High Speed Sensitive Drilling Machine : 1909

High Speed Sensitive Drilling Machine : 1909

This topic has 5 replies, 5 voices, and was last updated 12 January 2019 at 16:39 by Neil Wyatt.

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12 January 2019 at 13:12 #390698
Michael Gilligan
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@michaelgilligan61133
I found this on the Smithsonian website: **LINK**

http://www.sil.si.edu/DigitalCollections/trade-literature/scientific-instruments/pdf/sil14-51690.pdf

It's interesting to compare the specification, the engineering, and the price, with what we see today.

MichaelG.
Advert

12 January 2019 at 13:12 #13397
Michael Gilligan
Participant
@michaelgilligan61133
Check the spec. …
12 January 2019 at 14:34 #390710
Clive Brown 1
Participant
@clivebrown1
I make the equivalent cost now to >£3,500. Thank goodness for China!
12 January 2019 at 16:01 #390725
Tim Stevens
Participant
@timstevens64731
And you still need a small boy running round inside a drum to provide the motive power …

Tim
12 January 2019 at 16:20 #390729
SteveW
Participant
@stevew54046
Best thing is the drive is communicated by a sleeve and a feather. Not something I've tried yet…

SteveW
12 January 2019 at 16:39 #390736
Neil Wyatt
Moderator
@neilwyatt
While the little chain appears a good idea at first, it must greatly reduce the utility of the handy little triangle.

Neil
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