US948540A - Mold for sewers. - Google Patents

Mold for sewers. Download PDF

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Publication number
US948540A
US948540A US48355609A US1909483556A US948540A US 948540 A US948540 A US 948540A US 48355609 A US48355609 A US 48355609A US 1909483556 A US1909483556 A US 1909483556A US 948540 A US948540 A US 948540A
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United States
Prior art keywords
mold
shell
sewers
bolts
plates
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Expired - Lifetime
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US48355609A
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Theodore Ellsworth Clark
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/28—Cores; Mandrels
    • B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding

Definitions

  • Mg' invention relates to improvements in inol s for sewers, conduits, etc., which are constructed of cement, concrete, or other suitable building materials, and the object of my invention is to provide a mold that may readily be removed from the sewerpipe or conduit after the said pipe has been constructed aboutit. .l On December 2nd, 1908, I filed an appli cation for Letters Patent, Serial Number 465,660,0n a mold for sewers; the means Shown in that application were particularly adapted for vmolds of say eighteen inches in diameter and larger. In the present application, the means employed are better suited Afor molds of smaller diameter ⁇ though I do not wish it understood thatV I limit the application to molds of any'particular size.
  • Figure 1 is a ci'oss sectional view of the mold.
  • Fig. 2 is.a top view of the means used for contracting the mold.
  • - F ig. 3 is a vtop view of Ythe mold.
  • FIG. 1 is a flexible sheetsteel or iron tubular shell with its longitudinal seam left unriveted or unfastened together, one edge overlapping the other as shown.
  • the mold may be any desired length consistent with the ease, with which it may be handled.
  • the draw-bolts will be forced to traverse the slots 8-8 and be drawn nearer together. as they approach the vertex of the plates 7, resulting in the edges ofthe shell over-lapping each other still further and producing thereby a contraction of the diameter of the mold.
  • 'Ilie mold therefore may readily be withdrawn from the sewer-pipe or conduit after the saine has'been formed about it.
  • the bar G is forced in the opposite direction to that indicated, the
  • inold will be restored to its original diamscribed, comprising a split bshell formed of flexible material with its edges overlapping; a series of brackets arranged in pairs rigidly secured to the free overlapping edges on the inner surface of the shell.y one end of the brackets in each pair extending inwardly and rotatably connected together nearthe central portion of the shell, the other end of the bracket in each pair. being bent and formed concentric with theA shell an' pr'o- .In testimoni' whereof I havelsignedmy vided with 'draw-bolts; a bar extending api .name to this specification in the presence of l10 'proxmately the length of the mold'; triangutwol subscribing Witnesses.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)

Description

T. E. CLARK. MOLD Foa sBwERs. APPLICATION FILED MAR. 15. 1909.
Patented Feb. s, 1910.
Inu/Euros WITNESSES:
j unirsi) sra- Tas P i MOLD Fossati/fijas. i i
To all whom 'ttf/nay concern:
Be it known that I, Ti-iEoooiin Entswon'iii CLARK, a citizen of the United States, residing at Sacramento, .in the. county of Sacramento and State of California, have invented new and useful Improvements in Molds for Sewers, of which the following is a specification. v
Mg' invention relates to improvements in inol s for sewers, conduits, etc., which are constructed of cement, concrete, or other suitable building materials, and the object of my invention is to provide a mold that may readily be removed from the sewerpipe or conduit after the said pipe has been constructed aboutit. .l On December 2nd, 1908, I filed an appli cation for Letters Patent, Serial Number 465,660,0n a mold for sewers; the means Shown in that application were particularly adapted for vmolds of say eighteen inches in diameter and larger. In the present application, the means employed are better suited Afor molds of smaller diameter` though I do not wish it understood thatV I limit the application to molds of any'particular size.
I- attain the objects specified, and others which are apparent, by the mechanism de- .scribed in this specification and illustrated 30.
in the accompanying drawings which form part thereof and in which similar letters or figures refer to similar parts throughout.
Figure 1 is a ci'oss sectional view of the mold. Fig. 2 is.a top view of the means used for contracting the mold.- F ig. 3 is a vtop view of Ythe mold.
In the drawings. 1 is a flexible sheetsteel or iron tubular shell with its longitudinal seam left unriveted or unfastened together, one edge overlapping the other as shown. 9.-'-2 'are lugs securely fastened to the inner surface of the shell by bolts or rivets 4; 3--3 are radial arms integral with the lugs 2 and which are rotatably joined attheir outer ends where they cross each other, bythe bolt 3. The object of these arms is to keep the over-lapping, edges of the shell close together when the shell is contracted, otherwise they would have a tendency to separate.
' 5-5 are draw-bolts passing throughthe Specification of Letters Bate-ntf -Ap'plication' filed March 15,
1909. Serial No. 483,556.
the mold may be any desired length consistent with the ease, with which it may be handled. There are as niany sets oi Apairs of lugs 2 as there arev plates 7 and the lugs '2 are placed at such a distance apart along on the inner surface of the shell as to correspond with the distance apart of the plates 7. It is obvious that when the bar '6 is drawn out in the direction as indicated by the arrow in F ig. 42, the draw-bolts will be forced to traverse the slots 8-8 and be drawn nearer together. as they approach the vertex of the plates 7, resulting in the edges ofthe shell over-lapping each other still further and producing thereby a contraction of the diameter of the mold. 'Ilie mold therefore may readily be withdrawn from the sewer-pipe or conduit after the saine has'been formed about it. It is also obvious that when the bar G is forced in the opposite direction to that indicated, the
inold will be restored to its original diamscribed, comprising a split bshell formed of flexible material with its edges overlapping; a series of brackets arranged in pairs rigidly secured to the free overlapping edges on the inner surface of the shell.y one end of the brackets in each pair extending inwardly and rotatably connected together nearthe central portion of the shell, the other end of the bracket in each pair. being bent and formed concentric with theA shell an' pr'o- .In testimoni' whereof I havelsignedmy vided with 'draw-bolts; a bar extending api .name to this specification in the presence of l10 'proxmately the length of the mold'; triangutwol subscribing Witnesses.
iar plates; on -said bar, and slotted openings A5'1n said plates arallel 'with two convergent THEODORE ELLSWORTH MARK.'
sides thereof t rough which the draw-bolts Witnesses: above mentioned pass and are in siidablere- EnGAR ALLEN' STICKNEY,
lation thereto i JosEI-HCLAREISCE CARPENTER.
US48355609A 1909-03-15 1909-03-15 Mold for sewers. Expired - Lifetime US948540A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683912A (en) * 1952-03-07 1954-07-20 Peter V H Serrell Collapsible concrete pipe mold
US5279491A (en) * 1992-05-28 1994-01-18 Outboard Marine Corporation Molding apparatus including core for molding zero-draft hole
DE19605968A1 (en) * 1996-02-17 1997-08-21 Chemikalien Ges Hans Lungmus G Collapsible mould shutter for refractory lining of foundry ladles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683912A (en) * 1952-03-07 1954-07-20 Peter V H Serrell Collapsible concrete pipe mold
US5279491A (en) * 1992-05-28 1994-01-18 Outboard Marine Corporation Molding apparatus including core for molding zero-draft hole
DE19605968A1 (en) * 1996-02-17 1997-08-21 Chemikalien Ges Hans Lungmus G Collapsible mould shutter for refractory lining of foundry ladles

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