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Publication numberUS1683121 A
Publication typeGrant
Publication dateSep 4, 1928
Filing dateMay 1, 1926
Priority dateMay 1, 1926
Publication numberUS 1683121 A, US 1683121A, US-A-1683121, US1683121 A, US1683121A
InventorsLeon F N Baldwin
Original AssigneeBenjamin S Clark
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Line marker for roadbeds
US 1683121 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Sept. 4, 1928. 1,683,121 7 L. F. N. BALDWIN LINE MARKER FOR ROADBEDS Fil ed May 1, 1926 A TTORNEYS.

Patented Sept. 4, 1928. I




7 Application filed May 1,

This invention relates to an improved line marker for roadbeds, and has for its object to provide a marker of this character formed of a series of lates which may be set into roadbeds of different constructions such as asphalt, concrete, macadam, and the like for the purpose of marking safety zones and directing traflic thereover.

A further object of the invention is to provide this marker with a series of corrosionresisting plates adapted to be readily connected together end to end and set into the roadbed.

A still further object of the invention is the provision of head and socket joint memhas on these plates whereby they may be readily connected end to end toform a bendable strip to be set in a straight line or bent in a curve in either direction. 7

The invention further consists in the provision of side flanges on the plates preferably set on an outwardly-inclined angle from the plane of the plate whereby when the plate is set into the roadbed it is dovetailed or locked therein.

With these and other objectsin view, the invention consists of certain novel features of construction as will be more fully described, and particularly pointed out in the appended claims. I

In the accompanying drawings:

Figure 1 is a view illustrating a series of my improved plates connected together end to end and set to form a curve.

Figure 2 is an enlarged face view of one of the plates showing the rounded head at one end, and a'socket on the opposite end of the plate.

Flgure 3 is a section on line 33 of Figure 2, illustrating the flanges on the bottom of the plate also illustrating the fastening bolt and the nut as set into the roadbed for assistin in securing the marker plate in posithis character have been accomplished by 1926. Serial No. 106,105.

by reflecting the lights of a vehicle. Then again, by employing this metal the same is kept bright by abrasion due to tires traveling over the same; also it is found in practice of advantage to form such a marker of a series of plates and so construct these plates that they may be flexibly locked together end to end in such a Way that they may be caused to to take a curve in either direction as well as to lie in a straight line; and the following is a detailed description of the resent embodiment of my invention and s owing one construction of line marker for roadbeds by which these advantageous results may be accomplished With reference to the drawings, 10 designates one of the plates of a series of my 1mproved line marker, the same being elongated and having a rounded head shaped extension 11 at one end and a correspondingly-shaped socket 12 at its opposite end to receive the head of the next ad acent plate,.the end portions of the plates being cut away on anangle to permit the plates being set out of alignment with each other to follow a bend in the road when desired. c

The face 13 of the plate is preferably slightly oval, as shown in Figure 3, the same being provided with holes 14, through which lockmg bolts 15 may extend preferably into an expanding nut 16 which may be set into the roadbed 17 In some instances, I form side flanges or ribs 18 along the opposite side of this plate and referably set these flanges on a downward ly and outwardly extending angle from the plane of the plate, whereby when set into the roadbed, they are dovetailed therein and serve to securely lock the plate in the road bed.

In other instances, I provide intermediate lon 'tudinal strengthenin ribs 19 and again provide bosses 20 t rough which the bolts 15 extend.

In order to prevent horses from slipping 'imbedding the angularly-dispose the adjacent plateby means of which these two plates are securel locked together end to end at, the same time are permitted to bend around a curve; also when the plates are set in position in the roadbed the surface 22 of the bed is brought substantially flush with the edge 23 of the (plates thus flanges 18 therein to securely lock the plate in position in the roadbed.

My improved line marker is very simple and practical in construction, inexpensive to produce and is very efiective in its 0 ration and may be readily set into a roa d in either a straight line or to conform to an desired curve. v

e foregoing description is directed soletowards the construction illustrated, but

l desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to.which the device is' susce tible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. A line marlrer for a roadbed compris- 3" ing a series of plates, each plate having a rounded head atone end and provided with a' circular socket at its other end to receive and retain the head of the next adjacent plate by which said plates are flexibly connected end to end.

8. A line marker for a roadbed comprising aseries of plates, each plate having a rounded head at one end and provided with a circular socket at its other end to receive and retain the head of the next adjacent plate by which said plates are flexibly connected end to end, and means for locking said lates to the roadbed comprising a rearwar y extending flange along the opposite edges "of the plates set on an incline to the laneof the plate whereby it is dovetailed mto the roadbed.

In testimony whereof I aflix m signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2931279 *Mar 11, 1954Apr 5, 1960Grant A WiswellTraffic center line method and apparatus
US3091996 *Oct 28, 1959Jun 4, 1963Garringtons LtdMarkers for roads
US3373668 *Dec 15, 1965Mar 19, 1968Edward SteffanInterlocking structures for edging, paving, or the like
US4500225 *Apr 18, 1983Feb 19, 1985Quicksteel Engineering Pty. Ltd.Transferable roadway lane divider
US4624601 *Jul 23, 1984Nov 25, 1986Quick-Steel Engineering Pty LimitedTransferable roadway lane divider
US5046884 *Jan 17, 1989Sep 10, 1991Marino GirottiRoadway traffic barriers
US5080523 *Mar 8, 1991Jan 14, 1992Waldormills Company EstablishmentConnecting stone for forming road edges
US5104255 *Jul 6, 1990Apr 14, 1992Bodensohn Karl HBarriers for lane dividers, curbs or construction sites
US5513924 *May 31, 1994May 7, 1996National Road Studs CompanyMovement resistant retroreflective pavement marker
US5630676 *May 17, 1995May 20, 1997Junker; WilhelmMarker bump for placement on traffic lane
US20090304444 *May 27, 2009Dec 10, 2009Pretola AlejandroSignaling Point Module For Use On The Road Surface
US20110164922 *Jan 5, 2010Jul 7, 2011David Michael MoxlowRoadway marker and reflector guard
WO2000012822A1 *Aug 28, 1998Mar 9, 2000Tricor Direct, Inc.Speed bump
WO2005059257A1 *Mar 5, 2004Jun 30, 2005Calero Menendez German MauriciRemovable and reusable structural aluminum reflective road marker
U.S. Classification404/13, D10/113.1
International ClassificationE01F9/08
Cooperative ClassificationE01F9/083
European ClassificationE01F9/08C