WATER STA'.l REGIST1 RS : 



i ' '" ' 



tempi -ratine \Mthout \.ui. iii- .11 in its regular n. The 



escapement tc.l 1\ a dust co\- *hn h i* tram- 



parent. The escapement may be disengaged from (lit- C|M k 

 1>\ die ur nt the mil i IJ i, the* spring ( 13), and th* milleil 

 head screw (11 



The weight driven clock i* very simple in < HI, extra 



heav\ I.. -.mill ul l\ in. nli\ the md of the *haft iir*t to the escape* 

 lened and having a sapphire l.e.mn^ with what 

 is call* .1 ili,- olive h< This care reduces the retarding 



effWt ..! tli-- tin. kemn- "! the <>il to a minimum, and is taken 

 so that tli.- mesh of the escapement is always in the same relation 

 \Mih the wheel on the escapement shaft. The escapement is 

 fully je\selle,l .ui.l has a compensating balance wheel. Thus 

 the clock \\ill run unit in ml\ m heat and cold. 



\\ hfii .1 I.M k movement i- -iilijerte,! I 1,1, lli'- li.nr -prm- 



racts and becomes stronger. The teel rim and cent* 

 the I,. 1 1.. ^tracts, as does also the brass rim; but as the 



brass rim contracts more than the steel rim, it has the effect of 

 straightening the rim thus increasing the diameter of the 



\sli< < 1. .ui.l carrying the mass of its weight further away from 

 the .m-. \shn h has a retarding effect. 



The clock is rigidly supported by the* back frame (4) and 



th- I'n. nt led kind cornrr r<nl (2i. It has a thrust bra- 

 ami an adjusting screw ( 17i. The driving wh- 'he clock 



ii. mi i I a -halt i I'' i \\hnh i- supported in ball bear- 



ings lv the two standards (20) ami (21 i. On the -haft < 

 i- a liM.-e -prixket \\heel ami a ralrhet \\he.-l i 22 ' lhat ,ln\e- 

 the eliM k tram \\ith a pawl and spring working on the drixin^ 

 gear wheel. The clock weight hangs on one end of a chain 

 (54) that passes over the sprocket wheel ( 2 



The clock will run continuously for a length of lime <ic|>end- 

 ing on the depth ..i the \\.-ll. the weight falling I 1 * inches in 

 24 hours. Registers have frequently operated for six months 

 \\ith >ne uimiing. The h.ek \s-ij;ht may be raised whenever 

 required, \\ithont mo\in<: the cover or in an\ uav interfering 

 \\ith the operation of the register. 



Four reels, mounted on the main standard of the in-tru- 

 ment, carry and receise the paper strip and the carbon lucking. 

 A strip of paper two feet long and 1 . imho \%ule is all that 



