Патент USA US2403675код для вставки
July 9, 1946. w. G. MITCHELL 2,403,675' TOOL FOR INSTALLING TUBULAR RIVETS. Filéd June 11, 1945 3 Sheets-Sheet 1 July 9, 1946. w. G. MITCHELL _ TOOL yFOR INSÍALLING TUBULAR RIVETS Filed Jup? 11, 1943 3 Sheets-Sheet 2 507697 uw v 2,403,675 13 " " ' ~ @d - -JNVENTOR. _ fvwm», July 9, 1946- w. G.' MITCHELL ’ ¿4032675 TOOL FOR INSTALLING l'ÍL‘UBULÀR RIVETS ' _Filed June,11, 1943 s sheets-sheet :s ' ATroR/vfx .Patented July 9, ’ 2,403,675 'UNITED STATI-:s PATENT OFFICE ' TOOL FOR INSTALLING TUBULAR RIVETS Walter George Mitchell, Aurora,- Ill., asslgnor to Independent Pneumatic Tool Company, Chi cago, Ill., a corporation of Delaware . Application June 11, 1943, serial No. 490,546 ' ~ ` 22 Claims. (C1. 21a-19) ‘ 2 l to control the amount of set or compression to be given to the rivet in upsetting or collapsing the same; and To provide an interconnection between the an vil and the lever of the riveting stroke producing mechanism of the tool to prevent rotation of the This invention relates to power operated tools for installing internally threaded tubular rivets for blind riveting operations in airplane and other work. - _ The principal object and purpose of my inven tion is to provide a simple and eiiective portable anvil with respect to the rivet. power operated hand manipulated tool for in- ~ - The invention consists further in the features of structure hereinafter described and claimed. In the accompanying drawings To provide a tool construction in which- the 10 Fig. 1 is a longitudinal sectional view with action and reaction members are in the form of parts in elevation of a riveting tool constructed relatively movable anvil and rotary spindle ele in accordance with my invention; ments, respectively, mounted on the tool support, Fig. 2 is a cross-sectional view taken on line the spindle having a swiveled connection with . the tooly support for rotation to engage and dis 15 2-2 of Fig. 1; Fig. 2A is a. sectional ,view taken on line 2A-2A engage the threaded portion of the rivet and of Fig. 1 to show details of construction to be later nxed against endwise movement with respect to stalling these tubular rivets, the invention having among its specific objects the following: / the tool support, whereby pressing the anvil out described; ‘ Fig. 3 is a cross-sectional view with parts in the tool when engaged against the rivet in the 20 elevation taken on line 3--3 of Fig. 1 to show the actuating mechanism for the rotary control valve work imparts movement to the spindle and the of the tool; ` support relatively to the anvil to collapse or up Fig. 4 is an end view of said control valve to set the rivet engaged by the spindle; ' show the ratchet arrangement thereon; To provide a tool structure in which> the power Fig.- 5 is a sectional View taken on the lcurved operated motor means employed for respectively 25 line 5--5 of Fig. 4 to show the step-shaped grooves rotating the spindle and pressing the anvil out and the spring biased plunger engageable there wardly of the tool support against the rivet are with; selectively controlled by a single control means Fig. 6 is .a cross-sectional view taken on line operable by the operator holding the tool to sim wardly of the tool support by the power means of - plify and facilitate the handling and manipula tion of the tool; 30 6--6 of Fig. 3, part of the 'actuating trigger lever being indicated in broken lines; Fig. 7 is a longitudinal sectional view with parts To provide the control means in the form of a in .elevation showing the spindle in engagement single rotary member movable into a number with the threaded portion of the tubular rivet of successive rotative positions to control the op eration of the tool motors in the desired cycle, 35 in the first step of connecting these parts; Fig. 8 is a similar view of the same parts show- . to wit, to rotate the spindle to engage the rivet, ing the rivet after being collapsed or upset by topress the anvil against the rivet in the rivet the tool; . ing stroke of the tool, and thereafter rotate the Fig. 9 is a vsectional view of a detail of con spindle in reverse to release the spindle from the collapsed rivet and return the power means to 40 struction to be hereinafter described; Fig. 10 is a cross-sectional view taken on line the start of the riveting stroke; lll-_I0 of Fig. 9; To provide the control means with a single ac Fig. 11 is a side view of the bushing for the tuating lever which by a ratchet or equivalent rotary control valve; mechanism enables the control member to be turned through said respective .rotative positions 45 Fig. 12 is a diagrammatic view indicating the passage arrangement in the tool construction for in the successive operations of the lever; connecting the two pressure fluid responsive mo -To provide a signal device in the tool structure for indicating~ to the operator when> the riveting stroke of the tool has been completed; tors through the control valve; and ' y the riveting stroke of the tool may be adjusted preferably in the form of a casting shaped to Figs, 13 to 16 inclusive are diagrammatic views To provide a switch mechanism for the signal y50 illustrating the‘various rotative positions of the control valve in supplying pressure ñuid to the device and which switch mechanism is operable respective tool motors in the operation of the tool. in the riveting _stroke of the tool at the terminus In the tool structure shown in the drawings, thereof; ì . ' I~indicates the frame or main support of the tool To provide an adjustment in the tool whereby r 2,4.os,svs 3 provide a pistol grip type of handle 2 an'd a section 3 to house and mount the two motor ele ments 4, 5 of the tool. 'I'hese motor elements 4. 