US1932707A

US1932707A - Window scaffold

Info

Publication number: US1932707A
Application number: US523094A
Authority: US
Inventors: James M Oberti
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-03-16
Filing date: 1931-03-16
Publication date: 1933-10-31
Anticipated expiration: 1950-10-31

Description

WINDOW SCAFFOLD Filed March'l6, 1931 2 Sheets-Sheet 1 INVENTOR. JA MES M. 0551a 77' mm .5 C0. ATTORNEYS.

Patented Oct. 31, 1933 UNITED STATES WINDOW SCAFFOLD James M. Oberti, San Francisco, Calif.

Application March 16,

' 8 Claims.

My invention relates to improvements in window scaiiolds and it consists of the combinations, constructions and arrangements hereinafter described and claimed.

An object of my invention is to provide a window scaffold that can be readily moved from place to place by the window washer and which has novel and adjustable means for adapting the device to various types of window sills. The structure is such that the weight of the window washer on the platform causes gripping members to increase their force in clamping the device in place. 1

A further object of my invention is to provide a device of the type described in which the cover for the water pail can be used as a drip pan for retaining the water draining off the window pane. The pan may be moved into the desired position for catching water draining from either 20 side of the window pane.

Still a further object lies in a floatable member having an area and shape similar to a cross section through the water pail, this member floating on the top of the water for preventing its splashing over the pail, and also being used as a support for the brush so that only the bristles of the brush will be immersed.

Other objects and advantages will appear in the following specification, and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illlustrated in the accompanying drawings forming a partof this application, in which:

Figure 1 is a side elevation of the device;

Figure 2 is a top plan view;

Figure 3 is a side elevation showing the parts in a different position;

Figure 4 is an end view;

Figure 5 is a top plan view showing the device folded; and

Figure 6 is a section along the line 6-6 of Figure 2. V

In carrying out my invention I provide a platform 1 of the shape shown in Figure 2. Hooks 2 are secured to the platform 1 by screws 3 or other suitable fastening means and I have shown additional openings 4 for permitting an adjustment of the hooks when necessary. The hooks are designed to go over the inner edge of a window sill 5 (see Figure 1).

At the opposite end of the platform 1 I mount brackets 6 (see Figures 1 and 2) and these brackets pivotally carry legs 7. The legs have a number of openings 8 therein for receiving a bolt 9 1931. Serial No. 523,094

and in this way the legs are adjustably secured to the platform.

The legs have feet 10 which are pivotally secured at 11 and in Figure l I have shown these legs as resting upon the outer portion of the window sill. The feet 10 carry adjustable gripping members 12 which are in the shape of threaded shanks having rubber knobs at each end. The legs are so adjusted with respect to the feet 10 that they will be inclined in the manner shown in Figure 1 when the platform 1 is in a horizontal position. Any weight placed upon the platform 1 will cause the legs *7 to tend to move the feet 10 toward the hooks 2 and thus provide a firm foundation. 1

In order to prevent the hooks 2 from bending at points adjacent to the platform 1 I provide an adjustable shoe 13 carried by bars 14 (see Figures 1 and 2), these bars in turn being slidably mounted in eyelets 15. The shoe 13 is wedged between the platform 1 and the window sill 5.

In case the window sill is of a different shape than that shown in Figure 1 and is of less width I adjust the parts in the manner shown in Figure 3.

It Will be seen from this figure that the legs 7 have their second openings 8 receiving the bolts 9 and that the feet 10 are pivoted so that the opposite rubber knob on gripping member 12 engages with the outer face 16 of the building. The feet 10 carry angle members 17 which engage with the top of the Window sill 5. It will be noted that the parts in this position cause the legs 7 to extend at an angle and that any weight upon the platform 1 will tend to move the feet 10 toward the hooks 2. As a safety precaution I provide a flexible connecting member such as a rope 18 (see Figure 1) that is connected to an eyelet 19 on one of the feet 10 and its other end is passed through an opening 20 in the platform 1 and has a knot tied for permitting a predetermined movement of the feet 10 away from the hooks 2. The rope 18 prevents the feet 10 from moving entirely off the outer edge of the window sill 5'and this prevents any accident from occurring.

A safety belt indicated generally at 21 (see Figure 3) is designed to be passed around the waist of the Window washer and the other end is passed over a supporting spring 22 and then connected to the platform 1 by means of a securing device 23 of the type shown in Figures 1 and 3. In case the window washer does not use the safety belt the spring 22 will support the rope connected to the belt in a position where it may be readily grasped when desired without the necessity of the window washer reaching below carried from place to place.

the platform 1. If the belt is around the window washer and he should lose his balance, the spring 22 is flexible enough to straighten out and the safety belt 21 would support the window washer and in turn be supported by the fastening device 23. The point of attachment is such that the weight of the window washer supported by the safety belt will not pull the platform loose from the window sill. It will be noted from Figure 3 that the safety belt 21 has a sleeve 37 slidable thereon, this sleeve carrying an eyelet 38. The end of the rope has a hook 39 that may be snapped onto the eyelet 38. This arrangement provides a safety belt which is adjustable to the waist of the wearer.

