US2218054A - Turpentine hack and puller - Google Patents

Description

Oct. 15, 1940. w. A. sEssoMs TURPENTINE HACK AND FULLER 2 Sheets-Sheet 1 Filed June 21, 1938 Oct. 15, 1940, w. A. sEssoMs TURPENTINEHACK AND FULLER 2 Sheets-Sheet 2 Filed June 21, 1938 Patented Oct. 15, 1940 I we UNITED STATES, PATENT. OFFICE William A. Sessoms, Bonifay, Fla.

Application June 21, 1938, Serial No. 215,034

16 Claims.

'l0 ing certain improvements over the form of the invention disclosed in my Patent No. 2,096,384, issued October 19, 1937, the said application covering improvements in the guide member which is mounted so as to be movable from one position to another or fixed in position by adjusting means.

The present invention relates specifically to a form of knife blade and knife blade mounting adapted for use in connection with various forms of my invention as disclosed in the said patent and said application, and which is also adapted to be used in the ordinary form of turpentine hack and puller having no guide member or in which the guide member is fixed in position with relation to the knife member.

One of the objects of the present invention is to provide a form of knife member adapted for various types of a turpentine hack and puller and which is held in place on the body member thereof by spring pressure engagement.

Another object of the invention is to provide a form of knife blade for a turpentine hack and puller having holding means to rigidly hold the knife member in place on the body member and in which the knife member is of spring steel and :45 of a form so that the knife blade may be sprung into place and readily removed from the body member by overcoming the resilient force holding the knife member in place.

Another object of the invention is to provide a form of knife blade adapted for various forms of a turpentine hack and puller having a symmetrical curve and mounting means with relation to the body member so that the knife member may be sprung into place on the body member and rigidly held in place by the holding means during a cutting operation and which is flush with the adjacent portions of the body member so as to avoid interference with the cutting operation in a direct line of out.

Another object of the invention is to provide a form of knife member which is adapted for various types of tools so that when applied to a simplified form of tool, the initial cuts on a turpentine bearing tree may be made more easily near .m the cup than is possible with the ordinary or more complex form of myinvention, in which a guide member is used.

With these and other objectsin .View, the invention comprises the various features hereinafter more fully described and particularly defined in .theappended claims, T

The device of my invention is illustrated in the accompanying drawings in which:

Fig. 1 is a view in elevation showing the preferred form of knife memberof' myinvention mounted on a turpentine hack and puller having a removable and adjustable elongated guide member;

Fig. 1A is a view in elevation of the shoulder portion of the body member of Fig. 1 with the knife member removed;

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

Fig. 3 is a sectional view through the knife member and mounting therefor taken on the section line 33 of Fig. 1 in the direction of the arrows;

Fig. 4 is a cross sectional view of the knife member alone, as removed from the body member, taken on the section line 3-3 of Fig. 1;

Fig. 5 is a detailed view in elevation showing a modified form of knife member embodying my invention as mounted on the adjacent portion of the body member;

Fig. 6 is a sectional view taken on the section. line 6-6 of Fig. 5, showing the projections on the knife member which engage in slots or openings in the body member to securely hold the knife member in place; I

Fig. '7 illustrates a second modification of the knife member of my invention showing a different form of mounting means as hereinafter described;

Fig. 8 is an end view of the knife member shown in Fig. 7;

Fig. 9 is a view in elevation of the form of knife shown in Figs. 7 and 8 as mounted on the ordinary form of holder without a guide member;

Fig. 10 is a view in elevation of a third modification of the knife member of my invention in which the knife member is held in place by expansion against the adjacent walls of the holding means;

Fig. 11 is a cross-sectional View taken on the section line l|ll of Fig. 10 in the directionv of the arrows, and

Fig. 12 is a view in elevation showing the knife member of the third modification separated from the mounting bodyportion of the tool.

Referring to Fig. 1 of the drawings, the knife member 2 is mounted on the body member 4 of a turpentine hack and puller having a demountable adjustable form of guide member 6. In this form of the invention the knife member 2 is preferably symmetrically curved as shown in Figs. 3 and 4 of the drawings and is made of a suitable spring steel having a high elastic limit and adapted to take and hold a knife edge. In this form of the invention the knife member fits over a shoulder portion 8 of the body member and abuts against a flange portion [6 on the shoulder member so that in making the cutting strokes with the knife member the force of cutting is transmitted directly to the rigid wall portion l2 of the body member 4 of the device.