5 are arranged one above the other in parallel and both in the _embodiment shown are pneu matically operated. The upper motor element 4 screwed on the spindle‘is drawn against'the an vil . . ‘ The rotor 23 has shaft extensions 24, 24 at its opposite ends and these extensions serve to mount the rotor in ball bearing units 25, 25 incorpo which is of the rotary type is divided from the rated in the motor structure as shown in Fig. 1. 'I'he motor has end. plates 26, 2l at the respective lower motor element >Fs lwhich is of the» recipro cable type by a wall section 6 providing a part of the frame casting as shown in Fig. 1. The live bearings and these end plates complete the motor cylinder as _shown in Fig. 1. As there illustrated, the end plates have a doweled connection with ñ or compressed air required to operate the motor elements is supplied thereto under the control of a manually operable control valve l. rotatably mounted within the handle 2 below the lower motor element 5. The handle 2 is provided with an air supply passage 8 having a tapped opening 9 at the lower or butt end of the handle for con nection with an air supply hose (not shown). The handle member 2 has a chamber I0 provid the intervening cylinder element I3. ' Located within the housing I2 is a’rivet en gaging spindle or action member 21 slidably mounted at its forward end within the anvil I3 and connected `at its inner end with the rotor 2li for rotation thereby. In the embodiment’shown, this connection is made through a' reducing gear drive 23 of the planetary type. The sun gear of this drive comprises gear teeth on the adjacent ing a reservoir from which a lubricating oil is fed 20 shaft extension 24 of the rotor 20 and planet into the air stream in the passage 8 through an gears 23, 23 on a carrier 30„the planets 23 mesh oil feed regulator (not shown) mounted in a re ing with the sun gear and the internal teeth ci' a ring gear 3| of the drive as shown in'Fig. 1._ The cess II in the handle wall which divides the air passage 8 from the reservoir chamber IIJ as shown carrier 30 has a hub portion 321with which the in Fig. 1. inner end of the spindle 21 is connected for direct Bolted or otherwise rigidly secured to the front side of the frame section 3 is a tubular housing I2 enclosing theV operative parts of the machine 'rotation thereby. This connection comprises a l non-circular:head 33 at the inner end of the ' spindle fitting in a complementary shaped recess in the hub section 32 and clamped therein by a on the front side of the frame and mounting a reaction member or anvil I3 at the extreme front 30 clamp nut 34 through which the spindle extends. end of the tool. The anvil I3 is cylindric in form _The motor assembly 4 and its drive 25‘are locked ' in place within the handle section 3 against and has a sliding ñt within a sleeve I4 which has shoulders therein by a nut-element 25a screwed a screw threaded connection with a bushing I5 into the handle section at the rear end of the fitted within a bore at the front end of the hous ing I2 .as-.shown herein. A spring ‘biased detent 35 tool. ‘ This arrangement holds the spindle 2l» pin I6 carried by the housing I2 and extending through the bushing I5` engages the sleeve I4 at against endwise movement within the tool case, providing, however, a swiveled connection of the a circle of teeth I1 thereon for holding the sleeve I4 against accidental turning. A helical spring spindle with the tool support. - The motor element 5 is of the reciprocating type » I8 normally urges the anvil inwardly, said spring 40 having a cylinder'> 35 and a contained piston 35.. ' The l-atter'is-secured-to a piston'rod 31 which surrounding the anvil within the sleeve I4 and extends into -the housing I2 ‘throughvthe A'i'ront bearing against shoulders on said respective parts. header 33 of the cylinder 35, said'header con The motor element 4 is of the rotary type hav stituting an mtegralwall portion of the frame ing a cylinder I9 fixed against rotation within the frame section 3 and a rotor 20 eccentrically 45 casting Iy as shown herein. Theopposite or rear end of the cylinder as is closed by a cap elementv Y. mounted within the cylinder I9 as shown in Fig. , 12./ The rotor 20 contacts with the cylinder I3 at one point only in its vcircumference to divide the cylinder into two crescent 'shaped/chambers - 39, which also closes the mounting for the motor . >element '4. secured in place by bolts or screws 43 f ` as indicated inFig. 1. « , - . - which co-operate with radial ,blades 2'I` slidably Located .within the housing. I2 is a‘power actu carried by the rotor in slots therein as invmotory structures of this general type. The-'crescent between integral’lug elements 43, '43 'cast integral ated lever 4I fulcrumed at 42 on the housing I2 - ' shaped'chambers provide for the expansion and -' _with the housing'` adjacentto its front end. The exhaust, respectively, of the live air'- suppliedto the motor 4 and _control its rotation. in reverse di-v rections. ` Th'e ports for admitting and exhausting pres sure fiuidto and from the rotor cylinder, I9 are shown at 22, 23, respectively,- mrig. 12.