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Publication numberUS3344825 A
Publication typeGrant
Publication dateOct 3, 1967
Filing dateOct 24, 1965
Priority dateOct 24, 1965
Publication numberUS 3344825 A, US 3344825A, US-A-3344825, US3344825 A, US3344825A
InventorsKvalheim Andrew M, Kvalheim Irwin S
Original AssigneeKvalheim Andrew M, Kvalheim Irwin S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Routing and planing apparatus
US 3344825 A
Abstract  available in
Images(4)
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Claims  available in
Description  (OCR text may contain errors)

Oct. 3, 1967 A. M. KVALHEIM ETAL 3,344,825

ROUTING AND PLANING APPARATUS Filed OCC. 24, 1965 4 Sheets-Sheet l TTORNEYS C- 3, 1957 A. M. KvALHz-:xM ETAL 3,344,825

ROUTING AND PLANING APPARATUS 4 Sheets-Sheet Filed Oct. 24, 1965 ATTORNEY5 UCL 3, 1967 v A. M. KVALHEIM ETA; 3,344,825

ROUTING AND PLANING APPARATUS v ATTORNEYS Oct. 3, 1967 A. M. KVALHEIM ETAI.

ROUTING AND PLANING APPARATUS 4 Sheets-Sheet 4 Filed .0011. 24, 1965 INVENTOR5 MrW/Z we Z @tf/a ATTORNEYS United States Patent O 3,344,825 RUTING AND PLANiN G APPARATUS Andrew M. Kvalheim and Irwin S. Kvalheim, both of 823-25 Petaluma Blvd. S., I.0. Box 77, Petaluma, Calif. 94952 Filed Oct. 24, 1965, Ser. No. 504,398 2o claims. (c1. 144-1) This invention relates to woodworking machinery and in particular to an apparatus for planin-g and .routing wood or similar material in a predetermined manner.

The inventi-on has particular utility in preparing doors and strike jambs for a hanging operation. In the construction of large buildings such as those designed for apartments or offices, it is usually necessary to hang hundreds of doors or more, all such doors and their door- Ways being of similar dimensions or, alternatively, several sets of doors and mating doorways need to Ibe prepared, each such set including a number of doors and doorways of similar dimensions. In a door hanging operation, it is of paramount importance that the door latch and the `lock receiving area of the strike jamb of the doorway mate perfectly when the door is hung. For the purpose of avoiding error, it is desirable that the door latch and door bolt receiving areas of a door and the lock receiving portion of a mating strike jamb, be prepared simultaneously. It is also desirable to provide an apparatus for this purpose having adjustable holding means thereon to hold doors and strike jambs of varying dimensions, said holding means being adapted to be set so that a plurality of doors and strike jambs of exactly the same dimensions may be prepared in a minimum amount of time. The present invention is directed to accomplishing these results.

Generally speaking, the invention comprises a frame structure, having two sets of adjustable clamp structures thereon, one set adapted to secure a door and the other set adapted to secure a strike jamb for the door, a planing assembly secured on the frame for properly sizing and bevelling the strike area of the door, and a routing assembly, also secured on the frame, having Imeans thereon permitting a routing operation in aV horizontal plane and in a vertical plane. The routing apparatus also includes support means for a standard router and a unique template assembly, both cooperating to permit routing to at least two and preferably three, predetermined depths. In the preferred embodiment of the invention, the routing apparatus is designed to hold the router in four distinct positions with respect to the door and strike jamb, or workpieces to be prepared. The iirst position secures the router so that the router bit will not touch either of the workpieces. This is to prevent accidental damage thereto. In the second position, the router is lowered so that the router bit will route the lock plate areas on the door and mating strike jamb. For this operation, base means are provided on the router for cooperating with the template assembly. In the third position, the router is lowered further so that the router bit will route the latch hole in the strike jamb, the latch bore in the edge of the door, and the lock cylinder bore in the face of the door. In the fourth position, the router and router bit are lowered again to complete .routing of the latch and lock cylinder bores in the door.

