Abstract: A bird feeder including a removable base, which is configured to be easily removed from the body of the bird feeder by simply pulling the knob downwards to disengage the base from the main body of the enclosure, may be provided. An enclosure may include a top and bottom opening and a side wall. The bottom end of the enclosure may be enclosed by a base member including a pull knob device fixed inside the base member. The base member may be releasably secured to the enclosure by a pull knob mechanism. The base member can be easily removed using pull knob mechanism such that as the pull knob is pulled downwards by a user, locking pins engages a taper slider of the pull knob device and retracts horizontally in the inward direction.

Abstract: The present invention discloses a bird feeder with a removable base wherein the base can be easily removed from the body of the bird feeder by simply pulling the knob downwards that disengages the base from the main body of the enclosure. In the present invention, an enclosure is having a top and bottom opening and a side wall. The bottom end of the enclosure is enclosed by a base member wherein the base member is having a pull knob device fixed inside the base member. The base member is releasably secured to the enclosure by a pull knob mechanism. The base member can be easily removed by using pull knob mechanism wherein as the pull knob is pulled downwards by a user, locking pins engage with a taper slider of the pull knob device and retract horizontally in the inward direction.

Abstract: This invention provides a process for preparing a refractory molded article comprising the steps of (a) forming a molded article matrix from an aggregate and the first binder, (b) impregnating the molded article matrix formed in step (a) with the second binder consisting of an alcoholic solution of one kind or two or more kinds of metal alkoxides selected from alkoxides of metals of Group 4A or Group 4B (excepting carbon) and Group 3A or Group 3B of the periodic table and their partial hydrolysates and an alkaline compound of alkali metal or alkaline earth metal (one kind or a mixture of two or more kinds selected from alkoxides, hydroxides and salts of the metal) and (c) drying and firing the molded article matrix at high temperature and also provides a binder for the preparation of such refractory molded article.

Abstract: This invention provides a process for preparing a refractory molded article comprising the steps of (a) forming a molded article matrix from an aggregate and the first binder, (b) impregnating the molded article matrix formed in step (a) with the second binder consisting of an alcoholic solution of one kind or two or more kinds of metal alkoxides selected from alkoxides of metals of Group 4A or Group 4B (excepting carbon) and Group 3A or Group 3B of the periodic table and their partial hydrolysates and an alkaline compound of alkali metal or alkaline earth metal (one kind or a mixture of two or more kinds selected from alkoxides, hydroxides and salts of the metal) and (c) drying and firing the molded article matrix at high temperature and also provides a binder for the preparation of such refractory molded article.