US2278089A - Form for septic tanks - Google Patents

Description

M. c. NOTTINGHAM FORM FOR sEPTIc TANKS March 31; 1942.

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f w, Rm Y y J7 o m J.. W W\ ..1/ L/ v M Patented Mar. 31, 1942 UNITED STATES PATENT OFFICEI 2,278,089 f FORM Fon sErlo TANKS Mark o. Nottingham, Temple city, Calif.

Application October 7, 1940, Serial No. 360,096

2 Claims.

My invention relates to forms for septic tanks. An object of the invention is to provide a form whereby the septic tank 'may be poured in an inverted form with the open end downward.

Still other objects of the invention are to provide such forms that are convenient in use, of improved structure, easily assembled and easily knocked down, economical in manufacture, having superior serviceability, relative simplicity, inexpensiveness in construction and general efficiency.

The invention also com-prises novel details of construction and novel combinations and arrangements of parts, which will more :fully appear in the course of the following description. However, the drawing merely shows and the following description merely describes one embodiment of the present invention, which is given by way of illustration or example only.

.In the drawing, like reference characters designate similar parts in the several views.

Figure 1 is a longitudinal section through an embodiment of the invention, taken on the line I-I of Figure 2.

Figure 2 is a transverse section, taken on the line 2-2 of Figure l.

Figure 3 is a broken elevation of an end of the embodiment, viewing the side thereof.

Figures 4 and 5 are enlarged details of parts of Figure 2.

Fig. 6 is an enlarged, broken section taken on the line 6-6 of Fig. 1.

Referring more in detail to the drawing, the reference numeral 1 indicates a wooden base upon which the form is mounted. Bulkheads 8 and 9 are supported on the base l.

The bulkheads respectively abut against the inner side of channel members I and I2 at the ends of the form. Cleats I3 maintain the rigidity of the bulkheads. The channel members I0 are curved to fit back to back with channel members I4 and I5, with sheet metal walls IB and I'I disposed between the fitting, curved backs of the said channel members. The channels of the members I0 face inwardly of their curves and the channels of the members I4, I5 face outwardly with respect to their curves.

At the bottom of the form a wood beam I8 is Aarranged between the sheet metal wall I6 and the lower anged end 2| of the channel member I4. A round headed bolt I9, having a nut in the channel member I4, maintains the sheet metal wall I6, the beam I8 and the flange 2l in relative positions.

The top 24 of the sheet metal wall I6 is bent around a strip 22 -preferably of Wooden material. A bolt 23 holds the folded end 24 around the upper end of the channel member I4. Boards 25 extend substantially from end to end of the form, aiding in strengthening the form at the top thereof.

The construction at the opposite side is similar to that just described, to wit, a beam 26 is disposed between flange 2l at the -bottom of the channel member I5 and the lower end of the sheet metal wall I'I. The beams I8 and 26 are arranged substantially parallel, as are the flanged ends 2| and 21. Moreover, a strip 28 is arranged in upper folded end 29 of the sheet metal side I'I, while bolt 30 holds said assembled parts together at the top of the form. A beam 3 I extends lengthwise substantially from end to end on the outside of the form.

A `rod 32 clamps outer walls of the form together, at the top thereof. One end of the rod 32 is hooked over the channel I5, as shown at 33. The other end of the rod 32 carries an adjusting head 34 held in position by a set screw 35. A flared end 36 of the head 34 engages the channel I4.

Means for maintaining the outer walls of the form, substantially at the horizontal mid-point thereof, comprises slidably adjustable links 3I and 38 that are held together in adjusted positions by adjusting screws 39. The adjusting screws 39 bolt together overlapping ends of the links 3'I and 38. The link 31 has a hooked end 40, while the link 38 has a hooked end 4I. These hooked ends engage the channels I4 and I5 respectively.

The bulkheads 8 and 9 comprise outer walls for forming the ends of the septic tank. The means for providing the inner walls for forming the ends of the septic tank comprise substantially flat sections 42 and 43 that have their outer edges curved in opposite directions. Ribs 44 and 45 respectively strengthen the sections 42 and 43. An intermediate spacer section 46 separates the sections 42 and 43. Abutting flanges 41 and 48 on the sections 42 and 46 are held together by pins 49, which are held in 4place by wedges 50. Abutting flanges 5I and 52 on the sections 46 and 43 respectively are held together by pins 53, which are maintained in place by wedges 54.

