[Yoda]

My question concerning hinging is this: Why in his basic golfing machine diagram, does Homer call an obvious vertical hinge pin an angled hinge pin?

Ray Cayse

Short Answer:

The pin you are referring to in Sketch 1-L is the one that attaches the 'Club' (Primary Lever Assembly) to the Horizontal Hinge. Though this pin is, in fact, mounted vertical (perpendicular) to a vertical plane, it is not the Hinge Pin of a Vertical Hinge. In other words, it is not a Vertical Hinge Pin. Instead, it is the Hinge Pin of an Angled Hinge. And in Sketch 1-L, that Angled Hinge Pin is mounted vertical (perpendicular) to a vertical plane.

Got that? Didn't think so. Let's have another go at it.

Long Answer:

In the normal Dual Horizontal Hinge arrangement (10-10-D), two hinges are required: (1) The primary Horizontal Hinge (with its pin mounted vertically to a Horizontal Plane) to permit Horizontal (Closing) Clubface Motion only; and (2) a secondary Angled Hinge (with its pin mounted vertically to a vertical Plane) to permit the Clubshaft to be lowered onto the face of the Inclined Plane.

Sketch 1-L represents the absolute economy of this dual hinge arrangement in that there is no (apparent) Angled Hinge! There is only an Angled Hinge Pin! The function of the Angled Hinge is served by the angled Club. And the pin of that Angled Club/Hinge -- the Angled Club/Hinge Pin -- is mounted 'vertical to a vertical plane,' thus enabling the Club to be lowered (in a vertical plane) onto the face of the Inclined Plane.

So, the Vertical Hinge Pin you refer to is, in fact, an Angled Hinge Pin.

And not a Vertical Hinge Pin.



Have a nice day!