US2486830A

US2486830A - Method and apparatus for attaching hose fittings by beading the fittings inwardly

Info

Publication number: US2486830A
Application number: US493174A
Authority: US
Inventors: John F P Farrar; Ekholm Carl Roger
Original assignee: CHICAGO METAL HOSE CORP
Current assignee: CHICAGO METAL HOSE Corp
Priority date: 1943-07-02
Filing date: 1943-07-02
Publication date: 1949-11-01
Anticipated expiration: 1966-11-01

Description

Nov- 1, 1949 J. F. P. FARRAR ET AL 2,486,830

METHOD AND APPARATUS FOR ATTACHING HOSE FITTINGS BY BEADING THE FITTINGS INWARDLY Filed July 2, 1945 5 Sheets-Sheet 1 663 54 J& 3

75/67 Z J73 J75 Z00 J01 ,lla/ 1w Nov. 1, 1949 J. F. P. FARRAR ET AL METHOD AND APPARATUS FOR ATTACHING HOSE FITTINGS BY BEADING THE FITTINGS INWARDLY 5 Sheets-Sheet 2 Filed July 2, 1945 @rffgg 2,486,830 INGS Nov. 1, 1949 J. F. P. FARRAR ET AL METHOD AND APPARATUS FOR ATTACHING HOSE FITT BY BEADING THE FITTINGS INWARDLY 5 Sheets-Sheet 3 Filed July 2, 1943 (Ia/mi? Carfl Pfrrar' e7 /zalm/ Nov. 1, 1949 J. F. P. FARRAR ET AL 2,486,830

METHOD AND APPARATUS FOR ATTACHING HOSE FITTINGS BY BEADING THE FITTINGS INWARDLY Filed July 2, 1943 5 Sheets-Sheet 4 Nov. 1, 1949 J. F. P. FARRAR ET AL METHOD AND APPARATUS FOR ATTACHING HOSE FITTINGS BY BEADING THE FITTINGS INWARDLY 5 SheetsSheet 5 Filed July 2, 1945 INVENTORS a 7d! rflahz mh W WMW E Patented Nov. 1, 1949 METHOD AND APPARATUS FOR ATTACHING HOSE FITTINGS BY BEADING THE FIT- TINGS INWARDLY John F. P. Farrar, Maywood, and Carl Roger Ekholm, Chicago, Ill., assignors to Chicagt Metal Hose Corporation, Maywood, 111., a corporation of Illinois Application July 2, 1943, Serial No. 493,174 17 Claims. (Cl. 153-1) This invention relates to apparatus and methods for forming or shaping cylindrical articles such as bands, ferrules, tubings, and the like, of metal or other formable material, in connection with the making or assembly thereof.

It is an object of the invention to provide improved means and methods for forming and shaping articles of the type defined.

More specifically stated, it is an object of the invention to provide. in the forming and shaping of articles of the type stated, improved means for gripping and supporting the articles during the forming operation, improved and rapidly operable means for shaping the articles, and improved control devices for controlling the action of the gripping and shaping means.

A further object of the invention is to provide improved means and methods for attaching ferrules or fittings tohose and tubings.

A still further object is to provide an improved end connection for hose and metal tubing.

Various other obj ects, advantages and features of the invention will be apparent from the following specification when taken in connection with the accompanying drawings wherein a preferred embodiment of the invention is set forth for purposes of illustration.

In the drawings, wherein like reference numerals refer to like parts throughout:

Fig. 1 is a top assembly View, partly in plan section, of a ferrule attaching machine constructed in accordance with and embodying the principles of the invention, said view being taken substantially as indicated by the line [-1 of Fig. 2;

Fig. 2 is a rear view of the machine illustrated in Fig. 1, taken as indicated by the line 2-2 thereof;

Fig. 3 is a front view of the forming head, partly in section, and taken as indicated by the line 3-3 of Fig. 4;

Fig. 4 is a vertical longitudinal section through the forming head, on the line 4-4 of Fig. 3;

Fig. 5 is a detail section, more particularly illustrating one of the guide tracks for the forming tool holder;

Fig. 6 is a detail section, on the line 6-6 of Figs. 2 and 4, of the shifting yoke for operatin the forming tool;

Fig. 7 is an exploded detail view of certain of the parts illustrated in Fig. 6;

Figs. 8 and 9 are exploded views, respectively, illustrating various parts of the forming head;

Fig. 10 is a detail perspective view of the mandrel forming a part of the support and gripping means for the work piece;

Fig. 11 is a longitudinal sectional view showing the work piece support means or chuck in one position of adjustment;

