US1822916A - Marker for pavements - Google Patents

Description

Sept. 15, 1931. WOODS 1,822,916-

MARKER FOR PAVEMENTS Filed Sept. 12, 1950 I'JG 1. 21 2 1 INVENTOR P atent ecl Sept. 15, 1931 UNITED STATES LEONARD G. WOODS, OF PITTSBURGH, PENNSYLVANIA MARKER FOR PAVEMENTS Application filed September 12, 1930. Serial No. 481,435.

My invention relates to improvements in markers for pavements, and consists in a marker such in structure as to be capable of application to a pavement already laid, and

L durable in such application. Metallic plates with rounded edges, standing above the general level of the pavement, are now commonly employed upon roadways, to indicate paths of traflic; but heretofore it has been a matter of difliculty to find a marker which, being applied to a pavement already laid and hardened, will hold its place under the strains of service.

The marker of my invention is illustrated in the accompanying drawings. Fig. 1 is a view in vertical section of the marker in place in a pavement; Fig. 2 is a view in plan from beneath of the assembled marker; Fig. 3 is a view in perspective of the anchor member of go the marker with its securing devices; and Fig. 4 is a view in plan from beneath of the cap member which, being applied to the anchor member, completes the structure. The plane of section of Fig. 1 is indicated by the line II, Fig. 2.

The anchor member 1 is essentially a disk, adapted to lie flat on the surface of a pavement. In it are formed openings through which pins, here shown in the form of nails 11 may extend; flaring downward, as shown, by which pins the anchor member is secured in its place on the surface of a pavement. Ordinarily, the pins will be driven to place; but manifestly they may be set in holes drilled in the pavement to receive them.

The drawings show four pins 11, provided to secure the anchor member; in any case there will be a plurality of pins, and pref-.

erably there will be at least three of them.

Their engagement at their upper ends with the anchor member, together with their spread downward, makes them effective in the assembly, to hold the anchorage in place against strains tending to dislodge it. Nails being employed, and the anchorage being provided, as the drawings specifically show,

with diverging holes of proper size, the heads of the nails, engaging the rims of the holes, make the assembly more secure.

The cap member 2 is adapted to be removably secured to the anchor member 1, and, after the anchor member has been placed and secured to the pavement, the cap member, being applied, affords the ultimate surface of the marker, suitable in shape and in appearance to serve the ends in view, and is effective to lntegrate the whole, so that it shall not be dislodged by strains of service.

The cap member 2 makes screw-threaded engagement with the anchor member 1. To that end the cap member is provided beneath wlth an essentially cylindrical recess 21 of proper size to receive the disk-shaped anchor member 1, and these two parts are provided with the interengaging screw parts 12 and 22. These parts are interrupted in circumferential extent, to the end that assem bly may be made readily and effectively. The thread parts 12 upon the anchor member 1 are mere outstanding blocks or lugs, whose nether surfaces stand spaced at an interval from the plane of the nether surface of the member as a whole, and whose nether surfaces may be oblique to the plane of the nether surface as a whole; and the thread parts 22 upon the cap member are, as best shown in Figs. 2 and 4, portions of a ledge, interrupted with breaks of suiiicient width to permit the passage of the blocks 12. The upper surfaces of the parts 22 which form the discontinuous ledge are oblique to the plane of the lower face of the cap member. In consequence of such shaping, the two members shown severally in Figs. 8 and 4 may be brought to position merely by applying the cap to the anchorage, allowing blocks 12 to pass through the spaces between the ledge parts 22, and then turning the cap member upon the anchorage. The assembly so effected is shown in Figs. 1 and 2. Such a screw joint with interrupted threads is com monly called a bayonet joint.

The cap member, when applied, overlies the upper ends of the pins 11, and, being locked by the screw lock described, prevents 9.3 the recession of the pins 11 from their extended positions. The anchor member may advantageously be countersunk in its upper surface, as appears very clearly in Fig. 3, l and from such countersunk recess the pin 10( holes may radiate downward. The bottom of the cylindrical recess in the cap member Will in the assembly come to approximate abutment upon the upper ends of the placed pins 11 as is best shown in Fig. 1.

The materials of which the members severally are formed will be chosen to suit the need. For example, the anchor member 1 may be a steel'casting; the pins 11 may be of hard steel; and the cap member 2 will be of a material to endure service and yet to be permanently conspicuous. It may be formed of hard aluminum, for example, or of brass, or of other metal which in such service will afford a permanently bright appearance.

The cap member 2 may be provided with notches 23 to receive the teeth of a spanner, by which the cap may be screwed to place.

I claim as my invention:

1. A marker for pavements including an anchor member, a plurality of pins adapted to be extended from the anchor member and into the substance of a pavement upon which the anchor member may be placed, and a cap member adapted to be applied to and secured in place upon said anchor member and when so applied and secured constituting a lock against withdrawal of said pins.

2. A marker for pavements including a disk-shaped anchor member provided with perforations and with peripherally outstanding blocks, a plurality of pins adapted to pass through the perforations in the anchor member and to extend in radiating directions into the substance of a pavement to which the anchor member may be applied, and a cap member provided with a cylindrical recess provided with an interrupted ledge, adapted to be applied to the anchor member, the said blocks upon the anchor member and the ledge upon the cap member being adapted in cooperation to constitute a bayonet joint between the members.

In testimony whereof I have hereunto set my hand.

LEONARD G. WOODS.

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