US1055571A - Tube-expander. - Google Patents

Description

J. O. TASSEY.

TUBE BXPANDER. APPLICATION FILED Fame). 1912.

2 SHEETS-SHEET 1.

Patented Mar. 11

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2 SHEETS-SHEET Z.

MEMH 3K Qwvemcoz 1 HIozmu a J. C. TASSEY.

TUBE EXPANDER.

APPLICATION FILED 313.19, 1912.

UNITED s'rATEs To all whom. it may concern:

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' TUBE-EXPANDEB.

Original application filed Iay 25 191-1,

Be it known that I, Jon C. 'IAssnY, a citizen of the United States, residing at Nashville, in the county of Davidson and:

5. State of Tennessee, have invented-certain proved construction,

- present application the same in end 4 right hand end as shown in new and useful Improvements in Tube-Expanders; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled.

in the art to. which it appertains to make and use the same.

This invention relates to devices for the-- expansion of the ends of boiler tubes, the being a division of a rior application filed by me May 25, 1911, Serial No. 629,483 such division being made on compliance with the requirement of the Patent Cities.

The primary object of the present invention is to provide a tube expander of 1mby a motor. p

' A further object of the invention is to generally and specifically improve the construction of the several parts comprising a tube expander.

. With these and other objectsin view, the invention consists in. the improved construction, arrangement. and combination of the parts of a tube expander, hereinafter fully described and afterward specifically claimed.

In the accompanying drawings in which I have illustrated a preferred embodiment of my invention, together with as much other-mechanism as is necessary to aproper understanding of this invention, Figure 1 represents a view of the expander 1n side elevation, in place in a motor casing, ready for operation; Fig. 2 represents a view of elevation looking at the Fig. 1; Fig. 3 resents a sectional view taken on the plane indicated by the broken line 8-3 of Fig. 2; Fig. 4 represents a detall view in elevation of apart of the expander head d'etached; Fig. 5 represents a front end elevation of the expander illustrated in Fig. 4; Fig. 6 represents a transverse vertical sectional view taken on the plane indicated by the broken line 6-6 of Fig. 3.

Like reference characters mark the same parts wherever they appear in any -of the figures of the drawings.

Referring specifically to the drawings, the casing for inclosing the motor; and ratchet mechanism for operating my tube expander Specification of Letters Patent.

adapted to be operated Patented Mal-.11, 1913..

Serial No, 629,483. Divided and mi; application flled lebruary 1e, 191a Serialzlio, 615,490.;

{includes substantially oval shaped heads or :ends 20 and curved connecting sides and ;bottom 22" the ointed ends of the oval shaped heads be'i'ngupward, and an additional casing asshown at 28, is secured to the left hand end of the main casing for containing parts" of the motor. There may project from this additional casing 28 a guiding plpe or bar 199' spaced below the tube-expanding mechanism in such position that when inserted into one of the boiler tubes said mechanism-will. be in position to operate on the-next. one above'al1 as described below.

In the casing is a motor which moves arms, not shown, radiating from rings 58' and 59.- surrounding the expanding tool stock 60'which isprovided with longitudinal ribs 61 which at this point transform said stock into a ratchet wheel.

v Extending radially from the rings 58 and 59 are sleeves62 and 63 in which are mounted slidable and rotatable blocks 65 and 66 provided with ratchet teeth 67 and 68 on their inner ends normally held in engage-v ment with the ribs 61 on the stock 60, by springs 71, 72. The stems 69, 70 of the blocks. 65 and 66 are connected by means of blocks. 77 and: 78, links 75, 7:6, and suitable pivot pins 79, 80 and 81, to shafts 82 and 83 which are geared together by pinions 88 and 89, one of said shafts having a handle v 86 by means of which this mechanism may be manipulated to turn blocks 65 and 66 to reverse the positions of the ratchet teeth with relation to the ribs 61 on stock 60,.

thereby reversing the rotation r of the tool stock without reversing the motor, all as fully described in said original application before referred to.

v The stock 60 of the expander is mounted I in roller bearings 140 in a bearing sleeve 141 The oscillating rings 58 and 59 herein-.

before referred to, which carry the sleeves 62 and 63 in which the pawls operate for engaging the longitudinal ribs 61 and the stock placement on the stock 60 by means of the 60, are held against longitudinal disbearing s1eeves141 and 148 bet-w'eenwhich they are locat d, as clearly indicated in Fig. 3.

and threaded as at 147 to receive the threaded end of a sleeve 148 hereinafter referred to.

