US2767483A - Leveling device for hand tool - Google Patents

Leveling device for hand tool Download PDF

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Publication number
US2767483A
US2767483A US522957A US52295755A US2767483A US 2767483 A US2767483 A US 2767483A US 522957 A US522957 A US 522957A US 52295755 A US52295755 A US 52295755A US 2767483 A US2767483 A US 2767483A
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base plate
hand tool
tool
leveling device
plate
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Expired - Lifetime
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US522957A
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Jr Fred P Sauer
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/36—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble of the spherical type, i.e. for indicating the level in all directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0078—Guiding devices for hand tools
    • B25H1/0085—Guiding devices for hand tools by means of levels

Definitions

  • Claim. (Cl. 33-207) My invention relates to leveling devices and more particularly to a leveling device applicable for attachment to any type of hand tool.
  • the object of my invention is to provide a device that is adaptable for any type of hand tool such as electrically operated or manually operated drills, saws,
  • Another object of my invention is to provide a device of the character described that may be attached as an accessory to the hand tool, or may be made a permanent part thereof.
  • Still another object of my invention is to provide a device of the character described that may be adjusted after mounting, to provide accuracy, thereby adding
  • the device described and illustrated herein lends itself readily to be sold as an accessory adaptable for attachment in any convenient manner to the tool, and is designed to provide minute adjustment in its relation to the surface of the tool to which it is applied.
  • Figure 1 is a perspective view showing the device covered by the invention, attached to a conventional electric drill.
  • Figure 2 is an enlarged perspective view of the assembled device constituting my invention.
  • Figure 3 is a perspective view of the spherical enclosure for the leveling unit, illustrating its construction to make it adaptable for engagement with the cylindrical adapter into which it is inserted.
  • Figure 4 is a top view of the assembled unit.
  • Figure 5 is a cross section of the entire assembled device taken on line 5-5 of Figure 4.
  • Figure 6 is an enlarged fragmentary detail cross section of the means for providing adjustment, comprising adjustment screw threadedly inserted into the base and extending into a conical recess in the bottom face of the adapter plate; and
  • Figure 7 is a view similar to Figure 6, but with the top surface of the turning knob of the adjustment screw serrated for contact with the bottom surface of the adapter plate.
  • 10 indicates a fanciful 2,767,483 Fatented Oct. 23, 1956 perspective view of an electric drill, on which the device of my invention shown as 11 is detachably mounted by means of a pliable strap 12, equipped with a buckle or fastening assembly 13.
  • the device constituting my invention consists of a receiver 14 herein shown as a circular container open at its top and bottom and formed integrally with a generally rectangular base plate 15.
  • Said base plate has a pair of elongated slots 16 and 16' through opposite edges to accommodate a pliable band 12 extending therethrough.
  • a hollow spherical liquid bubble enclosure 17 constructed of suitable transparent material has a cylindrical bottom extension 18, through which a central filling passage 19 extends.
  • the outer peripheral surface; of. the extension 18 is shown with threads to aid in retaining the extension 18 in a fixed position in the receiver 14 when coated with a suitable adherent agent, as shown in Figure 5.
  • the spherical bubble enclosure 17 is filled with a liquid through the passage 19, after which said passage is closed by a plug 20 driven therein, which may be sealed in position by any suitable adherent agent.
  • a plug 20 driven therein, which may be sealed in position by any suitable adherent agent.
  • These indicating lines may be arranged in any desired relation to each other, to show various angles of inclination of the device, such as 90, 60, 45 or 30 degrees, depending on the position of the bubble 21 when it is in alignment therewith, due to the angular 1 position of the tool.
  • the edge of the base plate 15 is provided with opposed pairs of centrally disposed indicating marks 23 and 24 at right angles to each other, to enable the operator to place the assembled device in proper centered relation with the hand tool 10 when attached thereto.
  • a contact plate 25 of generally rectangular shape to correspond with the base plate 15 has its lower face recessed at 26 to form a pair of opposed contact legs 27 and 2'7 along opposite sides of the contact plate for engagement either with a curved surface or planar surface of the tool on which the device is used.
  • the contact plate 25 has a plurality of spaced threaded apertures 28 for receiving adjusting screws consisting of a knurled member 29, a top member 30 and a threaded botton member 31. In the form shown herein, four such adjusting screws are used, adjacent the four corners of said contact plate, but manifestly three equi-spaced adjusting screws can be used, if desired.
  • Each bottom threaded member 31 engages a threaded aperture 28 and the top member 30 engages in a conical recess 32 in the bottom face of the base plate 15.
  • the knurled member 29 As the knurled member 29 is turned it will cause its screw to revolve and thereby raise or lower one corner of the base plate 15 to level the plate, and bring it into the most minute adjustment relative to the contact plate and the tool on which the device is mounted.
  • the upper rim of the knurled nut 29 is serrated at 33 so as to be brought into holding engagement with the lower face of the base plate 15, particularly when the latter is at an inclined angle to the contact plate 25.
  • a base plate In an attachment for tool handles, a base plate, a hollow spherical member of transparent material mounted on said base plate adapted to hold liquid with an air bubble therein, said spherical member having a plurality of lines thereon for indicating deviations of said spherical member from the vertical by reference to the air bubble in said spherical member, a flexible strap connected to said base plate at opposite sides of said spherical member for detachably securing said base plate on a tool handle, a contact plate mounted in generally parallel relation below said base plate, said contact plate having a pair of spaced legs projecting from its under face adapted for engagement with a rounded surface on a tool handle, and means for varying the relation between said base plate and contact plate comprising at least three screws with knurled adjusting nuts, each screw having one end threaded in said base plate, and the contact plate having registering recesses in which the other ends of said screws are engaged, and the base and contact plates being normally held in registering position with

