GENERAL INSULATING AND MANUFACTURING COMPANY - Revision history

Randylyon at 01:35, 23 February 2023

2023-02-23T01:35:14Z

← Older revision		Revision as of 01:35, 23 February 2023
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	[[Image:blocks.jpg\|left\|thumb\|250px\|Rock wool blocks.]]GENERAL INSULATING AND MANUFACTURING COMPANY. Located in three of the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week. (1)		[[Image:blocks.jpg\|left\|thumb\|250px\|Rock wool blocks.]]GENERAL INSULATING AND MANUFACTURING COMPANY. Located in three of the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week. (1)

	General Insulating was the world's largest exclusive manufacturer of rock wool products. The ~~grade~~ name for the company's products was "Gimco.		General Insulating was the world's largest exclusive manufacturer of rock wool products. The trade name for the company's products was "Gimco.

	The limestone used ~~would come~~ from quarries in the area of Dubuque. Inside four cupolas at the Dubuque plant alternating layers of rock and coke were laid. The rock was melted in the lower portion of the cupola by heat generated by the coke under forced draft. From a point near the bottom of the cupola the melted rock flowed into a blast of steam which shredded it and the treated the stone with a patented process. A blast of steam blew the shreds of treated rock into a chamber when the "wool" fibers form in passing through the air. Under controlled temperatures they were cooled.		The limestone used came from quarries in the area of Dubuque. Inside four cupolas at the Dubuque plant alternating layers of rock and coke were laid. The rock was melted in the lower portion of the cupola by heat generated by the coke under forced draft. From a point near the bottom of the cupola the melted rock flowed into a blast of steam which shredded it and the treated the stone with a patented process. A blast of steam blew the shreds of treated rock into a chamber when the "wool" fibers form in passing through the air. Under controlled temperatures they were cooled.

	When the fibers were compressed, they formed an insulating product with entrapped air space volume of between 90 and 97%. This air space volume gave the rock wool its insulating properties. Rock wool was free from ~~all~~ shrinkage and expansion under all temperatures and moisture conditions. It was fire resistant.		When the fibers were compressed, they formed an insulating product with entrapped air space volume of between 90% and 97%. This air space volume gave the rock wool its insulating properties. Rock wool was free from shrinkage and expansion under all temperatures and moisture conditions. It was fire resistant.

	The Dubuque plant was expected to produce an average of six carloads of rock wool daily. The firm would be one of the largest producers of tonnage in the city and one of the largest users of Dubuque products.		The Dubuque plant was expected to produce an average of six carloads of rock wool daily. The firm would be one of the largest producers of tonnage in the city and one of the largest users of Dubuque products.
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	1. "New Rock Wood Firm Launches Its Production," ''Telegraph Herald'', June 17, 1937, p. 1		1. "New Rock Wood Firm Launches Its Production," ''Telegraph Herald'', June 17, 1937, p. 1

	2. "Dubuque Gets Rock Wool Factory," Telegraph-Herald, April 4, 1937, p. 1		2. "Dubuque Gets Rock Wool Factory," ''Telegraph-Herald'', April 4, 1937, p. 1


	[[Category: Manufacturing Company]]		[[Category: Manufacturing Company]]

Randylyon at 15:00, 21 September 2021

2021-09-21T15:00:48Z

← Older revision		Revision as of 15:00, 21 September 2021
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	GENERAL INSULATING AND MANUFACTURING COMPANY. Located in three of the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week. (1)		[[Image:blocks.jpg\|left\|thumb\|250px\|Rock wool blocks.]]GENERAL INSULATING AND MANUFACTURING COMPANY. Located in three of the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week. (1)

	General Insulating was the world's largest exclusive manufacturer of rock wool products. The grade name for the company's products was "Gimco.		General Insulating was the world's largest exclusive manufacturer of rock wool products. The grade name for the company's products was "Gimco.
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	Among the products of the local firm would be refrigerator insulation, rock wool sound absorbing panels, insulating blankets for construction, rock wool insulating and finishing cement, pipe insulation, and insulating blocks. (2)		Among the products of the local firm would be refrigerator insulation, rock wool sound absorbing panels, insulating blankets for construction, rock wool insulating and finishing cement, pipe insulation, and insulating blocks. (2)

