US1380992A

US1380992A - Grafting-valve

Info

Publication number: US1380992A
Application number: US395478A
Authority: US
Inventors: Lundquist Levi
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-07-12
Filing date: 1920-07-12
Publication date: 1921-06-07
Anticipated expiration: 1938-06-07

Description

L. umumulsr.

GRAFTING VALVE.

APPLICATION FILED JULY 2, 1920.

Patented June-"z, 1921 UNITED. STATEs LEVI'LU-NDQUIST, or YMIDDLETOWN, CALIFORNIA,

GRAFTING-VALVE,

Specification of Letters Patent,

Application-filed Ju1y'12, 1920." Serial. No. 395,478.

To all whom it may concern Be it known that I, LEvrLUND UIsr, a citizen of the United States, residingv at Middletown, in the county of Lake and State of California, have inventedicertain new and useful Improvements inGrafting- Valves, of which thefollowing .isa specification. 7 I e I This invention relates to the art of grafting and has as its general object to provide a novel and simple means for controlling the flow of sap from thestockafter the shoots have been grafted thereto.

Heretofore it has been customary, after selecting the stock, to cut off theupper portion thereof, make the required number of' incisions or clefts in the upper end of the stock at suitable points in its-circumference,

graft the shoots in place, and thenapply. over the upperzend of the stock and over the grafted ends of the shoots a coatin of a suit able grafting wax so as to prevent rying out of the stock through evaporation of the sap bleeding therefrom. It has been found,

however, that if a considerable quantityof sap accumulates beneath the wax coating,

the coating will be lifted and will becaused to burst or crack thus admitting air with the result that the sap is soon dried out and the growth of the grafts is either greatly retarded or ceases altogether. Therefore the primary object of the present invention is to provide a device acting in the manner of a valve to allow for the overflow of surplus sap from the stock and yet at the Same time prevent access of air to the stock beneath the coating of wax in any (guantity sufiicient to cause any appreciable rying out of the sap. Incidentally the invention has as its object to provide a device for the purpose stated which, inasmuch as it permits of overflow of the surplus sap, will prevent the accumulation of sap beneath the wax coating to such an extent as to cause the coating to burst or crack and thus admit air to the stock with the disastrous results above stated.

Another object of the invention is to provide a device of the class described which may be manufactured at an extremely low cost and which may be readily employed for the purposes above stated without the use of any special tools and without requiring any particular attention after it has once been placed in position.

Inthe accompanying-- drawings Figure 1 is aperspective view illustrating Fig.3 iS a similar view taken in a plane substantially at right angles to the plane of Fig.2; I

Fig. 4 is adetail perspective view of the grafting valve. I

In the drawings the numeral 1 indicates the stock to which the shoots are to be grafted, the shoots being indicated by the numeral 2; In grafting 'the shoots, the usual method of-"cleft grafting-is resorted to, the required number of shoots being placed at suitable points; about the circumference of theupper end-of the-stock 1. However, after the shoots have been grafted to the stock and before the wax coating which is customarily employed, is applied, the device embodying the present invention is driven into the-stock. The said device is most clearly illustrated in Fig. 4 of the drawings and is as before stated in the nature of a valve and is indicated in general" by the numeral 3. The valve comprises a cylindrical tubular body l havingone end 5 disposed at right angles to its axis. The other end of the body 4, however, is cut diagonally as indicated by the numeral 6 so as to provide a laterally facing opening 7 at the lower portion of the body and a pointed terminal 8 at the said end. As above stated, the device of the invention is applied after the shoots have been grafted to the stock but in any event, in applying the device, its pointed lower end will be driven into the upper end of the stock with a hammer or any other driving implement, the pointed terminal 8 adapting the device to readily enter the stock and become firmly embedded therein. the device is driven into the stock may be varied at the judgment of the user but in any event the valve will not be driven in so far as to completely close the opening 7 so that the upper portion of this opening will 105 lie above the upper end of the stock in'the manner most clearly shown in Figs. 2 and f 3 of the drawings. When the valve has been thus driven into place, a suitable quantity of raw cotton or other absorbent mate- 110 Patented Ju-ne 7, 1921.

1n use,-' thestock and Wax coating being shown ansectron;

The distance to which rial, indicated by the numeral 9, is packed within the valve through the upper end terfere with free absorption of sap by the.

filling. After this absorbent filling has been lightly pushed down into the valve until it touches the top of the stock, the usual coating 10 of any suitable grafting wax is applied to the stock to cover the up per portionand upper end thereof and the lower end portions of the grafts or shoots. This coating 10 alSQis packed about the pro jecting upper end portion of the valve 3 in such manner as to completely cover the absorbent material exposed in the opening 7 but the coating does not extendover or in any way obstruct the open upper end of the valve. i e r v After the valve has been packed,.it requires little if any further attention.

From the foregoing description it will be understood that any surplus sap bleeding from the stock 1 and which would otherwise accumulate beneath the coating 10 and cause. the coating to bulge and burst or crack, will,

drying out and thus retarding or completely stopping the growth of the grafts.

It will be evident fromthe foregoing that the invention resides not alone in the means which I have provided for the overflow of surplus sap from the; stock but also in' the method of providing for this overflow, this method consisting in providing an overflow leading through the coating of grafting wax and in further providing within the overflow a packing to absorb the sap and exclude air from the stock.

In walnut grafting a strip of cloth should be wrapped around the waxed stock and upper edge folded over and a paper bag tied over it protecting the scions from the sun of absorbent material and provided with a passage for the entrance of the sap and com-v municating with the said cavity.

2. A grafting sap valve comprising a tubular member having an entering end cut diagonally whereby when the said end is. driven into the stock for aportion of the length of the said end, only, an opening will be left in the side of the valve through which sap may enter the valve. 1

3; A graftingsap valve comprising a tu bular member havingone endsubstantially at right angles'to its axis to provide for direct blows being struck thereagainst with a driving implement and having its other end cut diagonally to provide a tapered enter: ing portion, whereby when theenteringportionis driven'into the stock for a, portion of the length of theentering portion-only, an openingwill be left in the side of the valve through which the sap may enter the valve.

In testimony whereof I afiix-my signature. a

LEVI LUNDQUIST; '.[L.S

and drying winds. The tops of the bag are