US828931A - Concrete column and the like. - Google Patents

Description

PATENTED AUG, 21 190-6.

R. A. CUMMINGS. CONCRETE COLUMN AND THE LIKE.

APPLIGATION FILED OUT. 22. 1904.

WITNESSES.

ROBERT A. CUMMINGS, CF BEAVER, PENNSYLVANIA.

C QNQRETE COLUMN AND THE LIKE.

No. s2s,es1.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed October 22, 1904. Serial No. 229,635-

To all whom it may concern.-

Be it known that 1, ROBERT A. Cum Lines, a resident of Beaver, in the county of Beaver and State of Pennsylvania, have invented a new and useful Improvement in Concrete Columns and the Like; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to concrete columns, I

piles, struts, and the like used in bridges, viaducts, docks, other structures.

The object of my invention is to provide a column, ile, or strut which is composed mainly o cement or concrete and whichwill' carry a very heavy load.

Concrete or cement possesses great com pressive stren th when properly constructed and supporte and it is not affected by fire, water, or other elements. For these reasons it is highly desirable in many building constructions. It possesses, however, slight tensile strength, heavy loads the concrete will be forced'apart laterally, and thus fracture the column.

' In my Patent No. 764,883, July 12, 1904, I have described a column construction wherein the fracturing due to the lateral spreading of the-concrete is overcome, this being accomplished by surrounding the main body of the concrete with .a series of flat metallic bands, which will prevent the concrete from spreading, and consequently from fracturing.

The present invention is an improvement on the column described in my aforesaid patent, the object being to simplify the construction of the bands and also of the longitudinal rods and to provide improved means which can be applied at the place of building the column for uniting the ends of the strips to form a continuous band and to hold the metallic parts in proper position with reference to the casin and also to provide means for holdin the bands from falling down.

' To t ese ends the invention consists in details of construction and arrangement hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical section through a column con- Flg. 2'

strueted accordingto my invention. is a horizontal section therethrough. Fig. 3 shows the preferred manner of uniting the ends of the strips to form continuous bands. Fig. 4 shows amodification thereof. Fig. 5 is a view of a suitable tool for forming the fireproof buildings, andso that when subjected to very joint shown in Fi 3. Fig. 6 is a perspective view of the clip i or holding the bands from Fig. 7 is a similar view showing a modification, and Fi 8 is a vertical section showing a modified Iorm of column.

In the drawings the concrete is shown at 1 and the vertical rods or reinforcing members at 2. The latter may be of various ,forms, either round or flat, and may be variously located, depending upon the size and shape of the column. In Fig. 2 four rods are shown located substantially ninety degrees apart and near the side faces of the column, but so that they are entirely embedded or enveloped by the concrete, and thus protected-from the elements. I

At suitable intervals in the column are embedded strips or bands 3 of metal of suitable size and width, so as to prevent the concrete from spreading laterally. These strips have their ends connected, so as to form continuous'bands which encircle the main body of the concrete composing the column. Each falling down.

ous strip having its two ends united, or each band may be made up of a plurality of strips having their meeting ends united, and thus formin the continuous band. In the drawings I two strips with the ends thereof united; but I wish it understood that I do not exclude 'a construction wherein the band is made of a sin 1e or of more than two united strips. The

able way-such, for instance, as by means of the rivets 5, (shown in Fig. 4, but preferably by having the ends overlapped and then bent into reverse curved form, such as shown in Fig. 3, so as to form, in efiect, two hooks 6 and 7. veniently accomplished at the place of build ing the column by means of a suitable tool, such as shown in Fi 5, the same havin a handle 8 and a pair 0 fingers or prongs 9, etween which the overlapped strips will be placed, andthen by giving said-'toola halfturn the strips will be bentinto" the reflex form shown in Fig.3, thus forming a secure joint may be hammered flat, if desired. The extreme end of the outermost lap will in all cases be bent outwardly, as at 10, thus forming a spacing-piece for contacting with the mold or casing 11 and holding the metal portions a proper distance away from said casing,

en s of'these bands will be united in any suit-' band may be composed of a single continu ave shown each band composed of This bending of the strips can be con- 5 and tight interlocking connection. This 2o firmly to said me'mbers.

so that the concrete when filled around the same will thoroughly conceal and embed all portions of the metallic structure. The bands 3 encircle the longitudinal rods 5 or members 2 and prefer-ably are of general circular form, as shown in Fig. 2. When only a single longitudinal rod 2 isprovided at each place, as in Figs. 1 and 2, means is provided to keep the bands .ifrom falling down and to hold the same in place until the con- For this lpurcrete is built around the Esme; pose I' use suitable clipsjllor attaching the same to the rods. Thes 'ps may best various forms; but I preler use a sheet-metal 5 member having a lzioc ly '12 ton es 'or fingers projecting iirom the two edges it ereof. Some of these tongues. or lingers 1-3 will he bentaround the longitudinal members 2, as shown in Figs. 6 and 7, to secure the clips Tl-1e hands -3 will either be inserted between the body of the clip 12 and rod 2, as shown Fig. 6, and will be prevented bythe encircling lingers dropping down or else the band will he helld the body of the clip, as shown in, i 7, orlby a combinationefbojh. 'Gthersdf t e lateralprojecting fingersof *the dlipswilll iri'e hurried outwardly, as -shoiim at 16,'so as'to nontact 0 with the casingor mold l l and held the metal-- lic members a proper distance away therefrom. These clips-neednotlwe l'isedwn longitudinal bars unless sodesi-redgaadif used on the longitudinal bars at the points where 5 the ends 'of the bands meet and where the' bands have the outwardly tu med fingers N) then the fingers 1 6 on the clips not be turned outwardly to contact with the casing but at other points where there is no eat-- turned end on the hand these clips will have some of their fingers turned outwardly to serve as the spacing members to con tact with the casing' y In Fig. 8 is shownainodificatio'nwherein flhe 5 bands 3 are heldibe'tween two reds '17,one'=inside the bands and the other outside t he-sarine v said rods being twisted together intermediate the adjacent bands, as at' 18gas may be conveniently done by inserting a bar be twee'n 5o,said rods and turning the same. In this modification the clips can be dispensed with except at places where the fingers 1 6=a*1"e necessary to hold the longitudinal members away from the casing.

