37. Hele-Shaw variable stroke pump engine Collection: Early 20th Century Engineering Lantern Slides Set: Cramer's Date: undated Format: Image Agent: unknown
38. Man reading to workers assembling cigars in a factory in Cuba. Collection: Early 20th Century Engineering Lantern Slides Set: Growth Location: Cuba Date: undated Format: Image Agent: unknown
39. Diagram of hydraulic windlass with hydraulic pump equipped with stroke regulator. Collection: Early 20th Century Engineering Lantern Slides Set: Cramer's Date: undated Format: Image Agent: unknown
40. Men using instruments to measure effect of using brakes on fuel level. Collection: Early 20th Century Engineering Lantern Slides Set: Growth Date: undated Format: Image Agent: unknown
41. Hand operated filling pump Collection: Early 20th Century Engineering Lantern Slides Set: Cramer's Date: undated Format: Image Agent: unknown
42. Electro-hydraulic steering gear engine Collection: Early 20th Century Engineering Lantern Slides Set: Eastman Date: undated Format: Image Agent: unknown
43. Electro-hydraulic steering gear engine Collection: Early 20th Century Engineering Lantern Slides Set: Eastman Date: undated Format: Image Agent: unknown
44. Picture showing the straight-line method of controlling forms reduced the number from 21 to 10 forms. It also reduced the amout of paper from 67,000 to 3,000 annually. Collection: Early 20th Century Engineering Lantern Slides Set: Plant Layout Date: undated Format: Image Agent: unknown
45. Plant layout showing conveyor belt configured for 12 workers, and another layout doing the same work, configured for 6 workers. Collection: Early 20th Century Engineering Lantern Slides Set: Plant Layout Date: undated Format: Image Agent: unknown
46. Plant layout showing conveyor belt configured for 12 workers, and another layout doing the same work, configured for 6 workers. Collection: Early 20th Century Engineering Lantern Slides Set: Plant Layout Date: undated Format: Image Agent: unknown
47. Drawing of 5 floors in a plant in relation to Main Street. Collection: Early 20th Century Engineering Lantern Slides Set: Plant Layout Date: undated Format: Image Agent: unknown
48. Straight-line method of manufacturing a shaft by shifting work to all on one floor. Collection: Early 20th Century Engineering Lantern Slides Set: Plant Layout Date: undated Format: Image Agent: unknown
