US2586912A - Curb and gutter form - Google Patents

Description

Feb. 26, 1952 O L BRAUN CURB AND GUTTER FORM 2 SHEETS SHEET 1 Filed June 7, 1947 INVENTOR. OHM/7 L. 5704/? BY M 62 m4 PM Feb. 26, 1952 BRAUN 2,586,912

CURB AND GUTTER FORM Filed June 7, 1947 2 SHEETSSHEET 2 INVENTOR.

Patented Feb. 26, 1952 ttwin.L.. Braun; Pittsburgh, Pa.,assignor-t0Re- .,.liance' Steel .Iroducts Company, McKeesport,

.Pa., a corporation of P ennsylvania ApplicationJune 7, 194'Z-,SerialNo.-'753,274

; fiiClaims. (Cl.'25''1'18) i .1 This invention relates. ingeneralhto concrete forms or molds and more. particularly to acurb and gutter form for nsgaprima'rily inconnection with streets'and highvvays-and provides means for spacing-andsecuringxthe roadforms and curb..-

forms to .each omen-whereby a mold is provided in which the curb andguttenusually. of concrete, can be formed.

In the-construction .of a concrete. curb .and

gutter, it. is. common .toluse affront. rail, a back rail, and a curb form secured in positio-nrelative tothe prepared ground. The front and back railsor formsareheld .by stakes driven through stake pockets-attached to the rails and. into the ground. Therailsare also held in. spaced relationiby division plates whichextend transversely between andare. securedby. theirends. to the front and back-.rails by.lug-likenprojections received in slots in the forms. Thedivision plates also-support and securein position .thecurb form or face rail in operative relationto the front and back rails, as well as provide openings when the plates are removed after the concrete, has.,set for expansionvjoints at. suitablevintervals along the curb and. utter.

Difficulty has been experienced .in supporting the curb forms in. position, and variou's arran'rements have been tried for this purpose. .They have usually been fairly complicatedandcumbersome, andinterfere with the finishing of the to of the curb.. In my. arrangement the curb form is secured at intervals to adi-visionplat'e by a relatively. simplelug andslot connection which looks the plate and curb formtogether in a manner which .canbe readily'unlocked .andthe plate.

and curb form then..-separated. The division plate has lugs thereon .having .cam surfaces whereby. the plate -may.be,securely wedged to the rails and. curbforms,. and provide. a sturdy molding structure. I

It is, an objectof myinvention. to provide a curb and gutter-moldwhich is durable, simple, efiective, and one which canbereadilyand accurately set. up .anddismantledv by, unskilled labor. .It is alsoan objectofmy invention to provide an improved division plate or spacer member which willfirmly -.tie thevarious forms together and ,aut om ati ca1ly. sp.ace ,them the .correct distanceapart At thesame time the divisi n. plat s. or. spac r..mcmb si .wi 1. e.. loc t d at t e po n .whe e. i s desired. .tdarra geae pension jo nts. I ;'l":he'div si n p a e w ll .h ldlth ,Qur f mri id yi n position: atthe-desired'. elerat will-not interfe w st owelinepor. .fin-

.iishing the 7 top .of. the'icurmand prevent deflectionofthe forms under the. concretepressure. .The;,whole mold'maybe readily. dismantled and shifted .to a,.new..1ocation without injury td'the ..green concrete.

It. is. also. anpbject. toprovide a simple, strong, efii-cient and durable lockingdevice whereby;;the

. .divisionflplates. may. be securely. fastenedto'jthe various. -forms, employed, .and which. can. be readily. unlockedwithout the useof tools. or highly skilledhelp.

.- In, .the drawings, .in...W.hich L have-shown ,for

,purposes@of...il1ustration only.,the .present preferred. embodiment of1 my invention: Figure 1-.is. a. view. inelevationof my division plates;

.Figure 2, is a viewin elevation showinga-section of the, forms and the. division; plates .in position between the various forms;

.-.Figure 3-is aplanyiewj. showing ,the back and front.forms,v the curb form. and the division plate arran ed in position for molding;

Figure 4is aviewalong the line'IV'1-IV;ofFig- Figure 5' is a viewtalong the line VVofFig- .ureZ;

Figure 6 ,is a view in perspective 'of'aportion of oneof the road forms, showing a division; plate .receiyfrng. slo an "Figure 7. isiane'nlarged yiewofone of-the fastening lugs.

