US2403262A - Tool for collapsing hollow rivets - Google Patents

Description

July 2, 1946. R s COLLEY v 2,403,262

TOOL FOR vcoLLAPsING HoLLow RIVET;

4 sheets-sheet 1 Filed May 22, 1945 July 2, 1946. R. s. coLLEY TOOL FOR COLLAPSING HOLLOW RIVETS Filed May 22, 1945 4 Shee'CS-Shee'l 2 lmlw g @f @N @n m, QN QQ u mm Nm rJuly 2, 1946;

Filed May 22, 1945 R. S. COLLEY TOOL FOR GOLLAPSING HOLLOW RIVETS 4 Sheets-Sheet 3 July 2, 1946-. R, Q COLLEY 2,403,262

TOOL FOR COLLAPSING HOLLOW RIVETS /nyew/@ PL/555K 5-[27//5 Patented JulyZ, 1946 Zim 'rooL ron conmrsmo noLLow nrvs'rs mii-s. con, mi. omo, nlm t 'nu El'. Goodrich Company, New York, N.Y.,a oorporationofNewYork application may zz, 194s, sei-m Nn. nadas 15 claim. (ci. zia- 19) This invention relates to apparatus for installing tubular rivets, and is useful especially in inserting and upsetting tubular rivets such as those of the Waner Patent #2,149,199, issued February 28, 1939, which rivets are applied from one sid only of the work.

The principal objects of thev invention are to provide effective and compact hydraulic mechanismfor upsetting the rivet and especially to provide mechanismcapable of producing great rivetupsetting force; to provide hydraulicapparatus operable in any position in space; to provide a unitary apparatus having a self-containedl pressure-'building and utilizing apparatus; to provide for determinately limiting the` degree of upset of the rivet; to provide for effective sealing of the pressure liquid within the apparatus; to provide power controlled operation of `the hydraulic mechanism; rto provide quick-acting means for entering and releasing the rivet; to provide simplicity of construction; and to provide for convenience of operation.A y

These and other objects will appear from the following description and the accompanying drawings. i

Of the drawings,

Fig. 1 is a side `elevation of an apparatus constructed lin accordance `with and embodying the invention, the anvil being shown in the retracted position. l,

Fig. 2 is an end elevation ofthe apparatus as seen from the right of Fig.'1. n

Fig. 3 is a longitudinal cross-sectional view oi.' the apparatus, taken on line- 3 3 of Fig. 2, parts being broken away.

Fig. 4 is a detail view of the WOrking end of the apparatus with a rivet in the upset condition, the view being shown in section.

Fig. 5 is a side elevation partly in section and partly broken away showing a modication of the invention. 1

' Fig. 6 is a detail sectional view thereof, taken on line 9 6 of Fig. 5,. l

Fig. 1 is a side elevation, partly in sectionand partly` broken away, showing a further modiilcation of the invention.v

' Referring to the drawings, and first to Figs. 1 to 4 thereof, the numeral I0 designates a body, preferably of metal, and of convenientsize to enclose the mechanism and to be held, by the operator. 'I'he body is formed witha borel extending therethrough foi-receiving a rotatable rod I2 which extends through the body and has a threaded end I3 `for ,engaging inthethreads of ,ahollow rivet lThe opposite end of the rod -1 2 is preferably threaded as at I5 to engage'in a coupling member It having a lcorrespondingly threaded bore |1. A set screw I8 extends through a threaded side opening in the `coupling member and locks the rod in place. The opposite end of the coupling member has a threaded bore I9 in alignment with bore: I1 for receiving .the threaded end 29 of the rod 2|. A set screw 22 engages a threaded sideopeningin the coupling member and locks the rod 2|. to the coupling member and therefore to the rod I2.

