US2501631A - Mechanism for converting rotary motion to reciprocatory motion - Google Patents
Mechanism for converting rotary motion to reciprocatory motion Download PDFInfo
- Publication number
- US2501631A US2501631A US738660A US73866047A US2501631A US 2501631 A US2501631 A US 2501631A US 738660 A US738660 A US 738660A US 73866047 A US73866047 A US 73866047A US 2501631 A US2501631 A US 2501631A
- Authority
- US
- United States
- Prior art keywords
- motion
- power transmitting
- tool
- driven member
- reciprocatory
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
-
- 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
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
- B23D49/16—Hand-held or hand-operated sawing devices with straight saw blades actuated by electric or magnetic power or prime movers
- B23D49/162—Pad sawing devices
-
- 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
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/16—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
-
- 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
- B23D57/00—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00
- B23D57/0076—Devices for converting any machine for sawing purposes
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
- F16H21/18—Crank gearings; Eccentric gearings
- F16H21/36—Crank gearings; Eccentric gearings without swinging connecting-rod, e.g. with epicyclic parallel motion, slot-and-crank motion
- F16H21/365—Crank gearings; Eccentric gearings without swinging connecting-rod, e.g. with epicyclic parallel motion, slot-and-crank motion with planetary gearing having a ratio of 2:1 between sun gear and planet gear
-
- 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
- Y10T74/18248—Crank and slide
- Y10T74/18256—Slidable connections [e.g., scotch yoke]
-
- 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
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8878—Guide
- Y10T83/8881—With anti-friction means
- Y10T83/8883—Roller with peripheral flange or groove
Definitions
- This .invention relates to motor-driven tools designated to be moved by hand, and more especially to motor-driven reciprocating hand tools such as saws, cutters, files and the like, wherein the handle of the tool is formed by the motor housing.
- a further object of the invention is to provide a mechanism for converting the rotary motion of a motor into rectilinear reciprocatory motion, while eliminating the vibrations generated by its masses while they reciprocate at frequencies of at least 3000 power cycles per minute.
- Fig. 1 is a perspective view of the tool as a whole; while Fig. 2 is an axial sectional view,.
- Fig. 3 being a front view wherein the cover with the reciprocating tool is removed to show the disposition of parts of the mechanism and some of the counterbalance elements.
- Fig. 4 is a part sectional view of a second embodiment.
- the mechanism here illustrated shows a motor shaft fitted with a pinion which drives two gear wheels of equal size positioned in substantially the same plane and on a common diameter line.
- One gear wheel actuates a reciprocating device, which in turn reciprocates a tool, while the other gear wheel actuates a reciprocating device, which in turn reciprocates a counterbalance, the respective mo- 7 tions of both being such that the reciprocation of one of said devices is opposed to that of the other, thereby producing a uniform and vibrationless action of the tool.
- the handle of the tool is formed by the housing I of an electric motor having a front bearing plate 2 through which projects the motor shaft 3, which is fitted with a pinion 4.
- two gear wheels 5 and 6 are rotatably mounted on their fixed journals 5a and 6a respectively. Both of these gear wheels have an equal number of teeth. They are permanently 2 in mesh with the pinion 4 on the motor shaft and are driven by it when the motor is operated.
- On one of the gear wheels 5 a crank pin 1 is eccentrically mounted. This crank pin I engages a slot 8 in a carrier 9, which is fixed to a reciprocatable tool arm E0 to which the tool H is secured.
- the reciprocatable tool arm Ill is mounted in a guide l4 which is supported in the casing l3 of the gear-box l2 and has at one end a head 15 adapted to grip the tool I l which is secured therein by a fastening screw it.
- the tool H in the present case a saw, is Supported by means of an adjustable guide I! with a counter-pressure roller I 8 bearing against the tool. It is obvious that the saw may be replaced by a cutter or by a file without departing from the scope of the invention.
