US1981122A - Weed killer - Google Patents

Description

Nov. 20, 1934. L, E, REYNARD 1,981,122

WEED KILLER Filed July 19, 1934 2 Sheets-Sheet 9 I Invenlor I! .Zee Z Z a By NOV. 20, 1934. J L, REYNARD 1,981,122

I WEED KILLER Filed July 19, 1934 2 heet.sShee1; 2

l Eel J9 Inucnlor 4 JeeEFqymra? l3 Patented Nov. 20, 1934 UNITED STATES WEED KILLER Lee E. Reynard, Utica, Ohio Application July 19, 1934, Serial No. 736,116

2 Claims.

This invention relates to a device for killing weeds and the like, the general object of the invention being to provide means whereby liquid can be injected into the roots and around the roots of weeds to kill the same by means of a cylinder containing a piston for forcing liquid from the cylinder into a needle which is to be pressed into the soil and roots of the weeds.

Another object of this invention is to so form the parts that packing means, piston rings and the like are rendered unnecessary.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the. accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:-

Fig. 1 is an elevation of the device.

Fig. 2 is a section on line 2--2 of Fig. 1.

Fig. 3 is a view of the piston and its rod.

Fig. 4 is a vertical sectional view through the lower part of the cylinder and the piston.

Fig. 5 is a section on line 5-5 of Fig. 2.

Fig. 6 is a vertical sectional view through the needle.

Fig. 7 is a section on line 77 of Fig. 6.

Fig. 8 is an elevation of the piston cylinder.

In the drawings, the numeral 1 indicates the cylindrical member which has one end closed by a tapered elongated cap 2 and its other end by a dome-shaped cap 3 which is threaded to the cylinder 1 so that it can be removed and this cap 3 has a filling opening therein closed by a plug 4. A boss 5 is formed on the cap 3 for forming a guide for the piston rod 6. The cap 2 is provided with an elongated bore, the outer end of which is enlarged and threaded and a cylinder 7 passes through the bore and has a threaded tapered part 8 at its outer end which is to be threaded into the threaded part of the bore of the cap 2, the tapered part merging into a non-circular part 9 for engagement by a wrench so that the cylinder can be tightly threaded into the bore of the cap 2. A threaded receiving part 10 extends from the part 9 for receiving the threaded end of a needle 11, said threaded part 10 having a valve seat 12 therein for receiving a ball valve 13 which is pressed upon the seat by a spring 14 having its outer end engaging a pin 15 carried by the inner end of the needle.

The piston rod 6 has its outer end forked as shown at 16 and the prongs support a handle 17. This rod is preferably of tubular construction and its inner end receives a piston 18 which is held in place by a pin 19. This piston is preferably formed of rolled steel ground to tightly fit the cylinder '7. Said cylinder 7 has a number of holes 20 in its inner end which communicates the cylinder with the large cylinder 1 and when the piston rod is pulled outwardly, the piston will uncover said holes so that liquid placed in the large cylinder 1 can enter the cylinder 7. A stop member 21 on the piston rod engages the cap 5 to limit outward movement of the piston rod. A stop member 22 on the inner part of the needle limits movement of the needle into the ground.

Thus, it will be seen that any suitable liquid which will kill weeds and the like can be placed in the cylinder 1 by removing the plug 4 and by holding the device in an upright position, the piston and piston rod will move downwardly so that the piston will close the holes 20 to prevent escape of the liquid. When the device is to be used, the needle is pressed into the roots or the ground adjacent the roots and then the piston rod is pulled upwardly so that the liquid can pass into the cylinder 7 through the holes 20 and then the piston rod is pressed downwardly so that the piston 18 will enter the piston 7 and thus exert great pressure upon the liquid in the piston '7 so as to force the liquid past the valve 13 into the needle from which it will escape through the holes 23 in the outer end of the needle and thus the liquid will be ejected into the roots and around the roots and thus the weeds will be killed. The valve 13 will prevent air from being drawn into the cylinder '7 when the piston is retracted and it also acts to prevent any escapement of the liquid from the cylinder '7 before the piston is projected.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

I claim:--

1. A device of the class described comprising a cylinder having end members, a small cylinder carried by one end member and projecting into the large cylinder and having holes in its inner end, a hollow needle threaded to the outer end of the small cylinder, a piston of rod-like form fitting in the small cylinder, and a piston rod connected with the piston and passingthrough the opposite end member of the large cylinder.

2. A device of the class described comprising a large cylinder, caps closing the ends thereof,

passing through the bore and having a threaded part engaging the threads of the cap with its inner end having holes therein to place the cylinder in engagement with the large cylinder,

a rod-like piston connected with the piston rod and fitting in the small cylinder, a needle detachably connected with the outer end of the small cylinder of hollow construction and having outlet ports at its outer end, and a springpressed valve normally closing the outer end of the small cylinder.

' LEE E. REYNARD.

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