INDEX

A
Acid frosting,[46]
"Action" drawings,[90]
Action of a chronometer escapement,[142]
Acting surface of entrance lip,[127]
Actions of cylinder escapement,[112]
Adhesion of parallel surfaces,[94]
Adjustable pallets,[98]
Adjusting screw for drawing instruments,[21]
Analysis of principles involved in detent,[137]
Analysis of the action of a lever escapement,[86]
Angle-measuring device,[68]
Angular extent of shell of cylinder,[122]
Angular motion, drawing an escapement to show,[91]
----How measured,[69]
----Of escape wheel,[37]
Antagonistic influences,[133]
Arc of degrees,[9]
Atmospheric disturbances,[74]
Attainment of isochronism,[159]
B
Balance, how it controls timekeeping,[73]
----Weight and inertia of,[133]
Balance spring, inventor of,[132]
Banking slot of cylinder,[112]
Bankings, effect of opening too wide,[63]
Bar compasses,[21]
Barometric pressure,[74]
Basis for close measurements,[96]
C
Cement chuck, how to use,[173]
Chronometer detent, importance of light construction,[136]
Chronometer escapement,[131], [155]
----Four principal parts of,[134]
Circular pallets,[27]
Club-tooth escapement,[30], [34]
Club-tooth lever escapement with circular pallets and tangential lockings,[83]
Crown-wheel escapement,[155]
Cylinder, drawing a,[120]
----Outer diameter of,[116]
----Putting in a new,[169]
Cylinder escapement,[155]
----Date of invention, etc.,[111]
----Forms and proportions of several parts of,[111]
----Names of various parts,[112]
Cylinder lips, proper shape of,[124]
D
Dead-beat escapement,[131], [135]
----Only one true,[112]
Depth, between cylinder and escape wheel,[129]
----Effect of changing,[176]
Designing a double roller,[77]
Detached escapement,[155]
Detent, functions of the,[137]
Detent escapement,[131], [155]
----Faults in,[132]
Detent spring dimensions,[138]
Detent springs, width of,[147]
Discharging jewel, setting the,[142]
Discharging roller,[136]
Dividers,[9]
----Making,[10]
Double pendulum,[160]
Double-roller escapement,[75]
Draw defined,[85]
Drawing-board,[11]
Drawing instruments,[9]
Drawings, advantage of large,[29]
Drop and draw,[150]
Duplex escapement,[131], [155]
E
Elasticity of spring,[133]
Engaging friction,[81]
English recoil anchor,[167]
Entrance lip of cylinder escapement,[125]
Escapement angles, measuring,[101]
Escapement error, study of,[64]
Escapement matching tool,[106]
Escapement model,[40]
----Balance,[42]
----Balance staff,[44]
----Bridges,[41], [42]
----Escape wheel,[43]
----Extra balance cock,[45]
----"Frosting",[46]
----Hairspring,[42]
----Jewel for,[43]
----Lower plate,[41]
----Main plate,[41]
----Movement for,[41]
----Pallet staff,[42]
----Pillars,[43]
----Regulator,[46]
----Uses of,[44]
----Wood base for,[41]
Escapements compared,[103]
Escapement of Dutertre,[160]
Escape-wheel action,[30]
Escape-wheel, delineating an,[11]
Escape-wheel teeth vs. cylinder,[169]
Escape-wheel tooth in action, delineating an,[126]
Exit pallet,[26]
Experiments of Galileo,[158]
Experiments with a chronometer,[142]
Extent of angular impulse,[118]
F
"Fall" defined,[106]
Faults in the detent escapement,[132]
Fixed rules, of little value to student,[137]
Flexure of gold spring,[146]
Foot, fitting up the,[151]
Fork, testing the,[71]
Fork action,[30]
----Theory of,[59]
Fork and roller action,[54]
Formulas for delineating cylinder escapement,[115]
Frictions,[24]
Frictional escapement,[131], [132]
Frictional surfaces,[63]
Fusee,[131]
G
Gable escapement,[167]
Gage, a new,[172]
Graham anchor escapement,[155]
Gold spring,[146]
Guard point,[79]
----Material for,[79]
Gummy secretion on impulse and discharging stones,[147]
H
Heights in cylinders, how obtained,[171]