Therefore it is a primary object of this invention to provide a routing and planing apparatus including means t-o hold at least two workpieces, and a template assembly to guide the router.

It is another object of the invention to provide a woodworking apparatus of the above type having means thereon to permit routing to at least two and preferably three depths.

Yet another object of the invention is to provide a woodworking apparatus of the above type having means thereon securing a router in four distinct positions with respect to the workpieces.

Another object of the invention is to provide a woodworking apparatus of the above type havin-g two sets of adjustable clamp structures thereon for securing at least two workpieces as desired.

Finally, it is an object of the invention to provide a woodworking apparatus for preparing doors and mating strike jambs for a door hanging operation which is adapted to prepare large numbers of such doors and jambs in a minimum amount of time, and thus at minimum cost.

Further and more particular objects of the invention as well as explicit details of structure will be apparent by reference to the following drawings, in which:

FIG. 1 is an elevational, side View of the invention;

FIG. 2 is a top, plan view of the invention as shown in FIG. 1;

FIG. 3 is a plan view of the central portions of the invention as shown in FIG. 2 with parts removed for clarity and drawn to an enlarged scale;

FIG. 4 is a sectional view taken along lines 4 4 of FIG. 3;

FIG. 5 is a sectional view, similar to FIG. 4, but a mirror image thereof and drawn to an enlarged scale to show internal details of the invention;

FIG. 6 is an end View of the routing apparatus portion of the invention showing the same in vertical attitude;

FIG. 7 is a view similar to FIG. 3, .but with more parts removed for clarity and drawn to an enlarged scale;

FIGS. 8, 9, and 10 are sectional -views of the routing apparatus, illustrating the four distinct routing positions above described;

FIG. 11 is a partial view, in perspective, of the router base structure;

FIG. 12 is a sectional view taken along lines 12-12 of FIG. l, and drawn t-o an enlarged scale;

FIG. 13 is a partial perspective view showing the lock plate, latch bore, and lock cylinder bore portions of a door after a routing operation;

FIG. 14 is a partial rear elevational view of the invention showing the clamp means to hold the second worl piece, or strike jamb in position, and

FIG. 15 is a partial side elevational view of the planing apparatus of the invention showing details yof construction thereof.

Referring now to the drawings by reference character, and in particular to FIG. 1 thereof, the invention is shown comprising a frame structure 10, a planing assembly 12 and a routing apparatus 14. Frame 10 comprises a pair of supporting legs 16, 16, a fixed, horizontal box beam 13 secured on the support legs and means 20 for supporting a iirst workpiece, such as a door, on the frame lil. Means 20 includes a movable, horizontal, support bar 22 which supports a large dat workpiece such as a door on an outer edge thereof, a pair of vertical increment bars 24, 24 one on each supporting leg 16, an elongated base 26 having a vertical rail 2S thereon and a counterbalancing sash weight 3i) adapted for up and down movement on rail 23. Weight 30 and bar 22 are operatively connected by a pair of cables 32, 32 of equal length, arranged ovel suitable pulleys 34, each mounted on frame 10 adjacent the bottom edge of box beam 18. If desired, a pair of springs 36, 36 may be secured to the bottom of weight 30 and to base 26 to provide further resistance to downward movement of bar 22. With this construction, bar 22 may be guided'up or down, parallel with box beam 18, with a minimum amount of effort.

Each increment bar 24 is provided with a selectively positionable latch 38, mounted through support bar 22.

As shown in FIG. 12, latch 38 includes a roller 40 which rides on the rear vertical face of increment bar 24, an eccentrically mounted cylinder 42 and a handle 44 which serves to rotate cylinder 42 against bar 22 thus firmly pressing bar 22 against increment 'bar 24. Preferably, bar 22 is provided with a pair of stud plates 46 adjacent increment bars 24 for selective engagement with notches 48 in the face of each increment bar 24. In addition, bar 22 may be provided with plastic or felt covering 50 to prevent marring of the workpiece or door supported thereon.