Fig. 12 is a sectional of Fig. 11;

Fig. 13 is a view similar to Fig. 11 but showing the support chuck in a different position of adjustment;

Figs. 14 and 15 are sectional views taken on the lines I l-I4 and l5-l5, respectively, of Fig. 13;

Fig. 16 is a detail perspective view of one of the gripping jaws of the work piece support chuck;

Figs. 17, 18 and 19 are views illustrating successive steps in the operation of securing the ferrule onto the end of the hose or tubing;

Fig. 20 is a horizontal sectional view through the central rear portion of the machine taken as indicated on the line 20-20 of Fig. 21, and illustrating the action of certain of the control devices;

Fig. 21 is a vertical longitudinal sectional View through the mechanism of Fig. 20, and taken as indicated on the line 2 l-ZI of Fig. 20 and Fig. 1;

Fig. 22 is a transverse vertical sectional view through the control mechanism taken on the line 22-22 of Fig. 1;

Figs. 23, 24 and 25 are transverse sectional views of the parts illustrated in Fig. 21 and taken as indicated, respectively, on the lines 23-23, 24-24 and 25-25 thereof.

Referring more particularly to the drawings, the machine illustrated comprises a base or main frame Ill, Figs. 1 and 2, carrying a series of support pedestals ll, I2, [3 and I4. At the forward end of the base there is supported a rotatable forming head, generally indicated by the numeral l5 in Figs. 1, 2, 3 and 4 which carries and within which the forming tool is operative for forming and shaping the work piece. The forming head comprises a casting or head frame member having a central cylindrical or sleeve portion l6, Fig. 4, and a radially outwardly extending portion ll, Figs. 3 and 8, of generally circular and plate-like form. As best shown in Fig. 8, the radially extending portion I! of the head frame terminates in an outer cylindrical flange l8, and is also provided with a pair of diametrically extending track portions within which the operating parts for the forming tool are radially reciprocable. These track portions are U-shaped in cross section. As best shown in Fig. 8, the track view on the line l2-l2 portion which is uppermost in the particular position of the rotatable head illustrated in the drawings comprises a pair of side walls l8 and 20, and a rear wall 2i. Similarly the diametrically opposite track portion comprises

side walls

22 and 23, and a rear wall 24, as best shown in Fig. 5. See also Figs. 3 and 4.

A tool carrier 21, Figs. 3, 4 and 9. is provided with a pair of diametrically

opposite extensions

28 and 29 radially shiftable within the two diametrically opposite U-shaped track structures. The tool carrier is adapted to support in pressfitted relation the outer race of a ball bearing 30, .the inner race of which in turn supports the forming tool 31. The forming tool is in the form of an annular ring, and is provided onitS inner periphery with annular cam formations 32 in accordance with the particular shaping to be imparted to the work pieces. The forming tool is held in place by anannular lip 33, Fig. 9, formed thereon and by a clamp plate 34 held in place by a series of screws 35 adapted to be received within threaded openings 36 in the forming tool. The lip or flange 33 and the clamp plate 34 embrace opposite faces of the inner race of the ball bearing, whereby to hold the forming tool in posit on within the tool carrier 21. It will be seen that whereas the tool carrier 21 rotates with and at the speed of the head frame, the forming tool itself is independently rotatable at a speed determined by its contact with the work piece, due to the provision of the bearing 38.

Means is provided for diametrically shifting the tool carrier 2! whereby to shift the forming tool radially in its operation upon the work piece. Th s means comprises a bell-crank 38. Fig. 4, pivotallv mounted on a shaft 38 carried by a pair of

ears

40 and 41, Fig. 8. forming a part of the head frame plate. A U-shaped slide 42. Figs. 3, 4 and 8. is ada ted for reciprocation within the head frame track I8. 20, 2|. this slide being provided with an opening or socket 43 in its rear wall ada ted to receive one of the arms 44 of the bellcrank. which arm pro ects through an opening 45 in the rear track wall 2|. The slide 42 is also prov ded with a threaded o ening 46 adapted to receive a c am screw 41, which clamp screw also extends through an elongated slot 48 in the extension 28 of the tool carrier 21. By means of the clamp screw 41 the tool carrier 21 and the slide 42 may be clamped firmly together for movement as a unit. the slot 48 however permitting adjustment of the tool carrier relative to the slide upon loosen ng of the screw. This adjustment is facilitated by means of a threaded stud 50, Fig. 4. engageable with the end of the tool carrier extension 28, which stud extends through a threaded opening in a cross bar carried by the slide 42 in a pair of

notches

52 and 53 formed in the side walls thereof. Upon loosening of the clamp screw 41, the adjustment stud 58 may be turned to adiustablyposition the tool carrier 21 and slide 42 relative to each other.

