USRE12532E - Mold for sewers - Google Patents

Description

'N0. 12,5s 2. REISSUED-SEPT. 1a, 1906.

' J. B. BLAW.

MOLD FOR SEWERS, &0;

APPLICATION FILED JUN E 30,1906.

2 SHEETS SHEET 1.

No. 12,532. REISSUBD SEPT. 18, 1906.

J. B. BLAW.

MOLD FOR SBWERS; 6w. -APPLIUATION FILED JUNE 3.0, 1903.

2 SHEETSSHEET 2.

-UNITED sTA rEs PATENT OFFICE.

JACOB B. BLAW, OF PITTSBURG, PENNSYLVANIA, AssIoNo TO BL W COLLAPSIBLE STEEL CENTERING COMPANY, OF PITTSBURG, PENN; SYLVANIA', A CORPORATIONOF NEW JEusEY.

MOLD FOR SEWEHS, 61.6.

Specification of Reissued Letters Patent. Reissued Sept. '18, 1906.

Original No- 768,025, dated August 23, 1904. Application for reissue filed June 30, 1906. Serial No. 324,280.

To all whom zit may concern.-

Be it known that I, JAcoB B. BLkw, a citithe mold and distending the same in vertical direction and around the circumfcrcnce between the top and bottom, so as to avoid contraction of What ma be termed the sides of the mold whi e being vertically expanded and to more uniformly expand the mold, said means being adapted to be most conveniently applied to said sections, and removed therefrom in dismcmbering the mold.

It further consists of novel means for distending and contracting the mold in lateral direction, all as will be hereinafter described, the novel feature being pointed out in the claims; Y

Figure 1 represents a transverse vertical section of a sewer-mold embodying my in- .vention. Figure 2 represents a longitudinal vertical section thereof on hue ac as, Fig. 1.

Fig. 3 represents a section of a portion on line 3 '3], Fig. 1. Fig. 31} represents a horizon tal section of portions of contiguous bodies. Fig. 4 re resents a transverse vertical section of a mo ification. Fig. 5 represents a transverse vertical section of another modification. Fig. 6 represents a section of a modification.

Similar letters of reference indicate corrosponding parts in the figures.

Referring to thefilrawings, A designates a mold having a tubular bod form'edof Tipper and lower sections B'B am adapted to serve as a core for the building of a sewer of ne ment, brick, or other material built. l-

C designates cleats or plates, which ate riveted or otherwise connected with the ends of one section on the interior thereof and overlap the adg'accnt ends of the othel fsleci tions, the over apping portions havin seas I), through which are passed the b0 ts E,

. Y which are rotatably connected with the adjacent portion of the lower section B and have flattened heads which maypass through said slots and then by a quarter-turn of the bolts occupy positions at a right angle to said slots thus connecting the sections as one.

F desi nates shoes, which are of segmental form an rest, respectively, n on the inner faces of the top and bottom 0 the'opposite sections of the mold, the same having connected with them the hooks G, the shanks of which are screw-threaded for the engagement of threaded portions of buckles H, it being not-iced that said shoes are each pro- 1 vided with a series of openings F, arranged one under the other, and that the end limbs of said hooks may be placed in the respective openings F of said shoes relativel to the diametrical distance between the s oes and the requirements of adjustably connecting the hooks with said shoes, it being evident that by rotating said buckles the hooks, and

consequently the shoes, are advanced and forced outwardly .in vertical direction, and

the body of the mold is accordingly expand ed, straiued, and braced, whereby it may sustain the weight of earth, Sac, subsequently superimposed on'the same. When said buckles are rotated in the opposite direction, the hooks are drawn in and the shoes are relieved o f pressure, and thus the top and bottom of the-body are permitted to contract or close, and thus reduce the vertical diameter of said body.

On the inner faces of the sections are the eyes J, to which are applied the hooks K, the shanks of the latter extending at a right angle to those of the hooks G and being'screwthreaded and engaged by buckles .li, so that the side portions of the sections of the body may be expanded and contracted in lateral directions, and thereby strained, stiffened,

and braced. It will be noticed that the eyes J are so disposed in the side portion of the body that the hooks. K occupy dill'erent planes from those of the hooks of the shoes F. Consec uently the buckles H and L may be rotated without interfering with "each other, as will be seen in Fig. 2. I

The operation is as follows: The lower sec tion ofthc mold is placed in axtreneh, on

which is previously laid the cement or other iilat'erial for the lower portion kit the sewer.

