US2739362A

US2739362A - Molds for concrete pipe weights

Info

Publication number: US2739362A
Application number: US347539A
Authority: US
Inventors: Farrile S Young
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-04-08
Filing date: 1953-04-08
Publication date: 1956-03-27
Anticipated expiration: 1973-03-27

Description

March 27, 195e Filed April 8, 1955 F. s. YOUNG 2,739,362

MoLDs FOR CONCRETE PIPE wEIGHTs 2 Sheets-Sheet l A- ng 20 v Farm/e J. YoU/7g INVENTOR.

March 27 1956 F, 5 YOUNG 2,739,362

MOLDS FOR CONCRETE PIPE WEIGHTS Filed April 8, 1953 2 Sheets-Sheet 2 FQ/r//e J. YoU/7 INVENTOR.

BY Salam/fda.. 6H/2ML ATTORNEYJ United States Patent O MOLDS FOR CONCRETE PIPE WEIGHTS Farrile S. Young, Houston, rl`ex. Application April 8, 1953, Serial No. 347,539

1 Claim. (Cl. 25-127) This invention relates to new and useful improvements in molds for concrete pipe weights.

In the laying of pipelines across rivers, swampy land areas, and other areas which tend to iioat the pipe, it is necessary to provide concrete pipe Weights or some similar anchoring means to prevent the pipeline from shifting or oating. In the past, concrete weights which have been used for pipelines have been manufactured at a plant and then shipped to the point at which the weights are to be used. Due to the extreme weight of these concrete pipe weights, the costs of shipping has been extremely high and therefore eiorts have been made to develop molds fork these concrete weights which could be used at the location at which the pipeline is laid. An example of a form for concrete pipe weights is shown in my co-pending U. S. patent application, Serial No. 296,45 5, led lune 30, 1952.

When using molds or forming apparatus for concrete pipe,

weights, at the pipeline location, one of the primary requisites is that the molds be readily separable into their component parts so that the molds themselves can be readily handled and shipped from one location to another. Another important requirement for these molds is that they be readily removable from the concrete Weights after the concrete has set so that such removal can be effected Without cracking or otherwise damaging the weights.

It is therefore an object of this invention to provide a mold or forming apparatus for concrete pipe weights which is capable of being readily disassembled into its component parts to facilitate the transportation thereof from one pipeline location to another and also to assure the ready removal thereof from the concrete weights formed therein.

An important object of this invention is to provide a mold or forming apparatus for concrete weights adapted to be disposed about a pipe, wherein said mold or forming apparatus includes an outer shell and an inner core which are removably attached to a separator plate which extends through the center of said shell and said core to divide the annular space between the outer shell and the core into two substantially identical areas wherein the concrete weights are formed.

Another object of this invention is to providean improved mold for forming a pair of complementary concrete pipe weights, wherein the mold has an outer shell composed of two semi-cylindrical members which are joined together by a releasable means, and each of said semi-cylindrical members being hinged for ready removal from the concrete pipe Weights formed within the mold.

A further object of this invention is to provide an improved mold for concrete pipe weights, wherein the mold is capable of having detachably connected thereto different sized cores whereby the concrete weights formed in the mold can have different sized internal openings for fitting about different sized pipes.

The construction designed to carry outthe invention will be hereinafter described together with other features thereof.

The invention will be more readily understood from a reading of the following speciiications and by reference 'to the accompanying drawings forming a part thereof,

wherein an example of the invention is shown, and wherein:

Figure 1 is an elevational view of the mold of this in vention.

Figure 2 is an elevational view of the mold of this invention taken on line 2 2 of Figure 1.

Figure 3 is a plan view of the mold of this invention taken on line 3-3 of Figure l.

Figure 4 is a sectional view of the mold taken on line 4 4 of Figure 3.

Figure 5 is an exploded view, illustrating the separator plate and a core segment of the mold. a

Figure 6 is an isometric view, partly in section, illustrating the concrete weights positioned on a pipe.

In the drawings, the letter A designates generally the mold or forming apparatus of this invention, which includes an outer shell S and an inner core C disposed within the shell S with an annular space 10 formed therebetween. The annular space 10 is divided into two substantially equal and complementary sections 10a and 10b by a separator plate P which extends diametrically through the center of the outer shell and the inner core. As will be explained, the separator plate P is detachably connected to the outer shell S and the inner core C, whereby the mold A vcan be readily disassembled into its component parts after concrete pipe weights have been formed in the sections 10a and 10b.

The outer shell S is formed of two shell sections 11 which are identical and each of which is a semi-cylinder which is divided into two equal segments 11a and 11b which are joined together by spaced hinges 12. Each of the shell sections 11 has at its outer ends a plurality of longitudinally spaced radial flanges 14 which are formed by angles welded or otherwise secured to the external surface of the segments of the shell. When a pair of the identical semi-cylindrical shell sections 11 are disposed facing each other with the separator plate P disposed therebetween, openings in the flanges 14 are aligned to receive bolts 15 which pass through the openings in the opposed anges 14 and through openings 16 in the separator plate P. Thus, the bolts 15 serve to hold the shell sections 11 and the separator plate P in an assembled relationship, while at the same time permitting ready removal and separation of the shell sections 11 from each other and from the plate P.

The shell segments 11a each have an inwardly directed lower ange 1817 to provide a taper on the ends of the anges 19a and inwardly directed lower flanges 19b. The

lower flanges 18b and 19h each have radially disposed segments 20 connected thereto by welding or similar aixing means so as to form a flat support for the outer shell S. Triangular plates 21 may be welded or otherwise secured or formed between the external surfaces of the lower anges 1811 and 19b and the segments 20 to provide additional bracing and support (Figures 1 and 2).

