US2904806A - Window cleaner - Google Patents

Description

H. OBERGFELL WINDOW CLEANER sept. 22, 1959 2 Sheets-Sheet 1 Filed oct. 2'5, 195e ,vm/MAW mmf/rfa M, ww; E@

Sept. 22,1959 H. oBr-:RGFELL 2,904,805

WINDOW CLEANER Filed oct. 25, 1956 2 sheets-sheet 2 lllll United States Patent WINDOW CLEANER lHermann -ObergfelL Elmhurst, lll., assignor to Badger Tool & Mfg. Co., Chicago, 'Ill., a corporation .of Illinois f Application October 2,51, 195,6., Serial No. A618,255

6 Claims. (Cl. 15--1-05) .im/.enden relates generell-y te .Sturdy durable .rust- Yrr-edf Scraper and Squeegee constructions Accordingly, an object of this invention is to provide a new and improved sturdy durable device to clean win.- .dou/s, to `clean other .types .of surfaces, to paint screens, .and the like Still another `object `o f this invention is to provide deyices of the type above mentioned which lend 'themselves ,to economical manufacture on a large production basis.

According to the .general features of Ithis invention .there ,is provide a T-shaped device f0.1' cleaning windows and the like including a clamp having superimposed Plates with intermediate segments nested vtogethenand having filmed outwardly depending terminal segments .et loppe- Site ends of the intermediate segments for clamping between the ends .of the terminal segments window ,cleaner elements. The plates are fastened together in .detachable Patented Sept. 22, 1959 f6 ICC The clamp 14 includes superimposed irregularly configurated plates 16 and 17, plate 16 being preferably made from stainless steel and plate 17 along with the T- shaped bracket 15 and stem 13 being preferably made of a copper coated metal such as steel. The handle 11 may be made from any suitable material such as wood.

The plates 16 and 17 are maintained in detachable clamping relation by means of screws 18. The plates each include a transversely arched longitudinal intermediate portion or segment 19 having at the opposite long sides flaring divergently extending terminal flan-ge segments or side wings 20 and 21. The intermediate porf tions 19 have -radiuses provided with a common midpoint, as is evident from Figure 3, to A facilitate nested assembly thereof. The wing 20 on the lower plate 16 has along its edge a plurality of teeth 22 which are turned or bent slightly outwardly out of the plane of the wing 20. These teeth are to facilitate holding a cleaning element when in clamped assembly with the plate 17. The other wing 21011 the plate 16 has a longitudinally extending rib 2 3. The wing v21 on the upper plate 17 is turned slightly inwardly out of the plane of the wing 21 at 21a to facilitate clamping of a cleaning element.

As will be observed in Figure 3, the arched portion 19 of the upper of the plates is slightly narrower than the arched portion 19 of the lower .of the plates so that in the nested centrally aligned relationship of the arched assembly and the clamp is connected @to a handle ,by v

means of a return bent one-.piece reinforced stern. The stem has an enlarged head fixed-ly connected at ,one end -to one of the intermediate segments and with abutting .ends depending from the head .and detaehebly connected at another and opposite vend with the handle.

Another feature of the present invention relates to arching the intermediate Segments so that they may be engaged in nested relation with the stem to provide a reinforced assembly. i

Still another feature of this invention relates to providins a .clamp for .the device having superimposed irresularly congurated plates nested .one Within the other `and clamped together, with the plates each having a central arched portion and divergent side wings.

A fnrther feature of this invention relates to the particular manner in which the cleaner ele ents are clamped between the plates.

Other objects and features of the present invention will more fully become apparent in view of the following detailed description taken in conjunction lwith the accompanying drawings illustrating ,therein several embodiments and in which:

Figure l is a plan view of a scraper device;

Figure 2 is a front elevation ofthe device shown in vFigure 1;

Figure 3 is an enlarged fragmentary cross-sectional view taken substantially on the line IIl--III in Figure 2 looking in the direction indicated by the arrow;

Figure 4 is an end view of a modiied surface preparing vdevice; and

Figure 5 is an exploded view of the device shown in Figure 4.

As shown on the drawings:

The reference numeral 10 indicates generally my T- shaped scraper which includes a handle structure 11. The handle structure 11 includes a handle 11a which is provided with a socket 12 into which an elongated stem 13 is disposed. Connected to the other end of the stem 13 in detachable assembly therewith is a combination clamp and bracket 14 and 15 respectively.

portions, the wing ilanges 20 and 21 on the sides of the wider arched portion of the lower plate are disposed vin spaced opposed paired relation to the wing ilanges 20 and 2 1 of the upper of the plates so as to enable clamp.- ing of the interposed window cleaning members there,- between. It will also be noted that the junctures o f the wing flanges with the respective arched portions of the plates provide rigid reinforcing ribs directed oppositely to and coacting with the arched portions to rigidly reinforce the plates.

Disposed between the wings Ztl-20 is a plastic scraper 24. This type of scraper is highly useful since it does not readily scratch surfaces to which it is applied such as glass and the like due to its self-lubricating char.- acter-isties. Secured between the other wings, namely Wings 2li-21, is a rubber wiper element 25. This wiper 2 5 has a longitudinally extending groove 26 which is adapted to nest with the rib 23 when in clamped assembly. Outer `exposed surface 27 is beveled at an inclined angle while undersurface 28 has a plurality of ribs 29.

