ear 22 to resired speed. The speeds may be adjusted Ceive a stu-fl 24, which is received between the relatively to one another without stopping the pair of tracks 16. Above the stud 24 the operation of the feeder so that the amounts bucket is provided with an extended lip 26 of reagents delivered by the various buckets over which the contents pass in being dismaybe proportioned by controlling the rapidcharged into the spout 20. The bucket is pivity of the dumping so as to give the correct otally mounted on a support 28 which is mixture of reagents desired to be used in the 95 adapted to slide freely over a rod 30 eXtendreaction. ing into the tank and secured between the The adjustment provided by the turnbottom of the `guide member 14 and a part of buckle 40 on each pitman determines the the framework. Upon vertical reciprocation amount of upward movement of the bucket of the support 28 the bucket is first submerged to dumping position. Thus by extending the ico length of the pitman the bucket will be lifted to a less height and therefore the tipping of the bucket will be less, because the stud Q4 will not have advanced so far around the curve 1T in the track 16. By this means the amount delivered by each dump may be controlled, to effect a further control of the proportion of the delivery of each reagent.

The formation of the bucket is such that an accurate quantity of reagent is delivered at each dumping operation to the spout 20. Provision is made for preventing entrance of liquid into the spout except from the interior of the bucket, thus eliminatingr inaccuracy due to dripping of liquid from the exterior of the bucket. The ear 22, which is formed integral with the bucket, and the stud 24, which extends across the bucket directly below the lip, serve to catch any drops of liquid Which tend to flow down the exterior side walls of the bucket and direct them back into the tank. Moreover, as shown in Fig. 2, the upper extremity of the lip when the bucket is in tilted position lies directly above the inner edge of the spout 20, so that all drippings from the bucket tend to drop outside the spout and the spout receives only the contents of the interior of the bucket. The curvature of the track at 1T is substantially on a radius, of which the upper interior extremity of the spoilt :'20 is the center, so that this condition obtains for any final position of the spout independent of the adjustment of the length ofthe pitman 34.

It will be observed that the positive reciprocating movement imparted to each bucket by its corresponding pitman provides not only for a positive submergence of the bucket but also for an accurate lifting of the bucket through an accurately predetermined stroke. The amounts of the various reagents discharged may be regulated by adjusting the lengths of the pitmen and speeds ot' the crank disks. the former adjustment serving to regulate the quantity of each dump, and the latter to vary the interval between successive dumps. Accordingly, an accurate feed of predetermined relative quantities of the different reagents at regular timed intervals is assured.

Having thus described the invention, what is claimed is:

1. A reagent feeder comprising a plurality of veltically reciprocating buckets each adapted to feed a portion of the contents from a tank, means for tipping each bucket as it approaches the top of its stroke, i'neans for reciprocating each bucket through a predetermined stroke, and means for relatively varying the speeds of the different buckets with respect to one another.

2. A reagent feeder comprising a plurality of tanks, a bucket for each tank adapted to convey a portion of the contents from its corresponding tank, means for tipping each bucket as it approaches the top of its stroke. means for reciprocating the buckets in timed relation to each other, and means for relatively varying the strokes of the buckets to vary the amount of tipping and the relative discharge of their contents.

3. A reagent feeder comprising a plurality of tanks, a bucket for each tank, means for vertically reciprocating the buckets in timed relation to one another` means for tipping each bucket at the top of its stroke, and means for varying the relative positions of the various buckets with respect to one another.

iJf. A reagent feeder comprising a tank, a bucket, a support on which the bucket is pivotally mounted, means for reciprocating the bucket comprising a crank and a. pitman connecting the crank with the bucket, and adjustable means for rotating the crank at various speeds.

5. A reagent feeder comprising a tank, a bucket, a support on which the bucket is pivotally mounted, means for reciprocating the bucket comprising a crank and a pitman con` necting the cran with the bucket, and adjustable means for rotating the crank at various speeds, a guide for the bucket having provision for tipping it as it approaches the fop ot its stroln, and means for adjusting the length of the pitman to vary the amount of tipping of the bucket.

A reagent feeder' comprising a plurality of tanks, a4 bucket associated with each tank, a support for each bucket, a guide for each bucket having provision for tipping the bucket as it approaches the top of its stroke, means for reciprocating each bucket coinprising a plurality of cranks and pitmen connecting the cranks with the buckets, a rotatable shaft, means for driving the cranks from the shaft, and means for relatively adjusting the speeds of the various cranks.

7. A reagent feeder comprising a plurality of tanks, a vertically reciprocating bucket associated with each tank for conveying therefrom a portion of its contents, a rotatable shaft, a friction disk for each bucket having a crank, a pitman connecting the crank with the bucket, and a rotatable shaft, friction means on the shaft for driving the friction disks, and means for adjustim'r the friction means to vary the timing of the buckets and to vary the speeds at which the buckets are reciprocated.

8. A reagent feeder comprising a tank, a bucket guide extending into the tank, a bucket having an extended lip and a stud engaging with the guide and disposed below the lip, means for reciprocating and tipping the bucket, a spout directly under the bucket when the latter is in tipped position, the stud serving to catch drippings from the exterior of the bucket and return them into the tank to prevent passage thereof into the spout.

9. A. reagent feeder` comprising a tank, a bucket, a guide for the bucket havin@4 provision for tipping the bucket at the top of its stroke, means for reciprocating the bucket through a predetermined stroke, means for adjusting the stroke to adjust the discharge of the bucket, and means for varying the speed of movement of the bucket.

