US2857646A

US2857646A - Form for concrete stoop

Info

Publication number: US2857646A
Application number: US325603A
Authority: US
Inventors: Bernard J Mcloughlin
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-12-12
Filing date: 1952-12-12
Publication date: 1958-10-28
Anticipated expiration: 1975-10-28

Description

' 1958 B. J. MOLOUGHLIN 2,857,646

FORM FOR CONCRETE STOOP 2 Sheets-Sheet 1 Filed Dec. 12. 1952 HA5 fitter/ ays Oct. 28, 1958 B. J. MCLOUGHLIN 2,857,646

FORM FOR CONCRETE; STOOP 2 Sheets-Sheet 2 Filed Dec. 12, 1952 .n. .5 @Mw Ow n to r Z 0 w v. 1 w m H r ,w I

Unite My invention relates to concrete structures and particularly to a form for concrete steps such as ordinarily form the entrance to a dwelling or other building.

The principal object of my invention is to provide a simple form for molding a flight of steps as an integral, shell-like unit. Another object is to provide a form for molding such a unit of steps having a platform at the top thereof. Another object is to provide a form of the character described which is adjustable so that it may be used for casting units having various numbers of steps. A further object is to provide a form of this character in which the treads of the steps molded therein will overhang the risers, and both the treads and the risers will project laterally from the side wall of said unit.

I accomplish these objects by means of the novel combination of elements described below and illustrated in the accompanying drawing, in which:

Fig. 1 is an exploded perspective view of my form including a reinforcing assembly which may be used therewith;

Fig. 2 is a perspective view of a unit molded in my form and comprising side walls, two steps and a platform at the top thereof;

Fig. 3 is a perspective view of the assembled form for molding a unit having two steps and a platform;

Fig. 4 is a perspective view of a unit showing, in dotted outline, a hand railing at one side thereof;

Fig. 5 is a fragmentary top plan view of the form with a portion of the concrete forming the platform and the steps laid thereon;

Fig. 6 is a section of Fig. 5 in the plane 66; and

Fig. 7 is a fragmentary section through a portion of the steps showing an insert molded therein for the reception of an upright supporting the hand rail.

Referring to the drawings and first to Fig. 1, my form comprises a unitary base element 1 preferably formed of steel plates or sheets of a thickness which may be about 11 gage. As illustrated, it is designed to mold a unit having only two steps and a platform at the top thereof but it is to be understood that the base unit may be designed with any number of steps. form may be required to support greater loads than the treads of the steps, there is provided in the platform portion of the base element two triangular troughs 2 and 3 in which reinforcing bars may be inserted, thus forming beam-like strengthening portions integral with the platform of said steps. The side walls of the element 1 have a plurality of vertically spaced horizontal rows of holes 4 therein, the function of which will be explained below.

Members

5 and 6 form the side walls of the form and are secured to the base element 1 in spaced relation thereto by the members 7 and 8, respectively, which have threaded studs, shown at 9 and 10, therein. The studs 10 pass through holes 11 in the side walls of the base element and are secured to the base element by nuts cooperating therewith. The studs 9 pass through holes 12 and the

members

5 and 6 are secured thereto by Since the plat- 0 States Patent 0" 2,857,646 Patented Oct. 28, 1958 means of nuts 13 as shown in Fig. 3. The bottoms of the spaces between the

members

5 and 6 and the side walls of the base element are closed by the members 14 which are secured to the base element by means of the studs 15 which pass through the openings 4 in the base element and cooperate with nuts on the inside of the base element.

In order that the ends of the platform and the treads and risers of the steps may overhang or project beyond the side walls of the steps, the

members

5 and 6 are provided with inner portions 16, one of which is shown in Fig. l, and which are spaced from the side walls of the base element a distance equal to the thickness to which the side walls of the steps are to be molded. The horizontal surfaces of the portion 16 are coplanar with the platform portion of the base element and with the treads of the steps thereof, while the vertical surfaces of the portions 16 are coplanar with the risers in the base element. The outer portions of the

elements

5 and 6 extend above thetop surfaces of the portions 16 at a distance equal to the thicknesses of the platform and treads of the steps when molded, and the portions 17 of the

members

5 and 6 project beyond the vertical surfaces the portions 16 so that the risers in the steps will be molded to the desired thickness.

