Low-visibility lazy-tongs mechanism for conventional traverse rods for even folding and unfolding of drapery
This application is a continuation-in-part of applicant&#39;s co-pending application Ser. No. 790,849, filed 25 Apr. 1977 now U.S. Pat. No. 4,152,809. 
    
    
     BACKGROUND AND OBJECTS OF THE INVENTION 
     Traverse-rods have heretofore been provided with lazy-tongs mechanisms for effecting even folding and unfolding of drapes (e.g. U.S. Pat. Nos. 3,013,603, 3,045,747 and 3,750,738). But none is known to be constructed for snap-together easy size-adjustment, for use with conventional traverse rods and for substantial concealment by being small in size, by the use of large decorative trim rings and/or by being made from colorless transparent or translucent plastic links. It is the principal object of this invention to provide such a lazy-tongs drapery-control device. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a front elevational view of a preferred embodiment of the invention. 
     FIG. 2 is an enlarged fragmentary front elevational view of the showing of FIG. 1 with the lazy tongs fully closed. 
     FIG. 3 is an enlarged end view of FIG. 1 in section on line 3--3 of FIG. 1. 
     FIG. 4 is an enlarged fragmentary rear elevational view of FIG. 1 with the lazy-tongs fully extended. 
     FIG. 5 is a view like FIG. 4 but with the lazy-tongs in intermediate condition. 
     FIG. 6 is a view like FIGS. 4 and 5 but showing the lazy-tongs fully closed. 
     FIG. 7 is a fragmentary front elevational view of a modified embodiment of the invention showing fully extended lazy-tongs. 
     FIG. 8 is a view like FIG. 7 but showing the lazy-tongs fully closed. 
     FIG. 9 is an enlarged fragmentary elevational view in section taken on the line 9--9 of FIG. 8, showing the snap-connector details. 
    
    
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     With reference now to FIGS. 1-6 of the drawings, the numeral 11 designates a conventional-type traverse rod which is C-shaped in transverse cross-section (FIG. 3). The numeral 13 generally designates the lazy-tong assemblage of FIGS. 1-6 assembled with said traverse rod 11. 
     The assemblage 13 comprises a plurality of lazy-tong strips 15 formed of low-visibility non-glare transparent or frosted translucent colorless plastic material and dimensioned so as to be substantially fully concealed behind the traverse rod 11 when strips 15 are in their fully extended condition of FIG. 4. Each strip 15 has two end apertures and a center aperture whereby they can be interconnected to form the lazy-tong mechanism by pivot pins most of which are of a snap-connecting type 17 (like that shown in FIG. 9 and hereinafter fully described) to provide easy assemblage and length adjustability. In FIGS. 4-6 every second center pivot pin is a machine-type screw 19 which connects the lazy-tong strips 15 to the combined drapery hangers and ornamental and tongs-concealing members 21 next described. 
     The members 21 comprise conventional spool-shaped plastic elements 23 (FIG. 3) the hub portion of which is guidingly slidably embraced by the edges of the slot in the rear face of the C-shaped traverse rod 11. The drapery-hanger part of the member 21 is a metal strap 25 apertured at its upper end to engage over the screw 23 and apertured at its lower end (which is offset-bent to lie directly beneath the traverse rod 11) to receive the hook part 27 of a conventional pin 29 for supporting a drape 31 or the like. A large wide plastic band 33 (herein shown as molded in G-shaped side-view) serves to substantially fully conceal the lazy-tongs in their FIG. 6 condition. It also can be colored or otherwise treated to enhance its ornamental feature. All of the elements 23, 25 and 33 are joined together and to every-other pair of tong strips 15 by the screw 23 and by its co-operating nut 35. A low-friction spacing washer 37 completes the member 21. 
     In the species of FIGS. 7-9, primed numerals designate parts corresponding to parts indicated by unprimed numerals in FIGS. 1-6. The drape hangers 25&#39; are of molded plastic and their offset portions 39 are forwardly extended so that drapery hooks (like 27-29 in FIG. 3) will locate a drape 31&#39; close to and directly beneath the traverse rod 11&#39; so as to conceal the fully closed lazy-tong elements 15&#39; (FIG. 8). It should be noted that the folded drapes would extend forwardly so that their top portions would furthermore act to conceal the folded lazy-tongs. The hangers 25&#39; are connected to every-second pair of tong elements 15&#39; by screws 23&#39; which screws also connect to elements 15&#39; some spool-shaped traverse-rod-engaging elements (not shown) like element 23 in FIG. 3. 
     In both species, an end pair of the tong elements is anchored to the traverse rod in any convenient manner and conventional pull cords can be placed in the rod (e.g. as shown in the parent application). Also conventional sliding hanger-fixtures like part 41 (FIG. 1) are attached to the free end of the tongs of both species. 
     FIG. 9 shows details of the snap-connecting pivot pin 17 used with both embodiments of the invention. A plastic shaft 43 has an enlarged head 45 and a tapered enlarged tip 47 which is split at 49 to permit radial contraction for and during its insertion through aligned apertures in paired tong elements 15&#39;.