US2350157A - Scraper - Google Patents

Description

' May 30, 1944. J. A. 01555 SCRAPER Filed Sept. 13, 1943 INVENTOR. JOSEF A. DI SSE ATTORNEYS 1 1:2 -lzlziif u Patented May 30, 1944- ED STATES PATENT OFFICE SCRAPER Jose! A. Disse, Detroit, Mich. Application September 13, 1943, Serial No. 502,231

. .11 Claims.

The invention relates to scrapers of that type usually employed in the faces and for like purposes.

It is the object of the invention to obtain a construction in which the scraping-tool forms a relatively small I however, is firmly attached to the operating handle and can be removed or replaced whenever necessary. e j A The invention therefore consists in struction as hereinafter set forth.

In the drawing: o, o Figure 1 is a plan view of my improved scraper. Figure 2 is a central longitudinal section on line 2-2, Figure 1. M

Figure 3 is a sectional side elevation showing the scraping tool disengaged from thehandle;

Figure 4 is a perspective view of the scraping tool. l

Figure 5 is a plan with the scraping tool de-j tached illustrating a modified construction. Figure 6 is a perspective view of the tool tomthe construction shown in Figure 5. I, v

Figure '7 is a longitudinal sectionillustrating a modified constru tion of locking means for the tool.

My improved scraper consists essentially of a handle A and connected shank portion B forming the greater part of the leng'th of the instrument, and an attachable tool Cadapted to be rigidly connected to said shank. The tool member C is formed of a high-grade steel or other suitable cutting metal and, asshown in'Figure 2 and Figure 4, has a blade portion C of sufficient length to provide for successive sharpenings and an oflset portion 0 for connecting with the handle shank. 'Between these portionsis a connecting shoulder portion C which abuts against the end of the shank B to transmit all work stresses thereinto. The shank 'B" has a forwardly projecting finger portion B which passes through a channel in the portion C and bears against the upper side of the portion C. The offset portion C bears against the upper face of the shank B and is held in firm contact therewith by a locking member D. 'This'member is formed with a'return bent hook D at itsforward end for engaging a recess C in the portion C There is also a pivotal toggle link D connected to the rear en'd of the member D and also to the shank B, being adapted to draw the rearward and to hold the portion C down upon the shank. The link D? has an oper: ating portion D which in the position shown in Figure 2 rests upon the top of the shank, with the pivotal portion of the link located in arecess B in said shank. In such position, the tool C is rigidly secured to the shank B and'functions the same as if formed integral therewith. However, by lifting the operating portion D, the

truing of 'metal sur-' part of the structure which,

link D will be swung outward, carrying the member D with it and disengaging the hook 'D' from the recess C new tool may be substituted therefor.

fThe modified construction illustrated in Figure 5 and Figure 6 tion previously described, with the exception that in the former the channel C for receiving the finger B is in the center of the portion C whereas in the modified construction a pair'of spaced fingers B engage channels C upon opposite sides of the portion 0 center. The locking will be just the same and will secure the tool rigidly to the shank B.

One important advantage of the construction isthat the stress produced by the scraping ac; tion is transmitted directly from the blade G into the abutting handle shank B. This avoids any tendency for the blade to spring out of shape when being used. Also the fact that the voffset portion C is held down upon the shank B and that the finger B or fingers B press down upon the blade portion C, will prevent any flexing of the tool at the joint between the same and the handle shank.

The tool forms only a small portion of the instrument, so that when made of high-grade metal its costs will not be excessive.

I Figure 7 illustratesa modified construction of locking means for the tool in which there is substituted for the return bent hook D an adjustable screw D having a threaded engagement with an angle portion D on the member D. This permits of adjustment to compensate for any wear and insures that the tool will always be held firmly in abutting engagement with the shank.

Another veryiirnportant advantage of the con-. struction is that the portions C an'dC of the tool are exchangeable in positions so that either one may be used for the scraping. edge. This-doubles the life of the tool and also permits of, having scraping. edges formed .01? a different character on the two portions C and C It is also possible to form thesescraping edges ofany desired contour not necessarily straight. This is for the reason that the thrust of the tool is takeninto the. shank through the shoulder portion C 1 -Astill further advantage of the construction is that the scraping edge may be the full width of the tool and there is nothing in the handle or lockingmeans projecting beyond this width. Consequently, the operator may scrape a surface in the work "extending into a corner Without"interference. l

What I claim as my inventionis': r l T r 1. A- scraper comprising a'handle provided with a forwardly extending shank and a tool detachably engaging said shank, said tool being Thus, thetool maybe easily: removed and replaced, and when worn out, a

is similar to the construc-' which is in the against said shank to transmit working stresses thereinto, I

and the ofiset portion being clamped to said shank, and a finger projecting,frornsaid-shank through a channel in said tool to overlap the blade portion thereof.

