US1241424A - Support for window-washers. - Google Patents

Description

K. NAMBU.

SUPPORT FOR WINDOW WASHERS.

APPLICATWN FILED OCT. I2. 1916.

1 ,24; 1 ,424 Patented Sept. 25, 1917.

W a 5 P f? TTORIVEYS KIYOHIKO NAMB'U, OF SEATTLE, WASHINGTON.

SUPPORT FOR WINDOW-WASHERS;

To all whom it may concern Be it known that I, KIYOHIKO NAMBU, a subject of the Emperor of Japan, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Supports for Window-Washers, and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in supports for window washers, and particularly to a device detachable and adjustable in dimensions to fit various sizes of window casings, and form a secure support for chair or platform for holding any person while washing or cleaning the outside of windows on high walls of buildings.

With the objects of providing a simple and sure means of protecting window was ers or cleaners from danger and injuries of falling while engaged in their work, and for other objects as more fully shown, the following description and drawings are submitted.

Figure 1, represents a side View in section.

Fig. 2, is a perspective of the device, the seat being omitted.

Fig. 3, represents a front view showing the inner cross bar and a chair platform supported on the outside of the window.

Fig. 4, represents. a back view, with a worker supported.

As is well known, the occupation of window washers and cleaners is very dangerous, for the reason that while engaged with their hands in cleaning the outside of high windows, they are unable to use their hands for holding to any portion of the windows or frames, and frequently lose their balance and fall. My invention supplies a simple, safe, and practicable device for use on various sizes of window casings, which supports a chair or other platform from which the worker can work with little danger of falling.

In describing my invention I use certain numerals, which on the different figures, represent like parts of the device.

The supporting means consists of a cross bar 3 of suitable length to extend across a window on the inner side of its casings 16,16, with bracket arms extending at right angles from near its two ends. Each bracket is substantially U shape with a straight arm land Specification of Letters Patent. Patented Sept-25, 191

Application filed October 12,1916. 'Serial No. 125,258.

a lower arm 2 slightly bent to conform to the common slope of a window base plate 1 1, the portion beyond. the bend being represented by a cross line marked between 2 and 5, and the outer end of the lower section of the arm being turned down to form a brace lug 7 through which is threaded an adjusting screw 10 for binding the device securely in place, and the two arms 1 and 2 are connected at the back end by a continuous part 1- of the same material through which is also threaded another adjusting and binding screw 8. The latter screw point is arranged to impinge against a metal plate 11 carried on its point with a shoulder on the screw rotatable in a socket in plate 11, which is a well known construction for binding screw points; the plate 11 in turn bears against the cross bar 3. A third adjusting screw 9 is threaded through the lower arm with its point protruding downward to rest on the base plate of the window and form an outer support adjustable for the outer portion of the arm.

A connecting brace 6 is attached to the outer ends of the U arms by suitable bolts 12 and 12. Any suitable platform 18 may be bolted at 13, 13, 13, across the ends of the duplicate sets of arms as they protrude outside the window casings, and any suitable guard 17 may be provided for the outer edge of the platform to form a substantially constructed chair for the use of the operator and on which he may either stand or sit, with ease, while washing or cleaning the outsides of the window panes 20, or outer casings 16 It will be readily understood that for large wide windows, the two sets of arms may be adjusted upon the bar 3 at any desired point, while the ends of the bar 3 will yet protrude across the inner sides of the window casings and prevent the supported chair or platform from falling. The side of the bar 3 which bears against the casings may if desired be provided with some soft material to prevent marring the casing.

When the platform is in the desired position the operator tightens the screws 8 and 10 against the lower casing and plate of the window, and adjusts the arms horizontally by the screw 9.

Having described my invention, I claim;

1. A window-bracket comprising a crossbar for engagement with the stiles of a casing, a pair of arms each comprising a frame within which said bar is 'slidably embraced, screws at one end of the frame to adjust the bar against the casing, downwardly extending lugs on the lower side of the frames carrying screws to abut the sill-p1ate, and a seat attached to said frames.

2. A window-bracket comprising a crossbar to bear against the inner stiles of a casing, and frames in which sald bar 1s mounted,

]0 comprising'each an upper and a lower element a perpendicular connection at the inner end thereof, set screws in said connections to adjust the bar, a brace at the outer end of each frame, a downwardly extending lug'on each frame having a set screw to engage the sill-plate and a seat connecting the frames.

In testimony whereof I afiiX my signature.

. KIYOHIKO 'NAMBU.

Qopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. I

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