In order to rigidly hold the knife member in place, the mounting member for the knife member carries projections l4 and I6 which engage in slots as I8 or openings as 20 in the knife member. The projections are preferably cylindrical in form and fit into corresponding cylindrical openings or slots so as to prevent movement of the knife member when in place on the mounting member but to permit readily combining or moving the cooperating parts into adjusted position.

In the form of the invention illustrated in Fig. 1 of the drawings, the guide member 6 is preferably mounted on a projection 22 of the body member 4 so that the guide member may be readily removed from the body portion so as to permit sharpening the knife member without removal thereof from the body member.

The projection 22 carries a cylindrical portion 24 on which the internal cylindrical portion 26 of the guide member 6 is mounted. The lower portion of the cylindrical member 26 is divided into two separated branches 28 and 30 so as to leave a clearance 32 and 34 on each side of the part 22 of the body member so as to permit lateral movement of the guide member 6. In order to permit adjustment of the guide member so as to regulate the thickness of cut on each side of the knife blade, adjusting means as set screws 36 and 38 are provided in the arms 28 and 30 respectively. By adjusting the set screws, movement of the guide member from side to side may be limited so as to provide the desired thickness of cut.

The forward end portion 21 of the cylindrical member 24 is preferably made larger than the main body portion of the cylinder 24 so as to form a stop head to engage the forward end 25 of the cylinder member 26. To assist in holding the guide member 6 in place on the body portion 22, a spring member 42 is mounted in the body of the guide member 6 so as to project over the projecting end 21 of the cylinder member 24.

It will be apparent that if it is desired to employ this adjustable form of guide member as a fixed guide, it is necessary only to set the adjusting screws 36 and 38 into contact with the adjacent portion of the projection 22 by which the guide member 6 will then be rigidly held in place.

In the form of guide member 6 as illustrated in Fig. 2 of the drawings, the upper portion thereof is divided into a V form by the side members 44 and 46 which permit accurately positioning the guide portions under the last cut streak on the tree. It will be understood that in making a right hand cut, the edge member 48 rides on the under surface of the last out streak, whereas in making a left-hand cut the edge 50 rides on the under side of the corresponding streak on the left face of the tree. The upper portion of the guide member 6 may, if desired, be solid with a fiat top having a corner edge on each side which operates in exactly the same manner as the side members 44 and 46. As another modification, the upper portion of the guide member 6 may taper to a thin edge at the top. Each of the three forms is useful under certain conditions as will be apparent to those skilled in the art.

In order to remove the knife member 2 from engagement with the projections l4 and I6 on the body portion 4 in the form of the invention illustrated in Figs. 1, 2 and 3, I preferably provide indentations as 52 on the inside of each arm 3 and 5 of the knife member so that a tool may be inserted in the indentations which has sufficient 'lever action to force the arms 3 and 5 apart a sufficient distance so that the corresponding slots or openings l 8 and 2G disengage the projections l4 and I6 permitting the knife member to be readily lifted off from the mounting portion 8 of the body member.

It will be noted that in the form of invention as illustrated in Figs. 1 to 3 of the drawings, the knife edge I of the knife member slopes symmetrically rearwardly in a curve from the uppermost edge 9 of the knife member and that the upper or outer surface of the knife member is flush with the corresponding wall portion I2 of the shoulder portion or mounting member 8 of the body member so that as chips are cut from a tree in the cutting stroke there will be no interference during the cutting stroke, and there is a sufficient clearance of space l3 at the inside of the mounting portion 8 so that the chips removed from the tree may pass unobstructed through the said space until the chip is disengaged from the tree. It will be noted also that the knife member 2 is supported transversely by means of a depressed shelf portion 8' so as to support the knife member 10ngitudinally through a substantial distance and to prevent movement of the knife member when in place against the edge or flanged portion In.

