US2254021A

US2254021A - Turpentine hack and puller

Info

Publication number: US2254021A
Application number: US361161A
Authority: US
Inventors: William A Sessoms
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-10-14
Filing date: 1940-10-14
Publication date: 1941-08-26
Anticipated expiration: 1958-08-26

Description

Aug. 26, 1941. w. A. SESSOMS TURPENTINE HACK AND FULLER Filed Oct. 14, 1940 Z0012 6am LE- Seasons Patented Aug. 26, 1941 UNITED STATES PATENT ()FFICE 2,254,021 'TURP-ENTINE HACK AND PULLER William A. Sessoms, Bonifay, Fla. Application October 14, 1940, Serial No. 361,161

7 Claims.

The present invention relates to a turpentine hack and puller. More particularly the invention relates to a novel form of knife blade and mounting therefor having certain novel features of construction as hereinafter described.

This application is a continuation in part of my co-pending application Serial Number 215,034, filed June 21, 1938.

The present invention relates to a novel form of knife blade which may be readily mounted or removed from a mounting member, and in which the stresses developed in a cutting stroke with the tool are'absorbed in a manner so as to reduce Wear on the tool to a minimum, and in which a novel form of guide member is used which may be readily mounted or dismounted, and in which the guiding edge engages the face of the tree in a rectilinear non-cutting edge, the position of which may be readily adjusted with relation to the cutting edge of the knife member.

One of the objects of the present invention is to provide a form of knife member which may.

be more readily secured in position on the mounting member than those of similar tools heretofore used.

Another object of the invention is to provide a form of knife member which may be held securely in position on the mounting member without tendency'to be rocked or moved during a cutting stroke with the tool.

Another object of the invention is to provide v a form of knifeblade having holding means in connection with the mounting member by which the knife blade may readily slide into position and inwhich the thrust of a cutting stroke is absorbed by a surface on the mounting member in a plane arranged perpendicular to the direction of the thrust, or in other words, at right angles thereto.

Another object of the invention is to provide a form of guide member which may be manufactured at a low cost and which has guide edges which permit the guide member to slide or travel accurately in a straight line on the face of the tree.

Another object of the invention'is to provide a form of guide member and mounting therefor in which the position and limiting movements of the guide member in'relation to the cutting edge of the knife member may be adjusted on the guide member, so as to permit the substitu-' tion of a guide member of a different size while using the same mounting member and knife member.

With these and other objects in view; the in vention comprises the various features of construction hereinafter'more fully described and particularly defined in the annexed claims.

The various features of the invention are illustrated in the preferred form thereof in the accompanying drawing, in which:

a Fig. 1 is a view in elevation, partly in section, of a turpentine hack and puller of the invention showing the knife member and guide in position on the mounting member;

Fig. 2 is a sectional view in elevation taken on the section line 2-2 of Fig. 1; r

Fig. 3 is a plan view of the mounting member showing the lateral grooves for holding theknife member in place, and showing also the slot or depression in the guide support portion thereof for cooperation with a spring member to fasten the guide member in place on the mounting member;.and v Fig. 4 is a sectional view in elevation taken on the section line 44 of Fig. 1.

Referring more in detail to the drawing, the turpentine hack and puller of the present invention comprises three main parts; a mounting member 2, a knife member 4 and a guide member 6, which parts may be readily assembled or separated.

During use of the tool, the mounting member 2 is attached to a handle member in the manner illustrated, for example, in Fig. 1 of the drawings of the issued Patent No.'2,129,790 andneed not be furtherdescribed therefore.

The knife member 4 of the present invention is preferably curved in transverse section in substantially the form of a narrow saddle having side portions 8 and I0 and a forward curved cutting edge l2 extending symmetrically downwardly and inwardly from the uppermost or crown portion H! of the said member.

The lower marginal portions 16 and I8 of side members 8 and I0 stantially right angles the arebent inwardly at subto the mid-plane ofthe knife member so as to form laterally, inwardly projecting'edge portions 20 and 22. Theknife member is preferably of resilient steel so as to permit slight bending action, whereby the knife member may be held in place in the grooves of the head of the mounting member with a slight tension, thus holding the knife member more securely in place.

