OutdoorKing Repair Forum Forums Collectors Corner Rotary Walmac Rotray Mower - An Interesting One

The Walmac "Improvements in Grass Cutting Attachments" is just saying they have made a blade with a step so the blade bolt head does not rub on the ground,they say with a flat blade the bolt head will
scorch or otherwise score the cut lawn.Also it has a reinforcement bracket so the blade will
not straighten due to centrifugal force and operating shocks.That was how I read it,I was
more interested in the names and dates than the blade.The blade is on the rotating blade plate on the crankshaft.

After seeing the patent you would say the Walmac lawnmower was made by Walmac Electric.

Now we just need to find what the mac stand for .Drivingly: with driving force or energy.

The last picture in the patent can look confusing because of a sectioned view.