- a supporting plate or pedestal base I9 is arranged parallel to the motor axis. This plate is slotted lengthwise and through the slot the reciprocating tool projects at right angles to the base l9 which permits of the latter resting on the work and being used as in Fig. 1.
- a base member 28 may be provided by which may support the mechanism, as for example, in a vise 29. When so mounted, the reciprocating tool is directed vertically upwards and the pedestal base I 9 serves as a work stage.
- the pedestal base may be adjustably mounted on the gearbox l2 and may be movable by means of joints I (not shown), thus permitting the work to be presented to the tool at any angle.
- gear wheel 6 Diametrically opposed to the aforementioned gear wheel 5 is the second gear wheel 6 mounted on its journal 6a.
- the latter gearwheel 6 is fitted with a crank pin 20 which engages with a transverse slot 2i in the counter-balance weight 22.
- This weight has on its other side, at right angles to the transverse slot, two guide slots 23 fitting guides 24 which are mounted orformed in the interior of the gear-box I2 so as to keep the balance weight in rectilinear direction.
- reciprocation of the tool arm I and of the balance weight 22 may be accomplished by rods connected to crank pins on the gear wheels I and 8 by spigots fixed to the reciprocating parts and riding in eccentric grooves out into the face of the gear wheels.
- an aperture 25 is provided therein with a copper plate 21 rockably fastened to the gear box by a screw 28.
- FIG. 4 provides for the motor being able to serve other purposes besides the one described, for instance, to drive a small compressor (not shown) or'some other suitable implement secured to its front end.
- an intermediate bearing plate 31 supporting the gearing components, and a disengaging clutch 30 on the motor shaft between the intermediate plate 3i and the front bearing plate 2 may be incorporated in the mechanism.
- the said intermediate bearing plate 3i may be fastened to the motor housing by means of screws or in some other manner.
- a mechanism for converting high speed rotary motion of a prime mover into high speed reciprocating motion of a driven member and a counter-balancing mass comprising, a first power transmitting member mounted for rotation about an axis parallel to said prime mover for driving said driven member, a second power transmitting member mounted for rotation about a second axis parallel to said prime mover for driving said mass, said power transmitting members being positioned in substantially the same plane and spaced from one another, means positioned between said power transmitting members for driving said power transmitting members from said prime mover, guiding means for said driven member positioned in proximity to said second power transmitting member and spaced therefrom, said driven member being slidably supported by said guiding means for reciprocating movement in a plane substantially parallel to the plane of said power transmitting members and extending from a point in the proximity of and opposite to said second power transmitting member to a point in proximity to said first power transmitting member, means supporting said mass for reciprocating movement intermediate said driven member and said second power transmitting means, means on each of said driven member and
- a mechanism for converting high speed rotary motion of a prime mover into high speed reciprocating motion of a driven member and a counter-balancing mass comprising, a first power transmitting member mounted for rotation about an axis parallel to said prime mover for driving said driven member, a second power transmitting member mounted for rotation about a second axis parallel to said prime mover for driving said mass, said power transmitting members being positioned in substantially the same plane and spaced from one another, means positioned between said power transmitting members for driving said power transmitting members from said prime mover, guiding means for said driven member, said guiding means including a sleeve opposite to and spaced from said second.
- said driven member being slidably supported in said sleeve for reciprocating movement in a plane substantially parallel to the plane of said power transmitting members and extending from within said sleeve to a point in proximity to said first power transmitting member, means supporting said mass for reciprocating movement intermediate said driven member and said second power transmitting means, means on each of said driven member and said counter-balancing mass extending transversely of said axes and of the direction of movement of said mass and said driven member, and a crank member on each of said power transmitting members operatively engaging said transversely extending means so as to move each of said counter-balancing mass and driven member simultaneously.