Referring to Figs, 5 and 6 of the drawings, a modification of my invention is illustrated in which the projections for holding the knife member in place are integral with the knife member 2, the projections I4, l6 fitting into the openings I6 and 26 in the shoulder portion 8, of the body member 4, the knife member abutting against the flange or shoulder portion It] in the same manner as has been described in connection with Fig. 1 of the drawings.

Referring to Figs. '7, 8 and 9 of the drawings, another modification of the invention is shown in which the knife member 2 has projections l4 and H5 at the lower edge of the knife member adjacent to the rear end of the knife, which engage corresponding depressions as l8 in the shoulder portion 8 of the body portion of the turpentine tool by which the knife member is rigidly held in place. The depressions or slots in this form of the invention are rectangular and extend into the shoulder portion a sufficient distance so that the corresponding projections may be fully seated therein.

Referring to Figs. 10, 11 and 12 of the drawings, an additional form of the invention is illustrated in which the knife member 2 fits under the shoulder portion 12 and is inserted in place by compressing the knife member 2 by means of a tool fitting on the outside of the knife member.

The knife member is provided with openings l8 and 26 which fit over the registering projections l4 and l 6 in substantially the same manner as explained in connection with Fig. l of the drawings, except that the knife member must be compressed in order to position it in place against the interior shoulder portion ID of the'body'portion l2, It will be clear that in this form of the invention the outer surface of the knife'member 2 is exposed only up to the edge 54 and the upper surface of the knife member is flush with the undercut portion 56 of the shoulder portion l2. The knife member 2 in this form of the-invention has a flange or edge portion 54 which abuts against the forward edge 60 of the shell portion '56 and the rear edge portion 62 of the projection 58 of the knife member abuts against a corresponding shoulder portion 64 of the portion l2 of the body portion of the tool.

-It willbe understood that the knife member is adapted to be mounted in connection with any preferred form of body portion of the turpentine hack and puller.

The form of knife member illustrated in Figs. 1, 1A, 2, 3 and 4 has a removable longitudinally extending guide member as above described in detail. 7

The form of knife member illustrated in Figs. to 9 inclusive, is mounted on a body member 4 having no guide portion, this form being particularly adapted for making the initial cuts on a tree.

The form of the invention illustrated in connection with Figs. 10 to 12 inclusive, has a guide member fi which is integral with the body member 4 and extends forwardly of the cutting edge of the knife member so as to guide the knife against the face of the tree and under the last out streak during the out. It will be understood that the form of knife memberas illustrated in Figs. 10, 11 and 12 may be mounted, if desired, in connection with the form of body member havingno guide, as shown more particularly in Fig. 9 of the drawings, or it may be used in connection with ,the form of body member having a removable guide as illustrated more particularly in Figs. 1 and 2 of the drawings.

In the same way, the other forms of the knife member, as above described, may be interchanged with other forms of the body member, the mounting portion or shoulder portion 8 being correspondingly altered 'to'provide the required form of mounting.

It will be understood that various changes or modificationsmay be made in the form of knife member and the mounting member therefor without departing from the spirit and scope of the invention as defined in the claims. It will be apparent, for example, that the cylindrical form of projections may be located at the lower edge of the knife member or slightly above the position as illustrated, for example, in Fig. 6 of the drawings. It will be apparent also that the same form of projection and corresponding opening and depression is not required on both sides of the knife member and the corresponding mounting portion of the body member. If desired, I may, for example, employ a depression in the body member with a corresponding projection M for the left side of the knife member as illustrated in connection with Fig. 8 of the drawings, and employ a corresponding projection on the opposite side of the body portion together with an opening or depression on the right side of the knife member corresponding to the form shown at the right in Fig. 3 of the drawings. If desired also the circular opening 20 maybe positioned in the lower edge of the knife member so that the center of the circular openingis just above the lower edge of the knife member so as to leave an opening at the lower edge of the knifmember.

' It will be noted that mall the forms of the sides of the knife member and mounting member away from the mid-portion or sharply curved portion of the members, by which the knife member is held securely in place, thus preventing canting action during the cutting stroke of the knife.

