Spring balances.-A spring balance, which registers either in compression or in tension, has a tube 2, Figs. 1 and 2, containing a sprmg 7 sliding in a tube 3 containing a spring 8. The inner ends of the springs are attached to a peg 5 in the inner tube, the other ends being ...
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In a double-hung window, a sash which opens by being raised or lowered and which is balanced with counterweights or pretensioned springs so that little force is required to move the sash.McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Compani...
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boxes for roller blinds and awnings, operating devices for Venetian blinds, roller blinds, shutters and for roller shutters, panels and wall covering materials, counter-balance weights and rollers for slidingsashesand horizontal slidingwindows, parts and accessories (not contained in other classes) for...
fittings of metal forwindows, transport pallets of metal, containers of metal,windowcasement bolts,boxesof metal, letterboxes of metal, springs, locks of metal, locks of metal for vehicles,sashfasteners of metal forwindows, closures of metal for containers, door closers, bolts, door bolts, hinge...
My improved balance comprises an inner or base strip 6 of flat channel form having a Tshaped channel in which one end each of a plurality of coil springs 8 is slipped and retained in spaced relation to one another. A similarly shaped outer strip 7 of flat channel form having a T-shaped...
1. A sash window counterbalance spring mounting arrangement for fitment into a channel section within a window jamb, comprising at least two coiled ribbon springs, a spring support mounting comprising support means for each of said at least two coiled ribbon springs to support and locate said coil...
The spring 13, which normally grips the spindle 12 to maintain it locked in its adjusted position, is released when the spindle is 'turned in a direction to increase the torsion of the sash balance springs, not shown, a decrease in the torsion of which can be effected by inserting e.g....
Sashes balanced by spring rollers.-A spring sash balance comprises a pair of independently operating cable drums mounted for operation in a plane parallel to the side opening of the window, the inner ends of the springs being connected to the hubs of the drums and the outer ends to each ...