US1405212A - Concrete form - Google Patents

Description

.I. H. HILTON.

CONCRETE FORM. APPLICATION FILED MAY 23, 1918.

1,405,212; Patented Jan. 31,1922.

I T0561 whom it hcaylconcern:

UNITED srArEsfi' Jenn HARRYHILTON, or CLEVELAND, OHIO, IASSIGNOR TO THE irvnnho'mc rnnssnn PATENT o en,

STEEL GOMPANY, OEICLEV ELAND, onian eonPonATI'on on 03103) Application filed May 23,

'Be it known that 1, JOHN; HARRY HIL ON, a citizen of, the United States, residing at Cleveland, in the county ofCuyahoga; and State-of Ohio, have-invented a certain new and useful Improvement in Concrete Forms, of which the following is a full, clear and exact description, reference being-had to the accompanying drawings] I I, j This invention relates generally to concrete'f orms, employed in the ma king of cement or concrete structures, andmorepar ticularly to a form of'theinverted pan type now used in the formation of ceilings and roofs. In, concrete formsjof this general type it has been customary, to provide some; separate means for connecting adjacent form sections, and besides requiring separate articles of manufactureto effect. this l connec-- tions considerable tilnejandu labor are involved iii-properly placing and arranging thesaid connecting meansand pan forms.

One obj ectof my present invention, therefore, is to'simplify and cheapen the form v as a whole so that";great economywill be had both in zrnanufacture and in installation for'u e-U =f The invention also has for its-object to provide a concrete form capablefof producing' aceiling. on roof of the girder, slab or dome type; .l a r Incidentally to the above named objects, the{ invention involves providing a. form which in itself will be capable of vsustaining all-of the weight of the plastic mass thereby dispensing with the separate supporting and holding means heretofore employed this type-of concrete forms; and another object of;, the-' invention is to provide a concrete I form embodying these various characteristics which shallalso b'ei'capable of expansive adjustments whereby said forms can beuscd for the formation of ceilings or roofs of various ,areash r ,7 II 5 VAnother objectofthe invention isto provide a concrete form for ceilings and roofs, which, on account ofits structural strength, will require a minimum-amount of shoring. With thesevariousobjects in view, the invention'consists broadly in providing a concrete formfof the. type described-with integral side supports preferably I in the, form, of channel members, each support comprlsing in its make-up at least one horizontal member or portion and one vertical member .1 CONCRETE roam. I 7

I 'iSpecincation of Letters Patent.

at/91pm 922. {Serial No. 256,111. I I, 3

. '7 cr -portion, said-horizontal andvertical portions being united.

, The invention consistslalso in certain novel features of 'constructiom and themanner of comb ning thesame,; 9,11 of-which will be fully set forth inthedetailed; description and 7 pointed out in theappended claimsa I I In the drawings forming a part of this specification, I have shown several j embodimentsofmy invention and in which Fi l isa vertical sectional view of aplurality of -mold sections arranged towprovide, a beamed or girder ceiling; Fig. 2 is a simi.- lar view showing the mold sections arranged toprovide a flat ceiling;yF 3 aaview "showing the assemblageemployed fo ypro ducing a crown'or dome ceiling Figgisa slightly modified constructionof Eig, v 1 Figs. '5 and 6 show sectional 'views 0fstillfurther modifications; and Fig.' 7 is a sectional' elevation showing the manner-gaff bridging or connectingitvvo mold sectionsby means of an, extension section. I i I In the practical embodiment of my inven t on I employ a sheet-metal panaA off s uitable thickness, said pan being made in lengths ofsiiz, eight orten feet as.,desired andthe wldth of saidfpan is ordinarily from twenty to twenty-four inches, This pan is given any, suitable contour according to -the load to befcarried and is used inverted as shown, a series of suchpans being arranged side by [side-so as to provide agirderorv beamed I I portion 7' B of :the I ceiling, :therebetween, while the flat or slab portion C, of the ceiling is carried by the central portion of th pa i Heretofore it hasbeen custoinary to-arrange the ends of thepans: in some sort of channel support, or they have been con;

nected by clamps or fastening ,means to ya sofiitrboard and these channels or supports have in turn been arranged upon stringers. supported shoring. These connecting devices, heretofore employed,-are obj ectionable owing to thelmultiplic'ityof parts which require connection either upon the upper or lower side" and it is therefore Withthe idea of eliminating a number of these parts andproviding a structure whichfwill in itself have all the strength necessary; to sup ort theforms that my present type of orni has been devised and this I accomplishlby providing a channel member ,1) at each edge of. the pan, each channelmember'having an upright or vertical portion and'upper and lower horizontalportions. In. other words, the channel member stands on edge or side. It will be noted, therefore, that the pan portion of the mold ends at the point X, and the channel member D begins at this point. 7