At 149 is shown a portion of the tube sheet of a boiler, inserted in which .is a portion of a tube 150. Within the tube 150, see Fig. 3 is shown a series of wedges 151 having their," inner faces tapered to fit upon the tapered end 152 of the main bolt 153 of the expander. The main bolt 153 is threaded at its rear end as at 155 and is drawn into the middle of the wedges 151 to expand them by means hereinafter to be described, such ex pension of the wedges causing their annu larly projecting knuckles 156 to .form

: grooves 157 in the tube' just inside of the tube sheet 149.' The wedges 151 are provided with suitable notches in their outer edges which, when the wedges are brought together as in Figs-3 and 6 form an almost continuous-annular groove to receive the elastic band Mounted loosely-on the tapered'end 152 of the 'bolt-15 3'is a roller carrying frame comprisin a ring 158'upon which aremounted radialy prqecting-arms 159 carrying at their outer ends curved plates 160 having 154, and prevent its displacebeveled side edges 161, said plates being arranged in a circle and being concentric with the ring. The outer faces 0 the ring 158 are flattened at points, and these fiat faces, indicated at .162, in connection with thagrooved sides 163 of the arms 159, and the edges 161 of the plates 160, tend to forma series of,

recesses, each of which 'is' adapted to receive a roller as at 164, 165,166, and 167. The

o ring" 158, its radial :arms 159 and the plates 160, and' the rollers as specified all are inclosed within a cover sleeve 168,. in which are seated screws 169 which project through the inner face of the cover. sleeve beyond the plates 160, thereby preventin the entrance of said platesinto the .proper position. a i

To prevent wear upon the forward-edge of ring 158 and the'ends of the Wedges 151,

a iriction ring 200 is'placed slidably on the tapered end 152 of the bolt 153, with a plain forward end face'to contact with the wedges,

its opposite end being 'formed' with a flan e 202 to engage in an annular rabbetint e forward end face of the ring 158.

' The rollers-164,165, 166, and 167 are'allprovided with peripheral grooves and ribs formed at the edges of said grooves, the rib on the end of each roller which rests against the flat outer surface of the rin 158, as indicated at- 170, being 'of'greater iameter than the'outer rib 171.v i

'The edges 161 ofthe plates project into the groovesof the rollers adjacent to the turned over by the beading V 1 .Shrunk or otherwise rigidly secured upon the outside of thesleeve 148 is a ring 173 cover s eeve beyond-a ,runnin position. vided in the sleeve insert a. screw 189 tolrigidlysecure the stock." 60, sleeve 182, and sleeve'1 85 against'acci 1 outer ribs 171 and the rollers themselves are i kept in'contact with the flat sides of the ring cesses in the outer ends of the rollers and bearing against the inside of the cover sleeve 168. The rollers 164 and 166 arebeadin rollers for turning the edge of the ,tube an the rollers 'and 167, having grooves and 158 by means of'springs 172 seated in re-; The inner end of thestock 60 is recessed" ribs of slightly difl'erent contour, are for the purpose of/"finishing the head after it is rollers.

