US1670646A - Floor scraper - Google Patents

Description

- May 22, 1928.

A. w. ABRAHAMsEN "21 FLOOR SCRAPER Filed April 6, 1927 Patented May 22, 1928.

UNITED STATES PATENT OFFICE.

ALFRED 'W. ABRAHAMSEN, OF QUEENS VILLAGE, NEW YORK, ASSIGNOR F ONE-HALF 'I'O ANDERS SKARSTEN, 0F QUEENS VILLAGE, NEW YORK.

rLoon semen.

Application filed April 6, 1927. Serial No. 181,805.

have usua ly comprised a lar'ge blade sharpened at one end and supported in some suitable form of holder. These blades however quickl became dull and time must be taken to resharpen them or else they must be thrown away and new blades substituted. As the blades are of considerable size, the throwin away of the blade involves quite a loss. herefore, the object of the present invention is to provide a detachable cutter, small in size, inexpensive to make and which when it becomes dull can be thrown away without involving any appreciable money loss.

In the drawings accompanying and forming a part of the specification, Fig. 1 illustrates the present improved floor scraper shown attached to a conventional form of handle, although various forms of handles may be used, if desired; Fig. 2 is a back view of the blade which is shown about full size; Fig. 3 is a sectional view taken on lme 3-3 thereof; Fig. 4 is a face view of the blade; Fig. 5 is an enlarged detail view of a portion of the blade shown about twice the size of the actual blade; Fig. 6 is an enlarged detail, partly sectional view of the cutter shown about three times the size of the actual cutter; Fig. 7 illustrates a modified form of the blade and its cutter; Fig. 8 illustrates another modified form thereof and Fig. 9 illustrates a still further modified form thereof. 0 Similar characters of reference lndlcate corresponding parts in the several vlews.

Before explaining in detail the present improvement and mode of operation thereof, I desire to have it understood that theinvention is not limited to the details of construction and arrangement of parts which are illustrated in the accompanying drawings, since the invention is capable of other embodiments, and that the phraseology which I employ is for'the purpose of descript-ion and not of limitation.

" As hereinbefore stated any suitable form of handle may be used, this not being an essential part of'my invention since the blade and its cutter may be used without such handle.- In the handle 2 shown as the conventional form the blade 3 is positioned, and this blade may be permanently or otherwise fixed thereto since it does not have to be renewed 'unless it should lose its resiliency. This blade 3 heretofore had its lower edge sharpened and as stated when worn either had to be resharpened or the entireblade thrown away. In the present improvement, the lower end of this blade 1s suitably formed or bent to receive a detachable cutter 4. In the form shown in Figs. 1 to 5, the lower end of the blade is bent upon itself to provide a U-shaped channel 5, and in this U-shaped channel is inserted the detachable cutter 4 shown in Fig. 6, which comprises a similar but inverted U-shaped back 6 for insertion endwise into the U-shaped channel 5 of the blade and a cutting portion 7 bent substantially at right angles to this U-sha-ped" back 6. In the form shown in Fig. 7 the cutter 4 is provided with a T-shaped projection 8 for insertion into a similar form of groove 9 located or formed at the lower end of the blade 3'. In Fig. 8, the connection between the blade and its cutter is of dove tail form and in Fig. 9, this connection is also of dove tail form, but the dove tail ortions are of circular formation 10. In act all of the ways for attaching the cutter to the blade may be generally considered as of interlocking or dove tail-form especially. since all of the grooves in the blade have substantially a U-shaped form.

In practice, .both ends of the blades may be similar] formed if preferred for the attachment 0 cutters'whereby one cutter may be used for a mu h finish while the other may be used for a ner' finish.

It will be observed that the slot 11 formed adjacent the edge of the U-shaped portion ofthe holder is'c'urved in the direction of its length as at 12. Consequently as the cutter which is more or less resilient is inserted endwise into its holder the cutter is likewise curved in the direction of its length.

