USRE1277E - Improvement in molds for molding cement pipes - Google Patents

Improvement in molds for molding cement pipes Download PDF

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Publication number
USRE1277E
USRE1277E US RE1277 E USRE1277 E US RE1277E
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US
United States
Prior art keywords
mold
pipe
cement
molds
improvement
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English (en)
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  • FIG. l4 is a perspective view of the whole apparatus, excepting the detachable collar.
  • Fig. 2 is a perspective view of the detachable collar.
  • Fig. 3 is a perspective view of the detachablebaseplate of the mold.
  • Fig. 4 is a vertical central section of Fig. l, and Fig.
  • Fig. 6 is a "crtical section of the frame, showing the core in elevation with the mold around it. This section is taken at right angles to Fig. 4.
  • Fig. 7 is a ver-tical central section of the whole apparatus with a section of cement pipe molded in it. This section is also taken at right ang-les to Fig. 4.
  • the leading idea of my invention is the production of externally-collated and internallysquare-shouldered hydraulic-cement pipe by molding vertically in metallic or other molds or flasks which are not built up at each operation of molding a-section of pipe.
  • hydraulic-cement pi pe answers a. better purpose .for underground drainage thanv metal or burntclay pipe, because it is free from liability to rust and is In uch cheaper than metal pipe and stron ger and cheaper than even burn tclay pipe, and .also because it allows of branch co11- nections being readily formed without danger of damaging the mann my linvention is. of great utility, inasmuchas it enables me to furnish the market with a perfect substitute for the most approved style of metal pipe at small cost.
  • tacliable base or bottom plate, or its equivalent with lifting loops or eyes on its upper side; fourth, in the use of va detachable col lar, or equivalent tool, for forming a rightangle or nearlyright-angle socket within the collar portion of the vertically-molded pipe;
  • A represents a platform on which the mold or molds are arranged.
  • B is a central bar bolted firmly to the platform 'and projecting' upward with a slight taper some three feet (more or less) from the same.
  • This bar is designed as the core to the mold F, but it also serves for thefdetachable collar Gr, or its equivalent, to t and move upon when said collar is arranged in position for forming a ri ght-an gle or nearly rightangle socket within the collar portion of a cement pipe.
  • E is a base or bottom to disconnectliblefrom the mold. vlhrongh its center a circular hole, E', is cut, and from its top two or more lifting handles or loops, b b,l project upward, and also a ring-bead, c. In stead ofthe ring-bead, a groove of about half an inch depth may be cut in the plate.
  • O is a hinged adjustable table, withl a circu ⁇ lar hole, U', through its center.
  • the removable tool G for forming the rightangle or nearly-right angle socket within the collar -of the pipe is of ring form, and has a handle, g, extending up from ⁇ its top.
  • the hinged table is rst thrown up and back to the position shown in red outlines.
  • the cement . is placed upon the hinged table C, and therefrom is gradually lforced into the mold and rammed compactly until the mold is lled to within a short distance of its top or ofthe terminus of the collar portion.
  • the tool G is fitted on or around the central bar, B, and forced down by vertical and circular pressure into the cementuntil' its upper surface'comes even with upper termini of the bar B and mold F.
  • the hinged table C is first thrown up tothe position shown in red.
  • the c'ollarl or tool G is then withdrawn by first gently ,turning 'it slightly so as to loosen itl, and then drawing -it upward.
  • the mold with the pipein it is net raised by elevating the ⁇ base-plate, on whichit rests,by its handles. until it clears the top of the :central bar, B.

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