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Publication numberUS1280785 A
Publication typeGrant
Publication dateOct 8, 1918
Filing dateMay 31, 1918
Priority dateMay 31, 1918
Publication numberUS 1280785 A, US 1280785A, US-A-1280785, US1280785 A, US1280785A
InventorsGeorge Mcconnell
Original AssigneeGeorge Mcconnell
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1280785 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




1,280,785. Patented Oct. 8', 1918.

awuemtoz dbrzga UNITED STATES PATENT onnion.



To all whom-it may concern:

Be it known that I, GEORGE MoCoNNnLL, a citizen of the United States of America, residing at Aberdeen, in the county of Grays Harbor and State of Washington, have invented certain new and useful Improvements in WVoodworking-Tools, of which the following is a specification.

This invention relates to wood working tools and more particularly to a cutting instrument adapted to cut a rabbet or mortise. While the present tool is particularly adapted for the above use in connection with ship building, it is, of course, tobe understood that it is susceptible to other uses.

One of the objects of the present invention is to provide a simple and practical wood working tool, which may be inexpensively manufactured and easily and rapidly operated. A further object is to provide a tool of the above character, especially adapted for the above purpose and capable of operation either with or across the grain or at an angle thereto in making direct cuts therein. A further object is to provide a tool of the first above mentioned character which will easily ride over rough surfaces and cut a mortise or rabbet of uniform depth at a single through operation. A further object is to provide an easily sharpened tool of the above general character adapted particularly for use in connection with the pneumatically operated tool retainers.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in the features of construction, combination of parts and in the unique relations of the members and in the relative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the views, of which Figure 1 is a side elevation of the tool;

Specification of Letters Patent.

Patented Oct. s. 1918.

Application filed May 31, 1918. Serial No. 237,439.

Referring now to these drawings in detail, 5 denotes the main body portion of the tool which is preferably hexagonal in cross section and made of forged steel. The forward or left hand part of this body member is bent upwardly, that is'relatively speaking, at an angle of approximately 15 and flattened to provide an under portion 6 having a curved forward portion 7 which permits the tool to ride easily over the rough surfaces of the wood. The rear part of the underside of the forward portion or near the apex of the angle is provided with a relatively downwardly projecting cutting instrumentality 8 of substantially elliptical cross section, or shape, having a forward cutting edge 10. This cutting member projects perpendicularly from the inclined under surface of the body member which acts as a guide and limits the depth to which the cutting tool operates. Thus, if this inclined under surface rests upon the surface to be mortised the cut will extend substantially the length of the projection 8 and a deeper out than the length of the cutting member is positively prevented.

The rear part of the body portion is provided with a hexagonal end 11 and an annular collar 12 adapted to coact with or be received in a tool retainer of a pneumatic hammer. These parts however are of well known construction and a detailed description is believed to be unnecessary.

As previously explained, the purpose of this tool is to out out a rabbet or mortise in the frame of a wooden vessel and when used by an Ingersol-Rand pneumatic hammer has made a 34 cut diagonally across the grain of the wood in thirty seconds. These cuts are made about an inch or an inch and a half apart, thereby to loosen up the wood between the marginal lines after which a second tool, illustrated and described in a oopending application executed and filed of prior to calking the same which work had heretofore been done entirely by hand driven tools. It is believed from the above description that the construction, operation and method of use of this device will be clear to those skilled in the art. The invention is of simple and practical construction and adapted to accomplish, among others, all of the objects and advantages herein set forth.

Without further analysis, the foregoing will so fully reveal the gist of this invention that others can by applying current knowl edge. readily adapt it for various applications without omitting certain features that, from the standpoint of the prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention,

and therefore such adaptations should and are intended to be comprehended within the meaning and range of equivalency of, the following claims. I

I claim:

1. In a Wood working tool of the charac ter described, in combination, a body meniber having a forwardly and upwardly inclined portion with a plane under surface bent at an angle of approximately 15 with respect to the body portion,'a shank and collar adapted to be received by a vpneumatic Copies of this patent may be obtained for five cents each, by addressing the tool retainer and a flat cutting instru1nentality located on said upwardly extending forward portion and connected therewith at substantially the-apex of the angle with the body member. In a wood worki g 6001 Of hfifi disposed integrally formed cutting inst'rumentality located on said upwardly extend-- ing body portion and connected therewith at substantially the mom Of the angle with the body member, and means including a V shank and a collar whereby said device may be carried by a pneumatic tool retainer.

In testimony whereof I aflix my signature in the presence of two witnesses.




Commissioner of Patents,

Washington, D. C.

Referenced by
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US8070750 *Dec 6, 2011Depuy Mitek, Inc.Tunnel notcher and guidewire delivery device
US9265519Oct 27, 2011Feb 23, 2016Depuy Mitek, LlcTunnel notcher and guidewire delivery device
US20050203523 *Mar 5, 2004Sep 15, 2005Wenstrom Richard F.Jr.Tunnel notcher and guidewire delivery device
U.S. Classification30/167
International ClassificationB27G17/08
Cooperative ClassificationB25D3/00