- when the rotor 20 is rotated towards the right- or clock- f wise as viewed in Fig. 12. the pressure fluid is admitted to the port 22 and exhausted at the port , 23. The rotor is rotated in this righthand direc tion to screw the spindle or action member to be later described into _the threaded portion ofthe tubular rivet to be installed. ` A reverse rotation of the rotor 20, that is counterclockwise to re lease the rivet, is accomplished by .admitting pressure fluid at the port 23 and. exhausting it at the port 22. This is under the control of the valve ‘I as will be later described. As will be noted in Fig. 12, the motor element 4 is of relatively light power, four blades being employed, so that lever 4I is comprised of angularly disposed arm portions 44, 45, the former' extending from the fulcrum 42 to the powerr delivering end 45 of the lever 4I and which power delivering end 45 en gag'es the inner end of the anvil I3 in a slot therein to be later described. An extension I3c of anvil ,I3 provides an extended surface to thev _ ' bottom of this slot. The arm portionv 45 o! the lever 4Ijextends rearwardly from the fulcrum 42 and has an underlying cam vsurface ~4'! which in the normal position of the lever 4I' at the start of a riveting stroke is in angular relation to the piston rod 31. The latter. extends between the lever arm 45 and a co-operating track-way 43 secured by screws 43 to the housing I2 below the lever arm 45 as shown in Fig. 1. The piston rod 3_1 carries a driving head 50 at its outer end between the lever arm 45 and the track-way 48. Said driving head 50 is bifurcated having side walls 5I,` 5I between which are jour naled upper and lower rollers 52, 52 on axis orv the rotor will stall easily as soon as the rivet being 75 shaft elements 53, 53 as 'shown in Fig. 2.. Said 8,408,076 , - 5 vIn the normal or starting positional’ the parts axis elements 5_3 extend through spacer plates 54, 54 located between the side wallsll to hold asshowninl'lg.1.thevalve1isinitsilrsto? the rollers 52 in contact with the cam surface neutral position as detailed in Figs. 12 and 13. At this time the piston 36 is at the forward end -. 41 and the track-way 46, respectively, and out of peripheral contact with each other.r The axis 5 of the cylinder 35 and the inlet port 11 in the> valve bushing» 51 and which port vconnects with elements 53 extend through vertically elongated the main supply passage I in the» tool handle 2 slots 55 in the walls 5| of the driving head “to is closed by‘ the valve body asshown in ‘Figs. 12 and 13-X and 13-C, the latter being taken on the spacing between the cam surface 41 and the track-way 49. The shaft elements 53 are locked 10 line C-C 'of Fig. 13--X. 'I'his cutsv oil the iiow /compensate the roller action to any variation of ' in place and the' lever 4| is provided in its upper portion with a channel orgroove 56 to accommo ` of uve air to both of the tool 'motors 4„5. , The driving head 56. on the piston rod I1 is now at_ the end of its stroke nearest tothe fulcrum 42 date the spindle 21 whereby the power delivering `.end 46 of the lever 4| may straddle the spindle of the lever` 4| and the spring “has returned the anvil I3 and the lever'- 4| to their starting positions as shown in Fig. 1. 'I'he _arm‘portion 45 and apply power approximately along the center line of the anvil I3. ‘ ' The control valve 1 is in the form of a cylindric ' of the lever 4| is now at an angle or inclination to the line of movement of-the piston- rod 31 and the lspindle 21 which extends through an aperture member rotatably mounted within a comple mentary' shaped bushing 51 stationarily fitted within the handle 2 at the location for the valve. 20 in thev anvil Ilhas its threaded outer end 16 pro jecting beyond the plunger to be engaged with The forward end of the valve 1 is flanged at 58r to overlie the adjacent end of the bushing 51 to » the Ythreaded portion 19 of the tubular rivet 86 to be installed and collapsed by the‘tool. hold the valve in place. This ñange 58 has a In establishing the foregoing connection, the complement of peripheral ratchet teeth 59 en rivet 80 is held by the operator between the fin gaged by a spring 60 to hold'the- _valve from a gers of one hand and applied over the threaded reverse turning. The spring 60 is mounted in end 18 of the spindle, the latter being inserted a housing section 6I secured over the front end into the tubular stem 9| oi' the rivet through its ._ of the valve 1 by one or more screw elements62 as shown in Figs. 1 and 3. This housing section ‘ outer ñanged end I2 until the taigeaded end 16 6| provides a chamber 63 in which the valve 30 of the spindle engages the thre ed portion 19 of the rivet. Now, the operator holding the rivet iiange 58 and the spring 60 are located. The front end ofthis chamber is closed by a cover A plate 64 secured in piace by the screws 62. Pivoted in the chamber 63 on a pivot pin 65 is trigger lever 66. The latter extends out' of the chamberv 63 through a slot 61 in the surround against- turning depresses the trigger lever 66 to turn 'the valve 1 its first quarter turn into the position shown in Fig. 14. 'I'his connects the - >ports 11 and 83 'in the bushing 51 through a recess 84 in the valve member and live air is 'supplied . to the rotary motorthrough its port 22 to rotate ing body portion 68 of the housing section 6|. Beyond the slot 61, the trigger lever 66 has an- the spindle-21 to screw the same into the thread ed portion 19 in the tubular rivet. 'I‘he operator A angular end portion 66a extending alongside the handle 2 to be within easy access for actuation ,40 holds the rivet until the threaded ' connection -draws the iianged end 62 ofthe rivet against the and is provided at its outer end >with a serrated ' thumb piece 69 as shown in broken-lines in Fig. 6. anvil '|3. The` latter due to its interconnection With the arrangement disclosed, the _operator with the lever 4| is held against rotation and the motor stalls and ceases to revolve when the rivet holding the tool may conveniently depress the trigger lever to turn .the valve 1 to its various positions for supplying pressure iluid to the tool motors in the sequence required for a rivet in stalling and compressing operation. To turn the valve member from the trigger' ' leverl66, I provide a ratchet mechanism compris ' is brought against the anvil Il. The interconnection just above