Welding jig for pipes
OwnerThomas E. Jasperinventor
Life of this patent
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Abstract
The present invention includes a welding jig having a first support plate and a second support plate rotatably connected to the first support plate. The second support plate has a template-shaped perimeter including arcuately shaped segments shaped to support pipe fittings of different sizes. By selectively positioning a particular segment and securing locking the particular segment in place, a particular pipe fitting such as a particular 90.degree. pipe elbow can be supported with one end resting on the selected particular segment and the other end resting on the first support plate. By this arrangement, particular pipe fitting can be supported in a predetermined and square position relative to a pipe, thus facilitating welding the particular pipe elbow to the pipe. This allows substantially a one-person welding operation.
Claims21
A welding jig for welding large diameter pipe fittings and pipes together, comprising:
- a first support plate shaped to abuttingly support one end of a pipe fitting thereon, said first support plate including an edge;
- a second support plate rotatably connected to said first support plate, said second support plate being oriented perpendicularly to said first support plate and being located proximate said edge of said first support plate so that portions of said second support plate extend above and below said first plate so that portions of said second support plate extend above and below said first plate, said second support plate including a template-shaped perimeter including segments thereof shaped to support thereon one end of one of a plurality of differently sized pipe fittings, said second support plate being rotatable so that a selected one of said segments can be positioned to support one end of a particular pipe fitting with the other end of the particular pipe fitting resting on said first support plate, whereby the particular pipe fitting can be supported in a predetermined and square position relative to a pipe and independent from the pipe, thus facilitating welding the particular pipe fitting to the pipe.
A welding jig comprising:
- a first fixture including:
- first means for supporting one end of a pipe fitting in a predetermined position relative to a pipe to which the pipe fitting is to be welded, second means for supporting the other end of the particular pipe fitting, said second means including a template having a perimeter shaped with segments adapted to support differently sized pipe fittings, said template being rotatable so that a selected segment can be positioned in a selected position relative to said first means to support the other end of the particular pipe fitting, and locking means for locking said template in the selected position;
- and
- a second fixture configured to independently support said pipe in a position adjacent said pipe fitting so that a uniform gap is defined therebetween, whereby the particular pipe fitting can be positioned relative to a pipe in a particular orientation with respect to the pipe without contacting the pipe so that the pipe fitting can be welded to the pipe.
A welding jig comprising:
- a planar first support plate;
- a planar second support plate oriented perpendicularly to said first support plate and located proximate said first support plate with portions being disposed above and below said first support plate;
- an axle disposed between said first and second support plate for rotatably mounting said first support plate to said second support plate;
- a releasable locking member movably mounted on one of said first and second support plates and locating means located in the other of said first and second support plates, said locking member being movable between a release position disengaged from said locating means so that said second support plate can be rotated and a locking position engaged with said locating means so that said second support plate is fixed in a selected position;
- said second support plate including a template-shaped perimeter including segments, each segment being adapted to support one end of a pipe fitting having a particular size while another end of the pipe fitting rests on said first support plate in a predetermined orientation, each segment being adapted to support a differently sized pipe fitting;
- and
- a vertically adjustable support positioning said first support plate at a desired height.
A welding jig as defined in claim 21 wherein said segments are shaped to support one end of a 90.degree. pipe elbow, whereby said first support plate can be positioned at a particular height relative to a pipe to which a selected 90.degree. pipe elbow is to be welded to, and said second support plate can be selectively positioned relative to said first support plate to hold the selected 90.degree. pipe elbow having a particular size in a desired orientation, thus allowing a single person to efficiently align and weld the selected 90.degree. pipe elbow to a pipe.
Dependencies are inferred from the claim text.