Cyclopedia of architecture, carpentry, and building : a general reference work . Fig. 21. Common Type of Spiral Spring for Doors. Double=Acting Butts. The function of the double-acting buttis to allow the door to swing to both sides of the jamb. It is neces-sarily of the spring-butt type, above mentioned, but is double and is soset as to leave the door shut when at rest. There are no cheap typesof this butt on the market, and the work required makes the bestmechanism necessary. There are no appliances which can be sub- 326 HARDWARE 15. Gravity Blind Hing In selecting double-acting butts, alway
Cyclopedia of architecture, carpentry, and building : a general reference work . Fig. 21. Common Type of Spiral Spring for Doors. Double=Acting Butts. The function of the double-acting buttis to allow the door to swing to both sides of the jamb. It is neces-sarily of the spring-butt type, above mentioned, but is double and is soset as to leave the door shut when at rest. There are no cheap typesof this butt on the market, and the work required makes the bestmechanism necessary. There are no appliances which can be sub- 326 HARDWARE 15. Gravity Blind Hing In selecting double-acting butts, always geta large size capable ofdoing the work easily, asthe jar on a light butt asthe door passes the closedpoint will quickly racka light appliance into auseless condition. Inhouse building, the useof double-acting springsis usually confined tochina-closet doors, andin public buildings toentrance doors. In a stituted as in the case of simplesingle-spring hinges. In order todo the work satisfactorily, a verylarge hinge is required—too largeto be ornamental—so that certaintypes are embedded in the floor,out of sight; these are peculi-arly adapted to heavy doors whenthe floors are of Mosaic so thatthe hinge can be firmly bedded inconcrete.
Size: 1591px × 1570px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, booksubjectarchitecture, booksubjectbuilding
