Metal fusion bonding – Process – Autogenous fusion
Patent
1974-06-06
1976-07-20
Smith, Al Lawrence
Metal fusion bonding
Process
Autogenous fusion
273169, 273173, A63B 5300
Patent
active
039702367
ABSTRACT:
There is disclosed a method for the manufacture of golf clubs of the iron type having the capability of imparting better loft and directional stability to golf balls. This capability results from the manufacture of the golf irons with desirably low centers of gravity and a generally symmetrical weight distribution about the striking face. The method of manufacture comprises casting a head having a hozel, neck and body dependent thereon and providing the body with an open cavity in its face that extends from at least one edge thereof across a substantial portion of the face and to a first depth therein. Faceplate land grooves are formed along opposite edges of the cavity. A sheet metal plate having a thickness approximately equal to the depth of these grooves is formed with exterior dimensions to seat in the opposite land grooves of the cavity and is placed in the land grooves thereby closing the face to the cavity. The sheet metal plate is secured about its periphery to the head to form an interior cavity open along an edge surface, preferably the top edge, extending across a substantial area of the face of the head. Preferably, the plate is fused to the head by an electron fusion step to produce a homogenous head having an internal cavity. The internal cavity of the head is filled with a low density filler such as an epoxy resin and the like and there is positioned along the bottom of the cavity a predetermined amount of high density weights of lead and the like, sufficient to impart the desired swing weight characteristic to the golf iron formed with the head.
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Shamrock Golf Company
Smith Al Lawrence
Watson Robert C.
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