US2858703A - Power-driven hand unit for rotary and reciprocating tools - Google Patents
Power-driven hand unit for rotary and reciprocating tools Download PDFInfo
- Publication number
- US2858703A US2858703A US518808A US51880855A US2858703A US 2858703 A US2858703 A US 2858703A US 518808 A US518808 A US 518808A US 51880855 A US51880855 A US 51880855A US 2858703 A US2858703 A US 2858703A
- Authority
- US
- United States
- Prior art keywords
- rotary
- reciprocating
- power
- shaft
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000033001 locomotion Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/12—Means for driving the impulse member comprising a crank mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D67/00—Filing or rasping machines or devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/34—Combined cutting means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18208—Crank, pitman, and slide
Definitions
- the invention aims to provide a power driven hand tool suitable for driving bits, saws, files and similar implements to perform a wide variety of cutting and shaping operations in metal, plastic or the like, by imparting either rotary or reciprocating motion to an implement, or simultaneously providing both rotary and reciprocating motions.
- the basic unit includes two chucks or implement holders, one providing a rotary motion output and the other a reciprocating motion output, and such that the working stroke of the reciprocating output can be adjusted smoothly and continuously over its entire range of strokes.
- the invention further provides a compact multi-purpose tool of the above kindwhich uses only a single motor to obtain both kinds of motions, and in which certain parts of the linkage or connections between the motor and the output devices (chuck or chucks) are common to both kinds of motive outputs.
- a compact multi-purpose tool of the above kind which uses only a single motor to obtain both kinds of motions, and in which certain parts of the linkage or connections between the motor and the output devices (chuck or chucks) are common to both kinds of motive outputs.
- a unit according to the invention permits such diverse operations as drilling, rotary grinding, reciprocating grinding, rotary and reciprocating filing, and rotary and reciprocating sawing, as well as other special operations that will be apparent to the skilled user of the device.
- Fig. l is a side elevation of a preferred form of the invention, in which separate tool holders are provided for rotary and reciprocating motions, one being substantially axial with the casing and the other having an axis displaced to one side of the casing.
- Fig. 2 is a diagrammatic view partly in perspective of the internal parts of the invention.
- Fig. 3 is a fragmentary perspective exploded view, partly in section, the section being taken on line 33 of Fig. 2.
- the major body of the device comprises a casing containing a rotary motor, whose shaft drives directly a chuck or tool holder 12 which therefore undergoes rotation only.
- Casing 10 includes brush holders (one indicated at 14), ventilating slots 16 and end covers 18 and 20.
- Cover 18 adjacent chuck 12 is preferably knurled as at 22 for a convenient hand grip.
- the axis of rotation of chuck 12 will desirably lie along the central axis of the motor.
- a separate drive transmission imparts reciprocative motion to a second tool holder 24 extending out from the opposite end cover 20 of the motor casing,
- the axis of this holder may lie displaced from, the motor axis adjacent the outer wall of the main casing 10.
- the general layout of parts is indicated schematically in Fig. 2, 26 designating the motor armature rotating in the field structure 28, the electrical circuit including a; speed control rheostat 30.
- the motor shaft 32 carries, a worm 34 meshing with a worm wheel 36 coupled to a wheelv 38.
- Wheels 36 and 38 may actually be made of a single piece, or they may be connected by a shaft such as- 40.
- eccentrically pivoted to wheel 38 is the link 42 pivoted to. the reciprocating shaft 44 which leads outside the casing to the tool holder 24, the parts within the casing being indicated as within the dashed casing outline 10. Suitable bearings and guides, carried by the casing, are provided for both shafts.
- wheel 38 In order to control the stroke length of tool holder 24, it is only necessary to vary the effective radius at which link 42 is connected to wheel 38. This could be accomplished by providing a series of pivot holes in the wheel 38 at difierent radii, but a continuous variation of effective radius can be achieved by the means shown in Fig. 3.
- wheel 38 carries a pin 46 which is olfcenter with respect to the wheel. Journalled on this pin is an eccentric collar 48, so that the angular position of pin 46 and collar 48 determines the degree of eccentricity, with respect to the axis of wheel 38, of the outer cylindrical surface of collar 48.
