US2133087A - Scraper - Google Patents

Description

' Oct. 11, 1938. E. w. ERICSSON- 2,133,087

SCRAPER Filed March 9, 1957 llIIllflllllillllllllllllll? .9 lNVENTOR 5PM Emassom ATTORNEY Y the invention consists in .a "device of "the class andi'for the purpose specified,. which is simple in 7 construction, efiicient in use,'and which is con- Patented Oct ll, 1938 UNITED This invention. relates tofsc'raper devices designed for use in removing paint, dirt and other matterfrom windows, or in the conventional use of scrapers generally in the removal'of fin ishes on painted or stained surfaces; and .the

object of the invention is to provide'a device of the class described which is of simple and economical construction, and further one which by virtue of the construction of the head orl blade supporting end of the tool will'permitunii versal mounting of a razor blade inconnection therewith'to permit other distinct uses for the tool, such'for example as a. knife, paper or cord cutter, seam ripping instrument and the like;

- a furtherjobject being to provide atool of the class described, the. blade supporting end of which is provided with converging outer side walls so formedas to provide bearings forithe tubular studs or sleevesofafsupplementalgblade supporting plate to rigidly support'sadd' plate;

as well as a double edged razor blade inl'conne c tion with the handle of the tool, and further, in

providing a plurality'of apertures in theha'ndl'e to receive said studs'in the different angular positions of adjustment of the blade and'support;

ing plate with respect thereto; a still; further ob ject being to provide means for, permanently coupling a clamp screwf in'connectionwith said.

clamp plate tofpreventrelative detachment of the screw and plate: while at the same time per; T mitting rotary movement "of the screw in: said plate;{and. with these a'nd otherj objects in view,-

structed as}hereinafter described and claimed.

Theinvention is fully disclosed in the following specificationQof which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitin each of the ,views,

able reference characters and in which: l I

Fig. 1 is a plan view of a toolmade according to my invention, indicating one method of its use.

Fig. 2 is a bottom view of the structure shown part of the construction brokeni V The plate 2| is also of greater len h the in-Fig. 1, with away. r a Fig. 3 is a view similar to Fig. 1 showing parts in a diiferent position. V

Fig. 4 is a partial section on the line 4-4 of Fi 3.

Fig. 5 is a view similar to Fig. 2 but showing another position of the blade in the. holder; and,

Fig. 6 is a view similar to Fig. 4 on an enis fashioned from a single sheet. of metal or other suitable material to, form a hollow handle portion which is concavo-convex in cross sec tional form and a flat 'bladel supportingplate l2, joiningfthe handle portion ll in ,the lcontractedand taperedpart I3. The free outer end of the handle portion is apertured asseen at H to permitthe hanging thereof onfa nail 'or other suppb ttl j I '.The plate l2 has curved side edges I5 continuousIwith the side edges of the handle I I and which terminate in relatively short straight edges [6 which extend outwardly through the free contractedend 'll of the plate in beveled side edges Ill formingwhat might be termed atriangular f outer'end portion'to the plate l2. The plate I2 is f provided with a drawn tubular portion l9 which is internally threaded to receives. milled clamp screw'20 which is employedto'move a clamp plate 2| in'thefprotection of' the plate I 2 in securing a doubleedged razor blade 22 between said plates. The plate I2 is provided with three fiqually spaced apertures 24 which are so positioned with respect'to' each other; and

to the beveled edgs 'lllfas to engage and sup- Po f set' bu arswds 5 rmedpn h c m plate 2| in s'everal positions of adjustment to. support the razor blade 22 with the freeedge 22a thereof exposed in the manner shown in Fig. 2, or as shown in Figs; 3 and 5, or in a position at right angles to the showing in Fig. 5; that is to say, with the edge 22a parallel to the opposed bevelededge I8 of-the plate l2 or the blade 22'm'ay be moved into a position at 180 to that shown in Fig: 2 so that the other edge 22b of thejblade is "disposed outwardly and theedge 22ais arranged upon the plate 12 within the-boundaries of the side walls 5 thereof.

