US2540258A - Hand-operated electric powered dresser - Google Patents

Description

Feb. 6, 1951 T. J. HARRIS HAND-OPERATED ELECTRIC POWERED DRESSER 3 Sheets-Sheet 1 Filed Aug. 14, 1945 Feb. 6, 1951 T. J. HARRIS HAND-OPERATEDELECTRIC POWERED'DRESSER 5 Sheets-Sheet 5 Filed Aug. 14, 1945 jrwenfor 1779007615 vIHarr/ Patented Feb. 6, 1951 UNITED STATES PATENT OFFICE HAND-GPERATED ELECTRIC rowunun DRESSER 3-Qlai'ms. 1.

The present invention relates to woodworking tools, and is more particularly concerned with a hand-operated. electric; powered. dresser.

The. primary object (If the invention is to provide a, carpenters plane for wood dressing and sanding, which is; powered" by electricity but operated by hand.

Another object of the. invention. is to provide a. hand-operated, electrically powered carpenters plane of simpler more compact construction than is disclosed. by prior devices With the. foregoing and other. objects. and ad vantages in View, the invention consists of. the novel construction and arrangement of parts hereinafter described and claimed.

In the accompanying drawings illustrating, the v invention:

Figure l is a side elevation of the invention.

Figure 2 is a top plan view thereof.

Figure 3 is a vertical longitudinal section of theinvention.

Figure 4 is a transverse section on. line 4+4 ofFigure 3.v

Figure 5 is a transverse section on line 5-5 of Figure 3.

Figure 6 is a. fragmentary bottom plan view on line 6-6 of Figure I, viewed in the direction of the arrows.

Figure 7' is. a detail perspective view of the pivotal deflector to carry off dust. and shavings.

Figure 8 is a side elevation of the sanding cylinder.

Figure 9 is a plan view of a demountable plane edge tool for said cylinder.

Figure 10 is a. plan view of a demountable single groover.

Figure 11 is a plan view of a demountable double groover.

Like numerals; are used in the description and drawings to designate the: same parts of construction.

I is the flat, rectangular base of the plane and is provided with an enlarged transverse slot 2 for the dressing tools to; operate in. At the front end of the plane is a vertical steadying post or handle 3 secured to the base. Atv the rear end of the base is. av vertical handle: 4 and lever 5 which operates. a switch controlling: the electric. current from. cable 5.

An elongated, rectangular housing; 1 is mou-n ed. onv the base I between the two handles and provided with removable top; and side panels. The latter are provided with oppositely disposed openings and grilles, 8 toprovide a. current. of air forwardly- Mouuted on. atransverse slidable.

base 9;. seated in a beveled-edge channel or dovetail recess iii in the upper surface of the base, is a motor M which is secured in place by a screw it threaded through the top of the housing and intothe motor casing. This motor is located between the grilles.

A suitable distance in front of'the motor and above the slot for the dressing tools is located a rotatable cylinder" or drum; l2. It is provided longitudinally with a series of angular recesses S3 in which the dressing tools it are removably secured by set screws l5. The cylinder 12 is supported in depending bars l6 mounted slidably in vertical guide slots l? in the side panels of the housing. lhese bars are provided on their inner walls near their upper ends with sockets adapted to receive the outer ends of rocker arms l8 pivoted at the middle on studs projecting from lugs 29 depending from the under side of the housing top. The inner ends of the. rocker arms are raised and lowered by means: of a vertically adjustable block 29 and ball and socket joints H. The block is split for the purpose of installing the bearings. and secured together by thread ed bolts. A thumb screw 22 is threaded through the housing top and connected to said block by ball and socket. joint. The object of the foregoing mechanism is to raise and lower the cylinder l2 for attachment of dressing tools and to regulate the depth of the operation. At one end the cylinder is provided with a centered socket for the reception-of. a horizontal stud 2.3 projecting from one of the bars IE3 and interposed between the bar and the endof the cylinder in a spacing collar or enlargement 24 on the stud. The opposite end of the cylinder is provided with a series. of concentrically arranged studs 25 adapted to engage suitably arranged transverse holes in a pulley 26. This pulley is rotatably mounted ona stud 2.1 projecting inwardly from. the. opposing bar 56 and concentrically with the. axis of the. cylinder 12. This pulley is grooved peripherally for a transmission belt 2&1 which passes. around a grooved pulley 29. on. the shaft of motor M, and rotates the cylinder in a direction counterclockwise.

The front end of. the housing 1 is open and provided. on a vertical median line with a pivoted deflector 3.9. which has triangular top and bottom. 3!. and a. vertical side 32 connecting the top and bottom. at. their hypotenuses. Projecting outwardly from top and bottom, adjacent to the right. angle therein, are studs 33, the upper one of which is provided with projecting rib 33a. The; upper stud is adapted to engage a perforawill be standing with this end of the plane near him. As the cylinder operates counterclockwise so as to work against the material the current of air coming through the grilles will force the shavings and dust forwardly and opt at this end.

The under side of the base is grooved transversely, as at 35, with beveledside walls inclined inwardly for the reception of right-angle guides 35, adapted to be attached for the purpose of holding the plane square when cutting or smoothing edges or cutting grooves. The upper arms of the guides are suitably shaped on top to fit and slide endwise into said groove and set screws 37 are threaded at an angle through the corners to impinge the bottom of the groove and prevent lateral movement.