The means for holding a second workpiece on the frame are best illustrated by FIGS. 2, 5, and 14. The second workpiece or door strike jamb is supported on a pair of brackets 52, 52 which are mounted one on each supporting leg 16, at the upper ends thereof, on therrear side of the invention as viewed in FIG. 1. The strike jamb is firmly held against the under-surface of routing apparatus 14 by means of another cylinder 54 mounted eccentrically on an elongated shaft 56. Shaft 56 is rotatably secured to box beam 18 by means of a first pair of mounting brackets 58, one on each side of cylinder 54, and a second pair of mounting brackets 60, one on each outer end of box beam 18. A pair of handles 62, 62 are provided on the outer terminal ends of shaft 56 for rotation thereof. As shown in FIG. 14 a torsion spring 64 secured to one bracket 58 and to a lock collar 66 on shaft 56 may be provided to urge eccentric cylinder 54 upwardly towards the routing apparatus 14. In FIGS. 1 and 2 are shown a pair of movable end stops 68, 68, which may be fixed along box beam 18 by means of positioning screws '70. Each stop `68 includes a hinged plate 72 abutting against the second workpiece or door strike jamb and a second pivoting plate 74 abutting against the lirst workpiece or door. If desired, plates 72 and 74 may be provided with Y an adjusting screw 76 threaded therethrough for 'close adjustment of the workpieces along frame 10. Again, all of the above members contacting the workpieces may be provided with felt or plastic covering to prevent damage to the workpieces.

Planing assembly 12 is shown by FIGS. 1, 2, and 15. The planing assembly includes a vertical support structure 78 having a shaft 80 rotata'bly secured thereon. A mounting plate 82 having a standard hand electric planer 84 therein is secured rigidly to shaft 80. A pair of springs 86, 86 are secured between the mounting plate 82 and vertical support 78, urging mounting plate 82 upwardly about the axis of shaft 80. A toggle clamp 88 is used to lower mounting plate 82 to place planer S4 in an operative position. In addition, an electric safety switch 96 is mounted on vertical support 78 serving to interrupt the ow of electric current to planer 84 when mounting plate 82 is moved out of operative position by releasing toggle clamp 88. Switch 90 is operated by a plunger 92 which is moved by contact of mounting plate 82 therewith.

The purpose of the planing assembly is to properly bevel the latch side edge of the door so that the door will fit properly with its strike jamb when hung. FIG. illustrates the structure used to determine the angle at which the door will be bevelled. A set plate 94 depends from and is hingedly connected to mounting plate 82 at 96. Plate 94 is provided with a slotted member 98 attached for vertical movement about pivot point 100 on said plate 94. Planer 84 is provided with a collar 182 having a clamp screw 104 thereon for selective engagement with slotted member 98. Said plate 94 is further provided with a pair of wheel brackets 106, 106 having horizontally disposed Wheels 108, 108 rotatably mounted thereon. The angle at which rotary teeth 110 of planer 84 strike the outer edge ofthe iirst workpiece or door is determined by the location of clamp screw 104 along slotted member 98. Once the setting is determined, mounting plate 82 and planer 84 are lowered to an operative position by toggle clamp 88 so that wheels 108 touch the outer face of the iirst be planed by turning on planer 84 and sliding the door therebeneath, along bar 22. The proper bevel angle, determined by the location of set screw 104 along slotted member 98, is assured by contact of wheels 108 with the outer face of the door as the door is moved beneath the planer.

Referring now to FIGS. 1 through 7, the details of construction of routing apparatus 14 will be discussed. The base structure of the routing apparatus includes a pair of brackets 112, 112, secured to box beam 18 by welding or other suitable means, and a vertical face plate 114 welded or otherwise suitably attached to the forward ends of brackets 112, 112, and depending therefrom. A pair of horizontally disposed templates 116 and 118 are mounted on top of box beam 18 to a pair of brackets 120, 120 located inwardly of brackets 112, 112. A third,

