Description
Object description
Comprises 52 individual pieces. Card documentation found within box.
Physical description
manufacturing stages of cartridge case & primer & bullet & original caption
one near-complete set and a second partial set of manufacturing 'draws', showing the stages of manufacture of a .303 cartridge case, its primer and a cupro-nickel Mark VII bullet. Missing is the final stage, number 36, a complete cartridge. The second, partial, set includes stages 17, 19, 20, 23, 28, 29, 30, 31, 32, 33, 34 and 35.
Label
Draw sets almost certainly made for the Imperial War Museum at the Royal Laboratory, Woolwich, in 1928.
1) headstamp
2) original typed caption
1) R broad arrow L 28 // VII
2) 1. Brass strip from which Cartridges case made. // 2. Disc cut from strip and Cup formed from it. // 3. 1st drawing operation on Cup. // 4. 2nd drawing operation. // 5. 1st indenting operation to form Cap Chamber. // 6. 3rd drawing operation. // 7. 4th drawing operation. // 8. Trimming. // 9. 2nd indenting operation. // 10. Operation to form Head of Case. // 11. Operation to pierce the Fire-holes. // 12. Semi-annealing to avoid stresses in the metal. // 13. 1st tapering operation to form Neck. // 14. Stamping Date, Mark, Factory on Case. // 15. 2nd tapering operation. // 16. Complete Case after Head has been turned and inside reamered. (sic) // 17. Cupro-nickel strip from Envelope of Bullet made. (sic) // 18. Disc cut from strip and Cup formed from it. // Note: The metal has to be handled very carefully // throughout these processes to minimise the // risk of split and separated cases. // 19. 1st drawing operation on cup. // 20. 2nd drawing. // 21. 3rd drawing. // 22. Envelope after trimming. // 23. Envelope after 1st forming. // 24. Envelope after 2nd forming. // 25. Aluminium Rod from which Point of Bullet cut. // 26. Aluminium Bullet Point. // 27. Lead and Antimony Rod from which Core of Bullet cut. // 28. Lead and Antimony Bullet Core. // 29. Bullet after Point and Core have been inserted in Envelope. // 30. Bullet after 1st pressing on base. // 31. Bullet after 1st pressing and stamping. // 32. Bullet after cannelure has been formed on it. // 33. Finished Bullet. // 34. Copper strip from which Cap made. // 35. Disc cut from strip and complete Cap. // 36. Complete .303" Mark VII round of S.A.A. after Bullet and Case have been assembled.