' In. the .drawings, the numeral lli'i'ndicates a mmetalzback form or back :rail ?of "well known 'jjchannel-like shape-including a top flange -ll.

A similarly shaped-front end. relationship; aswellknownin the art.

Between the front and back rails a metalcurb former; face rail l8 of-suitable shape to mold'the curb faceand having a top flange I9, is located.

.. .The flanges! land! 9 define-the plane of the-top parir'of the curb. At suitable, intervals longitudinallyof the-assembled rails and conveniently at; locations" for expansion joints; division plates or :spacer members 'ZII are used. The plate formed .from'sheet .metal of desired thickness, usually "about; 1%?101 an inch,; is disposed transversely of'-'-the*-rails:in

a vertical plane and has a"curb.';*portionMidisposed between the back rails l and curb form l8, and the gutter portion 22 extending from below the curb form |8 to the front rail l5. The plate is shaped so as to correspond to the desired cross section of the curb and gutter. The edge 23 of portion 2| in the plane of flanges i and I9 conforms to the top of the curb and an edge 25 conforms to the face of the curb, the upper edge 25 of the portion 22 conforms to the surface of the gutter and the corner between edge 24 and 25 is shaped to conform with the lower edge portion 26 of the form Hi; the web of the form l8 bears against the edge 25.

As shown in Figures 1 and '7 the top left end of portion 2| and the top right end of portion 22 terminate in lug- like projections 21 and 28 respectively. The projection 21 includes a reduced neck portion 29, a depression 30, the outer end of which is below the level of edge 2|, a dependent finger 3| spaced from the plate and inwardly inclined toward portion 2| so as to form an inwardly-inclined cam surface 32 which terminates just short of portion 2| to leave an opening 33 equal to the width of the web of the rail It. In the upper portion of a link receiving space 34, between the finger 3| and portion 2| is a protuberance 3'5 spaced so as to provide a notch 33 the width of the web of rail Hi and a recess 3'5 a little larger than the width of the opening 33. A metal link 38 (see Figure 1) is received in recess 31, the link being formed from a round bar which is thicker than the opening 33, so that when the link is placed in position in space 34 it will not drop out through space 33. It will be I necessary to slightly spring the finger 3| to permit the link to enter the space, or the linkmay be placed in position with one side opened and then welded to form the complete link. The link 38 is of such length that when in looking position shown in Figure 2 it will be tightly engaged between cam surface 32 and the web of rail I0, and the top of the link will be below the flange I.

The lug 28 projecting from the right end of portion 22 is similar to the lug 2'! which have just described. It is therefore unnecessary to further describe it.

Formed integrally with the edge 25 of the plate 2| is a projecting lug 39 (see Figure 1) which is adapted to project through a slot 40 in form l8 as shown in Figure 2. The lug 39 has a cam surface 4| downwardly and inwardly inclined toward the edge 25. The lug 39 has a shoulder 42 which is less in thickness than the web of form Hi. When the form I8 is in molding position relative to plate 2| the upper edge of the shoulder 42 is in contact with the upper edge of the slot 40.

The curb form l8 has a flat metal projection 43 welded at right angles to the web of form l8. On the plate or projection 43 is a slot 44, the sides of which are parallel to the face of plate I8. In this slot a metal link 45 is slidably disposed and is of a size so that when it is at the upper end of slot 44 it can be hooked over the lug 39, When the link is moved downwardly the upper end of it will slide along the cam surface until it binds between the cam surface 4| and the outer surface of form |8. This will wedge plate 2| and form It! into tight engagement.

Along the top edges of rail In at intervals equal to the spacing of plates 2| a series of cruciform slots 48 are cut out. The slots extend along the top flanges and along the adjoining web of form I0 (see Figure 6). The slots are of such size as to extend into the flange a distance such as will receive the projection 21 and the longitudinally extending portion 41 of slot 46 will receive the link 38. The slot portion 48 extending from the edge of fiange downwardly into the web of rail H3 is of such depth that when the plate 2| is positioned, the upper end of notch 36 will bear against the lower edge of slot portion 48 and the top edge 23 of plate I will lie in the horizontal plane of flange The slots 46 are commonly placed at the expansion joints if such are employed, otherwise as the designer might indicate. A spacing of from 6 to 10 feet is usual.

A like arrangement of slots 49 is provided in the front rail l5.