vertically disposed template 122 is mounted on vertical Y face plate 114. All three templates are Vadjustably mounted by'means of screws 124 through slots 126. Each brack-V et 112 may include a clamp 128 adjustably secured at which is -used to hold the second workpiece or door strike jamb firmly against box beam 18 (FIG. 6). Vertical face plate 114 is provided with a pair of lugs 132, 132, having screw clamps 134, 134 threadedly received therein for firmly holding the door or first workpiece against box beam 18. A pair of pivot blocks 136, 136 are mounted on the forward ends of 'brackets 112, 112. AV

generaily U-shaped router platform 138 is pivotally secured to blocks 136 by a pair of pins 141), 140. Platform 138 is adapted to lie within brackets 112 about templates 116 and 118 when in horizontal position and is further adapted to rotate 90 to a Vertical position as shown in FiG. 6. A sliding platform 142 is located centrally above platform 138 and is movable thereon by means of a plurality of horizontally disposed wheels 144, mounted on platform 138, mating with longitudinal tracks 146, 146 formed in each side of sliding platform 142, said tracks being of V-conguration in cross section. When router platform 138 is in a vertical position, downward movement of platform 142 is limited by a hydraulic cushion cylinder 148 cooperating with a strike bar 150, mounted at one end of sliding platform 142. Router platform 138 is further provided with a stop bar 152 (FIG. 3) which abuts against vertical plate 114 when router platform 138 is in a vertical position and prevents pivoting of platform 138 beyond a vertical attitude.

A router support 154 is secured to sliding platform 142 for limited rotational movement about a point formed by bolt v156. The router support includes a series of interior projections to support the router 158 at various vertical levels with respect to the plane of-sliding platform 142 in a manner and for purposes to be described below. As shown in FIG. 3, platform 142 is provided with an opening i160 to permit the router bit 1162 (FIG. 5) to pass therethrough and through the template therebeneath to route the workpiece. In addition, sliding platform 142 may be provided with a centering, tension spring 164 (FIG. 2) 'which limits sideways movement of router support 154 and urges the same to a center position Ias shown in FIG. 3 so as to prevent accidental contact of router bit 162 with any portion of the routing apparatus.

FIG. 11 illustrates the base 166 of router 158, which base is held within router support 154 during the routing operation. Base 166 includes a series of circumferentially spaced slots 168 which cooperate with the internal projections of router support 154 in a manner to be described below. A cylindrical template guide 170 depends from the central portion of base 166. Guide 170 also serves as a sleeve for internal concentric cylinder 172 secured to router 158 about router bit 162 (FIG. 5).

Referring now to FIGS. 8 through 10 in particular, the four-step routing operation will now be discussed. The internal projections of router support 154 include a first series of circumferentially spaced pins 174, a circumferentially spaced set of vertical studs 176, a second set of cir-l cumferentially spaced pins 180 and three internal base lugs 182 mounted on the bottom of router support 154. Router |158 is inserted into router support 154 by vertically aligning slot 168 of router base 166 with the upper set of pins 174. Downward movement of base 166 will be limited by studs .176, which are circumferentially displaced from pins 174. Once in place, base 166 is rotated about its center. In this position, slots 168 will be out of alignment with pins 174 as well as studs 176. In this position, router bit 162 will be maintained out of contact with the routing apparatus and the workpiece to be routed, as shown in FIG. 8. This defines the rst position of the router. The second position is shown in FIG. 9. To attain this position, router 158 is turned an additional 15, in the same direction Ias the first 15 rotation so that studs 176 will enter slots 168. Downward movement of base 166 will be limited by pins V180 which are vertically aligned with pins 174. Once base 166 rests upon pins 180, the router is rotated 15 in a direction opposite that of the iin-mediate prior rotational movement. Once this movement is completed, base 166 will be rmly in a second position; slots 16-8 are out of alignment with pins 189 and studs 176. In this position, router bit 162 is lowered suiiiciently to rout out the lock plate areas of the strike jamb or second workpiece and the lock plate area of the door or first workpiece. Movement of the router in a horizontal plane is limited by contact of cylindrical template guide 170 with Iupper side walls 1'84 of templates 116 and templates 118 (FIGS. 7 and 9). Movement of router 158 itself is permitted by sliding the platform 142 in and out by means of tracks 146 andwheels 144, and by horizontal rotation of router support 154 about bolt connection 156. Router y158 is provided with a pair of handles 186, 186 for moving the router as described above.

