US2100566A - Router - Google Patents

Description

NOV. 30, 1937. Q O m 2,100,566

ROUTER Filed Sept. 29, 1936 7 9:4 v INVENTOR:

Patented Nov. 30, 1937' UNITED STATES PATENT! OFFICE.

4 Claims.

This invention relates to and has for an object thereof, the provision of a router or like woodworking machine wherein an elongated out such as a slot of predetermined dimension may be quickly and accurately formed in the work thru the medium of an efiicacious manually controlled and power actuated means which effects such relative angular movement between the work and a rotary power operated cutting tool that said out will be made inone continuous motor powered operation of the machine without requiring the exercise of any particular skill by the operator or necessitating his attention except for an initial manual starting of the machine.

A further important object of the invention is to provide certain new, novel and useful improvements in woodworking machinery of the router type, and embracing a woodworking tool of said character in which all of the operative parts are arranged compactly in a main supporting frame, with simple and improvedv driving or operating means, operating simultaneously in a vertical and horizontal manner or cutting direction.

Another characteristic of the invention is that the machine is provided with propelling mechanism operating to automatically exert a bit forcing pressure thru the material worked upon simultaneously with the cutting operation.

Another characteristic of the invention is that the machine is provided with propelling mechanism operating automatically to release both the bit forcing pressure and the bit cutting operation from contact with the material worked upon simultaneously with the completion of the cutting of the material in a pre-determined manner.

A further characteristic of the invention, and an important object thereof, is the provision of a woodworking router employing but one motor for the dual operation of the dual propelling mechanism.

And a further object of this invention is the provision of a reciprocating cutting mechanism making a clean out through the Woodstock, either from the edge thereof, or centrally disposed therein, the invention in the latter feature being of great value particularly when used in connection with the manufacture of Venetian blinds for the cutting of the elongated slots in the multiple number of slats comprising said class of window shades.

I attain these objects by the router comprising my invention as disclosed by the appended drawing in which Figure 1 is a plan of typical cuts made by my router;

Figure 2 is an elevational view of my router, partly in section;

Figure 3 isan end view thereof partly in section;

Figure 4 is a section on the line (I-4 of Fig. 2, and

Figure 5 is a section on the line 55 of Fig. 4; i

Similar numerals indicate like parts throughout the several views, the woodworkers routing tool herein disclosed comprising a frame F supporting a table top T for supporting the material M during operation of the tool. The top T carries a guide G and is provided with an elongated aperture I thru which a cutting tool 2 operates; the same being operatively supported in a chuck 3 suitably carried by a shaft 4 of a, motor 5. A suction fan- 6 may be suitably secured to the shaft 4 for drawing the waste material produced during the cutting operation away fromthetool, and said material may bev readily disposedthru an aperture I of a flexible tube 8' securedat one end to the underside of the table top T, and at the other to a suitable closure 9 carried by the housing of the motor 5. Said motor "is" secured by means of studs III to a slide plate H which is supported for a reciprocating movement horizontally upon a guide plate I2 which is secured as by screws I3 to a slide plate I4- reciprocal vertically in a groove I5 formed in a bracket I 6 attached by studs IT to theframe F.

A slot I8 is formed in an offset end of the plate II to provide means for connecting one end of a connecting rod I9 to said plate as by means of a bolt 20 which also serves as an attaching means for one end of a rod 2I to said connecting rod I9, the other end of said rod 2| being pivotally connected to a shelf 23 carried by the frame F.

A gear case 24 is suitably mounted upon the shelf 23, the reduction gears contained therein, but not shown being driven from a motor 25 by means of pulleys 26, 21, 28, and 29, belts 30 and. 3|,

and a shaft 32, said shaft being journaled in bearings 33 and 34 carried by the frame F.

A crank arm 35 is carried and driven by the shaft 32 and is connected to the plate I I by means of the connecting rod I9 and the stud 36.

A stud shaft 31 driven by the motor 25 thru the reduction gearing in the case 24 has'keyed thereon a slide clutch member 38, the teeth 39 of which are disposed to engage teeth 40 of a collar 4| formed on or suitably attached to a crank arm 42 loosely mounted upon the outer end of the shaft 31.

A connecting rod 43 is attached at one end by means of a stud to the crank arm 42, and the other end thereof is attached by means of a stud 45 to the plate M. The clutch member 38 is shifted by means of a yoke 46 secured to a rocker shaft 41 journaled in a bearing 48 which is suitably secured to the shelf 23. v

A lever 49 is keyed to an outer end of the shaft 4! and is connected as by means of a link 50 to a treadle 5|. One end of the treadle is pivotably connected at 52 to the frame F and its other end is movably positioned within a guideslot 53 formed by the suitable attachment of .a plate 54 to the frame F.