The members 18, whichare alike, serve to hold the concrete forming the risers and the overhanging portions of the treads in place. Each of these members may be said to comprise two separate portions. The inner portion 19 thereof is of an over-all depth which is equal to the height of the risers on the base element less the thickness to which the platform and treads of the steps are to be molded. The top surfaces of the portions 19 are horizontal planes, the thickness of these portions is equal to the distance to which the platform and the treads are to overhang the treads below, and the bottom edges 20 are beveled, as perhaps best shown in Fig. 6, so that surfaces of the treads may be finished back to their lines of intersection with the risers. Secured to the portions 19 are the portions 21 which extend above the top surfaces of the portion 19 to a distace equal to the thickness to which the treads and platform are molded. The members 18 are provided with studs 22 which serve to secure them to the

members

5 and 6; the

members

5 and 6 being provided with outwardly pro jecting portions 23 having holes 24 therein adapted to pass the studs 22 so that they may be secured by means of nuts on the back of the projections 23. The space at the bottom between the lowermost riser on the base element and the lowermost element 18 may be closed by a member 24 of the same thickness as the member 14.

The back of the form at the top of the platform forming portion thereof is closed by the member 25 which is secured to the top of the spacers 7 and 8 by studs and bolts as shown at 26 in Fig. 3.

If the unit when molded is to have only one step and a platform the members 14 instead of being secured to the side walls of the base element 1 by having the studs 15 pass through the lowermost row of holes 4, they are secured thereto by having the studs pass through the next higher row of holes 4.

in molding the steps I prefer'to use a pre-fabricated reinforcing element such as indicated at 27' in Fig. 1' and which may be formed of No. 8 wire welded or otherwise secured together as shown. This is placed within the assembled form as'shown in Fig. 3. Bars, such as shown at 28 and 29 in Fig. 6 may be suspended by wires secured to the reinforcing unit 27 so that they are in somewhat spaced relation to the bottom of the troughs 2 and 3 in the platform portion of the base element; and bars, such' as shown at 30 in Fig. 6, may be merely laid upon the tread portions of the reinforcing unit 27. 'Where a hand railingistobeappliedto the steps,.inserts such as shown at 31 may be molded in the concrete forming the treads and platform of the steps. It is to be understood, of course, ;th at,1the reinforcing element 27 is .embedded in the concrete, andhence iseither supported in .vertically spaced relation tothe base element before the concrete is poured, or a thin layer of concrete is first :laid over the base element (except:in the troughs), the reinforcing then laid ,thereover, land the balance .of the concrete then poured.

While I have .described my invention its preferred embodiment it is .tobe understood that the words I have used'are ,Wordsof description rather .than words of limitation and thatchanges .within .the purview of the tip pendedclaims may be ,made without departing from the true scope and spirit of my .invention.

What I claim is:

.1. Aformfor molding a concrete-stoop as an integral, shellflike unit:having side ,Walls and treadsand risers projecting laterally beyond .said sidewalls; said form comprising .a .unitary base element having sides, treads, and risers forming'theinnerside of said fo-rm; members forming the outer side walls of said form, each comprising inner andouterportions adapted, respectively, to support said projecting portions .of said stoop, while plastic, and confine the ends thereof; means, including vertical membersbetween .thelside walls of said unit at the rear thereof and the inner portions .of said members forming the outer side walls of said form, for securing said members tosaid base element inspaced relation to the sides thereof; separateimembers extendingbeyond theuouter portions of .the side wall forming members forming the outer sides of the risers of said form; and means for securing said separate members to thelmembers forming the outer side walls of said form in laterally spaced relation to the risers of said base element adistance equal to the thickness of the risers of said stoop and in vertically spaced relation to the treadsof said base element immediately below a distance substantially equal to the thickness of the treads of said stoop.

