Builder's hardware; a manual for architects, builders and house furnishers . o the door, and is operated by means of a bent,hinged-lever fastened to the door-head. It is asserted that thisspring has its greatest power just as the door is opened, andthat the strain in the rod diminishes as the door is swungaround. The following table gives the average prices of the door-springs described : Chapter VI. Screen I >o< »r-Sprinj Torsion Boor-Sprin> 6 > A 3 W) -3 60 ?d 3 » w 1-1 % $ .15 $ $ $ $ .20 .40 .25 .25 .35 $ 1 Not found in Bost
Builder's hardware; a manual for architects, builders and house furnishers . o the door, and is operated by means of a bent,hinged-lever fastened to the door-head. It is asserted that thisspring has its greatest power just as the door is opened, andthat the strain in the rod diminishes as the door is swungaround. The following table gives the average prices of the door-springs described : Chapter VI. Screen I >o< »r-Sprinj Torsion Boor-Sprin> 6 > A 3 W) -3 60 ?d 3 » w 1-1 % $ .15 $ $ $ $ .20 .40 .25 .25 .35 $ 1 Not found in Boston market. The principle involved in a reverse-acting spring butt, which 80 BUILDERS HARDWARE. chapter VI. has been explained in a previous chapter, can be applied to.
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Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
