US2358997A - Woodworking tool - Google Patents

Description

Sept. 26, 1944.

R. F. FRITZ WOODWORKING TOOL Filed March 28, 1942 ROBERT F PR/TZ INVENTOR ATTQRNEY Patented Sept. 26, 1944 ururso STATES PATENT OFFICE 2,358,997 WoODWORKING TOOL Robert F. Fritz, Walla Walla, Wash.

Application March 28, 1942, Serial No. 436,561

1 Ciaim. (o1. 145l9) My invention relates to a woodworking tool and Q I I more particularly of the type known as a plane which is a tool manually passed over the face of material to be cut, reduced or smoothed, and supports an inclined blade having acutting edge disposed below a work-engaging face for cutting the face of the material. More particularly, my invention resides in the provision of a novel and useful handle means for such a tool.

It is an object of the invention to provide an elongated handle attached to a plane body and extending rearwardly and upwardly therefrom in a direction angular to the sole-face of the plane.

Another object of the invention is providing handle means attached to a plane body and extending rearwardly and upwardly therefrom in a direction angular to the sole-face of the plane and which is capable of being elongated or extended to facilitate the use of the plane.

A further object of the invention is to provide handle means of the nature mentioned in the foregoing objects which means is so attached to the plane body that it may be pivoted about a point to permit increased effective use of the plane.

Still another object of the invention lies in the provision of handle means on a plane which is so formed and adapted that it extends rearwardly and upwardly from behind the plane blade, and which may be incorporated in a plane without materially altering the plane structure.

A still further object of the invention is the incorporation of all the foregoing objects in a s'ngle, practical and useful device.

Other objects and advantages of the invention will be more apparent during the course of the following description wherein is set forth the essential elements of a preferred and an alternate form of my invention.

Changes and alterations are contemplated to meet varying conditions without departing from the scope and spirit of this invention, as set forth in the subjoined claim.

In the drawing:

Fig. 1 is a vertical sectional view taken longitudinally through a plane body and its handle means,

Fig. 2 is a similar sectional view taken through the tool body on a nearer plane than in the showingof Fig. 1,

Fig. 3 is a perspective view of a plane body,

Fig. 4 is a perspective View of my improved handle as it appears detached fromv the plane body,

Fig. 5 is a sectional view taken on line t5 of Fig. 2,

Fig. 6 is a perspective view of the handle according to my invention adapted to be pivotally mounted in a plane body,

Fig. 7 is a longitudinal sectional view taken through the modified form of my invention wherein the handle of Fig. 6 is used, and

Fig. 8 is a fragmentary side view of the tool engaging end of the handle member of Fig. '7.

The numeral to designates a plane body having side flanges H and i2 and the sole piece it} through which is usually formed the slot It to permit the downward protrusion of the blade l5 from above the sole piece. Blade it: rests, on its back side, against suitable support means such as lugs iii, it which are usually spaced apart and mounted to the rear of slot it. A fulcrum pin ll laterally mounted in the side flanges extends across the channel formed by the flanges and the sole piece and above the slot. A clamp lever i8 is fitted between the fulcrum pin and the front face of the blade and has a screw it or other means for forcing one or the other end away from the plane blade to clamp the same securely against the support means.

My handle comprises an insert member 26 having a rear shank 2i. The insert member is adapted to be positioned between the lugs l6 and be secured thereto by a pin 22 that passes through the hole 23 in the insert member.

On the rear end of the shank 2i, which is sub stantially cylindrical, I mount the grip piece 2A which is also substantially cylindrical and is adapted to be manually engaged by an operator of the tool. One excellent form of attaching the grip iece to the shank is by counter-boring one end at 25 to fit the shank and then to join the two elements by means of a screw 26 anchored in one or the other to draw the parts together or force them away from each other.

In the showing of Fig. 1 the shank and grip piece are drawn together and in Fig. 2 they are extended to increase the overall length of the handle as may occasionally be desired.

The insert piece is shown to be pointed vertically to fit the angle formed between the blade and the sole piece of the plane. Strain upon the pin 22 can thus be eliminated and its only function is to hold the parts together and not against twisting which is taken by the more rugged lugs and other elements of the plane body.

In Figs. 6 and 7 a modified form of my invention is shown. The primary difference resides in the formation of the insert member on Ordinarily, the face 30 is concentric with the hole 23 through which attaching pin 22 passes. By these means the modified handle may be pivoted about the axis of the pin 22 within the limits defined by the top edge of the blade or by the shank at 3| abutting against the sole piece. This movement is indicated in dashed lines in Fig. 7 wherein the fiat surface 4| shown in Fig. 8 abuts the rear of plate l to stop upward movement beyond the dashed line position of Fig. ,7.

It will be seen that my handle means extends rearwardly and upwardly from the plane body from a point behind the lane blade. The direction of the handle means from the plane body can very well be described as being at an angle to the face of the sole-piece. One excellent example of use of my invention may be obtained in small finishing planes that are difficult to grasp firmly and to steer accurately in doing work to close tolerances. With my handle, such a plane is very easily engaged and guided by hand in a natural manner and the use of it is greatly facilitated.

In using a plane of the nature shown in the drawing it is customary and advisable to place the forefinger upon the depression 32 that is positioned in advance of the blade of the plane. A certain guiding control is thus obtained and, as well, varying degrees of pressure may be applied to facilitate the planing operation. Because various operators have different sized hands and different lengths of fingers, the handle being adjustable lengthwise to accommodate such condithe plane as a whole is more easily and comfortably grasped for accurate painstaking work.

It is preferable that the fit of the insert member in the case of the swinging handle be friction tight with the lugs on the plane body so that the handle will remain in any position to which it is swung by the operator.

Having thus described my invention, I claim:

In a woodworking plane of the type having a frame provided with a pair of lugs upstanding from the inner bed thereof, said lugs being provided with like downward and forward sloping inclined surfaces defining the angle of set of a blade resting thereon; the combination comprising: a handle having forwardly convergent upper and lower surfaces, said lower surface resting upon the inner bed of said frame between the upstanding lugs, said upper surface corresponding in inclination with the forward sloping faces of said lugs, a pin passing through said lugs and said handle between the upper and lower inclined surfaces to retain the handle on the frame in assembledrelation, said upper surface terminating in an angularbreak adjacent said pin and joining a second surface obtusely related thereto, and a curved surface tangential with the lower inclined surface of the handle and extending forwardly therefrom in an upward sweep having a center of tions is very useful. In addition it is found that inclined surface resides from the axis of said pin to permit the rocking of the handle with respect to the frame on occasion.

ROBERT F. PRITZ.

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