Schjeldahl Entrepreneur Records, 1901-2002
Collection Overview
Title: Schjeldahl Entrepreneur Records, 1901-2002
ID: OGLMC1433
Primary Creator: Schjeldahl, Gilmore T. (1912-2002)
Extent: 7.5 Linear Feet
Date Acquired: 09/29/2001. More info below under Accruals.
Subjects: Business and Industry
Languages: English
Abstract
Scope and Contents of the Materials
The Schjeldahl Entrepreneur Records have been divided into six series as follows:
Series 1: Sheldahl, Inc.: General Business Records
Series 2: Sheldahl, Inc.: Designs, Patents, and Products
Series 3: G.T. Schjeldahl's Other Companies
Series 4: G.T. Schjeldahl, Personal
Series 5: Photographs
Series 6: Films
Collection Historical Note
The legacy of Gilmore T. Schjeldahl (Shelly) began in 1948 when he created a bag making machine in the basement of his Minneapolis home. Herb Harris invested $100 in the venture, which enabled Shelly to fill his first order for large bags to be used as barrel liners for pickles, beginning a new business called Herb-Shelly, Inc. In 1949, the company moved from Shelly's basement to a small shop in Farmington, MN. By 1954, the company had $500,000 annual sales and 100 employees. The company started experimenting with lamination at this time, researching adhesives for a new flexible Dupont polymer called Mylar. The company was also involved in the fabrication of a balloon for the Office of Naval Research at the University of Minnesota. In May of 1954, Herb-Shelly was acquired by Brown and Bigelow, a St. Paul advertising products firm. Shelly resigned and left the company on January 8, 1955.
On January 21, 1955, Shelly began making plans for a new company to be located in the basement of the Medical Arts building in Northfield, MN. The company secured a contract in April 1955 to create atmospheric research balloons made with Mylar polyester film, held together with an adhesive system that Shelly developed. On September 1, 1955, the G.T. Schjeldahl Company (the Company) went public. In addition to balloons, the Company manufactured bag-making machines and heat-sealing adhesive tape. Eventually the G. T. Schjeldahl Company began developing a line of adhesive tapes for polyester bonding called Schjel-Bond (GT100, GT200, GT300, and GT400). Early in the Company's history two key individuals were hired, Dick Slater as project engineer and Jim Womack as a salesman. In December 1955, the G. T. Schjeldahl Company shipped its first automatic side-weld polyethylene bag-making machine to the Chase Bag Company in Los Angeles.
During this time, the G. T. Schjeldahl Company was divided into the Mechanical (packaging machinery) and the Polyester Film (balloons, special fabrication, and Schjel-Bond) Divisions. It sold more than 40 Mylar polyester stratospheric balloons by February 1956. The Company's balloons received national acclaim when one balloon climbed 27 miles into the air (a record), beginning in Minnesota, and traveling over seven states for almost three days before landing in a field in Kentucky.
The plastics were developed for more commercial use in "Schjeldomes," which were air- supported buildings. They only cost 98 cents per square foot and could be seen covering a swimming pool at Lutsen Resort on Lake Superior, an office and display center, and a storage building at Dupont's laboratories, to name just a few. In 1958, the G. T. Schjeldahl Company moved to a new location at the north edge of Northfield, and built a 340 foot long air-supported factory called the "Schjel-Mile." Eventually, the entire 54 acre operations center was called "Schjel-Town," and contained two Schjel-Miles, a factory and other small buildings, and a general office and laboratory.
Many federal government sponsored programs, such as Echo, PAGEOS, Pegasus, ROBIN, and ROSE, depended on the Company's research for their success. Some of the processes that Shelly learned from working on these government projects are still used in the Company's circuitry and other products.