which carries on its outer edge a sleeve 174 /'and a series of screws 175 ass radially "through this sleeve into the s eeve 148, at

the same time passing throughan opening a i in each of a series of pawls 177 which are thus pivotally mounted on the outer face'of the sleeve 148.- .These awls are provided with flat ends 179, round ed at opposite corners and-bearing'against the ring 173 and a i ring 180 which is rigidly secured within" the cover 'sle'cve 168i Around each of the w :1

screws 175 is 'a spring'181, one end of which so a bears against the ring 173 while the other tend -is-turned into anxopening in the pawl 177, the tendency of this spring being to ends thereofto jam againstthe rings 173 and 180, and thus prevent the turning of the I 173 and the pawls in one directlon, the' ring rounded ends of the-pawls permitting-of their free turning cm the re an J inwardly extending annular flange 184 which bears against theend of the stock 60. 1 The sleeve-182 is'also provided with an ex--w- I terior thread which engages a; sleeve 185 pro-f 186 which engages a flange on a ball parts between the ball An opening 188 ispro} 143 through which to dental displacement.

' The sleeve 185 is with clutch teeth 1 0 which are adapted to engage with similar teeth onlthe endrof a v in the opposite direction,-,; the sleeves 174, ring 173, and the'pawls and their sprin s, thus acting as a'clutch to govfitt-iveIrot-ation of 'the-sleeve-148- and the cover sleeve 168. -l "1 The reduced'outer end of the stock 60 is. 1' threaded exteriorly and receives .onits. 't-hr ead-a sleeve 182, the threads-being 'left handed. The sleeve 182 is provided with-an. outwardly projecting annular 'fiange 18351 which bears against the ring 143 andiwit'h" 5 11v turn the pawl into position to cause the flat. 95'

rovided on its outer'end a;

sleeve 191, the last named sleeve being slid is able longitudinally on" a sleeve nut "192 threaded on themain bolt 153,'-but- .pre-

vented fromro'tating thereon by means of theseeve185.. V I

1 Upon the end of the sleeve 192 is threaded 5 the sleeve nut 192 and carries, shrunk or otherwise rigidly secured thereto, a knurled 1 ring 196' rovided with an inwardly project'- in'g annu ar 'fiange'to' engage withan mg I .nular channel in the clutch ring 191',',Where nut 192 caused by the turning-of the knurled i'ing 196, will cause the longitudinal move mnt of the clutch ring 191 to-engage or disngage its clutch teeth with the teeth 1900f.

a knurled ring197 and a screw 198 serves to fix the knurled rin against removal therefrom. The knurle ring 197 and sleeve nutmainline; a

understood from the following description;

I wedg'es 151, on a portion of the tapered end 152 of the main bolt 153 of a size to permit of theirbeing passed into thetube tobe expanded','are placed in position as shown in Fig. 3. i The. stock BOand its connected arts are then moved inwardon' the main" olt until the rollers contact with the outer edge of'the tube. It is to be understood The knurled ring 196 is turned upon the main not until it rests againstthe same and until the teeth 190 have been} disengaged fromfthe-teeth'of the sleeve 185. By now front surfaceyof the main nut will bear against the roller: bearing sleeve1187 and 5 s read the-wedgslIand tighten them in f .t e'tube, at the same time pressing the stock 5 andall-of the partsupfto-therollers against the edge of the tube: wThe' knurled J50 rin 196. is' now turned nponbthe main nut until theteeth of the olutchsleev'elSfl-have 'b'een'engaged with 'thetteeth 190.13 In the,

I meantime the rollers can bepressedagainst .jth'e 'outer'end of the tube by turning up the ilmurledring- 196 onfthe main 'nut. Thej motor is now set in motionwhereby the pressure behind the rollers is increased and by the travel of the ring 195- on the sleeve 192 will be hereinafter referredltd' as the Y that the air has not yet been-"turned to" rotate the stock.- Bypulling-on the main nut, the bolt 153 will be drawn outwarduntil the wedges engage tightly in the-tube.