Description
gamma I March 21, 1950 MECHANISM FOR CNVERTING ROTARY MOTION To RECIPROCATORY MOTION 2 Sheets-Sheet 1' Filed April 1, 1947 Q m. 2 /0 N PM mm u an m E cm W J 4 m n n M n u 2. W n m M n m W 2 M. OSCHWALD MECHANISM FOR CONVERTING ROTARY MOTION TO RECIPROCATORY MOTION 2 Sheets-Sheet 2 Filed April 1, 1947 atented Mar. 21, 1950 MECHANISM FOR CONVERTING ROTAItY MOTION TO RECIPROCATORY MOTION Max Oschwald, Zuchwil, Switzerland, assignor T to Scintilla A-G., Solothurn, Switzerland, a cornotation of Switzerland Application April 1, 1947, Serial No. 738,660 In Switzerland November 24, 1944 Secion 1, Public Law 690, August 8, 1946 Patent expires November 24, 1964 2 Claims.
This .invention relates to motor-driven tools designated to be moved by hand, and more especially to motor-driven reciprocating hand tools such as saws, cutters, files and the like, wherein the handle of the tool is formed by the motor housing.
It is an object of the invention to provide a light and handy tool permitting to operate on work pieces that are too bulky to be worked on a machine tool, such as large plywood panels or lumber boards, or which enables work to be performed in positions which are inaccessible for ordinary hand tools.
A further object of the invention is to provide a mechanism for converting the rotary motion of a motor into rectilinear reciprocatory motion, while eliminating the vibrations generated by its masses while they reciprocate at frequencies of at least 3000 power cycles per minute.
In order that the invention may be more readily understood, I will now describe two embodiments thereof which are illustrated diagrammatically by way of example in the accompanying drawings, in which:
Fig. 1 is a perspective view of the tool as a whole; while Fig. 2 is an axial sectional view,.
drawn to a larger scale, of a first embodiment of the invention.
Fig. 3 being a front view wherein the cover with the reciprocating tool is removed to show the disposition of parts of the mechanism and some of the counterbalance elements.
Fig. 4 is a part sectional view of a second embodiment.
Referring first to Figs. 1 to 3, the mechanism here illustrated shows a motor shaft fitted with a pinion which drives two gear wheels of equal size positioned in substantially the same plane and on a common diameter line. One gear wheel actuates a reciprocating device, which in turn reciprocates a tool, while the other gear wheel actuates a reciprocating device, which in turn reciprocates a counterbalance, the respective mo- 7 tions of both being such that the reciprocation of one of said devices is opposed to that of the other, thereby producing a uniform and vibrationless action of the tool.
The handle of the tool is formed by the housing I of an electric motor having a front bearing plate 2 through which projects the motor shaft 3, which is fitted with a pinion 4. On the front bearing plate 2 two gear wheels 5 and 6 are rotatably mounted on their fixed journals 5a and 6a respectively. Both of these gear wheels have an equal number of teeth. They are permanently 2 in mesh with the pinion 4 on the motor shaft and are driven by it when the motor is operated. On one of the gear wheels 5 a crank pin 1 is eccentrically mounted. This crank pin I engages a slot 8 in a carrier 9, which is fixed to a reciprocatable tool arm E0 to which the tool H is secured.
The reciprocatable tool arm Ill is mounted in a guide l4 which is supported in the casing l3 of the gear-box l2 and has at one end a head 15 adapted to grip the tool I l which is secured therein by a fastening screw it. The tool H, in the present case a saw, is Supported by means of an adjustable guide I! with a counter-pressure roller I 8 bearing against the tool. It is obvious that the saw may be replaced by a cutter or by a file without departing from the scope of the invention.
On one side of the gear-box l2 a supporting plate or pedestal base I9 is arranged parallel to the motor axis. This plate is slotted lengthwise and through the slot the reciprocating tool projects at right angles to the base l9 which permits of the latter resting on the work and being used as in Fig. 1. On the opposite side of the gearbox a base member 28 may be provided by which may support the mechanism, as for example, in a vise 29. When so mounted, the reciprocating tool is directed vertically upwards and the pedestal base I 9 serves as a work stage. The pedestal base may be adjustably mounted on the gearbox l2 and may be movable by means of joints I (not shown), thus permitting the work to be presented to the tool at any angle.