The G. T. Schjeldahl Company received national fame for designing and building Echo I, a communications satellite which bounced television and radio signals back to earth, making coast to coast transmission of television possible. This "satelloon" was launched from Cape Canaveral on August 12, 1960, and was the largest object ever sent into orbit at that time. It was America's way of competing with the Russian satellite Sputnik; however, unlike Sputnik, Echo I could be seen from earth, and was followed by Americans and newspapers across the country. Echo I enabled America to create a satellite-based global telecommunications network.
The G.T. Schjeldahl Company also made the laminate and adhesive materials for the Polaris submarine missile program. These environmental seals, which were called diaphragms, kept water out of the sub until a missile was released.
G. T. Schjeldahl Company products and technology using vacuum deposition and lamination were used on the Pegasus satellite, putting the Company into the vacuum deposition business. Thermal control coatings for spacecraft, x-ray sensors, radar-absorbing films, Novaclad, and keypads for computer keyboards all were the result of vacuum deposition.
Balloons (Stratoscope II, ROBIN, Stargazer, and Voyager) continued to be an important part of the Company during the early 1960s. The most significant year was 1964. It was then that NASA launched Echo II. Arthur Hatch became President of the Company in 1964, but Shelly remained Chairman of the Board and Treasurer. The Company's Mechanical Division expanded into the European market. The Company also acquired a paper company in Rhode Island, and moved its packaging machinery operations there, making Jim Womack the head. It also acquired several electronic connector manufacturers.
By 1965, the G. T. Schjeldahl Company had three divisions, Advance Programs, (government research and marketing); Packaging Machinery (bag making); and, Electrical Products. From 1966 through 1971, the Company's Packaging Machinery Division expanded into shrink- wrapping and blow molding. In addition, the Company was considered a pioneer in flexible circuitry (created by using the Company's laminating technology). The Company supplied flexible circuitry for products such as Polaroid cameras and Ford's 1968 cars.
The weakening economy in 1967 caused government supported research to decrease. G. T. Schjeldahl Company sales decreased and net income decreased 60%. Arthur Hatch resigned as President in 1967, and was replaced by George L. Freeman. Shelly also resigned as Chairman of the Board, and started Giltech, a company which concerned itself primarily with making bottles through the blow molding process. The Giltech Company merged with another plastics company, Rainville, in 1972, and became Rainville, Inc. Eventually Rainville, Inc. merged with, and became, Universal Dynamics (UnaDyn), a company headquartered in Woodbridge, VA. In 1970, Shelly also created the Plastic Netting Machine Company. This company developed and produced devices for feeding and filling rigid plastic containers.
Meanwhile, the G. T. Schjeldahl Company struggled as sales continued to decline, down to 16.1 million from under 20 million in 1967, and continued to decline through 1970. In 1971, George L. Freeman resigned as Company President, and James Womack took over the helm. The Company and its products line then began to grow.
In 1974, the G. T. Schjeldahl Company changed its name to Sheldahl, Inc. (the Company or Sheldahl) because it was easier to spell, and it was hoped people would then pronounce it correctly. The Company achieved world-wide status for its materials technology. It was the nation's largest independent producer of flexible circuitry, and was also one of the largest suppliers of packaging material in the Western Hemisphere. Sheldahl also produced laminates and tapes, aerospace thermal control products, helicopter blade liners, flexible circuits, aerostats, membrane switches, aircraft keyboard instrumentation, and worked on products for solar energy programs.
Sheldahl built the bioshield for the unmanned spacecraft Viking which landed on Mars in 1975, and Sheldahl thermal control materials have been on every space shuttle mission since Columbia in 1981. The Company also supplied materials for the Alaska Pipeline.
In 1977, Sheldahl realized that it had branched out into too many areas and was too diverse. The Company decided to focus exclusively on materials and circuitry, and sold the businesses that did not fall under this umbrella. In the area of flexible circuitry, the Company invented the Flexswitch, which is used in microwaves and washing machines, as well as in office equipment, and supplied flexible circuitry to automobile manufacturers.
