31. Also in 1895 Berliner replaced the hard rubber used to make the discs with a shellac compound. 32. As he spoke, prison guards armed with strips of hard rubber herded inmates into a food line. 33. Celluloid gradually replaced hard rubber , which enabled production in a much wider range of colors and designs. 34. As the howitzer was designed for horse towing, it used an unsprung axle and hard rubber tires. 35. It was an important center for other hi-tech items such as hard rubber products and electrical goods. 36. The Hard Rubber Company eventually merged with other businesses and became the American Hard Rubber Company in 1898. 37. The Hard Rubber Company eventually merged with other businesses and became the American Hard Rubber Company in 1898. 38. Forty-odd years later, he can still lose and find himself with a stick and a hard rubber disc. 39. With a compression faucet the handle turns a spindle that presses a hard rubber washer into an opening. 40. Most were manufactured with hard rubber grips though wood, pearl or ivory could be had for additional cost.
