US3286776A - Combination power hand tool - Google Patents

Combination power hand tool Download PDF

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US3286776A
US3286776A US377253A US37725364A US3286776A US 3286776 A US3286776 A US 3286776A US 377253 A US377253 A US 377253A US 37725364 A US37725364 A US 37725364A US 3286776 A US3286776 A US 3286776A
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shaft
support
cam wheel
gear housing
longitudinal
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US377253A
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Eugene M Richison
Ethel M Richison
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor

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  • This invention relates to a combination power hand tool adapted to perform separately a plurality of different operations.
  • the primary object of the invention is the provision of a more compact, better-balanced, more efficient, and more easily used tool of the kind indi-cated, wherein, in the successive ⁇ performance of several different operati-ons, it is not necessary lto detach the various working elements or accessories involved. ⁇
  • Another object of the invention is the provision of a tool of the character indicated above, whi-ch is'adapted to impart rotary motion to one or more of the accessories involved at any time, and reciprocating motion to the other accessories.
  • a further object of the invention is the provision, in a tool of the character indicated above, 'of simpler, more eflicient, and more easily operated manual clutch means for operatively connecting and disconnecting the different accessories.
  • FIGURE l is a contracted top plan view, partly broken away and in section, of a tool of the present invention, showing the clutch of one of two opposed rotary chuck shafts engaged, and the clutch of the third or reciprocating shaft disengaged, working elements being shown engaged in the chucks and secured to the reciprocating shaft;
  • FIGURE 2 is a contracted side elevation of the tool, partly broken away and in section;
  • FIGURE 3 is a transverse vertical section takenon the line 3 3 of FIGURE 2; j
  • FIGURE 4 is a transverse vertical section taken on the line 4-4 of FIGURE 2;
  • FIGURE 5 is an enlarged inner end elevation of a cam wheel, taken on the line 5-5 of FIGURE 2;
  • FIGURE 6 is an enlarged transverse vertical section taken on the line 6-6 of FIGURE 2;
  • FIGURE 7 is a perspective view of a hacksaw acces- SOry
  • FIGURE 8 is a perspective view of a reciprocating sander accessory.
  • FIGURE 9 is a perspective view of a buffer accessory.
  • the illustrated tool comprises a longitudinally elongated substantially cylindrical hollow casing 12, which, at its rear end is gradually reduced in diameter, as indicated at 14, to merge into a hollow, axial handle 16, having an enlarged annular knob 18, on its rear end.
  • the casing 12 has an open forward end 20, around which is an internal annular sh-oulder 22, providedwith circumferentially spaced threaded bores 24.
  • the casing 12 is formed with a pair of parallel spaced external ribs 26, which dene a relatively wide flat groove 28, in which is conned a side handle carrying band 30.
  • the band 30 is formed with a radial threaded bore 31 which receives an axial reduced diameter stud 32 on the inner end of a knob handle 34.
  • adjustment of the position of the handle 34, around the casing 12, suite-d to operations being performed, is readily obtained, merely by backing out the handle st-ud 32 and rotating the band, after which the stud 32 is tightened against the bottom of the groove 28 to hold the adjustment.
  • a spider 36 extends across 3,286,776 Patented Nov. 22, 1966 ice the rear end of the casing 12 and carries ⁇ a hub 38 which is formed with a blind bore 40, axial relative to the casing, in which is suitably secured a tubular rear motor shaft bearing 42.
  • a lubricant passage 44 leads to the bearing 42 from the exteriorrof the casing.
  • An electric motor shaft 46 has a rear end portion 48 engaged in the rear bearing 42, and extends forwardly through a forward bearing 48 which is suitably secured through the hub 50 of a removable disc web 52, which engages and closes the forward end 20 of the casing.
  • the shaft 46 carries a cooling fan 54 located at the rear side of the web 52.
  • the rear end of the casing 12 is formed with air inlet -openings 56, and the web 52 is formed with outlet openings 58, which lead from the rear side of the web to the rim of the web.
  • the motor shaft 46 has, adjacent to its rear end, a commutator 60, which i-s contacted by c-ommutator contacts 62, which are mounted on the sidewall 64 of the casing 12.
  • Rotor windings 66 are fixed to and surround the shaft 46, forwardly of thecommutator ⁇ 60, and these windings are in Vturn surrounded by eld windings 68, fixed lon the sidewall 64. ⁇
  • the forward bearing carrying web 52 is of the same outside diameter as the forward end 20 o-f the casing 12, and has, spaced from its perimeter, an annular flange 70, which seats in an annular groove 72, formed in the shoulder 22.
  • the web 52 has smooth bores 74 which register with the threaded bores 24 of the shoulder 22.
  • the forward side of the web 52 is formed with an annular ange 76, spaced inwardly, from the perimeter, which defines with the forward side of the web, a groove 78, in which seats the rear end of a rear gear hou-sing 80.
  • the sidewall 82 of rear gearhousing 80 has ⁇ a V-shaped extension 84 at the bottom thereof, and has a downwardly and forwardly angled upper part 86, to the forward ends of which are fixed a forward end wall 88.
