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Publication numberUS1205946 A
Publication typeGrant
Publication dateNov 21, 1916
Filing dateApr 16, 1915
Priority dateApr 16, 1915
Publication numberUS 1205946 A, US 1205946A, US-A-1205946, US1205946 A, US1205946A
InventorsGeorge W Lyons
Original AssigneeAbraham L Notkins, James A Notkins, Matthew A Notkins, George W Lyons
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1205946 A
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Description  (OCR text may contain errors)




Patented Nov, 21, 1916.

I]? oenzor Tfz'tnesses STAT AEN oriucE.




Application filed April 16, 1915.

To all whom it may concern:

Be it known that I, GEORGE IV. LYONS, a citizen of the United States, residing at Orange, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Levels, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to a new and improved level, having for its object, among other things, to so construct the same that it may be collapsible and occupy the minimum space when not in use.

To these, and other ends, my invention consists in the level, having certain details of construction and combinations of parts, as will be hereinafter described and more particularly pointed out in the claim.

Referring to the drawings, in which like numerals of reference designate like parts in the several figures, Figure l is a perspective view of my improved level complete; Fig. 2 is an enlarged fragmentary View thereof; and Fig. 3 is an end view of the central section.

My improved level is constructed with three sections 1 and 2-2, all of which are provided with end caps-3 to minimize the wear thereon. The section 1 is provided with a spirit level 4 and sections 2 with spirit levels 5, all being of the ordinary constructien and mounted within apertures 6 as is customary.

Extending loosely through an aperture in the section 1 is a tie bar 7 terminating at each end in a threaded shank 8 which rojects beyond the end caps 3 and upon wfiich are the nuts 9 and washers 10. Also fixed in the opposite ends of the section 1, and projecting beyond the caps 3, are the dowel pins 11, which project into blocks 12 fixed in the sections 2-2. These dowel pins when they register with the opening in the blocks 12, as shown in Fig. 2, insure the proper alinement of the sections, which are then secured together by the washers 10 and nuts 9, which latter are threaded upon the shanks through the openings 13.

.In operation the sections are assembled Specification of Letters Patent.

Patented Nov. 21, 1916.

Serial No. 21,808.

by passing the shank 8 of the tie bar 7 through the end of the section 2 and permitting the dowel pins 11 to enter the blocks 12, afterward placing the washer 10 and nut 9 upon the shank and tightening the latter by a wrench that operates within the opening 13. WVhen the sections are secured in this manner they all become a unitary structure and are capable of use as is the usual level. The level is taken down, for convenience in transportation or for other reasons, by separating the sections 2 from the section 1, thus materially shortening the length of the level and the space that it would otherwise occupy.

In minor details my invention may be considerably modified, and I would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that falls fairly within the spirit and scope of my invention, as set forth in the appended claim.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is

In a level, the combination with a central section, having a longitudinal aperture therethrough; of a member, substantially rectangular in cross section, within said aperture, and by its engagement therewith held against rotation, said member having a threaded shank at each end which projects beyond the ends of said section; a dowel pin fixed in each end of said section and projecting outwardly therefrom; companion end sections, each having a transverse open- Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2673399 *Sep 8, 1952Mar 30, 1954Raeder Nathaniel FSectional scale
US5577327 *Nov 14, 1995Nov 26, 1996Archambault; Roland A.Adjustable length level device with internal locking mechanism
US5819427 *Mar 14, 1997Oct 13, 1998Rohweder; Barry L.Carpenter's pull-apart framing square
US7805850 *Nov 3, 2006Oct 5, 2010Design To Manufacturing, Inc.Extendable edge reference tool
US8261459 *Oct 4, 2010Sep 11, 2012D2M International Pty Ltd.Extendable edge reference tool
US20110016735 *Oct 4, 2010Jan 27, 2011Edward CooperExtendable edge reference tool
U.S. Classification33/376
Cooperative ClassificationG01C9/24