In the preferred form of. the invention, the mounting member 2 isprovid'ed with an enlarged head portion 24 in which are

lateral grooves

26 and 28, one on each sideQof the head and extend ing in a plane substantially parallel to the crown portion l4 of the knife member, or in other words, extending in substantially the direction of the line of the applied force of a cutting stroke during use of the tool. The width of the

grooves

26 and 26 is preferably slightly wider than the thickness of the edge portions 28 and 22 of the knife member so as to permit the edge portions to slide readily into the grooves without excessive friction. The distance between the bases of the grooves of the head member is preferably slightly greater than the distance between the edges and 22 of the knife member in the unflexed position thereof so that when the knife member is mounted on the head of the mounting member, the knife member will be slightly flexed so as to hold the same rigidly in position thereon. In order to assist in mounting the knife member on the head of the mounting member, the forward portions or ends of the grooves 26 are curved inwardly at 21 and 29 (Fig. 3) so that in forcing the knife member in place, it is assisted somewhat by the lever action of the inclined surfaces of the grooves in initiating the movement.

In order to assist in holding the knife member in place and to take up the horizontal component of the force of a cutting stroke, the rearward end portions 32 of theinwardly projecting edge portions 20 and 22 are flat and parallel to the end surfaces 34 and 36 in the

grooves

26 and 28, as indicated in Figs. 1 and 3 of the drawing. By means of this construction the knife member is rigidly held in place on the head of the mounting member, the said end surfaces acting as stop members in the grooves.

The guide member 6 is preferably held in place on the mounting member 2 by means of a support comprising a raised cylindrical member 38, which is made integral with the body portion of the mounting member, being connected thereto by means of a rectangular metal portion 40.

In the upper forward portion of the cylindrical member 38 is a cut-out portion or groove 42, the forward face 44 of which is in a plane at substantially right angles to the axis of the cylinder, as will 'be apparent from Fig. 1 of the drawing. The groove is designed to cooperate with a holding spring member 46 attached to the guide member to holdthe guide member in place, and to permit readily dismounting the same from the mounting member. The guide member comprises a longitudinally extending guide portion 1 which is connected to a narrowed neck portion 9, which is integral therewith and joins an enlarged body portion having a cylindrical opening 52 therein and skirt portions 48 and 58 depending therefrom. The cylindrical opening 52 is of a size adapted to fit and turn on the cylinder member 38. Above the cylindrical opening 52 in the enlarged body portion is a groove 54 for holding the spring member 45 in place and in which the spring member is seated. The spring member may be attached to the guide member and held in place in the groove 54 by means of a pin 56, as shown in Figs. 1 and 4. The spring member 46 is provided with a bent portion 41 having a configuration conforming substantially to the contour of the cut-out portion 42 in the cylinder member 38. It will be apparent that when the guide member 6 is mounted in place on the cylinder member 38, the spring member 46 is flexed upwardly, permitting passage of the guide member into position on the cylinder member 38- against the stopor raised back portion 6d of the mounting mem-- ber 2,'whereby the bent portion of the spring member moves into place in the cut-out portion 42 and retains the guide member in place. In order to dismount or remove the guide member from the mounting member, the spring member is lifted out of contact with the forward wall or face 44 of the cutout portion by pressing upwardly under the curved portion of the spring member, whereby the guide member may be slid forwardly on the cylinder member 38 and disengaged from the mounting member..

In order to permit adjustment of the guide member 6 on the mounting member, either in fixed position or with limited movement from one side to the other as the cutting stroke is changed from one side of a tree to the other side, screw members 58 and 60 are mounted in the skirt members 48 and 50, being mounted in threaded openings 62 and 64, so that the length of the shaft of the set screws projecting inwardly from the inner surfaces of the skirt members may be readily adjusted. The set screws may be held in adjusted position in the skirt members by means of spring memberslifi and 68, the ends of which engage against the outer fiat face portions of the skirt members, as indicated more particularly in Fig. 1 of the drawing.

