US2052465A

US2052465A - Cover structure

Info

Publication number: US2052465A
Application number: US26838A
Authority: US
Inventors: Jr Fred E Hardy
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-06-15
Filing date: 1935-06-15
Publication date: 1936-08-25
Anticipated expiration: 1953-08-25

Description

Aug. 25, 1936. A D JR 2,052,465

COVER STRUCTURE Filed June 15, 1935 Patented Aug. 25, 1936 rarest bi -i=1 C E "2,052 365 comma s'rnuo'nmm i rea iilinaruy, Ji-l;"Ironton,'Dhio V V inmicsueninne 15, 1935, ;Serial-3N0. i26838 "il'l lClaix'us. (otter-ea) :Thisinventiondsa hinge for .:ooversofi meter casings, man= holes,"- an'd sinii-laristruotures.

One of the obj ects: of the invention is to provide: a hinge off-the 'charaeter:=meiitioned-, so constructed that' the'parts may not='=-be disengaged unless the cover -is moved tosan extremely abnormal position. Afiiurther obj ect is to -provide means to render'itimpossibleto move the cover to such abnormal position" while =the kievice *is installed in the posi'tion--which it =normally expected to occupy in use; Another -bbject -oi 'the invention is to" provide at hinge structure so constructed that theiparts-tmay be easily: engaged or disengaged, at idl' before the tn'stallation thereof on the meter*easing, man -hble, orother simllar structura to whichitisito be applied. a rnother object -is to provide a-=hingestr'ucture of thebharacter mentioned;assooiated with means roelockingthe coveragainst pivotal movement.

"The invention will he hereinafter fiflly set'forth and particdlarlypointd oht in the claims.

in the'iaccompanyingddrawing: I Figure 1 is a topi planwiew of a'meteneasin'g, or the like,with the top-in'olosed pesition;

Figure 2' is an-enlarged plamview' illustrating "the hingesstructure; V H Figure 3 is a vertical sectional-view {thereof Figure 4' is a detail =-perspeo'tive v ew of *the} su port memberofthe hingeyand V Figure 5 is a-detail perspective yiew'of the timtle member. V l a a Referring to the drawingiB =desig=nates a meter box; man hole brother "sirnilai'--structure preferably of "circular cross seotion,- and eonstructedbf tile, concrete, orothe'r' suitable material. --Embedded within the oasing structure--is -'an= anchor member A, whieh -fon purposes nf-illustrationis shown of arouate'torm-in plan'viewbut nofilirn- "ited to this-form; anlzl con'struttekifiwitlr two relatively' spaced parailel "flanges l0, joi-nd-- by='the grid- I sothat it may :beemboein tithe-wall in such manneras tdbe"rigidiv'heldinplace; I

Extending outwardly from the outer wall' lll of theanchor member-'A are two support arms l2, laterally spaced with respect to each other, and each having a laterally and inwardly ofiset bearing portion l3, provided with semi-circular seats M. Also extending from the outer flange H3, in a normal horizontal position, is a rigid lock member l5, having an outer free end which is turned downwardly on an are having as its center the center of the arc of the semi-circular seats I; of the bearings l3, as indicated at IS.

The movable portion of the hinge consists of a. pintle l1 formed integrally with supporting arms respect to 'the pintlet *a suitable hole in the ground, -to such a depth 20 8, carriedby the cover "'C,-the ends of-the pintle extendin'g laterally beyond said arms" so as- -to rest and rotate in the bearing seats I l. The pin- 'tle is also provided-with'one o1 more enlargements I'l (twobeing'shown) having peripheral edges concentric' with the'-pintle,--and with the overhanging portion IBof-the lockmernber 15, It will be observed that the enlargements extend around the pintle for something more than 180 deg r'ees, and terminate in shou1ders"- l9 and 20;:

" respectivelyywhich are arranged tangentially --with The arrangement is such that the enlargements are always in engagement with the lock -member 1'5 andseats M' during nor- 'mal rotativainovement' 0f the i hinge, and may= 'not be disengaged until the" cover C has been moved downwardly to a Vertical-positionapproxi- H mat'el'y para1le1==withth wall of the box- B.

In practice, the box B is norr'nally inserted into i while-"the cover is 1 position, it will nor- "mally lie flush with the surface of' the surrounding ground. -The hinge must be connected in "operative relation before the=box is-burie'd-as "above suggested. To -do"'this,-it is first necessary '-to place the cover in a horizontal position, as shown in dotted lines at a in Figure 3. This "will bring'the shoulders of the enlargements parallel with the outersurfa'ce of the outside flange it). Then by' pushing the'hinge upwardly;

and rotating the cover downwardly, the pintle may bernovd upto a position indicatedin "dotted lines at b, between-the-- support arms l2 and baekarid above the plane of the 'bearings l3. 'At this time thestopwalls l9 of theen-M larg'ementsWill bear-against the undersurface "of the look member-J5. 'Ihemo'ver isthennioved toward-the depending portion it of the'rigid lock 1 member until the extremities of 1 the pintle drop 'into the bearing recesses 34, as indicated "indottedi lines CFEigure S, whereupon by rotating "the 'cover to the right as viewed in said figure arid iridicated 'by the 'dotte'diline "d, 'the-cover 'may be 'moved toclosed position. Thereaiter, while the box is buried, the enlargements Il will permit rotation of the cover, because their peripheries are concentric with the curvature of the overhanging portion I6 of the guard and with recesses I4, but it will never be possible to bring the cover to a position corresponding with dotted line position b, because the ground will interfere. Therefore, as long asthe box is buried, it will be impossible to detach the cover without breaking or destroying the hinge.

