Photo Index - Silver Manufacturing Co. - Silver No.21 post drill

Machinery Photo Index

Manufactured/Badged by:
Silver Manufacturing Co.
Salem, OH

True Manufacturer:
Silver Manufacturing Co., Salem, OH

Machine Specifications
Machine Class:	Metal Working Machinery
Machine Type:	Drill Press
Machine Size:	Drills to centre of 12" circle
Submitted By:	John Vannisselroy

Machine Specifications
Description/Model:	Silver No.21 post drill
Date of Manufacturer:	~1911 on.
Serial Number:	n.a.
Last Updated	5/9/2015 8:11:45 PM

Comments:

The Silver Mfg Co. – No.21 Post Drill

Appears to be in very good condition apart from the coupler (between feed screw and spindle). The original pillar, foot, fork and table have been replaced by fabricated steel items. Also missing is the wooden feed-wheel handle.

I bought this post drill in April (2015), and took delivery yesterday (9th May 2015). I don’t need another one, but I have a soft spot for Silver post drills.

Drills to the centre of a 12” circle. 2-speeds – 2nd speed requires cranking in reverse. Run of feed = 3"; dia. of spindle = 1"; feedwheel is 6" dia. and has 67 notches; dia. of flywheel = 10½"; flywheel shaft gear has 22 teeth; main crank gear has 46 teeth; spindle gear has 30 teeth.

I don’t expect to do anything to this post drill for some months (years?). I want to strip it down and compare the components with my No.1 (a No.21 clone) – so it was bought strictly for research purposes you understand (try that on your missus…). But I have too many drills in parts at present and need to get some of the others reassembled first.

Photo 1:

Comments: RH side view. Note the feed-nut has been fitted upside down.
Source: Sellers photograph.

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Photo 2:

Comments: LH side view (feed-nut now fitted correct way up).
Source: Owners photograph.

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Photo 3:

Comments: Detail of the coupler. There's something not right with the coupler - I suspect a repair is required. The actual coupler housing, 2 x ball races, and 8 x 3/16" ball bearings are in storage.
Source: Owners photograph.

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Photo 4:

Comments: That's quite a cute little flywheel. At 10 1/2" diameter it's dwarfed by the almost 18" flywheel off my Silver No.14.
Source: Owners photograph.

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