  • the part -of the motor shaft 46 which extends forwardly across the rear gear housing is formed with worm threads 90, which are in mesh with an enlarged diameter speed-reducing worm wheel 92, located below the shaft 46, in the V-shaped extension 84 and fixed on a shaft 94.
  • the reducing gear shaft 94 is jofurrraled, at its rear end, .in a bearing 96, on the .forward side of the web 52, with :a ball bearing 98 ciroumposerl on the shaft l94 between the lbearing 96 and the rear side of the worrn wheel 92.
  • the worm wheel Shaft 94 is provided with a forwardly extending splined portion '100, which is non-rotatably engaged in a splined socket 102, formed in the rear end of a longitudinal gear shaft 104.
  • a tubular bearing 10:6 is suitably secured in a bore 108 formed through the forwand end wall ⁇ 80 of the rear gear housing 80 which receives the sh'aft 104.
  • a disc bearing l110 is interposed between the forward side of the worm. wheel 92 and the rear side of the w'all 88.
  • the longitudinal gear shaft 104 has its rear end engalged in the bearing 106, and extends forwardly therefrom part-way through a forward gear housing 112.
  • the forward gear housing is smaller in diameter than and is downwardly offset, relative to the top of the rear gear housing 80.
  • the rear gear housing 80 is formed with smooth bores 114, which register with the bores 74 of the web 52, and bolts 116 extend through these bores and are threaded into the threaded bores 24 of the casing 12, so as to assemble the web 'and the rear gear housing to the casing.
  • the lower part of the sidewall 1.18 of the forward gear housing 112 conforms in shape to the lower part of the sidewall of the rear gear housing 80, and has a top wall portion 120 ⁇ which is spaced .below the top of the rear gear housing 80 and slants downwardly and forwardly relative thereto, to join with a reduced diameter forward end wall 122.
  • the forward gear housing 112 has, on its rear end, a surrounding lateral fiange 124, which is se-cured to the forward end wall of the rear :gear housing 80, by means of screws 126.
  • the longitudinal gear shaft 104 adjacent to its forward end, extends through a tubular bearing 128, secured through the hub ⁇ 130 of .a fixed spider 132, ⁇ which extends across the interior of the forward gear housing 112, midway between the ends thereof.
  • the longitudinal shaft 104 has fixed thereon a bevel pinion 134, which is spaced rearwardly from the spider 132.
  • a rear cam wheel 136 On the forward end of the shaft 104 is fixed a rear cam wheel 136, which is formed, on its forward side, with four circumferentially spaced cams 138.
  • the rcam wheel 136 faces a forward cam wheel 140, having four cincumferentially spaced cams 142, on its rear side.
  • the forward cam wheel 140 is fixed on the rear end of a longitudinal 4reciprocating shaft 144 which extends 'slidably and forwardly through a bore 1416.
  • the bore 146 is formed through the forward end wall 122 of the forward -gear housing 112 and through an axial externally threaded extension or stud 148 on the end wall 122.
  • the forward end of the reciprocating shaft 144 is engaged in a socket 150 :in the rear end of a cylindrical accessory mounting head 152, which has a tapered forward end portion 154.
  • a cross pin 156 extends through the head 152 and the shaft 144.
  • the head 152 has a diametrioal slot 158 opening to its forward end, at whose rear end is a fixed diametrical pin 160.
  • the shaft 144 is designed to receive a fiat terminal 162, on the rear end of a reciprocating hole saw blade 164, which is locked in place, by means of a removable cross pin 165, extending through the head 152, and through a hole 166, provided in the terminal 162, and engagement of la notch 167, in the rear end of the terminal 162 with the fixed cross pin 160.
  • a hacksaw 168 shown in FIGURE 7, can be secured t-o the head 152.
  • the hiacksaw 168 comprises a substantially conventional inverted U-shaped frame 170, carrying a hacksaw blade 170, which is modified only to the extent that a rearward extension 172 is provided o-n the frame, which terminates in a terminal 162g, similar to the terminal 162 of the hole saw blade 164, :and adapted for reception in the slot 158 of the head 152.
  • the head 152 has, lon its rear end, 'a reduced diameter washer 174 which is normally spaced from the flat forward end of the stud 148.
  • the stud 148 has an external machine screw thread 178, on which is threaded a first actuation control device 180 having, on its rear end, 1an enlarged diameter annular handle 182, having a knurled rim 184.
  • a coil spring 186 Circumposed on the shaft 144, and compressed Ibetween the forward cam wheel 140, is a coil spring 186, which normally serves to bias the forward cam wheel 140 into engagement with the rear cam wheel 136, whereby forward and rearward reciprocation of the forward cam wheel shaft 144, accompanied by the saw blade 164, is produced, only when the actuation control device 180 is threaded rearwardly, as shown in IFIGURE 2, with the outer end of the actuation control device disengaged from the washer 174, and the .spring 186 lallowed to expand.
  • actuation control device 180 In order to disengage the cam. wheels, it is necessary to thread the actuation control device 180 forwardly on the extension 148, away from the end wall 122 of the forward gear housing 112, and forcibly against the portion 174 of the head, so as to compress ⁇ the spring 186 and move the shaft 144 and its cam wheel 140 forwardly relative to the rear cam wheel 136.
