Connector |
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| 申请号 | US3572783D | 申请日 | 1968-09-18 | 公开(公告)号 | US3572783A | 公开(公告)日 | 1971-03-30 |
| 申请人 | NOBLE MFG CO; | 发明人 | SOSALLA HARRY L; | ||||
| 摘要 | A connector for joining elongated members such as harrow crossbars which connector may be selectively adjusted to function as a rigid connector, a hinge connector or a hinge connector permitting limited vertical movement of the harrow crossbars relative to each other. The connector includes a U-shaped member connected to an end of each crossbar with one U-shaped member adapted to telescope in the other. Rectilinearly elongated and circular apertures are formed in the arms of the U-shaped members with similar openings in the arms of each U-shaped member being aligned. When the U-shaped members of adjacent crossbars telescope, similar openings in the arms of each member will be in alignment. Pivot pins may be installed through either the rectilinearly elongated or circular apertures or both to selectively connect the crossbars. | ||||||
| 权利要求 | 1. A connector for releasably and adjustably joining adjacent elongated members in an end-to-end relationship which connector may be selectively adjusted to function as a rigid connector, a hinge connector or a hinge connector permitting limited movement of the elongated members generally at right angles to the length of said elongated members including: a pair of spaced plates formed at the adjacent end of at least one of said elongated members as the arms of a U-shaped element; at least one generally platelike portion formed at the adjacent end of the other elongated member with said generally platelike portions of adjacent elongated members adapted to be positioned in side by side overlapping relationship; a pivotal aperture and a generally rectilinear elongated aperture formed through each of said plates with the apertures of one plate being alignable with similar apertures of the other plates when the plates are positioned in side by side overlapping relationship; each of said rectilinearly elongated apertures having a longitudinal axis extending generally at right angles to the longitudinal axis of the elongated member; and a pair of pivot pins with at least one pivot pin extending through one set of aligned apertures at any one time to releasably hold the plates together, with said one pivot pin and with said one set of aligned apertures cooperating to form a pivotal joint between said adjacent elongated members. 2. The structure of claim 1 further characterized in that a pair of spaced plates are formed at the adjacent end of each elongated member as the arms of a U-shaped element with the generally platelike arms of the U-shaped elements of adjacent elongated members adapted to be positioned in side-by-side overlapping relationship, and the similar apertures of the arms being alignable to receive at least one of the two pivot pins at any one time to releasably hold the elongated members together. 3. The structure of claim 1 further characterized in that in each plate the longitudinal axis of said rectilinearly elongated aperture is aligned with the center of the pivotal aperture. 4. The structure of claim 2 further characterized in that said U-shaped element of one adjacent elongated member telescopes within the U-shaped element of the other adjacent elongated member. 5. The structure of claim 1 further characterized in that one of said pivot pins is positioned to extend through said rectilinearly elongated apertures and the other pivot pin is positioned to extend through said pivotal apertures to rigidly connect the elongated members. 6. The structure of claim 1 further characterized in that only one of said pivot pins is positioned to extend only through the pivotal apertures to pivotally connect the elongated members. 7, The structure of claim 1 further characterized in that only one of said pivot pins is positioned to extend only through said rectilinearly elongated apertures with sufficient clearance to permit the pivot pin to move along the length of the rectilinearly elongated apertures to pivotally connect the elongated members and to allow limited relative movement of the members generally at right angles to the lengths of the elongated members. 8. The structure of claim 2 further characterized in that one of said pivot pins is positioned to extend through the aligned rectilinearly elongated apertures and the other of the pivot pins is positioned to extend through the aligned pivotal apertures of the arms of the U-shaped elements to rigidly connect the elongated members. 9. The structure of claim 2 further characterized in that only one of said pivot pins is positioned to extend only through the aligned pivotal apertures of the arms of the U-shaped elements to pivotally connect the elongated members. 10. The structure of claim 2 further characterized in that only one of said pivot pins is positioned to extend only through the aligned rectilinearly elongated apertures of the arms of the U-shaped members with sufficient clearance to permit the pivot pin to move along the length of the rectilinearly elongated apertures to pivotally connect the elongated members and to allow limited relative movement of the members generally at right angles to the lengths of the elongated members. |
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