Figure 4 shows a hinge 24.- that is secured to the platform 1 and carries a handle 25 and an angle shaped support 26. A water bucket 27 has a guide 28 slidable over the handle 25 and the water bucket is supported by the angle member 26. A handle 29 is provided for the water bucket and is used when the bucket is removed from the device for filling it with or emptying it of water.

Figure 1 shows that within the water bucket 27 I mount a floatable member 30 having an area and shape similar to the cross section of the water bucket. This member normally floats upon the surface of the water and prevents it from splashing. The member is also buoyant enough to support a brush shown at 31 in Figure 1 so that only the bristles will be immersed in the water.

A cover 32 for the water bucket 27 is shown in Figures 2 and 6. This cover has a flange 33 that is designed to enter the water bucket and which acts as a retaining wall for a drip pan when the cover is inverted. The cover 32 has a recess 33 with a strip 34 extending across the recess. When the device is in use the cover is inverted and placed upon the hooks 2 so that a tongue 35 carried by the platform 1 will pass beneath the strip 34. In Figure 1 I have shown the inverted cover 32 as being disposed beneath a window sash 36 for catching drippings from the sash. The cover is adjustable on the tongue 35 so as to be readily positioned beneath the window sash.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

The parts are adjusted for the particular shape and size of the window sill, and since generally all the window sills in a building are the same, only one adjustment need be made. I have already explained how the parts are positioned when supporting the platform 1. The window washer in carrying the device from one window to another can fold the parts into the position shown in Figure 5. The entire device including the water bucket can be carried by the handle 25. It should be noted that the handle 25 and the water bucket are swung into a plane paralleling the surface of the platform 1 when the device is The hinge 24 permits this movement.

When the device is placed on the window sill the cover 32 can be positioned on the tongue 35 and the device is ready for use.

Although I have shown and described one embodiment of my invention it is to be understood that the same is susceptible of various changes and I reserve the right to employ such changes as may come within the scope of the claims hereto annexed.

It should be noted that the hooks 2 are in the shape of an 8 (see Figures 1 and 3) and the lower portions of the hooks contact with the inner surface of the window sill far more effectively than if they were provided with a straight angular bend.

I claim:

1. In a window scaffold, a safety line secured to the underside of the scaffold, and a resilient wire normally holding a portion of the line above the device where it may be readily grasped by the operator.

2. In a window scaffold, a platform, means for clamping the platform to a window sill, a drip pan, and means for adjustably securing the pan to the platform and beneath a window sash.

3. A window scaffold comprising a platform, hooks carried by said platform, wall gripping members carried by said platform, a platform supporting block adjustably disposed beneath the platform and threaded shanks carried by the gripping memb rs and having rubber heads disposed at each end.

4. A window scaffold comprising a platform, hooks carried by said platform, wall gripping members carried by said platform, a platform supporting block adjustably disposed beneath the platform, means for limiting the movement of the gripping members in one direction and threaded shanks carried by the gripping members and hav-- ing rubber heads disposed at each end.

5. A window scafiold comprising a platform,

means carried by the platform for engaging with the interior surface of a wall, legs pivotally secured to the platform, and L-shaped feet pivotally secured to the legs for engaging with a window sill and with the exterior surface of the wall.

6. A window scaffold comprising a platform,

means carried by the platform for engaging with the interior surface of a wall, legs pivotally secured to the platform, L-shaped feet pivotally secured to the legs for engaging with a window sill and with the exterior surface of the wall, and threaded shanks carried by the L-shaped feet and having rubber heads disposed at each end. 7 7. The combination with a window scaffold having a' platform on which the operator stands, and means for clamping the scaffold to a window sill, of a safety rope secured to the platform and having a looped end for encircling the waist, the clamping means being so arranged as to grip the window sill structure more tightly when the safety rope exerts a pull on the platform.

8. The combination with a water bucket carrying frame, of a supporting platform hinged to the frame and being swingable from a horizontal position into one paralleling the frame, and wall engaging members pivoted to the platform for securing the platform to a sill, and being swingable into parallel relation with the platform, whereby the platform and members may be swung into a vertical plane adjacent to the bucket carrying frame when moving a water bucket, carried by the frame, from one window to another.

JAMES M. OBERTI.