  • the actuation control device 180 is lockable, in its retracted position by means of a set screw 188 threaded therethrough and i iadapted to engage the bottom of the screw thread 178 of the stud 148.
  • Engageable with the bevel pinion 134 at different times, are similar bevel pinions on aligned, di'ametrically opposed clutched shaft assemblies, which are identical in construction, and are distinguished only b/y the letters L and 2R, refe-rring to their leftand right-hand locations.
  • Each of the assemblies L and R comprises a shaft 1190 which slides and rotates through the bore 192 which extends through the si-dewall 194 of the forward gear housing 1-12, behind the rear earn wheel 136, and through ia radial cylindrical extension or stud 196, on the sidewall 194, which is provided with an external machine screw thread 198.
  • the shaft 190 has a bevel pinion 200, fixed on its inner end, for engagement with the longitudinal bevel pinion 134, with a coil spring 202 interposed between the pinion 200 an-d the sidewall 194. Gn the outer end of the shaft 190 is suitably fixed a preferably gear-type chuck 204, which is normally spaced outwardly from the threaded extension 196.
  • a washer 206 is circumposed on the shaft 190 between the chuck 204 and the stud 196.
  • Second ⁇ and third actuation control devices 208 are each threaded on the extension 196 an-d each has, on its outer end, a disc type knurled handle 208.
  • the control device 208 is :adapted to be locked, in selected position, by means of a set screw 210.
  • control devices 208 of the assemblies L and R are 'adapted to be operated in the same manner as the control device of the reciprocating shaft assembly for engaging and disengaging their bevel pinions 200 with the longitudinal gear shaft pinion 134.
  • a circular saw l212 Shown chrucked in the chuck 204 of the right-hand assembly R, is a circular saw l212, which can be replaced by a buffer 214, shown in FIGURE 9, both having shafts 216, adapted to be engaged in the chuck 204.
  • FIGURE ⁇ 8 shows a reciprocating sander 220 comprising a sander pliate 222, having an offset longitudinal handle 224, which terminates in a flat terminal 16217, -simil'ar to the terminals of the hole saw blade 164 and the frame of ythe hacksaw 168, whereby the reciprocating sander 220 can be operatively secured to the head 152 on the reciprocating shaft 144.
  • a combination power hand tool comprising a handle support, a motor mounted on the support having ⁇ a motor shaft, a longitudinal shaft journaled on the -support and operatively-connected to the motor shaft, said longitudinal shaft having a bevel pinion fixed thereon and .a rear cam wheel, a reciprocating shaft slidably-journaled on the support and having a forward cam wheel facing the rear cam wheel, a first actuation control device movably-mounted on the support ⁇ and connected with the reciprocating shaft for engaging and disengaging the forward cam wheel with the -rear cam wheel, and la first radial shaft slidably journaled on the support, said first radial shaft having a bevel pinion adapted for engagement with the bevel pinion of the longitudinal shaft, a second actuation control device movably mounted on the support and connected with the radial shaft for engaging and disengaging its pinion with the pinion of the longitudinal shaft.
  • a first radial shaft is slid-ably journaled on the support, said first radial shaft having a bevel pinion adapted for engagement with the bevel pinion of the longitudinal shaft
  • second manual clutch means movably mounted on the support and connected with the radial shaft for engaging and disengaging its pinion with the pinion of the longitudinal shaft
  • said support comprising ⁇ a tubular case having an open forward end, a web secured against said forward end containing a forward bearing, said ca-se containing a rear bearing at its rear end, said motor shaft being journaled in said rear bearing ⁇ and extending forwardly through said forward bearing, a rear gear housing engaging the forward side of the web, the motor shaft pinion being located within said rear gear housing, a forward gear housing engaged with the forward end of the rear gear housing, said cam wheels being located within the forward gear housing, said forward gear housing having a forward end wall through which the reciprocating shaft slides and turns, said forward gear housing having a side wall through which the radial shaft slides and turns
  • a second radial shaft is aligned with the first radial shaft and slidably journaled on the support, said second radial shaft having a bevel pinion adapted for engagement with the bevel pinion of the longitudinal shaft, and a third actuation control device movably mounted on the support and connected to the second radial shaft for engaging and disengaging its bevel pinion with the bevel pinion of the longitudinal shaft.
  • A5. The combination of claim ⁇ 4 wherein said rst and second radial shafts have chucks fixed thereon, and different rotary accessories engaged in the chucks.
  • said first actuation control device comprises an externally threaded stud projecting radially from the support, spring means interposed between the forward cam wheel and the support, an accessory mounting head xed on the reciprocating shaft and adapted to be spaced outwardly from the stud, said first actuation member being threaded on the stud and adapted at different times to engage the head and be disengaged from the head,
  • said support comprises a tubular case terminating at its rear end in la longitudinal handle, a spider xed in the rear end of the case having an axial rear bearing, a web engaged with the forward end of the case having a forward axial bearing, said motor shaft being journaled at its rear end in the rear bearing and extending forwardly through the forward bearing, a rear gear housing engaged with the forward side of the web, the bevel pinion of the motor shaft being located within the rear gear housing, and a forward gear housing engaged with the forward end of the rear gear housing.
