US825052A - Concrete construction. - Google Patents

Description

No. 825,052. PATENTED JULY 3, 1906. F. M. HENRY & J. G. MADDEN.

CONCRETE CONSTRUCTION.

APPLICATION FILED 0GT.{1.1904.

2 SHEETS-SHBET 1.

No. 825,052. PATENTED JULY 3, 1906 F. M. HENRY &-J..G. MADDEN.

CONCRETE CONSTRUCTION.

APPLICATION FILED 0014,1904.

MR 2 7H0 m .2 E w M5 r H A E. m F

formation of pipes.

onrrnn STATES PATENT clarion. x

Fit-in ers MAXWELL HENRY AND JOHN GUNN MADDEN, or MINNEAPOLIS}.

MINNESOTA.

CONCRETE CONSTRUCTION.

Specification of Letters Patent.

I'atented July 3', 1906.

Application filed October 4,1904. Serial No. 227,159.

To (tZZ YUZLONL .7725 vital/y concern:

Be it known that we, Farmers MAXWELL HENRY and Jon): GUNN MADDEN, of Min der construction until itpartially or entirely,

scts,'said. means being removable without in. any way disturbing thest-ructure built around it.

The invention'consists generally in various constructions and combinations, all as hereinafter described, and particularly pointed out in the claims. 4

In the accompanying drawings, forming part of this specification, Figure 1 is a top view of collapsible core or mold used in the Fig. 2 is a vertical sectional view on the line 1 2 of Fig. 1. Fig. 3 is a vertical sectional view on the line 3 4 of F ig. l substantially at right angles to the section line of Fig. 2. Fig. t is a detail sectional view on the line 6 of F 1. Fig. 5 is a similar view on the line 7 8 of Fig. 1. Fig. 6 is a de{ tail view illustrating the joint between the sections of the shell of-the mold. Fig. 7 is a detail view showing a portion of the shell in its collapsed position, Fig. 8 is a detail view showing the means fof' attaching the operating-arms to the mold 'shell. Fig. 9 is a top view of a modified c'bnstruction. F ig. 10 is a vertical sectional view of the same. Fig. 11 is a detail view showing the position of one of the wedges between the sections of the mold-shell. Fig. 1') is a top view similar to Fig. 9, showing the device collapsed. Fig. 131s vertical sectional viewol' Fig. 12. Fig. l i is a detail view showing the collapsedposition o'fonc of the wedges. Fig. 15 a detail view showing the manner of attaching the operating-arms to the sections of the moldshcll.

In the drawings we liavc shown the moldshell diwlded into four vertical sections, which we will designate by referenceletter A. There may be a greater or less number of these sections used, as preferred, and all of them forming when in use a substantially cylindrical mold-shell around which the concrete or other structure is formed.

B is a rod centrally arranged with respect to the shell, to which at intervals arms C and D are hinged at their inner ends, as at D, the outer ends of said arms being hinged *to the sections A, as at E and F. These arms have the functions of toggle links or levers, being adapted when standing obliquely with respect to the rod Bto draw in the sections of the shell toward the center and collapsethe mold and to force the saidsecti'ons outwardly to expand the mold-when swung to a position at right angles to th rod B, as shown in Fig. -2. Bymeahs of the slbts E in the connections E between the arm'sC and the sections of the mold the said arms will have a limited initial movement without ailectingthe shell-sections '70 with which they are connected The arms D, however,having an ordinarypivotal connection with their sections will immediately operate them as soon as the rod B is moved. Consequently the shell-sections connected 7 5 with the armsD will move ahead of the others both when the shell is extended and collapsed, and in the operation of the mold the shell-sections, connected, respectively, to the arms C and D, will not. interfere with one another. We prefer to provide slotted lugs J secured at intervals to the sections of the shell and a ring or hoop I passing through the slots in said lugs for the purpose of'holdingthasections of the shell in their proper relative po- .85 sition, but allowing them to be moved in and out to contractor expand the mold.-. A cover G may be provided for the niold.