It will be apparent also that the forms of the openings and corresponding projections may be varied as desired and that I do not necessarily employ a form which is circular or rectangular in cross section. They may be, obviously, triangular in cross section or any irregular form if desired for any special embodiment of the invention.

Having thus described the invention, what is claimed as new is: e

1. In a turpentine hack and puller, a knife member substantially symmetrically curved in transverse section and having a forward sloping cutting edge, a mounting member for the knife member, one of said members having a depressed shoulder portion so as to provide a flange for engagement of the knife portion with the body portion in a plane substantially at rightangles with the line of cut of the cutting edge of the knife member, a projection on each side of one of said members, corresponding depressions in each side of the other of said members adapted to cooperate with the said projection to assist in holding the said knife member in place on the said mounting member, the said knife member being of resilient steel so as to permit bending the said knife member into seating position without permanent distortion of the knife member in the movement to cause engagement of the said depression with the said projection.

2. In a turpentine hack and puller, a knife member of resilient steel curved in transverse section to permit distortion of the side members thereof out of normal alignment, a mounting member for the knife member, a projection on the mounting member, a depression in the knife member adapted to cooperate with the projection on the mounting member for locking the knife member in seated position with relation to the mounting member without extraneous means applied to the projection for retaining the said projection and depression in locked position, the said knife member being bent out of normal alignment to cause engagement of the depression therein with the said projection so that in the seated position of the knife member the resilient steel thereof is not under substantial stress.

3. In a turpentine hack and puller, a knife member of spring steel curved in transverse section to permit expansion of theside portions of the knifemember out of normal alignment, a mounting member for the knife member, a projecion on each side of the mounting member "adapted to cooperate with corresponding depressions near the lower edges of the knife member to assist in holding the knife member in seated position with relation: to the mounting member,

tion to permit distortion of the side members thereof out of normal alignment, a mounting member for the knife member, a projection on each side of the mounting member in a position to engage corresponding depressions at the lower' side of the knife member, a depression on each side of the knife member to engage said projections and engaging abutting surfaces on said members substantially transverse to the cutting edge of the knife member and a depressed portion on one of said members so that in the seated position of the knife member the outer surface of the knife member will be flush with the corresponding adjacent surface of the mounting member.

5. In a turpentine hack and puller, a knife member of resilient steel curved in transverse "section, so as to permit distortion of the side members thereof out of normal alignment in seating or disengaging the knife member, a mounting member for the knife member, a depression in the mounting member, and a projection on the knife member adapted to cooperate with the depression of the mounting member to permit seating of the knife member on the mounting member, said depression and projection being located away from the mid-portion of the knife member.

6. In a turpentine hack and puller. a knife member of spring steel curved in transverse section in substantially U form, a mounting member for the knife member of substantially corresponding U form, a depression in each side of the mounting member, a projection on each side of the knife member adapted to cooperate with the corresponding depressions in the mounting member to assist in holding the knife member in seated position on the mounting member, the knife member being distorted out of normal alignment in seating the knife member on the body member during movement of the projection into engagement in said depressions, the knife member being under no substantial stress in the seated position thereof.

7. In a turpentine hack and puller, a knife member of spring steel curved in transverse section to permit distortion of the side members thereof out of normal alignment, a mounting member for the knife member, a depression in each side of the mounting member in a position to engage corresponding projections at the lower sides of the knife member, a projection on each side of the knife member to engage said depressions and a depressed portion on the mounting member adapted to engage the under side of the rear portion of the knife member so as to provide engaging abutting surfaces on the mounting member and knife member substantially transverse to the cutting edge of the knife member to oppose the force of the cutting stroke of the knife member.

8. In a turpentine hack and puller, a knife member of resilient steel curved in transverse section to permit distortion of the side members thereof out of normal alignment, a mounting member for the knife member having a flange portion extending forwardly from the main mounting portion thereof, a projection on the mounting member, a depression in the knife member adapted to cooperate with the projection on the mounting member to assist in holding the knife member in seated position, the knife member being compressed to seat under the said flange portion to cause engagement of the said projection in the depression, the knife member being of a form so that the stress in the steel thereof is substantially released in the seated position of the knife member.