The advantage'of this is two-fold, first itprevents the ends of the cutter from digging into the wood and secondly bymeans of the resilient character of thecutter it effectively holds the cutter in place to such anextent that a pair of pliers is necessary to pull it out of the blade so that the cutter is rigidly held against any movement independently of its blade whereby it will effectively performits work. Y

Thus, it will be observed that the end of the blade is either formed or bent upon-itself to provide a suitable receiving channel for the reception of the cutter which is detachable therefrom by drawing it endwise from the blade and that this cutter simply comprises a suitably formed back and a bent v sharpened edge portion for insertion into the similarly formed art of the blade.

The cutter of this oor scraper thus comprises a body. or back formed with or having means .for interlocking it with a holding member or blade anda cutting edge bent at an angle to the body, this bent cutting edge being preformed,--that is, formed during the-manufacture of the cutter and before its attachment to the blade, so that when inserted into its holding member or blade it is ready for use.

It is to be understood that by describing in detail hereinany particular form, struc-' ture or arrangement, it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art.-

Having thus ex lained the nature of my said invention an described a way of constructing and using the same, although without attempting to set forth all of thei'forms in which it may be made, or all of the modes of its use, 'I claim:

' 1. A floor scraper comprising a blade and an endwise detachable cutter, secured to the blade, said cutter and blade having similarly formed connecting or interlocking means for the insertion of one part into the other, one of which is curved in the direction of its length. I

" 2. A floorscraper comprising a blade and an endwise detachable cutter secured to the blade, said cutter and blade having similarly formed connecting or interlocking means for the. insertion of one part intothe other, said interlocking means comprising dove tail portions extending crosswise of the blade and cutter, and one of which is curved 'curved portion the two having such engage ment that the blade maintains a similar curvaturc'to'the cutter when attached to the blade.

6. A fioor scraper comprising a blade and a detachable cutter, one formed to receive asimilarly formed portion of the other, the blade having a curved portion tending to impart andmaintaining a similar curvature to the cutter.

7. A floor scra er comprising a blade having a part shape or bent upon itself to rovide a channel, and a detachable cutter havinga cutting edge bent at an angle thereto and a part shaped or bent to conform to that of the blade whereb 'thecutter will be interlocked to prevent ateral disengagement while permitting endwise. disengagement.

' -8. A floor scraper comlp'isi'nga blade hav-, ing a part shaped or nt upon-itself. to provide a channel, and-a detachable'cutter having a 'cuttin edgeand apart shaped or bent to con orm 'to that of the blade whereby the, cutter will be interlocked to prevent lateral disengagement while permitting endwise disengagement, said blade also having means tending to impart and maintaining lengthwise curvature to the cutter. 9. A floor scraper comprising a blade having a U-shaped end' and a. detachable cutter having a back formed to inte'rlock with the blade and provided with a cutting edge bent at an angle thereto.

-10. A floor scraper comprising a blade having" a U-shaped end and a detachable" cutter having a back formed to interlock with the blade and provided with a cutting edge, said blade andcutter havingone means tending to. impart and maintaimng lengthwise curvature to the cutter on the attachment thereof to the blade.

11. A floor scra er' comprising a blade and an endwise detac able cutter having a cutting edge bent at an angle thereto.

12. A floor scraper comprising a blade and an endwise'detachable cutter having an ed e bent at an angle thereto and curved in t e direction of. its len h. i

13. A cutter for a oor scraper comprising a bod and a cutting edge bent during the manu acture of the cutter at an an 1e to the body, said body having means for interlocking it with a holdin member.

14. A cutter for a cor scraper com risin a body bent upon itself to form a c anne and a cutting e e bent during the manufacture of the cutter at an angle to such body. a body straight in the direction of its length 10 15. A cutter for a floor scraper comprising and having means for interlocking it w1th a body straight in the direction of its length a holding member having a curved-formed and bent upon itself to forma channel for channel, and a cutting edge bent at an angle 5 interlocking it with a holding member havto the body.

ing a curved-formed channel and a cutting Signed at Room 1822, Park Row Bld 15 edge bent during the manufacture of the cut- New York, N. Y., this 30th day of Marc ter at an angle to the body. 1927.

' 16. A- cutter for a floor scraper comprising ALFRED W. ABRAHAMSEN.

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