vmentioned, comprises the co-action of the sides of the lever 4|> at its power delivering end 45 with the sides |3a, |3a of a milled slot |317 in the anvil 'I3 at 50 its inner end as detailed in Fig. 2A. As shown in ing an arm 10 pivoted to the inner end of the trigger lever and overlying the front end of the Fig, 1, thebottom of the slot |317 is curved for valve member within the housing chamber 63. endV of the anvil A spring biased plunger 1| is carried at the lower or free end of the arm 10 and presses against the front end of the valve member 1 to co-act with a series of forwardly opening, arcuate guide grooves 12 as detailed in Figs. 4 and 5. The grooves 12 are arranged in a circle about the valve axis and have inclined bottom walls 13 interposed by shoulders 14 both of which provide ease of movement of the lever against the inner I3. ' , ' ' _When the valve] is in its ñrst and second ro tative -,positions just above described and 'as shown in Figs. 13 and 14, the valve body closes the bush ing port 85 and live air is cut oil.' to the casing , passage 66 which connects the bushing port 65 with the forward port 81 at the front end of 60 the cylinder 35. Live air may enter the rear end of the cylinder 95 from the.bushing port 83 through the rear port 88 in the cylinder and the interconnected casing passages 89, 96 which con nect the bushing port 83 with the motor ports 2.2 trigger lever 66. The Ashoulders 14 have a ninetydegree spacing for imparting quarter turns to the 65 and 88, respectively, as shown in Fig. l2. This, however, does not affect the position of the pis valve. 'A spring action 15 returns the trigger lever ton 36 in the cylinder 35 for the reason that said 66 to its starting position and the plunger snaps a stepped formation for turning `the valve mem ber 1 by the arm 10 on each depression of the f over the next shoulder to be engaged. The spring piston is at the frontendof the cylinder at the limit of its return stroke. Motor port 23 is con 15 is anchored at its lower end in lthe housing chamber 63 and is connected at its upper end to 70 nected at this time to the exhaust through bush ing ports 9|, .92 and the intervening recess 93 in the trigger‘lever'ßû at a lug 16 thereon. 'The the valve body 1 as shown in Figs. 13-D andV circular -sides of .the grooves 12 maintain -the 14-D, respectively. Port '23 is connected with plunger 1| within the path of the shoulders. the bushing port 9| by a passage 94 in the tool The tool structure shown and described oper-v . 75 casing. ates as follows: ' _ 3,403,015 8 After the rivet .80 has7 been engaged with the unscrewed from the threaded portion 10 of the spindle 21 and seated against the outer end of the anvil I0, the rivet is inserted byl the tool into the registering openings 95 inh the plates o'r parts 96. 95 to be riveted and clamped together collapsed rivet andthe -tool is freed for the next rivet installing operation. The exhaust from the motor 4 is through the motor port 22, 8_9." bushing ports 00, 02 and valve recess- 04. Some of this exhaust air which is still under as shown in Fig. 8. This is done from the ac-v cessible or outer side ofthe assembled plates, and the opérator holding the tool presses the flanged pressure enters the cylinder port 00 through passage 90 and forces the piston 00 on its forward or return stroke to the starting position as shown end 82 of the rivet against the outermost _of said plates. The latter which constituie the work are 10 in Fig. 1. The spring I8 maintains the lever 4| against the driving head 50 and when the fixed against movement and resist this pressure. trigger lever is again depressed to stop the reverse The operator then depresses'the trigger lever 68 rotation of the motor 4 and the return stroke of to turn the valve 1 into its third quarter position the piston. the valve 1 is turned to its starting as shown in Fig. 15. Now, live air is supplied ' or neutral position as shown in Fig. 13. The tool to the forward end of the cylinder 00 on the front is now ready for the next rivet to be installed side of thetpiston 06 and the piston-is forced and the operations -just above ldescribed are re- rearwardly on its riveting stroke to 'press the peated in the order stated.> l ~ lever 4| against the anvil i0 toproiect the latter Inthediagramsshowninli'igs. 13to18inoutwardly of the tool casing |----|2. This forces the flanged end of the rivet against the outermost 20 elusive, it may bepointed out that the same pat tern is followed throughout all of the figures. the sections being taken on section lines correspond ing to those marked in'Fig. 13. It also may be remarked that the trigger lever >00 is depressed collapse the tubular' stem 8| of the rivet against 25 to its fullest extent oneach valve turning stroke. the trigger lever being returned to its star-tim the innermost> of the plates as indicated at' 01 position when released by the spring action here in Fig. 8. It will be noted that the rivet stem is of the stationary plates and the resulting action isA that the tool casing or support |---|2 and the spindle 21 connected thereto are moved endwise -ln unison rearwardly in respect to the anvil to y collapsed in its portion between the innermost inbefore mentioned;V plate 90 and the threaded portion 19 of the rivet as engaged by the spindle 21. The’riveting pres-. 