Tyzack hand pillar drill

[JOHN LEWIS 9Participant @johnlewis9]

Hi I just purchased a Tyzack hand pillar drill, an old ad states it has 2 gears how do you change gear on it? also what is the thumbscrew on the left side of machine for?

hope someone can assist, thanks in advance, regards John

[JOHN LEWIS 9Participant @johnlewis9]

[Clive FosterParticipant @clivefoster55965]

Is it the enclosed gearbox version or the exposed bevel gear version?

Exposed gear one has a bevel gear on the main drill shaft and two bevels on the handle drive, one large one small. There are two bearing holes for the handle spindle. Put the handle spindle in one hole to engage the large bevel with the gear on the shaft for high speed. Use the other one for low speed. Usually a a wire spting clip passing through a hole in the casting and engaging in a groove in the handle shaft to keep things in place.Not sure if Tyzack actually sold this type under their own name.

Enclosed gearbox type has two square shafts sticking out the side with fit the drive handle. One is high speed, top I think, the other is low speed. usually top one is high speed. Drill shaft is driven by a bevel. Low speed drives bevel direct from the handle, high speed via a step up gear train. There was a thread including pictures some time back.

These drills have an automatic screw feed driven by the inertial drag of the flywheel on top. If the thumb screw is close to the top its probably the drag adjuster which sets feed power. Cant remember whether more drag is for more or less feed.

Both types are same as equivalent "gut buster" large hand drill types. Probably used same components.

Clive.

 

Edited By Clive Foster on 23/03/2017 08:48:56

[Ian S CParticipant @iansc]

From ME 1927

Ian S C

[JOHN LEWIS 9Participant @johnlewis9]

Hi thanks for replies much appreciated, its the enclosed gearing type.i can see the squared coupling on

the right side above the handle so I just swop the handle on to that to increase speed,problem now solved!

I just stumbled upon this site,and what as great place it is,thanks everyone regards john

[BazyleParticipant @bazyle]

In the advert above there is a bench clamp one for 27/6 of which I have an example. It was also advertised in a 1907 ME so a bit of contrast to the few months for which some modern tools are produced.

[JOHN LEWIS 9Participant @johnlewis9]

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