Although they may never match a production machine exactly patents are good for setting a timeline and more interestingly establishing the intenet of the design.
Friday, November 1, 2013
Champion 77: Some Patents
Fascinated by the old machines and while trying to date my 77 I came across these patents.
Although they may never match a production machine exactly patents are good for setting a timeline and more interestingly establishing the intenet of the design.
The needle and shuttle mechanism
After working with the machine for a while it is really just the head that is doing everything, the horn is mostly along for the ride.
This one shows the outline of the shoe insito.
Although they may never match a production machine exactly patents are good for setting a timeline and more interestingly establishing the intenet of the design.
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