US2224031A - Nipple extractor or puller tool - Google Patents

Description

Dec. 3, $40. M. KALBECK NIPPLE EXTRACTOR OR FULLER TOOL Filed Nov. 22, 1937 2 Sheets-Sheet l Dec. 3, 1940. KALBECK 2,224,031

NIPPLE EXTRACTOR OR FULLER TOOL Filed Nov. 22, 1937 2 Sheets-Sheet 2 Patented Dec. 3, 1940 UNITED STATES- NIPPLE .EXTRACTOR oarUnLEa'rooL Martin Kalbeck, Buffalo, N. .Y;, assignor to Crane 00., Chicago, Ill.,a corporation oflllinois Application November 22, 1937, Serial No. 175,808

1 Claim. (01. 2988L2) My invention relatestothatitype of tool useful in the removal of internally positioned radiator nipples'commonly referredto as push nipples, the latter functioning to assemble. individual heating 5 boiler or radiator sections in pressure-tight relation.

Heretofore, it hasibeen a diflicult and relatively expensive operation to remove the push nipples from the radiator sections. during the course of the disassembly thereof. The prevailing practice has been to remove them by means of hammer and chisel, and frequently such practice has obviously resulted in damage to the nipple or to the section itself to such extent that either or 151.1 both were not thereafter useabl-e. Realizing that boiler and radiator sections are expensiveto replace, the objection to these prior relatively harsh methods of removal of the push nipples has been serious, but apparently no practical method of ..removal overcoming these objections; has been devised prior to my invention.

It is therefore one of the principal objects of my invention to provide'a more improved method of removing push nipples and the like, resulting in the rapid extraction of the nipple without injury either to the radiator section or, to. the.

nipple.

Another object has for itspurpose to provide a tool of this character in which the component parts of the tool are assembled and held together in a compact and relatively. easily operable arrangement. a Another important object lies in the provision for a simple tool in which the nipple may be removed quickly by simple manipulation by relatively unskilled labor withoutfear of injury either to the user or to the material. to which the tool is. applied. 7

Another important advantage lies in providing a tool of the character hereinafter described embodying the feature of closing, or contracting the nipple chuck or puller portion of the tool in order to remove the nipple easily from the tool after the latter has been dislodged or freed from the 5 normal tapered peripheral contact with the casting.

Other objects and advantages will become more readily apparent upon referring to the specification inconnection with the accompanying draw- 50 ings, in which preferred embodiments are disclosed and in which Fig. 1 is an assembly view showing the tool applied to a radiator section and the like and wherein the push nipple is about to be removed,

55 but in which the users force to the tool hasv not yet been exercised.

Fig. 2 is a View similar to that disclosed in Fig. 1, except that inthis. view the nipple is shown as virtually withdrawn from the radiator section so after the necessary manual force has been ap- Fig. 3 is: a'fragmentary sectional view showing the arrangement of the internal parts at the head or working end of the extractor tool with the bifurcated jaws of the nipple chuck being shown in the position assumed before the nipple has been withdrawn from the radiator section.

Fig. 4 is afragmentary exterior View of the tool.

Fig. 5 is a fragmentary sectional view similar to that described in connection with Fig. 3, except that the bifurcated jaws of the nipple chuck are. shown in. the position assumed after the nipple. has been withdrawn from the radiator section.

Fig. 6 is an exterior end view of the tool described in Fig. 5.

. Fig. 7 is amodified form of the tool shown in partially fragmentary section.

I Fig. 8 is an exteriorside view of the modified form of tool referred to in connection with Fig. 7.

Similar reference characters refer to similar parts throughout the several views.

Referring now to Fig. 1, the radiator or boiler section is generally designated as A and, as is commonly known to those skilled in the art, the individual boiler or radiator sections are assembled one With the other by means of the tapered push nipples generally referredto as B, making a pressure-tight contact with the walls of a similarly tapered aperture in the section, as indi- I cated.

Thetool consists essentially of three parts, that is a pivotable handle portion It having a bifurcated head and generally designated as I, an anvil or bridge member 2, and a divided nipple chuck comprising a pair of suitably shouldered pulling members 6. The anvil member 2 is connected in a manner hereinafter described in greater detail to the former by means of the flat plates 3, which are afiixed to each side of the anvil member 2 by the machine screws 4. Obviously, the flat plates 3 may be made integrally with the anvil or bridge member 2 without necessitating a substantial change in structure. J ournalled for a portion of its length within the bridge member 2 and extending through the aperture 5 thereof, the divided pulling members 6 are pivotally connected to the bifurcated head member I by means of the hinge pin 1, the said such connection within an arcuately extending groove II, following closely the turning radius determined by the cam surface hereinafter described in greater detail.