In the area of Packaging Machinery, Sheldahl's bag machine output was 5000 by 1980, beginning with only one in 1955. Any plastic bag that is used today was probably manufactured on a Sheldahl machine, or at the very least, a machine using Sheldahl technology. However, this division was sold in 1980 in order to focus on materials and circuitry.
In 1978, Shelly suffered a mild heart attack. During his recovery, he pondered techniques for opening up blocked arteries. This led to another business venture, the Cathedyne Corporation. Shelly worked with his cardiologist on improving coronary angioplasty catheters. The Cathedyne Corporation was sold to Angiomedics, Inc., a subsidiary of Pfizer, Inc., of Minneapolis, in 1983.
In 1987, Sheldahl signed an agreement with Sumitomo Bakelite Company of Tokyo, to manufacture and market flexible circuits and circuitry components. In 1988, James Womack stepped down as President and became Chairman of the Board, and James E. Donaghy became President. New products included Z-link, Novaclad in 1990, Novaflex in 1991, Novalink in 1993, and ViaGrid in 1994.
In 1993, Sheldahl led a consortium to help manufacture cheaper multichip modules (MCMs). Longmont, Colorado, was the site of the Company's pilot plant. The Longmont facility placed Sheldahl squarely into the data communications market. Sheldahl was also still active in aerospace during this time. Both the satellite Magellan (1989) and the Hubble telescope (1990) contained Sheldahl products and insulation materials. In 1989, the Company opened a flexible circuit finishing plant in Aberdeen, SD, and a second one was opened in Britton, SD, in 1993. Thermal control materials continue to be needed in spacecraft and satellites.
Sheldahl products and designs have been, and continue to be, used by all of us in our daily lives. In 2000, Sheldahl merged with International Flex Technologies, headquartered in New York.
Gilmore T. (Shelly) Schjeldahl died on March 10, 2002, in Lenox, Massachusetts.
Subject/Index Terms
Administrative Information
Repository: Elwyn B. Robinson Department of Special Collections
Accruals: Additional material was donated by Bruce Gjovig, UND Center for Innovation, in May 2002 (Acc.2003-2603).
Access Restrictions: Open for inspection under the rules and regulations of the Elwyn B. Robinson Department of Special Collections.
Acquisition Source: Gilmore Schjeldahl, Lenox, Massachusetts (via Bruce Gjovig, UND Center for Innovation)
Acquisition Method: Donation; Acc.2001-2537
Preferred Citation: (Description of Item). Schjeldahl Entrepreneur Records. OGLMC 1433, Box #, Folder #. Elwyn B. Robinson Department of Special Collections, Chester Fritz Library, University of North Dakota, Grand Forks.
Finding Aid Revision History: Finding aid migrated to Archon in February 2015.
Box and Folder Listing
Browse by Series:
[Series 1: Sheldahl, Inc.: General Business Records],
[Series 2: Sheldahl, Inc.: Designs, Patents, and Products],
[Series 3: G.T. Schjeldahl's Other Companies],
[Series 4: G.T. Schjeldahl, Personal],
[Series 5: Photographs],
[Series 6: Films],
[All]
- Series 5: Photographs
- Separated and placed in the Photograph File Cabinets.
