|Publication number||US678643 A|
|Publication date||Jul 16, 1901|
|Filing date||Feb 20, 1901|
|Priority date||Feb 20, 1901|
|Publication number||US 678643 A, US 678643A, US-A-678643, US678643 A, US678643A|
|Inventors||Michael Francis Clarke|
|Original Assignee||Michael Francis Clarke|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (4), Classifications (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
No. 678,643. Patented July 16, MIL M. F. GLARIKE.
lApplication filed Feb. 20, 1901.)
IN VE N TOR jfibiaefihr/w A TTORNEYS WITNESSE "m: "owns warm: co, moraunio. wnwnmou. u, c.
lUnrrnn dramas Farnwr @rrrcn;
MICHAEL FRANCIS CLARKE, OF FARMINGTON, TERRITORY OF NEW MEXICO.
SPECIFICATION forming part of Letters Patent N 0. 678,643, dated July 16, 1901..
Application filed February 20, 1901. Serial No. 48,083. (No model.)
To all whom it may concern:
Be it known that I, MIoHAnL FRANCIS CLARKE, a citizen of the United States, and a resident of Farmington, in the county of San Juan and Territory of New Mexico, have invented a new and Improved Marking-Tool, of which the following is a full, clear, and exact description.
The invention relates to woodworking-tools; and its object is to provide a new and improved m arking-tool which is simple and durable in construction, arranged for convenient handling by the operator, and adapted to form a perfect mark on the wood when drawn along an edge of a carpenters square, straight-edge, or like instrument.
The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.
A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.
Figure 1 is a perspective View of the improvement. Fig.2 is a plan view of the same. Fig. 3 is an end View of the same, and Fig. 4 is a cross-section of the same on the line 4 4 in Fig. 2.
The improved marking-tool consists, essentially, of a shank A, preferably made triangular in cross-section and carrying at one end a handle B and formed at its other end with an integral head 0. The head C has its forward face beveled downward and sidewise to form a point 0, adapted to cut into the wood when the tool is drawn along a square, straight-edge, or like instrument. The head is also provided with a cutting-lip G which projects beyond the plane of one of the sides of the shank A, as in plainly indicated in Figs. 1 and 2, the cutting-lip increasing in width from the point C to the rear end thereof. The bevel of the head 0 forms edges G 0 C of which the edge 0 is in alinement with the front face A of the shank A and extends from the point C upwardly and rearwardly, and the edge G is the cutting edge of the lip (3 while the edge 0 extends on the topof the head to andacross the lip C as is plainly indicated in Fig. 2. By the arrangement described the tool can be readily drawn along a T-square, straight-edge, or similar instrument over the wood to be operated upon by the carpenter, so as to make an exceedingly sharply-defined marking-line to enable the carpenter to cut the wood properly and produce an accurate joint.
In using the device the operator takes hold of the handle 13 and places the front or working face A against the edge of the T-square, straight-edge, or the like and then pushes the tool forward to cause the point and edges 0 G to enter the wood and cut a groove with a vertical wall in alinement with the edge of the T-square and with the bottom of the groove beveled from the lower end of the wall to the top surface of the wood. The depth and width of the groove depend on the pressure exerted by the operator on the handle B. Now by inserting the saw into the groove and keeping it against the vertical wall of the groove while sawing a very accurate cut is made to insure proper joining.
For very heavy timber the cutting-lip C is brought into use to gouge out the timber on the face thereof along a straight-edge to produce a recess of sufficient depth and width for the entrance of a crosscut-saw employed for cutting the timber along the joint-mark. Thus the crosscut -saw readily enters the Wood as it is guided in the recess, which latter extends along the proper joint-line.
Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A marking-tool, com prising a shank having a head at one end, the head having its end face beveled and terminating in a point, and a cutting-lip on the head extending from the point rearwardly along one side of the head, as set forth.
2. A marking-tool having a handled shank and a head thereon, the latter having its end face beveled forward and sidewise, and. a cut ting-lip 011 the head extending from the point rearwardly along one side of the head, as set forth.
3. A marking-tool having a handled shank and a head thereon, the latter having its end face beveled forward and sidewise, and a cutting-lip 0n the head extending from the point rearwardly along one side of the head, said cutting-lip increasing in width from the point to its rear end, as set forth.
4. A marking-tool having a handled shank and a head thereon, the shank being approximately triangular in cross-section, and a head having its end face beveled forward, downward and sidewise, as set forth.
5. A marking-tool having a handled shank and a head thereon, the shank being approximately triangular in cross section, a head having its end face beveled forward, downward and sidewise, and a cutting-lip on the head, extending from the point thereof rearwardly beyond one side of the shank, as set forth.
6. A marking-tool, comprising a shank,and a head at one end of the shank, the head having its end face beveled forward and sidewise to form a point, the said bevel forming an edge in alinement with and forming the ter mination of the flat front face of the shank,
and extending from the point upwardly and rearwardly, as set forth.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
MICHAEL FRANCIS CLARKE.
W. A. HUNTER, J. B. DERIOK.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2493128 *||May 21, 1945||Jan 3, 1950||Everett Fulkerson Volney||Photograph negative etching tool|
|US6264628||Mar 2, 1999||Jul 24, 2001||Profoot, Inc.||Set depth nail notcher and method for treating nail fungus|
|US6287276||Aug 6, 1998||Sep 11, 2001||Profoot, Inc.||Set depth nail notcher and method for treating nail fungus|
|US6572580||Apr 19, 2001||Jun 3, 2003||Profoot, Inc.||Set depth nail notcher with patch system and method for treating nail fungus|