- the casing 10 (Fig. 1) may be provided with an access hole to screw 50, and a suitable cover 56.
- a portable tool comprising a housing, a motor in said housing having a rotary power shaft projecting centrally through one end of said housing, a tool chuck mounted on said shaft outside said housing, a reciprocating bar extending through the opposite end of said housing parallel to but oifset from said power shaft, and adjacent a lateral housing wall, a tool chuck on the outer end of said bar, a speed reduction transmission means within said casing connecting said shaft and said bar to reciprocate the bar upon rotation of said shaft, said transmission means including manually adjustable means for varying the stroke amplitude of said reciprocating bar, through a continuous range of amplitudes.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Description
Nov. 4, 1958 F. P. WILLCOX ,3 03
POWER-DRIVEN HAND UNIT F OR ROTARY r AND REK'HIPROCATIIING TOOLS Filed June 29, 1955 1 l? Will/cox,
IN V EN TOR.
A rice/v6? llnited States Patent POWER-DRIVEN HAND UNIT FOR ROTARY AND RECIPROCATING TOOLS Frederick P. Willcox, Old Westbury, N. Y. Application June 29, 1955, Serial No. 518,808 3 Claims. (Cl. 7444) This invention pertains to an electrically powered tool which will provide the mechanic, jeweler, model maker and others with a compact and light weight device by which a variety of material working operations can be accomplished conveniently and efficiently. More specifically, the invention aims to provide a power driven hand tool suitable for driving bits, saws, files and similar implements to perform a wide variety of cutting and shaping operations in metal, plastic or the like, by imparting either rotary or reciprocating motion to an implement, or simultaneously providing both rotary and reciprocating motions.
In accordance with a preferred embodiment of the invention, the basic unit includes two chucks or implement holders, one providing a rotary motion output and the other a reciprocating motion output, and such that the working stroke of the reciprocating output can be adjusted smoothly and continuously over its entire range of strokes.
The invention further provides a compact multi-purpose tool of the above kindwhich uses only a single motor to obtain both kinds of motions, and in which certain parts of the linkage or connections between the motor and the output devices (chuck or chucks) are common to both kinds of motive outputs. The satisfaction of this object permits a great flexibility in selecting the kind of drive employed for the material working implement, without adversely increasing the size, weight or cost of the entire unit. Thus, a unit according to the invention permits such diverse operations as drilling, rotary grinding, reciprocating grinding, rotary and reciprocating filing, and rotary and reciprocating sawing, as well as other special operations that will be apparent to the skilled user of the device.
A preferred embodiment of the invention will now be described in detail, by way of example, in connection with the appended drawings, in which:
Fig. l is a side elevation of a preferred form of the invention, in which separate tool holders are provided for rotary and reciprocating motions, one being substantially axial with the casing and the other having an axis displaced to one side of the casing.
Fig. 2 is a diagrammatic view partly in perspective of the internal parts of the invention, and
Fig. 3 is a fragmentary perspective exploded view, partly in section, the section being taken on line 33 of Fig. 2.
Referring now to the drawings, and first to Fig. l thereof, the major body of the device comprises a casing containing a rotary motor, whose shaft drives directly a chuck or tool holder 12 which therefore undergoes rotation only. Casing 10 includes brush holders (one indicated at 14), ventilating slots 16 and end covers 18 and 20. Cover 18 adjacent chuck 12 is preferably knurled as at 22 for a convenient hand grip. The axis of rotation of chuck 12 will desirably lie along the central axis of the motor. A separate drive transmission imparts reciprocative motion to a second tool holder 24 extending out from the opposite end cover 20 of the motor casing,
and for economy of design as well as for operative convenience in close working spaces, the axis of this holder may lie displaced from, the motor axis adjacent the outer wall of the main casing 10. The general layout of parts is indicated schematically in Fig. 2, 26 designating the motor armature rotating in the field structure 28, the electrical circuit including a; speed control rheostat 30.
The motor shaft 32 carries, a worm 34 meshing with a worm wheel 36 coupled to a wheelv 38. Wheels 36 and 38 may actually be made of a single piece, or they may be connected by a shaft such as- 40. In any event, eccentrically pivoted to wheel 38 is the link 42 pivoted to. the reciprocating shaft 44 which leads outside the casing to the tool holder 24, the parts within the casing being indicated as within the dashed casing outline 10. Suitable bearings and guides, carried by the casing, are provided for both shafts.