The use of the slots E is not absolutely es sential. In some instances the difference in '0 the travel of the arms D and C will be sufiicient to produce the desired movement of the sections-L. 6., the arms (has indicated in. Fig.2, are substantially at right angles'to the rod B, and the arms D are obliquely arranged with respect to said rod when in their locked position. When, therefore, the rod B is moved lengthwise, the arms D will have a greater initial movement than the arms C, and consequently the sections connected with the arms D will move before those con nected with the arms 0, and practically the sameresult istherefore obtained without the employment of the 'slots E. I

In Fig. 9 we have shown a modified construction which consists in providing ashcll composed, preferably, of three vertical sections l1, between the joints of which a corresponding number of vertical bars M, wedgeshaped in crosssection, are arranged for the purpose of separating or spreading the contiguous edges of the sections. Arod O is con centrically arranged with respect td the shell and is pivotally connected by arms P and R,

. suitable size, and there may be any suitable number of them, according to the characterof the structure that is being built.

An apparatus of this kind can he used in the manufacture of hollow building-blocks, posts, ,&c., and in the construction of tanks, conduits, sewers, or any hollow structure of plastic material which sets or hardens after being formed around a mold.

In the operation of the modified construc tion the wedge bars engaging the beveled contiguous edges of the shell-sections will force them apart and expand the mold to its normalworking position. .When the mold is collapsed, the wedge bars will be withdrawn and allow the contraction of the shell-sec- ,tionsjand their separation from the inner surface of thestructure formed around them.

We cla m as our 1nvention- 1. A cylindrical mold comprising a' shell divided vertically into a series of sections, a

. rod longitudinally movable in said mold,

arms pivotally connecting said rod at intervals with the respective shell-sections, and

means whereby some of said sections will move before the other sections in expanding v and c'ollapsing the mold, substantially as de' scribed.

2. A collapsible mold comprising a shell Jdivided vertically into a series of sections, a

v series of arms pivotally connectedto said sections, an operating-rod connected with said armsand some of said arms having a sliding attachment with their sections, for the purpose specified. t

' collapsible cylindrical mold divided I vertically into aseries of sections, bars wedgeshaped in cross-section provided between the g'contiguous edges of the shell-sections, arms pivotally connected to said shell-sections and to ,said .bars respectively, an operating-re ivotally attached to the inner ends of said ars, ,and' means wherelo'ysaidmold-sections will remain stationary'during a'predetermined nitial movement of" said. wedge bars in both directions, substantially as described.

4. A collapsible mold comprising a shell 2 divided vertically into independent sections, vertical bars wedge-shaped in cross-section provided between the contiguous edges of i said sections, an operating-rod, arms pivotl ally connecting said rod with said shell-sec- I ing slotted lugs, and a hoop passing through able inand out to contract or expand the mold, substantially as described.

6. A mold comprising a shell divided longitudinally into a series of sections, a rod longitudinally movable in said mold, arms piv- 'otally connecting said rodat intervals with the respective shell-sections and some of said than the angles formed by other arms and said rod, for the purpose specified,

of sections, bars wedge-shaped in cross-section, provided between contiguous edges of the shell-sections, arms pivotally connected to said shell-sections and to said bars respectively, an operating-rod pivotally attached to the inner ends of said bars the arms connecting said rod with said shell-sections being substantially at right angles to said rod, and the arms connecting said rod and said bars being obliquely arranged with respect to saidrod when the mold is in its expanded position, substantially as described.

8. A iIlOld divided longitudinally into a series of sections, bars Wedge-shaped in crosssection provided between the contiguous edges of the shell-sections, arms pivotally connected to said shell-sections and to said bars respectively, an operating-rod pivotally at tached to the inner ends ofsaid bars, and means whereby said mold-sections will remain stationary during a predetermined initial movement of said Wedge bars in both directions, substantially as described. ln testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, October 1, 1904.

FRANCIS MAXWELL HENRY.

JOHN GUNN MADDEN. Witnesses:

WILLIAM STUART JAMIESON, ELLA BREWER.

divided vertically into a series of sections, an-

sections having a series of inwardly-projectsaid lugs and whereon said sections are slid arms. forming greater angles with said rod 7 A cylindrical mold divided into a series

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