'I'he signal for the. tool comprises an electric lamp l90 mounted in theend cap 00 -of the tool . sure increases gradually as the cam surface 41 in a cavity I“ behind a translucent cover |0|. The light bulb or the cover or both may be given ' a distinctive color,~for example red, to readily on the lever `'4| approaches parallelism-with the >piston rod 31, `the'driving headI 0B being mcrvedv away from the fulcrum 42> of the lever and its power delivering end 46 on the riveting stroke. With the valveY 1 in this third quarter position as shown in Fig. l5, it will be noted that the ~ call attention thereto whenl lighted. >The lamp 90 is grounded to the metal frame or tool. support I and isconnected by a wire |02 with adry-cell battery |00 located in a. chamber |04 provided ' inlet port 11 is now connected with the bushing ' ' 'therefor in the front casing li2 ofthe tool as port B5 through the connected passages”. 00a, sembly. This chamber |04 is normally closed by 98h in the valve body as shown in Fig. 15-X and 40 a cover plate |00 fastened> to the tool casing I2 and removable for battery replacement. ‘The the sectional views Figs. 15A and 15-C. The battery when inserted in 'the‘chamber |04 has exhaust from the rear end of the cylinder 35 is ' its rear pole in electrical connection with a con- Y through the cylinder port 88, casing xpassages tact ||i6 mounted in an insulator |01 at the rear 90 and 89, and valve lbushing ports 83 and 92 ' which are connected at this time by the port 04 45 end o_f the chamber and in contact with a. spring biased terminal |040 in an insulating sleeve |00 in the valve member 1 as shown in Fig. 15-B. and to which terminal the conduction wire |02 Casing passages 90 and 89 are connected with. the' is connected. 'I'his connection may also be made port 22 of therotary motor as shown in Fig. 12 by extending the wire |ß2 into the space between and the exhaust air from the rear end of the cyl~ inder 35 may enter the rotary motor through port so the insulator disc m1 andthe sleeve |00 .and con necting the wire by a. terminal clip engaged by 22. The rotary motor 20 is, however, at this time s. screw at the outer end of the contact plug |00. open to the exhaust port 92 through motor port Located at the front end of the chamber |04 is a 23, casing passage se, bushing port 9| and valve telescopic cartridge ||0 of insulating material port 93 as shown in Fig. l5--D. The alternate path for the exhaust air precludes the possibility 55 having a contact ||| which is pressed against the forward terminal || 2 of the battery. '111e of the pressure being appreciably above atmos coiled spring ||3 of the cartridge which performs phcric .pressure and the rotary motor 20 is not this function seats against a metal cross-pin ||4 turned to effect the screw threaded connection of at the front end of? the cartridge and which pin the spindle 21 with the tubular rivet 8|. The has its opposite ends soldered to a contact ring bushing port 92 is connected to the atmosphere |I5 carried by the cartridge in the path of a lug , through an exhaust outlet (not shown) in the projection H6 at the inner end of the anvil l0. tool casing l-3.. When the piston 36 completes W'hen the parts just above described are in its rearward or riveting stroke, the operator again their normal or starting positions as shown in depressesthe trigger lever 66 to turn the valve Fig. l, the lug IIS isv out of contact with and 1 into its fourth quarter position as shown in spaced rearwardly of the contact ring _lli and Fie. 16. ' . . - When this fourth'quarterposition is reached. the valve 1 has been turned to cut oif the' flow of live air to the front end of the cylinder 35 at the electrical circuit to the lamp 00 is open. 0n a riveting stroke, when the plate H5 is brought into contactl with the lug H0, the lamp circuit . the bushing port lle-as shown in Figs. lS-X and 70 is closed and the lamp is ignited. _This indi 16-A. Inlet port 'il is now connected with the ‘bushing port 9i through valve recess 93 as shown Cates t0 the operator that the riveting stroke of the tool is complete and that the rivet hasbeen collapsed or upset. The operator then depresses the trigger lever v66 to unscrew the spindle 21 in Figs. lö-X. iii-C and 1li-_D and live air is supplied to the rot motor port 23. The rotor is now rotated in reverse andthe spindle 21 is 75 from the rivet. It is to be understood, that the l. 2,403,675 anvil I3 is of metal to complete the lamp circuit when the contacts IIS, IIB are engaged.A The sleeve Il and the bushing I5 provide an adjustable mounting in the tool support so that the riveting stroke of the tool may be‘adjústed to determine the amount of set or compression given to thel rivet in upsetting the same. .This provides for proper upsetting of Ithe rivets to having a swiveled connection with the support y and iixed against endwise movement with respect thereto, said spindle extending through the ` anvil and having a threaded outer end foren gagement with the threaded portion of the rivet, two motor means in the support, one for rotat , ing the spindle for engaging and disengaging vthe or cracking of the .folded metal in the upset por same ywith respect to the rivet, and the other for projecting the anvil outwardly relatively to the support for collapsing the rivet engagedA by tion 91 of the rivet from an excess of pressure from a longer than desired riveting stroke, this ation of said respective motor means. clamp'the plates together and avoids checking the spindle, and means for controlling the oper-- " ~ being essential because the upsetting action takes 3. A tool for installing internally threaded place on the inner side of the plates and is not tubular rivets, said tool comprising a support, an anvil relatively slidably mounted in the sup port for engaging the rivet, a rotary spindle having a -swiveled connection with the support and fixed against endwise movement -with respect visible to the operator in these blind riveting operations. The adjustment- is made by screwing the sleeve I4 inwardly or outwardly to lengthen or shorten ‘the riveting stroke. ’I'he length of thereto, said spindle extending through