A cover plate 55 overlies the slide 42, and retains it for reciprocation within the track [8, 20, 2|, this cover plate being bolted to the front edges of the track side walls by suitable means such as screws 56. The cover plate is provided with .a slot 51, Fig. 8, within which the head of the clamp screw 41 reciprocates during the reciprocation of the slide. A second cover plate 58 overlies the outer end of the slide 42, this cover plate being held in position by means of screws 58, and also being provided with an opening 68 through which tools may be inserted to effect the v adjustment of the threaded stud 50.

Similar means is provided for guiding the opposite extension 28 oi the tool carrier, such means comprising a slide 62, Figs. 3, 4 and 5, reciprocable within the

head frame track

22, 23, 24, which slide is adapted to be clamped to the tool carrier extension 29 by means of a clamp screw 63. A cover plate 64 held in place by screws 65 overlies the front of the slide, and a second cover plate 66 overlies the end of the slide, in a manner similar to the plate 58 previously described. This cover plate 88 is in this instance, however, provided with an opening adapted to receive a pressfitted pin 61 projecting radially inwardly, and adapted to form the guiding means for a compression spring 68 which bears against the end of the tool carrier extension 28 whereby to hold the opposite tool carrier extension 28 in engagement with the adjustment stud 50. The cover plate 64 is provided with a slot 68, Fig. 3, within which the head of the clamp screw 63 is reciprocable as in the case of the screw 41 and cover plate 55.

It will be seen that by reason of the described connections, upon operation of the bell-crank 38 corresponding reciprocable movements may be imparted to the tool carrier 21, which in turn imparts corresponding reciprocations to the forming tool 3i. Adjustment of the tool carrier and tool to predetermine the range of reciprocation may be effected by manipulation of the stud 50 upon release of the screws 41 and 63.

To effect the rotation of the head frame, the sleeve l6 thereof is press-fitted onto and splineconnected with, as indicated at 12, Fig. 4, a rotatable drive sleeve I3. This drive sleeve rotates within

bearings

14 and 15, Figs. 1 and 4, carried by the frame pedestals H and I2, and has keyed thereto a pulley 16 adapted to be driven by suitable means such as V-belts 11 powered from a source of power supply. It will be seen that as the pulley is rotated corresponding rotation is imparted to the head frame and the tool carrier 21. The pulley wheel 16 is held on the sleeve I3 by means of a nut 18, Fig. 1, a thrust bearing 18 being provided between the pulley and the base pedestal II.

To effect actuation of the bell-crank 38, the inner end of the radially extending arm 82 thereof is adapted to be received within an opening or socket 83 formed in a sleeve 84 loosely fitted onto the sleeve l6 so as to be rotatable therewith but longitudinally slidable thereon. This sleeve 84 has a collar 85, Fig. 4, secured to its end by means of a set screw 86, a pair of ball bearings 81 and 88 being held in place upon the sleeve by this collar. The two bearings collectively grip therebetween a collar 88 provided with two diametrically extending pins and 8|, Figs. 1, 4 and 6. It will be seen that the arrangement is such that any longitudinal movements imparted to the collar 88 impart corresponding longitudinal increments of movement to the sleeve 84. Collar 88, however, is non-rotatable, whereas sleeve 84 rotates with sleeve I 6, being so caused to rotate by means of its connection with the bell-crank 38.

The pins 80 and 8| are journaled in slots formed in the upper and lower arms 82 and 93, respectively, of a yoke member 84 pivotally mounted upon a bolt 85 journaled in a frame bracket 86 forming a part of the machine base I 0. The end of the upper yoke arm 82 is provided with a slot 81, Fig. '7, adapted to receive a pivot bolt 98, which bolt also extends through an opening 99 in an elongated control rod I00, Figs. 1 and 2, extending axially of the machine and journaled in bearing blocks Ila and H11 forming a part of the pedestals II and I2. The bolt 98 forms a pivot connection between the end of the rod I and the yoke arm 92. An adjustment screw IOI, Fig. 1, is adapted to engage the bearing block IIa to limit the movement of the control rod I00 to the right as seen in Fig. 1, this screw being received within'a threaded opening I02. Fig. 7, in an angular bent end portion of the control rod. This control rod portion is slotted as indicated at I03, and provided with a threaded opening I04 to receive a lock screw I05. The arrangement is such that the lock screw may be operated to compress the slot I03, whereby to hold the adjustable stop screw IOI in adjusted position.