2. A form for molding a concrete stoop as an integral, shell-like unit having side walls, treads and risers in which the treads project beyond the risers and both the treads and risers project beyond the side walls; said form comprising a unitary base element having sides, treads, and risers forming the inner side of said form; members forming the outer side walls ofsaid form, each comprising inner and outer portions adapted, respectively, to support those portionslof said stoop, while plastic, which project beyond the sidelwalls and confine the ends thereof; means for securing said members to said base element in spaced relation thereto; separate members extending beyond the outer portions of the side wall forming members and comprising-inner and outer portions forming, respectively, the

outer sides of the risers of said form and the outer edges of the treads thereof; the top edges of said inner portions being plane and of a width equal to the distance which the treads of said stoop project beyond the risers thereof, and the outer portions of said members projecting above said plane portions a distance equal to the thickness of the treads of-said stoop; and means for securing said separate members to the outer sides of said side wall forming members in spaced relation to the risers of said base element.

3. A form for molding an integral, shell-like, concrete stoop comprising a plurality of steps and a platform at the top 'tlierof; said form comprising a unitary base element having sides, treads, risers and a top platform forming the inner side of said form and having parallel-disposed, transversely-extending troughs in the platform thereof each adapted to hold a straight reinforcing bar extending substantially entirely across said platform for forming strengthening ribs on the bottom of the platform of said stoop; members forming the outer sides of the side walls of said form; means securing said members to said base .element in spaced relation thereto; members forming closures for the bottom of the spaces-between the side Wall forming portions of said form, and means for securing said closure-forming members to said base element at various distances from the bottom of said base element depending upon the number of steps in said stoop; separate means extending beyond the outer side wall forming members and forming the outer sides of the risers of said stoop; and means securing each of said separate means to said members forming the outer sides of the side walls of said form in spacedrelation both to an adjacent riser-formic portionof said base element and to the treadforming portion thereof next below.

4. A form for molding a concrete stoop as an integral, shell-like unit having a top platform, sides, and at least one step having a tread, a riser between said tread and said piatforrn, and a riser below said tread; said form comprising a unitary base element having a top platform, sides, and a plurality of treads and risers forming steps ieading to said platform; members forming the outer side Walls of said form; means securing said members to said base element in spaced relation to the sides thereof; at least two separate members extending beyond the outer side Wall forming members and forming the outer sides of the risers of said stoop; means securing said separate members to the outer sides of the members forming the outer side walls of said form; elements forming bottom closures for the spaces between the sides of said base element and the members forming the outer side walls of said form; and means for securing said closure elements to said form at various distances below the platform of said base element depending upon the number of steps required in said stoop.

5. A form for molding a concrete stoop as an integral, shell-like unit having side walls, treads and risers; said treads projecting beyond said risers; said form comprising a unitary base element having sides, treads and risers forming the inner side of said form; members forming the outer side walls of said form; means for securing said members to said base element in spaced relation to the sides thereof; separate members extending beyond the outer side wall forming members forming the outer sides of the risers of said form and having inner and outer portions adapted, respectively, to supoprt those portions of the treads of said stoop projecting beyond the risers thereof, while plastic, and confine the front edges thereof; means for securing said separate members to the members forming the outer side walls of said form in zones beyond the inner faces of said side wall forming members in laterally spaced relation to the risers of said base element a distance equal to the thickness of the risers of said stoop and in vertically spaced relation to the treads of said baseelerncnt immediately below a distance substantially equal to the thickness of the treads of said stoop; elements forming bottom closures for the spaces between the sides of said base element and the members forming the outer side walls of said form; and means for securing said closure elements to said form at various distances below the platform of said base element depending upon the number of steps required in said stoop.

References Cited in the file of this patent UNITED STATES PATENTS 950,567 Kesling Mar. 1, 1910 959,438 Blose May 24, 1910 987,737 Oman Mar. 28, 1911 1,041,551 Witthoefft Oct. 15, 1912 1,427,276 Feldblet et al. Aug. 29, 1922 1,586,440 Bilyeu May 25, 1926 2,255,480 Connor et al. Sept. 9, 1941 2,477,320 Tyroler July 26, 1949 2,537,396 Cato Ian. 9, 1951 2,688,786 Pinner Sept. 14, 1954 OTHER REFERENCES 448,353 Great Britain June 8, 1936