Provision is included for manually rotating the rod 2 for entering its threaded end I3. into and releasing it from the tubular rivet. To this'end. the rod 2| is formed with an external thread 25 oirelatively high pitch, that is having sumcient pitch angle to permit rotation of the rod 2|"by axial movement ci a threaded member engaging the-thread; The. body I0 of the apparatus -is formed with a tubular extensionV 28 adapted to surround and retain the coupling member It and formed with external threads 21. An internally threaded collar 28, ist; secured about the tubular extension k26,* and. has anV internal shoulder 29 which extends inwardly to engage acomplementary shoulder 39 of the coupling member to limit axial movement of the :coupling member, while a thrust collar 3| about the draw rod -I.2;between the coupling member I6 land the body I0 reduces friction and limits axial movement of the coupling member in the opposite direction. 'Ihe collarl 29 is also internally threaded, as at 35, to engage the externally threaded end of a tubularzhousing 36 extending axially of the rod I2 and: enclosing the rod 2| while providing a' convenient handle for supporting the tool. The v.opposite end of the Vhousing 36 is internally threaded as at 31 to recase, thethreads` 25,40 aremadeleftyhanded and movement ofthe plunger handle 42 toward the housing I0 causes the rod` I2 to.l rotate in a-clockwise direction as seen when.V looking v at the. left side of Fig. 1, causing it to enterthel rivet; and

withdrawal of the plunger away from the housing I0 will cause rotation of the draw rod -inthe op- -posite direction tozrelease the rod |211-rom1the rivet A s '.f-I'j :fik

Provision is made for upsetting the rivet. To

. this end. the body il is formed to provide a cylv also formed with an integral quill 48 also coaxial with the rod |2 and within the cylinder, the quill surrounding the rod and providing a continuation of the bore for receiving the rod |2. Slideably mounted in the cylinder 45 about the quill 46 is an annular piston 41 having an integral tubuiar'extension u adapted to extend beyond the quill 40 and the body I0, the extended portion being internally threaded to receive a tubular anvil 49 externally threaded as at 50, and having a lace 55 at its outer end adapted to engage against the flange 50 of the rivet. 'I'he anvil is adjustable with respect to the piston to adjust the projection of rod I2 beyond the anvil for rivets of diiIerent sizes, the adjustment being provided by the threads l0, and a lock nut 51 is provided for locking the anvil in any position of adjustment with respect to the piston.

.For retaining the piston in the cylinder d5, the body is counterboredto provide the shoulder 90 and the counterbored portion is threaded as at l| to receive a threaded stop collar 62, a gasket 03 being provided between a shoulder of thestop collar and the shoulder 60 of the body to provide a liquidtight connection. The stop collar 62 has a stop face B4 for engaging the piston and limiting outward movement thereof.

For returning the piston, a compression coil spring 6l extends between a shoulder 66 of the stop collar'and theface or the piston and is under compression at all positions of the piston.

For advancing '.the piston and, therefore, the anvil face l toward .the rivet with respect to the rod i2, means is provided for attaining a superior nuid pressureV against the left side of the piston, such means consistlng'of a pump for pumping a liquid of low compressibility, such as a suitable oil or glycerine. and the entire pump mechanism with the exception of the operating lever but including the liquid storage space is also contained in the body l0 of the apparatus. This mechanism is as follows: 'I'he body I0 is formed with a cylindrical cavity and is counterbored to provide a shoulder 16 and a threaded enlarged portion 11 at the open end thereof. A bushing 19 extends into the cavity and is provided with a nange 19 for engaging the shoulder 'Il `against which it is sealed by the gasket 80.A

An externally threaded stumng box 9| engages the threads of the counterbore 11 and holds the bushing 1l in place. The bushing 18 is provided with a bore for receiving the pump plunger 82 vwhich extends therethrough. A gland nut 83 is threaded into the stulng box 8| against `a gland packing 94 which seals the pump plunger I2 to the cylinder.