the anvil the stroke is controlled by the spacing between the inner end of the sleeve Il and the lug IIB at the inner end of the plunger I3. Hence, by vary ing this spacing, the extent to which the lever 4I and having a threaded outer end for engagement with the threaded portion of the rivet, a lever fulcrumed in the support, _and means in the sup port for rotating the spindle 'and other means for must be moved to upset a rivetmay be controlled. To facilitate turning the sleeve I4 for adjustment, its outer end Ita is fashioned to be engaged by pressing the lever against the. anvil for respec~tively engaging and disengaging` the spindle with respect to the rivet and projecting the anvil a wrench or other turning instrument. ’I‘he sleeve I4 is made accessible for this purpose on unscrewing the cover cap I2a from the front end of the tool housing I2. » outwardly relatively to the support for collapsing the rivet engaged by the spindle. 4. A tool for installing internally threaded_ tubular rivets, said tool comprising a support, an anvil relatively slidably mounted in the sup port for engaging the rivet, a rotary spindle hav , In all instances of anvil adjustment, the lamp circuit contacts H5, H6 follow the same spacing whereby the signal will go on at the terminus of the rivet-ing stroke. This follows from the fact that the headed end 'H1 vof the movable member I I 8 of the cartridge H0 follows valong with the sleeve I4 in adjusting the same. Failure of the lamp to ignite on a riveting stroke prompts the opera-tor to hol-d the tool against the rivet until the lamp signals a completion o_f the riveting stroke. This insures properand effective riveting operations which in these blind riveting con ditions are not visible to the operator. The riveting tool of my invention is simple' in constructionv and operation- and effective in ing a swiveled connection with the support and iixed against endwise movement with respect thereto, said spindle extending through the anvil and having a threaded outer end for engage ment 'with the threaded vportion of the'rivet, a lever fulcrumed on the support and having a y cam surface at its power receiving end, and two v power actuated means in the support, one for rotating the spindle and the other acting on the cam surface lof the lever for respectively engaging and disengaging the spindle with re; >spect to the rivet and pressing the lever against the anvil for projecting the same outwardly rel installing and compressing these tubular rivets. 'I'he tool provides ample power for the upsetting operation and added to tlhis is the important fac .tor of having a single control for operating both of the tool motors, whereby the manipulation of ' atively to the support to collapse the rivet en-' gaged by the spindle. an anvil relatively slidably mounted in said sup port for engaging the rivet, a rotary spindle hav ing a> swiveled connection with the support and i'lxed against endwise movement with respect The details of construction and arrangement ofparts shown 'and described may be variously changed and modifled without departing ’from the spirit and scope of my invention, except as point I claim as my invention: ~ , , , tubular rivets, said tool comprising a support, _ the y,tool is materially simpliñed. ed out in the annexed claims. _ 5. VA tool for installing internally threaded thereto, said spindle extending through the anvil 55 and having a threaded outer end for engagement with the .threaded portion of the rivet, a lever fulcrumed on the support and having` a cam v1. A tool for installing internallyl threaded tu bular rivets, said tool comprising a support, an .surface at its power receiving end, a reciprocable -driving element in the support and acting on anvil relatively slidably mounted in the support for engaging the rivet, a rotary spindle having the cam surface of the lever for pressing the lever against the anvil for projecting the same «a swiveled connection with the support and i‘lxedv outwardly relatively to the support to collapse against endwise movement with respect thereto, said spindle extending through the anvil and the rivet engaged by the spindle, 4and two power operated means in the support, one for recipro having a threaded outer end for engagement with the threaded portion of the rivet, and means in 65 cating the driving -element and the other forrotating the spindle with respect to the rivet. the support for rotating the spindle and other means for projecting the anvil outwardly rela 6. A tool for installing internally threaded tively to the support for vrespectively engaging tubular rivets, said tool comprising a support, and disengaging the spindle with respect to the an anvil relatively slidably mounted in the sup rivet and collapsing the rivet engaged by the 70 port for engaging thexrivet, a rotary spindle hav spindle. ‘ ing a swiveled connection with the support and -2. A tool for installing internally threaded I tubular rivets, said tool comprising a support, an anvil relatively slidably mounted in the sup fixed against endwise movement with respect thereto, said spindle extending through the anvil and having a threaded outer end for engagement port for engaging the rivet, a rotary spindle 75 with. the threaded portion of the rivet, a lever ful :recaen , . s . in « 12 A crumedon the support and having av cam surface relatively movable anvil and rotary spindle ele at 'its power vreceiving end, a track-way on the support in .opposition to said cam surface, a- ments -mounted -in the support. said spindle ex operated means in the support, one for recipro-' therefor in rthe support, comprising - separable cating the driving- head and-the other for rotat _ing the spindle to engage and disengage the same the anvil, respectively, for closing the signal cir tending through the anviland having a'threaded outer end for engagement with the threaded por lreciprocable driving head in the support inter posedbetween and acting on the track~way and ci tion of -the rivet, power actuated meansy in the support for imparting relatively endwise move the cam surface, respectively, when moved there lment tothe anvil and the spindle for collapsing along >away from the fulcrum for pressing the the rivet engaged by the spindle, other means for lever against the anvil to project the same out rotating the spindle with respectl to the rivet, and wardly relatively to the support to collapse the rivet engaged by the spindle, and two power 10 an electrical signal and ajswitch and circuit with respect to the rivet. _ . 