US1736965A - Woodwork plow - Google Patents

Description

Nov. 26, 1929. R. L. CARTER WOODWORK PLOW Filed Nov. 3, 1928 v I 2 Sheets-Sheet Nov. 26, 1929. R. L. CARTER 1,736,965

WOODWORK PLQW Filed Nov. 3, 1928 2 Sheets-Sheet 2 Patented Nov. 26, 1929 UNITED STATES PATENT OFFICE RAY I. CARTER, 0F PHOENIX, NEW YORK, ASSIG-NOR TO R. L. CARTER COMPANY, INC.,

A CORPORATION OF NEW YORK WOODWORK PLOW Application filed November 3, 1928. Serial No. 317,058.

This invention relates to certain improve ments in carpenters plows, and has particular reference to a machine of this class, wherein the cutting element is rotated at highspeed by an electric motor-the operator simply propelling and guiding the plow.

The main object of the invention is the production of an instrument adapted for plowing, rabbeting, or beveling the edges or other surfaces of doors, sashes, or the frames thereof, for conditioning them for the insta-llation of weather-strips, and the like, which is extremely simple and light in construction, as well as highly eflicient and reliable in operation. A further object is to pro vide a main body formed with a plane bottom, that supports the motor and may be easily propelled and guided manually over the work. And a further object is to provide novel and simple means for adjustably securing the motor to the main body, whereby the cutting element may be readily and finely adjusted for varying the depth of the cutting, as well as for effecting bevel or angular cuts within a relatively wide range.

Other objects and uses relating to the specific parts of the device will be brought out in the following description, wherein reference is made to the accompanying drawings, in which- Figure 1 is a top-plan view of the complete device. Fig. 2 is a front end elevation of the same. Fig. 3 is a side elevation, taken in the direction of the long arrow in Fig. 2. Fig. 4

\ is a similar View, taken in the direction of the short arrow in Fig. 2. And Fig. 5 is an elevational view of the shoe that directly supports the motor, and is pivotally mounted upon one side of the main body.

In the drawings, 2 represents the elongated body of the plow, which is formed with a plane bottom 2 that frictionally engages the work, the said body being cut-away medially, as at 2, and the forward and rearward portions being integrally joined by an arch portion 2, to provide a relatively large transverse opening for the play of the out ting tool, as A, and for the effective expulsion of the chips and dust resulting from the action of the tool. The opposite ends of the body are fitted with upright handles, 33

by which the plow may be propelled manually. At the rearside of the body 2 is disposed a guide 4, which depends below the bottom 2, and is held in place by fasteners it which screw into an upright flange 2 that extends the length of the body. The guide 4 is adjustable vertically by means of slotted lugs or cars 43 through which the screws 4' extend. The plane of the guide 4 is preferably at right angles to that of the bottom 2 and tends to hold the body level and true to the work at all times.

5 represents any suitable electric motor which is usually enclosed in a cylindrical casing 5, and includes an armature shaft 6,

