US3766659A - Support device for plumb-line - Google Patents

Support device for plumb-line Download PDF

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Publication number
US3766659A
US3766659A US00094929A US3766659DA US3766659A US 3766659 A US3766659 A US 3766659A US 00094929 A US00094929 A US 00094929A US 3766659D A US3766659D A US 3766659DA US 3766659 A US3766659 A US 3766659A
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US
United States
Prior art keywords
plumb
casing
bob
line
chamber
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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US00094929A
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English (en)
Inventor
A Quenot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MFG QUENOT MABO Sarl
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MFG QUENOT MABO Sarl
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/10—Plumb lines

Definitions

  • ABSTRACT [52] US. Cl. 33/392 A device for checking the verticality of a surface in- [51] 9 15/ cludes a plumb-bob attached to one end of a plumb- [58] Field of Search 33/216, 2l7, 85 line, th opposite end of the plumb-line being attached /210 to a case.
  • the case has a through bore for the passage v of the plumb-line and an external surface of the [56]
  • References Cited plumb-line is adapted to support the plumb-line UNITED STATES PATENTS wound on said external surface when the device is not 1,745,027 1 1930 Oxford 33 216 2,499,722 3 1950 Chesbro 33 217 2,491,334 12/1949 Reeves 33/216 5 Claims, 3 Drawing Figures PATENTED UN 2 3 I975 FIG. 2
  • This invention relates to devices for checking the verticality of surfaces and in particular to devices including plumb-lines.
  • Devices which include a casing for engaging a surface whose verticality is to be checked.
  • the casing is a simple metallic plate having a central orifice which guides a plumb-line depending therefrom.
  • the mason or user winds the plumb-line, for example, around his hand, in a braid which he must unwind for the next checking operation.
  • the user applies a bearing surface of the casing against the upper brick or agglomerate and checks the verticality of the wall by seeing if a plumb-bob attached to the bottom end of the plumb-line is in contact against the lower brick and afterwards if there is an equal distance between the plumb-line and each of the superposed bricks.
  • a devicefo checking verticality is disclosed -in which a casing ineludes an important bearing surface and a spirit level positioned on the case in a perpendicular direction to the bearing surface in order to check the verticality of the element of the surface against which the casing engages during its use.
  • the case includes linewinding means constituted by a drum operated by a crank.
  • This known device having the plumb-line inside the case has many drawbacks. For example, it is slow to use, is a complicated mechanism, and is relatively easily damaged.
  • An object of the present invention is to provide a device for checking the verticality of surfaces and which is light, simple to use, has a sturdy construction suitable for building sites and which allows the winding of the plumb-line in an easy manner so as to avoid any tangles in the line.
  • a device for'checking the verticality of a surface comprising a plumb-bob attached to one end of a plumb-line, the opposite end of the plumb-line being attached to a case, the case having a through bore for the passage of the plumb-line through the case, a portion of the external surface of the case being adapted to support the plumbline DESCRIPTION OF THE FIGURES
  • FIG. 1 is an elevational view of a device for checking the verticality of a surface
  • FIG. 2 is a plan view of the device of FIG. 1;
  • FIG. 3 is an elevation of another embodiment of a device for checking the verticality of a surface according to the invention.
  • a device for checking the verticality of a surface comprises a case 1, for example, of a prismatic shape having a large planar bearing surface 2 for engaging and abutting against a surface of a wall whose verticality is to be checked, and an upper surface 3 perpendicular to the surface 2.
  • a plumb-line 4 is connected at one end to the case and by the opposite end to a metallic plumb-bob 5 of any prismatic or circular shape.
  • the transverse dimension or width of the plumb-bob 5 is arranged so that the distance from the center line to the outside periphery of the plumbbob is equal to the distance between the centre line and the outside periphery of the case.
  • the case has a central through bore or opening 6 for the passage of the plumb-line 4 therethrough.
  • the case is hollow and defines a chamber 7 open at one end for receiving the plumb-bob 5 when the device is not being used.
  • the plumb-bob 5 In its nonworking state, the plumb-bob 5 is received in the chamber 7 while the plumb-line 4 extends through the bore 6 outwardly from the surface 3 and is held in a notch 8 and then wound around the case which acts as a spool for the plumb-line 4 (as seen in FIG. 1).
  • a set of angularly arranged recesses 9 and 10 are pro vided around the case as shown inFIG. '1 around which the plumb-line 4 can be wound.
  • the end of the wound plumb-line 4 can be maintained in a notch 11 symmetricallypositioned with respect to notch 8.
  • the plumb-line 4 is freed from the notch 11 and unwound from the outer surface of the case and then the line is freed from the notch 8 in order to permit the line to pass through the orifice 6 and depend from the case.
  • the distance of the plumb-bob 5 from the case is then adjusted and the line is then maintained by wedging in a notch 18 provided in the lower part of the case on the opposite face to that of the support face in order not to unbalance the device.
  • the distance between the centre of the plumb-bob and its external periphery and the centre of the case and its periphery is equal to L.
  • this distance L In order to check the verticality of a surface this distance L must be constant between the surface and the plumbline 4.
  • a spirit level 17 is shown in FIG. 2 on the surface 3 which is perpendicular to the bearing surface 2 and this spirit level enablesthe verticality of a particular element on which the bearing surface engages to be checked.
  • Magnetic means for example, a magnetic sole 15 are provided for attaching the'device to a ferrous metal.
  • the case can also be provided with means, for example, hole 16 for receiving the shank of a nail or screw.
  • a device for checking the verticality of a surface is similar to that disclosed and described with respect to FIGS. 1 and 2 but the case has a circular section 1 rims 12 and 13 and a portion having a frustoconical surface which acts as a winding spool for the plumb-line 4 the set of recesses in this embodiment comprising the one recess defined as the frusto-conical surface between the rims 12 and 13A.
  • a device for checking the verticality of a surface comprising; a plumb-bob having a maximum transverse width; a casing having an external bearing surface portion abuttable against a planar surface whose verticality is to be checked during use of the device and having means therein defining an open-ended chamber configured to receive therein said plumb-bob during nonuse of the device; means defining an opening extending through said casing a predeterminednormal distance away from said external bearing surface portion equal to one-half said maximum transverse width and aligned with the center of said plumb-bob both during use of the device and during nonuse of the device when said plumb-bob is received within said chamber and extending through said casing into said chamber at a location opposite the open end of said chamber; a plumb-line slidably extending through said opening end connected at one end to said plumb-bob and connected at the other end to said casing; and means on the exterior of said casing for receiving therearound in a wound condition said plumb-line when said plumb-bob is received within said chamber
  • a device including means defining a notch in said casing dimensioned to receive therein and releasably engage with said plumb-line.
  • a device according to claim 1; wherein said openended chamber has a truncated cone configuration with said opening extending through the smaller end of the cone and the larger end of the cone being open; and wherein said plumb-bob has a complementary truncated cone configuration.
  • a device including magnetic means on said external bearing surface portion for magnetically attaching the device to a magnetic surface.
  • a device including levelindicating means mounted on said casing operative to indicate when the device is level with the plane of the horizon.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Supports For Plants (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US00094929A 1969-12-04 1970-12-03 Support device for plumb-line Expired - Lifetime US3766659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6941884A FR2070425A5 (enrdf_load_stackoverflow) 1969-12-04 1969-12-04

