US2960124A - Power operated hinge-seat cutting hand tool - Google Patents

Description

Nov. 15, 1960- A. M SUNDBY POWER OPERATED HINGE-SEAT CUTTING HAND TOOL F 1ed Dec. 22^ 1958 energize the n10tor 23 by depressing the Switch 18 to rotate the circular blade saw 25. It wi11 be understood that the depth of the cut has been previously deternlined ald set by adjustment of the had SceW 20. T'hus With the saw blade rotating, the tool iS advanced t() its Work by llanual downward pTessure on the tool by the operator until the lower end portion of the hand screw 20 engages the stud zz in the base plate Both the cuts fol the respective hinge ateS l are nlade sinlultaneus1y and in exact op...0sed algnInent assuring a perfect t and roper hanging 0f the d00r. (bviously, the same Oce dure would be fouowed in I11a1 ing the subsequent cuts for the center and lower hngeS on a d00r and the jan1b. The tool is neely Temoved from the position of the iust noted cut and placed in proper 1)0Sition by i11serting the Hanges 7 and 8 between the mounted edge of the door and he janlb While the door Temains in position.

Whe there are herein disc10sed but a limited number of embodiments of the Structure, rocess and p0duct of the invention herein presented, it is p0sSibe to produce Still other enbodiTnentS Without departing fTO1 the inven tive concept herein disc10sed, and it is desifed, therefore, that only Such linitations be i1111osed on the appended daims aS are Stated herein OT Tequired by the rior at' what I claim is:

1' A 0-vered hand t00l for SilT1111ta11e0usly cutting hinge-Seats for a d00r and a d00r iaITlb to Teceive opp0sed hnge plates, con1prising in combination, a base plate, a Supporting am hingedly mounted on sad base 1)late for pivotal movement relative to the base plate, an electric motor rigidly Secued to said supporting arm and cutting nleans driven by Said n10tor, Said cutting nleanS being advanced t0 its vvofk by nanllally inlpatted ressure on the Supporting arm and itS nOunted components.

2 A powered hand t00l OT SiInulaneously cutting hinge-Seats for a d00r and a door j2Ltnb to receive opp0sed hinge plates, c0mprising in c0[nbination, a Telatively thin and Hat rectangular base late, a )ail' Of depending anges integral With the Tight hand edge portion of said base plate, Said anges beng at right angles to the suTface of the base 1ate, a rearwadl o ectin elon ated su )()Tting an1 hingedly mounted at one end portion of the base plate, thus permitting pivota1 movement, of the Supporting arnl, and means nornlally holding said supporting an1 in a Tetracted position Telative to the ba'se plate, an electric ]Ilotor energized by a Switch integral vvith the suppofting artn, and cutting means in the forn1 0f a ci1-cular Saw driven by the electric motor and advanced t0 its Work as downward pressure is exerted on the sup porting arm 3. The structure deiined in claim 2 further including means to limit the downward movement of the supporting arm and its mounted c0mponents, and 1Tleans for l0ckng said position 4- A Povvered hand '()()l for Sinultane0uSly cutting hinge-seats for a door and a door jaInb to receive opposed hinge 1ates, con prising in combination, a Telatively thin and at, rectangular base plate, a pair of depending angeS integra1 With the tight hand edge portion of the base plate and at Tight angles theret0 to aord a Spacer and alignment means for the tool when the Same is positOned on its Work, Said 1angeS being spaced apart longitudinally to aord a passageway therebetween, a rear Wardly projecting e10ngated supporting arm hingedly mounted at one end portion to the base plate thus per mitting pivota1 upward Svvinging novenlent of the Sup porting arm, a hand grip f0med in the rear end 1)0Ttion of the S11) )()rti11g arn1 and spring neanS 1()I'1Ilally holding the Supp0fting arm in retracted position telative to the base plate a hand Screw having Screw hl'eaded engage ment With the Tear eIld portion 0f the supporting arm cooperating with a stop nlember in the base plate to lin1it the downwaTd movement of the supporting arm, a geated electric n10tor secured to the underside 0f the supporting all Substantially at its 10I1gitudina1 center, Said Inotor being actvated by a trigger Switch adjacent the hnd1e portion of tIle Supporting arn1, and a circular saw diVen by the geared electric motor and advanced to its w0k by maua d0mWard pressure on the handle portion 0 the Supporting arm lefeenceS (ied ill the file of this patent UNITED STATES PATENTS 768,os8 Mackenzie Aug. 23, l04 l 016,34l Lowden Feb. 6, -19 12( 2,348,406 0gren May 9 1944 2 674 280 Pierce Apr. 6, l94 2,778,lzl Guerrant jan 22, '1957 2,80l,6js zem Aug. 19S7 2 8S4 761 Graham Oct. 7 -1958

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