US1835179A

US1835179A - Flaring tool for shaping pipe ends

Info

Publication number: US1835179A
Application number: US313085A
Authority: US
Inventors: Parker Arthur La Rue
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-10-17
Filing date: 1928-10-17
Publication date: 1931-12-08
Anticipated expiration: 1948-12-08

Description

Dec. 8, 1931. A. LA R. PARKER 1,835,179

FLRING' TOOL FOR SHAPING PIPE ENDS I 4.

Flllfi-dOGI.. 17, 1928 2 SheetS-Sheet l De@ 8, 1931- A. LA R. PARKER 1,835,179

FLARING TOOL FR SHAPING PIPE ENDS FiledOCt. 17, 1928-. 2 Sheets-Sheet 2 f ,l .i 7.

I g 43 2 J 9 44 L9 2 ,31 I la f/ @t f f f 44@ f @l J0 i D 2Q' ,/g' 5] 7l i J1 ss i .23 i? f. I' i U i 1 M304@ n'Patented Dec. 8, 1.931

.ARTHUR LA. RUE PARKER, F CLEVELAND, OHO

FLABING TOOL FOR SHAPING PIPE ENDS Application led October 17, 1928. Serial No. 313,085.

The invention relates to new and useful improvementsl in flaring tools for shaping tubes, and more particularly a flaring tool which may be. used for tapering a tube end preparatory to the securing of the tube to an attaching coupling.

An object of the inventionv is to provide a flaring tool which may be used in. conjunction with a portion of the'coupling by which ju)y the tube is to'be attached later, for flaring theend of the tube for such attachment, and in particular to employ the coupling portion which surrounds the tube for such purpose.

Another object of the invention is to provide a flaring tool of the above type which includes a body portion adapted to be attached in a predetermined position to a coupling member, and a flaring plunger which may be driven into the end of the tube placed 2o in thev coupling member for flaring the end of the tube so as to cause the flared end of the tube to snugly fit the seat on the cous pling member associated with the flaring tool. /f A further object of the invention is to provide the parts of the flaring tool for cooperation with the tube-surrounding portion of the coupling so that the gaging or measurement of the tool is automatically accomplished in inserting it in position in the said tube-surrounding portion of the coupling so that a flare of a predetermined size is obtained directly. y

These and other objects will in part bepbvious and will in part be more fully disclosed. l

l In the/drawings:

Figure 1 is a side view of the flaring tool embodying the improvements, also showing a portion of a coupling with which it may be associated for the flaring of the end' of the tube.

Fig. 2 is a vertical section through the flaring tool after it has been attached to the coupling and a tube inserted in position for daring. I l

Fig. 3 is a view similar to Fig. 2, but showing the tube as flared by the flaring tool, and the flared end of the tube brought into close fitting contact with the tapered seat onythel coupling member. v

Fig. 4. shows the tube and coupling which are' used in connection with the flaring tool v after the flaring tool has been removed and 4the portion of the coupling is ready vto receive the other member of the coupling.

Fig. 5 shows a modified form of the flaring tool for use in conjunction with a slightly different coupling portion.

Fig. 6 shows thefparts of Fig. 5, in they formed position.

Fig. 7 is a further modification of the flaring tool, and

Fig. 8 'shows the position. i

The invention is directed broadly to a flaring tool for llaring the end of a tube which is secured to a coupling by said flared end. The flaring tool includes a body member which is adapted to be secured to the nut portion of a coupling which afterward surrounds the tube, and in a predetermined position thereon. Mounted within this body member is a plunger which is free to move endwise in the body member to a limited extent. The inner end of the plunger is `formed with a head having atapered face which is adapted to enter the end of the tube. The body portion isthreaded onto the nut portion of the coupling, then the tube is inserted and makes contact with ythe flaring head of the tool, with the plunger retracted to the full limit from the body member, 4after which the tube is held in the hand and a blow struck against the plunger, which will cause' the tapered end on the plungerto flare the end of the tube. The extent to which the end isvflared is limited by the seat of the nut portion of the coupling. i l

Referring more in detail to the drawings, in Figs. 1 to 4 the Haring tool consists of a parts of 7 in formed bodyportion 1 and a plunger 2 having a head 3 which is preferably formed of nickel steel treated so that it is not easily distorted when subjected to hammer blows. The body portion l is formed with an interior recess, the outer end of which is threaded as indicated at 4. The recess extends all the way through the body portion so that in a measure it is of vso ` parts in assembled position.

sleeve-form. The portion 5 of the recess is of smaller diameter than the remainder of the recess. On the lower end of the plunger 2 is a tapered head 6, which tapered head is provided with a shoulder 7 adapted to engage the shoulder between the portion 5 of the recess and the threaded portion of thc recess. This limits the outward movement ofthe plunger.

This flaring tool is adapted to be used in conjunction with the nut portion of a coupling, being that portion which surrounds the tube during the final assembly of the coupling; and the flaring tool cooperates with this portion of the coupling so that the flare is established upon and is determined by the shape of this portion itself, so that there is absolute accuracy in the shape of the flared end when so formed. In Figsl to 4, the nut portion 8 is a continuous ring and is formed with external screw-threads 10 extending from its shoulder 9: such a type of coupling `being shown in my Patent No. 1,619,755, granted March 1, 1927. At the end of the 11a. is threaded onto this nut portion 8 of the coupling until the lower end of the body portion engages the shoulder 9. This place-s the fiar` ing tool in a predetermined position on the nut portion of the coupling and holds the A tube end which is to be joined lto the coupling is inserted through the nut portion 8 until it engages a flared end of the plunger. rl`he plunger is then moved outward in the body portion until the shoulder 7 limits the movement thereof.