- Sub-Series 1: Photographs of G. T. Schjeldahl
- Photograph 1: G. T. Schjeldahl, undated
- Photograph 2: G.T. Schjeldahl, sitting at his desk, undated
- Photograph 3: G. T. Schjeldahl, standing in front of grain elevators, undated
- Photograph 4: G. T. Schjeldahl, talking on the telephone, undated
- Photograph 5: G. T. Schjeldahl and an unidentified man (probably actor), standing in Schjel-mile or Portable Plastic Bubble
- Photograph 6: G. T. Schjeldahl, sitting on a swing, and two unidentified individuals; demonstration of Portable Plastic Bubble, circa 1961
- Photograph 7: G. T. Schjeldahl, standing next to parabolic antenna made by G. T. Schjeldahl Company, 1964
- Photograph 8: G. T. Schjeldahl and Jerry Marcell, raising flag on Sheldahl Company, Chrysler Garage, Northfield, MN, undated
- Photograph 9: G. T. Schjeldahl and Jerry Marcell, Raising flag on Sheldahl Company, Chrysler Garage, Northfield, MN, undated
- Photograph 10: G. T. Schjeldahl, sitting at his desk, undated
- Photograph 11: G. T. Schjeldahl, standing in front of blow molding machine, January 22, 1974
- Photograph 12: G. T. Schjeldahl, standing in front of blow molding machine, February 15, 1974
- Photograph 13: G. T. Schjeldahl, standing in front of blow molding machine, February 15, 1974
- Photograph 14: G. T. Schjeldahl, pointing to a design sketch, undated
- Folder 15: G. T. Schjeldahl and an unidentified man, undated
- Folder 16: G. T. Schjeldahl, standing by office door, undated
- Photograph 17: G. T. Schjeldahl, standing in front of drafting board, undated
- Photograph 18: G. T. Schjeldahl, standing next to chartered plane, with an unidentified man checking the plane, undated
- Photograph 19: G. T. Schjeldahl (later years), undated
- Photograph 20: G. T. Schjeldahl (later years), standing in a lab coat, undated
- Photograph 21: Richard J. Slater, undated
- Photograph 22: Marty Grover, artist from Kenneth Square, PA, standing next to bust of G. T. Schjeldahl commemorating 40th Anniversary of Sheldahl, Inc., 1995
- Photograph 1: G. T. Schjeldahl, undated
- Sub-Series 2: Balloons
- Photograph 23: Balloon assembly, Edna Maban, Bill Lee, and Laura Quist, June 1955
- Photograph 24: Balloon assembly, June 17, 1955
- Photograph 25: Balloon assembly, June 17, 1955
- Photograph 26: Balloon assembly, June 17, 1955
- Photograph 27: Balloon assembly, June 17, 1955
- Photograph 28: Load rings, June 17, 1955
- Photograph 29: Load rings, June 17, 1955
- Photograph 30: Load rings and retaining wires, June 17, 1955
- Photograph 31: Register line, June 17, 1955
- Photograph 32: Balloon assembly, June 21, 1955
- Photograph 33: Inflated balloon, June 21, 1955
- Photograph 34: Inflated balloon, June 21, 1955
- Photograph 35: Inflated balloon, June 21, 1955
- Photograph 36: Inflated balloon, June 21, 1955
- Photograph 37: Close-up view of bottom of inflated balloon, June 21, 1955
- Photograph 38: Close-up view of bottom of inflated balloon, June 21, 1955
- Photograph 39: Inflated balloon outside, undated
- Photograph 40: Balloon assembly, circa September 1956
- Photograph 23: Balloon assembly, Edna Maban, Bill Lee, and Laura Quist, June 1955
- Sub-Series 3: Satelloon
- Photograph 41: Four unidentified G.T. Schjeldahl Co. workers, believed to be making a satelloon for Project Echo II, circa 1964
- Photograph 42: Two men (one probably G. T. Schjeldahl), working on satelloon for Project Echo II, April 15, 1964
- Photograph 43: Six unidentified individuals, working on a satelloon for Project Echo II, April 15, 1964
- Photograph 44: Four unidentified individuals, working on a satelloon for Project Echo II, April 15, 1964
- Photograph 45: Four unidentified individuals, working on a satelloon for Project Echo II, April 15, 1964
- Photograph 46: Unidentified man, standing in front of machine, Project Echo II, April 15, 1964
- Photograph 47: Four unidentified men, looking at materials for Project Echo II, April 15, 1964