The opposite end of the control rod I00 carries a split clamp bracket I01 held in position on the rod by means of a bolt I08. This bracket carries an adjustment screwv I09, the head of which is adapted to engage the bearing block I2a whereby to limit the movement of the control rod I00 in its opposite direction, or to the left as seen in Fig. 1.

The end of the control rod adjacent the clamp I01 is pivotally connected by means of a pivot bolt I10, Figs. 1 and 2, to a fitting I II provided with an integral extension in theform of an elongated bolt H2 threaded on its end and adapted to receive a nut I13. The end of the bolt II2 extends through a fitting I14 which fitting has a projection II5 extending through and pivotally connected to the end of the main control lever II6 pivotally mounted upon the frame of the machine. More specifically, referring to Fig. 21, the

main control lever is pivotally mounted upon a portion I3a of the pedestal I3 by means of'a pivot pin M1. A compression spring II8 embraces the elongated bolt I12 and bears at its ends against the fittings III and I I4.

In Fig. 1 the control lever H6 is shown in its normal or neutral position, the stop screw I09 of the control shaft I00 being in abutting engagement with the bearing block I20. and the compression spring I I8 substantially relaxed. It will be seen that as the control lever is shifted counterclockwise or to the position as indicated at Mta in dotted lines in Fig. 1, no motion is imparted to the control rod I00 because of the engagement already existing between the screw I09 and the bearing block I2a. During this movement of the control lever the spring I I8 is merely compressed, the fitting II4 sliding on the elongated bolt II2. However, when the main control lever is shifted clockwise to its dotted position as indicated at Il6b, the control rod I00 will be shifted to the right as seen in Fig. 1 through an extent of travel permitted by the stop bolt IIlI, thereby shifting the sleeve 84, Fig. 4, to the right and operating the bell-crank 38 to shift the forming tool from an inoperative or concentric position as shown in Figs. 4 and 11, to an operated or forming position as shown in Fig. 13.

The work support or chuck for gripping the work piece, to be operated upon by the forming tool, is best shown in Figs. 4, 10 and 11 to 16 inclusive. The support chuck comprises a central mandrel I20 illustrated in perspective detail in Fig. 10. This mandrel is provided at "one end with an extension I2I adapted to be arranged within the work piece I22, illustrated as a ferrule to be secured onto the end of a piece of flexible metal hose I23, Fig. 17, in the particular embodiment disclosed. As best shown in Figs. 17, 18 and 19 the ferrule comprises an inner generally cylindrical portion I24 adapted to extend into the bore of the hose, an external generally cylindrical portion I25 adapted to embrace the outer periphery of the hose end, and a flange portion I20.

The ferrule is initially shaped as indicated in Fig. 17. In accordance with the principles of the invention, the ferrule is first arranged with respect to the hose end as shown in Fig. 17, and a tool I21 having a series of flutes or grooves I28 is then inserted into the inner portion I24 of the ferrule as shown in Fig. 18, while the tool is rotating, whereby to expand the inner flange into gripping engagement with the tubing wall and to form it into true cylindrical form. Any suitable apparatus may be employed, comprisingmeans for holding the ferrule and tubing, and means for rotating the tool I21 and causing it to be inserted into the end of the ferrule while in rotatable operation. 'The flutes or grooves I28 facilitate the expansion of the ferrule portion I24 into gripping engagement with the tubing wall, without mutilation of the flange I26, or causing it to deviate from its original position. The grooves effect the taking of a slight cut on the portion I24 of the ferrule as the rotating tool is inserted, and as the portion I24 is expanded.

With the ferrule and tubing in the condition illustrated in Fig. 18, they are applied over the end of the mandrel projection I2I, as shown in Fig. 11, the ferrule flange being brought into abutting engagement with a collar portion I30 formed on the mandrel.

A plurality of jaw members I3I, three in,the particular embodiment shown, also form af'part of the work holding means and collectively embrace the mandrel. These jaw members, one of which is shown in perspective detail in Fig. 16, include a forward or clamping portion I32 adapted to grip the ferrule flange I26 and clamp it into engagement with the mandrel collar I30, and a rear portion I33 carrying a radially projecting pin I34. The forward edge of the clamping portion I32 of each jaw member is beveled as indicated at I35 for cooperation with a beveled or cam surface I36, Fig. 11, on the forward end of a sleeve I31 within which the jaw members are disposed. This sleeve I31 is threadedly connected as indicated at I38 to a stationary frame sleeve I39 extending longitudinally of the machine, the details of which will be later described. A bushing I40, Fig. 11, is press-fitted into the end of the rotatable drive sleeve 13, the drive sleeve with its bushing being rotatable upon the non-rotatable and fixed sleeve I31.

