That portion of the cord which is not required for the support of plumb bob I I is simply Wound on the adjuster or reel between the plates I8 and I 9 and about the hub 2I in the manner clearly illustrated in Figures 2, 3 and 4.įor purposes of explanation the upwardly extending run of cord I4 from the adjuster will be identified by the reference character I4a and the return downward run by the reference character leb. To secure the end of the cord hub 2| is formed with a transverse bore 22 through which the cord I4 is extended to be knotted at its end. The adjuster body forms a suitable reel upon which the cord I d can be wound. which, as illustrated in Figures 3 and 4,: is I-I sectioned both transversely and longitudinally, beine termed 0f parallel elongated sides I8 and i9 connected by a central elongated hub 2I oi lesser length.` As is seen clearly in Figures `2 and 4, the thickness and length of hub 2l: is less than the length and width oil sidel walls I8 and L9 so that a continuous channel is formed around the hub and between side plates I8 and I9. isv not a part of the inventipn and may comprisel a., wire or a survey-s ing nstrument.l The Opposite end, of the cord I4 is attached to. isl to be understood, however, that the support. I I by extending upwardly andr over a* suitable support which in the drawingY in Figure 1 is shown as a conventional hook. I3 in which one end of a cord Ill extends, bei-ngy iixed therein as by having its end knotted. at its upper enlarged end with a longitudinally extending neck` portion l2 removably seating an interiorly threaded cap. It comprises a conical body pointed at its lower end and formed. Referring again tothe drawing, a plumb bob of conventional shape and Size is illustratedv and is indicated generally bythe reference character It. Y10S- TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS.Y10- TECHNICAL SUBJECTS COVERED BY FORMER USPC.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 AND DIGESTS.G01C15/00- Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00.G01C- MEASURING DISTANCES, LEVELS OR BEARINGS SURVEYING NAVIGATION GYROSCOPIC INSTRUMENTS PHOTOGRAMMETRY OR VIDEOGRAMMETRY.230000018109 developmental process Effects 0.000 description 2.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by LEWIS B KINGSLEY filed Critical LEWIS B KINGSLEY Priority to US298960A priority Critical patent/US2683937A/en Application granted granted Critical Publication of US2683937A publication Critical patent/US2683937A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee LEWIS B KINGSLEY Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US298960A Inventor Criswell Ralph Elton Current Assignee (The listed assignees may be inaccurate. Google Patents US2683937A - Plumb bob adjusterÄownload PDF Info Publication number US2683937A US2683937A US298960A US29896052A US2683937A US 2683937 A US2683937 A US 2683937A US 298960 A US298960 A US 298960A US 29896052 A US29896052 A US 29896052A US 2683937 A US2683937 A US 2683937A Authority US United States Prior art keywords cord adjuster plumb bob seats plumb Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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