  • a support having a wall, an externally threaded stud on one side of the wall, said wall and said stud being formed with a bore axial to the stud, a shaft journaled through said bore and having an enlarged diameter member xed thereon at the side of the wall remote from the stud, spring means compressed between said member and said wall, said shaft having an -accessory mounting head thereon spaced from said stud, and a tubul-ar actuation control member threaded on the stud, said actuation control member being adapted to be rotated on the stud to engage said head and push the shaft in a direction to compress the spring means.

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Description

NOV- 22, 1966 E. M. RlcHlsoN ETAL. 3,286,775
COMBINATION POWER HAND TOOL NOV- 22, 1966 E. M. RlcHlsoN ETAL 3,286,776
COMBNATION POWER HAND TOOL 2 Sheets-Sheet 2 Filed June 23, 1964 iUnited States Patent C 3,286,776 COMBINATION POWER HAND TOOL Eugene M. Richison and Ethel M. Richison, Kinta, Okla., assignors of one-half to Kenneth Conklin and T. H. Conklin, jointly, both of Stigler, Okla.
Filed June 23, 1964, Ser. No. 377,253 17 Claims. (Cl. 173-48) This invention relates to a combination power hand tool adapted to perform separately a plurality of different operations. l j
The primary object of the invention is the provision of a more compact, better-balanced, more efficient, and more easily used tool of the kind indi-cated, wherein, in the successive `performance of several different operati-ons, it is not necessary lto detach the various working elements or accessories involved.`
Another object of the invention is the provision of a tool of the character indicated above, whi-ch is'adapted to impart rotary motion to one or more of the accessories involved at any time, and reciprocating motion to the other accessories. l
A further object of the invention is the provision, in a tool of the character indicated above, 'of simpler, more eflicient, and more easily operated manual clutch means for operatively connecting and disconnecting the different accessories.
In the drawings:
FIGURE l is a contracted top plan view, partly broken away and in section, of a tool of the present invention, showing the clutch of one of two opposed rotary chuck shafts engaged, and the clutch of the third or reciprocating shaft disengaged, working elements being shown engaged in the chucks and secured to the reciprocating shaft;
FIGURE 2 is a contracted side elevation of the tool, partly broken away and in section;
FIGURE 3 is a transverse vertical section takenon the line 3 3 of FIGURE 2; j
FIGURE 4 is a transverse vertical section taken on the line 4-4 of FIGURE 2;
I FIGURE 5 is an enlarged inner end elevation of a cam wheel, taken on the line 5-5 of FIGURE 2;
` FIGURE 6 is an enlarged transverse vertical section taken on the line 6-6 of FIGURE 2;
FIGURE 7 is a perspective view of a hacksaw acces- SOry;
FIGURE 8 `is a perspective view of a reciprocating sander accessory; and,
FIGURE 9 is a perspective view of a buffer accessory.
Referring in detail to the drawings, and iirst to FIG- URES l t-o 6 thereof, the illustrated tool comprises a longitudinally elongated substantially cylindrical hollow casing 12, which, at its rear end is gradually reduced in diameter, as indicated at 14, to merge into a hollow, axial handle 16, having an enlarged annular knob 18, on its rear end. The casing 12 has an open forward end 20, around which is an internal annular sh-oulder 22, providedwith circumferentially spaced threaded bores 24.
'Adjacent to the rear end 20, the casing 12 is formed with a pair of parallel spaced external ribs 26, which dene a relatively wide flat groove 28, in which is conned a side handle carrying band 30. The band 30 is formed with a radial threaded bore 31 which receives an axial reduced diameter stud 32 on the inner end of a knob handle 34. As indicated by arrows in FIGURE 3, adjustment of the position of the handle 34, around the casing 12, suite-d to operations being performed, is readily obtained, merely by backing out the handle st-ud 32 and rotating the band, after which the stud 32 is tightened against the bottom of the groove 28 to hold the adjustment.
As shown in FIGURE 1, a spider 36 extends across 3,286,776 Patented Nov. 22, 1966 ice the rear end of the casing 12 and carries `a hub 38 which is formed with a blind bore 40, axial relative to the casing, in which is suitably secured a tubular rear motor shaft bearing 42. A lubricant passage 44 leads to the bearing 42 from the exteriorrof the casing.
An electric motor shaft 46 has a rear end portion 48 engaged in the rear bearing 42, and extends forwardly through a forward bearing 48 which is suitably secured through the hub 50 of a removable disc web 52, which engages and closes the forward end 20 of the casing. The shaft 46 carries a cooling fan 54 located at the rear side of the web 52. The rear end of the casing 12 is formed with air inlet -openings 56, and the web 52 is formed with outlet openings 58, which lead from the rear side of the web to the rim of the web.
