US819027A

US819027A - Flexible tubing.

Info

Publication number: US819027A
Application number: US26034705A
Authority: US
Inventors: Salvatore Scognamillo
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-05-13
Filing date: 1905-05-13
Publication date: 1906-04-24
Anticipated expiration: 1923-04-24

Description

rA'lBNTED APR. 24, 1906.

S. SCOGNAMILLO. FLEXIBLE TUBING. APPLICATION FILED mnm mos UNITED sures PATENT OFFICE.

FLEXIBLE Specification of Letters Patent.

TUB'ING.

Patented April 24, 1 906.

Application filed Marla, 1905. Serial No. 260,347.

To all whom it may concern.-

Be it known that I, SALVATORE SCOGNA- MiLLo, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Flexible Tubing. of which the following is a specification.

This invention relates to flexible tubing or metallic spiral hose of that type embodying an inner reinforce or tubular core which operates to hold the outer inclosing casing in regular contour and reinforce the same against shocks or bending and at the same time maintains a close movable assemblage of the several parts composing the outer casing.

The primary object of the present form of flexible tubing is to provide means for more effectively holding the coils or members of the outer casing in connected relation with or without the use of an interposed packingstrip. i A further object of the invention is to simplify the construction of the several parts of the tubing and facilitate the assemblage thereof either by mechanism adapted for the urpose or other means.

A still further object of theinvention is to insure an accurate and reliable association of the interlocking members of the coils of the outer casing of the tubing and to effect a permanency of the connected parts or members of the outer casing through the medium of an inner resilient sustaining-coil of wire or a metallic strip. or ribbon which is closely braced against inner portions of the outer casing and having the coils thereof regularly fitting within interspaces between said portions.

With these and other objects and advantages in view the invention consists in the construction and arrangementof parts, which will be morefully hereinafter set forth.

In the drawings, Figure l is a longitudinal vertical section of a portion of a flexible tubingjembod ing the features of the invention. Fig. 2 is a etail longitudinal section of a part of the flexible tubing, showing a slight modification. Fig. 3 is a view similar to Fig 2, showing a further modification. Fig. is a view similar to Figs. 1, 2, and 3, showing a still further modification. Fig. 5 is a longitudinal vertical section of a portion of the flexible tubing, showinga still further modification and embodying the simplified form of the invention.

bled Similar numerals of reference indicate corresponding parts in the views.

The outer or inclosing casing of the flexible tubing consists of a metal strip of suitable width and spirally wound. As shown by Fig. 1, the strip is bent to form a surface member 1 of concave-convex form with the convex side outermost. At one edge the member 1 has an inwardly-projecting L shaped flange 2 and at the o posite edge an inwardly-projecting straight ange 3, continuous with an inner V-shaped locking member 4, terminating at its free end in a horizontal or longitudinally-disposed seat-flange 5. Each surface member 1 and the L-shaped flange 2 thereof provides a pocket or-recess 6 to receive a packing-strip 7, of asbestos or other suitable material, and when the several coils of the inclosing casing are assembled the edge of the surface member carrying the L-shaped flange 2 fits into the space between the flange 3 and the longitudinal seat-flange 5 or partially extends into the intervening space provided by the formation of the V-v sha ed locking member 4. The inner longitudmany-extending portion of the L-shaped flange 2 alines with the seat-flange 5 and completes the pocket or recess 6.

When the packing-strip 7 is disposed in the continuous pocket or recess 6, provided by the coils of the inclosing casin tight joints are formed between the close yassociated members of the coils, and the range of move ment of the several coils is increased by reason of the provision of the recesses between the surface members and formed by the inwardlv-projccted V-shapcd locking members 4. The tubing is completed as to. body structure by association of the outer inclosing casing with an inner spirally-coiled core, which, as shown by Fig. 1, is formed from a. flat strip or ribbon of spring-steel or analogous metal and bent or shaped to have a concave-convex contour in cross-scction, the convex side of the strip when a )plicd being outermost. The several convofutions 8 of this strip and forming the core or sustainingcoil closely (it into the interspaces between the locking members 4 and forcefully bear against the contiguous portions of said members to maintain the coils or convolutions of the outer inclosing casing in positive assemrelatiun and also to reinforce or strengthen said outer casing. The convolutions 8 also resist injurious shocks or blows applied to the outer casing and pre ent irregular bending or deformation of the said casing. The inner coils 8 of the core also assist in preserving the shape of the tubing when the latter is bent regularly in various uses and applications thereof, and particularly when employed as a lam p-bracket or support mg-arm. v

