Additionally, if rubber cords of the proper length are available, they can pass under and around the anchor and base and be hooked together above the base. Now that we have anchors in place, let us describe the novel base anchor Both FIGS. A primary element of the anchor is the stake 38, the lower end of which is affixed in the concrete footer To assist in the anchoring of the stake 38 in the concrete, a pair of offset cross pins 42 are located near the bottom of the stake.
Stake 38 is square in cross-section, but may be any shape which makes the base non-rotational when a female receptacle 44 depending from an anchor plate 46 is placed in mating position over the stake. Anchor plate 46 is preferably of molded plastic and also includes a flange 48 surrounding the receptacle and integral therewith. The plate 46 can be fastened to the underside of the base by means of bolts The typical construction is to have the bolt threaded ends extend beyond the flange 48, with a washer and nut protruding beyond the lower surface of the plate A housing 52 is welded to the stake 38 at the bottom of the housing, and is open-ended at its upper end, which generally coincides horizontally with the upper end of the stake.
A flange 54 surrounds the upper open end of the housing 52 and extends outwardly therefrom toward, but short of reaching the outer edges of the base. The bottom of the housing 52 and the underside of the flange 54 are interconnected by a plurality of struts 54' shown in FIGS.
The flange 54 is shown as being square in the plan view, but can be other shapes as well. In the design illustrated, the square flange 54 and the flange 48 of anchor plate 46 are both offset angularly at forty-five degrees from the square base, so that the corners of flange 54 approach the side edges of the base with but a few inches to spare.
There are four bolts 50 attaching the plate 46 to the base at the plate corners. Enlarged holes 56 are provided in the flange 54 to permit free passage of the ends of bolts 50 and their nuts through the flange 54 so that the adjacent flanges 54 and 48 come into surface contact when the base is seated on the anchor.
The holes 56 also serve as passages to permit sand to be poured into the space 57 between the flange 54 and the top of the concrete 32 after the anchor has been fixed in position. At the outer periphery of the flange 54, there is provided an upstanding shallow vertical restraining surface 58 which constitutes a primary improvement of this invention over the prior art. The vertical depth of surface 58 has been found to be sufficient at about one-half inch. This corresponds to the thickness of the flange 48 of the anchor plate At the upper edge of the restraining surface 58, a downwardly beveled outer edge 60 is provided.
The periphery of the edge 60 is approximately three-quarters of an inch below the uppermost portion of the anchor. Therefore, the bevel provides an inclined ramp so that it would be very difficult to snag any part of the anchor with the dragging equipment, since the lower peripheral edge of the ramp is well below grade, perhaps from an inch to an inch and a half.
Drain holes 62 are provided in the lower end of housing 52 so that any water which may enter the housing can flow through. Referring now to FIG. At that time the cover plates 40 are installed over the stakes in much the same fashion as the bases.
Although it is preferred to have some small clearance between the outer surfaces of the receptacle 44 and the inside of the housing 52 for ease of placing a base thereover, it is advantageous to have the cover plate 40 mate both with the stake and the inside walls of the housing As can be seen at 64 in FIG.
This would be done after first removing dirt from above the plate The dirt depth may be of a dimension "z", nominally between one-fourth to three-fourths of an inch depending on how grading proceeded. The cover plate 40 is preferably molded of polyurethane to give it a resiliency that enables a player to step directly above the plate 40, have his shoe cleats penetrate the dirt but yet not slip, as he could if the plate had a metal surface. The prior art showing of FIG. For a standard base, this lever arm is approximately six and one-half inches.
In contrast, with the teaching of the novel anchor of this invention, the lever arm "L" is reduced to approximately two and one-half inches. This results in reduced torque applied by a sliding player, saving wear and tear on the base connecting parts. This places receipt of the main sliding force at the outer restraining edge or surface 58 of the flange 54, where the anchor plate 46 has substantially more body and support than is present at the receptacle At least one manufacturer is known to provide a metal sleeve within the receptacle to protect it from wear and tear during installation and removal of the base as well as potential breakage due to a person sliding into a base.
The stake and receptacle of this invention now have a principal function of preventing tipping of the base when standing on it near an edge or a corner. The main brunt of the force applied horizontally to the base by sliding are now absorbed by the restraining surfaces on flanges 54 and In FIG.
The female member is a metal plate 66 sandwiched between the anchor plate 40a and the base 18a. Plate 66 has a depending periphery 68 which encompasses and mates with the outer periphery of the flange 54a.
All rights reserved. Login Sign up. Search Expert Search Quick Search. Baseball base and anchor. United States Patent The horizontal surface area of the anchor is relatively large to enable a dirt-covered anchor to be easily located. Important advantages of the design are to avoid anchor obstruction of dragging equipment when the bases are removed, protecting both the equipment and the anchors, and to minimize risk to a player stepping over an anchor which does not have a base covering it.
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