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)

Description

Oct. 23, 1956 F. P. SAUER, JR
LEVELING DEVICE FOR HAND TOOL Filed July 19, 1955 IN V EN TOR.
FRED R SAUER JR.
PARKER & CARTER ATTORNEYS United States Patent LEVELlNG DEVICE FOR HAND TOOL Fretll. Sauer, Jr., Milwaukee, Wis.
Application July 19, 1955, Serial No. 522,957
1 Claim. (Cl. 33-207) My invention relates to leveling devices and more particularly to a leveling device applicable for attachment to any type of hand tool.
The object of my invention is to provide a device that is adaptable for any type of hand tool such as electrically operated or manually operated drills, saws,
reamers or the like, and to enable the operator to determine the angular relation of the tool to the workpiece during the operation.
Another object of my invention is to provide a device of the character described that may be attached as an accessory to the hand tool, or may be made a permanent part thereof.
Still another object of my invention is to provide a device of the character described that may be adjusted after mounting, to provide accuracy, thereby adding The device described and illustrated herein lends itself readily to be sold as an accessory adaptable for attachment in any convenient manner to the tool, and is designed to provide minute adjustment in its relation to the surface of the tool to which it is applied.
Other and further objects of my invention will become more apparent as the description proceeds when taken in conjunction with the drawings, in which:
Figure 1 is a perspective view showing the device covered by the invention, attached to a conventional electric drill.
Figure 2 is an enlarged perspective view of the assembled device constituting my invention.
Figure 3 is a perspective view of the spherical enclosure for the leveling unit, illustrating its construction to make it adaptable for engagement with the cylindrical adapter into which it is inserted.
Figure 4 is a top view of the assembled unit.
Figure 5 is a cross section of the entire assembled device taken on line 5-5 of Figure 4.
Figure 6 is an enlarged fragmentary detail cross section of the means for providing adjustment, comprising adjustment screw threadedly inserted into the base and extending into a conical recess in the bottom face of the adapter plate; and
Figure 7 is a view similar to Figure 6, but with the top surface of the turning knob of the adjustment screw serrated for contact with the bottom surface of the adapter plate.
Referring now to details of the embodiment of my invention shown in the drawings, 10 indicates a fanciful 2,767,483 Fatented Oct. 23, 1956 perspective view of an electric drill, on which the device of my invention shown as 11 is detachably mounted by means of a pliable strap 12, equipped with a buckle or fastening assembly 13.
The device constituting my invention consists of a receiver 14 herein shown as a circular container open at its top and bottom and formed integrally with a generally rectangular base plate 15. Said base plate has a pair of elongated slots 16 and 16' through opposite edges to accommodate a pliable band 12 extending therethrough. A hollow spherical liquid bubble enclosure 17 constructed of suitable transparent material has a cylindrical bottom extension 18, through which a central filling passage 19 extends. The outer peripheral surface; of. the extension 18 is shown with threads to aid in retaining the extension 18 in a fixed position in the receiver 14 when coated with a suitable adherent agent, as shown in Figure 5.
The spherical bubble enclosure 17 is filled with a liquid through the passage 19, after which said passage is closed by a plug 20 driven therein, which may be sealed in position by any suitable adherent agent. When the enclosure 17 is filled, sufficient space is left between the level of the liquid and the bottom of the plug 20 to provide an air bubble shown as 21, which acts as an indicating means in its relation to the indicating lines 22 on the outer surface of the bubble enclosure 17, when the device is in operation.
These indicating lines may be arranged in any desired relation to each other, to show various angles of inclination of the device, such as 90, 60, 45 or 30 degrees, depending on the position of the bubble 21 when it is in alignment therewith, due to the angular 1 position of the tool.
The edge of the base plate 15 is provided with opposed pairs of centrally disposed indicating marks 23 and 24 at right angles to each other, to enable the operator to place the assembled device in proper centered relation with the hand tool 10 when attached thereto.
A contact plate 25 of generally rectangular shape to correspond with the base plate 15 has its lower face recessed at 26 to form a pair of opposed contact legs 27 and 2'7 along opposite sides of the contact plate for engagement either with a curved surface or planar surface of the tool on which the device is used. The contact plate 25 has a plurality of spaced threaded apertures 28 for receiving adjusting screws consisting of a knurled member 29, a top member 30 and a threaded botton member 31. In the form shown herein, four such adjusting screws are used, adjacent the four corners of said contact plate, but manifestly three equi-spaced adjusting screws can be used, if desired.