After the metal structure has been built up in the manner specified the-concrete will be filled into the casing and around the metal members, entirely envelo andenrbedding the lon itudinal rc ls, e 5 ends, and the clips. T e rojectingends l llofthe ban'ds to gether wit the projecting finger-s 16 of the clips, hold the metallic parts in pro er {Josie tion relative to the.='casing,-=and the o ips=12 er twisted rods of Fig. '8 hold the bands from slidingdown. As a result the column has the metallic members uniformly and properly distributed in the concrete, and all portions of the metallic parts are completely enveloped by the concrete, so that said metallic parts cannot be affected by the elements.

The column described is exceedingly strong, this resulting in partiirom the uniform distribution of the metallic members therein, but mostly from the fact that the bands preyent the concrete from spreading laterall 7 5 andthus fracturing. The bands can beordinary sheet-metal bands of the desired width and of any desired lengths. Indeed, odd lengths can be used at the place of construc- *tion lay merely bending their ends to term the 8o interlocking joint shown in Fig. 3. 'lhe clips are thin sheetmetal members stamped into form with the projecting fingers on theiredges. These fingers can be easily bent at the place of oonstruction, so as to attach the clips "to the longitudinal rods and to space the metal lic structure from the casing. The bands and clips'are 'clieap and-easy or application.

What I claim -is ll. Accln'ism, pile or the like, comprising a e series of metallic strips or hands running transversely of the column and having their ends iinited to form continuous bands and having an "extreme end portion bent outwardly to tlorm a spacing member 'lor con- 5 tac tiisg with the mold or casing, and con "orete or the like enveloping and embedding said bands.

ilnolu'mn, pile or the like, comprising a series cl [reds or strips extending longitndire nallly of the column, a series of metallic strips or bamds running transverselybf the column and having their ends united :to 'iorm continue hands and having extreme end portions bent outwardly to term spacing 'irnem leers ior so eenta'cting with the mold or casing, and concrete'er the like enveloping and embedding said bandsand rods. v

3. A'column, pile or the like, comprising a series metallic strips provided with inter locking end portions and'united thereby te ie-rm continuous bands transversely of the column and having extreme end pere tie'nshent outwardly to form 'a spacing member for contactingwi th the-mold e1" e'a-sn:

rug, and =concrete or the like enveloping and embedding'said bands.

4. Acolunm,'pile or the likefoomprising a series of rods or strips extending longitudh sally of the column, a series ofmetaillic strips series-ofmetallic strips ha ing their ends heat a into hooks and united thereby to form continuous bands and running transversely of the column, and concrete or the like enveloping and embedding said bands.

6. A column, pile or the like, comprising a series of metallic strips having their ends bent into hooks and united thereby toform continuous bands and having portions bent outwardly to form spacing members for contacting with the mold or casing, and concrete or the like enveloping and embedding said bands.

7. A column, pile or the like, comprising a series of flat metallic strips having their ends lapped and bent into reverse curves to form double hooks and united thereby to form continuous bands, and concrete or the like embedding and enveloping said bands.

8. A column, pile or the like, comprising a series of flat metallic strips having their ends lapped and bent into reverse curves to form double hooks and united thereby to form continuous bands and having the extreme end of the outer lap bent outwardly to form a spacing member for contacting with the mold or casing, and concrete or the like enveloping and embedding said bands.

- 9. A column, pile or the like, comprising a series of rods extending longitudinally of the column, a series of bands running transversely of the column, clips for securing the bands to the rods, said clips having portions projecting outwardly to contact with the mold or casing, and concrete or the like embedding and enveloping said bands and rods.

10. A column, pile or the like, comprisin a seriesof rods extending longitudinally of t e column, a series of bands running transversely of the column, clips comprising metallic membersprovided with projecting fingers some of which are bent in one direction around the rods and others of which are bent outwardl to contact with the casing or mold, an concrete or the like enveloping and embedding said rods and bands.

1 1. A colunm, pile or the like, comprising a series of rods extending longitudinally of the colunm, a series of bands running transversely of the column, clips comprising metallic members provided with projecting fingers some of which are bent in one direction around the rods and others of which are bent outwardly to contact with the casing or mold, said clips having means for engaging the bands, and concrete or the like enveloping and embedding said rods andbands.

In testimony whereof I, the said ROBERT A. CUMMINGS, have hereunto set my hand.

ROBERT A. CUMMINGS. Witnesses:

ROBERT C. TOTTEN, G. C. RAYMOND.

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