The third and fourth positions of the router apparatus are illustrated by FIG. 10. To place the router in the third position, base 166 is rotated 15 in the same direction as the immediate prior rotation so that slots 168 are aligned with pins 188. Base 166 may then be lowered to rest on lugs 1-82 in the base of router support 154. Base 166 is then rotated another 15, in either direction, so that slots 168 will be out of alignment with pins 180. In this third position, the latch hole in the strike jamb and a portion of the latch bore in the door are routed out. Horizontal planar movement of the router is limited by contact of cylinder guide 170 with the lower side walls 188 of templates 116 and 1l1'8. By manually moving platform 138 to a vertical position, a portion of the lock cylinder bore in the face of the door may also be routed out. Interior side wall 191) of template 122 limits movement of cylinder 170 to determine the dimensions of the routed area in the face of the door. Movement of router 158 is accomplished as discussed above.

The fourth position in the routing operation is accomplished by lowering the router 158, bit 162 and sleeve 172 within cylinder 17 0 lWhile the base .166 is in the third posi; tion. Referring to FIGS. 1 and 2, router 158 is mounted beneath a brace 192. Brace 192 is secured to pistons of a pair of hydraulic pressure cylinders 194, 194, which in turn are mounted on a cylindrical support 196, above base plate 166. Feed lines and an operating valve (not shown) are provided to actuate the cylinders 194, which may be fed by either air or uid under pressure. In this position, the remaining depth of the door latch bore and lock cylinder bore in the face of the door may be routed out. {Planar movement of the router is again determined by contact of cylinder guide 170 with walls 1588 and 190 of templates 118 `and 122, respectively, as cylinder guide 170 remains in the same position as in FIG. 3.

FIGURE 13 illustrates the routing operation on a door as outlined above. 202 indicates routing at the second position (FIG. 9), cylinder guide 170 cooperating with walls 1-84 of template 1118 (FIG. 7) to dene the routed area. In the third position (-FIG. l0) routing is completed. to the depth indicated by 204 on the door edge and to 296, on the door face. At the fourth position, complete routing of the latch cylinder bore and lock cylinder bore is indicated by lines 288 and 210, respectively. It would seem that the third and fourth routing positions ought to be completed as one and not two steps, but it has been found that by routing a small starter area, as in position three, and then completing the routing as in position four, less strain and load is placed on the router itself, thus prolonging the life of the router and the router bit. This is particularly true when routing workpieces of very hard. material.

The entire operation of the invention as applied to preparing a door and strike jamb for hanging, may now be outlined. First, bar 22 is clamped in position dependent upon the width of the door. Second, planar 84 is lowered by toggle clamp 88 and the door is passed therebeneath to properly bevel the same, the bevel angle having been determined by fastening clamp screw 164 in slotted member 98. Then the door and strike jamb are properly located and clamped in place as previously described for the routing operation.

Gradations 198 may be provided along one side of router platform 138 and a pointer 200 may be located on sliding platform 142 for indicating a center point for router 158 over templates 116, 11'8 and 1'22 prior to initiating routing, as illustrated in FIG. 3. This provision will negate any possibility of damage to the apparatus by the router, short of gross negligence by the operator of the invention.

It is apparent from the foregoing that we have invented a new and highly useful apparatus in the art of planing and routing machinery, and thus we are not to be limited to the exact construction as herein provided Y except as may be deemed to be within the scope of the following claims.