Diametrically opposed to the aforementioned gear wheel 5 is the second gear wheel 6 mounted on its journal 6a. The latter gearwheel 6 is fitted with a crank pin 20 which engages with a transverse slot 2i in the counter-balance weight 22.
This weight has on its other side, at right angles to the transverse slot, two guide slots 23 fitting guides 24 which are mounted orformed in the interior of the gear-box I2 so as to keep the balance weight in rectilinear direction.
When, by means of the motor, the pinion 4 on its shaft and the gear wheels 5 and 6 engaging scribed above, reciprocation of the tool arm I and of the balance weight 22 may be accomplished by rods connected to crank pins on the gear wheels I and 8 by spigots fixed to the reciprocating parts and riding in eccentric grooves out into the face of the gear wheels.
For greasing the moving parts in the gearbox i2, an aperture 25 is provided therein with a copper plate 21 rockably fastened to the gear box by a screw 28.
The embodiment shown in Fig. 4 provides for the motor being able to serve other purposes besides the one described, for instance, to drive a small compressor (not shown) or'some other suitable implement secured to its front end. In order to facilitate conversion, an intermediate bearing plate 31 supporting the gearing components, and a disengaging clutch 30 on the motor shaft between the intermediate plate 3i and the front bearing plate 2, may be incorporated in the mechanism. The said intermediate bearing plate 3i may be fastened to the motor housing by means of screws or in some other manner.
I wish it to be understood that I do not desire to be limited to the details of construction shown and described, for obvious modifications will occur to a person skilled in the art.
I claim:
1. A mechanism for converting high speed rotary motion of a prime mover into high speed reciprocating motion of a driven member and a counter-balancing mass comprising, a first power transmitting member mounted for rotation about an axis parallel to said prime mover for driving said driven member, a second power transmitting member mounted for rotation about a second axis parallel to said prime mover for driving said mass, said power transmitting members being positioned in substantially the same plane and spaced from one another, means positioned between said power transmitting members for driving said power transmitting members from said prime mover, guiding means for said driven member positioned in proximity to said second power transmitting member and spaced therefrom, said driven member being slidably supported by said guiding means for reciprocating movement in a plane substantially parallel to the plane of said power transmitting members and extending from a point in the proximity of and opposite to said second power transmitting member to a point in proximity to said first power transmitting member, means supporting said mass for reciprocating movement intermediate said driven member and said second power transmitting means, means on each of said driven member and said counter-balancing mass extending transversely of said axes and of the direction of movement of said mass and said driven member, and a crank member on each of said power transmitting members operatively engaging said transversely extending means so as to move each of said counter-balancing mass and driven member simultaneously.
2. A mechanism for converting high speed rotary motion of a prime mover into high speed reciprocating motion of a driven member and a counter-balancing mass comprising, a first power transmitting member mounted for rotation about an axis parallel to said prime mover for driving said driven member, a second power transmitting member mounted for rotation about a second axis parallel to said prime mover for driving said mass, said power transmitting members being positioned in substantially the same plane and spaced from one another, means positioned between said power transmitting members for driving said power transmitting members from said prime mover, guiding means for said driven member, said guiding means including a sleeve opposite to and spaced from said second. power trans mitting member, said driven member being slidably supported in said sleeve for reciprocating movement in a plane substantially parallel to the plane of said power transmitting members and extending from within said sleeve to a point in proximity to said first power transmitting member, means supporting said mass for reciprocating movement intermediate said driven member and said second power transmitting means, means on each of said driven member and said counter-balancing mass extending transversely of said axes and of the direction of movement of said mass and said driven member, and a crank member on each of said power transmitting members operatively engaging said transversely extending means so as to move each of said counter-balancing mass and driven member simultaneously.