The upper portion of the guide member 6, or in other words, the upper surface of the longitudinally extending portion 1, is preferably ground flat so as to provide two rectilinear

marginal guide edges

12 and 14, which serve to contact in turn with the face of a tree during a cutting stroke, and provide guide edges which do not readily zbecome dull, and which may be easily sharpened, if desired'by means of an oil stone or-a suitable grinder.

It will be'understoodthat various changes or modifications may be made in the form of the invention herein described Without departing from the spirit or scope of the invention as defined in the annexed claims.

Havingthus described the invention, what is claimed as new is:

1. A turpentineknife curved in transverse section and having symmetrical side members, a

symmetrically curvedcutting edge, and inwardly extending edge portions at the lower end of the side members adapted to cooperate with corresponding grooves in a mounting member for holding the knife member in place thereon.

2. A turpentine knife curved in transverse section and having symmetrical side members, a symmetrically curved cutting edge, and rectilinear inwardly extending marginal portions at the lower end portion of the side members adapted to be held in corresponding grooves in a mounting member which the said grooves are substantially parallel to the direction of movement of the knife member during a cutting stroke. I x

3.-- In-a device of the kind described, a knife member having symmetrically arranged side members,.inwar.dly projecting rectilinear edge portions at; the extremities of the side members, a mounting member for the knife member havinggrooves adaptedto hold said rectilinear edge portions, stop fmembers .in'the grooves adapted to absorb the horizontal component of the cutting force'du'r in'g-a cutting stroke and means on the-said mountingmember to assist in positioningthe knife member on the mounting member.- f

. 4. In adevice' ofIthe kind described, a knife member having symmetrically arranged side members, said knife-member being of resilient steel and curved in transverse section substantially in the form of a saddle having the upper portion extending in a straight line, inwardly extending flange portions of the side members extending substantially parallel to the said upper portion, a mounting member for the knife member having an enlarged head portion, lateral grooves in the said head portion on each side thereof extending inwardly therein so that the distance between the :base of the grooves is slightly greater than the distance between the said inwardly extending flange portions, said grooves having inwardly curved portions at the forward portions to provide lever action in mounting the knife member on said mounting member and means for limiting the movement of the knife member in said grooves.

5. In a device of the kind described, a mounting member, a guide member adapted to be mounted on said mounting member, said guide member having a longitudinally extending guide portion, said guide portion having a flat upper surface forming lateral rectilinear edges with the lateral surfaces of the said guide portion, an enlarged body portion, skirt members depending from said enlarged body portion and adjustable stop means connected to said skirt members to permit adjusting the limits of movement of the guide member in relation to the mounting memher.

6. In a device of the kind described, a mounting member, a guide member adapted to be removably mounted on said mounting member, said guide member having a longitudinally extending guide portion connected by means of a narrow neck portion to an enlarged body portion, said guide portion having an upper flat surface forming rectilinear edges with the lateral surfaces thereof, said edges serving to guide the tool during a cutting stroke, a cylindrical opening in said body portion, skirt members depending from said enlarged body portion and adjustable stop means connected to each of said skirt members for adjusting the guide member in fixed position or for limited movement to each side of the mid position thereof to control the depth of cut in a cutting stroke.

7. In a device of the kind described, a mounting member, a knife member mounted on said mounting member by means of rectilinear grooves and projections extending in the direction of a cutting stroke, a stop member associated with said grooves to limit and control the position of the knife member on said mounting member, a guide member adapted to be mounted on said mounting member having an upper flat surface extending in a single plane and forming lateral edges with the side surfaces of the guide member, an enlarged body portion having a cylindrical opening therein, an opening in said body portion above said cylindrical opening, a spring member in said opening, a cut-out portion in said mounting member adapted to cooperate with said spring member to hold the guide member in removable position on the said mounting member, adjustable stop means for adjusting the position of the guide member within limiting positions and means for locking the adjustable stop means against undesired movement.

WILLIAM A. SESSOMS.