The end of the mandrel I20 opposite to the work support portion I2I is screw threaded as indicated at I42 whereby to have screw threaded connection with an axially shiftable chuck operating sleeve I43. The threaded end portion of the mandrel also has a kerf and slot connection with a rod I44 disposed internally of the sleeve. The structure and functions of the parts I43 and I44 will be later more particularly described, suffice to say at this point that the sleeve I43 is non-rotatable but is provided with means for causing it to shift axially, and that the rod I44 normally moves as a unit with the sleeve I43.

A still further sleeve member I46, shaped as shown in Fig. 11, is loose or fioating'ly mounted upon the mandrel and within the fixed sleeve I31. This floating sleeve is provided with a series of openings I41 adapted. to receive the pins I 4 of the jaw members. A compression spring I48 is arranged within the floating sleeve and bears at one end against the ends of the jaw members and at the other end against the floating sleeve portion or flange I49. The mandrel is provided forward shifting of the operating sleeve I43, the

mandrel is first axially shifted forwardly relative to the gripping jaws whereby to cause the rib I50 to engage the rear portions of the jaws, moving the jaws into substantially horizontal position and causing the gripping flanges Il thereof to be moved sufliciently radially inwardly so that they may be engaged by the ferrule flange I28. Continued forward movement of the operating sleeve I43 causes the ferrule .flange to engage the gripping flanges I5I forcing the beveled surfaces I35 of the jaws into engagement with the beveled cam surface I36 of the fixed sleeve I31, as shown in Fig. 13, whereby as the operating sleeve I43 is projected forwardly, the ferrule will be tightly gripped by the chuck jaws and also held in supported relation upon the mandrel support projection I2I. As the bell-crank 38, Fig. 4, is then operated, as heretofore described, the forming tool 3| is eccentrically shifted, during rotation of the head frame, and the outer cylindrical portion I25 of the ferrule is formed or shaped as indicated in Figs. 13 and 19. As the chuck operating sleeve I43 is retracted, after the forming operation, the gripping jaws of the chuck again assume the position illustrated in Fig. 11, the compression spring I48 and the openings I41 of the floating sleeve causing the jaws to pivot into and be maintained in open position as shown.

The means for shifting the chuck operating sleeve I43 is best illustrated in Figs. 1, 2, 20, 21 and 22. As shown, the stationary frame sleeve I39 projects rearwardly substantially along the entire length of the machine. The operating sleeve I43 is axially shiftable in this frame sleeve. More particularly, Fig. 21, the operating sleeve is provided adjacent its rear end with an opening adapted to receive a pin I 55, the central body portion of which is oblong in cross section. This pin is provided with upper and lower threaded extensions adapted to receive nuts I56 and I51 whereby to form a pivotal connection between the pin and a pair of links I58 and I59. These links are pivotally connected at their opposite ends to a pair of pins I60 and lil, respectively, which pins are press-fitted into upper and lower plates I62 and I63 pivotally mounted upon a pin I64 by means of nuts I65 and I66.

The shape of the plates I 62 and I63 is best shown in Figs. 1 and 20. They are interconnected by a pair of tie-bolts I68 and I69, whereby to hold the plates in parallel relationship, the latter tie-bolt I69 also acting as a stop to limit the clockwise shifting of the plates on the pivot I64. A spacing sleeve I and bolt "I, Fig. 22, also extend between the plates adjacent one end thereof, the bolt I1I having an enlarged lug or head I12 at the upper end thereof. This lug loosely receives an elongated bolt I13, Figs.

1 and 22, which, as shown in Figs. 1 and 2, is provided at one end with lock nuts I14, at its intermediate portion with a collar I15 and is threaded at its opposite end I16 into a yoke-like fitting I18 pivotally connected as indicated at I19 to the main control lever II6. A compression spring I80 embraces elongated bolt I13, bear; ing at one end against the lug I12 and at its opposite end against the lock nuts I14.