- Photograph 48: Six unidentified men (probably NASA and G. T. Sheldahl employees), Project Echo II, April 15, 1964
- Photograph 49: Inflated satelloon, Project Echo II, April 15, 1964
- Photograph 50: One hundred thirty-five foot super satelloon; taken during inflation tests at Weeksville, NC, undated
- Photograph 51: Two unidentified workers and a surveyor positioning 50 layers of material before cutting, undated
- Photograph 41: Four unidentified G.T. Schjeldahl Co. workers, believed to be making a satelloon for Project Echo II, circa 1964
- Sub-Series 4: Schjeldomes and Schjelmiles
- Photograph 52: Idea sketch for Schjeldome in Northfield, MN, undated
- Photograph 53: G. T. Schjeldahl, standing with seven unidentified individuals in the background and one unidentified caterpillar driver; Schjeldome is also in the background; probably the site preparation for new building in Northfield, MN, undated
- Photograph 54: Schjeldome, with numerous individuals in the background, undated
- Photograph 55: Unidentified man on a ladder climbing to the top of a Schjeldome; G. T. Schjeldahl standing on top of the Schjeldome to demonstrate its toughness; unidentified individuals standing inside of the Schjeldome, undated
- Photograph 56: Probably close-up view of entrance to Schjeldome, undated
- Photograph 57: Unidentified man (probably G. T. Schjeldahl), standing next to the side of a Schjeldome, undated
- Photograph 58: Air dome at Santa Claus town, Dundee, IL, undated
- Photograph 59: Schjeldome, covering a swimming pool, probably at Lutsen Resort in northern Minnesota, circa 1958
- Photograph 60: Schjeldome Bubble Site, with a Volkswagen Beatle inside of it and one unidentified man standing outside the bubble, and two standing inside (one of them is probably G. T. Schjeldahl), undated
- Photograph 61: Probably a Schjelevator, circa 1959
- Photograph 62: Probably a Schjelevator with a car in front of it and an unidentified man walking toward it, undated
- Photograph 63: One Cargill 1000 caboose and one Union Pacific railcar, with elevator in the background, undated
- Photograph 64: Three unidentified men, looking at an elevator; probably the beginning of a Schjelevator, undated
- Photograph 65: Probably close-up view of the outside base of a Schjelevator, undated
- Photograph 66: Probably close-up view of the outside base of a Schjelevator, undated
- Photograph 67: Probably close-up view of the outside base of a Schjelevator, undated
- Photograph 68: Probably close-up view of the outside base of a Schjelevator, undated
- Photograph 69: Probably close-up view of stakes in the ground which help to suspend a Schjelevator, undated
- Photograph 70: Probably close-up of Schjelevator being inflated, undated
- Photograph 71: Two unidentified men, putting stakes in the ground for most likely a Schjelevator, undated
- Photograph 72: Probably partially inflated Schjelevator with unidentified man standing on top of it, undated
- Photograph 52: Idea sketch for Schjeldome in Northfield, MN, undated
- Sub-Series 5: Bags
- Photograph 73: Perforator, undated
- Photograph 74: Perforator, undated
- Photograph 75: Perforator, undated
- Photograph 76: Perforator, undated
- Photograph 77: Perforator, undated
- Photograph 78: Machine which makes garment bags, undated
- Photograph 79: Machine which makes garment bags, undated
- Photograph 80: Machine which makes garment bags, undated
- Photograph 81: Garment bag, undated
- Photograph 82: Machine which makes slope shoulder bags, undated
- Photograph 83: Machine which makes slope shoulder bags, undated
- Photograph 73: Perforator, undated
- Sub-Series 6: Giltech Blow Molding Machines
- Photograph 84: Sketch of Giltech blow molding machine, undated
- Photograph 85: Captioned sketch of Giltech blow molding machine, undated
- Photograph 86: Close-up view of design sketch of blow molding machine, April 2, 1970
- Photograph 87: Design sketch of blow molding machine, April 2, 1970
- Photograph 88: Design sketch of blow molding machine, undated