Channel members 55 and 55 face their channels inwardly and are arranged to strengthen the inner wall of the form. The lower ends 5'I and 58 of the channel members 55 and 56 are curved around beams 59 and v60 that rest upon the base 1.

The inner, sheet metal wall members 5I and 62, of the inner wall of the form, have lower, parallel flanges 63 and 64 on the outside of the beams 59 and 60, with respect to the ends 51 and 58, Upper abutting edges of the wall members 6| and 82 are held together by angle irons 65 and 66 which are held together by pins 61 and wedges 68.

Anchor pieces 69 and l0 are fastened to the base 1, while wedge blocks 1I- and 'I2 are wedged between the anchor pieces 69, 10 and the lower flanges 2| and 2l, whereby the lower portions of the mold are held against spreading. It is to be understood that the channel ends 51 and 58 are spaced apart in order to provide the normally top opening of the nished septic tank. Bars 'I4 having hooked ends 15 hooking into channel irons 16 and 'il at the bottom of the form tend to maintain the lower ends of the form against separating. Bolt 'i8 fastens the angle iron 16 to the `beam 59 and to flange 63 of the inner sheet metal wall of the form. A series .of external channel irons 'I3 strengthen the outer periphery of the outer wall.

In the use of the invention, the pins and wedges are employed to fasten the inner, end wall sections together and to fasten the inner, sheet `metal walls together at their upper abutting edges. The outer wall members are then placed spaced relation to the inner wall members, in themanner described.

Woven wire 3D is then arranged in the space between the inner and outer Walls of the form, so that such wire becomes embedded in the concrete that is poured into and hardens in place in the form. Wood blocks 8l, 82 and 83 are arranged to make suitable inlet passage and outlet in the nished article. Spaced walls 84 and 85 between the ends of the forms are arranged to form a partition within the tank. Ihe block 82 forms a, passage through this partition. The block 82 is arranged substantially above the level .of the openings provided by the blocks Bland is finished. Lids for septic tanks formed in the I present mold are separately cast.

The removal of the form from the concrete, after it has hardened, is a reversal of the assembly of the parts hereinbefore described, which is believed to be clear from the foregoing description.

While I have illustrated and described what I now regard as the preferred embodiment of my invention, the construction is, of course, subject to modifications without departing from the spirit and scope of my invention. I, therefore, do not wish to restrict myself to the particular form of construction illustrated and described, but desire to avail myself of all modifications which may fall within the scope of the appended claims,

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1.,In a form for casting tanks, outer wall members spaced apart at the top thereof to form an opening therebetween and having externally reverting flanges along said opening to form smooth side edges therefor and external lengthwise ribs, reinforcing members along the inner and outer surfaces .of said wall members at the ends thereof, bulkheads at opposite ends .of the form inwardly of, and against, the inner reinforcing members, clamping bolts extending transversely through the reinforcing .members externally of the bulkheads, and beams lengthwise of the said wall members and wedged lby said clamping bolts in reinforcing relation against the lengthwise ribs of the members, to thus simultaneously clamp the wall members against the bulkheads and brace the `upper flanged edges of the side members.

2. In a form for casting tanks, outer Wall members spaced apart at the top thereof to form a top opening therebetween and having externally reverting flanges along the sides of said opening to form smooth side edges, means in connection with Vsaid flanges to form rigid external ribs, reinforcing channel members against the inner and outer surfaces of said outer wall members at the ends thereof, end bulkheads `within and between said outer wall members against the inner reinforcing members, beams externally and lengthwise of the outer Wall members and with their upper longitudinal edges abutting the said external ribs, and clamping bolts extending through the channel members of the two outer Wall members Yfor clamping `the same against the edges -of the bulkheads and also engaging the lower edges of the said beams 'to conne the latter against said ribs `and thus reinforce the edges of the outer wall members along said opening.

MARK C. NOTTINGHAM.

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