US439798A - Support for persons cleaning windows - Google Patents

Description

(No Model.)

0. E. BRITT. SUPPORT FOR PERSONS CLEANING WINDOWS.

No. 439,798. Patented Nov. 4, 1890.

UNITED STATES PATENT OFFICE.

CHARLES E. BRITT, OF CINCINNATI, OHIO.

SUPPORT FOR PERSONS CLEANING WINDOWS.

SPECIFICATION forming part of Letters Patent No. 439,798, dated November 4, 1890.

Application filed February 8, 1890. Serial No. 339,705. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES E. BRITT, a

citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Supports for Persons Cleaning Windows, of which the following is a specification. My invention relates to safety-supports for persons cleaning windows. Its object is to provide a portable and adjustable platform and guard which may be quickly and securely attached to windows of any size and walls of any. thickness.

The invention will be first fully described in connect-ion with the accompanying drawings, and will be particularly referred to and pointed out in the claims.

Referring to the drawings, in which like parts are indicated by similar reference-letters wherever they occur throughout the various views, Figure 1 is aplan view of my device attached for use. Fig. 2 is a central vertical sectional View of the same, taken through 11ne 0c 00 of Fig. 1. Fig. 8 is a detail view in perspective of some of the parts.

A represents the wall of a building, B the window-sill, and C the wood-work of the window-frame. The platform D, upon which the person stands to clean the window from the outside is preferably formed of slats (l, framed together by the curbing-strips d and cleats (Z and is supported by bars E, which extend through the window-opening and are firmly clamped in position.

To. one side of each bar E is secured an angle-bracket E, which maybe made, as shown, to extend far enough to bear upon the wall, or may be shorter to bear upon the outside of the window-frame or haugingstile. The inner ends of the bars E are for strength capped above and below'with metal plates 6, and the plates and bars are perforated to receive the bolts F, which project through the lower wall of the metal box F, and after passin g through the bars E are provided with tailnuts f, by which the boxes F are firmly secured upon the bars E. These boxes F receive a cross-bar G, in the outer ends of which are fitted the screw-threaded boxes g, which receive the clamping-screws H. The inner ends of these screws are fitted with swivel plates h, which may be secured to the crossbar or followerI, which rests upon the bars E. The inside of this bar is faced with a cushion of rubber, felt, or other yielding material to prevent the wood-work of the window-frame from injury, and the bars E are fitted with heavy rubber bands 6 for the same purpose.

Upon the upper side of the platform D are secured two slotted metal plates D, and the bars E are fitted with anchor-bolts J, the heads of which pass through the slots in the metal plates, and are then given a quarterturn to securely anchor the platform upon the supporting-bars E. The outer slat of the platform has secured upon it near each end lug-plates 70, through the eyes of which are turned the ends of the inverted-U-shaped yoke K, which, with the rods I serve as a guard around the platform. These rods K have their outer ends turned around the horizontal part of the yoke K, and their inner ends turned into hooks to enter eyebolts 7a, which are secured in the window-frame.

To place the frame in the position shown the bars E are passed through the windowopening and spread outwardly until their outer sides bear against the frame. The clamping-screws 11 are now tightened up by means of the crank or key h, which is placed upon the angular key-seat of the screws, clamping the bars E firmly in position. The platform D is now placed upon the bars and securely fastened to them by the anchor-bolts J. The yoke K is now turned to the vertical position and the hooked ends of the rods K passed through the eyebolts. In case the device is to be used upon windows provided wit-h inside shutters the bars E may be re versed, so as to bring the bar G and follower I under them. As the anchor-bolts have the same form of cross-heads upon both ends, the platform will be secured in the manner above described. It will thus be seen that the device may be secured to all kinds of windows without material change, and can be readily replaced and removed without marring the finish of the window framing or walls.

It is obvious that only one of the boxes F is necessary to enable the bars E to be adjusted nearer to or farther from each other by usinga bolt to secure the bar G to one of the bars E.

The series of holes in the bars E are for the purpose of arranging the bars E for attachment to walls of varying thicknesses.

While my device is especially adapted for supporting persons cleaning windows, it may also be used to advantage as a painters scaffold or for cleaning the Walls of buildings. In such case two of the devices are placed in different Windows in the same story and a platform extending overboth secured upon them.

I have shown What I believe to be the best form of my invention; but it is obvious that many mere mechanical changes may be made Without departing from the spirit and scope of my invention.

1. The combination, substantially as specified, of the supporting-bars E, the bracket E, secured upon the outside of said bars, the boxes F, and bolts F, to detachably secure the boxes to the bars, and the bar G, fitted to slide in said boxes, the clamping-screws and their boxes in said bar, the follower I, the platform D, the slotted plates secured thereon, and the anchor-bolts in the bars E to securely hold the platform on the said bars.

2. The combination, substantially as specified, of the bars E, the bar G, having clamping-screws H secured thereon, the outside angle-brackets E, secured upon said bars E, the platform D, the anchor-bolts for securing it to said bars, the yoke K, hinged to the outer edge of the platform, the rods K, fitted to slide upon said yoke and having their free ends hooked, and the eyebolts to receive the said hooked ends.

CHARLES E. BRITT.

\Vitness'es:

M. L. MURRAY, GEO. J. MURRAY.

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