The form of the device shown by Fig. 2 is similar in all respects to that shown by Fig.

1, with the exception ofjthe sustaining-core,

flanges 1(),form1ng a part of each convolution of the metallic strip composing the outer casing. The remaining parts of the structure shown by Fig. 3 are similar to those shown by Figs. 1 and 2 and bear like reference-numerals. The modified form shown by Fig. 4 has an inclosing casing similar in construction to that shown by Figs. 1 and 2, with the exception of a slight variation in the form of the locking members, which in the present instance are constructed as semicircular projections 11. The remaining parts of the easing and the inner core are numbered in Fig. 4 similar to those parts having a like structure in Figs. 1 and Each of the forms of the tubing thus far described, and shown by Figs. 1, 2, 3, and 4, has the seat-flanges 5, terminating in outwardlyprojecting bearing-flanges 12, which contact with the innerconcaved surfaces of the surface members 1 and provide side walls for the pockets or recesses 6 in opposition to the flanges 2 and 10 and also strengthen the in closing casing and assist the convolutions of the inner core or sustaining element in performing their function.

By the use of the packing-strip 7 in the several forms of the. device explained tight joints are produced between the closely-assembled parts of the outer casing, and in the form of the tubing shown by Fig. 3 the packing-strip will close the opening between the flanges'lO and the adjacent portions of the locking members 4 and 1t).

The simplified form of the invention is shown by Fig. 5 and consists of out-orcon cave-convex surface menibers'l 1 without the 1 movable 1n the ad acent space over or into flanges 2 or 10, from which directly extend inwardly-projected angular or V-shapcd locking members 15. The angular locking members 15 have their free extrennt les m the suc cessive convolutions lying closely under tho bend between the surface members and the remaining portions of said locking members, and in the angular int-erspaces between the locking members the convolutions 16 of the core or sustaining-coil are closely lit-ted, the material used for the formation of the core in this instance being wire having a contour triangular in cross-section. In this simplified form of the tubing no pacl ing-stripbr flanges similar to flanges 2, 5, 3, and 10 are used, thus materially reducing the expense of manufacture without in the least detracting from the effectiveness of the tubing o r the positive assemblage of the several convolutions forming the outer casing.

All of the

locking projections

4, 11, and 15 have adjacent outwardly-converging walls or members, so that the convolutions of the core or sustaining-coil may exert a wedging action thereagainst.

The seat-flanges 5, as shown by Figs. 1, 2, 3, and 4, form outer closures or walls for the spaces engaged by the convolutions of thecore or sustaining-coil, and the pressure exerted by the said convolutions on the parts of the tubing enga ed thereby forces the said seat-flanges intoc oser engagement or more positive relation with respect to the cooperating members of the tubing to reliably preserve the pockets in pro er shape and effective in securing the pac 'ingstrip in applied position. In all the forms of the. tubing shown the convolutions of the core or sustaining-coil exert a longitudinal pressure on the inward projections 4 and 11, which provide the seats for said convolutions bearing snu ly and firmly against the projections and holding the seat-flanges, as shown by Figs. 1, 2, 3, and 4, under the outer or surface members. In the modification shown by Fig. 5 the free terminals of the annular looking members 15, as at 15*, are also in the form of flanges which are held ositivcly under the surface members 14, am both the seat-flanges 5 and the flanges 15 form closures with respect to the spaces engaged by the convolutions of the coil inside of the surface members with material advantage in the strength and durability of the tubing. Furthermore, the surface. members of all the forms of the tubing shown have outer convex sides to avoid formation of surface projections, which would be disadvantageous in shapingthe tubing by hand to adapt it. for various uses.