Publications (1)

Publication Number Publication Date
US3766659A true US3766659A (en) 1973-10-23

Family

ID=9044081

Family Applications (1)

Application Number Title Priority Date Filing Date
US00094929A Expired - Lifetime US3766659A (en) 1969-12-04 1970-12-03 Support device for plumb-line

Country Status (5)

Country Link
US (1) US3766659A (enrdf_load_stackoverflow)
CH (1) CH529333A (enrdf_load_stackoverflow)
ES (1) ES163986Y (enrdf_load_stackoverflow)
FR (1) FR2070425A5 (enrdf_load_stackoverflow)
GB (1) GB1311150A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300290A (en) * 1979-01-09 1981-11-17 Leon Zalewski Vertical sight adjuster
USD263032S (en) 1979-07-26 1982-02-16 Amos Burl O Plumb bob supporting vertical alignment gauge or the like
US5163230A (en) * 1992-01-13 1992-11-17 Gast Raymond A Chalk line apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US19817A (en) * 1858-03-30 Tx a nmf wt
US831104A (en) * 1905-06-19 1906-09-18 Sydney Roberts Combination-tool for bricklaying.
US1060855A (en) * 1911-10-12 1913-05-06 Ellis E Pipher Plumb-bob.
US1745027A (en) * 1927-09-23 1930-01-28 John T Oxford Plumb bob
US2491334A (en) * 1946-08-29 1949-12-13 Florence Stove Co Level position indicator for oil stoves
US2499722A (en) * 1946-10-03 1950-03-07 James C Chesbro Plumb bob, line, and winding spool
NL6501601A (enrdf_load_stackoverflow) * 1964-02-14 1965-08-16

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US19817A (en) * 1858-03-30 Tx a nmf wt
US831104A (en) * 1905-06-19 1906-09-18 Sydney Roberts Combination-tool for bricklaying.
US1060855A (en) * 1911-10-12 1913-05-06 Ellis E Pipher Plumb-bob.
US1745027A (en) * 1927-09-23 1930-01-28 John T Oxford Plumb bob
US2491334A (en) * 1946-08-29 1949-12-13 Florence Stove Co Level position indicator for oil stoves
US2499722A (en) * 1946-10-03 1950-03-07 James C Chesbro Plumb bob, line, and winding spool
NL6501601A (enrdf_load_stackoverflow) * 1964-02-14 1965-08-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300290A (en) * 1979-01-09 1981-11-17 Leon Zalewski Vertical sight adjuster
USD263032S (en) 1979-07-26 1982-02-16 Amos Burl O Plumb bob supporting vertical alignment gauge or the like
US5163230A (en) * 1992-01-13 1992-11-17 Gast Raymond A Chalk line apparatus

Also Published As

Publication number Publication date
FR2070425A5 (enrdf_load_stackoverflow) 1971-09-10
CH529333A (fr) 1972-10-15
DE2058168A1 (de) 1971-06-09
ES163986U (es) 1971-03-16
DE2058168B2 (de) 1976-01-29
GB1311150A (en) 1973-03-21
ES163986Y (es) 1971-09-01

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