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Contemporary Skeleton Rolling Ball Clock
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Contemporary Skeleton Rolling Ball Clock
Brass with porcelain dials. fusee movement.
19 x 16 x 16 in.
From the private collection of the Calculagraph Co. East Hanover, New Jersey and the proceeding three generations.
Brass Congreve Rolling Ball Mantle Clock
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Brass Congreve Rolling Ball Mantle Clock. Case has brass plates supported by turned brass posts with pineapple finials on the corners and brass feet which are threaded for balancing the clock and large center finial at the top; silvered 4 in. chapter ring has black incised Roman hour numerals and blued hands. Double barrel & cable spring driven movement is engaged by a brass plate with a 15 row track on which a steel ball rolls down, when the ball reaches the end it triggers a lever which reverses the incline of the plate redirecting the ball back down the track; the track plate is set on a knife point edge at the top of a post centered on the bottom plate. Each row of the track registers one second which changes the incline of the track every 15 seconds or 4 times per minute. Silvered tag on the front pays tribute to the inventor Sir William Congreve, London; stands on a white marble slab with turned brass feet and under a glass dome with brass framework. In good working condition, hands are replaced, center finial is repaired, circa 20th century. 19 in. high x 16 in. wide x 10 in. deep.
An unsual brass rolling ball skeleton clock
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An unusual brass rolling ball skeleton clock. Having a 9.75″ Roman chapter ring with wax-filled engraved numerals and outer minute track, framing a chain-driven single-fusee timepiece movement beneath a tilting zig-zig track, on a cruciform frame supported by two cast clenched fists, 10.25″, (26cm) high, the blue plush-lined pine oval base with glass dome.
Condition
Congreve Rolling Ball Clock
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Congreve Rolling Ball Clock, (ProClocks Replica, made in China). Case has brass plates supported by turned brass posts with finials on the corners and brass feet which are threaded for balancing the clock and center finial at the top; 2 in. porcelain minutes dial, 1.5 in. sub hour and seconds dial indicating 20 seconds which is the amount of time it takes for the ball to travel from one side of the track to the other acting as the clocks pendulum; has a single cable fusee mechanism powering the clock which is in good running condition. Walnut base with inlaid sides and drawer front with cubed glass dome having gilt brass framework and an access door in the front. 18 in. high x 13.25 in. wide x 1.75 in. deep.
French Rolling Ball Clock
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French Rolling Ball Clock
20th century. Gravity driven balls in a skeleton brass movement under glass box, glass dial, key wound spring powers the rolling ball elevator.
17 x 17 x 9 in.
From the private collection of the Calculagraph Co. East Hanover, New Jersey and the proceeding three generations.
Thwaites & Reed Rolling Ball Clock
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Thwaites & Reed Rolling Ball Clock. c.1950’s. Case has a mahogany base with felt top, brass tubular posts and railing with spherical brass finials, a long slanted track on top of the case feeds the 35 silvered spherical steel balls down into a double disk spoked paddle wheel below, the weight of the ball rotates the wheel clockwise which drives the clock movement; when the ball reaches the bottom of the wheel it is dropped down through a brass cylinder and directed into the felt covered reserve area below. 5.75 in. silvered dial has black incised Roman hour numerals, brass disc center, brass signature tag for ÂThwaites & Reed, London, England and has pierced black hands; brass weight driven movement has a platform lever escapement signed ÂChs. Gorge, SA. Switzerland and is in good running condition. Beautiful clock, all original, in good condition and has a cubed plexi glass dome top. Clock is wound by replacing the balls back on top of the track. 11.5 in. high x 8.5 in. wide x 8.5 in. deep.
Re-Issue 1970’s Rolling Ball Clock
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Re-Issue 1970’s Rolling Ball Clock: 3 porcelain chapter ring dials; lots of brass; key has a cutout G; has ball; glass case.
19″ T x 16″ W x 15 5/8″ D
(Case door has a little damage starting at the bottom by the opening.)