We claim:

1. An apparatus for routing a iirst and a second workpiece comprising a frame, first means for holding the first workpiece on the frame, second means for holding the second workpiece on the frame, a router platform for supporting a router, first template means for guiding the router in routing, substantially in a single plane the first and second workpieces, second template means for guiding the router in routing the rst workpiece in a plane substantially at right angles to said first routing, a router support on said router platform, a plurality of stops within said router support, and base guide means on said router for cooperating with said plurality or" stops and both said template means in a routing operation, said plurality of stops being arranged in at least two positions, vertically with respect to the surface of the wo-rkpiece being routed, for routing said workpieces to at least two depths.

2. The apparatus of claim 1v wherein said router platform comprises a pair of brackets, one on each side of said first template means, a pair of pivot blocks, one on each bracket, a generally U-shaped plate pivotally mounted said pivot blocks and partially surrounding said first template means, a sliding plate superimposed over said U-shaped plate, first .anti-friction means on the stem portions of said U-shaped plate, second anti-friction means on said sliding plate cooperating with said iirst anti-friction means, said router support being pivotally mounted on said sliding plate, means defining an opening in said sliding plate, beneath said router support, and a face plate secured to said brackets beneath said pivot blocks and depending at right angles therefrom, said second template means mounted on said face plate.

3. The apparatus of claim 2 wherein each of said brackets includes a clamp, mounted on an end remote from said pivot block, for clamping said second Work- Vpiece against said frame.

4. The apparatus of claim 2 wherein said face plate is provided with a pair of clamps for clamping said workpiece against said frame.

5. The apparatus of claim 2 wherein said U-shaped plate is selectively positionable in a first, horizontal plane, about said first template means and in a second, vertical plane wherein said central opening is positioned over said second template means, said U-shaped plate including a restricting bar, cooperating with said face plate to prevent rotation of said U-shaped plate beyond 90 about sai-d pivot blocks.

6. The apparatus of claim 5 wherein said U-shaped plate includes elastic support means cooperating with said sliding plate when said U-shaped plate is in a vertical planar position to absorb the weight of said sliding plate, router support and router.

7. The apparatus of claim 2 wherein said sliding plate includes limit means adjacent said central opening, cooperating with said router support to limit pivotal movement thereof.

8. The apparatus of claim 7 wherein said limit means includes spring means mounted on said sliding plate and urging said router support to a central position, over said central opening. I v9. The apparatus of claim 1 wherein said =first ternplate means comprises a pair of templates mounted 0n said frame, each of said pair of templates including a first step portion, cooperating with said base guide means in routing to a first depth, a second step portion, internally beneath said -first step portion, cooperating with said base guide means in routing to a second depth, and a plurality of slots about sai-d first step portion for adjustably securing Asaid each of said pair of templates laterally with respect to said frame.

10. The apparatus of claim 1 wherein said router support includes means defining a central circular opening therein, said ,plurality of stops arranged internally about said circular opening and comprising .a Ifirst set of angularly spaced pins near the top of said circular opening, a set of angularly spaced studs beneath said pins, said set of studs displaced uniformly angularly from said first set of pins in the plane of said circular opening, a second set of angularly spaced pins mounted substantially directly beneath said first set of pins and beneath said set of studs, and a set of angularly spaced lugs, mounted at the bottom of said circular opening, beneath said second set of pins.

11. The apparatus of claim 10 wherein said router base guide means comprises a generally circular platen having an external diameter less than the diameter of said central opening, means defining a plurality of angularly spaced slots in said platen, each of said slots 'being of sufficient dimensions to allow said platen to selectively pass said first set of pins, said studs, and said second set of pins, and a cylindrical guide depending concentrically from said circular platen and adapted to cooperate With said template means in a routing operation.

12. The apparatus of claim 1 wherein said router includes a cylindrical support, mounted on said base guide means, and means for moving said router downwardly, internally of said cylindrical support, comprising a horizontal bracket mounted on the top of said router, and a pair of fluid pressure devices, operatively connected between said bracket and said cylindrical support.