2. A device turning. the main nutonthebolt'153, the

draw the main belt 153 outward,which"will i main bolt, and a rubbing sleeve on-the main F 'stock"60. 'is rotated and the roller presserf causes th'e .rollers to travelaround on the Q end of the tube being expanded,the shape they are fed slowly forward to their workifla When the operation has-been complet'ed,; the

knurled ring 196' is turned back until-the teeth-of thegclutch sleeve 19.1 are clear-of the teeth 190, when the machine will be held a between the roller bearings at one end and the ball bearing at the other and its con 'tinuous rotation will smooth off the work,

which will loosenthe main nut by whirling -.it off the end'of the bolt and by tapping the end of the bolt with a soft hammer, the bolt wi-ll'drop back 'in the wedges which will permit themto approach closely enough'to r each other on a smaller part'of'the-ta-pered end-152, to be pulled out of the fiuei 4 I From the foregoing description taken in connection' with the accompanying draw a ings, the'const-ruction and operation of the invention "will be readily'understood with out requiring a more extended; explanation. i;

;- i I Va'rious'changes in the" form, proportion, The operation" ofthe machine Wlllbd and the miror' details of construction may I .b'e'resorted' to without-departing fronl the j'the. pipe or bar 199 is projected into a tube below, the one ;to be expanded, and the principle or sacrificing any of the advantages of the-invention as claimed. v

Havingthus' described my invention, what Iclaim-is;-

g-' 1:; :A device-of the character described comprising a central bolt, a roller carrier, loosely placed. thereon, rollers on the Aroller carrier, a presser sleeve for advanci g the r'ollers,fa' ring about-the pressersleeve, :1 cover for the rollers secured to said ring, a-

fianged ring in rear of the first ring, pawls pivoted in .theflanged ring having straight 10o forward and rear ends with opposite corners rounded, and 8; spring about. the pivot of each pawl tendin to maintainit' in 0- 1 (",1 sition with-its straig t ends in'contactwith i the two rin f 1 2 105, of the character described comprising a'central bolt, "a-roller carrier-j loosely placed thereon, rollers on'the roller carrier, wedges in a cylindrical series, means 11; for yieldingly mounting the ser es on the 1' o" end engaging; in saidrabbet; Q

3. A tube e anden comprising &a centrak bolt, tube beading rollersfvapresser' sleeve on the bolt engaging saidrollers, aj'ringqro' 12 tatable and anotherfast-"on the pres'ser sleeve, and .pawls betweenithefianged ring and the rotatable i v 4.'; A device of the characterdescribed comprising a casing having bearing sleeves, $1 25- a tool stock-journaled in said sleeves, tube-9.; turning rollers at one end of the stock, roller bearings at the opposite 'ends,'.a main bolt throu h the stock, a clutch sleeve on the 1 stock eyond the rollerbearing, a main nut 1'30.

on the bolt adapted to be turned against the ball ring of said bearing, and a second clutch sleeve threaded upon the exterior of the main nut to be engaged or disengaged with the first named clutch sleeve.

5. A tube expander comprising a casing,

'a tubular stock, a main bolt slidable therein,

a roller carrier on the forward end of the stock, sleeves on the casing surrounding the tubular stock, roller bearings at one end and ball bearings at the opposite end carried by the sleeves and supporting the stock, and means on the main bolt for'securing the positions of the sleeves and stock.

6. A tube expander comprising a casing, bearing sleeves mounted thereon, ball and roller bearings in the sleeves, a tubular stock carried in said bearings, a main bolt, tube expanding rollers carried thereon, a roller presser sleeve carried by the stock, a double flanged sleeve threaded on the stock bearing against a bearingsleeve at one end and the tubular stock at the other end, a clutch sleeve carried by the double flanged sleeve, a main nut on the main bolt, and a clutch sleeve slidable on the main nut.

7. A tube expander comprising a casing, bearing sleeves thereon, a tubular stock mounted in ball and roller bearings in said sleeves and carrying a roller presser sleeve at its forward end, a main bolt in the lar flange bearing against the end of the stock, a clutch'sleeve threaded on the flanged sleeve and rovided with an inward flange, a ball bearlng between said flange and the flanged sleeve, amain nut onthe main bolt bearing against said ball bearing, a clutch sleeve slidable on the main nut, and means for moving said clutch sleeve on themaln bolt. In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. a J OE'CEPHAS TASSEY. Witnesses: I Y a 1 E. S. PINCKARD, J. B. BRADLEY.'

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