Hole jewels, distance apart,[140]
I
Imaginary faults in cylinders,[129]
Impulse angle,[118]
Impulse arc, extent of,[134]
Impulse jewel set oblique,[147]
Impulse planes, locating outer angle of,[39]
Impulse roller,[136]
Incline of teeth,[122]
Inertia of balance,[133]
Inventions of
----Berthoud,[163]
----Béthune,[165]
----Clement,[166]
----Dr. Hook,[162]
----Harrison,[161]
----Hautefeuille,[161]
----Huygens,[158]
----Leroy,[163]
----Thiout,[165]
J
Jewel pin, determining size,[58]
----Cementing in,[67]
----Settings,[66]
Jewel-pin setters,[67]
L
Lathe cement,[173]
----Removing,[175]
Lever, proper length of,[61]
Lever fork, horn of,[61]
----prongs of,[60]
Lift, real and apparent,[112]
Lifting angle,[114]
Lock, amount of,[28]
----Defined,[85]
Lock and drop testing,[69]
Locking jewel, moving the,[149]
Locking stone, good form of,[144]
Lower plate, circular opening in,[56]
M
Marine chronometer, number of beats to hour,[148]
Mathematics,[95]
Measuring tools,[171]
Metal drawings, advantages of,[140]
Motion, how obtained,[16]
Movement holder,[110]
N
Neutral lockings,[84]
O
Original designing,[148]
P
Pallet action, locating the,[90]
Pallet-and-fork action,[12], [13], [17], [18]
Pallet stones, how to set,[104]
Pallets, adjusting to match the fork,[65]
Paper for drawing,[11]
Parts, relations of the,[32]
Passing hollow,[62]
Perfected lever escapement,[87]
Pivots, turning,[172]
Point of percussion,[139]
Points for drawing instruments,[20]
Polishing materials,[52]
Power leaks,[16]
Power lost in lever escapement,[87]
Practical problems in the lever escapement,[98]
R
Radial extent of outside of cylinder,[125]
Ratchet-tooth escape wheel,[12]
Recoil anchor escapement,[155]
Recoil escapement,[154]
Reduced gable escapement,[167]
Retrograde motion,[36]
Roller action, why [30] degrees,[55]
----Of double roller,[78]
Roller diameter, determining the,[55]
Ruling pen,[9]
S
Safety action,[56]
Scale of inches,[9]
Screws, making extra large,[45]
Screwheads, fancy,[45]
Selecting new cylinder,[170]
Shaping, advantages gained in,[116]
Sheet steel, cutting,[48]
Short fork,[100]
Sound as indicator of correct action,[144]
Spring, elasticity of,[133]
Staking on a balance,[175]
Steel, polishing,[49]
----Tempering,[49]
Study drawings,[124]
Systems of measurements,[114]
T
Tangential lockings,[80], [148]
Test gage for angular movement,[65]
Theoretical action of double roller,[76]
Timekeeping, controlled by balance,[73]
Tool for length measurement,[174]
Tools, measuring,[171]
Triangle,[18]
T-square,[9]
U
Unlocking action,[56]
Unlocking roller,[136]
V
Verge escapement,[131], [155]
W
Weight and inertia of balance,[133]
Working model of cylinder escapement,[123]

THE WATCH ADJUSTER'S MANUAL

A Complete and Practical Guide for Watchmakers in Adjusting Watches and Chronometers for Isochronism, Position, Heat and Cold.

By Charles Edgar Fritts (Excelsior),

Author of "Practical Hints on Watch Repairing," "Practical Treatise on Balance Spring," "Electricity and Magnetism for Watchmakers," etc., etc.

This well-known work is now recognized as the standard authority on the adjustments and kindred subjects, both here and in England. It contains an exhaustive consideration of the various theories proposed, the mechanical principles on which the adjustments are based, and the different methods followed in actual practice, giving all that is publicly known in the trade, with a large amount of entirely new practical matter not to be found elsewhere, obtained from the best manufacturers and workmen, as well as from the author's own studies and experiences.

Sent postpaid to any part of the world on receipt of $2.50 (10s. 5d.)