- Photograph 89: Giltech Twin 100 prototype machine, undated
- Photograph 90: Giltech prototype machine on a flatbed truck being moved to storage at 7940 Chicago Avenue, South Minneapolis, undated
- Photograph 91: Close-up view of Giltech prototype machine on a flatbed truck, undated
- Photograph 92: Probably early blow molding machine, undated
- Photograph 93: Giltech GT-100 blow molding machine, August 15, 1967
- Photograph 94: Close-up view of a blow molding machine, August 15, 1967
- Photograph 95: Close-up view of part of a blow molding machine, August 15, 1967
- Photograph 96: View of controls of Giltech blow molding machine, February 28, 1968
- Photograph 97: Giltech 120 blow molding machine, February 28, 1968
- Photograph 98: Close-up view of Giltech blow molding machine, October 10, 1968
- Photograph 99: Close-up view of Giltech blow molding machine, October 10, 1968
- Photograph 100: Close-up view of Giltech blow molding machine, October 10, 1968
- Photograph 101: Close-up view of Giltech blow molding machine, 1969
- Photograph 102: One end of GT/120 blow molding machine with outer platen removed showing tooling, 1969
- Photograph 103: Close-up view of part of blow molding machine, 1969
- Photograph 104: Bill Atherton, just completing new wiring of the front control panel of GT/120 blow molding machine, May 26, 1969
- Photograph 105: Representative samples of bottles from one of the qualifying test runs of blow molding machine, June 10, 1969
- Photograph 106: Control panel of blow molding machine, September 28, 1969
- Photograph 107: Close-up view of control panel of blow molding machine, September 28, 1969
- Photograph 108: Close-up of gages on blow molding machine, September 28, 1969
- Photograph 109: Blow molding machine and an unidentified man, October 15, 1969
- Photograph 110: Giltech 100 blow molding machine and an unidentified man (probably Richard Slater), January 16, 1970
- Photograph 111: Giltech 100 blow molding machine, January 16, 1970
- Photograph 112: Giltech 100 blow molding machine and two unidentified men (one is probably Richard Slater), January 16, 1970
- Photograph 113: Giltech 100 blow molding machine and two unidentified men (one is probably Richard Slater), January 16, 1970
- Photograph 114: Giltech 100 blow molding machine and two unidentified men (one is probably Richard Slater), January 16, 1970
- Photograph 115: Blow molding machine and an unidentified man, January 16, 1970
- Photograph 116: Blow molding machine and an unidentified man (probably Richard Slater), January 16, 1970
- Photograph 117: Close-up view of part of blow molding machine, January 16, 1970
- Photograph 118: Close-up view of part of blow molding machine and two unidentified men, January 16, 1970
- Photograph 119: Close-up view of blow molding machine, January 16, 1970
- Photograph 120: Blow molding machine and an unidentified man (probably G. T. Schjeldahl), January 30, 1970
- Photograph 121: Giltech 100 and an unidentified man, January 30, 1970
- Photograph 122: Blow molding machine, undated
- Photograph 123: Close-up view of part of blow molding machine, undated
- Photograph 124: Blow molding machine and an unidentified man, August 1970
- Photograph 125: Close-up view of control panel of blow molding machine, August 1970
- Photograph 127: Close-up view of part of blow molding machine, undated
- Photograph 128: Close-up view of part of blow molding machine, undated
- Photograph 129: Close-up view of part of blow molding machine, undated
- Photograph 130: Close-up view of part of blow molding machine, undated
- Photograph 131: Giltech TG 100-4 blow molding machine, undated
- Photograph 132: Close-up view of part of Giltech TG-100-4 blow molding machine, undated
- Photograph 133: Close-up view of part of Giltech TG-100-4 blow molding machine, undated
- Photograph 84: Sketch of Giltech blow molding machine, undated
- Sub-Series 7: Blow Molding Machine Repair/Assembly