The anvil or bridge member 2 is preferably provided with a hollow cylindrically-formed chamber I2 which is made sufficiently large and of such shape so as to easily permit the entrance of the selected size and form of push nipple B sought to be removed. Obviously, the anvil member 2 may be made interchangeable and readily renewable so as to accommodate a variety of sizes of anvils with the same tool. The transverse edge and corner of the head I is provided with a multi-directional extending curved surface I 3 which functions as a cam eccentrically positioned with respect to the pivotal axis established by the pin 1 whereby upon movement of the handle IIJ downwardly to the position shown in Fig. 2, the surface I3 bears against the oppositely disposed surface I5 upon the member 2. For the purpose of holding the nipple securely against axial movement, the divided members 6 are provided with flanged or shouldered ends I4 and over which the nipple must be slipped before the extraction thereof from the section can be accomplished.

The groove II, it will be noted, extends directionally so that at all points it runs parallel to the cam surface I3, and is also made sufiiciently wide so that the pin 9 will not drag or bind upon the side Walls of the groove.

In describing the operation of extracting a push nipple, let it be assumed that the nipple is mounted with relation to theradiator section A as shown in Fig. 1. The pulling members 6 are drawn together or compressed against the action of the spring 8 and are inserted as a unit together through the inner bore or aperture of the ;nipple B, the shoulders i4 bearing against the inner walled periphery of the said aperture by the contact eifected by the flanges I 4. In the course of insertion, upon reaching the end of the nipple port or aperture marking also the limits of the inner portion of the radiator section A, the

flanges I A will emerge from the aperture of the nipple B and thereby cause the flanges to be sprung outwardly due to the action of the spring 8. By this means, the nipple is gripped at the end portion of the said aperture as more clearly shown in Fig. 1. Upon such end grip being obtained, the handle Id of the member I is now moved downwardly and the cam surface I3 immediately commences to make a sliding contact against the surface I5 of the anvil 2. Since the distance between the center of the pin 1 and the cam surface I3 is constantly increasingthe continued movement of such handle downwardly thereupon causes the bifurcated members 6 bearing against the end of the nipple B to be pulled forward or withdrawn in view irof being slidably journalled within the aperture 5.

Since the bridge member 2 bears rigidly against the outer portion of'the radiator section A :adjaoent the nipple aperture, the push nipple Bis dislodged from its tapered contact with the section, and thereupon continues to move axially with the pulling members 6 until ultimately, as

shown more clearly in Fig. 2, the flanged ends I4 together with the nipple B pass within the tapered aperture of the radiator section A to-the position in Fig. 2, at the end of which travelthe handle of the pivoted member I has-traveled substantially through an arc of 90 degrees which travel, of course, may be varied. The nipple is now ready to be removed from the tool itself, and this is accomplished by simply compressing or forcing the pulling members 6 together against the action of the spring, since the nipple which has now become dislodged from the section A may be easily slipped over the shoulders I4 and thus removed from the tool. For the constructions illustrated in Figs. 1 to 6 inclusive, the pin 9 by its travel in the grooves II aids merely in guiding the assembled pivotal movement of the bridge member 2 upon the cam-like surface I 3 with relation to the bifurcated head I.

Referring now to the modified structures shown in Figs. 7 and 8,'in this construction a pivotal pin I similarly is mounted within a bifurcated member I and upon which the divided members 6 are likewise journalled. In this more simple type of construction, the bridge member 2 is likewise provided with a hollow cylindrical chamber I2 and bears against the upper portion thereof by means of the cam surface I3, allowing for the closing together of the bifurcated members-6 by means, of the bearing efiected Within the aperture. 5. Thus when the handle It is moved arcuately downward, pivoting upon the hinge pin 1 and confining its entire end thrust against the upper surface I5 ofthe anvil member 2, the'cam surface I3, for the same reason mentioned in connection with Figs. 1 to 6 inclusive, causes the divided pulling members 6 to be extracted and pulled within the aperture 5. This movement simlarly causes .an axial movement of the nipple outwardly or away from the section A so as to thereupon displace the nipple B, as described in connection with Figs. 1 and 2. In this modified construction it will be noted that the guiding groove II and the'guiding plates 3 are dispensed with, although the mode of operation resulting in extraction does not differ substantially from that result described in Figs. 1 and 2.

It will be obvious to those skilled in this art that numerous modifications may be made within the spirit of my invention, and I desire, therefore, tobe limited only to the extent or the appended claim.

I claim:

An extracting tool comprising an operating lever, a pair of shouldered end pulling members in spacedapart relation, a bridge member substantially enclosing the said pulling members, the said lever having a bifurcated head pivot-ally attached to the said pulling members at the ends opposite the said shoulders, a pair of lates secured to opposite sides of the said bridge member, the said plates having'cantilever ends adjacent the said head and projecting in a plane parallel to the pivotal plane of the said head, a groove in the said head adjacent each cantilever end of the said plates, a guide pin carried by the said cantilever end'of each of the said plates, the

, said guide pin projectingtransversely into the MARTIN KALBECK.

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