US924049A

US924049A - Flue or tube expander.

Info

Publication number: US924049A
Application number: US46801508A
Authority: US
Inventors: John W Faessler
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-12-17
Filing date: 1908-12-17
Publication date: 1909-06-08
Anticipated expiration: 1926-06-08

Description

Patented June 8, 1909.

WW) m fi s rrrrns FLUE OR TUBE EXPANDER.

Specification of Letters Patent.

Patented June 190%).

Application hie-.1 December 17, 1908'. Sell-Til No. 465.015.

To all vi /11ml (It may; ronwrn:

Be it known that .l, Jonx n. iflxnssmn, :L citizen of the United Stiles, and resident of Mobrrly, .dissouri, have llHi-H'l'tiil certain new and useful lniprovommits in Fine or Tube llxpnnders, of which the following is :i,

pending tool, the object of my invention being to construct it simple tool to be used in connectionwith a pneunmtic hammer or the like for expanding the ends of boiler lines or tubes in a boiler sheetor heed, and which tool is so constructcd thet the segmental members of the body ofthe tool are held together in proper position while the tool is in use, and the mandrel olthe tool being so con- 1 structed as to maintain its proper position within the body of the tool whilethe same i is in use.

To the above purposes my inventhmcom sists in certain novel features of constructlon til-hell on the line 22 oi Fig. 1; Fig. 3 is it perspective View of one of the segmental l l I the members 1 members forn'iing the oxpandingbody of;

the tool. i

Referring by numerals to the ziccompaliying drawings, the-body of the expander is lllittlfi up ofn series of segmental inembei's 1, which are in the form of elongated. blocks of hardened metal, the outer fiicesof which are sligl'itly curved in cross section in order that the body may be formed perfectly round when the segmental members 1 are asscmbled. Formed on each member 1,, "a short distance from the outer end thereof, is it lug 2, and the lugs onell of the members combine to form a rib, which, when the tool is in use, engages the boiler flue or tube im llletllttUf-lY adjacent the inside of the sheet or boiler head. I"

l wmcd on the outer surface of each memher i, short distance to the rear of the log 2, is it shoulder 3, and the shoulders on all of the members 1 engage egsinst the end of the toward the l'orwe boiler tube oi ilue and cxpoml the some nirninst the oulci'lnceof the sheet or boiler heard when the tool is inusc. Formed in the outerfacc of each member 1. adjacent the rum end thereof, is notch 4, and the notches of rill of thennn'nl'iers lorn'i ii groove odjitccnt the rear end of the body of the tool in which groove is seated :1 heavy tic ring 5 of rubber or dih'ilOQfOUS 1mitcriitl', although this ring may be in the lorni The inner lares'fi ol the members l are perfectly list and are formed on such lon'gritudimil angles that the opening in thecenter ol the body of the tool tapers end, end tornied integral \viththe reai e'nds of the inenil'iers I are lugs 7, ii hich combiiie'to form at flange around the pening.in' the center of the body of the tool at the rear end thereof.

The mandrel used in (TOIH'IOCl'ilOll with my improved tool comprises a solid cylindrical shank 8, on which is adapted to be engaged the forward end of a pneumatic hammer or like tool, in order that the plunger of said tool Will'strike against the end of said shank 8, and formed integrnl'with the forward end of this shank 8 is a smell cylindrical Slltlllk with which is formed integral a. head 10, on

the exterior of Wlnch 1s fornu d series of list beveled or inclined bearing: faces 1], which, I

whenthe tool is assembled and in use, bear against the corresponding; faces 6 formed oil The rear end of the head 1.0 is cl such size as that an abrupt shoulder 12 formed lielm' cen snid heard and the slnink 9, which shoulder bears against the inner faces of the lugs 7 when the tool is assembled, thus preventing the mandrel from becoming easily disengaged from the body of the tool.

When an expander of my improved construction is in use, the forward portion of the body, made upol the segmental members 1.; is inserted in the end of a boiler flue or tube, as shown in Fig. 1, Mill when the mandrel 8 is'forribly struck with the plui'iger of :1V pneumatic han'iiner or like tool, the lieudlO oi" s'sidmandrel will be forced l'im'vard, and as a, result all of the segmental *n'iei'i'ibers 1 will be uniformly moved outward, which resultsin an expsir-ding action on the end of the tube or this, and as this operation is continued the 'flue or tul efi's ploperly expanded and set in thesheet or boiler head. y

The ring 5 tendsto drew the members 1 together and during the use of the tool main- 'tain's said members in their proper positions.

iii?

moving rearward as the segmental sections.

are drawn to ether b the action of the rim m r I I 4 2w .5. lhe rearward movement ol: the mandrel limited b the en a ement of the shoulder 12 against the lugs 7, and this construction. prevents the mandrel h'oin becoming disen gagged or separated from the body of the expander.

An expanding tool of my improved eonstrnction is veryshnple, strong and durable, be operated by either ahand or a pneumatic hammer, and the mandrel is at all times held in proper position within the body or the tool.

I claiin 1. A tube expander, comprising a body made up of a series of segmental members, elastic means encircling the rear portion of the body for holding the segmental members together, the inner faces of thesegmental members being flat and inclined so as to form a tapered opening through the body, a. mandrel, one end of which novided with a se ries of fiat beveled bearing adapted to engage the corresponding; faces on the mental member... 01' the body, and means formed integral with the rear ends of the segmental inel'nbers for engaging the mandrel and holding the same against withdra 'al from the body.

2. In a flue expander, the combination With a so less of segmental members radially arranged to form a cylindrical body, elastic means encircling the rear portion of the body for holding the segmental members together, there being inclined faces formed. on the inner faces of the segmental members so as to form a rta ered aperture through the body, inword y projecting lugs formed integral with the rear ends ol. the segmental members, of a mandrel, and a tapered head formed integral with one end of said mandrel, which tapered head is provided with flat bearing faces cor responding to the feces formed on the mental members, and tl re being a shoulder fe-rrned between the ta'oored head nd the with one end of the manl'irel, which tapered head fits the taperel'l opening through the cylindrical. body, and the base of said tapered head being engaged by the logs on the segmental members.

4. A tube expander, comprising a body made up of aseries of segmental members. elastic means encircling the body for holding; the members together, there being; a leper-ed opening through the longitudinal cenlcl ol' the body, a tapered mandrel sealed in the tapered. opening, and means carried by rho rear ends of the segmental members i or eogn gi 11,: a portion of the mandrel and holding the same against romwvard rillnlrmral from the body.

5. A line expander, com n'ising 1!. body made up of a series or" scgnncntal members, elastic means encircling the body l'or holding the segmental members together, there being a tapered opening through ll c longitudinal center of the body, inwardly proiecling lugs integral with the rear ends ol the segmental members, a mandrel, a tapered head integral with the forward end of the mandrel, there being a shoulder Formed between the base of the bead. and the body of the mandrel against which shoulder the inwardly pl-ojorting lugs engage to prevent the rearward \rithdrziwal of the mandrel from the body or" the expander.

In testimony whereof, 1 home signed my name to this s 'leci'lieation, in presence of two subscriliiing Witnesses.

JOHN W. FAFJShLER.

Witnesses M. P. SMITH, E. L. WALLAon.