Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2142338A
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Individual
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Individual
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Priority to GB2142338ApriorityCriticalpatent/GB502067A/en
Publication of GB502067ApublicationCriticalpatent/GB502067A/en
502,067. Plywood tubes. LAMMERMANN, H. July 19, 1938, No. 21423. [Class 145 (ii)] [Also in Group XXVIII] Hollow aeroplane stays or other tubes built up from layers of wood veneer with glue, are compressed on to a former during manufacture by a rubber tube b rolled up on itself and then unrolled on to the wooden tube, the tube b being unrolled when the glue has set. The former may be made in several parts, one or more parts e remaining glued to the wooden tube to form a stay when the other parts c, d are removed.
GB2142338A1938-07-191938-07-19Improved manufacture of aeroplane stays or like hollow bodies
ExpiredGB502067A
(en)