Randylyon at 14:56, 21 September 2021

2021-09-21T14:56:32Z

← Older revision		Revision as of 14:56, 21 September 2021
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	GENERAL INSULATING AND MANUFACTURING COMPANY. Located in the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week.		GENERAL INSULATING AND MANUFACTURING COMPANY. Located in three of the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week. (1)

			General Insulating was the world's largest exclusive manufacturer of rock wool products. The grade name for the company's products was "Gimco.

			The limestone used would come from quarries in the area of Dubuque. Inside four cupolas at the Dubuque plant alternating layers of rock and coke were laid. The rock was melted in the lower portion of the cupola by heat generated by the coke under forced draft. From a point near the bottom of the cupola the melted rock flowed into a blast of steam which shredded it and the treated the stone with a patented process. A blast of steam blew the shreds of treated rock into a chamber when the "wool" fibers form in passing through the air. Under controlled temperatures they were cooled.

			When the fibers were compressed, they formed an insulating product with entrapped air space volume of between 90 and 97%. This air space volume gave the rock wool its insulating properties. Rock wool was free from all shrinkage and expansion under all temperatures and moisture conditions. It was fire resistant.

			The Dubuque plant was expected to produce an average of six carloads of rock wool daily. The firm would be one of the largest producers of tonnage in the city and one of the largest users of Dubuque products.

			Among the products of the local firm would be refrigerator insulation, rock wool sound absorbing panels, insulating blankets for construction, rock wool insulating and finishing cement, pipe insulation, and insulating blocks. (2)




	The first production was loose rock wool. Limestone was melted and then blasted with steam to shreds which were then treated in a patented process. The steam blast blew the shreds into patented chambers where they were formed into fibers. The fibers were then formed into an insulating form which was moisture resistant, chemically stable, and fire resistant.

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	Source:		Source:

	"New Rock Wood Firm Launches Its Production," ''Telegraph Herald'', June 17, 1937, p. 1		1. "New Rock Wood Firm Launches Its Production," ''Telegraph Herald'', June 17, 1937, p. 1

			2. "Dubuque Gets Rock Wool Factory," Telegraph-Herald, April 4, 1937, p. 1


	[[Category: Manufacturing Company]]		[[Category: Manufacturing Company]]

Randylyon at 03:08, 2 April 2018

2018-04-02T03:08:09Z

← Older revision		Revision as of 03:08, 2 April 2018
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	"New Rock Wood Firm Launches Its Production," Telegraph Herald, June 17, 1937, p. 1		"New Rock Wood Firm Launches Its Production," ''Telegraph Herald'', June 17, 1937, p. 1


	[[Category: Manufacturing Company]]		[[Category: Manufacturing Company]]

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2014-10-18T03:19:18Z

Created page with "GENERAL INSULATING AND MANUFACTURING COMPANY. Located in the former MILWAUKEE RAILROAD SHOPS, General Insulating and Manufacturing Company opened for business on June 17,..."

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GENERAL INSULATING AND MANUFACTURING COMPANY. Located in the former [[MILWAUKEE RAILROAD SHOPS]], General Insulating and Manufacturing Company opened for business on June 17, 1937. On the first day, twenty-five employees went to work, but company officials hoped to have fifty by the first of the next week.

The first production was loose rock wool. Limestone was melted and then blasted with steam to shreds which were then treated in a patented process. The steam blast blew the shreds into patented chambers where they were formed into fibers. The fibers were then formed into an insulating form which was moisture resistant, chemically stable, and fire resistant.

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Source:

"New Rock Wood Firm Launches Its Production," Telegraph Herald, June 17, 1937, p. 1

[[Category: Manufacturing Company]]