3; Ascraper comprising ahandleprovided with, a, fo r dly,extending;shankand atool detacha: gaging said shank, said tool .beingformed with a blade portion, a securingportion ofiiset into a parallel plane, and a portion connecting said; bladeportion and securingzportion forming-ashoulderfor abutting against the end of said: shank, said connecting portion having; a

channel therethrough, a finger projecting. from said shank, through said channel to overlap and bear-ag inst said blade. portion, and clampingmeans: for holding said connecting portion ag in t sa1d-shoulder-and said securing portion sttherupperiace ofsaid; shank.

" .1 scraper comprising a handle. proi ided with. a,;forwardly, extending shank and autool det hablyengaging saidshank, said tool being form witha bladeportion, a; securingportion I intoa parallel planev and a connectingporn. r tion betweensaid blade v forming-a shoulder for: abutting against theend oi saidshank and having. a. channel formedtherethrough, a finger. projecting from said shank to .ext.en dt a nd bu s? locking means comprising a, memberhaying a return bent hook, at its forward end, for engaging a reness n. said, connecting portion, and a toggle link pivotally connecting the rear end of said member to said shank, said toggle link when turned into its folded position occupying a recess in said shank.

rough said channel to overnstsaid blade portion, and

5. A scraper comprising a handle provided with a forwardlyextendingv shank andv a tool detachably engaging said shank, said tool being formed with a blade portion, a securing portion. offset into aparallel plane and a connecting portion between said blade and securing portions forming a shoulder for abutting against the end of said shank and having a channel formed therethrough, a finger projecting from said shank toextend through said channel to overlap and abut against said blade portion, and lovckirtlg means comprising a member having a return bent hook at its forward end for engaging a recess in said connecting portion, and a toggle link plvotally connecting, the rear end of said member to said shank, said toggle link when turned into its foldedposition occupying a recess in said shank, and-an'operating portion of said toga-lelink-for turning the same resting against said=shank in the locked position ofsaid locking means. i

6. A scraper comprising a handle prov ded with aforwardly extending shank and an attachable tool, thelatter being formed with a blade portion, a securing portion ofiset into a parallel. plane, and a connectingportion forming a shoulder for abutting against the end of said shank, said conand securing portions necting portion having a central recess extending therethrough, said shank having a forwardly projecting finger passing through said recess to overlap and bear against said blade portion, and clamping means for engaging. said securing portion tozhold the s-amef against the'top of said shank and to hold said shoulder against the end of. said shank.

' 7. A scraper comprising a handle provided with a. forwardly extending shank and an attachable tool, the latter being formed with a blade portion, a securing portion offset into a parallel plane, .and a connecting portion forming a shoulder for abutting against the end of said shank, said connecting portion having channels therethrough onopposite sides of thecenter thereof, apair of; spacedl'fingers, projecting forward from said shank and passingthroughsaid channels to overlap said bladeportion, and clamping means for engagingv said, securing portion to hold the sameagainst the upper. faceof said shank to also holdsaidsshoulder against theend of said shank.

8. A- scraper compr singa handle provided with a forwardly extending shank, a tool detachably engaging said shank,.said-,too 1 having offset opposite end portions, either one orboth of which form scraping edges being also provided with an intermediate, shoulder portion for abutting against-said. shank totransmit working stresses thereinto, and means for clamping the rearwardlyextendingeofiset portionto said shank.

9. A scrapercomprisingahandle provided with a. forwardly. extending, shank, a tool detachably engaging said shank, said tool being formed with oppositely extending ofiset end portionswith a shoulder. portion, therebetween, and means for.

clamping said tool with oneofisaid offset portions overlapping said shank and, with said shoulder portionv abutting against the. end of the shank, said. clampingmeans including a return bent hook engaging said shoulder portion and adapted to draw the sarneinto abutting: engagement with said shank.

10. A. craper. comprising a handle provided witha forwardlyextending shank, a tool detachablyengag inglsaid, shank havingoppositely extending offset, portions with ashoulder portion therebetween, one, of said offset portions bein adapted to overlap said shankv with the shoulder portion abutting against the end of the shank, and locking, means for said tool comprising a toggle lever.pivotallyconnected to said shank and overlapping. the portionof the, tool overlapping the shank, the freeend of. saidtoggle lever having. a hook, portion for drawing said shoulder portion of the. tool into abutting engagement.

11. A scraper, comprising a handle provided with a forwardlyextending shank, a tool detachably engaging'said shank having oppositely extending ofiset. portions witha shoulder portion therebetween, one, of said ofiset portions being adapted to overlap said shank; with the shoulder portion. abutting, against the end of the shank, and lockingv means for said tool comprising a toggle lever pivotally: connected at its rear end to said shank and. e 'rtending over said overlapping portion of the tool, the forward end of said toggle having an. angle portion overlapping said shoulder, portion and an adjustable bearing on said angle" portion for engaging said shoulder portion whereby the latter may be drawn by said toggle, lever into abutting engagement with the ankv JOSEF A. DISSE.

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