US2083123A - Combination planing and glazing tool - Google Patents

Description

June a, .1937. A. B. QUICK 2,083,123

QQQIBI'ilATION PLANING AND GLAZING TOOL Filed May 7, 1936 5 Z 0 'INVENTOR {ATTORNEYS A Patented June 8, 1937 UNITED STATES CVOYMIBENATION PLANING AND'GLAZING Y Toon AugustusBertram Quick, East Norwich, Y. Afpplication May 7, 1936, Serial' No;' 78,299"' 1 Claim.

The present invention is directed to a tool which is particularly adapted for use in woodworking and glazing operations, and is an improvement over the well known woodworking chisel. V

' Woodworking chisels are made in many different sizes and shapes, but the most commonly known type consists of straight blade having a cutting edge produced by a single bevel on the leading edge. Another type of chisel, known as the lock mortising chisel, is provided with a blade having a curve of short radius adjacent the cutting edge. Both typesof chisels are used for but one type of woodworking operation, and that is for gouging out the wood to form grooves or mortises in the flat surface of the wood. Because of the fact that the cutting edge is formed by the intersection of a, ground bevel with a flat face of the tool, such chisels are not adapted to be used as planingimplements. Application of pressure to the tool, even though it is laid almost flat upon a surface, will cause the edge to dig into and gouge the surface.

The present invention is directed to the provision of a tool which may be used in the same manner as a chisel, but in addition, can be used as a planing tool and has other uses hereinafter set forth.

In the placement or replacement of glass in frames, commonly known as glazing, it is necessary to align the surfaces of the frame so that the sheet of glass will be supported without strain at substantially all points about its edges. A small planing tool has heretofore been used for aligning the surfaces of the frame. When the glass is fitted in the frame, it is held therein by triangular thin pieces of metal, known as glaziers triangles, or by small brads, in engagement with the glass. Because of the size of these holdthe process of driving them into the frame is a most tedious one. The glaziers planing tool is not satisfactory as a hammer. An ordinary'chisel or a putty knife cannot be used unless the glazier is highly skilled because the chisel or putty knife presents substantially a point area for use as a striking surface. The ordinary hammer is little better because the curvature of the hammering face is of such small radius that only a limited driving area is presented when the hammer is laid against the glass.

The tool embodying the present invention finds particular usefulness in the glazing work. By its improved construction it can be used in the stead of the planing tool heretofore used and ing means and their juxtaposition to the glass,

More specifically, my improvement consists in the provision of a transversely fiat longitudinally curved blade having a chisel edge, the blade extending in reversely curved form from the cut} t ng edge to the handlewith which it is provided. The blade curvature is so proportioned that when the blade is laidagainst an object to be planed, the cutting edge cannot diginto the wood. Also, the curvature of the blade is such that an elongated. striking surface is presented for driving brads or giaziers triangles in engagement with glass in frame.

For a better understanding of the construction of my improved tool, reference may be had to the accompanying drawing, in which:

Fig. l is a perspective view of a tool embodying my invention.

Fig. 2 is a view in elevation of the tool in as a planing device.

Fig. 3 is a perspective view of the tool in use as a means for driving glaziers triangles andbrads; and

Fig. 4 is a diagrammatic showing of the curvature of the blade of the tool, the permissible variations in curvature being shown in dotted lines. I

Illustrative of one embodiment of my invention, Figure l discloses a tool A consisting of a handle 2 having a socket 4 enclosed bya ferrule 6, and receiving a tang 8 on the blade Ill. The blade i9 is provided with a cutting edge 12, formed by the intersection of bevel it with a face of the blade. The blade lfl adjacent the cutting edge l2 and'throughout aboutone-third of its length, generally indicated as I, is curved about a center spaced from the beveled face of the blade, as best shown in Figures 2 and 4. The remainder II of the blade ill, to the point of attachment with the handle, is reversely curved, the curvature varying within small limits as shown in the dotted lines in Figure 4, but being such that a tangent at any point throughout either curve I or II is at less than a 30 angle to a tangent at any other point on the curves. The axis of the handle is inclined at an angle of less than 15 to a tangent to the curve at any point along the blade l B, sothat upon placement of the blade I0 upon a surface tangent to the curve adjacent the edge l2, the handle 2 is at an acute angle of less than 15 to the surface but spaced therefrom.

As best illustrated in Figure 2, when it is desired to use the tool A as a planing implement use the cutting edge is laid on the surface of the object to be planed, and the tool rocked slightly on its curved face, to produce the desired depth of cut. Because of the curvature of the tool, there will be but one angle at which the handle 2 can be placed to produce the desired planing action, and because of engagement of the blade I0 rearwardly of edge I2 with the surface of B, the edge will be prevented from digging into or gouging the wood. This is of great advantage to those not skilled in woodworking because the tool A almost automatically aligns itself properly. The angle of therhandle 2 with relation to the object B is such that the force applied has almost its entire component in a direction in the plane of the-surface of the object B, this also preventing the removal of too thick a shaving. It will be understood, of course, that by incline ing the tool A at a greater angle, it can be used in the same manner as the ordinary chisel.

As shown in Figure 3, the tool A is highly satisfactory as an implement for driving glaziers triangles l6 or brads l8 into frames. such as C as a holding or attaching means for glass D.

The long, gradual curvature of blade I0 adjacontact with the glass D, the trianglesor brads may be easily driven into the frame, without ations in the relations of the curvatures of the blade of the tool, that the size of the blade can be varied and that there will be other uses for r the tool than those which have hereinbefore been enumerated. Therefore the construction disclosed should be considered as illustrative only and, not as limiting the scope of the appended claim.

I claim: 7

In a Woodworking and glazing tool suitable for planing, chiseling and hammering, an elongated transversely flat blade, a transverse substantially straight cutting edge at one end of the tool, and a handle on the opposite end of the blade, the blade being longitudinally reversely curved from the cutting edge to adjacent the handle, a tangent to the curve at any point along its length being at an acute: angle of less than 30 to a line tangent to any other part of the curve.

AUGUSTUS BERTRAM QUICK.

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