Each of the shell segments 11a and 11b has a plurality of longitudinally spaced recesses 25 formed therein, each of the recesses 25 having a curved wall 25a which is substantially perpendicular to the plate P when the mold A is assembled (Figure 3). An inner wall 25b is formed in recess 25 substantially parallel to the plate P. Openings 25C are provided in the inner walls 25b and are alignable upon the connection of the shell sections 11 with the bolts 15 so that a bolt-hole forming pin 28 (Figures 1-3) can extend through adjacent openings 25e and openings 29 in the separator plate P. These pins 28 can be pulled out after the concrete weights have been formed in the mold so as to leave openings in the weights for the reception of bolts, as will be explained.

3 The inner core C is formed of two core members 30 which are identical and are semi-cylindrical and. which together have substantially the same diameter as the diameter of the pipe upon which the concrete weights formed in the mold are positioned. Each core member 30 has radial inwardly' directed retaining lugs 31 disposedV at its upper and lower ends for intertting with retaining angles 33: disposed on both side ot the plate P. By means of these intertting lugs 31 and angle plate 33, the core members 39l can be moved longitudinally in a sliding movement into position on the plate P prior to or after the shell sections 11 have been bolted to the plate P. Each core member 30 has reinforcing bars 32 disposed therein, which may serve as handles for the removal of the core members 30 from the plate P. A particular advantage of having the core members 3l) separable from the plate P is that the parts can be easily handled and more: easily stacked to facilitate transportation. Also, core members having diiierent radiusesl may be used so long asthe retaining lugs 31 extend inside of the retaining bars 33 whereby the internal radius of each of the concrete weights. formed in the mold can be Varied, in accordance with the sizeof thel pipe upon which the weights are toY be mounted.

In the` use of the mold A of this invention, the shell f sections. 11 are' bolted to the separator plate P and the core members' 30 are slidably positioned on the plate P. The mold is positioned vertically as shown in Figures 1 and 2 so that the mold rests upon the support segments 20 which are disposed on` a base such as a board or the ground.A The baseV upon which the mold is mounted prevents the core members 30 from sliding away from their interengaging tit with the retaining angles 33. However, in. some-cases the anges 33 and the lugs 3&1 may frictionally' Contact each other to prevent separation thereof once they areassembled. With the mold thus assembled, the bolt-hole forming pins 28 are extended through the openings 25C and129 so as to project within the weight forming sections a and 10b to provide the bolt holes in the weights formed. Concrete is then poured into the annula'r space 10 to ll the sections 18a and 10b thereof, with the separator plate P dividing the annular space 10 so as to form a pair of identical concrete pipe weights. After thek concrete has set, the bolt-hole forming pins 28 are first removed. Thereafter, the bolts are removed and thet shell sections 11 are removed from the concrete. The hinged' connections 12 joining the shell segments 11a andf Halb of each of the shell sections 11 permit the sections lil to be easily' removed from the concrete weights' in" a sort of peeling action without danger of cracking or otherwise damaging same. It may in some cases be desirable 4to further divide the sections 11 into smaller segments with morey hinges to further facilitate theease of separation of the sections l1 from the concrete weights formed therein. However, it has been found satisfactory to utilize onlly the two segments illustrated in the drawings. With the shell sections 11 removed, the pair of concreteweights formed in the mold can be readily separated from the plate Pand the core members 30. In some instances it `'may be desirable to slip the core members 30 from the weights prior to the separation of the. weights from. the

plate P.

The weights W and W which are thus formed in the mold A of this invention are illustrated in Figure 6 as being disposed about a pipe L by means of bolts B which extend through the openings in the weights formed by the bolt-hole forming pins 28.

As will be appreciated, when the mold A of this invention is broken down into its component parts, the-sections 11 may be laid out substantially fla-t due to the hinged sections 12, the core members 30 can be separated from the flat plate P so that theV bulk of the mold is eliminated for transportation, purposes. This is especially important from a handling standpoint since the parts of the mold are generally made of steel, iron or some similar rigid and heavy material. When it is desired to use the mold, it is readily assembled and connected together by the bolts. 15, so that the mold of this invention is especially adapted for use at the locationI at which the concrete pipe weights are to be mounted on a pipeline.

The foregoing disclosure and description of the invention isillustrative and explanatory thereof and various changes. inr the size, shape and materials, aswell as in the. details of the illustrated construction may be made, within the scope-of the appended claim, without departing from the spirit of' the invention.

. What is claimed is:

A mold for forming concrete weightswhich are adapted to be positioned about a pipe, comprising a pair of semicylindrical shellsections, a separator plate disposed between said sections and extending laterally beyond said shell sections detachable means for connecting the sections a-nd the plate together, said detachable means including lateral anges on the sections and bolts extending through. said lateral flanges and the portion of the plate extending laterally from the sections, core members disposed on opposite sides of said plate and Within said sections tov provide two weight forming semi-cylindrical spaces in the mold, means detachably connecting the core members to the separator plate, outwardly turned retaining angles on said separator plate, andl inwardly directed lugs on said core members for slidably interengaging with said retaining angles on the separator plate, whereby disassembly of the core members from the-plate is: facilitated and different sizes of the core members can be positioned on the separator plate to vary the internal radius ofthe concrete weights formed in the mold.

#References Cited inthe iile of this patent UNITED STATES PATENTS 376,748. Meehan Ian. 24, 1888 4.881,183 Guyer Mar. l0, 1908 1,292,010 Monrath Ian, 21, 1919 1,458,416 Johnson June 12, 1923 2,180,422- Lindsay Nov. 21, 1939 2,453,804 McDearmon Nov. 16, 1948 2,559,296 Hansen July 3, i 2,559,846 Boucher July 10, 1951