In operation, as the control lever H6 is swung counterclockwise or to the position II6a, as seen in Fig. 1, the collar I15 of the elongated bolt I13 causes a counterclockwise pivoting of the plates I62 and I63 whereby to draw the links I58 and I59 to the right as seen in Figs. 1, 20 and 21.. This movement of the links causes the pin I55 to correspondingly move to the right thus drawing the chuck operating sleeve I43 to the right, into the position shown in Fig. 11, whereby to open the work-supporting chuck and jaws, permitting insertion of the work piece. A restoring of the control lever II6 to its neutral or full line position of Fig. 1 causes the operating sleeve I43 to be restored or shifted to the left into the position shown in Fig. 13 whereby to cause the chuck jaws to grip the work piece, as shown. Further clockwise movement of the control lever II6 into the dotted line position II6b shown in Fig. 1 merely results in a compression of the spring I80, further clockwise shifting of the plates I62 and I63 being prevented by the stop pin I69. To permit the shifting of the oblong pin I55, the stationary frame sleeve I39 is provided with elongated slots I8I and I82, Figs. 21. This portion of the frame sleeve is also provided with flat upper and lower surfaces I83 and I84, Fig. 22, whereby to accommodate the movement of the links I58 and I59.

Means is-provided for adjusting the position of the pivot pin I64, whereby to adjustably determine the limits of movement of the chuck operating sleeve I43. More particularly, the central body portion ofthe pin I64 is oval in cross section. It is slidably adjustable in slots I86 and I81 provided in the fixed frame sleeve I39, and is carried within an opening provided in the end of an adjustment shaft I88, Fig. 21, adjustably slidable within the frame sleeve. The opposite end of this adjustment shaft I88 carries a pin I89, Figs. 21 and 24, also adjustably slidable in the frame sleeve, by means of slots I90 and I9I. The ends of this pin project into an internal annular channel I92, Fig. 20, provided in a rotatable collar I93 threadedly adjustable on the threaded end portion I94 of the fixed frame sleeve. A lock nut I95 is provided for holding the collar I93 in adjusted position. It will be seen that by rotation of the collar I93 in one direction or the other upon the threaded end portion I94 of the frame sleeve, the adjustment shaft I88 and the pin I64 will be longitudinally shifted to adjust the limits of travel of the chuck operating sleeve I43. As stated, the lock nut I95 holds the adjustment collar I93 in adjusted position.

Means is also provided for adjusting the position of the frame sleeve I 39 whereby to bodily position the work support and chuck, relative to the forming tool 3|. This adjustment means comprises a rotatable nut or collar I91 internally threaded for threaded engagement with the end I94 of the frame sleeve. The collar or nut I91 is provided with an annular channel I 98, Fig. 20. As best shown in Fig. 25, this channel is adapted to slidably receive an arcuate clamp plate I99 mounted on the end of a threaded screw 200 supported by the main frame pedestal I4, and provided with a lock nut 20I. when the screw 200 is slightly retracted the clamp plate I99 is loosely slidable in the channel I98 whereby the adjustment collar I91 may be rotated. Due to the con-.

bolt 200 may then be advanced to bring the clamp plate I99 into tight engagement with the collar I91, to hold it in adjusted position, and the lock nut I applied. 7

After adjustment, the frame sleeve is firmly held in adjusted position by means of a lock screw 202, Figs. 20 and 21, the end of which projects into a key-way 203, and an associated lock nut 204.

To permit replacement and substitution of the chuck mandrel, it will be seen that the end thereof is provided with a wrench socket as indicated at 205 in Fig. 10. The shaft I44, previously mentioned, disposed within the operating sleeve I43 is provided witha series of circumferentially arranged grooves 205, Figs. 21 and 23. A cylindrical pin 201 is adapted to interfit with any one of these grooves, and is normally held in position in one thereof by the end of an adjustment screw 209 provided with a lock nut 209. This adjustment screw 208 is threadedly adjustable in an oblong block 2I0 connected to the operating sleeve I43 by a series of screws 2I I, and slidable in an elongated slot 2I2 provided in the stationary frame sleeve I39. It will be seen that the block 2I0 slides within the slot 2I2 during axial shifting of the operating sleeve M3, but at the same time prevents inadvertent rotation of the operating sleeve relative to the frame sleeve. The shaft or rod I44 is normally bodily axially shiftable with the operating sleeve M3 being clamped in position within the operating sleeve by means of the screw 208. However, upon retraction of the screw the rod I44 is released for rotational adjustment, thus permitting the mandrel I20 to be rotated by insertion of a wrench into the socket 205, the mandrel thereby being threadedly removable from the end of the operating sleeve I49. When the screw 208 is in operative position, as shown in Figs. 21 and 23, rod I44 is prevented from rotation thereby precluding rotation and removal of the chuck mandrel I20. A compression spring 2I5, Fig. 21, bearing at one end against the end of the rod I44 and at its other end against pin I55, normally holds the end of rod I44 in engagement with the end of the mandrel.