Provision is made for reciprocating the pump plunger.` In the illustra-ted embodiments the plunger is pivotaliy connected as at 85 to a link 99 which in turn is pivotally connected as at 81 to a lever Il. The lever 88 is fulcrumed on a .pin 99 xed to an arm 90 which in turn is fixed to the 'body Il. The arrangement is such that by moving the lever I9 about its pivot 89 the plunger 22 is reciprocated in the cylinder providedv by bushing 1l. The cavity 15 iii-'connected by a delivery passage 98 to a valve cavity. 90 formed in the body Il. This valve cavity 90 is connected by an outletpassage 91 to the left end of cylinder 49 as seen in Figs. 1 and 3. Cavity 15 is also connected at its right end as seen in Fig. 3

.Y agscaaes by a suction passage 98 and by way of a connecting passage 99, a. cavity |00, and a passage |0I, to the cylinder 40 at the right side ofthe piston d1 as seen in Fig. 3. Seated in the `suction passage 98 is a valve seat |05 against which a valve ball |06 is adapted to seat. The ball is held close to the seat by a retainer |01. A valve seat |08 is provided in the valve cavity 99 and a valve ball |09 is normally held seated thereagainst b y a compression coil spring H0. 'Ille/arrangemnt is such that when the plunger fisflrced t0 the right in Figs. 1 and 3, Valve ballumwis driven against its seat by the force of liquid passing the reduced opening |01a in retainer |01 and valve ball |09 is raised from its seat against spring I l0, permitting liquid under pressure to pass from the cavity 15 to the left end of cylinder d5, thereby advancing the piston 41 to the right, and when the plunger 82 is moved to the left in Figs. l and 3, valve ball |09 is seated automatically by the spring I0 and the reduced pressure in the cavity 15 permits valve ball |06 to open its valve whereby liquid in cylinder 45 to the right of piston '41 is drawn through passages IOI, cavity |00, and passages 99 and 99 past the valve ball |06 into the cavity 15. By repeated reciprocation of the plunger the piston 41 carrying the anvil 49 may be forced toward the 'rivet until the piston 41 engages the stop 64, or is otherwise prevented from moving.

` To provide for hand actuated return of the piston 41 and also to provide for automatically limiting advance kof the piston short of the amount limited by the stop 64, the body l0 is formed with' a Vcavity |00 extending from the right side thereof, as seen in Fig. 3, threaded as at H5 near its mouth to receive an externally threaded bushingl |6. The bushing has a shoulder engaging the outer face of the body and sealed thereagainst by a gasket H1. Bonded to the bore of the bushing H6 is an annular body ||8 of soft vulcanized oil-resisting and elastic rubber-like material having a reversed tubular portion ||9, the inner end of which is vulcanized about a plunger |20 extending therethrough, as at the ribbed portion |2| thereof. the arrangement being such that the plunger |20 is held in coaxial alignment with the bushing H6 and the body ||8 completely seals the cavity from the atmosphere while permitting limited axial movement of the plunger under stress of the rubberlike material. A lantern ring |25 is secured in the cavity |00 by having threaded engagement with the threads II5 and is sealed against a shoulder of the body |0 by a, gasket |26, and has a central bore in alignment with the plunger |20 and the valve seat |08, and provides a seat at its left end for a valve ball 21.

The valve ball |21 is normally held against its seat by the coil spring ||0 previously mentioned, which extends between the valve balls |09 and |21. A longitudinal ribbed plunger |29 is loosely arranged in the bore of the lantern ring between the plunger |20 and the ball |21 permitting passage of liquid therealong. The arrangement 1s such that when the plunger |20 is forced to l the left of Fig. l, it completes a metal to metal piston 41 to the left. Abracket |30 is secured by a stud I3I to the body I8. A lever |32 is pivoted as at |33 to the bracket |30. A stop collar |34 is adlustably secured to the tubular extension 46 of the piston 41 by a set screw |35 in a position to engage and end |36 oi' the lever |32 during outward movement of the piston. The opposite end of the lever |32 is bifurcated to straddle a reduced portion |31 'of th'e plunger I 20 and has a cam face |38 adapted to engage the plunger |20 and force it inwardly to the left to unseat the ball I 21, in the manner hereinbefoi'e described, when the anvil has advanced to the right the desii-ed distance. While the action of the stop |34 limits forward movement of the anvil toward the rivet, the unseating of 'the ball |21 is only momentary and in order to provide for a complete return of the piston a plunger handle |40 is xed to the plunger |20 permitting continued unseating of the valve I 21 by manual pressure.

