342

CLASSIFIED TABLE OF AW ABBS.

[Class Xn.

balance-springs. On the balance-spring, more than anyother single piece of a watch, its isochronism depends;and these springs preseut a marked difference in some oftheir qualities from those of any other exhibitor (even ofsome who specially directed our attention to the allegedsuperiority of their springs), inasmuch as they bore thetests both of heating and stretching out nearly straightwithout at all altering their permanent form, which wasnot the case with any other springs which we tried.

Besides these, we agreed to make Honourable Men-tion in our Report of the following Swiss exhibitors ofwatches :— Elfroth (No. 78, pp. 1271, 1272), the makerof the small watch in the end of a pencil-case; Bock

(No. 31, p. 1268), Coury oisiEit (No. 34, p. 1268\ Mek-mooz (No. 15, p. 1266), and Messrs. Baron and Uhl-masn (No. 74, p. 1271); also of M. Favre Brandt (No.23, p. 1267), on account of his ingenious instrumentfor tracing out (not cutting) the teeth of watch-wheels inthe epicycloidal form.

And lastly, we have awarded a Prize Medal to M.Benoit, of Sardinia (No. 33, p. 1303), for his watchesand watch movements, and for a machine for rapidly po-lishing the teeth of the scape-wheel of a horizontal orcylinder escapement.

The following is a summary of the awards in thisClass:—

COUNCIL

MEDALS.

Number

1

Nation.

in

Catalogue.

Name of Exhicitor.

, Objects Rewarded.

United Kingdom

55

Dent, E. J. — — —

- Great clock and collection of other articles.

France — —

-

275

Japy Brothers - — -

- Cheap clock and watch movements, made by machinery.

Switzerland —

_

94

Lutz, C. - — - —

- Hair springs.

France - -

736

Wagner, J. (N ephew) —

— Continuous motion remontoire, and collection of turret-i clocks.

PRIZE MEDALS.

Switzerland —

22

Audemars, L. - - - -

Watches and watch movements.

Sardinia — —

_

33

Benoit, A. - - - -

Watches and tooth-polishing machine.

France — —

_

441

Brocot, A. — - - —

Half-dead jewelled escapement.

_

1589

Detouche and Houdin - -

Collection of clocks.

Switzerland —

9

Dubois, F. William - -

Astronomical clock.

United Kingdom

_

57

Frodsham, C. — - - -

Chronometers and watches.

France - -

_

516

Gannery, V. - - - —

Astronomical clock.

_

525

Gourdin, J. - - - -

Small turret-clock.

United Kingdom

_

27

Gowland, J. - - - -

Astronomical clock.

Switzerland -

8

Grandjean, H. — - — —

Pocket chronometers.

_

24

Grosclaude, C. H — — —

Pocket chronometers.

United Kingdom

—

Ilutton, J. - - - -

Chronometers.

_

32

Jackson, \Y. 11.. and S. — —

AY atches, solid key.

Denmark — —

_

17

Jurgcnsen and Sons — —

Chronometer.

Switzerland -

-

25

Lccoultre, A. - - - -

M atches, movements, and pinions.

United Kingdom

-

12

Losoby, E. T. — - - —

Chronometer compensation balance.

—

68

MacDowall, Charles - -

Clock escapement.

Switzerland -

_

96

Mercier. S. — — — —

AY atches.

France — —

601

Montandon Brothers - -

AY atc-h mainsprings.

United Kingdom

_

35

Parkinson and Frodsham -

Chronometers and watches.

Switzerland —

_

99

Patck, Philippe, and Co. -

Chronometers, watches, &c.

France — -

-

1425

Redier, A. - - - —

Cheap watch alarums.

Switzerland -

-

101

Ketor, F. (money prize, 50/.)

Pocket chronometer with new escapement.

France - —

984

Ileydor Brothers, and Colin

Cheap house clocks.

Prussia (1 Zollv.)

-

342

Bichard, Louis — — —

Chronometer.

France - -

1685

Bieussec, N. — — — -

YY'atch with hand printing seconds.

United Kingdom

130

Roberts, R. - — — —

Turret-clock, and watch-plate drilling machine.

. .

123

Koskell. J. - - - -

Collection of models and watches, and small clocks.

_

124

Rotherham and Sons - -

Collection of watches.

France - -

733

Vissiere — — — — —

Chronometers.

HONOURABLE MENTION.

United Kingdom

52a

Aubert and Klaftenberger

AY”atches.

France - —

—

407

Bailly-Comte and Son —

-

Cheap turret-clocks.

Switzerland —

—

74

Baron and Uhlmann -

-

Chronometers and watches.

United Kingdom

_

34

Barraud and Lund —

_

Compensation balance, and watches.

Switzerland —

-

31

Bock, H. - - - -

—

AY'atches.

United Kingdom

-

94

Bolton, T. - _ -

—

Cheap watches.

France — —

-

450

Chavin (Elder Brother)

-

Cheap turret-clocks.

Switzerland —

-

34

C-ourvoisier, F. — —

-

Chronometers and watches.

United Kingdom

_

86

Cousens and YY’hitcside

-

Stop-watch.

Switzerland -

—

78

Elffroth. D. II. - -

—

AY atch in pencil-case.

_

23

_

Watches and tooth-tracing machine.

—

23

Favre, 11. A. - - -

-

Chronometer, with pointing seconds-hand for markingminute portions of time.

France - -

-

292

Laumain, C. - - -

-

Pocket chronometers.

_

1186

Leroy and Son — -

_

Carriage clocks and watches.

Switzerland -

—

15

Mermooz, Brothers -

-

Chronometers and watches.

France - -

-

350

Pierret - - - -

-

Cheap dock alarums.

United Kingdom

-

128

Shepherd, C. - - -

-

Electric clock escapement.

October, 1851 . E. B. DENISON, Keporter.