US2734535A - neubauer - Google Patents

Description

Feb. 14, 1956 c. A. N EUBAUER PLANE Filed June 7. 195.0

IN V EN TOR.

United States Patent PLANE Charles A. Neubauer, Baltimore, Md.

Application June 7, 1950, Serial No. 166,610

2 Claims. (Cl. 145-14) My invention relates to planes known as mortise, dado, router, rabbet and the like; and the primary object of the invention is to provide a novel member which is adjustable for restraining the bite of theblade before the cutting range of the blade is controlled by the sole of the stock when cutting below the surface, secondly, to provide novel screw arrangement to facilitate adjustment of the restraining member and the blade relatively to each other and in relation to the sole, thirdly, to provide means for clamping the blade to the restraining member to retain their cooperative position while they are being adjusted to position relative to the sole to limit the cutting range of the blade.

Another object is to provide a clamping bow which is adjustable to operate as a shaving breaker below the sole of the stock and also have a restraining effect on the blade.

Another object is to provide novel means for readily replacing the guide to its former adjusted position.

Another object is to provide novel means to overcome the binding effect of two sliding guide rods when adjusting or attaching a guide to the plane stock.

Another object is to provide graduations for the convenience of adjusting the guide.

Another object is to provide novel means for replacing the spur to its former adjusted position.

Another object is to provide means for widening the sole surface at one or both sides of the stock.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the novel construction, arrangement and formation of parts as will be hereinafter described, claimed and illustrated in the accompanying drawings, it being understood'that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

in said drawings, Fig. 1 is a side elevation of a plane embodying my invention for restraining the bite of the blade, and showing the same as it is used for finishing a mortise for a hinge plate.

Fig. 2 is an enlarged section on line 22, Fig. 1, looking in the direction of the arrows showing the adjustable guide in its operative position, and also showing graduations which may be provided for the convenience of ad justing the guide.

Fig. 3 is a view similar to Fig. 2 with two supplemental soles in position to widen the sole surface for routing or finishing dadoes, and also showing some modification of a guide arm.

Fig. 4 is a modified form of a guide arm and a guide rod, and also showing a slidable collar which may be used as an adjustable shoulder on either style of guide rods.

Similar numerals refer to similar parts throughout the several views.

Sectional designation of the plane-stock is, the side 6,

ice

2 the sole 7, the frog 8, the handle 9 and the reinforcements 10.

For the purpose of restraining the bite of the planeiron or blade 11 when cutting below the surface as in routing, finishing of dadoes, mortises for hinge plates and similar work, a novel member has been provided and will be referred to as a subsole 12, the proportion to which the cutting edge of the blade 11 is adjusted to extend below the subsole 12 determines the depth to which the blade 11 can cut with each forward stroke of the plane before the cutting range of the blade 11 is controlled by the sole 7, whereas the proportion to which the blade 11 is adjusted to extend below the sole 7, determines the depth to which the blade 11 will out below the surface of the board as shown in Fig. l. The subsole 12 also affords support for thin blades.

If desired an adjustable clamping bow 13 may be provided to impart rigidity to the blade 11 and be made adjustable to operate as a shaving breaker, thus also restraining the bite of the blade 11. A longitudinal slot 14 is formed in the bow 13 in line with a longitudinal slot formed in the blade 11 and a shorter slot formed in the shank 15 of the subsole 12, a screw 16 extends through these slots to engage a tapped hole provided in the frog 8 to clamp these members in position.

If desired a screw 17 may be provided to extend through the slot 14 and the slot formed in the blade 11 to engage a tapped hole provided in the shank 15 of the subsole 12 to hold the subsole 12 in its cooperative position with the blade 11 while they are being adjusted to position relative to the sole 7 to fix the cutting range of the blade 11.

If desired a screw adjustment may be provided to facilitate the positioning of the subsole 12 relative to the sole 7, Fig. 1 shows an arrangement where the shank 15 marges into a tail piece 18 which is provided with an opening to fit about the neck of the screw 19 to answer the purpose. The blade 11 may have a tail piece 20 disposed at right angle and provided with an opening to fit about the neck of the screw 21 to facilitate adjustment of its cutting edge relative to the subsole 12. The screws 19 and 21 shown in Fig. 1 with a neck and shoulder are preferable to ordinary screws which may be used instead if desired.

0bviously, by loosening the screw 16 and turning the head of the screw 19, the subsole 12 can be moved upwardly or downwardly bringing the blade 11 and the bow 13 with it when the screw 17 is used -to clamp these members together. If desired the stock is provided with reinforcements 10 in which holes or sockets 22 are formed to receive the guide rods 23 to a limited depth where they are clamped in position by means of suitable screws 24. The reinforcements 10 are also provided with bores 25 which extend through the side 6 wherein the rods 23 are adjustably held in position by means of suitable screws 26. The fence or guide 27 and the supplemental sole 28 are secured to the arms 29, which are provided with laterally bored knobs 30 adjustably mounted on the rods 23 and held in position by thumb screws 31. When the guide 27 is used, the rods 23 are slid into the sockets 22 to their limited position, the adjustment is made at the knobs 30 as shown in Fig. 2, whereas when the supplemental sole 28 is used, the rods 23 are slid through the bores 25 while remaining in their adjusted position at the knobs 30, thus bringing the supplemental sole 28 on an even plane with the sole 7 as shown in Fig. 3, obviously it will be seen that the guide 27 can easily be replaced to its former adjusted position by sliding the rods 23 back into the sockets 22.