For sealing the right ,end of the cylinder 45 to prevent escape of operating liquid while permitting movement of the piston, a thin tubular reversed body of rubber-like material I4I is provided with an outwardly directed flange |42 which is clamped against the outer face of the collar 62 by a. clamp ring |43 secured by screws |44. The reverse tubular portion is bound to the tubular extension 48 of the piston by a binding |45 of wire or the like. The arrangement is such' that the ilexible body I4I is looped in any axial cross section thereof permitting longitudinal motion of the piston while providing a liquid tight seal for the operating liquid for sealing the body I with liquid, and the flexibility of the body I4I permits change or its shape without change of volume of the liquid which it coniines.

A filling opening |46 is provided in the wall of the cylinder 45, and is normally closed by a plug |41 engaging against a gasket |48. The stop collar 62 is provided with side openings |50 and passages |5I to provide greater space for operating liquid and to permit free crculationthereof.

For sealing the piston 41 to the cylinder 45, a follower ring |60 of metal is loosely fitted in the cylinder and has spacing studs- I6| thereabout at spaced intervals for spacing itat all times from the closed end of the cylinder. .Between the follower ring and the piston are ring packings act as wipers.

To provide for bleedingany entrapped air from the apparatus, a bleeder vent |10 is formed in the wall of the body I0 connecting with the cylinder 46 and a threaded plug I1I having a needle point isv mounted in the body so as normally to close the vent. A passage |12 is formed in the plug to permit passage of air upon slight loosening of the plug. The stud ISI, previously described, serves to close an opening desirable for the drilling of passage 89 and is sealed against the body I0 by a gasket |15. It is formed with flats |16 for application of a wrench for driving it in place. A nut |11 engages the outer threaded end of the stud to hold a bracket |36 inplace.

The operation of the apparatus heretofore described is as follows:

6 Assuming that the parts of the apparatus are in the positions shown in Fig. 3, the operator holds the body I0 of the tool in one hand by the handle 36 and grasps the handle 42wlth the other hand withdrawing the threaded plunger 36 to the left of Fig. 1 as far as it will go and then manipulates the tool to bring the threadedend I3 of therod I2 againstA the threaded bore of the rivet which is usually held in an aperture in the work against rotation by a key thereon. The operator then forces the handle 42 and plunger 36 to .the right, thereby rotating the rod I2 and entering it in the rivet until the flange 56 of the rivet impinges against the anvil face 55 of anvil 46. At this time, the parts are in the position shown in Fig. 3. The

loperator then oscillates the handle 8 8 causing the plunger 82 to reciprocate. Oil or other operating liquid in the right end of cylinder 45 is drawn by action of the plunger through the passages IOI, |00, 60 and 68, past the valveball I06-into the cavity 15 at each outward movement of the plunger 82 and, upon each inward movement of the plunger, the valve |06 closes and the liquid is forced from the cavity 15 through the passagef95 past the ball valve |06 and by way of the passage' 61 to the left end of the cylinder 45 where it increases the pressure upon the left side of the pis--l ton 41 forcing the piston and with it the anvil 4'9 to the right against the flange 56 of the rivet. Assuming that the work is immovable, such movement of the anvil forces the tool to the left of Fig. 1 with respect to the anvil thereby drawing the rod I2 toward the anvil for upsetting the rivet. Upon upsetting of the rivet to the desired degree, the lever |32 engages the stop |34 thereby forcing the plunger I2I to the left of Fig. 1 lifting the ball |21 from its seat and equalizing the pressure at opposite sides of the cylinder. The rod I2 may then be withdrawn from the upset rivet by pulling the handle 42 to the left of Fig. 1 thereby rotating the rod I2 in a counter clock-wise direction and releasing the rivet. The piston 41 may then be returned by pressing' the plunger handle |40 to the left thereby lifting the ball valve |21 from its seat for a sucient time to permit the spring 65 to return the piston.