To assemble the cleaning elements 24 and 25 with the T-shaped device 10, the elements are each guided be tween the superimposed sets of wings 20 and 21 and the screws 1S are threaded therethrough to draw and clamp the plates together- To provide a reinforced construction between the clamp 14 and the vstem 13 which are interlocked or loosely clinched together at 3i) a new and improved bracket 15 has been evolved. This bracket comprises a one-piece strip having its free arched ends or portions 31 and 3 2 with their edges in confronting relation to form a handle tube which lends itself to being telescoped into the socket 33 defined by the end of the tubular stem .13. The ends and 31 are joined together by a tubular spherical-like head on segment 34 which is adapted to be welded or otherwise secured to the plate 16 and which is in nested assembly with the intermediate arched portion 19 of the plate 16. To further reinforce the junction of the ends 31 and 32 with the segment 34 the junction between the ends and the segment 33 is webbed at 3S.

The reference numeral indicates a modified type of T-shaped surface working device of scraper. The same reference numerals are again applicable Where identical elements appear as in the first form of my invention.

It will be noted that in this form of my invention a,

clamp 14 and the bracket 15 are directly connected to a handle 11 without the requirement of an elongated stern. It Will be appreciated that this type of device lends itself 'to other types of jobs as opposed to the first form of my invention. As an example, the elongated scraper more readily lends itself to cleaning store windows than the shorter scraper 40.

In this instance, the scraper 40 has its handle 11' provided with a socket 12 at one end and a socket 41 at the other end. In assembly with the lower end of the handle is an aluminum one-piece wedge-shaped scraper element 42 for scraping ice and the like from a surface.

In assembly with the clamp 14 is preferably a T-shaped plastic or liquid absorbent sponge-like element 43 in place of the plastic scraper 24.

It will be appreciated that the device 40 lends itself to a wider number of uses since it has a scraper, a wiper, and a foam element to apply water to a window or other similar job such as painting a screen.

It will be further appreciated that the T-shaped ele- -ment 43 is clamped to scraper 40 in generally the same manner as the plastic scraper 24 on the scraper 10. The element 43 differs in that it has a foot 44 at an inner end of the element 43 which is clamped between the plates of the clamp 14.

It will be understood that modifications and variations may be effected Without departing from the spirit and scope of the novel concepts of the present invention.

I claim as my invention:

1. A T-shaped device for cleaning windows and the like comprising a clamp having superimposed plates comprised of segments including intermediate segments nested together and outwardly turned terminal segments at opposite sides of said intermediate segments for clamping between the ends of the terminal segments window cleaner elements, said plates being fastened together in detachable assembly, a handle, and a return bent oneiece reinforced stem having an enlarged tubular head fixedly connected at one end to one of said intermediate segments and with abutting ends depending from said head and detachably connected at another and opposite end with said handle, both of the plates being disposed on top of said enlarged tubular head, the lowermost of the intermediate segments being vertically arched away from said handle and with said enlarged end having an edge surface following the contour of the arch and being nestingly bottomed in assembly against the arched lowermost segment for long wear by reason of the heavy duty construction which is adapted to withstand pressure.

2. In a window cleaning device, a pair of elongated and relatively narrow metal plates each having a longitudinal transversely arched portion and at each long side of the arched portion of each plate a marginal wing flange extending angularly to the respective arched portion and flaring divergently relative to the wing ange on the opposite long side in each instance, the arched portion of one of said plates being slightly wider than the arched portion of the other of said plates, the junctures of said wing anges with the respective arched portions providing rigid reinforcing ribs directed oppositcly to and coacting with said arched portions to rigidly reinforce the plates, the

plates being assembled with said wider arched portion of said one plate nested rmly into the arched portion of the other plate and with the wing flanges on the sides of the wider arched portion disposed in spaced opposed paired relation to the wing flanges of the other of said plates, means securing the arched portions together, respective strip typewindow cleaning members retainingly clamped between the respective pairs of wing flanges, and a handle secured to said one plate and projecting away from the assembled plates.

3. A window cleaning device as defined in claim 2, wherein said means for securing the arched portions together comprise respective securing elements engaging the arched portions of the plates adjacent to the oppositel ends of the plates and operative to draw the arched portions rmly toward one another.

4. A window cleaning device as defined in claim 2, wherein said handle includes a stem having an enlarged head portion engaging the arched portion of said one plate substantially midway between the ends of said one plate and between the reinforcing ribs of said one plate.

5. A window cleaning device according to claim 4 wherein said enlarged head is of generally tubular form and nested within said arched portion of said one plate.

6. A reinforced T-shaped device for cleaning windows and the like including handle structure and a clamp having a connection, the clamp having superimposed irregularly configurated mated plates joined together and with the plates having areas nested with respect to one another, said plates having side wing structure having outer divergiug tip ends extending away from the handle structure and central arched portions bulged in a direction away from the handle structure between the outer tip ends for reinforcing the connection between the handle structure and the clamp placing the arched portion in closer proximity to the tip ends, said central arched portions on said plates having radiuses with a common midpoint and being in nested assembly, the handle structure being fastened to said clamp at the area where said central arched portions are in nested assembly, window cleaning structure retainingly supported by the side wing structure, and a fastener structure connecting said plates together and in clamped assembly with said window cleaning structure.

References Cited in the file of this patent UNITED STATES PATENTS 970,563 Schwalen Sept. 20, 1910 1,786,037 Sturgis e Dec. 23, 1930 1,923,439 Hukill Aug. 22, 1933 2,082,582 Kling June 1, 1937 2,511,346 Kennedy lune 13, 1950 2,741,789 Ray Apr. 17, 1956 2,745,126 Mora Mar. 15, 1956 FOREIGN PATENTS 16,416 Great Britain '1 117,278 Sweden Feb. 17, 1945 344,619 Great Britain Mar. 12, 1931 1,016,754 France Sept. 3, 1952

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