# US 5,341,836 A · Hands free weed and feed

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- Number: US 5,341,836 A
- Document ID: US5341836A
- Status: Granted
- Kind: A
- Application number: 08/069,735
- Filed: 1993-06-01
- Granted: 1994-08-30
- Earliest claimed: 1993-06-01
- Inventors: Terrance M. Doherty
- Web page: https://patentgrep.com/patent/US5341836A

## CPC

- B05B 7/30: the first liquid or other fluent material being fed by gravity, or sucked into the carrying fluid
- A01C 23/042: {Adding fertiliser to watering systems}
- Y10T 137/4891: With holder for solid, flaky or pulverized material to be dissolved or entrained
- Y10T 137/87627: Flow control means is located in aspirated fluid inlet
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- A01C: PLANTING; SOWING; FERTILISING (parts, details or accessories of agricultural machines or implements, in general A01B51/00 - A01B75/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A liquid fertilizer dispensing device comprising a container adapted to hold liquid fertilizer solution; means at the top thereof to connect to a water faucet and to dispense a stream of water therefrom; feeder tube means extending from the interior base of said container to a point adjacent the stream of water passing through said top means so that the venturi effect of the passing stream of water will suck the fertilizer solution up through said feeder tube means and inject the same into the passing stream of water; valve means to adjust and control the rate of flow of said fertilizer solution into and through said feeder tube means; and preferably additional means to constantly indicate the level of fertilizer solution within said container and to permit the addition of more solution or granulated fertilizer to said container.

## Claims

### Claim 1

A liquid fertilizer dispensing device comprising:
a semi-cylindrical, transparent container having a straight side, a top wall, and an interior, said straight side being operable to engage a surface to support said container adjacent said surface, said top wall having an entry port extending therethrough, said container being operable to contain a liquid fertilizer solution;
a feeder tube extending from said interior of said container through said top wall exteriorly of said container;
a valve coupled to said feeder tube and in fluid communication through said feeder tube with said interior of said container;
a T-fitting having a base end in fluid communication with said feeder tube, an entrance end with an entrance threaded collar operable to engage and fasten to a conventional exterior water faucet, and an exit end with an exit threaded collar operable to engage and fasten to a conventional water hose, said T-fitting facilitating fluid flow from said entrance end to said exit end and past said feeder tube such that a venturi-effect vacuum is created to draw said liquid fertilizer solution from said container, whereby said liquid fertilizer solution is mixed with said fluid flow;
a closure cap removably coupled to said container for sealing said entry port; and
a perforated capsule removably contained within said container, said capsule having a plurality of perforations therethrough and a removable, press-fit lid to permit the enclosure of granulated fertilizer within said capsule, such that said granulated fertilizer will mix with said solution upon being positioned through said entry port and into said container.

### Claim 2 (depends on 1)

The liquid fertilizer dispensing device of claim 1, and further comprising graduation markings on said container for visually indicating a volume of said solution within said container.

### Claim 3 (depends on 2)

The liquid fertilizer dispensing device of claim 2, and further comprising a level gauge for indicating a level of said solution within said container, said gauge being mountable to said surface adjacent said container, said gauge comprising a slidable arm extending through said top wall of said container, and a float coupled to said arm, said float being buoyant relative to said fluid such that said arm moves in accordance with said level of said solution in said container.