US1242913A - Window-cleaning scraper. - Google Patents

Description

C. E. BLAKESLEE 61 W. A'. AHLGRAN.

WINDOW CLEANING SCRAPER APPLICATION r1150 DEC-18.1913.

1,242,131..- Patent-ed 0G1]. 16,1917.

mea e- CLARENCE, E. BLAKESLE or T PAT is FE mains, new JERSEY.

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To all whom itmag concern: I Be it known that we, CLARENCE E. Bnxnnsnnn, a citizen of the United States, and a resident of Cranford, in the county of Union and State ofNew Jersey, and WILLIAM A. AHLGRAN, a citizen of Sweden, and a resident of Scotch Plains, in the county of Union and State of New 'Jersey, have invented a new and Improved Window-Oleaning Scraper, of which the following is a full, clear, and exact description This invention relates to painters tools", and has to deal more particularly with scrapers which-flare intended for use in cleaning paint from window panes, butit is obvious that the tool maybe used by others than painters wherever it is required to remove substances adhering to the surface of a pane of glass. 3 i r The invention has for its general objects to provide an improved scraper which is A comparatively inexpensive to manufacture,

thoroughly reliable and efficient in use and of handy design.

More specifically, the object of the invention is the provision of a scraper in the form of a holderconsisting of a novel shape of jaws or clamping members in which a sharpened flexible blade is clamped-with the sharpened edge projecting out of the jaws, there being a suit-able handle connected with the blade holder and extending at right-angles to the scraping edge. of the-blade" so that the tool is used by pushing the same against the paint or other matter to be removed, while the pressure is brought to bear on the tool in such, a manner as. to press the sharpened edge of the blade approximately flat against the surface of the glass, such position of the cutting edgeof the blade being most effective in entering under the paint or other matter to be removed and scale it off the glass. i

With such objects in view, and others which will appear asthe description proceeds, the invention comprisesvarious novel features of construction and arrangement of parts'such as will be set forth with particularity in the following description and claim appended hereto.

In the accompanying drawing, which illustrates one embodiment of the invention and wherein similar characters of reference i c a PQ RdiI g pa ts in all the views,

, Specification of Letters Patent. Patented-0015,16, 191?,

Application filed December 18, 1913. Serial No. 807,424. i

. Figure 1 is a perspective view ofthe dow cleaning scraper;

Fig. 2 is a side View thereof; Fig. 3 is aside view showingthe tool in the act of scaling off a lump of paint;

Fig. 4 is a detail sectional view showing the manner of securing the holder to the win handle before the holder is completely formed; and

F ig, 5 is aperspective view of the blade removed. 7

Referring the holder for the blade B which has a cutting edge 1 projecting from one edge of the holder, while secured to and projecting-from the opposite edge or back of the holder is a handle C.

'The'holderA comprises a pair of flexible plates or jaws 2- and 3 which are made from a stripof sheet metal doubled centrally to form a clamp. The vupper jaw 2 has its freeedge bent at a slight angle toward the jaw 3 to form a lip 4, while the lip portion'5' of 'the jaw 8 is disposed opposite the jaw 450' as to cooperate therewith and frictionally grip the blade B. In other words, when the blade is inserted the jaws are under tension, since the jawsmust be spread apart against their own resiliency when the blade is applied. Theblade in width, that is to say from' its cutting edge to its back edge, is of-greater dimension than the jaws from the lips thereof to the to the drawing, designates back portion, so that the back edge 6 of the blade will bear against the back or connecting portion 7 of the jaws. It will thus be seen that the blade has a substantial-bearing so as to resist pressure which is brought to bear on the blade when the tool is used for removing the paint or other material from a surface. Theblade is extremely thin, and hence flexible, and the cutting edge 1 is sharpened to a very acute angle in order that it can more readilyenter under a lump or spatter of paint that has hardened on the surface. Thus when the tool is in operation, as shown in Fig. 3, a pressure is brought to bear downwardly on the tool so as to flex the blade and bring the bevel on the under side thereof at the cutting edge practically flat against the surface from which the material is to be removed.

The blade holder A is provided with a handle C of any suitable construction, the

axis of which is substantially at right-angles to the. cutting edge of the scraper. In the present instance the handle is made of a piece of wire 8 doubled on itself in the form of a loop that can be conveniently grasped in the hand, the loop being narrowed at 9 and the extremities of the wire diverging therefrom so as to be connected to the The ends'lO of the wire are secured by rivets-11 to the upper handle A near the ends.

in which the holder is held, whereby a con siderable pressure can be applied to the tool to remove the paint or other material Without becoming tired. The blades 0?]? the tool are so inexpensive that'a new one can-be substituted for a dull one, and hence no attempt ismade to adjust the position of the blade, as would be necessary if the same were to be sharpened from time to time.

It will be understood that the handle 0 is secured to one side or jaw of the blade holder and projects rearwardly in substantially the plane thereof or straight, as

- bends or turns in it.

shown in Figs. 2 and 3, so that. not only can the blade be applied to the glass at avery acute angle thereto, without the handle or its attachment to the blade holder striking 7 the glass or interfering therewith, but also the handle transmit-s the pressure against it to push the device forward with maximum rigidity, so'that the handle can be made of much lighter material than if there. were Furthermore, it will be noted thatthe handle lies upon the outside of one of the jaws and projects therefrom without engagement with the rear edge of the holder or with the opposite jaw, so that the doubled sheet metal portion'is left perfectly free in its tensional holding of the blade, so far as the handle is concerned. Also it will. be noted that the handle i secured to the jaw 2-which bows, between its rear and front edges, away from the blade 5 and other jaw 3, and said bowed jaw being the upper one the handle is attached to the upper jaw so that in use the lower jaw is ,free to bend or, flex asclearly shown in Fig. 8. In this way the most Copies of this patent may be obtained for effective use of the tool obtained and the strain'of pressure does not tend to separate the handle from the jaws as it would if the handle were secured to the under aw;

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while we have described the principle of operation, together with the device which we now consider to be the best embodiment thereof, we desire to have'i t understood that the device shown is merely illustrative, and that such changes may be made when desired as'are within the scope of the appended claim. I

' Having thus described our invention; we claim as new and desire to secure by Letters Patent? 1 e 1 In a device of the character described, the combination of a-blade, holder eompris ing Sheetiof metal doubled to form: jaws of a single thickness. of sheet metal tensioned toward each other and adapted to receive b tween themselves a bladeso that the projects :at its front cdgeflfrom between the front edges of the jaws and seats at its heel; edge against the line ofdoubling of the sheetof metal, one of said j awe-being bowed away from the other so as to belspaced'between its front and rear edges from' the blade, and a handle comprising apiece of wire doubled to form a hand'gripand having its adjacent ends laid fiatwise upon the outer side of said bowed jaw 'oftheholde-r and secured thereto near the ends thereof so as to project awayifrom the holder with the rear edge and opposite jaw of the holder left free and the tension of the jaws-unimpaired to grip the blade. I

In testimony whereofl have signed my name to this Specification in the presence of two subscribing witnesses. I I

oil nuance E. BLAK'ESLEE.

Witnesses to the signature of (l.

Blakeslee:

JAs. E. WARNER; H. CRANE.

five-cents each, by addressing the Commissioner of Patents, 'Washington, D. G.

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