The motor shaft 46 has, adjacent to its rear end, a commutator 60, which i-s contacted by c-ommutator contacts 62, which are mounted on the sidewall 64 of the casing 12. Rotor windings 66 are fixed to and surround the shaft 46, forwardly of thecommutator `60, and these windings are in Vturn surrounded by eld windings 68, fixed lon the sidewall 64.`
As shown in FIGURE 2, the forward bearing carrying web 52 is of the same outside diameter as the forward end 20 o-f the casing 12, and has, spaced from its perimeter, an annular flange 70, which seats in an annular groove 72, formed in the shoulder 22. The web 52 has smooth bores 74 which register with the threaded bores 24 of the shoulder 22. The forward side of the web 52 is formed with an annular ange 76, spaced inwardly, from the perimeter, which defines with the forward side of the web, a groove 78, in which seats the rear end of a rear gear hou-sing 80. As indicated in FIGURES 1, 2, and 4, the sidewall 82 of rear gearhousing 80 has `a V-shaped extension 84 at the bottom thereof, and has a downwardly and forwardly angled upper part 86, to the forward ends of which are fixed a forward end wall 88.
The part -of the motor shaft 46 which extends forwardly across the rear gear housing is formed with worm threads 90, which are in mesh with an enlarged diameter speed-reducing worm wheel 92, located below the shaft 46, in the V-shaped extension 84 and fixed on a shaft 94.
As shown in FIGURE 2, the reducing gear shaft 94 is jofurrraled, at its rear end, .in a bearing 96, on the .forward side of the web 52, with :a ball bearing 98 ciroumposerl on the shaft l94 between the lbearing 96 and the rear side of the worrn wheel 92. The worm wheel Shaft 94 is provided with a forwardly extending splined portion '100, which is non-rotatably engaged in a splined socket 102, formed in the rear end of a longitudinal gear shaft 104. A tubular bearing 10:6 is suitably secured in a bore 108 formed through the forwand end wall `80 of the rear gear housing 80 which receives the sh'aft 104. A disc bearing l110 is interposed between the forward side of the worm. wheel 92 and the rear side of the w'all 88.
The longitudinal gear shaft 104 has its rear end engalged in the bearing 106, and extends forwardly therefrom part-way through a forward gear housing 112. The forward gear housing is smaller in diameter than and is downwardly offset, relative to the top of the rear gear housing 80. The rear gear housing 80 is formed with smooth bores 114, which register with the bores 74 of the web 52, and bolts 116 extend through these bores and are threaded into the threaded bores 24 of the casing 12, so as to assemble the web 'and the rear gear housing to the casing.
The lower part of the sidewall 1.18 of the forward gear housing 112 conforms in shape to the lower part of the sidewall of the rear gear housing 80, and has a top wall portion 120` which is spaced .below the top of the rear gear housing 80 and slants downwardly and forwardly relative thereto, to join with a reduced diameter forward end wall 122.
The forward gear housing 112 has, on its rear end, a surrounding lateral fiange 124, which is se-cured to the forward end wall of the rear :gear housing 80, by means of screws 126.
The longitudinal gear shaft 104, adjacent to its forward end, extends through a tubular bearing 128, secured through the hub `130 of .a fixed spider 132, `which extends across the interior of the forward gear housing 112, midway between the ends thereof.
Within the rear gear housing 80 the longitudinal shaft 104 has fixed thereon a bevel pinion 134, which is spaced rearwardly from the spider 132. On the forward end of the shaft 104 is fixed a rear cam wheel 136, which is formed, on its forward side, with four circumferentially spaced cams 138. The rcam wheel 136 faces a forward cam wheel 140, having four cincumferentially spaced cams 142, on its rear side.
The forward cam wheel 140 is fixed on the rear end of a longitudinal 4reciprocating shaft 144 which extends 'slidably and forwardly through a bore 1416. The bore 146 is formed through the forward end wall 122 of the forward -gear housing 112 and through an axial externally threaded extension or stud 148 on the end wall 122. The forward end of the reciprocating shaft 144 is engaged in a socket 150 :in the rear end of a cylindrical accessory mounting head 152, which has a tapered forward end portion 154. A cross pin 156 extends through the head 152 and the shaft 144.
The head 152 has a diametrioal slot 158 opening to its forward end, at whose rear end is a fixed diametrical pin 160. The shaft 144 is designed to receive a fiat terminal 162, on the rear end of a reciprocating hole saw blade 164, which is locked in place, by means of a removable cross pin 165, extending through the head 152, and through a hole 166, provided in the terminal 162, and engagement of la notch 167, in the rear end of the terminal 162 with the fixed cross pin 160.
Alternately a hacksaw 168, shown in FIGURE 7, can be secured t-o the head 152. The hiacksaw 168 comprises a substantially conventional inverted U-shaped frame 170, carrying a hacksaw blade 170, which is modified only to the extent that a rearward extension 172 is provided o-n the frame, which terminates in a terminal 162g, similar to the terminal 162 of the hole saw blade 164, :and adapted for reception in the slot 158 of the head 152.