13; The apparatus of claim 1, wherein said first means `for holding the first workpiece on the frame comprises a vertically movable horizontal support bar, a pair of vertical increment bars on said frame, a pair of latches for selectively positioning said support bar on said increment bars, a vertically movable counterbalancing weight mounted on said frame and cable means connecting the side opposite that of said rst means for holding the first workpiece, a`cylinder eccentrically mounted on said shaft, centrally thereof, for camming said second workpiece upwardly against a portion of said first template means, handle means on each end of said shaft for rotation thereof and spring means secured to said shaft and said frame urging said cylinder towards said second workprece.

15. The apparatus of claim 1 wherein said frame is provided with a pair of end stops for selective abutment with both said workpieces, each of said end stops including adjusting means for incrementally locating said workpieces longitudinally with respect to said frame.

16. An apparatus Yfor planing and routing'a rst workpiece and for routing a second workpiece comprising a frame, first means for holding the first workpiece on the frame, second means for holding the second workpiece on the frame, a planer platform for supporting a planer, a

planer, a router platform for supporting a router, a router, rst template means for guiding the router in routing sub'- stantially in a single plane the first and second workpieces, second template means for guiding the router in routing the first workpiece in a plane substantially at right angles to said first routing, a router support on said router platform having an opening, a plurality of stops in the opening of saidrouter support, and base guide means on said router for cooperating with said plurality of stops and both said template means in a routing operation, said plurality of stops aligned in at least two planes to support said router in at least two positions, vertically Vwith respect to the surface of the workpiece being routed, for routing said workpieces to at least two depths.

17. The apparatus of claim 16 wherein said planer platform includes a vertical support secured on said frame a shaft, rotatably secured in said vertical support, a horizontal mounting plate for said planer attached to said shaft and extending outwardlyl therefrom, elastic means connecting said vertical base to said mounting plate, urging said mounting plate upwardly about the axis of said shaft, and a toggle clamp for moving said mounting plate and planer downwardly, against the urging of said elastic means, to a working position.

18. The planer platform of claim 17 wherein said mounting plate includes a vertical set plate, depending from said mounting plate and hingedly secured thereto, set means mounted on said set plate and said planer for selectively positioning said set plate angularly with respect to said mounting plate and `anti-friction means on said set plate, abutting said first workpiece when said planer is in a working position.

19. The planer platform of claim 17, wherein said set means comprises a pivot block mounted on said set plate, a slotted plate, pivotally secured in said pivot block, a collar, mounted on said planer, and a set screw through said slotted plate threadably received in said collar.

20. The planer platform of claim 17 wherein said vertical base is provided with a safety switch for interrupting power to said planer when said planer is moved to a non-working position, said switch including an operative plunger movable by contact of said mounting plate therewith.

References Cited UNITED STATES PATENTS 2,895,229 7/1959 Strickland 144-144 XR 3,263,723 8/1966 Sheffield 14d-27 XR 3,280,863 10/1966 Sturgis 144-2 XR 3,297,065 1/1967 Zenner 144-2 XR 3,313,327 4/1967 Goldstein 144-2 WILLIAM W. DYER, IR., Primary Examiner.

W. D. BRAY, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2895229 *Oct 3, 1955Jul 21, 1959Strickland Gordon EAdjustable door template
US3263723 *Jul 22, 1963Aug 2, 1966Norfield Mfg CoMachine and method for preparing a door and door frame for prehanging such door
US3280863 *Jan 3, 1964Oct 25, 1966Sturgis Leslie TRouting and drilling machine for door crafting
US3297065 *Jan 21, 1965Jan 10, 1967Zenner Walter JApparatus for fabricating door assemblies
US3313327 *Mar 7, 1966Apr 11, 1967Milton GoldsteinApparatus to work simultaneously on a door and its frame jambs
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4485857 *Jan 3, 1983Dec 4, 1984Norfield Manufacturing Co.For drilling a lock bore
US5146961 *Nov 15, 1990Sep 15, 1992Siegmund SchoellerApparatus for hinging a door to a door jamb
Classifications
U.S. Classification144/1.1, 144/27, 144/144.1, 144/2.1, 144/114.1, 408/103
International ClassificationB27F5/12, B27F5/00
Cooperative ClassificationB27F5/12
European ClassificationB27F5/12