MAX OSCHWALD.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 200,306 Irick Feb. 12, 1878 I 702,371 Meyer June 10, 1902 812,507 Ludewlck Feb. 13, 1906 841,325 King Jan. 15, 1907 1,126,899 Specht et a1. Feb. 2, 1915 1,382,821 Coates June 28, 1921 1,542,127 Hastings June 16, 1925 1,620,374 Maloney Mar. 8, 1927 1,643,721 Meyer Sept. 27, 1927 1,648,008 Selby et a1 Nov. 8, 1927 1,661,217 Farrell Mar. 6, 1928 I 1,700,114 Thompson Jan. 22, 1929 1,700,115 Thompson Jan. 22, 1929 1,789,804 Broillet Jan. 20, 1931 1,868,507 Ros July 26, 1932 2,138,862 Johnston Dec. 6, 1938 2,281,641 Toop May 5, 1942 2,282,728 Kern May 12, 1942 2,328,613 Burleigh Sept. 7, 1943 2,345,383 Curtis Mar. 28, 1944 2,428,924 Albertson Oct. 14, 1947
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41786A US2506736A (en) | 1947-04-01 | 1948-07-31 | Motor-driven hand tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2501631X | 1944-11-24 |
Publications (1)
Publication Number | Publication Date |
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US2501631A true US2501631A (en) | 1950-03-21 |
Family
ID=4569687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US738660A Expired - Lifetime US2501631A (en) | 1944-11-24 | 1947-04-01 | Mechanism for converting rotary motion to reciprocatory motion |
Country Status (3)
Country | Link |
---|---|
US (1) | US2501631A (en) |
CH (1) | CH255189A (en) |
NL (2) | NL62873C (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2584335A (en) * | 1948-12-27 | 1952-02-05 | Hal W Dahly | Parallel thrust drive |
US2611400A (en) * | 1949-06-25 | 1952-09-23 | Harold S Forsberg | Saw table for portable power driven reciprocating handsaws |
US2639737A (en) * | 1948-07-03 | 1953-05-26 | Harold S Forsberg | Motor driven reciprocating saw |
US2651906A (en) * | 1950-02-17 | 1953-09-15 | Sl Allen & Co Inc | Mowing machine having vibration neutralizing means |
US2662413A (en) * | 1949-09-21 | 1953-12-15 | Int Register Co | Cutting machine drive means |
US2735458A (en) * | 1951-04-27 | 1956-02-21 | Buchmann | |
US2760457A (en) * | 1951-02-15 | 1956-08-28 | Rabezzana Hector | Sewing machine |
US2775272A (en) * | 1953-11-27 | 1956-12-25 | Walter A Papworth | Portable power driven reciprocable cutting tool |
US2793661A (en) * | 1954-10-04 | 1957-05-28 | Holly M Olson | Power driven reciprocating saw unit |
US2839101A (en) * | 1956-02-07 | 1958-06-17 | Skil Corp | Portable power-driven reciprocating saw |
US2841993A (en) * | 1955-10-25 | 1958-07-08 | Scintilla Ltd Fa | Drive for hand power tools |
US2914099A (en) * | 1955-04-06 | 1959-11-24 | Scintilla Ltd | Power hand cutting tool |
US2917088A (en) * | 1956-12-04 | 1959-12-15 | Walter A Papworth | Manually portable power driven cutting tool with oval stroke |
US2949944A (en) * | 1958-06-27 | 1960-08-23 | Oster Mfg Co John | Portable hand held saw |
US2970484A (en) * | 1959-04-20 | 1961-02-07 | Robbins & Myers | Balancing mechanism for sabre saws and the like |
US2988924A (en) * | 1957-12-03 | 1961-06-20 | Stanley Works | Sabre saw |
US3017779A (en) * | 1957-07-10 | 1962-01-23 | Albert P Beals | Reciprocating drive mechanism |
US3088358A (en) * | 1957-12-20 | 1963-05-07 | Konink Metaalfab V H J N Daald | Tool support absorbing tool reactionary force |