The various components are assembled to form the curb and gutter form as follows:

The rails l0 and |5 are placed in the desired position on the graded ground and secured by the stakes l3 and i6. The plates 2! are then positioned so that the lugs 21 are entered into the cruciform slots 43 of back rail Hi and placed in locking position. The binding links 38 are slid into locking engagement between the cam surfaces 32 and the webs of the rail. The operation is repeated on the front rail 5. Next the lug 33 is positioned in notch 40 and the link 45 is placed against cam surface 4|, then slid therealong to engage the outside of the form l8.

It is to be understood that the operation need not be performed in the order set forth as either form can be fastened to the plate 2| in any order desired.

When it is desirable to disassemble the mold,

the links are raised from wedging engagement and the division plates 2| lifted from the plastic mass without the use of special hooks or tools.

It is also within the contemplation of my invention to prepare molds for curbs only. In such instance forms l0 and I8 only need be used, and the portion 22 of plate 2| may be considerably shortened. The portion 22 should be staked to the graded ground in any desired fashion, for example, by the use of U-shaped stakes (not shown).

While I have shown for purposes of illustration only the present preferred embodiment of my invention,.it is to be understood that it may be otherwise practised within the scope of the following claims.

I claim:

1. For use in a cons action mold, the combination of an edge rail having a top flange and a connecting vertical web, a curb form having a web portion, a spacer member extending between the rail and the form, a siot partly in the top flange and partly in the web, a lug on the spacer member extending through the slot, a slot in the web of the curb form, a projection on the spacer member extending through the last mentioned slot, a cam surface on the lug extending downand inwardly toward the rail web, a cam surface on the projection extending downwardly and inwardly toward the curb form web, a link member slidably engaging the rail web and cam surface or" the lug and a link member slidably engaging the form web and cam surface of the projection whereby the rail, the form the spacer member may be fastened together.

2. In a curb and gutter mold, an edge rail having a top flange and a depending web, a slot in the top flange, a connecting vertical slot in the web, a curb form spaced laterally from the edge rail, and a division plate extending between the rail and the form, the plate having a lug protruding from the end thereof and receivable in the slots, a depression in the top edge of the lug,

the lug having a depedent finger spaced from the side of the plate and inwardly inclined toward the side of the plate to form a cam surface and to partly enclose a link receiving space, and a link movable in said space along the cam surface whereby the rail web and lug may be wedged relative to each other.

3. In a curb and gutter mold, an edge rail having a top flange and a depending web, a slot in the top flange, a connecting vertical slot in the web, a curb form spaced laterally from the edge rail, and a division plate extending between the rail and the form, the plate having a lug protruding from the end thereof and receivable in the slots, a depression in the top edge of the lug, the lug having a dependent finger spaced from the side of the plate and inwardly inclined toward the side of the plate to form a cam surface and to partly enclose a link receiving space, the link receiving space having a notch in the upper portion wherein the lower edge of the slot is received, and a link movable in said space along the cam surface whereby the rail web and lug may be wedged relative to each other.

4. In a curb and gutter mold, an edge rail havnig a top flange and a depending web, slot in the top flange, a connecting vertical slot in the web, a curb form spaced laterally from the edge rail, a vertical slot in the curb form, and a division plate extending between the rail and the form, the plate having a lug projecting from one end adjacent the top, the lug having a depending inwardly directed finger including a cam surface, which finger is passable through the slots, a lug projecting from another end of the plate and through the slot in the form, the lug having a downwardly and inwardly directed cam surface facing the form, and wedging means between said cam surfaces and the adjoining surfaces of the rail and the form.

5. In a curb and gutter mold, the combination of an edge rail having a top flange and a depending web with a slot therethrough, a spacer plate extending laterally from the rail and having a lug projecting through said slot, a camming part spaced from the edge of said plate and depending from said lug to provide a camming surface sloping inwardly and downwardly toward the web of the rail through which the lug projects, and a link mounted in the space between said depending camming part and plate edge for movement upwardly to a position in engagement with the lug and for movement downwardly in said space to a wedging position in which it is tightly engaged between said camming surface and said web to secure said plate against movement away from said rail.

6. A mold as claimed in claim 5 characterized by said flange being provided with a slot communicating with said web slot through which said lug and link may be lowered to a position with said lug projecting through said web slot, said link when in wedging position being positioned entirely below and clear of the upper surface of said rail flange but being movable upwardly through the slot in said flange to release the connection between said plate and rail and into said position in engagement with said lug.

OTTWIN L. BRAUN.

REFERENCES $11131) The following references are of record in the file of this patent:

UNITED STATES PATENTS

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