Joints and connections – Rigid angle coupling – e.g. – elbow or u – etc.
Patent
1986-04-01
1988-04-26
Reese, Randolph A.
Joints and connections
Rigid angle coupling, e.g., elbow or u, etc.
403231, 403382, 403403, 4034061, F16B 1214
Patent
active
047400986
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a joint for use in joinery manufacture and a method of forming the same, which has particular application in the building and wood-working trades. Moreover, the particular joint herein described relates to a modernization of the traditional mortice and tenon joint which has been used in the joinery industry for many hundreds of years. Notwithstanding the advent of modern machinery to substantially improve the shaping of joinery stock and maintain cost effectiveness, there has been no suitable alternative to the manufacture of strong joints other than the traditional mortice and tenon joint. A difficulty with the mortice and tenon joint is that it does not readily offer itself to easy machining techniques and further necessitates the use of reinforcement to provide sufficient strength in certain situations.
It is an object of one form of the present invention to provide a joint in joinery manufacture which has strength characteristics comparable to a mortice and tenon joint.
It is a preferred object of the one form of the present invention to provide an improved joint which is a suitable alternative to the traditional mortice and tenon joint with respect to considerations of strength.
It is a further preferred object of the one form of the present invention to provide an improved joint which can be easily produced using modern machining techniques.
It is another preferred object of the one form of the present invention to provide an improved joint having superior strength characteristics in comparison to the traditional mortice and tenon joint.
SUMMARY OF THE INVENTION
In one form the invention resides in a joint for jointing two elongate members transversely to each other comprising: a first member provided with an end face; a second member provided with a pair of generally opposed side faces; a bracket means having a pair of flange portions disposed substantially transversely to each other; and a fixing means; said bracket means to be fixedly mounted to said end face such that one flange portion extends substantially parallel to the longitudinal axis of said first member and in juxtaposition therewith, and the other flange portion provides an outer projection from the general plane of said end face; said one side face having a part thereof to receive said end face and other flange portion, said part being complementary to said end face and having a recess to accommodate the outer projection of said other flange portion; wherein the first member is buttingly jointed to said part of said one side face of the second member by said fixing means clampingly engaging said second member to said other flange portion and wherein said other flange portion and said recess operate to oppose rotational movement of said first member about its longitudional axis relative to said second member.
Preferably, the other flange portion overlies some of said end face to form the outer projection on said end face.
Preferably, the fixing means is a threaded bolt having a head and shank portion, said second member is provided with a transverse hole in the region of said part which extends between said opposed side faces, and said other flange portion is provided with a threaded hole which is positioned to register with said transverse hole, whereby said fixing means is receivable within said holes such that said head portion engages the other side face and the shank portion threadedly engages the other flange portion so as to clampingly engage the members together.
Preferably, the first member is provided with a longitudinal recess on one side face thereof to extend transversely to the other flange portion, said longitudinal recess defining a void inwardly of said threaded hole to accommodate any extension of said shank portion of the fixing means.
Preferably, the longitudinal recess is provided with a longitudinal groove to be axially aligned with said threaded hole, the width of said groove being approximate to the diameter of said threaded hole to provide a further engag
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Cuomo Peter M.
Reese Randolph A.
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