A spring 55 is provided having one end at-' tached to the lever 49 and the other end attached to the bracket 16.

The relative position of the several component Darts as is herein disclosed forms but one of a number of ways in which the same may as readily be operatively installed, and in operation, the Woodstock to be worked upon is ordinarily manually held to the table top T for speed inoperation, but mayby suitable clamping 'means as readily be mechanically secured thereto.

With both the motors 5 and 25 in operation, the treadle 5! is depressed under foot pressure, whereby the clutch member 38 is engaged with the collar 4! by means of the intervening link 50,

the spring 55 operates to restore the clutch out of engagement in inoperative or free position as shown by Fig. 2.

The one-half revolution of the crank arm 42 just described drives the tool 2 upwardly thru the material M by reason of the motor 5 being gradually raised or rather forced upwardly thru operation of the connecting rod 43, stud 45, plate l4, screw l3, plate [2 and studs ID. Simultaneously with said upward movement of said motor 5, the cutting bit ,or tool 2 is forced against the Woodstock material M or whatever be its character, and gradually therethru, the tool 2 being rapidly rotated while in said upward movement by means of the motor shaft 4, and simultaneously therewith, a further or third, or reciprocating movement of said tool is effected in the following manner. The shaft 32 driven from the motor 25 rotates the crank arm 35 to effect a horizontal reciprocation of the plate I! by means of the stud 36, connecting rod I 9 and stud 20, said operation in turn eifecting a horizontal reciprocation of the motor 5 by reason of its attachment to said plate.

By means of the suitable reduction gears within the case 24 the ratio of revolutions between the crank arm 35 and the crank arm 42 may be approximately forty to one. It will therefore be understood that the reciprocation of the tool 2 within the slot I as seen in Fig. 1 is more rapid than the upward movement of said tool within said slot as seen in Fig. 2, the operation of said tool thus producing an elongated slot 56 within the .material, and this regardless whether the cutting process is commenced at an edge of the stock or centrally disposed therein, a sample of each of said cuts being shown in Fig. 1. It is also possible to sever the stock from edge to edge should that be desirable or necessary for the lack of a saw. I 7 As hereinbefore described, the pull of gravity upon the motor 5 and the respective parts connected thereto, acts to complete the last half of each revolution of the crank arm 42, wherefore it is necessary to exert pressure .upon the foot treadle T for each separate cutting of an elon-' gated slot to be produced in the material M, for although the tool continues to simultaneously rotate and reciprocate, it nevertheless is caused to move or rise upwardly only at the instigation of the operator by the depressing of said treadle.

The slot I8 is provided to permit the upward movement of the plate ll simultaneously with the reciprocating movement of said plate. The rod 2| is arranged to prevent an upward movement of theendof the connecting rod l9 carryextremely simple in construction, durable, positive in operation, and assures an even clean out elongated slot, free from rough edges and burrs.

I am aware that slight modifications may from time to time be made in the details of structure illustrated without departing, however, from the scope of the present invention, and as defined in the claims which are appended hereto. Hence, I do not limit my present invention to the exact description of construction herein disclosed, but what I do claim is:-

1. In a machine of the character described, a frame, a work support thereon, a rotary cutting tool, a motor for rotating said tool, and power actuated means for moving said tool both horizontally and vertically against and relative to the the work supported on said work support, said means including a continuously operating means for moving the tool' horizontally and means mannually controlled for effecting the vertical movement of the tool at will.

2. In a machine of the character described, a

frame, a work table having a slot therein, a rotary upright cutting tool movable within and thru said slot for engagement with the work supported rotary and horizontal movements, and a manually operable control means operable to initiate the starting of said vertical movement, said first named means including a continuously operated device connected with said second named motor, and said second named means including a manually operable'means for establishing a drive connection with said last named motor. 7

3. In a machine of the character described, a frame, a work table thereon having a tool receiving opening therein, a vertically reciprocal member in said frame, a horizontally reciprocal carriage supported by said member, a rotary cutting tool supported by said carriage and being extensible thru and movable in said table opening, a motor for rotating said tool, another motor, a drive connection between the second motor and said carriage, a drive connection between said second named motor and said vertically movable member, and manually operable clutch means for controlling the last named drive connection for the operation of said tool.

4. In a machine of the character described, a

reciprocating power driven tool simultaneously operating in a vertical and horizontal sequence to out an elongated portion in material brought in contact therewith, means for driving said tool horizontally, and independent means for driving the same vertically, operation of said last named

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