- Photograph 134: Blow molding machine repair/assembly, status of the GT/60 production model, October 30, 1968
- Photograph 135: Blow molding machine repair/assembly, status of the GT/60 production model, October 30, 1968
- Photograph 136: Blow molding machine repair/assembly, status of the GT/60 production model and two unidentified men, October 30, 1968
- Photograph 137: Blow molding machine repair/assembly and three unidentified men (one is probably Richard Slater), September 19, 1969
- Photograph 138: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 139: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 140: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 141: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 142: Blow molding machine repair/assembly, April 2, 1970
- Photograph 143: Blow molding machine repair/assembly, April 2, 1970
- Photograph 144: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 145: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 146: Blow molding machine repair/assembly, April 2, 1970
- Photograph 147: Blow molding machine repair/assembly, April 2, 1970
- Photograph 148: Blow molding machine repair/assembly, April 2, 1970
- Photograph 149: Blow molding machine repair/assembly, April 2, 1970
- Photograph 150: Blow molding machine repair/assembly, April 2, 1970
- Photograph 151: Blow molding machine repair/assembly, April 2, 1970
- Photograph 152: Blow molding machine repair/assembly, April 2, 1970
- Photograph 153: Blow molding machine repair/assembly, April 2, 1970
- Photograph 154: Blow molding machine repair/assembly, April 2, 1970
- Photograph 155: Blow molding machine repair/assembly, April 2, 1970
- Photograph 156: Blow molding machine repair/assembly, April 2, 1970
- Photograph 157: Blow molding machine repair/assembly, April 2, 1970
- Photograph 158: Blow molding machine repair/assembly and one unidentified man, April 2, 1970
- Photograph 159: Blow molding machine repair/assembly and one unidentified man, undated
- Photograph 160: Partially assembled GT/60 production model in foreground with GT/120 prototype in background, undated
- Photograph 161: Blow molding machine repair/assembly and two unidentified men, undated
- Photograph 162: Blow molding machine repair/assembly, undated
- Photograph 163: Blow molding machine repair/assembly, undated
- Photograph 164: Blow molding machine repair/assembly, undated
- Photograph 165: Blow molding machine repair/assembly, undated
- Photograph 166: Blow molding machine repair/assembly and two unidentified men, undated
- Photograph 167: Blow molding machine repair/assembly and three unidentified men, undated
- Photograph 168: Blow molding machine being pulled with a forklift and two unidentified men, undated
- Photograph 134: Blow molding machine repair/assembly, status of the GT/60 production model, October 30, 1968
- Sub-Series 8: Blow Molding Machine Parts
- Photograph 169: Probably blow molding machine parts, February 1967
- Photograph 170: Probably blow molding machine part, February 1967
- Photograph 171: Rotating head with five core rods and neck ring collet assembly, 1969
- Photograph 172: Typical bench test (25# pre-load) of a portion of the tooling, May 26, 1969
- Photograph 173: Platens clamp, September 25, 1969
- Photograph 174: Probably blow molding parts, January 16, 1970
- Photograph 175: Probably blow molding part, January 30, 1970
- Photograph 176: Probably blow molding part, January 30, 1970
- Photograph 177: Probably blow molding part, January 30, 1970
- Photograph 178: Probably blow molding parts, January 30, 1970
- Photograph 179: Probably blow molding part, January 30, 1970
- Photograph 180: Probably blow molding parts, January 30, 1970
- Photograph 181: Probably blow molding part, January 30, 1970
- Photograph 182: Tie-rod cross beam, March 8, 1971
- Photograph 183: Reciprocating clamp for Giltech-100, 1979
- Photograph 184: Probably blow molding machine parts, undated
- Photograph 185: Probably blow molding machine parts, undated
