Letter by H C Russell, 8 May 1889

Letter by H C Russell, 8 May 1889
Letter by H C Russell, 8 May 1889, column 1

Letter by H C Russell, 8 May 1889, column 2
Letter by H C Russell, 8 May 1889, column 2

Observatory

8th May 1889

Mr W Gould

Dear Sir

Re yours of seven May just received. The fault is probably in the screw attached to the clock if there is any stiffness in it, they will stop the clock, and it may be stiff from two causes: either the screw is set too deep into the wheel and so rubs hard in the wheel or it is not free enough end wise, and so puts friction on the clock.

To find out: first lift the cylinder off and feel if the screw is quite loose if it is let the clock go for a time without the cylinder. If it goes alright that will prove that the cylinder is in some way the cause of it and probably because the screw goes too deep into the wheel on the cylinder.
If you take out the wire, that fixes the screw to the minute hand of the clock and then turn the screw with your fingers you will be able to feel if there is friction which should not be there. If there is you can adjust the screw a little and make it turn freely. The whole machine was running here for many weeks and never stopped, and it must therefore have got some new strain which has stopped it.

One other point. If the pencils press too hard on the paper that might stop the clock.

Yours Truly
H C Russell

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