Each bottom threaded member 31 engages a threaded aperture 28 and the top member 30 engages in a conical recess 32 in the bottom face of the base plate 15. As the knurled member 29 is turned it will cause its screw to revolve and thereby raise or lower one corner of the base plate 15 to level the plate, and bring it into the most minute adjustment relative to the contact plate and the tool on which the device is mounted.
In the form of adjusting screw shown in Figure 7, the upper rim of the knurled nut 29 is serrated at 33 so as to be brought into holding engagement with the lower face of the base plate 15, particularly when the latter is at an inclined angle to the contact plate 25.
Although I have shown and described certain embodiments of my invention, it will be understood that I do not wish to be limited to the exact construction shown and described but that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claim.
I claim:
In an attachment for tool handles, a base plate, a hollow spherical member of transparent material mounted on said base plate adapted to hold liquid with an air bubble therein, said spherical member having a plurality of lines thereon for indicating deviations of said spherical member from the vertical by reference to the air bubble in said spherical member, a flexible strap connected to said base plate at opposite sides of said spherical member for detachably securing said base plate on a tool handle, a contact plate mounted in generally parallel relation below said base plate, said contact plate having a pair of spaced legs projecting from its under face adapted for engagement with a rounded surface on a tool handle, and means for varying the relation between said base plate and contact plate comprising at least three screws with knurled adjusting nuts, each screw having one end threaded in said base plate, and the contact plate having registering recesses in which the other ends of said screws are engaged, and the base and contact plates being normally held in registering position with each other by the flexible strap when the assembled device is secured to a tool handle.
References Cited in the file of this patent UNITED STATES PATENTS 970,360 Whigham Sept. 13, 1910 1,640,020 Abrahamson Aug. 23, 1927 1,948,612 Bouchard Feb. 27, 1934 2,689,412 Young Sept. 21, 1954 FOREIGN PATENTS 116,166 Great Britain June 6, 1918 865,697 Germany Feb. 5, 1953
US522957A 1955-07-19 1955-07-19 Leveling device for hand tool Expired - Lifetime US2767483A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052036A (en) * 1958-09-15 1962-09-04 Raymond J Oliver Bubble type level for hand drill
US3383772A (en) * 1966-08-25 1968-05-21 Accurmatic Corp Rotational attitude indicator
US3486239A (en) * 1966-03-21 1969-12-30 De Forrest Boeder Combination level and compass
US4125944A (en) * 1976-08-10 1978-11-21 Philip Esposito Level for power hand drill
US4393599A (en) * 1980-09-02 1983-07-19 John W. Sterrenberg Leveling mechanisms for hand-held power drill
US4402141A (en) * 1980-09-02 1983-09-06 John W. Sterrenberg Leveling mechanisms for hand-held power drill
US4457078A (en) * 1981-12-09 1984-07-03 Suchy Adalbert W Leveling device for power tools
US4590681A (en) * 1984-01-02 1986-05-27 The State Of Israel, Atomic Energy Commission, Nuclear Research Center Negev Level based on moire effect with ambient light
US6526668B1 (en) * 1999-03-11 2003-03-04 Microtool, Inc. Electronic level
US6572073B2 (en) 1999-11-22 2003-06-03 Great Neck Saw Manufacturers, Inc. Vial and method of making same
US20040187330A1 (en) * 2003-03-28 2004-09-30 Seung-Jin Lim Level capable to measure minute inclination
WO2006097912A2 (en) * 2005-03-12 2006-09-21 Zion Nayim Level
US20070023063A1 (en) * 2005-07-27 2007-02-01 Sharon Deuel Comb with a ball level and indicia
US11602230B1 (en) * 2021-11-29 2023-03-14 Ronald Kevin Novak Method and system for gondola alignment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US970360A (en) * 1910-02-07 1910-09-13 William H Whigham Angle guide attachment for boring-tools.
GB116166A (en) * 1917-06-12 1918-06-06 Walter Taylor Improvements in Levels for Aircraft.
US1640020A (en) * 1927-01-03 1927-08-23 Abrahamson Gunwald Bit-brace head
US1948612A (en) * 1929-03-28 1934-02-27 Guy C Bouchard Inclinometer for airplanes
DE865697C (en) * 1942-08-09 1953-02-05 Ernst Koehnlein Alignment device for setting the drilling direction of electric hand drills
US2689412A (en) * 1951-10-01 1954-09-21 Joe B Elder Leveling and holding device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US970360A (en) * 1910-02-07 1910-09-13 William H Whigham Angle guide attachment for boring-tools.
GB116166A (en) * 1917-06-12 1918-06-06 Walter Taylor Improvements in Levels for Aircraft.
US1640020A (en) * 1927-01-03 1927-08-23 Abrahamson Gunwald Bit-brace head
US1948612A (en) * 1929-03-28 1934-02-27 Guy C Bouchard Inclinometer for airplanes
DE865697C (en) * 1942-08-09 1953-02-05 Ernst Koehnlein Alignment device for setting the drilling direction of electric hand drills
US2689412A (en) * 1951-10-01 1954-09-21 Joe B Elder Leveling and holding device