US3422688A (en) * | 1965-12-02 | 1969-01-21 | Bruderer Ag | Arrangement for counterbalancing the forces in crankshaft driven machines |
US3460770A (en) * | 1967-01-30 | 1969-08-12 | Fort Wayne Tool & Die Inc | Stator winding apparatus |
US20040255475A1 (en) * | 2003-06-23 | 2004-12-23 | Makita Corporation | Reciprocating power tool |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3200326C1 (en) * | 1982-01-08 | 1983-08-11 | Karl-Heinz Dr.-Ing. 3014 Laatzen Raes | Device for converting a rotary motion into a reciprocating motion and vice versa |
DE3607234A1 (en) * | 1985-03-05 | 1987-05-21 | Christoph Mertens | Double eccentric drive for the conversion of a rectilinear reciprocating motion into a uniform rotary motion and vice versa |
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US1661217A (en) * | 1926-03-08 | 1928-03-06 | Farrell Fred | Power-driven butcher saw |
US1700114A (en) * | 1925-12-09 | 1929-01-22 | Claude H Thompson | Surface-polishing machine |
US1700115A (en) * | 1926-09-23 | 1929-01-22 | Claude H Thompson | Polishing machine |
US1789804A (en) * | 1927-12-24 | 1931-01-20 | Irwin Rosenthal | Saw |
US1868507A (en) * | 1930-01-25 | 1932-07-26 | Freed A | Portable sander and polisher |
US2138862A (en) * | 1936-12-22 | 1938-12-06 | Walter E Johnston | Utility tool |
US2281641A (en) * | 1940-12-27 | 1942-05-05 | Toop Frederick | Mechanism for converting rotary motion to reciprocatory motion |
US2282728A (en) * | 1940-11-19 | 1942-05-12 | Joseph W Kern | Attachment for rotary drills or the like |
US2328613A (en) * | 1940-05-02 | 1943-09-07 | Skilsaw Inc | Abrading and polishing device |
US2345383A (en) * | 1941-12-31 | 1944-03-28 | John S Curtis | Mowing machine |
US2428924A (en) * | 1944-07-24 | 1947-10-14 | Minneapolis Moline Power Co | Counterbalance mechanism |
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0
- NL NL70975D patent/NL70975C/xx active
- NL NL62873D patent/NL62873C/xx active
-
1945
- 1945-02-15 CH CH255189D patent/CH255189A/en unknown
-
1947
- 1947-04-01 US US738660A patent/US2501631A/en not_active Expired - Lifetime
Patent Citations (21)
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US1643721A (en) * | 1927-09-27 | op cincinnati | ||
US200306A (en) * | 1878-02-12 | Improvement in reciprocating churns | ||
US702371A (en) * | 1901-04-13 | 1902-06-10 | Henry Andrew Meyer | Motor-driven device or mechanism. |
US812507A (en) * | 1904-12-30 | 1906-02-13 | William H Ludewig | Surgical operating-engine. |
US841325A (en) * | 1906-10-18 | 1907-01-15 | Simplex Cutting Machine Co | Cloth-cutting machine. |
US1126899A (en) * | 1914-01-24 | 1915-02-02 | Christ Specht | Device for converting motion. |
US1382821A (en) * | 1920-02-06 | 1921-06-28 | Chicago Pneumatic Tool Co | Power-hammer |
US1542127A (en) * | 1924-10-31 | 1925-06-16 | Charles B Hastings | Portable electric saw |
US1620374A (en) * | 1925-03-28 | 1927-03-08 | Edward J Maloney | Motorized handsaw |
US1648008A (en) * | 1925-12-01 | 1927-11-08 | Holland Furnace Co | Power-driven handsaw |
US1700114A (en) * | 1925-12-09 | 1929-01-22 | Claude H Thompson | Surface-polishing machine |
US1661217A (en) * | 1926-03-08 | 1928-03-06 | Farrell Fred | Power-driven butcher saw |
US1700115A (en) * | 1926-09-23 | 1929-01-22 | Claude H Thompson | Polishing machine |
