US1042965A - Grafting-tool. - Google Patents

Description

G. A. PRIEST.

GRAFTING TOOL.

APPLICATION FILED JUNE 26 Patented 0013.29, 1912.

COLUMBIA PLANOORAPH cc.,wAsmNGToN, D. c.

COBYDON A. PRIEST, OF WEST FARMINGTON, MAINE.

GRAFTING-TOOL.

Specification of Letters Patent.

Patented. Oct. 29,1912.

Application filed June 26, 1912. Serial No. 706,086.

To all whom it may concern:

Be it known that I, CoRYDoN A. PRIEST, a citizen of the United States, residing at West Farmington, in the county of Franklin, State of Maine, have invented certain new and useful Improvements in Grafting- Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to grafting tools.

The object of the invention resides in the provision of a tool of the character named which will facilitate the operation of grafting trees and plants and whose use will greatly increase successful results from grafting operations.

A further object of the invention resides in the provision of a grafting tool which will be simple in construction, easily operated, durable and comparatively inexpensive to manufacture. I

WVith the above and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which- Figure 1 is a perspective view showing the tool applied to the limb of a tree preparatory to splitting the latter for the introduction of a scion and the usual wax seal, Fig. 2, a perspective view of the tree limb shown in Fig. 1 after same has been split and the grafting tool with the exception of the chisel member removed, Fig. 3, a plan .view of the tool detached, Fig. 4, a side view of the tool, Fig. 5, a longitudinal section of the tool, and Fig. 6, a detail perspective view of the chisel holder and guide employed in the tool.

Referring to the drawings the tool is shown as comprising a pair of nipper elements A and B each of which includes a handle portion 10 and a jaw portion 11. Each of the jaws 11 are provided with inwardly directed outer ends 12 which are adapted to cooperate with each other after the fashion of a wire cutter. The nipper elements A and B are pivotally connected just inward of the jaws 11 by means of a bolt 13 which has threaded on one end a thumb nut 14. This bolt 18 also passes through the base 15 of a chisel holder and guide C and serves to secure said chisel holder and guide to the nipper elements A and. B as will be apparent. The chisel holder and guide C is provided with an arm 16 which terminates in a tubular portion 17 the bore of which is disposed transversely of the jaws 11. By this constructionit will be apparent that the chisel holder and guide may be adjusted so as to move the tubular portion 17 transversely of the jaws 11, the thumb nut 14 being utilized to secure said tubular portion in a desired adjustment. Slidably mounted in the tubular portion 17 is the stem 18 of a chisel element 19 through the instrumentality of which latter the necessary split is made in the tree branch prior to the insertion of the scion.

In the use of the tool the branch of the tree, indicated at D, is first sawed off and the free end of the stub gripped between the jaws 11. Suflicient pressure is exerted upon the jaws 11 through the medium of the handles 10 to force said jaws through the bark at diametrically opposite points on the branch. The chisel holder and guide 0 is then adjusted relatively to the free end of the branch so as to bring the chisel 19 in proper position to slit the branch longitudinally. The chisel 19 is then operated by means of blows imparted by a hammer or the like against the outer end of the stem 18 so as to slit the branch D. It will be here noted that owing tothe fact that the bark of the branch has been previously cut in a regular manner by the aws 11 the slit produced by the operation of the chisel 19 will be substantially smooth and even. After the slitting of the branch D the nipper element A and B and the chisel holder and guide C are removed leaving the chisel 19 embedded in the branch D and serving to hold the separated portions of the branch in spaced relation. The desired scion is then applied in the slit produced by the chisel 19 afterwhich the necessary wax seal is introduced. The chisel 19 is then removed when the separated sections of the branch D will contract tightly upon the scion and assure in conjunction with the wax seal an air tight joint between the branch and scion.

It has been found in practice that the successful nature of the grafts made with the assistance of the tool herein described has been due to the evenness of the slit produced by the tool, such evenness of the slit serving to enhance the air tight nature of the oint when the scion is applied and the free flow of the sap from the branch to the scion.

lVhat is claimed is:

1. A grafting tool comprising a pair of pivotally connected members forming handles and cooperating jaws, and a chisel element slidably mounted upon said pivoted I members for movement in a plane at right angles to the plane of movement of the jaws,

whereby the operation of said chisel element will split the branch in the plane of the severed portions of the bark, and means permitting removal of the pivoted members from engagement with the branch independent of the chisel element.

3. A grafting tool comprising a pair of pivotally connected members forming handles and cooperating jaws, a bracket adjustably secured to said pivoted members by the pivotal connection of the latter, said bracket including a tubular portion having its bore disposed at right angles to the plane of movement of the jaws, and a chisel element slidably mounted in said tubular portion.

In testimony whereof, I affix my signature, in presence of two witnesses.

CORYDON A. PRIEST. Witnesses:

LULA M. HoLWAY, E. HERBERT DINGLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images