It is believed that the operation is clear from the description heretofore given. Upon application of a suitable source .of power to the belts 11, the head frame I5 and the tool support 21 are continuously rotated. As the main control handle II6 is shifted from its neutral position to the position indicated at Ilia in Fig. 1, the work supporting chuck is opened permitting insertion of the Work piece I22. During this shifting of the main control handle no motion is imparted to the control rod I00, the spring II8 being merely compressed. As the control handle H6 is restored to its neutral full line position in Fig. 1, the work piece is firmly gripped and held in proper position by the support chuck. As the control handle H5 is then shifted clockwise to its position IIGb in Fig. 1, motion is imparted to the control rod I00 whereby to shift the forming tool 9| to its eccentric Fig. 13 position to effect the forming operation upon the work piece. During this movement of the control lever or handle, the spring I80 is compressed, the work supporting chuck remaining in work piece gripping position. The forming tool rotates only so fast as required by its engagement with the work piece, in rolling contact. The axis of the rotating tool however during the forming operation, revolves within the rotatable head frame and in an increasing spiral onbit as the control rod I00 is shifted, causing contact between the work piece and the forming tool in a correspondingly decreasing spiral. It is obvious that various types of band-like or cylindrical articles may be formed or shaped, in accordance with the particular forming tool being used.

During the forming operation the work piece is properly held, against rotation, and in condition for contact with the forming tool, by the work supporting means. Thiswork supporting means comprises the mandrel projection I2I disposed internally of the work and the gripping jaws I3I which with the mandrel collar I30 grip opposite faces of the work piece flange I26. The work support is actuated by the same control handle utilized for effecting the shifting of the forming tool.

It is obvious that various changes may be made in the specific embodiment and method steps described without departing from the spirit of the invention. The invention isaccordingly not to be limited to the particular embodiments disclosed but only as indicated in the claims.

The invention is hereby claimed as follows:

1. An apparatus for attaching ferrules to hose and the like comprising means for supporting the hose end and ferrule in predetermined relation, said support means including a non-rotatable mandrel adapted to project internally of the ferrule and hose end, an annular forming tool having .an annular work surface arranged to embrace the ferrule, a rotating head on which the forming tool is mounted, power means for rotating the head, and means shiftable axially of said head and including a bell crank pivoted on said head for radially shifting the forming tool relative to the head during head rotation whereby to shift the forming tool and ferrule relative to each other to cause said worksurface ttnprogressively deform an annular portion of the ferrule onto the hose in a spiral of decreasing size.

2. The method of attaching a ferrule to the end of a hose or the like which comprises expanding an inner substantially cylindrical portion of the ferrule radially outwardly into engagement with the hose wall while simultaneously effecting a light scrape cutting action on said cylindrical portion, and thereafter contracting an outer substantially cylindrical portion of the ferrule onto the hose Wall.

3. An apparatus for forming band-like articles comprising non-rotatable support means engageable with the article adj acent the forming station, said means including a mandrel adapted to project internally of the article in supporting relation therewith, a forming tool, means for shifting the forming tool circumferentially and radially of the article to impart an annular configuration thereto, a support for the mandrel, and means extending axially in respect to the mandrel for locking the mandrel upon its support.

4. An apparatus for forming band-like articles comprising non-rotatable support means engageable with the article adjacent the forming station, an annular forming tool having an annular work surface arranged to embrace the article, a rotatable head in which the forming tool is mounted, support' means for the forming tool shiftable radially of the head, means for adjusting the forming tool relative to its support means, and control means for shifting said tool support means radially of the head during head rotation whereby to shift the forming tool and article relative to each other to cause said work surface to progressively deform the article circumferentially in a spiral of varying size, said control means including a lever interconnecting said support means and a sleeve member shiftable axially relative to said head.

5. An apparatus for forming band-like articles comprising means for supporting the article internally adjacent the forming station, an annular forming tool having an annular work surface arranged to embrace the article, and means including a rotatable power driven member and a control member slidable axially thereof for shifting the forming tool and article relative to each other circumferentially and simultaneously radially to cause said work surface to progressively deform the article circumferentially to impart an annular configuration thereto.

6. An apparatus for forming band-like articles comprising support means engageable with the article adjacent the forming station, said means control member selectively operable from a neutral position to a plurality of operating positions forcontrolling the supporting means and for shifting the forming tool radially of the head whereby to shift the forming tool and article relative to each other to cause said work surface to progressively deform the article circumfer entially in a spiral of varying size.