The position of the body portion on the coupling member and the moving of the plunger into engagement with the shoulder, insures that the tube end will be extended into the Haring tool and into the nut portion of the coupling just the desired extent 'for flaring the end thereof. In other words, the flaring tool limits the distance which the tube can be flared the extending sb oulder 10a bevond the threads 10 is preferably designed to form a close fit withV internal wall 3n of the body member 1, for assisting in this effect. After the parts have been placed as stated, then the workman holds the tube in one hand while a blow is struck against the cap 3 of the plunger. Thisforces the tapered end of the plunger into the tube, and causes the end of the tube to be flared. The extent to which the tube is flared is limited by the flared end 11 of the tube contacting'with the seat 11a of the nut portion of the coupling. gether with the nut portion of the coupling, limits the extent of the flared end of the tube and serves as a die inthe flaring of the tube. This'insures that the flared end of the tube will firmly fit against the seat on the nut portion.

The tool, to-

Although. the plunger may be struck with .considerable force` it is impossible to materially damage or distort the nut portion, as the latter has a smooth, snug fit inthe flaring tool. There is, of course, some tendency to expand the tube slightly within the nut por- A tion, and this takes up the tolerance in the nut portion 8, although the expansion is not enough to make the nut portion grip the tube. All of the parts of the tool are preferably made of steel. y

In the form of construction shown in Figs. 5 and 6, the parts are arranged similary to those of the forms of Figs. 1 to 4, except that the coupling portion 28 surrounding the tube is formed with internal screw-threads 30 to cooperate with external. screw-threads 24 formed on the body portion 21 of the flaring tool which has a guide passage 25 for the plunger 2. In operation, the tube is inserted through the channel of the coupling portion 28 until it is in contact with the tapered head 6 of the plunger 2 in the most withdrawn position of the latter: This establishes the size of the flared end 31 to be formed. The

head 3 is now struck as before whereby to drive the tapered head 6 into the tube to form the latter in conjunction with the tapered seat 31a of the coupling portion 28. It will be noted that the Vshoulder 27 serves to ixedly establish the measuring position of the tapered head 6.

The modification shown in Figs. 7 and 8 is simplified by the eliminating of a relatively movable plunger. In this structure, the coupling portion 48 is formed with screwthreads 50 to engage the cooperating threads 44 on the plug 43. Thisplug 43 itself has a tapered head 6 as before which is to form the flared end of the tube in conjunction with the tapered seat 50a-on the coupling portion 48. In operation, the tube is slipped into the channel through the coupling portion 48 until it comes in contact with the tapered head 6. A blow or blows upon the end of the plug 43 will cause the tube to expand into a flare 51 at its end, while both the coupling portion 48 and the plug 43 make a relative movement with respect to the tube.

In each instance, it will bevnoted that the

respective coupling portion

8, 28 or 48'which is later to surround the tube in establishing the coupling itself, is placed upon the tube and employed as a matrix o'r anvil upon which the flared end' 11, 31 or 51 is shaped by a tapered head operating upon the inside of the tube. In other words, the exterior of this flared end of the tube is formed upon the selfsame seat upon which it, is to be located when in position in the coupling.

It is obvious that the invention is not limited to the forms of execution shown, but that it may be applied in many ways within the scope of the appended claims.

What I` claim as new and desire to secure by Letters Patent is l. A flaring tool including a body portion adapted to be attached to a coupling member having a tapered seat for engaging the ilared end of a tube, and a plunger movable in said body portion and having a tapered head adapted to enter the, end ot 'the tube when said plunger is moved Ainwardly for Haring the end of the tube, said tapered seat on the coupling member being adapted to limit the movement of the plunger so that the end of the tube is flared to :tit said seat, said plunger and said body portion having means for limiting the outward movement of the plunger so as to properly position the tube for the flaring of the end thereof to the desired extent.

2. A aring tool including a bodyl portion adapted to be attached to a coupling member having 'a tapered seat for engaging the flared endof a tube, and a plunger movable in said body portion and having a tapered head adapted to enter the end of the tube when said plunger is moved inwardly for flaring the end of the tube, said tapered seat on the coupling member being adapted to limit the movement of the plunger so that the end of the tube is Hared to it said seat, said plunger and said body portion having means for limiting the outward movement of the plunger so as -to properly position the eter at the other end, said other end being in,

ternally threaded, said plunger having enlarged heads at its ends, the headat the end inside the body` portion being substantially of the large inside diameter of the bodyv portion and shaped to establish the flare on the end of the tube. Y

In testimony whereof, I aiix my signature.

ARTHUR LA RUE PARKER.

tube for the iaring of the end thereof to I the desired extent, said plunger having av cap adapted to be struck a blow for the moving of the plunger to flare the tube.

3. In a flaring tool for forming a flared end on a tube preparatory to forming therewith a coupling, a member adapted later to form the gland for the coupling and providing a seat, a body having means for attaching said member thereto, a die to form the inner surface of said iared end, said body including means to locate and guide said die, said member being adapted to be seated around the tube withthe body attached thereto whereby said seat can serve as a.

matrix to cooperate with said die to form said flared end, and thereafter said seat can serve in the coupling as a compression member acting upon said flared end.

4. A flaring tool for forming a tube for assembly in a coupling having a nut portion comprising a continuous ring surrounding the tube, said tool including a body portion I adapted to be attached to said nut portion and having a recess in axial alinement with the tube receiving opening of said nut po-rtion, said recess having a cylindrical portion of lesser diameter at the end away from the nut portion, a plunger axially slidable'in said cylindrical portion and having a iiareshaping end insidesaid recess of greater diameter than said cylindrical portion, and a striking head secured to the outer end of said