In order to control the stroke length of tool holder 24, it is only necessary to vary the effective radius at which link 42 is connected to wheel 38. This could be accomplished by providing a series of pivot holes in the wheel 38 at difierent radii, but a continuous variation of effective radius can be achieved by the means shown in Fig. 3. In that figure, wheel 38 carries a pin 46 which is olfcenter with respect to the wheel. Journalled on this pin is an eccentric collar 48, so that the angular position of pin 46 and collar 48 determines the degree of eccentricity, with respect to the axis of wheel 38, of the outer cylindrical surface of collar 48. This angular relation is fixed, when properly set, by clamping collar 48 against wheel 38 as by a screw 50 passing through the collar and threaded into the end of pin 46. Pin 46 may be integral with wheel 38, or may be secured thereto as by a C-ring 52 which snaps into a groove of pin 46 at the rear side of wheel 38. In the latter case, and since the shaft 40 connected to wheel 38 would interfere with the application of the C-ring, the connection between shaft 40 and wheel 38 may be by an enlarged hub on the shaft 40 which is hollowed out to enable the C-ring to be applied or, as shown in Fig. 3, the end of the shaft may be bifurcated as at 54 to provide clearance for the C-ring to be slipped over the end of pin 46.
To provide access for adjustment of the position of the pivot center, the casing 10 (Fig. 1) may be provided with an access hole to screw 50, and a suitable cover 56.
In tools of this sort, which are intended to be held in the hand of the user, the production of adequate power without excessive size and relatively high-speed motor, for example one of the universal type which may have a no-load speed of several thousand revolutions per minute. Such speeds are well adapted for rotary tool applications, but of course are far too high for direct reciprocation of such a tool as a file or saw blade. The present design utilizes a worm reduction gearing for the reciprocative drive only, to accomplish two ends; first, a substantial reduction in rotational speed before the rotary motion is converted to a reciprocating motion, without excessive complication of the converting mechanism, and second, the offset arrangement by which the reciprocating bar is disposed adjacent a casing Wall rather than centrally thereof. As has been stated, this offset relation permits working in close spaces and is generally superior when reciprocating tools are employed.
While the invention has been described in detail as to a preferred embodiment, it will be obvious to those skilled in the art that the novel principles of the invention can be carried out with specifically different structures. Hence, the foregoing description is not to be taken as limting the scope of the invention, which is defined in the appended claims.
weight necessitates a single Iclaim:
1. A portable tool comprising a housing, a motor in said housing having a rotary power shaft projecting centrally through one end of said housing, a tool chuck mounted on said shaft outside said housing, a reciprocating bar extending through the opposite end of said housing parallel to but oifset from said power shaft, and adjacent a lateral housing wall, a tool chuck on the outer end of said bar, a speed reduction transmission means within said casing connecting said shaft and said bar to reciprocate the bar upon rotation of said shaft, said transmission means including manually adjustable means for varying the stroke amplitude of said reciprocating bar, through a continuous range of amplitudes.
2. A portable tool in accordance with claim 1 in which the means for adjusting the stroke amplitude of the reciprocating bar includes a variable eccentric.