10. An apparatus for forming band-like articles comprising means including a shiftable clamp member for supporting the article, a forming tool, a single control member selectively operable from a neutral position to a plurality of operating positions for controlling the shiftable clamp member and the relative positioning of the forming tool and article, control mechanism between the control member and said clamp member operable by movement of the control member to one operating position for shifting the clamp member into article clamping position, and control mechanism between said forming tool and said control member operable by movement of the control member to another operatingposition for shifting the forming tool and the clamped article relative to each other to progressively deform the article circumferentially whereby to impart an annular configuration thereto.

11. An apparatus as claimed in claim 10, wherein both the control mechanism for the clamp member and the forming tool include means selectively operable in response to the direction of movement of said control member for alternately comprising a pair of cooperable clamping members adapted to be shifted relatively toward each other to clamp the article therebetween, an annular forming tool having an annular work surface arranged to embrace the article, means for shifting the forming tool and article relative to each other circumferentially to cause said work surface to progressively deform the article circumferentially to impart an annular configuration thereto, and means extending axially in respect to the article for controlling the cooperable clamping members.

7. An apparatus for forming band-like articles comprising means for fixedly supporting the article internally adjacent the forming station, an annular forming tool having an annular work surface arranged to embrace the article, a rotatable head for carrying the forming tool, power means including a drive shaft for rotating the head, and means slidable axially of said shaft for shifting the forming tool radially of the head during head rotation, whereby to shift the forming tool relative to the article to cause said work surface to progressively form the article circumferentially in a spiral of varying size.

8. An apparatus for forming band-like articles comprising means including a shiftable clamp member for supporting the article, a forming tool, and a single control member selectively operable from a neutral position to a plurality of operating positions to control the shiftable clamp member and the shifting of the forming tool and article relative to each other circumferentially to progressively deform the article circumferentially to impart an annular configuration thereto.

9. An apparatus for forming band-like articles comprising shiftable means for supporting the article, an annular forming tool having an annular work surface arranged to embrace the article, a rotating head upon which the forming tool is mounted, and means comprising a single preventing the operation of the forming tool or the clamp member during operation of the other.

12. An apparatus as claimed in claim 11, wherein the means preventing operation of the forming tool or the clamp member includes spring means in each control mechanism operating to return the single control member to its neutral position.

13. An apparatus as claimed in claim 10, wherein the control mechanism for the forming tool includes a pivoted lever connected to a sleeve rotatable with the forming tool and operating under the influence of said control member to shift said sleeve axially of the forming tool for effecting the required relative positioning thereof with respect to the=article.

14. An apparatus as claimed in claim 10, wherein the control mechanism for the clamp member includes an articulated link and lever system having one end of the system pivoted to a fixed part of the apparatus and having the opposite end thereof pivoted to a control sleeve connected to the clamp member.

15. An apparatus as claimed in claim 14, wherein the articulated link and lever system includes pairs of opposed plates pivoted to an interposed frame element.

16. An apparatus for forming band-like articles comprising shiftable means for supporting the article, an annular forming tool having an annular work surface arranged to embrace the article, a rotatable head upon which the forming tool is mounted, said head including an axially extending hub portion, a single control member selectively operable from a neutral position to a plurality of operating positions for controlling the supporting means and the shifting of the forming tool radially of the head, a sleeve mounted on said hub portion for rotation therewith and for axial movement relative thereto, lever means pivoted to a fixed part of the apparatus and engaging said sleeve but without rotation therewith, a link connected to the free end of said lever and to said control member and effective to asaaaso supporting position.

' JOHN F. P. FARRAR.

CARL ROGER EKHOLM.

REFERENCES CITED The following references are of record in the tile of this patent:

UNITED STATES PATENTS Number Name Date 748,276 Gabriel Dec. 29, 1903 798,448 Pogany et al Aug. 29, 1905 1,370,039 Newman Mar. 1, 1921 Number Number 14 Name Date Muller Dec. 2, 1930 Heidlofl Nov. 8, 1932 Benbow June 13, 1933 Heidloii! Feb. 6, 1934 Cowles Mar. 20, 1934 scholtes Dec. 4, 1934 Weatherhead May 17, 1935 Bebie Nov. 12,1935 Brinkman Jan. 7, 1936 Stecher Mar. 16, 1937 Goldberg Aug. 13, 1940 Hunziker Aug. 13, 1940 Werner Jan. 7, 1941 Stecher Jan. 28,1941 Wallace Oct. 14, 1941 Wallace Sept. 1, 1942 Conroy May 7, 1946 FOREIGN PATENTS Country Date Great Britain July 2, 1897 Great Britain July 31, 1913