7. A tool i'or` installing internally threaded 15 contactsfin the signal circuit on the support and cuit at the terminus of the riveting stroke of the tool. . l2. A tool for installing internally threaded tubular rivets, said tool comprising a support, relatively movable anvil‘and rotary spindle ele mounted in said support, the action member. `be ments mounted `in the support, said spindle ex - ing in the form of a rotary, spindle-having a threaded outer end for engagement with. the 20 tending through the anvil and having a threaded outer end for engagement with-the threaded por threaded portion ofthe rivet, and means in the tion oi’ the rivet, power 4operated means in the support for rotating the spindle with respect to vsupportior rotating thespindle with'respect to the rivet and other means for collapsing the rivet the rivet and other means ioré‘collapsing the rivet engaged bythe spindle -by pressing on the re action member to move the-spindle and. the sup 2.5 engaged by the spindle-:by imparting relative endwise movement to the anvil and the spindle port relatively thereto. » in the riveting stroke of _the tool, and means pro 8. A tool for installing internally "threaded Aviding a mounting `iîor the anvil in the support tubular rivets,-said tool comprising a' support, tubular rivets,` said tool comprising a support, relatively movable action and reaction members relatively movable action- and> reaction members comprising a sleeve threadedly connected there being ~in the form v of Aa' rotary- spindIehaVing a threaded outer end for engagement with the said sleeve acting for adjusting the length of said sîrotke to determine the set to be given to the threaded -portion-oit the rivet, two pressure iluid r ve . >mounted in said support, the action vmember 30 withand housing a spring acting on the anvil, responsive means in the support, one for rotat ing the spindle Vwith respect to the rivet, and the other for collapsing the rivet engaged by the spindle .by pressing on the reaction member to move the ,spindle and the support, relatively . thereto, and `ineans for controlling the supply of pressure fluid to said respective pressure ñuid responsive means. A 9. A' tool for installing internally threaded `tubular rivets, said tool comprising a. support,. >an -anvil carried thereby, a spindlemounted in the support and having rotation relatively to the anvil, said spindle having a threadedouter end for engagement with the threaded portion of the . 13. A tool for installing internally Athreaded tubular rivets, said tool comprising a support, vrelatively movable anvil and rotary spindle ele ments mounted in the support, said spindle'ex tending through the anvil and having a threaded outer end lfor engagement with the threaded por tion vof .the-rivet, power actuated Ameans in the support for rotating the spindle with respect to the rivet and other means for collapsing the rivet engaged by the spindle by imparting relative f endwise movement to the anvil and the spindle iny the riveting stroke of the tool, said anvil being ~spring biased in a sleeve threadedly mounted on the support, the threaded mounting of the sleeve permitting adjustent of the length of said stroke to determine the set to be given to the rivet, and spindle'for collapsing the rivet engaged-by the 50 a check device for holding the sleeve in its ad dusted positions. l spindle and the anvil, other means for rotating 14. A tool for 'installing internally threaded the spindle to engage and disengage the same Awith 'respect to the rivet, and electrical signal ì tubular, rivets, said tool comprising a‘support, relatively movable anvil and rotary spindle ele means on the support and operable in response to the riveting stroke of the tool on closing contacts 55 ments in said support, said spindle extending in the signal circuit for indicating a completion through the anvil and having a threaded outer , end for engagement with the threaded portion of, of said stroke. . _ ' j 10. A tool for installing internally threaded the rivet, two pressure fluid responsive means in the support, one operating through the anvil fortubular rivets, said tool comprising a, support, an anvil carried thereby, a rotary spindle mounted 60 collapsing the rivet engaged by the spindle, and the other rotating the spindle relatively to the in the support and having a threaded outer end for engagement with the threaded portion of the ’ .rivet to engage and disengage the same, a single . rivet, power operated means in the support and source of pressure iluid supply for both of said having a riveting stroke operable through, the pressure fluid responsive means, and a single spindle for collapsing the rivet engaged thereby, 65 valve for controlling the supply of pressure fluid rivet,»power actuated means in the support and having- a riveting stroke operable through the other means for rotating the spindle to engage » to said respective pressure fluid - responsive and disengage the