Bolt Heading Machines

from Machinery's Reference Series (1913)

    The bolt and nut industry in America started in a very small way in Marion, Conn., in 1818. In that year Micah Rugg, a country blacksmith made bolts by the forging process. The first machine used for this purpose was a device known as a heading block, which was operated by a foot treadle and a connecting lever. The connecting lever held the blank while it was being driven down into the impression in the heading block by a hammer. The square iron from which the bolt was made was first rounded, so that it could be admitted into the block. At first Rugg only made bolts to order, and charged at the rate or sixteen cents a piece. This Industry developed very slowly until 1839, when Rugg went into partnership with Martin Barnes; together they built the first exclusive bolt and nut factory in the United States in Marion, Conn. The bolt and nut industry was started in England in 1838 by Thomas Oliver, of Dariston, Staffordshire. His machine was built on a somewhat different plan from that of Rugg, but no doubt was a further development of the first machine; Oliver's machine was known as the "English Oliver."

    As is generally the case with a new industry, the methods and machines used were very carefully guarded from the public, and this, characteristic seems to have followed this industry down to the present time. Judging by the scarcity of information available on the subject. Some idea of the methods which were at first employed to retain all information in the factory in which it was originated is well brought out by the following instance: In 1842, when the Industry was beginning to be generally known. It is stated that a Mr. Clark, who at that time owned a bolt and nut factory in New England, and had devised a special machine for use in this manufacture, had his forging machine located in a room separated from the furnaces by a thick wall. A hole was cut through this wall, and the man who operated the machine received the heated bars from the furnace through the small hole in the wall. The only person who ever got a glimpse of the machine was the operator. The forge man was not permitted to enter the room.

Extract from: Nut and Rivet Forging, Machinery's Reference Series, Publ. The Industrial Press (1913), No. 113, Chap. 1, page 3.
Retyped from copy Digitized by Google
(source)

More information:

Machine for Trimming the Heads of Bolts, Micah Rugg, Patent No. 2,766.

Event description for 31 Aug 1842, the date  Rugg's patent was granted.

back