US2173966A - Weed exterminator - Google Patents

Description

Sept. 26, 1939.

T. W. JACKSON WEED EXTERMINATOR Filed July 19, 1938 Inventor rziwffaeaon 97 I a By A ttorneys Patented Sept. 26, 1939 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a hand device for the extermination of morning glories, white tops, Russian weeds, Canadian thistle, and analogous deep-rooted vegetations or weeds which usually a infest lawns and the like; and the invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawing wherein:

Figure 1 is a longitudinal sectional view through the device, and

Figure 2 is an elevational view thereof with certain parts broken away and shown in section.

Referring to the drawing by reference numerals it will be seen that the device comprises a tank or receptacle 5 adapted to contain a suitable liquid weed-exterminating agency, as, for example, bisulphide (carbon) and provided at its lower end with a conical cap 6 and at its upper end with a flanged cap I screw-threaded or otherwise secured, in a detachable manner, on said upper end of the tank or cylinder 5.

Extending longitudinally within the tank or cylinder 5 is an elongated tube section 8 that at its upper end extends through an opening provided therefor in the cap I and has threaded on said upper end as at 9 a substantially T-fitting l0 through the horizontal arm portion of which extends a substantially tubular handle ll of any desired length.

A tube section I 4 also extends through an opening provided therefor in the apex of the cap 6,

and at its lower or free end the tube section l4 is tapered as at l2 and is provided with a substantially conical valve seat 3|.

Suitably mounted on the upper inner end of the tube section I4 is a valve casing 29. Threaded into the upper end of the valve casing 29 is a plug 30 that has a reduced externally threaded end threaded into the lower orinner end of the tube section 8 as shown in Figure 1.

The tube section l4 presents a gas chamber for holding a predetermined amount of the liquid that is to be injected into the weed a suitable depth below the surface of the ground, and this chamber is charged with the liquid contents of the tank or cylinder 5 through openings l3 provided in the peripheral wall of the valve casing 25, as also clearly shown in Figure 1.

Operating longitudinally within the tube sections 8 and I4 is a valve rod l! which at its lower end is provided with a substantially conical valve [8 adapted to engage a valve seat 3| protion l4, and an integral point 19 adapted to penetrate the ground.

The rod I! also works through the valve casing 29 and provided on the rod to reciprocate therewith is a plunger 32 that has a working fit within the valve casing 29 and serves as a valve for the ports [3. Integral with the stem 35 of the plunger 32 is a substantially conical valve 36 that is adapted to seat against a substantially conical valve seat 31 provided therefor at the end of the plug 30 engaged with the valve casing 29.

Also, the valve plunger 32 is provided with air ports 38 therethrough as shown. In this connection it will be noted that valve 36 is engaged with its seat 31 when valve I8 is engaged with its seat 3|, the valve plunger 32 being thus above the ports l3 permitting the fluid within the cylgder 5 to pass through the ports into the cham- The handle II is provided adjacent one end thereof with an elongated slot 2| in which is pivoted as at 22 the intermediate portion of a substantially S-shaped handle 23. Handle 23 at one end thereof has a pin and slot, or lost motion connection 24 with the upper end of the valve rod ll, it being noted, in this connection, that in the presentinstance, the upper end of rod I1 is provided with a yoke 25 which receives between the legs thereof the slotted end of handle 23, while a bolt 24 extends through apertures in the legs of the yoke 25 and through the slot 25 in said end of the handle 23.

The handle 23 is normally urged to rotate in a counter-clockwise direction through the medium of a coil spring 21 that at one end is suitably anchored in a detachable manner, and as indicated generally at 28 to the periphery of the tank 5 while the other end is suitably connected with the handle 23 adjacent the grip end of said handle.

To facilitate the penetration of the ground by the pointed end of the device, and to limit the extent of penetration, there is provided a foot bar 21'. Bar 21' extends laterally from the lower end of the tube 8 and is adjustably secured on the tube through the medium of an integral eye 28 formed on one end of the bar and sleeved on the tube, and a set screw 29' threadedly engaged with the eye and adapted to be threaded home into binding engagement with the tube 8 to thereby secure the bar 21' at the desired position of adjustment.

Also, and as shown, cap I for the tank or cylinder 5 is provided with a suitable filling neck 40.

Also, the device is equipped with a suitable liquid level indicator, the same being in the form of a rod 38 graduated in terms of gallons and fractions thereof, or as otherwise will suit the purpose. Rod 38 works through a suitable boss 39 provided therefor in the cap I and is provided on its inner end with a float 33.

Obviously as the level of the liquid within the tank 5 rises or falls, rod 38 will move through the boss 39 in the proper direction and by reading the upper end of the boss against the graduations on the rod, one may readily ascertain the amount of liquid within, the tank or container 5.

In operation, the device is placed with the point I! engaging the ground. With one foot resting on the foot bar 21' and the hand gripping handle downward pressure will cause the point I! and lower end of the tube 8 to pierce or penetrate the ground to the desired depth, the penetration being limited by engagement of the foot bar 21' with the earth's surface. The operator then pulls up on the handle 23 against the action of spring 21 causing the point i8 and rod l1 to move downwardly relative to the tube H so that the point I9 further penetrates the ground while at the same time valve l8 moves out of engagement with seat 3| and valve 32 moves into closing position with respect to the ports l3. Closing of ports 13 by valve plunger 32 cuts off further flow of the liquid contents of the tank 5 to the chamber l5 while the movement of the valve l8 from off its seat 3| will permit the liquid in the chamber l5 to escape therefrom. Preferably in using the device the point is will be positioned so as to penetrate the weed and consequently the exterminating fluid will enter the hole or gash that has been made in the body of the weed sufllciently to kill the latter.

Obviously the operation just described is i'ollowed for each injection of the fluid into the ground and/or the weed or plant. Also the provision of the ports 38 in the valve plunger or piston 32 will prevent the formation of a vacuum and permit free flow and discharge of' the liquid at the discharge end of the tube section ll.

It is thought that a clear understanding of 5 the construction, utility and advantages of an invention of this character will be had without a more detailed description.

Having thus described the invention what is claimed as new is: I A weed exterminator embodying a tank f0 an exterminating fluid, a sectional tube extending longitudinally through the tank and having a section extending beyond the lower end of the tank and terminating in a valve seat, a valve cas- 15 ing connecting the ends of the sections of the tube internally of said tank, said valve casing and the connection between the casing and one of the sections of the tube. being provided with a valve seat, said valve casing below said seat being also provided with ports for the admission of the fluid contents'of the tank into the lower section of said sectional tube, a valve rod operable longitudinally within the sectional tube and the valve casing and provided at one end with a penetrating point, and an integral valve adapted to engage the first-named valve seat, a valve assembly on the valve rod including a valve element arranged to engage the second-named valve seat when the first-named valve is in engagement 30 with its seat, and a valve plunger for opening and closing said ports, said plunger being in an open position with respect to said ports when the aforementioned valves are engaged with their respective seats, a handle for said tank mount- '36 ed on the upper end of the tank, a hand lever pivoted intermediate its ends to said handle, means pivotally connecting one end of the hand lever with the upper end of the valve rod for transmitting movement of the hand lever to said "40 rod for raising and lowering the latter for seating and unseating said valves.

THOMAS W. JACKSON.

Images