The arms 29 may be rigidly secured to the guide 27 in the usual way. If desired, one of the arms 29 may be laxly connected to the guide 27 by a rivet or a bolt 3 head 32 indicated by a dotted line as shown in Fig. 3, the connection is loose enough to allow some freedom of motion of this arm 29 relative to the guide 27 and the supplemental sole 28 to overcome the binding effect of two sliding guide rods. This rivet or bolt head may be eliminated if desired, thus leaving one arm 29 unattached to the guide 27 but still held in position to brace the guide 27 for lateral pressure and also brace the supplemental sole 28 for downward pressure.

The rod 23 shown in Fig. 4 has a downturned portion as at 33 which may be rigidly secured to the guide 27 or supplemental sole 28 for holding the same in position, or it may be laxly connected to the guide 27 or supplemental sole 28, thus taking the place of a loosely connected arm 29 as already explained, or it may remain unattached and serve as a brace for the guide 27 and supplemental sole 28. The slidable collar 34- shown in Fig. 4 may be used as an adjustable shoulder on either style of the rods 23 to limit their position in the through bores formed in the knobs 30 or the bores 25.

lf desired the rods 23 may be provided with graduation as shown in Fig. 2 to indicate the lateral limit to which the blade may cut from the adjusted position of the guide 27 An adjustable spur 35 may be provided to cooperate with the guide 27 for the purpose of marking the width of the mortise for hinge plates and similar work, the spur 35 is provided with a slot through which the screw 36 extends to clamp the spur 35 to the side 6 in a guideway 37.

For expeditious replacement of the spur 35 to its former adjusted position, the side 6 of the stock is provided with a laterally disposed car 38 through which the screw 39 is slid to engage a tapped hole provided in the lug 413 as shown in Fig. 1. After the spur 35 has been adjusted to cut a gash with its point properly extended below the cutting edge of the blade 11 and clamped in position by the screw 36, the screw 39 is turned downward into the lug 40 until the head of the screw 39 rests on the ear 38, the spur 35 may then be moved upward to its neutral position while the screw 39 remains in its adjusted position in the lug 40 as shown in Fig. 1 where it will be seen that the spur 35 can quickly be replaced to its former adjusted position by loosening the screw 36 and sliding the spur 35 down until the head of the screw 39 again rests on the ear 38.

For the purpose of fining dadoes or routing when a wide sole surface is desired at both sides of the plane, a supplemental sole 41 is provided with upright flanges 42 in which holes are bored through which the screws 43 snugly extend and take into the side 6 of the stock to bring the supplemental sole 41 on an even plane with the sole 7, as shown inFig. 3.

Operation For mortising in hinge plates without the guide or spur, the mortises are first cut in shallow with a chisel, notches are then cut in at both ends of the mortise with a chisel as deep as the mortise will be, the mortise is then finished with the plane operated first in one direction then in the other, as illustrated in Fig. 1, which also shows one of the notches referred to.

When the guide 27 and spur 35 are used the rods 23 are inserted into the sockets 22 to their limited position,

the adjustment for the guide is made at the knobs 30, the point of the spur 35 is adjusted to extend below the cutting edge of the blade 11, the plane is then used as a butt gage similarly pressing the point of the spur 35 down, then pulling the plane backwards to cut a gash for the side of the mortise, the spur 35 is then moved up to its neutral position, notches are then cut as already explained, some of the wood may be taken out with a chisel or plowed out with the guide 27 still in position to assist in following a straight line, especially so when the spur 35 has not been provided, the guide 27 may then be disconnected from the stock by loosening the screws 24, thus the adjustment for the guide 27 is retained at the knobs 30 for a repeated operation, or the guide may be moved up to its neutral position by sliding the rods 23 through the bores 25, thus bringing the supplemental sole 28 up to its operative position on an even plane with the sole 7 of the stock to widen the sole surface and also retain the adjustment for the guide 27 at the knobs 3%, as shown in Fig. 3. When there is a rabbet or a rabbet strip in the door frame, the supplemental soles 23 and 41 are not used to finish the mortise.

For dadoes, the two supplemental soles 28 and 4-1 are attached to the stock as shown in Fig. 3, the cuts for the sides of the dado are made with a saw, some of the wood between these cuts is taken out with a chisel, the dado is then finished with the plane.

I claim:

1. In a plane of the character described comprising a stock having a sole with an opening formed therein, a restraining member having a bearing face at the lower end, a support at the rear of said opening for holding the restraining member at an inclined position, said restraining member being movably arranged to project below the sole through said opening, a plane-iron having a beveled cutting edge arranged immediately forward of the bearing face, and means for holding the bearing face and the cutting edge in adjusted position relatively to each other and the sole, whereby the'cutting edge may variably project below the bearing face.

2. In a plane as specified in claim 1 with the further provision that said means include two screws one to regulate the extent to which the cutting edge may project below the bearing face and the other to move the restraining member and the plane-iron together to a position below the sole.

References Cited in the file of this patent UNITED STATES PATENTS

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