US107493A - Improvement in stands tor cleaning windows - Google Patents

Description

EDWARD HannsTER,orl onion-eo, ILLINols.

Letters PatentNo. 107,493, dated September 20, 1870.

IMPROVEMENT IN' STANDS .'EOR CLEANING- WINDOWS.

The Schedule referred'to in these Letters Patent and making part of the same.

To all whom it may concer-n l Be it known that I, .EDWARD HERBsTEB, of Ohicago, inthe county of Cook and State of Illinois, have invented a new and useful Improvement in Stands for Cleaning Windows; and I do hereby declare the fol.- lowing to be a full, clear, and exact description there-1 of, reference being had tothe'acoompanying drawing forming part of this specification, in which- Figure 1 is a longitudinal vertical section, and v 'Figure 2 is a top view.

Similar letters of reference indicate corresponding parts in the several figures of the drawing.

My invention has for-its object to provide for public usc ai safe, convenient, and effective means by which-persons can stand outside of windows for the purpose of cleaning-them; and

Such means consist in the device constructed as I `will now proceed to describe in detail.

In the drawing- A is the platform, upon which the operator stands in cleaning a window, provided upon three sides with a railing or guard,B.' F

This platform, when in use, is placed upon the outside of a window, O, as showin' in the drawing, and is provided with' two parallel arms, D, extending horizontally fromone side to bear upon the window-sill.

'Through the inner ends of thc arms D a rod, E, passes, to which a series of-folding steps, F, are hinged upon the inside of the window. j

To relieve the strain upon the hinge which connect the steps to `the rod E, and to afford a rmsupport for the upper end of the steps, slotted'legs Gr are at.-

tached, by means of set-screws 7i, to opposite -ends of the topvstep, and reaching to Athe floor. By/ this ar.

rangement the steps are not only held firmlyin position, but adapted for adjustment, to permit the applioation of4 the stand to windows which are located at different heights from 'the floor.

I I are two curved arms depending from the arms D ofthe platform, and connected at their lower ends by a rod7 j. They are provided with friction-rollers 7c at their upper ends, as shown, which admit of their ii'eemovement upon the arms D.

L L are two arms hinged tothe outer edge of t-he platform, in such a' manner as to swing freely beneath the same. They are connected together about midway by the cross-bar m, and their free'ends are adapted to engage with racks formed upon the outer or convexsides of the'pendent arms'I.

A rope or chain, n, connects the cross-bar of the arms L with the platform upon the outside of lthe window.

When .the stand. is applied to a window, the steps are placed upon the inside and the platform upon the "outside, as prei/riously mentioned, with the arms D resting upon the window-sill.

The lower ends of the pendent arms I bear against' the outside of the structure containing the window, their upper ends resting against the window-sill, and

the platform is supported from these arms by means o of the arms L.

Tho weight of the platform serves to hold the arms I in position against the window-sill, the latter being clamped firmly between said larms and a strip, O, af

fixed to the back of the upper step, as shown.

Byoperating the lope u, the arms I and L'are disengaged, to lower the platform and remove the stand,

or thcformer clamped more firmly in position, as circumstances may require.

I I. are right-angular dogs, hung upon the rodIl in suoli a manner as to slide freely,`and are adapted to tit lover the arms D upon the window-sill, to prevent the steps from being folded upward upon the rod.

By this arrangemeutthe whole stand is locked upon a window-sill, against the possibility of casual displace.-

,-ment.

By my invention a stand is produced which can be applied to a window with the utmost expedition, and which can also be removed and folded into a small com pass l for transportation.

The steps may, `if desired, be held in place with relation to each othery by means of v one or more remov- D, tbe'pendent rack-arms I and hinged adjustable arms L, substantially as described, vfor the purpose specified.

3. In combination with the folding steps, the adjustable supporting legs G, substantially as described, for the purpose specified. Y

4. The angular dogs I), in combination with the rod E and arms D of the platform, substantially as de'- scribed, for the purpose specified; f v

5. In combination with the arms D and folding 'steps l, theV pendent arms I and strip O, substantially as described, for the purpose specified.

6. The removable angular bars S, in combination with the folding steps, substantially as described, for the purpose specified. y

EDWARD HERBSTER.

Witnesses:

. E. A. ELLswonTH,

N. K'ELLSWORTH.'

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