In operatiomthe pans with integral channel members are arranged so as to bring the upright. portions of the channel members togetherand'any suitable form of lockin connection can be employed such as a s otted bolt E and' key wedgeF. The channel members rest upon'stringers'G which are arranged at suitable intervals according to the length of the pan and'when the pans or mold sections arethus' arranged side by side and connected together, a complete ceiling mold of the girder'type is provided, and the channelmembers not only form a suitable means forconnecting themol'd sections but also provide ample supports capable of carrying the load imposed thereon. r

In F ig. 7 I have shown the manner of making an extension by means of a short or intermediate'pan ormold section A? which'is interposed between two pans or mold sections of the adopted length. In,

this construction" the usual stringers G rest upon a cross pieceH and an intermediate stringer I is arranged centrally of the 1nterm'ediate or connecting sections.

In Fig. Q'the pan or mold sectionlA is nearly flat and can be curved either upward y as show-n in'full lines or downwardly as shown in dotted linesand as. this curvature is verys'light a ceilingproduced'upon these forms willbeipractically of theflat' or slab formation. 'Thechannel member D is formed at each edge of the pan A? as previously described and the mold sections are united or connected together exactly the same as heretofore, the channel members alsoresting .upon stringers and constituting the connecting support for the mold sec tion, r

In connection with the flat mold sections A I may'employ a plurality of dome or crown sections K asshown in Fig. 3, each dome or crown section K formed of sheet metaland comprising sideportions K, top' portion K and foot portions K If desired:

these oot portions could be omitted. -Thes'e domes or crowns K are, arranged in any do sired'manner so far as spacing is concerned uponthe'flat or slab pans and then the concrete is poured as usual and the ceiling when formed will be of the dome or crown type, and it will be understood that when the flat pans'are removed the domes or crowns will beremoved at the same time. a V

'In connection with the flat. or slab pan sections A provided with channel members ateach edge I may also employ girder'pans A having an angle edge A at -each side thereof, the vertical end of'said angle being slab forms, and in case flat. or slab formsof channel members are not to be had, the

supports may be sufiicient without the aid of channel members. I

In each construction it will be understood that slotted bolts and key w'edges'or other forms of locking devices are employed for locking the form "sections together. After inserted between the channel members of the the cement or concrete has set a s'uflicient length of time, the locking means are moved and the pans or forms "taken down and this can be accomplished by removing all ofthe forms at once-orin installments according to the nature 'ofthe work'being done. a

- By the employment of the channel members placed together as shown,"it-'is obvious that an exceedingly strong and durable support is provided'for the'shaping portions of the mold, and by forming these channel members integral with the mold sections an exceedingly simple? and inexpensive form of mold is provided, one which can be used over andover, as the-bends or angles necessary 1n the formation'of the various channel IIIGIIlbBISWlll provide stlff or strengthening portions capable of'wi-thstanding consider-- able usage without shapement.

The concrete shown an'd describe'd is also capable of being indentation or other mis nested toa certain extent and the forms are capable of being'completelynested."

Having thus described my invention, what I claim is:-' I

1. The'combination with a' pair of forms,

' each having depending edges, offlanged members arranged 'in pairs and between which the depending edges of t'heforms are? arranged andmeans connecting'said flanged members and depending edges. 7

2. The combination with a pairof forms having laterally projecting edges, said edges having --depending "portions, of a pair of flanged members, and means for'connecting said depending bers. I

3. The combination with a pair of fbrms having depending edges, of a second air of forms having flanged and depen ing edges, a; pairof flanged members, and means for connecting'fsa idflanged members 'and the dependingp'ortions' of said"forms.-,

portions and flanged mem- 5 JOHN HARRY HILTON. f

- In testimony. whereof, hereunto afiix my:

signature.

form constructed as herein

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