- Photograph 186: 1 1/4" diameter camroll bearing, undated
- Photograph 187: Probably blow molding machine parts sitting on a sketch of most likely a blow molding machine, undated
- Photograph 188: Probably blow molding machine parts sitting on a sketch of most likely a blow molding machine, undated
- Photograph 189: Probably blow molding machine parts sitting on a sketch of most likely a blow molding machine, undated
- Photograph 190: Probably blow molding machine parts sitting on a sketch of most likely a blow molding machine, undated
- Photograph 191: Probably blow molding machine parts sitting on a sketch of most likely a blow molding machine, undated
- Photograph 192: Probably blow molding machine parts sitting on a sketch of most likely a blow molding machine, undated
- Photograph 193: Probably blow molding machine parts, undated
- Photograph 194: Probably blow molding machine parts, undated
- Photograph 195: Probably blow molding machine parts, undated
- Photograph 196: Probably blow molding machine parts, undated
- Photograph 197: Probably blow molding machine parts, undated
- Photograph 198: Probably blow molding machine parts, undated
- Photograph 199: Probably blow molding machine parts, undated
- Photograph 200: Probably blow molding machine parts, undated
- Photograph 201: Probably blow molding machine parts, undated
- Photograph 169: Probably blow molding machine parts, February 1967
- Sub-Series 9: Bufferin and Excederin Bottle Designs, Bristol-Myers Products Division
- Sub-Series 10: Flexible Circuitry
- Sub-Series 11: Plastic Netting Machine Company
- Sub-Series 12: Ice Cream Dispenser
- Photograph 212: Probably an ice cream dispenser, Model JPS, Nov. 1978
- Photograph 213: Probably an ice cream dispenser, undated
- Photograph 214: Probably an ice cream dispenser, undated
- Photograph 215: Ice cream dispenser, undated
- Photograph 216: Ice cream dispenser, undated
- Photograph 217: Ice cream dispenser, undated
- Photograph 218: Ice cream dispenser, Model PGM base feeder, January 24, 1980
- Photograph 219: Ice cream dispenser, Model PGM base feeder, January 24, 1980
- Photograph 220: Ice cream dispenser, Model PGM base feeder, January 24, 1980
- Photograph 221: Ice cream dispenser, undated
- Photograph 222: Ice cream dispenser, undated
- Photograph 212: Probably an ice cream dispenser, Model JPS, Nov. 1978
- Sub-Series 13: SAURCS
- Photograph 223: SAURCS machine repair/assembly, Oct. 1993
- Photograph 224: SAURCS machine repair/assembly, Nov. 1993
- Photograph 225: SAURCS machine repair/assembly and two unidentified men, 1994
- Photograph 226: SAURCS machine repair/assembly, 1994
- Photograph 227: SAURCS machine repair/assembly, 1994
- Photograph 228: SAURCS machine repair/assembly, 1994
- Photograph 229: Close-up view of SAURCS roll, 1994
- Photograph 230: Close-up view of SAURCS roll, 1994
- Photograph 231: SAURCS coating machine, 1994
- Photograph 223: SAURCS machine repair/assembly, Oct. 1993
- Sub-Series 14: Miscellaneous
- Photograph 232: Addition to the north wing of the Gilmore T. Schjeldahl Company office building in Northfield MN; one truck, one van, and one unidentified man, circa 1960
- Photograph 233: Rear view of completion of north wing addition to Gilmore T. Schjeldahl Company office building, circa 1960
- Photograph 234: Gilmore T. Schjeldahl telephone switching gear, 1963
- Photograph 235: Typical Mega-bar 180 degree wrap part from MEGA System Design LTD, Scarborough, Ontario, undated
- Photograph 236: Unknown photo, undated
- Photograph 232: Addition to the north wing of the Gilmore T. Schjeldahl Company office building in Northfield MN; one truck, one van, and one unidentified man, circa 1960
- Sub-Series 1: Photographs of G. T. Schjeldahl
Browse by Series:
[Series 1: Sheldahl, Inc.: General Business Records],
[Series 2: Sheldahl, Inc.: Designs, Patents, and Products],
[Series 3: G.T. Schjeldahl's Other Companies],
[Series 4: G.T. Schjeldahl, Personal],
[Series 5: Photographs],
[Series 6: Films],
[All]