10. fr reagent feeder comprising a plurality of tanks, a bucket for each tank, means for reciprocating each bucket through a predetermined stroke and for tipping each bucket at the top of its stroke, means for relatively varying the strokes of the various buckets to adjust their discharges with respect to one another, and means for relatively varying' the speeds of the buckets.

l1. ifi reagent feed r comprising a tank, vertically reciprocating bucket adapted to dip into the tank, a guide for the bucket having provision for tipping the bucket at the top of its stroke, means for reciprocating` the bucket consisting of a re .iprocating member movable through a stroke of Yunvarying length, and means for controlling the discharge of the bucket by varying the height to which the bucket is lifted independently of the length of the stroke of the reciprocating arm.

12. A reagent feeder comprising a tank, a spout, a ve tically reciprocating bucket adapted convey a portion of the contents of the tank to the spout, a guide for the bucket` having provision for tipping the bucket as it approaches the top of its stroke, means for reciprocating the bucket through a stroke of unvarying length, and means for adjusting the height to which the bucket is lifted independently of the length of the strol c to vary the amount of tipping of the bucket.

13. )i reagent feeder comprising a tank, a bucket having an extended lip, a spout, means for reciprocating and tipping the bucket for conveying a portion of the contents of the tank to the spout, the spout being directly under the extended lip of the bucket and havingits rearward external surface substantiallj in vertical register with the lower external surface of the end of the lip when the bucket is in its tipped position whereby the spout will catch no drippings from the exterior of the bucket.

lil. A reagent feeder comprising a tank, a bucket, means for reciprocating and tipping the bucket, and a spout to receive the contents of the bucket, the bucket having a projection on that side of the bucket which is lowermost when the bucket is tipped to discharge its contents and adjacent the open enc., the the projection being offset vertically from the spout when the bucket is so tipped to cause the drippings from the exterior of the bucket to fall outside the spout.

15. A reagent feeder comprising a tank, a bucket, power actuating means having a uniform range of movement for causing the bucket to dip into the tank and to be raised therefrom, normally stationary devices for causing the buc ret to tip while being raised, and mechanism for varying the relative positions of the bucket and said normally stationary devices to vary the tipping of the bucket to control the discharge of the contents thereof while maintaining uniform range of movement of the bucket.

16. A reagent feeder comprising a tank, a bucket, a crank, connections between the bucket and crank imparting a reciprocatory motion of uniform range to the bucket to cause it to convey material from the tank, normally stationary devices for tipping the bucket near the top of its stroke, and means for varying the relative positions of the bucket and said normally stationary devices to vary the tipping of the bucket to control the discharge of the contents thereof while maintaining uniform range of movement of the bucket.

17. A reagent feeder comprising a tank, a vertically reciprocating bucket, stationary means engaged by the bucket for tipping the same at the top of its stroke, mechanism for reciprocating` the bucket including a continuously rotating member driven at uniform speed, and connections between said member and the bucket for reciprocating the bucket, constructed and arranged to impart a slow tipping movement to the bucket with a dwell when the bucket is at the limit of its tipping movement.

18. A reagent feeder comprising a tank, a bucket, a continuously rotating member driven at uniform speed, connections between said member and the bucket for vertically reciprocating the bucket, normally stationary devices engaged by the bucket for tipping the same at the top of its stroke, the connections being constructed and arranged to impart a slow tipping m( vement to the bucket with a dwell when the bucket is at the limit of its tipping move ment, and mechanism for varying the relative positions of the bucket and said normally stationary devices to vary the degree of tipping of the bucket to control the discharge of the contents thereof.

19. A reagent feeder comprising a tank, a bucket, a rotatable crank, a pitman connecting the crank and the bucket for vertically reciprocating the latter, the bucket being at the limit of its vertical movements when the crank is passing dead centers, and a guide for the bucket having provision yfor tipping the bucket as the crank approaches a dead center and the bucket approaches the top of its stroke, said pitman having means for varying the amount of discharge from the bucket.

20. A reagent feeder comprising a tank, a bucket, a. rotatable crank, a. pitman connecting the crank and the bucket for vertically reciprocating the latter', t-he bucket being at the limit of its vertical movements when the crank is passing dead centers, a guide for the bucket having provision for tipping the bucket as the crank approaches a dead center and the bucket approaches the top of its stroke, and means for adjusting the length of the pitman to vary the amount of tipping of the bucket.

21. A reagent feeder comprising a tank, a bucket, a support on which the bucket is pivotally mounted, a crank, a pitman connecting the crank with the bucket for reciprocating the bucket, the bucket beingl at the limit of its vertical movements when the crank is passing dead centers, a guide for the bucket having provision for the tipping of the bucket as the tank approaches a dead center and the bucket approaches the top of its stroke, and means for changing the vertical position of the bucket at dead center position of the crank to vary the amount of tipping of the bucket and of the discharge of its contents.

22. A reagent feeder comprising a plurality of tanks adapted to contain various reagents, a reciprocating bucket for each tank for conveying and discharging predetermined quantities therefrom, a driving shaft, and means driven from said shaft for actuating each bucket, said means having provision for adjustment to independently vary the quantity of reagent discharged by each bucket in a given period of time.

23. A reagent feeder comprising a plurality of tanks adapted to contain various reagents, a reciprocating bucket for each tank for conveying and discharging predetermined quantities therefrom, a driving shaft, actuating mechanism for each bucket` and adjustable connections between said shaft and said mechanisms to independently vary the speed of operation of said mechanisms.

24. A reagent feeder comprising a plurality of tanks adapted to contain various reagents, a reciprocating bucket for each tank for conveying and discharging predetermined quantitics therefrom, a driving shaft, and actuating mechanism at each bucket, said mechanism having provision for independently varying the amount discharged from each bucket on each actuation thereof.

In testimony whereof I have signed my name to this specification.

JAMES F. GEARY.

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