The head 152 has, lon its rear end, 'a reduced diameter washer 174 which is normally spaced from the flat forward end of the stud 148. The stud 148 has an external machine screw thread 178, on which is threaded a first actuation control device 180 having, on its rear end, 1an enlarged diameter annular handle 182, having a knurled rim 184. Circumposed on the shaft 144, and compressed Ibetween the forward cam wheel 140, is a coil spring 186, which normally serves to bias the forward cam wheel 140 into engagement with the rear cam wheel 136, whereby forward and rearward reciprocation of the forward cam wheel shaft 144, accompanied by the saw blade 164, is produced, only when the actuation control device 180 is threaded rearwardly, as shown in IFIGURE 2, with the outer end of the actuation control device disengaged from the washer 174, and the .spring 186 lallowed to expand.
In order to disengage the cam. wheels, it is necessary to thread the actuation control device 180 forwardly on the extension 148, away from the end wall 122 of the forward gear housing 112, and forcibly against the portion 174 of the head, so as to compress `the spring 186 and move the shaft 144 and its cam wheel 140 forwardly relative to the rear cam wheel 136. The actuation control device 180 is lockable, in its retracted position by means of a set screw 188 threaded therethrough and i iadapted to engage the bottom of the screw thread 178 of the stud 148.
Engageable with the bevel pinion 134, at different times, are similar bevel pinions on aligned, di'ametrically opposed clutched shaft assemblies, which are identical in construction, and are distinguished only b/y the letters L and 2R, refe-rring to their leftand right-hand locations.
Each of the assemblies L and R comprises a shaft 1190 which slides and rotates through the bore 192 which extends through the si-dewall 194 of the forward gear housing 1-12, behind the rear earn wheel 136, and through ia radial cylindrical extension or stud 196, on the sidewall 194, which is provided with an external machine screw thread 198. The shaft 190 has a bevel pinion 200, fixed on its inner end, for engagement with the longitudinal bevel pinion 134, with a coil spring 202 interposed between the pinion 200 an-d the sidewall 194. Gn the outer end of the shaft 190 is suitably fixed a preferably gear-type chuck 204, which is normally spaced outwardly from the threaded extension 196. A washer 206 is circumposed on the shaft 190 between the chuck 204 and the stud 196.
Second `and third actuation control devices 208 are each threaded on the extension 196 an-d each has, on its outer end, a disc type knurled handle 208. The control device 208 is :adapted to be locked, in selected position, by means of a set screw 210.
The control devices 208 of the assemblies L and R are 'adapted to be operated in the same manner as the control device of the reciprocating shaft assembly for engaging and disengaging their bevel pinions 200 with the longitudinal gear shaft pinion 134.
Shown chrucked in the chuck 204 of the right-hand assembly R, is a circular saw l212, which can be replaced by a buffer 214, shown in FIGURE 9, both having shafts 216, adapted to be engaged in the chuck 204.
Chucked in the left chuck of the left-hand assembly L, is la drill bit 218, which can be replaced by any other desired accessory having a shaft.
FIGURE `8 shows a reciprocating sander 220 comprising a sander pliate 222, having an offset longitudinal handle 224, which terminates in a flat terminal 16217, -simil'ar to the terminals of the hole saw blade 164 and the frame of ythe hacksaw 168, whereby the reciprocating sander 220 can be operatively secured to the head 152 on the reciprocating shaft 144.
What is claimed is:
1. A combination power hand tool comprising a handle support, a motor mounted on the support having `a motor shaft, a longitudinal shaft journaled on the -support and operatively-connected to the motor shaft, said longitudinal shaft having a bevel pinion fixed thereon and .a rear cam wheel, a reciprocating shaft slidably-journaled on the support and having a forward cam wheel facing the rear cam wheel, a first actuation control device movably-mounted on the support `and connected with the reciprocating shaft for engaging and disengaging the forward cam wheel with the -rear cam wheel, and la first radial shaft slidably journaled on the support, said first radial shaft having a bevel pinion adapted for engagement with the bevel pinion of the longitudinal shaft, a second actuation control device movably mounted on the support and connected with the radial shaft for engaging and disengaging its pinion with the pinion of the longitudinal shaft.
2. The combination of claim 1, wherein said support comprises a tubular case terminating at its rear end in a longitudinal handle.
3. The combination of claim 1, wherein a first radial shaft is slid-ably journaled on the support, said first radial shaft having a bevel pinion adapted for engagement with the bevel pinion of the longitudinal shaft, second manual clutch means movably mounted on the support and connected with the radial shaft for engaging and disengaging its pinion with the pinion of the longitudinal shaft, said support comprising `a tubular case having an open forward end, a web secured against said forward end containing a forward bearing, said ca-se containing a rear bearing at its rear end, said motor shaft being journaled in said rear bearing `and extending forwardly through said forward bearing, a rear gear housing engaging the forward side of the web, the motor shaft pinion being located within said rear gear housing, a forward gear housing engaged with the forward end of the rear gear housing, said cam wheels being located within the forward gear housing, said forward gear housing having a forward end wall through which the reciprocating shaft slides and turns, said forward gear housing having a side wall through which the radial shaft slides and turns.
4. The combination of claim 1 wherein a second radial shaft is aligned with the first radial shaft and slidably journaled on the support, said second radial shaft having a bevel pinion adapted for engagement with the bevel pinion of the longitudinal shaft, and a third actuation control device movably mounted on the support and connected to the second radial shaft for engaging and disengaging its bevel pinion with the bevel pinion of the longitudinal shaft.