In the latter position of the plate, 2|, the side edge-2m thereoi is arranged over. and projectsbeyond the edge22b and acts as a guard In practice, I'providea holder proper II.) which therefor and this will be the normally inoperative'position ofthe tool and the position in whichzthe tool will be normally kept when not in use and as it will be packed for shipment.

length oftheblade 22 sothat the corners of the razor blade will be protected. The screw v passes through the center aperture 26' of the razor blade, whereas-the studs pass through the other apertures 21 of the blade in the con- 'ventional construction of double edged razor will have to be handled, and'in fact, after; the

parts are coupled together in one relationship, the screw is only loosened sufiiciently to permit rotation of, the projecting ends of the lugs 25 over" the plate I 2 in moving the same into different positions ofadiustment as shown in Figs. 3 and 5, and as previously described.

When the parts are in the position shown in Fig. 2, the lugs 25 are disposed in juxtaposition to the Walls I8 and serve to key and retain'the plate 2| against relative movement of the plate [2, whereasv when one of. the .lugs is positioned within one of the apertures, 24, the plate 2|, is likewise keyed against rotary movement with respecttotheplate l2. i

, In Fig. 6. of the drawing. is shown a slight modification wherein a fiangedbushing '29 is sub-- stituted for the. flange :28 and, constitutes; a pressed or drive. fit upon the shank portion Zila of the screw 20 or may be sweated thereon to,.,re tain the screw against.displacementjfrorn the plate 2 I Otherwise, the device'asfshownfiri Fig. 6 is of. the same structure as that" shown in the other figures. I

My. inventionis not necessarilylimited to the particular form. of. the plate 2 herein disclosed, nor tot-he. manner of arrangingpr constructing the studs 25 thereon, it being-apparent that solid pins could be: rivetedto the. piers; and

accomplish. the. same result. oneiofthe' distinca I tive features of, the invention resides inthe simple manner of coupling, keying and bracthe clamp plate with the blade supporting plate of' the holder in the several positions of adjustment thereof in order to reinforce the mounting of the razor bladein the holder. Having. fully described myinvention, what I claimas newand desireto' secure by Letters Patent, is I 1. A. tool of the class clescribed comprising a handle portion a blade supporting part at andintegral with one end of the' handl e portion, said part having means for coupling a clamp screw therewith, a clamp plate movable towardand from, the first named plate by. said screw v.to

clam-pablade .between'f said plates, means on the; clamp-plate for keying the blade.;against relative movement thereon, said first named plate having apertures spaced circumferentially of said clamp screw for receiving said last named means in keying the clamp plate and blade against relative movement thereon in several positions of adjustment, and side edges of the first named plate being angularly arranged with respect to the longitudinal plane of the handle portion'to engage said keying means to provide in conjunction with said spaced apertures'universal adjustments of the clamp plate and blade with respect to the axis of said clamp screw.

' 2. In a tool of the classdescribed, a handle portion, a flat blade supporting plate at and integral v with one end of the handle portion, said'supporting plate having a threaded bearing,

7 the outerend portion of the plate having beveled side edges forming a substantially triangular end to said plate, said plate having apertures ,arranged: radially and spaced; circmnferentially with respect to the axis of said bearing, a clamp plate having spaced key lugs, a screw for detachably and adjustably mounting the clamp plate on said supporting plate with a razor blade therebetween, and said key lugs being adapted to register with the spaced apertures in the supporting-plateand with the beveled side edges thereof in keying'the clamp plate against retarymovement on the supporting plate in several positions circumferentially of said screw.

1 3. Atool of the class described comprising an elongated handle member, a. flat cross head at one end of the handle member forming a blade said supporting plate, said supporting plate having three apertures circumferentially arranged with respect to the axis of said. screw, and said clamp platehavingkey lugs adapted to engage outer. edges of. the supporting ,plate and the apertures of said, plate in mounting the razor blade 'with at least. one edge thereof longitudimay, of the handlemember, at right anglesto the handle 'member and 'at to the, handle memberfin .the several. circumferential positions of. adjustment of the blade on said supporting plate. V

'.' 1 ERIC W. ERICSSON.

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