3. A portable tool in accordance with claim 1 in which said transmission means connecting said central shaft and the reciprocating bar includes an eccentric shaft mounted for adjustment of its eccentricity from without said hous- References Cited in the file of this patent UNITED STATES PATENTS 272,511 Angell Feb. 20, 1883 1,521,359 Costa Dec. 30, 1924 2,138,862 Johnston Dec. 6, 1938 2,526,976 Smith Oct. 24, 1950
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US518808A US2858703A (en) | 1955-06-29 | 1955-06-29 | Power-driven hand unit for rotary and reciprocating tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US518808A US2858703A (en) | 1955-06-29 | 1955-06-29 | Power-driven hand unit for rotary and reciprocating tools |
Publications (1)
Publication Number | Publication Date |
---|---|
US2858703A true US2858703A (en) | 1958-11-04 |
Family
ID=24065587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US518808A Expired - Lifetime US2858703A (en) | 1955-06-29 | 1955-06-29 | Power-driven hand unit for rotary and reciprocating tools |
Country Status (1)
Country | Link |
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US (1) | US2858703A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3286776A (en) * | 1964-06-23 | 1966-11-22 | Kenneth Conklin | Combination power hand tool |
US3421522A (en) * | 1965-02-04 | 1969-01-14 | Vincent Anthony Magguilli | Hair teasing device |
US3470575A (en) * | 1968-05-13 | 1969-10-07 | Kenneth E Larson | Hairbrush cleaner |
US3511229A (en) * | 1967-08-10 | 1970-05-12 | Eloise H Romo | Portable battery operated hair shampooer |
US3533600A (en) * | 1966-10-18 | 1970-10-13 | Lawrence G Gerson | Combination rotary beater and reciprocating knife kitchen appliance |
US3712751A (en) * | 1971-05-20 | 1973-01-23 | W Dietrich | Multiple purpose power tool for portable and bench use |
US3869927A (en) * | 1973-09-06 | 1975-03-11 | Gulf & Western Ind Prod Co | Geared drag link-slider-crank press |
US4037283A (en) * | 1976-08-03 | 1977-07-26 | David Moisiuk | Electric stippling device |
US5423102A (en) * | 1994-08-19 | 1995-06-13 | Madison; Ava | Portable cleaning device |
US5529494A (en) * | 1995-01-18 | 1996-06-25 | Vlacancich; Tanya | Dental tool driving device |
US20090022562A1 (en) * | 2007-07-17 | 2009-01-22 | David Bunthean Chin | Multiple flex-shaft adapter for electric drill |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US272511A (en) * | 1883-02-20 | ang-ell | ||
US1521359A (en) * | 1924-03-01 | 1924-12-30 | Standard Electric Products Inc | Motor drive |
US2138862A (en) * | 1936-12-22 | 1938-12-06 | Walter E Johnston | Utility tool |
US2526976A (en) * | 1946-07-12 | 1950-10-24 | Duke Lanfre M | Power-operated hand tool |
-
1955
- 1955-06-29 US US518808A patent/US2858703A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US272511A (en) * | 1883-02-20 | ang-ell | ||
US1521359A (en) * | 1924-03-01 | 1924-12-30 | Standard Electric Products Inc | Motor drive |
US2138862A (en) * | 1936-12-22 | 1938-12-06 | Walter E Johnston | Utility tool |
US2526976A (en) * | 1946-07-12 | 1950-10-24 | Duke Lanfre M | Power-operated hand tool |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3286776A (en) * | 1964-06-23 | 1966-11-22 | Kenneth Conklin | Combination power hand tool |
US3421522A (en) * | 1965-02-04 | 1969-01-14 | Vincent Anthony Magguilli | Hair teasing device |
US3533600A (en) * | 1966-10-18 | 1970-10-13 | Lawrence G Gerson | Combination rotary beater and reciprocating knife kitchen appliance |
US3511229A (en) * | 1967-08-10 | 1970-05-12 | Eloise H Romo | Portable battery operated hair shampooer |
US3470575A (en) * | 1968-05-13 | 1969-10-07 | Kenneth E Larson | Hairbrush cleaner |
US3712751A (en) * | 1971-05-20 | 1973-01-23 | W Dietrich | Multiple purpose power tool for portable and bench use |
US3869927A (en) * | 1973-09-06 | 1975-03-11 | Gulf & Western Ind Prod Co | Geared drag link-slider-crank press |
US4037283A (en) * | 1976-08-03 | 1977-07-26 | David Moisiuk | Electric stippling device |
US5423102A (en) * | 1994-08-19 | 1995-06-13 | Madison; Ava | Portable cleaning device |
US5529494A (en) * | 1995-01-18 | 1996-06-25 | Vlacancich; Tanya | Dental tool driving device |
US20090022562A1 (en) * | 2007-07-17 | 2009-01-22 | David Bunthean Chin | Multiple flex-shaft adapter for electric drill |
US7677328B2 (en) | 2007-07-17 | 2010-03-16 | David Bunthean Chin | Multiple flex-shaft adapter for electric drill |
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