A5. The combination of claim `4 wherein said rst and second radial shafts have chucks fixed thereon, and different rotary accessories engaged in the chucks.
r6. The combination of claim 1, wherein said first actuation control device comprises an externally threaded stud projecting radially from the support, spring means interposed between the forward cam wheel and the support, an accessory mounting head xed on the reciprocating shaft and adapted to be spaced outwardly from the stud, said first actuation member being threaded on the stud and adapted at different times to engage the head and be disengaged from the head,
7. The combination of claim 6 wherein said head has a diametrical slot opening to its outer end, and a reciprocating accessory having a flat terminal engageable in the slot, and means for locking the terminal in the slot.
8. The combination of claim 7 wherein said accessory is a 4hole saw.
9. The combination of claim 7 wherein said accessory is a hacksaw having a frame, a rearward extention on the frame having a flat terminal adapted to be engaged in the slot.
10. The combination of claim 1 wherein said rst radial shaft has a chuck fixed thereon, and a rotary accessory engaged in said chuck.
11. The combination of claim 10 wherein said accessory is a drill bit.
12. The combination of claim 10 wherein said accessory is 4a rotary saw.
13. The combination of claim 10 wherein said accessory is a rotary butter.
14. The combination of claim 1, wherein said support comprises a tubular case terminating at its rear end in la longitudinal handle, a spider xed in the rear end of the case having an axial rear bearing, a web engaged with the forward end of the case having a forward axial bearing, said motor shaft being journaled at its rear end in the rear bearing and extending forwardly through the forward bearing, a rear gear housing engaged with the forward side of the web, the bevel pinion of the motor shaft being located within the rear gear housing, and a forward gear housing engaged with the forward end of the rear gear housing.
15. The combination of claim 14 wherein said cam wheels are located within the forward gear housing, said forward gear housing having a forward end wall through which the reciprocating shaft slides and turns.
16. In combination, a support having a wall, an externally threaded stud on one side of the wall, said wall and said stud being formed with a bore axial to the stud, a shaft journaled through said bore and having an enlarged diameter member xed thereon at the side of the wall remote from the stud, spring means compressed between said member and said wall, said shaft having an -accessory mounting head thereon spaced from said stud, and a tubul-ar actuation control member threaded on the stud, said actuation control member being adapted to be rotated on the stud to engage said head and push the shaft in a direction to compress the spring means.
17. The combination of claim 16, wherein a relatively stationary shaft is journaled on the support and carries a second enlarged diameter member thereon opposed to the iirst mentioned enlarged diameter member, said .actuation control member being normally positionedon the stud out of contact with said head so as to relax the spring means to bias the iirst mentioned member into operative contact with said second member.
References Cited by the Examiner UNITED STATES PATENTS 813,396 2/ 1906 Anker-Holth 192--95 2,303,565 12/ 1942 Luna 77-7 2,520,875 8/1950 Birchmeier 144-1.7 2,526,976 10/ 1950 Smith 77-7 2,555,593 6/1951 Lee 192-95 2,858,703 11/1958 Willcox 144-35.1 2,942,852 6/'1960 Muthmann 173-123 3,003,165 10/ 1961 Charlet 77-25 FRED C. MATTE'RN, I R., Primary Examiner.
L. P. KESSLER, Assistant Examiner.

Claims (1)

1. A COMBINATION POWER HAND TOOL COMPRISING A HANDLE SUPPORT, A MOTOR MOUNTED ON THE SUPPORT HAVING A MOTOR SHAFT, A LONGITUDINAL SHAFT JOURNALED ON THE SUPPORT AND OPERATIVELY-CONNECTED TO THE MOTOR SHAFT, SAID LONGITUDINAL SHAFT HAVING A BEVEL PINION FIXED THEREON AND A REAR CAM WHEEL, A RECIPROCATING SHAFT SLIDABLY-JOURNALED ON THE SUPPORT AND HAVING A FORWARD CAM WHEEL FACING THE REAR CAM WHEEL, A FIRST ACTUATION CONTROL DEVICE MOVABLY-MOUNTED ON THE SUPPORT AND CONNECTED WITH THE RECIPROCATING SHAFT FOR ENGAGING SAID DISENGAGING THE FOWARD CAM WHEEL WITH THE REAR CAM WHEEL, AND A FIRST RADIAL SHAFT SLIDABLY JOURNALED ON THE SUPPORT, SAID FIRST RADIAL SHAFT HAVING A BEVEL PINION ADAPTED FOR ENGAGEMENT WITH THE BEVEL PINION OF THE LONGITUDINAL SHAFT, A SECOND ACTUATION CONTROL DEVICE MOVABLY MOUNTED ON THE SUPPORT AND CONNECTED WITH THE RADIAL SHAFT FOR ENGAGING AND DISENGAGING ITS PINION WITH THE PINION OF THE LONGITUDINAL SHAFT.