which preferably extends transversely across the body 2 within the arch 2 and upon which is mounted the tool A, as best seen in Fig. 2. The motor may be driven by current derived from any source, which may be supplied by wires 5 5 and the motor may be controlled by a switch, shown at 5 in Fig. 1. The motor casing 5' is preferably externally threaded and screws into a split cylindrical holder 7, in which the motor is adjustable axially, the holder being formed with external lugs 7 through which a' clamping screw 7 passes. One end of the holder 7 is cut-away to provide similar diametrically opposed arms 7. that extend beyond the casing 5', the tips of said arms being formed with outwardly projecting alining trunnions 7 by which the motor is swingable relatively to the body 2. The motor is supported directly by a horseshoe shaped member 8, which is operatively mounted upon the rear face of flange 2, to which the member is pivoted by a bolt 8 that screws into a threaded opening located at one side of the arch 2". At the opposite side of the arch 2 the flange 2 is formed with an upwardly curved slot 2, in which a bolt 8 carried by the shoe 8 plays, as shown in Fig. 2. By this arrangement, the motor and related parts may be raised and lowered bodily, by simply loosening the bolt 8, for varying the depth of the cuts by the tool A. The extremities of the shoe 8 are formed with pillow-blocks 8, to which caps 8 are applied, to form bearings for the'trunnions 7 and by which the motor is rendered swingable vertically for disposing the tool A at various anles relatively to the plane of the bottom 2', or effecting bevel or angular cuts. The 5 swing of the motor on the trunnions 7 may be determined accurately in degrees, by means of a scale 9, which is mounted upon a crescent-shaped member 9, that is rigidly secured to threaded lugs 8 .of the shoe 8, by screws 9 The member 9' is formed with concentric slots 9 9, the slot 9 being engaged by a thumb-screw 10, which is threaded into the holder 7, and by which the motor may be held rigidly in certain adjusted positions. The tightening of the screw 10 enables the motor and shoe to be swung on the axis 8 as one part. The slot 9 affords play for an indicator comprisingia small radial lug or boss 7 which is integral with the g holder, the said lug being inscribed with an arrow that points to the graduations of the scale 9, which denotes degrees that may be read in opposite directions from zero (see Fig. 1). The front end of the arch 2 is as closed during the plowing operations by a guard 12, whose top end is pivoted to the arch by a screw 12, the guard being resiliently held in different positions by the tension of a spring 13. 3Q Whenthe plans for certain work call {for the plowing of plain ,groovesin flat surfaces, the thumb-screw 10 is first loosened, for enabling the motor to be rotated on the trunnions 7 without disturbing the shoe 8, until the arrow indioator 7 points to Zero, after which the screw should be tightened. The next step is to loosen the bolt 8 for enabling the motor and shoe to be rotated on the axis 8, for adjusting the cutter A for plowing to 1 the required depth.

When it is desiredto bevel the edges of doors or sashes, the operator again loosens the screw 10 and swings the motor on the t-runnions 7 1in the proper direction, and to ;the proper degree according to the scale 9. This inclines thetool A, as indicated in Fig. 3, for either-beveling a surface or plowing an angular groove or recess.

Fromv the foregoing it will be understood that-cuts of many differentangles may be effected by my improvedplow, by simply rotating the motor on the trunnions 7 and that grooves of difi'erentdepths within a relatively wide range may be plowed, following proper adjustment by the rotation of the motor on the axis 8. Ordinarily, the breadth of the grooves and bevels may be varied by the use of tools of different size and shape.

Having-thus described my invention, what i I claim, is

-1. In a woodworking plow, a body adapted to :be manually moved over the work having a housing formed intermediate its ends, a curved shoe pivoted to said housing for movement in a plane parallel to the longitudinal axis of the body, a motor pivoted to said shoe for movement in a plane substantially at right angles to the shoe, and provided with a shaft and a cutting member carried by said shaft and disposed within said housing.

2. A woodworking plow, a body adapted to be manually moved over the work provided with an arched housing intermediate its ends, an adjustable curved shoe pivoted to said housing and movable in a plane parallel to the longitudinal axis of the body, means for securing the shoe in its adjusted position, a motor pivoted to said shoe adapted for movement in a plane substantially at rightangles to the body member, a shaft carried by the motor, and a cutter carried by said shaft and disposed within the housing.

3. In a woodworking plow, a body member adapted to be manually moved over the work, a housing formed on said body member, a shoe pivoted to said housing for movement in a plane substantially parallel to the longiudinal axis of the body member, a motor pivoted to the shoe for movement in a plane substantially at right angles to said shoe, a cutting member carried by the motor and disposed within the housing, a gauge secured to said shoe and disposed at right'angles thereto, and means connecting the gauge and motor for supporting the latter relative to the body member.

4:. In a woodworking plow, a body member adapted to be manually moved over the work, a housing on said body member having a slot therein, a curved shoe having one end pivoted to the housing and having its opposite end provided with means received in the slot, a motor pivoted to and disposed at right angles to the shoe, a cutting member carried by the motor and disposed within the housing, a supporting gauge secured to and extending at right angles to said shoe, and means connecting the motor and supportinggauge.

5. In a woodworking plow, a bodymember adapted to be manually moved over the work, a housing on said body member having a slot therein, a curved shoe having one end pivoted to the housing and having its opposite end provided with means received in the slot, a motor pivoted to and disposed at right angles to the shoe, a cutting member carried by the motor and disposed within the housing, a supporting gauge having a slot therein secured to and extending at right angles to said shoe, means connecting the motor and supporting guage, and a lug formed on the motor and disposed in the slot in said gauge to indicate the depth of the cutter.

In witness'whereof I affix my signature.

RAY L. CAR ER.

Images