9. In a turpentine hack and puller, a knife member of resilient steel curved in transverse section to permit compression of the side members out of normal alignment, a mounting for the knife member having a flange portion extending forwardly from the main mounting portion to provide a seat internally thereof for the knife member, a corresponding depressed portion on the knife member adapted to engage the said shoulder portion so that in the seated position of the knife member, the outer projecting surface of the knife member will be substantially flush with the corresponding outer surface of the mounting member, the said knife member having a flange portion in a plane substantially transverse to the cutting edge of the knife for abutting a corresponding edge of the said mounting member, and a second flange portion at the interior of the mounting member adapted to engage the innermost edge of the knife member, a projection on each side of the mounting member and a depression on each side of the knife member adapted to engage the said projections on the mounting member to assist in holding the knife member in seated position on the mounting member.

10. In a turpentine hack and puller, a knife member curved in transverse section and having a forward cutting edge, a mounting member for the knife member, a projection on one of said members, a corresponding depression in the other of said members adapted to cooperate with the said projection to assist in holding the said knife member in place on the said, mounting member, the said knife member being of resilient steel so as to permit resilientlybending the said knife member into place on the said mounting member and means adapted to be engaged by a tool to bend the knife member sufficiently to permit engagement and disengagement of the said projection and depression.

11. In a turpentine hack and puller, a knife member of spring steel curved in transverse section, a mounting member for the knife member, one of said members having a projection and the other of said members having a corresponding depression adapted to cooperate with said projection so as to assist in holding said members in place relative to each other and engaging means on opposed surfaces of the knife member adapted to be securely engaged by a lever device for removing the knife member or positioning the same on the mounting member.

12. In a turpentine hack and puller, a knife member of resilient steel having a suitable temper to take and hold a sharp cutting edge thereon, said knife member being curved in transverse section to permit distortion of side portions thereof out of normal alignment without permanent distortion, a mounting member for the knife member, a projection on one of said members, a depression in the other of said members adapted to cooperate with the said projection to assist in holding the said knife member seated with relation to the said mounting member, the said members having abutting surfacesto take the thrust of the cutting stroke of the knife member when in seated position with relation to the mounting member, indentations on opposite surfaces of the knife member adapted to be engaged by opposite arms of a lever for removing the knife member from the mounting member or for seating the knife member on the mountin member to cause engagement of said projection and depression, the knife member being bent out of said normal alignment for seating or removing the same, being substantially undistorted in seated position. I

13. In a turpentine hack and puller, a knife member curved in transverse section, a mounting member for the knife member, said members having engaging abutting surfaces substantially parallel with the cutting edge of the knife member to resist the force of a cutting stroke, a projection on one of the said members and a corresponding depression interlocking therewith on the other of saidmembers; said projection and depression being located on opposite sides of the members away from the mid-portion so as to prevent canting action of the knife member and positioned so as not to project beyond the surface along which chips pass during the cutting stroke.

14. In a turpentine hack and puller, a knife member curved in transverse section, a mounting member for the knife member, said members having engaging abutting surfaces substantially parallel with the cutting edge of the knife mem ber to resist the force of a cutting stroke, a projection on one of said members and a corresponding depression on the other of said members, said projection and depression being located on opposite sides of the members away from the curved mid-portion of the knife member and interengaging in locked position without extraneous holding means applied to the said projection,

said knife member being of resilient steel to permit being bent sufficiently with relation to the mounting member to causelocking engagement and disengagement of the said projection and depression in the mounting and dismounting .of the knife member.

15. In a turpentine hack and puller, a knife on one of said members and a corresponding depression on the other of said members, said pro- 1 jection and depression being located on opposite sides of the members away from the curved mid-portion thereof, being so positioned as not to project in the interlocked relationv from the surface along which chips normally pass during a cutting stroke, at least one of said members being of resilient metal of a thickness to permit being deflected sufiiciently in mounting and dismounting the knife member tocause locking engagement and disengagement of the said interlocking means; i

16. A turpentine knife curved in transverse section and of resilient steel to permit distortion of the side members thereof out of the normal plane and having means located in the side members away from the mid-portion thereof adapted to engage cooperating means of a mounting member for the knife.

WILLIAM A. SESSOMS.

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