▁to ▁the ▁factory ▁In ▁ 1 9 2 5 , ▁construction ▁began ▁on ▁the ▁fifth ▁and ▁largest ▁addition ▁to ▁the ▁original ▁Stra ube ▁factory . ▁The ▁architect ▁was ▁J . T . ▁H utton ▁& ▁Son , ▁the ▁son ▁being ▁William ▁St ur geon ▁H utton ▁( 1 8 9 0 – 1 9 7 5 ). ▁The ▁structure ▁was ▁four ▁stories ▁with ▁a ▁bas ement . ▁The ▁new ▁addition ▁was ▁devoted ▁largely ▁to ▁the ▁manufact urer ▁of ▁grand ▁and ▁re - produ cing ▁grand ▁pian os . ▁ ▁June ▁ 1 9 2 5 , ▁Stra ube ▁moved ▁into ▁the ▁new ▁plant . ▁The ▁new ▁plant ▁added ▁ 7 0 , 0 0 0 ▁square ▁feet ▁of ▁manufact uring ▁space ▁and ▁provided ▁a ▁suite ▁of ▁new ▁executive ▁offices . ▁The ▁total ▁floor - space , ▁including ▁the ▁addition , ▁was ▁about ▁a ▁hundred ▁and ▁si xty ▁thousand ▁square ▁feet . ▁The ▁new ▁space ▁was ▁especially ▁designed ▁for ▁a ▁new ▁unit ▁that ▁could ▁produce ▁ 2 , 5 0 0 ▁Stra ube ▁grands ▁a ▁year ▁to ▁meet ▁demand . ▁William ▁G . ▁Bet z ▁– ▁Stra ube ' s ▁plant ▁super int endent ▁since ▁ 1 9 1 7 , ▁piano ▁design ▁engineer , ▁and ▁invent or ▁who ▁was ▁highly ▁regarded ▁by ▁the ▁industry ▁– ▁had ▁spent ▁several ▁years ▁perfect ing ▁the ▁construction ▁and ▁design ▁of ▁the ▁new ▁Stra ube ▁grands . ▁Stra ube ▁also ▁h ired ▁William ▁David ▁Mc Il wr ath ▁( né ▁Mc Il w ra ith ; ▁ 1