It is preferred to provide the inside flange In of the support member with a locking lug H, which is engageable by a button 22 carried by a stud 23, which is rotatively mounted in the cover, said stud having an angular head protruding through the cover, so that it may be engaged by a wrench, or other suitable tool for turning. The button bears upon a cam 24, so that substantial pressure is brought to bear upon it as it engages the lug.

The advantages of the invention will be readily apparent to those skilled in the art to which it belongs. For instance, it will be obvious that a very simple and inexpensive hinge is provided, which cannot be disengaged unless the cover may be moved to a position which it is impossible for it to reach while the partsare installed in operative position, so that disengagement of the cover is absolutely prevented unless.

the hinge is destroyed. A further advantage is that the parts are so constructed and arranged that they may be readily and easily engaged and disengaged before the box is installed in its operative position.

Having thus explained the nature of the invention and described an operative manner of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the forms of its use, what is claimed is:

1. A cover structure of the character described comprising a stationary anchor member having bearing members projecting therefrom, a movable cover member having arms carrying a pintle rotatably mounted in said bearing members, a lock member also extended outwardly from the anchor member at a position between the bearing members and provided with a free end overhanging said pintle, and movable shoulder means carried by the pintle and concentric therewith, said movable shoulder means being so positioned as to rotatively engage the undersurface of the rigid lock member.

2. A cover structure of the character described comprising a stationary support member having bearing members projecting therefrom provided with arcuate seats, a movable cover memher having arms carrying a pintle rotatably mounted in said seats, a rigid lock member having a down-turned arcuate portion overhanging said pintle, and radial enlargements on said pintle concentric with and rotatively engaging the arcuate portion of said rigid lock.

3. A cover structure of the character described comprising a stationary support member having bearing members projecting therefrom provided with arcuate bearing surfaces, a movable cover member carrying a pintle which is rotatively mounted in said bearing members, a rigid lock member having an arcuate down-turned portion overhanging said pintle and concentric enlargements carried by said pintle, said enlargements being also concentric with and rotatively engaging the undersurface of the down-turned arcuate portion of the rigid lock member, said enlargements having shoulders arranged tangen tially with respect to said pintle.

4. A cover structure of the character described comprising a stationary support member having support arms extended therefrom, said arms being provided with laterally and inwardly extended bearing portions, a movable cover member carrying a pintle rotatively mounted in said bearing portions, a rigid lock member projecting from the support member and having an arcuate down-turned portion overhanging said pintle and concentric therewith, and arcuate enlargements carried by said bearing portions at positions spaced from the ends thereof and normally located beneath and rotatively engaging the arcuate down-turned portion of said rigid lock member.

5. Acover structure of the character described comprising an arcuate anchor member having relatively spaced inner and outer flanges, support arms projecting outwardly from the outside flange of said anchor member, said arms having bearings at their ends, a movable cover member carrying a pintle rotatively mounted in said bearings, a rigid lock member projecting from said outsideflange and having an arcuate portion overhanging said pintle and concentric therewith, and arcuate shoulder means carried by the pintle and rotatively engaging the underside of the overhanging portion of said rigid lock member.

6. A cover structure of the character described comprising a stationary support member provided with an inner locking lug and with outwardly projecting bearing arms, a movable cover member having arms carrying a pintle rotatively mounted in said arms, a rigid lock member having an arcuate portion concentric with said bearing arms and overhanging the same, arcuate shoulder members carried by said pintle and concentric therewith and also concentric with and rotatively engaging the arcuate portion of the rigid lock member, and means carried by said movable member for engaging said lug.

7. A cover structure of the character described comprising an arcuate member having inner and outer arcuate flanges arranged in parallel relation, the inner flange having a locking lug projecting therefrom, the outer flange having bearing members projecting outwardly therefrom, a rigid lock member also projecting outwardly from said outerflange, a movable cover member having a pintle rotatively engaging said bearing members, arcuate enlargements carried by said pintle and concentric therewith and also with said rigid lock member, said enlargements normally having rotative engagement with the underside of said rigid lock member, a stud rota- ..tivelymounted in said movable cover member and carrying a button engage-able with said lug, and means for creating a locking tension on said button as it is moved into engagement with said l i p FRED E. HARDY, JR.