RSSCategory: American Clock Mainsprings

Seth Thomas Giant No. 1

September 10, 2007 | By | 1 Reply More
Seth Thomas Giant No. 1

I just overhauled a Seth Thomas “Giant No. 1”, having an oak case 25-1/4 inches tall (job no. 4433). The movement is marked “8 1/4” but it is the same movement later called No. 89. It has between-the-plates escapement, and the plates measure 5-5/8 inches tall and 3-5/8 inches wide. According to a repair label, […]

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Last updated October 11, 2012

Mainsprings for Seth Thomas No. 89 Movements

September 10, 2007 | By | Reply More
Mainsprings for Seth Thomas No. 89 Movements

So far, the .0155 inch to .0158 inch thick mainspring has been perfect for the time train. For the strike train, it is satisfactory, but the striking speed may be too slow to suit some people. On a ST “Giant No. 1” oak shelf clock I am currently repairing, I am going to try an […]

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Last updated November 28, 2009

New Haven Oak Kitchen Clock

September 9, 2007 | By | Reply More
New Haven Oak Kitchen Clock

I just finished a New Haven oak kitchen clock (my job no. 4333). The movement has 4 pillars and the dimensions are 4-9/16 x 3-1/4. The time mainspring is held by a separate short pillar attached to back plate. This movement has thin springs for time and strike. The two springs are both old but […]

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Last updated November 27, 2009

Ansonia Iron Mantel Clock

August 31, 2007 | By | 2 Replies More
Ansonia Iron Mantel Clock

I just completed the overhaul of an Ansonia iron cased mantel clock (my job no. 4422). It has the common 4 pillar 8 day time and strike movement of dimensions 5 x 3-1/4 inches. In this clock, a previous repairer had replaced the srike mainspring with one that is 3/4 inches wide and .018 inches […]

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Last updated November 27, 2009

Ansonia Walnut and Oak Shelf (Kitchen) Clocks

August 29, 2007 | By | 4 Replies More
Ansonia Walnut and Oak Shelf (Kitchen) Clocks

I just overhauled an Ansonia oak shelf (kitchen) clock (my job no. 4357). It has the 4 pillar 8 day time and strike movement of dimensions 5 x 3-1/4 inches. The original mainsprings in these clocks are 3/4 inch wide and typically about .0155 inch thick. The previous repairer had installed a time mainspring .0185 […]

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Last updated November 27, 2009

New Batch of Merritt’s Clock Mainsprings

August 27, 2007 | By | Reply More
New Batch of Merritt’s Clock Mainsprings

Merritt’s Antiques has the P1496 mainspring in the red, orange and yellow box again! Last week I received 12 of them. I took two springs, measured them to be .0158 inches thick, cleaned and lubricated them, and installed them in a Seth Thomas 89C movement in an Adamantine mantel clock (my job no. 4396). These […]

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Last updated November 27, 2009

Mainsprings for Seth Thomas Adamantine, 89C Movement

August 14, 2007 | By | Reply More
Mainsprings for Seth Thomas Adamantine, 89C Movement

I just overhauled a Seth Thomas 89C movement for an Adamantine mantel clock (my job no.4401). Both the time and strike mainwheels had significant tooth wear. The mainsprings had the ST logo and may be original, and the thicknesses were .071 for the time spring and .073 for the strike spring. To reduce future wear, […]

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Last updated November 28, 2009

Mainsprings for Seth Thomas Queen Anne, Time and Strike, with Second Hand

August 8, 2007 | By | 2 Replies More
Mainsprings for Seth Thomas Queen Anne, Time and Strike, with Second Hand

I just repaired a Seth Thomas “Queen Anne” wall clock with time and strike movement. It is a large movement (about 7 1/2 inches tall), much larger and heavier than the standard American movement. In Tran Duy Ly’s book “Seth Thomas Clocks and Movements”, the movement is listed as #85, and the mainsprings are specified […]

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Last updated November 28, 2009

Merritt’s Mainsprings P1496

June 19, 2007 | By | 1 Reply More
Merritt’s Mainsprings P1496

I received a new batch of P1496 mainsprings (3/4″ x .0165″ X 96″) from Merritt’s antiques. They are made by a different supplier than the ones I wrote about recently. The ones I really like come packaged as follows: Each spring is wrapped in oiled paper, then in a plastic bag, then in a red, […]

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Last updated November 28, 2009

Mainsprings for Seth Thomas Oak Kitchen Clock

June 15, 2007 | By | Reply More
Mainsprings for Seth Thomas Oak Kitchen Clock

I just overhauled a Seth Thomas called “The Giant, No. 2” shown in Tran Duy Ly’s Seth Thomas book as being made ca. 1904. The movement is 8 day time and strike with inside escapement and is labeled 8 1/4 (this movement model was later called no. 89 and was made in several pendulum lengths […]

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Last updated November 28, 2009