The upper section is then located onthe' toe mold is then placed against the end of the previous one and coupledthercto, and.

molding is C(llltlllllfil. (See w When the cei'neljit or matenal is set the end lower mold section:

by turning thereof ore longitiuiinal plates (J site which tl opeloted, thereby padlin Ill l3, and. member item the come: L is then op ate-d unlowei' Inembei v cement, although in he some di: poi member.

ated, thereby ceos epprosch escb. other and free the IQlflitl limited moldsurt'sce 03);; site ends oi the verticc ,ut'nbuclile F. Fhs or the upper a .d lower mei'obers belog-out oi elineinei Joe-ii not inter fel'e upon the ope-cation of the buckles ll. It Will be-eppazent Tom the foregoing description that by securing the member near the the mold members B very little force is necessary l i the of such edges as the y of the members B ello' the fh'eeing of the small amount of sur :iece at at t me sort of peeling occurs greoually mold members from the edg s tossed the center, whereby 3111111 icon-t of force is hecessery and or lieinnieiiog need be employed to loosen the mold.

in w 1 31 as cylindric in cross-section, while in Fig l it is shown elliptical or ovoid. In

shoes ll, hooks G, oiicstles H, heel-is end buckles being oticed that the hooks and. boot Q cf; each othei', and said llOOl-IS nuwcted with a J on the oodv A. it I no evident the body. of the mold is l that by properly rotating the. several buckles the body previously expanded may be contracted. I H y A c In Fig. 6 I show a staple or looped-shaped piece M, which is connected with the body I) adjacent to the elect or plete'C, the latter being provided with s slot D, through which said piece passes into the interior of said body, said. piece forming 9. connection for one of the hooks K, whereby the body may be expanded. and contracted, as in. the previous constructions. hen the mold is to be dismembered, the hook is disconnected from the piece hi, and the elect C may be removed from solid piece,

ln Fig. I show a coupling for adjacent o1- contiguous mold-bodies when laid end to end, the same consistlno' of tlle'i nnularcleat ll, one end of which lii'mly secured to one of the bodies by rivets P of other'suitable means, said cleat overls )ping the joint with the adjacent body, to W iich latter is secured the staple ,5, which projects inwardly there ire-mend passes through a slot R in said clest. A Wedge 01' key S is passed through the inner portion of said staple and, riding against the inner face of the clcat, draws the tightly in position, and thus firmly connects 01 couples the adjacent bodies. A: -iiiumher of staples, slots, and wedges may be employed around the cleat, as desired, the seme providing a convenient or easily-so plied and effective coupling 01' fastening, the wedges being readily loosened and removed when the bodies are to be separated.

It is evident that the invention is equally applicable to the formation of water-pipes,

tures of the kind.

In the practical use of the mold or shown in. my foi'niei' patent, No. 727,272, dated May 5, 1e03, it is found in removing the expending; device difficulty arises from the fact that the threaded rods are in that denecessary to removethe entire expanding de vice a unit or else to detach it from the shell and then turn the buckle, so as to Tomove it from. the rods G. it is evident that buckle ll permits a detachment of the rod and buckle from both shoes, the three parts being then separately removable.

Various changes may be made in the dethe general spirit of my invention, and I do not, therefore, desire to be limited in each case to the same.

Having thus described my invention, what vters Patent, is

A mold composed of a. divided tubular body, a cleat connected with one end of said body and freely overlapping the other end ol" conveyors, conduits, and other tubular struccore 10 vice secured to the shoe, sothet it is either 110 in my present device a very sligl'it turn of the 1 tails of construction without departing from I claim as new, and desire to secure by'Let-- I body, means for detachably scouring the I 0 with hooks adapted to be detachably conthe divided ends of "buckles, and means for connecting the said around the latter intermediate of said shoes.

shanks and threaded buckles fitted on said shanks.

" threaded shanks,

the periphery of-the mold intermediate of said shoes.

free end of said cleat with the adjacent end of the body and shoes within the body at the top and bottom thereof each of said shoes having an opening therein,-in combination nected with said shoes in the respective opening therein, and are provided with threaded 2. A mold composed of a divided tubular body, means for detachably securing together said body, and shoes within the body at the top and bottom thereof, in combination with hooks detachably connected with said shoes and provided with buckles fitted on said shanks and auxiliary threaded hooks and buckles crossing the first-named hooks and auxiliary hooks with the sectional mold 3. A mold composed of a divided tubular body, means for detachably securing together the divided ends thereof and shoes within the body at the top and bottom thereof, in combination with hooks which are shanks and vertical buckles fitted on said shanks, eyes on the sides of said body and transversely-extending books which detachably engage said eyes and have threaded shanks and buckles engaging the latter, the hooks of the side eyes crossing those of the shoes, and said side eyes being located around 4. In a mold. a coupling for adjacent tubul 5. A- divided tubular sewer mold member consisting of independent flexible arti-tubular sections, and means en aging the edges of each section whereby dire edges may be sprung inward and the sections gradually loosened from the molded material.

6. A divided tubular sewer mold member consisting of two independent opposing flexible parti-tubular sections, and rigid adjustable means extending transversely of the mold and engaging the edges of each section whereby such edges may be moved in and out; i

7. A sewer mold consisting of two inde pendent substantially semitubular sections of flexible material and adjustable screw threaded struts connecting the opposite edges of each section whereby such edges maybe moved in and out.

8. A sewer mold-comprising pansible members of flexible metal and a cleat on the interior of the mold adapted to overlap and stiffen the meeting edges and detachably secured to one member;

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses.

JACOB B. BLAW. Witnesses:

J. C. BRADLEY, ARoHwonTH MARTIN.

a iiaiFOf 'exl l t

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