US1445907A - Column mold - Google Patents

Description

Patented Feb. 20, 1923..

j THE'ODORE NOVY, CHICAGO, ILLINIS.

COLUMN MOLD.

Application Vfiled May 29,

To all w hom t may'concem Be it known that I, Trinononn F. NOVY, a citizen of the United States, and a resident of thecity of Chicago, in the county of Cook longitudinal edges ofthe mold having been rheretofore formed by first bending the metal back upon itself and thence radially outwardly therefrom, and followed by bending the outer extremity Aof one of the flanges at a right angle to land across the edge of the other flange, and adjustably tightening the reinforcing ring through the medium of a '25 link, the opposite ends of Which fare respectively pivoted to the ring and to a curved lever manually operated for tightenino' the ring on the mold.

it is, however, 4found in practice that when the longitudinal flanges of the mold are formed as above described, itV is impossible to prevent the entrance of the cement between the irregular jointY formed from bending the metal back upon itself, and that,`

as a result of this leakage, a` fin of cement is formed for the length of the mold, which,

for preserving the sightliness of the column, must be removedat an objectionable expense.l

of time and money and with great care in order tol prevent marring theappearance of the column, following theremoval ofthe tin.

Again, it is found in practice that the employment ofa link respectively pivoted at' its extremities to the ring and to the curved j lever above referred to, is objectionable for the reason that there are no means for locking the lever in its operative position yother than by perforaticns in both the ring and the end of the lever and passing a nail'or pin therethrough, which can only be `when the hole in the lever is inregistry with a hole in the ring and While the leveris opposed by the resistance of the mold, Which not only makes the insertion of the pin diffi- 1920.- serial No. A285,215.

cult, which difficulty vincreases With the rethe. ring.`

rllheobject of this invention. broadly stated, is to have the flanges for'thev opposing 'edges of the mold so formed that cement existance of the moldto the compression of iseflfectively prevented from 'entering the ljoints'y between the edges ofthe mold; 'thatthe ring for the mold shall have a lgreater rangev of adjustment than heretofore, and that the lever for adjusting 'its Itightness shall automatically'lock the ring'inits adjusted position.' f P More 'specifically stated, the object of my invention is to have the longitudinal flanges` for the meeting edges of a mold so constructed as to exclude the possibility of cement entering between them; that the angle v bars commonly used'for strengthening their f joints are prevented from lateral movement j when once locked in their operatii'ev position` against embracing the llanges forming the joint; whereby it is possible and vpracticable to exclude any cement in the mold from entering` the jointg'and to provide the sti'engtheninL` ring of va-mold With a simple, elfective and Vquicklyl `operative tightening device therefor and having afi-ange of 'ad-4 justment commensurate with the? quirements lfor a column mold.

lWith lthese ends in view, my invention nds embodiment in certain features of novelty inthe construction, lcombination and arrangement of parts by Which'the saidobjects are attained, alll as hereinafter fully described Wit-h reference to the accompany greatest re# ing drawings and more parti cularly pointed out in the claims.

In said dravvings,'- Fig. lis a top plan View of `which my invenring for a column mold in tion vfinds its embodiment'.

Fig. Qis aside. elevation yof column mold a reinforcing with the reinforcing ring in its operative position thereon. p n l v Fig. 3 is `a side elevation of the-bent iod for connecting the detached ends of the ring. Fig. lis a detailperspective view-of 'the locking deviceV for the ring asja Whole. i

Figy is anV yenlarged detail in perspective ofthe end ofthe mold and the flanges therefor.

Fig. 6 is an end vieiv'wof the mold. showing the reinforcing angle bars and` the ico flanges of the mold, together with the tightening device therefor in theii` operative positions.

Similar characters of reference indicate the same parts in the several figures of the drawings. f

The mold members 7*2', and of which there may be any number, are, as shown,

, formed of sheet iron more or less thin, preferably in sections telescoping one within theV other, each ofA whichsections may be bent from a single sheet or formed of two sections, the meetii'ig edgesof which, in either event, are bent outwardly and radially in oppositel directions to form flanges 8 and 9, which flanges, adjacent their outer ends, are bent obliquely thereto in the same direction,

to form stops 8a and 9d and so that both the flanges and the bends for their stops will fit closely, one against the other,

The bends for the flanges 8 and 9 are quite sharp, so that the angle iron bars 10 and 11 for" longitudinally stiffening the flanges 8' and 9 may be projected as closely to the circuinferential surface of a mold member as possible, with the use of angle irons opposed to the curved surface of the mold and at the same time have one of the angle irons pro-- 'may be of any other construction and which,

instead of-being` tightened by the clamp shown therein, may be by any other means adapted for the purposes of clamping the flanges at one or both sides of the mold members, as may be.

