Tubular burner construction and method of making the same
First Claim
1. In a method of making a tubular burner construction having wall means defining a longitudinal fuel receiving chamber therein, said wall means having port means provided therein and leading from said chamber to the exterior of said burner construction for issuing fuel from said chamber, said wall means comprising two separate substantially like parts secured together at open ends thereof to define said tubular construction, the improvement comprising the steps of stamping each port from the same sized blank with a first pair of dies so that each part is initially substantially identical and has an outer peripheral flange means at said open end thereof, forming said port means with a second pair of dies in only one of said parts and inboard of said open end thereof while at the same time cutting away part of said flange means with said second pair of dies so that the peripheral flange means of said one part is shorter throughout its width than said peripheral flange means of the other of said parts, and securing said flange means of said parts together by turning said flange means of one of said parts over said flange means of the other of said parts and crimping said flange means together to seal said flange means to each other.
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Accused Products
Abstract
A tubular burner construction having a wall defining a longitudinal fuel receiving chamber therein, the wall having ports provided therein and leading from the chamber to the exterior of the burner construction for issuing fuel from the chamber. The wall comprises two separate substantially like parts secured together at open ends thereof to define the tubular construction, the ports being provided in only one of the parts and inboard of the open end thereof.
50 Citations
10 Claims
- 1. In a method of making a tubular burner construction having wall means defining a longitudinal fuel receiving chamber therein, said wall means having port means provided therein and leading from said chamber to the exterior of said burner construction for issuing fuel from said chamber, said wall means comprising two separate substantially like parts secured together at open ends thereof to define said tubular construction, the improvement comprising the steps of stamping each port from the same sized blank with a first pair of dies so that each part is initially substantially identical and has an outer peripheral flange means at said open end thereof, forming said port means with a second pair of dies in only one of said parts and inboard of said open end thereof while at the same time cutting away part of said flange means with said second pair of dies so that the peripheral flange means of said one part is shorter throughout its width than said peripheral flange means of the other of said parts, and securing said flange means of said parts together by turning said flange means of one of said parts over said flange means of the other of said parts and crimping said flange means together to seal said flange means to each other.
Specification