Another similarity in the several forms of the tubing set forth is that one side edge of each surface member whether Hanged, as shown by Figs. 1, 2, 3, and 4, or devoid of a flanged structure, as shown by lig.. 5, is

which it projects and provided by the locking members of either angular or curved form, as shown. g i

The flexible t ubing embodying the features IIO of the invention may be used for any purpose to which it may be ap licable, and further modifications in the s ape of the several Jart-s as Well as details of construction may 6 adopted without departing from the scope of the invention.

Having thus described the invention, what is claimed as new is*- e 1. A flexible tubing consisting of an outer casing composed of 1novably-connected convolutions formed with concave-convex surface members and inwardly-projecting look ing members with contiguous outwarrlly-converging sides, parts of the latter being inclosed by the surface members and forming closures for portions of the spaces between the said locking members, and an inner resilient core having convolntions fitting closely in the spaces provided between the locking members.

A flexible tubing consisting of an outer casing composed of movablyconnected eon' volutions having inwardly-projecting locking members with outwardly-converging contiguous portions, and also formed with concavo-convex surface mei'nbers having their convex sides outermost, the. inwardly-projecting locking members including flange-terminals inclosed by the. said surface members and freely movable in the latter and forming closures for a portion of the spaces between the said locking members, and a resilient sustaining-core having the convolutions thereof closely titted in the said spaces, and bear ing against the outwardly converging portions ol the locking members.

3. A flexible tubing consisting of an outer casing composed of niovably-connected convolutions having inwardly-projecting locking members with outwardly-converging contiguous portions continuous with com-avoconvex surface members and terminal llanges extending longitudinally of the tubing inside ol the surface members, and a resilient core having convolutions snugly bearing against the outwardly-converging locking members.

-l. llexiblo tubing having an inclosing casing romposed ol eonvolutions formed with inwzu'ill \'-projei-ting luchilig' members lcrminating in longitiulinally extending scatllangos and continuous with outer cont-avor-onvox surl'aic members, tlidscat llangcs l'orniing pockets with the said surl'ui-c mombers and freely movable in relation to the latter, a packing-strip mounted in said pockets, and a resilient core having convolutions hearing snugly against the contiguous portions of the inwardly-projecting locking members.

A flexible tubing having an inclosing casing composed of convolutions formed with inwardlyprojecting locking members providing inner and outer spaces between the contiguous portions thereof, the inner spaces converging outwardly and the locking members terminating in longitudinally-extending seat-flanges located. within concavo-con'vex surface members, a packing-strip mounted between the surface members and the seatflanges, and a resilient core having convolutions snugly bearing in the outwardly-converging spaces between the locking members.

6. A flexible tubing having an inclosing casing composed of convolutions formed. with outer surface members continuing at one side into inwardlyprojecting locking members having their contiguous portions converged outwardly and terminating in seat-flanges which project longitudinally with respect to the tubing and lie within the surface members to form pockets with the latter, the oppositc sides of the convolutions having inwarilly-projecting flanges of less extent than the locking members, a packing-strip in the said pockets, and a sustaining-core having its convolutions bearing against the outwardlyconverged portions of the locking members.

7. A flexible tubing having an inclosing casing com posed of convolut-ions formed with outer surface members continuing at one side into imvardlyprojecting locking members having their contiguous portions converged outwardly and terminating in flanges lying within the surface members and extending longitudinally of the tubing, the opposite sides of the surface members having inwardlyprojecting flanges of less extent than the inwardly projecting locking members, and a sustaining-core having its convolutions snugly bearing against the outwardly-converged portions of the locking members.

ln testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SALVATORE S( ()GNA UILLO.

Witnesses:

(ino. W. REA, W. B. lineman.