For the lateral expansion, bulging, and

thereby distortion of the thin circular walls of the column mold from the weight, the force of impact of gravity feed and the ramming down of the concrete, the column mold of my invention is provided, at intervals of its length, withv reinforcing rings one of which, 16', is as usual constructed of angle iron in two sections, connected at onev side by an' outwardly projecting hingeJ 17, and disconnected at their oppositely meeting ends,the diameter of which ring is such as vto provide for tightening it upon the mold membersa rllhe tightening devices for these rings y have heretofore comprised an arm riveted at a point somewhat removed from one of the free ends of the ring, a link pivoted at its extremities respectively to the arm and to a curved lever pivoted to the end of the other ring section, the curved lever being provided at its extremity with a perforation which,

with the tightening of the ring, must be concurrently moved to register with one of a series of perforations in the ring, followed by projecting a nail or pin therethrough, and which is subject to the objection, however, that it is not only difhcult to move the perforations to registry, but to maintain them in registry against the constant resistance of the force of expansion of the tightened mold, but because of tlie'loss of time for retaining their registration until the pin can be inserted therethrough, and that such registration and insertion of the pin require the use of both of the hands of the operator.y

18--18- one of which is provided trans' versely with a series of perforations 19, preferably in staggered arrangement for imparting a wider range of adjustment for tightening the ring on the column member, without unduly weakening the walls between thefper- .fo-rations. On the other member 18. is mounted. a lever 2() by means of ra pivot 21 located at a point removed from the ends of the lever, the extremity of one end of the lever being perforated for securing thereto and preferably against accidental detachment, the stem of a hook or link 22, provided with a U-shaped bend 23, passing through and pivoting the hook in the lever and terminating at its opposite end in a hook 24 adapted to be passed through any of the perforations 19. i i

The pivotal or fulcrum point of the lever 20 is so located with reference to the pivotal point of the hook and its engagement with any one of the perforations is suoli that `when the lever is moved against a resisting force to the position shown in Fig. 1, it will remain in that position until the same force ist applied for moving it in the opposite direction.

The operation for removing the mold consists in first tightly clamping the flanges 8 and 9 thereof upon one or both sides of the mold, as may be, between vthe angle irons 10 and 11 and locking them in their tightened: position, preferably by means of the 'clamp 23 (see 6) pivoted at 24a to a rod 25, passing through the jaws 12 andlS screwthreaded in the jaw 12 and adjustably, by

means of a nut- 26 or some other suitable clamping device adapted for tightening the flanges 8 and 9 suliicient-ly to prevent cement leaking from the mold at any point between the opposing faces of the flanges.

Having once tightened and locked the flanges in their operative position, o-ne or more rings 16 are locked in their operative position surrounding the members of the mold and which may be conveniently done after disengaging the hook 24 from the perfoi'atioiis 19, followedby reeiigaging the hook and then tightening the ring by moving the, lever from its outward position `shown in Fig. d, past the stem of the hook to its locking position shown in F ig. 1, as may be done with one hand while supporting the ring with the other hand, sometimes necessary when the ring is adjusted to an outstanding mold.

TWhen it is found that the ring is not sulficiently tight, the lever is moved outwardly tothe position shown in F ig. 4, and whereupon the hook of the link is Imoved forward to engagement with such one of the perforations 19 in the plate 18 as may be determined will be sufficient for tightening the ring upon but at the same time may be quickly, conveniently and successfully operated with the use of but one hand of the operator rand without the expenditure of an objectionable v amount of force, owing to the degree required for applying the force necessary for tightening' the ring.

Having described my invention, what l claim as new and desire to secure by Letters Patent is:

1. The combination with a column mold of a reinforcing ring, and a tightening device therefor comprising a hand lever piv-y otally connected with one of `,the opposing i longitudinaledges of the ring at a point intermediate its end, a plate secured to and ,ad-l

jacent the other edge ofthe ring,having per-y forations Vadapted to be separately engagedy by the link for adjusting the link in its op-l` erative position against the mold.

2. The combination with a column mold of a reinforcing ring hinged lat one side and open at its diametricallyoppositeside, andl a. tightening devicetherefor consisting of a lever pivot-ally connected intermediate its endsv'with one longitudinal side edge ofthe ring, a perforated plate secured to and projecting from Lthe other longitudinal edge of the ring, and a link pivoted adjacent one end of the lever adaptedfto adjustably engage said perforations wherebyv on swinging the lever inwardly past the link,the link is automatieaiiy locked by the iever in its adjusted f position.

3. The combina-tion with a column mold of 'i i a reinforcing ring hinged at onev side ,and

provided at its diametrically opposite side with a tightening device consisting of a plate i secured adjacent one of its freeends, a lever of the first class pivoted thereon, a laterally projecting plate secured adjacent the other end` of said ring, provided with a series of f perforations, a link pivoted to the short arm j ofthe lever adjacent its end, provided at its free end with a hook adapted to selectively I i i engage vsaid perforations for adjusting the ring to molds varying in Vdiameter and whereby following the tightening of the ring the lever may be swung inwardly toward the ring to a position automatically locking the i j i link in its operatively tightened position.

In witness whereof, l have hereunto set my hand and affixed my seal, this 17th' day of May, A. 13.1920.

THEQDORE F. NGVY.

Witnesses: .v j .i

Y Jno. G. ELLIOTT, H. SLACK.'

firs] l i

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