US1789804A (en) * | 1927-12-24 | 1931-01-20 | Irwin Rosenthal | Saw |
US1868507A (en) * | 1930-01-25 | 1932-07-26 | Freed A | Portable sander and polisher |
US2138862A (en) * | 1936-12-22 | 1938-12-06 | Walter E Johnston | Utility tool |
US2328613A (en) * | 1940-05-02 | 1943-09-07 | Skilsaw Inc | Abrading and polishing device |
US2282728A (en) * | 1940-11-19 | 1942-05-12 | Joseph W Kern | Attachment for rotary drills or the like |
US2281641A (en) * | 1940-12-27 | 1942-05-05 | Toop Frederick | Mechanism for converting rotary motion to reciprocatory motion |
US2345383A (en) * | 1941-12-31 | 1944-03-28 | John S Curtis | Mowing machine |
US2428924A (en) * | 1944-07-24 | 1947-10-14 | Minneapolis Moline Power Co | Counterbalance mechanism |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2639737A (en) * | 1948-07-03 | 1953-05-26 | Harold S Forsberg | Motor driven reciprocating saw |
US2584335A (en) * | 1948-12-27 | 1952-02-05 | Hal W Dahly | Parallel thrust drive |
US2611400A (en) * | 1949-06-25 | 1952-09-23 | Harold S Forsberg | Saw table for portable power driven reciprocating handsaws |
US2662413A (en) * | 1949-09-21 | 1953-12-15 | Int Register Co | Cutting machine drive means |
US2651906A (en) * | 1950-02-17 | 1953-09-15 | Sl Allen & Co Inc | Mowing machine having vibration neutralizing means |
US2760457A (en) * | 1951-02-15 | 1956-08-28 | Rabezzana Hector | Sewing machine |
US2735458A (en) * | 1951-04-27 | 1956-02-21 | Buchmann | |
US2775272A (en) * | 1953-11-27 | 1956-12-25 | Walter A Papworth | Portable power driven reciprocable cutting tool |
US2793661A (en) * | 1954-10-04 | 1957-05-28 | Holly M Olson | Power driven reciprocating saw unit |
US2914099A (en) * | 1955-04-06 | 1959-11-24 | Scintilla Ltd | Power hand cutting tool |
US2841993A (en) * | 1955-10-25 | 1958-07-08 | Scintilla Ltd Fa | Drive for hand power tools |
US2839101A (en) * | 1956-02-07 | 1958-06-17 | Skil Corp | Portable power-driven reciprocating saw |
US2917088A (en) * | 1956-12-04 | 1959-12-15 | Walter A Papworth | Manually portable power driven cutting tool with oval stroke |
US3017779A (en) * | 1957-07-10 | 1962-01-23 | Albert P Beals | Reciprocating drive mechanism |
US2988924A (en) * | 1957-12-03 | 1961-06-20 | Stanley Works | Sabre saw |
US3088358A (en) * | 1957-12-20 | 1963-05-07 | Konink Metaalfab V H J N Daald | Tool support absorbing tool reactionary force |
US2949944A (en) * | 1958-06-27 | 1960-08-23 | Oster Mfg Co John | Portable hand held saw |
US2970484A (en) * | 1959-04-20 | 1961-02-07 | Robbins & Myers | Balancing mechanism for sabre saws and the like |
US3422688A (en) * | 1965-12-02 | 1969-01-21 | Bruderer Ag | Arrangement for counterbalancing the forces in crankshaft driven machines |
US3460770A (en) * | 1967-01-30 | 1969-08-12 | Fort Wayne Tool & Die Inc | Stator winding apparatus |
US20040255475A1 (en) * | 2003-06-23 | 2004-12-23 | Makita Corporation | Reciprocating power tool |
US7363713B2 (en) * | 2003-06-23 | 2008-04-29 | Makita Corporation | Reciprocating power tool |
Also Published As
Publication number | Publication date |
---|---|
NL70975C (en) | 1900-01-01 |
NL62873C (en) | 1900-01-01 |
CH255189A (en) | 1948-06-15 |
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