Nova Patents
US548778A

Untitled record

Abstract

This record has no abstract on file.

US548778A, drawing sheet 1
Sheet 1 of 4

3 claims: 3 independent, 0 dependent

  1. 1
    25 What I claim, then, is— 1. An invalid bedstead having vertically moving friction rollers at each end, and the stationary rollers journaled above the friction rollers, combined with a webbing passed un der the movable rollers and over the station- 30 ary rollers, and means for winding up or tightening the web, substantially as described.
  2. 2
    An invalid bedstead having elevated rollers, a webbing passing over the same with means for tightening it to raise the central 35 portion, combined with an operating table arranged to be inserted beneath the webbing and having legs provided with clamps for securing them upon the rails of the bedstead, substantially as described. 40
  3. 3
    An invalid bedstead comprising the frame, having the hollow head and foot posts, the friction rollers having their ends sliding in vertical slots in the posts, springs in the hollow posts for forcing the friction rollers 45 downwardly, the stationary rollers above the friction rollers, and the webbing passing under the friction rollers and over the stationary rollers, with means for tightening it, substantially as described. 50 In testimony that I claim the foregoing as my own I affix my name in the presence of two witnesses. ANNA MARIE DOUGLAS. Witnesses:Lewis Wm. Goold, Arnold Thompson.