When it is desired to sand the work the cylinder l2 can be replaced by cylinder 38 which has sandpaper Al wrapped around and held in place by the transverse bar 35 and screws. A transverse groove iil in the periphery of the cylinder permits the bar to rest inside its perimeter and the ends of the sandpaper M are joined under the bar. The ends of this cylinder are constructed as described for the cylinder 32, but it has no peripheral recesses 13 such as those for the cutters is. When grooves are to be cut, the straight-edge blades M are removed and either 42 or 43 blades substituted. The former is provided with a single cutting tooth d4 adapted to cut one groove and the latter with two teeth 45 for two grooves.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A power plane comprising a substantially flat base plate having a transverse slot formed therein, handle means mounted upon the base plate to aid in manipulating the plane, a casing mounted upon the base plate and including substantially vertical spaced sides and a top, the sides of the casing being disposed near the opposite ends of the transverse slot, the sides of the casing being provided in their inner faces and adjacent to the transverse slot with transversely oppositely disposed substantially vertical grooves,

arms disposed adjacent to the tops of the slides and pivotally mounted between their ends upon the top of the casing, said rocker arms being disposed below the top of the casing and within the casing, the outer ends of said rocker arms pivotally engaging within the sockets of the slides, the inner ends of said rocker arms being spaced apart and disposed near the transverse center of the casing, a vertically shiftable swivel block mounted within the casing adjacent to the inner ends of the rocker arms and provided in its opposite sides with sockets pivotally receiving the inner ends of said rocker arms, a vertically shiftable adjusting screw mounted upon the top of the casing and extending through the casing and connected with the swivel block for shifting the block vertically to swing the rocker arms for raisingand lowering the slides, a motor mounted within the casing and spaced from the rotary cutter, and drive means connecting the motor and cutter.

2. A power plane comprising a substantially flat base plate provided between its ends with a transverse slot, handle means mounted upon the base plate to aid in manipulating the plane, a casing mounted upon the base plate and including laterally spaced upstanding sides arranged adjacent to the opposite sides of the base plate and a substantially fiat horizontal top connecting the tops of the sides, the upstanding sides of the casing being disposed near and outwardly of the opposite ends of the transverse slot, the sides of the casing being provided in their inner faces and adjacent to the slot with transversely oppositely disposed vertical grooves which extend substantially to the tops of the sides, elongated vertical slides mounted within the grooves for reciprocation, aligned laterally inwardly projecting trunnions secured to the slides near their bottom ends, a rotary cutter cylinder mounted within the easing adjacent to the transverse slot and projecting into such slot and extending transversely for substantially the entire length of the slot, the opposite end of the cutter cylinder being journalled upon the trunnions, the cutter cylinder being shiitable vertically with the trunnions and slides, the slides being provided near their top ends with transversely aligned recesses forming sockets, transversely spaced aligned depending lugs secured to the top of the casing and spaced laterally inwardly of the slides and disposed between the slides and the transverse center of the casing, substantially straight transverse horizontal rocker arms pivotally secured to the depending lugs for vertical swinging movement, said rocker arms being disposed near the tops of the slides and having their outer ends pivotally mounted within the sockets of the slides, said rocker arms extending upon opposite sides of the depending lugs and having their inner ends arranged near the transverse center of the casing in spaced relation, a bodily vertically shiftable swivel block disposed between the inner ends of the rocker arms and near the top of the casing and substantially at the transverse center of the casing, said swivel block being provided in its opposite sides with sockets pivotally receiving the inner ends of the rocker arms, the swivel block being provided in its top with a socket, a vertically shiftable adjusting screw mounted within the top of the easing and extending therethrough and having its lower end mounted within the socket in the top of the swivel block, said screw being turnable for shifting the swivel block vertically to raise and lower the cutter cylinder within the transverse slot, "a' motor mounted within the casing and 1 5 to drive the same, handle means mounted upon the base plate to aid in manipulating the plane, a casing mounted upon the base plate and covering the rotary cutter and extending longitudinally beyond the opposite sides of the cutter and having one end open, the casing'being low and including a substantially flat top, and a wood shavings deflector disposed adjacent to the open end of the casing and above the base plate and including top and bottom substantially fiat triangular plates, the top plate of the deflector being disposed substantially at the elevation of the top of the casing and pivotally connected at one apex therewith, the bottom plate of the deflector substantially slidably contacting the upper face of the base plate and being pivotally connected at one apex with the base plate, the deflector including a substantially flat wide vertical plate con necting the edges of the top and bottom plates opposite said pivotal connections and swingable horizontally with the top and bottom plates so that shavings may be selectively deflected from the opposite sides of the base plate.

THOMAS J. HARRIS.

6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 664,535 Dickinson Dec. 25, 1900 782,070 Smale -1 Feb. 7, 1905 803,804 Bolton Nov. 7, 1905 1,162,099 Paszkiewicz Nov. 30, 1915 1,270,023 Dyer et al June 18, 1918 1,357,985 Impalea Nov. 9, 1920 1,544,667 Loughner July 7, 1925 1,549,098 Magnusson Aug. 11, 1925 1,655,565 Reid June 10, 1928 1,760,818 Daderko May 27, 1930 1,830,151 Wilderson Nov. 3, 1931 1,980,056 Hedeby Nov. 6, 1934 2,069,923 Olson Feb. 9, 1937

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