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052036A (en) * 1958-09-15 1962-09-04 Raymond J Oliver Bubble type level for hand drill
US3486239A (en) * 1966-03-21 1969-12-30 De Forrest Boeder Combination level and compass
US3383772A (en) * 1966-08-25 1968-05-21 Accurmatic Corp Rotational attitude indicator
US4125944A (en) * 1976-08-10 1978-11-21 Philip Esposito Level for power hand drill
US4393599A (en) * 1980-09-02 1983-07-19 John W. Sterrenberg Leveling mechanisms for hand-held power drill
US4402141A (en) * 1980-09-02 1983-09-06 John W. Sterrenberg Leveling mechanisms for hand-held power drill
US4457078A (en) * 1981-12-09 1984-07-03 Suchy Adalbert W Leveling device for power tools
US4590681A (en) * 1984-01-02 1986-05-27 The State Of Israel, Atomic Energy Commission, Nuclear Research Center Negev Level based on moire effect with ambient light
US6526668B1 (en) * 1999-03-11 2003-03-04 Microtool, Inc. Electronic level
US6572073B2 (en) 1999-11-22 2003-06-03 Great Neck Saw Manufacturers, Inc. Vial and method of making same
US6735880B1 (en) 1999-11-22 2004-05-18 Great Neck Saw Manufacturers, Inc. Vial and method of making same
US20040143980A1 (en) * 1999-11-22 2004-07-29 Great Neck Saw Manufacturers, Inc. Vial and method of making same
US6912793B2 (en) 1999-11-22 2005-07-05 Great Neck Saw Manufacturers, Inc. Vial and method of making same
US20040187330A1 (en) * 2003-03-28 2004-09-30 Seung-Jin Lim Level capable to measure minute inclination
US6901671B2 (en) * 2003-03-28 2005-06-07 Seung-Jin Lim Level capable to measure minute inclination
WO2006097912A2 (en) * 2005-03-12 2006-09-21 Zion Nayim Level
WO2006097912A3 (en) * 2005-03-12 2006-12-14 Zion Nayim Level
US20070023063A1 (en) * 2005-07-27 2007-02-01 Sharon Deuel Comb with a ball level and indicia
US11602230B1 (en) * 2021-11-29 2023-03-14 Ronald Kevin Novak Method and system for gondola alignment

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