US501442A

US501442A - Window-chair

Info

Publication number: US501442A
Authority: US
Publication date: 1893-07-11
Anticipated expiration: 1910-07-11

Description

(No Model.) M. 0. RODGERS.

WINDOW CHAIR.

,442. Patented July 11, 1893.

I W 75 61' 23:09am

PATENT FFICE.

MARY O. RODGERS, OF PHILADELPHIA, PENNSYLVANIA.

WINDOW-CHAIR.

SPECIFICATION forming part of Letters Patent No. 501,442, dated July 11, 1893.

Application filedApril 4, 1893- Serial No. 469,019. (No model.)

To aZZ whom it may concern:

Be it known that I, MARY O. RODGERS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Window-Chairs, of which the following is a specification.

This'invention relates to a safety window chair for use in cleaning the outsides of windows thereby avoiding the many risks incident to sitting or standing on a window sill while washing or polishing the outside of the glass.

The invention consists in the features of construction and novel Combinations of parts in a window chair wherebyit may be securely fastened in position upon a window sill and projecting outside thereof to afford a firm and safe support for the workman, as hereinafter set forth.

In the annexed drawings illustrating the invention -Figure 1 is a view of theimproved window chair secured in position upon a window sill. Fig. 2 is a side elevation of the window chair disconnected from the window sill. Fig. 3 is a plan of the chair. Fig. 4 is aview of the adjustable clamping bar.

The chair bottom 1, is of rectangular form and may be composed of parallel slats having their ends secured to a rear cross piece 2, the length of which is equal to the width of the chair bottom, and a front cross piece or bar 3 the ends of which project beyond the sides of the chair bottom.

The chair is provided with a hinged or forwardly folding back 4 that may be turned down onto the chair seat when the chair is not in use. To each side of this chair back is pivoted one end of a brace arm which may consist of a straight bar provided with a longitudinal slot 6, Fig. 1, having a sliding engagement with a pin or stud 7 on the side of the chair bottom. Or, as shown in Fig. 2, each chair arm may be composed of jointed links 8 and 9 pivoted respectively to the chair back andchair bottom, and in this construction one link in each arm may be provided with a notch 10, to receive a locking projection 11 on the end of the other link, the jointed ends of the links being lapped by each other in such a manner thatwhen the said brace arms or links are extended the locking projection 11 will'drop into the notches 10 and hold the arms firmly extended in such a way as to securely brace the back of the window chair.

Beneath the chair bottom, at the rear of the front cross bar 3 is a movable or adj ustable clamping bar 12 which is preferably somewhat longer than the front crossbar. To the tops of the projecting ends of the clamping bar 12, on each side of the chair bottom, are securely bolted metallic plates 13 each of which is provided with a guide lug 14 that engages the side and upper edge of the chair bottom. These plates 13 are also formed with stationary nuts 15 that are engaged with horizontal screw shafts 16 by means of which the clamping bar 12 may be adjusted or moved forwardand back. The forward end end of each screw shaft 16 is provided with a finger or thumb piece 17 and each of these screw shafts is supported at its forward end in a perforated lug 18 formed on the upper end of a depending rearwardly turned hook 19 secured to the front of the front cross bar 3, on each side of the chair.

The ends of the clamping bar 12 and attached plates 13 are perforated vertically for passage of vertical screw shafts 20 having finger or thumb pieces 21 on their upper ends and bearing disks 22 on their lower ends. These bearing disks 22 and vertical screw shafts 20 are designed to be used for leveling the window chair when necessary. For the purpose of affording room for vertical adj ustment of the bearing disks 22 in leveling the chair the under side of the clamping bar 12 is recessed or cut away, as shown at 23, at or near each end.

When it is desired to arrangethe window chair for use the clamping bar 12 will be moved back, away from the front cross bar 3, the chair back 4: will be raised and braced and the chair passed out through the opened window until the front cross bar 3 rests on the inside window sill with the hooks 19 engaged under the bottom of the window frame. The finger or thumb pieces 17 will now be turned to rotate the horizontal screw shafts 16 in the proper direction to drawthe clamping bar 12 forward into clamping engagement with a vertically projecting portion of the window sill and, if necessary, the finger or thumb pieces 21 on the vertical screws 20 Will be rototed to adjust the bearing plates or disks 22 so as to level the chair properly upon the outer portion of the sill on which the clamping bar 12 and disks 22 will rest when the chair is in use.

The hooks 19 are preferably made of wrought iron and provided with broad bear ing surfaces for secure engagement with the inner side of the Window frame. It will be seen that by means of the horizontal screw shaft 16 on opposite sides of the chair, the adjustable clamping bar or slide 12 can be brought tightly against the window sill, into firm clamping engagement therewith so as to hold the chair firmly, while by the vertical screw shafts 20 and bearing disks 22, the under sides of which are preferably rounded or beveled, the chair can be easily leveled to compensate for inequalities in the window sill. By providing finger or thumb pieces 17 and 21 for rotating the

screw shafts

16 and 20, risk of tearing the clothing is avoided.

It will be observed that a window chair of this construction can be readily secured in position upon any window sill of ordinary construction whether with or without a sub sill and that it will afford a safe means for gaining access to the outside of a window.

WVhat I claim as my invention is 1. In a window chair, the combination with the chair bottom having a front cross bar extended beyond the side of the chair and provided with depending rearwardly turned hooks and having lugs at the upper ends of said hooks, of an adjustable clamping bar lo cated beneath the chair bottom in rear of said front cross bar and having its ends extended on each side of the chair, nuts and guide lugs secured to the projecting portions of the clamping bar, horizontal screw shafts engaged in the nuts of the clamping bar and in the lugs on the front cross bar of the chair bottom, and finger pieces for rotating said screw shafts to actuate the movable clamping bar, substantially as described.

2. In a window chair, the combination with the chair bottom having a front cross bar pro vided with depending rearwardly turned hooks, an adjustable clamping bar located beneath the chair bottom and provided with guide lugs engaged with the side edges ofthe chair bottom, and means for adjusting said clamping bar, of vertical screw shafts engaged in the ends of the clamping bar and having adjustable leveling disks on their lower ends and finger pieces on their upper ends, substantially as described.

3. In a window chair, the combination of a chair bottom having a front cross bar provided with depending rearwardly turned hooks, an adjustable clamping bar located beneath the chair bottom and provided with guide lugs and stationary nuts, horizontal screw shafts mounted on the chair bottom and engaged with said nuts to actuate the clamping bar, vertical screw shafts mounted in the ends of the clamping bar and provided with leveling disks, and a hinged chair back provided with brace arms, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

MARY O. RODGERS.

Witnesses:

()SCAR R. MEYERS, GEO. S. MonmsoN.