US1224709A

US1224709A - Safety-chair for window-cleaners.

Info

Publication number: US1224709A
Application number: US10191116A
Authority: US
Inventors: Leon Cholet
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-06-06
Filing date: 1916-06-06
Publication date: 1917-05-01
Anticipated expiration: 1934-05-01

Description

L. cnom.

SAFETY CHAIR FOR WINDOW CLEANERS.

APPLICATION FILED JUNE 6,19l6.

Patented May 1, 1917.

"WE/wan Lear; akalef UTE L T BFT@.

LEON CHOLET, or NEW YORK, 1v. Y.

To all whom it may concern Be 1t known that I, LEON CHoLE'r, a c1t1- zen of the United States, anda resident of the city of New York, borough of the Bronx, in the county of Bronx and State of New York, have invented a new and Improved Safety-Chair for Window-Cleaners, of which the following is a full, clear, and exact description.

This invention relates to safety appliances for windows or the like and has particular reference to a portable device in the nature of a chair or seat adapted to be applied at or upon window sills in succession for support ing a window washer while washing the outside of the windows.

One of the principal objects of this invention is to provide a device of the nature set forth that is absolutely safe and reliable in practice, and which may be made and exploited at such a moderate cost as to enable it to be used universally.

Another object of the invention is to pro vide a window cleaning chair with improved facilities for securing it in place.

' With the foregoing and other objects in view the invention consists in the arrange ment and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which- Figure 1 is a vertical transverse section of a window and window sill indicating one of my improved chairs in operative position;

Fig. 2 is a perspective view of the chair detached;

Fig. 3 is a vertical terior anchor device; and

Fig. 4 is a front elevation of'the same showing the end of the strap locked thereto.

Referring now more particularly to the drawings, I show my improved window chair comprising a seat 10, a back 11, and a locking device 12.

The seat may be of any suitable substantial construction and is provided along the lower part of its front with a strip of felt 13, or its equivalent, window sill 1 1 without marring the same.

The back 11 includes a bow shaped frame 15 having downwardly projecting straight sectional view of the in- Specification of Letters Patent.

Application filed June 6, 1916. Serial No. 101,911.

to rest directly upon the- Patented May 1, 1917.

parallel portions 16 above the seat and terminating in straight bracing legs 17 below the seat. These legs are directed downwardlyat an oblique angle to the seat, the angle being such that when the seat is horizontal the legs project downwardly and inwardly toward the wall at an angle of approximately thirty degrees, the extreme ends being fittedinto stationary socket pieces 18 secured in the outside of the wall. Between the

portions

16 and 17 of the frame structure are formed short horizontal sections 19 which fit squarely against the bottom of the seat where they are secured by permanent fasteners 20. This frame structure is exceedingly simple in its make-up and possesses maximum rigidity and strength at the braces 17 where strength is demanded. These braces serve to maintain the seat in horizontal or substantially level position free from all portions of the window structure, except where the front portion of the seat is rested upon the window sill. Bracing arms 21 extend from the back frame forwardly to the sides of the seatto stiffen the upper portion of the back.

The locking device 12 comprises a yoke 22 hinged at 23 to downwardly projecting angle pieces 24 secured to the bottom of the front portion of the seat above the felt 13. The hinges 23 are coaxial and provide for free movement of the yoke 22 toward or from the inside of the wall. An anchor strap 25 is adjustably secured to the tongue 26 extending downwardly from the yoke, these parts being connected by bolts 27 or their equivalent. By means of this adjustment the efiective length of the strap 25 may be varied, as may be required in different installations. The lower end of the-anchor strap is provided with a vertical slot 28 and with edge notches 29, the centers of the notches being in a horizontal line coinciding with the center of the slot.

he anchor comprises a bolt 30 having a T-head 31, the shank of the bolt being journaled in an anchor socket having a barrel 32 and a securing flange 33, through which the socket may be secured to the base-board 31 or other rigid support. The flange 33 is preferably circular and is provided with a pair of holes 35 in transverse alinement with the center of the disk and axis of the bolt 30. The ends of the T-head 31 are provided with lugs or prongs 36 adapted to snap through the notches 29 of the strap and into the holes of the anchor socket under the force of a spring 37 extending around the bolt between a shoulder 38 and the disk end of the socket.

The sockets 18 and the anchor member being secured in place at each window, the operator has but to carry the seat from one window to another during the window cleaning operation. After opening the window, the seat is put in place by slipping the lower ends of the braces 17 into the sockets 18, the pad 13 coming squarely down upon the window sill. The strap 25 is then swung down over the T-head 31, and to complete the locking effect the operator grasps the T-head with his lingers and draws it toward him against the force of the spring 37 so that the prongs '36 will clear the strap, and then upon turning the bolt through ninety degrees the prongs will snap into the locked position shown in Fig. 4, making it impossible for the device to be accidentally loosened. The operator then may sit comfortably upon the seat with his back toward the chair back 11 without clanger of falling. The provision of the side notches 29 of the strap, together with the interlocking spurs 36, makes it absolutely impossible for the strap 25 to vibrate as might otherwise be allowed because of the freedom of movement of the slot along the shank of the bolt.

I claim:

1. The herein described safety chair for window cleaners comprising a rigid seat, a back for the seat comprising a bow shaped frame extending upwardly from the seat and terminating in two straight brace members below the seat, the frame having short horizontal sections fitted squarely against the bottom of the seat, means connecting these horizontal sections rigidly to the seat, stationary wall sockets into which the lower ends of said braces project at an acute angle with respect to the wall, and means securing the front portion of the seat upon the window sill.

2. In a safety chair for window cleaners, arigid seat, a back for the seat comprising a rigid one-piece frame extending both above and below the seat, the free end portions of the frame extending below the seat in parallel relation to each other and constituting brace members, the frame having short horizontal sections fitted squarely against the bottom of the seat at the rear edge thereof, means connecting these horizontal sections rigidly to the seat, stationary wall members to receive and hold the free ends of the brace members at an acute angle with respect to the wall, and means securing the front portion of the seat upon the window sill.

LEON CHOLET.

Copies of this patent may be obtained for f ve cents each, by addressing the Commissioner of Patents,

' i i i Washington, D. C.