same _with respect to the rivet, , l5. A tool for installing. internally threaded andan electrical signal and a switch and circuit therefor having separable contacts on `the anvil tubular rivets, said tool comprising a support, and the support, respectively, and which contacts 70 relatively movable anvil andv rotary spindle ele ments in the support, said spindle extending -are closed in .response to the riveting stroke of through the vanvil and having a threaded outer the tool for indicating the completion of said end for engagement with the threaded portion of stroke. the rivet, two pressure fluid responsive means in 11.,A tool for installing internally threaded the support, one operating through the anvil for tubular rivets,vsaid tool comprising a support, means. s A ' ` 2,403,675 v ' i3 collapsing the rivet engaged by the spindle, and the other for rotating the spindle with respect to the rivet to engage and disengage the same, a single source of pressure iluid supply for both of said pressure fluid responsive means, a rotary said spindle extending through the anvil and" havinga threaded outer end for engagement with the threaded portionof the rivet, power oper ated means including a lever fulcrumed on the support for pressing the anvil outwardly rela tively tothe support for collapsing the rivet en valve in the support for controlling the supply of -~»gaged by the spindle, other means for rotating pressure ñuid to the respective pressure ñuid re the- spindle with respect to the rivet, and an in sponsive means, and a single actuating member terconnection between the lever and the anvil for turning said valve. 16. A tool of thecharacter deñned in claim 15 10 for holding the latter> against rotation. 20. A tool for installing internally threaded characterized by the fact that the actuating tubular rivets, said tool comprising a support, means for the valve comprises a lever and a relatively movable anvil and rotary spindle ele ratchet mechanism therefor in the support and ments mounted in the support, said spindle being on `the valve, respectively. 17. A tool of the character defined in claim 15 15 connectible with the rivet through its threaded portion, power actuated means in the support for characterized by the fact that the actuating rotating the spindle to connect and disconnect means for the valve comprises a lever on the 'Y the same with respect to the rivet and other support,- a ratchet mechanism on the valve hav means to upset the rivet connected with the ing >ratchet teeth about the valve axis, an arm pivoted to the lever and overlying the portion of 20 spindle by imparting relativev endwise movement to the anvil and the spindle on the riveting stroke the valve provided with said ratchet teeth, and of the tool, and means for adjusting the length a spring biased plunger carried by the arm and of said stroke to determine the setto be given to co-acting with said ratchet teeth for turning the the rivet including coacting abutments on the support and the anvil, respectively, the spacing 18. A tool for installing` internally threaded between'the abutments being varied to determine tubular rivets, said tool comprising a support, the length of said stroke. relatively movable action and reaction members 21. A tool for installing internally threaded 'in the support, one of said members being in tubular rivets, said tool comprising a support, a the form of a rotary spindle extending through the other memberand having a threaded outer 30 sleeve threadedly mounted in said support, a spring biased anvil slidably 'mounted in said end for engagement with the threaded portion of sleeve and normally projecting beyond the outer the rivet, two motor elements in the support, one end of the same,> a spindle revolubly and slidably for creating relative endwise movement between „mounted in the anvil and extending therethrough the action and reaction members for collapsing and connectible at its outer end with the thread the rivet engaged by the spindle, and the other ed portion of the rivet to be upset by the tool, for rotating the spindle for engaging and disen-l power actuated means in the support for rotat gaging the same with respect to the rivet, a rotary, ing the spindle to connect and disconnect the control means on the support for controlling the same with respect to the rivet and other means operation of said respective motor means, said control means having predetermined rotative 40 to upset the rivet- connected with the spindle by imparting relative endwise movement to the anvil positions for first screwing the spindle into the , and the spindle in the riveting stroke of the tool, threaded portion of the rivet and then collapsing said sleeve and the anvil having coacting abut the rivet through the spindle and thereafter re-“ ments to determine .the riveting stroke of the tracting the collapsing l_means and unscrewing 1 the spindle from the rivet, and a single actuating 4. tool, and said sleeve having its outer end formed to be engaged for turning the sleeve relatively to member carried by the support for successively the anvil to adjust the spacing between said ` moving the control means through said respective abutments. rotative positions. ' 22. A tool of the character deiined in claim 21 , 19. A tool for installing internally threaded characterized by the fact that a cap device fits tubular rivets, said tool comprising a support, an on the support over the outer end of the sleeve anvil slidably mounted in the suppOrt for en and. that the anvil and spindle elements exten gaging the rivet, a rotary spindleA having a swiv valve. » f _ , eled connection with the support and fixed against endwise movement with respect thereto, through said cap device. WALTER GEORGE MITCHELL. '