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Publication numberUS1777429 A
Publication typeGrant
Publication dateOct 7, 1930
Filing dateDec 8, 1926
Priority dateDec 8, 1926
Publication numberUS 1777429 A, US 1777429A, US-A-1777429, US1777429 A, US1777429A
InventorsRichard C Charlton
Original AssigneeHenry Disston & Sons Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1777429 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Oct. 7, 1930. R. c. cHARLTN I 1.777,429


The object of my invention is to make a level of metal, especially alnminnm, so that it will be light in weight and yet substantial, and in which the space within the frame is open with exception at the points where the spirit glass holders are located. The invention also relates to certain details of construction hereinafter described.`

In the accompanying drawings:

Fig. 1 is a side view of my improvecl level;

Fig'. 2 is a transverse sectional view on the line 2-2, Fig. 1;

Fig. 3 is a transverse sectional view on the '1 line 3-3, Fig. 1; Fig. 4 is a transverse sectional view on the line H, Fig. 1; p

Fig. 5 is a detached perspective view of one of the end conneeting members;

Fig. 6 is a detached perspective view of one of the spirit glass holders;

Fig'. 7 is a detached view of one of the longitndinal side frames of the level; and

Fig. 8 is a detached perspective view of onehalf of a spirit glass holder.

The two longitudinal members 5-5 of the frame are T-shaped in cross-section and are connected together at their ends by members 6-6 of the shape shown in F ig. 5. Each of the end members has a channel portion 7 connected by a web-8 and a flange 9 the same width as the longitudinal members 5.

The web portion 10 of the sections 5 extend into the Channels of the portion 6 and through the flanged portion 9 thereof, while the bodies of the longitndinal members 5 eX- tend over the flange 9 so as to provide unbroken leveling snrfaces thronghout the length of the level.

The end members are connected to the longitudinal members by screws or rivets 11 which pass through the channeled portions and into the webs as shown in Fig. 2.

The spirit tube holders are made as shown in Fig's. 3 and 6. Each holder 12 is made in two Sections 13-13, which are shaped to fit the webs 10 of the longitudinal members as shown in Fig. 8, and are secnred thereto by transverse screws 14 or other fastening means.

Each section 13 has a deep circular fiange 50 15, and located within the fiange is a sightglass 16 held by a ring 17 secnred to the flange of the holder in any suitable manner.`

Each section has reeessed projections 19 for the reception of spirit tnbes 18.

The ends of the tnbes are embedded in plaster of Paris located in recesses of the projections 19 of the Sections of the holder. The

`zrojections 19 of one section overlap those of the other section, as shown in Fig. 3, so that the tubes are on the same line.

n the central holder are two spirit tnbes in the present instance, arranged longitndinally of the level, and in each end holder are two spirit tnbes arranged transversely. The middle tubes are level tubes while the end tnbes are plnmb tnbes. While two tnbes are shown, the holders may be provided with single tnbes. The level may be provided with level tnbes only, or with plumb tubes only, as desired.

The entire level is preferably made of alnminum. The tnbe holders are formed of pressed or cast aluminnm alloy, and the frame may be of extrnded, alnminnm alloy.

In some instances the tube-holders may be made in a single piece in place of the two Sections shown.

I claim 1. The combination in a level, of an open frame consisting of longitndinal members T- shaped in cross-section; end members having a fiange, a web, and'enlarged channeled portions` the foot of the T of each of the longitndinal members being secnred in the Channels of the channeled portions of the end members; and a spirit tube holder located between the two longitndinal members and secnred thereto.

2. The combination in a level of an open frame, made of two metallic longitndinal members T-shaped in cross section and end -1nembers, each end member being channeled to receive the webs of the longitndinal members and having' a lange of the same width as the longitndin al members, and a spirit tube holder secnred directly to the webs of the longitudinal members and forming the sole connection between the two longitndinal members at a point between the end members.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2502235 *Jun 8, 1946Mar 28, 1950John SchultesSpirit level
US2536788 *Apr 24, 1946Jan 2, 1951Vaida Theodore FLevel vial mounting
US2637912 *Mar 5, 1951May 12, 1953Baldwin William GSpirit plumbing tool and level
US2750678 *Sep 25, 1952Jun 19, 1956Ziemann Harry JSpirit level
US2810206 *Sep 15, 1955Oct 22, 1957Ziemann Harry JSpirit level
US4463501 *Sep 30, 1982Aug 7, 1984Empire Level Mfg. Corp.Level construction and methods of constructing a level
US4503623 *Dec 14, 1979Mar 12, 1985Gould Jr EdwardLevel
US4581828 *May 29, 1985Apr 15, 1986Hirsh CompanySpirit level
US4685219 *Aug 12, 1985Aug 11, 1987Macklanburg-Duncan CompanySpirit level
US5709034 *Feb 29, 1996Jan 20, 1998Kapro Industries Ltd.Spirit level
US6449859Apr 28, 1998Sep 17, 2002Kapro Industries Ltd.Spirit level
US6748666Jul 24, 2002Jun 15, 2004Kapro Industries Ltd.Spirit level
US6836973 *Apr 24, 2003Jan 4, 2005Eccles Jr ThomasVersa level
US6990742Apr 22, 2004Jan 31, 2006Great Neck Saw Manufacturers, Inc.Wave level
US7117608 *Mar 2, 2004Oct 10, 2006Kapro Industries Ltd.Spirit level
US7513056 *Nov 1, 2007Apr 7, 2009Black & Decker Inc.Spirit level with sliding measurement system
US20040250433 *Mar 2, 2004Dec 16, 2004Kapro Industries Ltd.Spirit level
USD730207Sep 5, 2014May 26, 2015Kapro Industries Ltd.Spirit level
USD750984Sep 30, 2014Mar 8, 2016Kapro Industries Ltd.Box spirit level with ruler
U.S. Classification33/381
International ClassificationG01C9/28
Cooperative ClassificationG01C9/28
European ClassificationG01C9/28