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US3645229A (en) * 1970-08-13 1972-02-29 Ibm Rotational mechanism
DE2136523A1 (en) * 1971-07-21 1973-02-01 Hilti Ag ELECTRIC DRILL
US3783955A (en) * 1971-04-21 1974-01-08 Gkn Screws Fasteners Ltd Power tool
US4487270A (en) * 1981-11-24 1984-12-11 Black & Decker Inc. Electric tool, particularly a handtool, with torque control
EP0143137A1 (en) * 1983-11-24 1985-06-05 Jòzsef Balogh Hand-held apparatus for body care
WO1991012116A1 (en) * 1990-02-13 1991-08-22 Kiefer Klaus Juergen Hand-held machine tool
US5511912A (en) * 1994-09-19 1996-04-30 Ellerbrock; Brian E. Hand tool attachment
WO1997007919A1 (en) * 1995-08-31 1997-03-06 Iradj Hessabi Sawing, cutting or separating device
DE19619428A1 (en) * 1996-05-14 1997-11-27 Eduard Gasinski Drilling machine and fret-saw
US20040226731A1 (en) * 2002-02-08 2004-11-18 Heinz-Werner Faatz Drilling and/or hammering tool
WO2006054141A1 (en) * 2004-11-17 2006-05-26 Dino Sodini Device for correcting damaged vehicle body sheets
DE102007023807A1 (en) * 2007-05-21 2008-11-27 Robert Bosch Gmbh Screwing device for use in mechanical adjusting device, has effective connection produced during actuation between outer side and drive or inner side and drive, where drive force of drive is transferred to outer side or inner side
DE102004006772B4 (en) * 2003-02-11 2010-12-02 Benedikt Alber Wrench
US8209830B1 (en) * 2009-03-24 2012-07-03 Crespo Rusbel T Dual drill and anchoring device
US20150014013A1 (en) * 2011-12-23 2015-01-15 Robert Bosch Gmbh Electrically Operable Machine Tool

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US2303565A (en) * 1941-05-16 1942-12-01 Essick Machinery Company Power tool
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Cited By (23)

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Publication number Priority date Publication date Assignee Title
US3645229A (en) * 1970-08-13 1972-02-29 Ibm Rotational mechanism
US3783955A (en) * 1971-04-21 1974-01-08 Gkn Screws Fasteners Ltd Power tool
DE2136523A1 (en) * 1971-07-21 1973-02-01 Hilti Ag ELECTRIC DRILL
US4487270A (en) * 1981-11-24 1984-12-11 Black & Decker Inc. Electric tool, particularly a handtool, with torque control
EP0143137A1 (en) * 1983-11-24 1985-06-05 Jòzsef Balogh Hand-held apparatus for body care
WO1991012116A1 (en) * 1990-02-13 1991-08-22 Kiefer Klaus Juergen Hand-held machine tool
US5511912A (en) * 1994-09-19 1996-04-30 Ellerbrock; Brian E. Hand tool attachment
WO1997007919A1 (en) * 1995-08-31 1997-03-06 Iradj Hessabi Sawing, cutting or separating device
DE19630763B4 (en) * 1996-05-14 2005-12-08 Eduard Gasinski One with two functions
DE19619428A1 (en) * 1996-05-14 1997-11-27 Eduard Gasinski Drilling machine and fret-saw
DE19630763A1 (en) * 1996-05-14 1998-02-12 Eduard Gasinski Dual-function machine i.e. angle-grinder and drill
DE19619428B4 (en) * 1996-05-14 2005-11-10 Eduard Gasinski Hand-operated combination machine tool with drill and jigsaw function
US20040226731A1 (en) * 2002-02-08 2004-11-18 Heinz-Werner Faatz Drilling and/or hammering tool
US7308950B2 (en) * 2002-02-08 2007-12-18 Black & Decker Inc. Drilling and/or hammering tool
DE102004006772B4 (en) * 2003-02-11 2010-12-02 Benedikt Alber Wrench
WO2006054141A1 (en) * 2004-11-17 2006-05-26 Dino Sodini Device for correcting damaged vehicle body sheets
US20080093587A1 (en) * 2004-11-17 2008-04-24 Dino Sodini Device for Correting Damaged Vehicle Body Sheets
US7856862B2 (en) 2004-11-17 2010-12-28 Dino Sodini Device for correcting damaged vehicle body sheets
DE102007023807A1 (en) * 2007-05-21 2008-11-27 Robert Bosch Gmbh Screwing device for use in mechanical adjusting device, has effective connection produced during actuation between outer side and drive or inner side and drive, where drive force of drive is transferred to outer side or inner side
ES2358709A1 (en) * 2007-05-21 2011-05-13 Robert Bosch Gmbh Screwing device for use in mechanical adjusting device, has effective connection produced during actuation between outer side and drive or inner side and drive, where drive force of drive is transferred to outer side or inner side
DE102007023807B4 (en) * 2007-05-21 2016-02-25 Robert Bosch Gmbh Switching means for screwdrivers with two drives
US8209830B1 (en) * 2009-03-24 2012-07-03 Crespo Rusbel T Dual drill and anchoring device
US20150014013A1 (en) * 2011-12-23 2015-01-15 Robert Bosch Gmbh Electrically Operable Machine Tool

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