If desired, provision may be made for power operation of the mechanism hereinbefore described. To this end, referring to the embodiment of the invention shown in Figs. 5 and 6 of the drawings, the body I0 and the working partsI therein contained are the same asin the embodiment ilrst described. Means are provided for rotating the rod I2 and for reciprocating the pump plunger 82 pneumatically. For this purpose, the hand operated 'shaft 2| of Fig. 3 is replaced by a power driven shaft 200 arranged in alignment with rod I2 with its end axially spaced from coupling member I6. Shaft 200 is the shaft of a rotary reversible air motor 20| mounted in a housing 202. Housing 202 is secured to a threaded coupling member 203 which engages over the tubular extension 26 ofthe body I0. A gear speed reduction unit is also contained in the housing 202 and is of the planetary type. 'It has an outer sleeve member 204 iixed within housing 202 and having internal ringgear teeth 205. A hollow gear carrier 206 is mounted in ball bearing 201, 208, retained by sleeve 204 and coupling member 203 for rotation about shaft 200, and is secured by coupling member I6*3L to rod I2. Carrier 206 has a shaft 209 secured thereto parallel to its axis ofv rotation. A planet gear 2 I0 is rotatably mounted on shaftA 209 and its teeth engage pinion teeth 2|I formed on the motor shaft` 200. A smaller in the handle. The valves are connected by a passage 2I3 through the handle to the air connection 2| 6. Each valve has a seat 228 against which a ba1l`22| is held by a spring 222. A

l plunger 223 is adapted to be actuated by a lever 224 to depress the ball from its seat. The arrangement is such that by depressing one lever` 224 air is. admitted to turn the air motor in one direction and by depressing the other lever a simy l ilar valve is opened to rotate the motor shaft in Q the opposite direction.

For operating'the pump plunger 82, a cylinder i block238 is mounted on the stuffing box 8l'L and is formed with a cylinder 23| and a valve chaml l ber 232 on axes parallel to each other. An inwardly directed flange 233 at one end of the cy1 inder engages back of the ,enlarged head of the l stuffing box, and is held thereto by a nut 234 threaded on the stufllng' box, packings 235, 236

being provided to seal the joint. A threaded cylinder head 231 closes the opposite end of the cylj inder. A piston rod 238 is slideably mounted in Y the cylinder head, a stuing gland 239 being provided to seal the joint. Fixed to the piston rod is a piston. 248. Pump plunger 82 is secured loosely to the piston rod 238, as by having a head 82; thereon engaged in a cross-slot 238 permitting g slight relative lateral movement and restricting l relative axial movement to accommodate any misl alignment. Ports 24|, 242 from opposite ends of the cylinder connect it with the valve chamber 232 in which a valve 245 is slideablymounted. The valve is in the form of a tubular rod adapted tol extend into the handle 2| 5 where it connects with an air supply passage 246. A stuffing box 241 is l fitted about the valve where it enters the handle.

The valve has annular spool portions dening annulargrooves 258, 25|, 252 therebetween. A hole 253 through the wall of the valve at groove 25| connects the chamber 232 with the bore of the valve and consequently with the passage 246. i Exhaust. ports 254, 255, extend from chamber 232 port 24|, groove 258 and port 254 with the atmosphere. With valve 245 moved to the left from l the position of Fig. 5, the right end of cylinder l 23| will be connected by port 242 by way of groove 1 252 and port 255 withl the atmosphere, while the Q l left vend of cylinder 23| will be connected by port l 24| groove 25| and opening 253 with the bore of the valve 245 and therefore with passage 246. A

valve ball 268 is seated against a seat 26| in air l passage 246 and .is adapted to be displaced by a plunger. 262 acting against a coil spring 263. A

hand lever 264 pivoted on the handle is adapted to move the plunger to unseat the valve.v The arrangement is such that when lever 264 is depressed, compressed air from passage 2I9 may pass the valve ball 268 to act upon the piston 248.

The end of valve 245 extending into handle 2 I 5 Q 8 actsasa piston to urge the valve to the rightin mg. 5. Anl'm lisxdfplstnrod 23. 'and A its free end is positioned .between adjustablefstop collars 21|, 212 on valve -245. The arrangement is such that when valve 268 is opened and piston 248 moved to the left, in Fig. 5 due to air pressure thereon, arm 2 18 eventually engages stop 21| and, due to the superior area of piston 248 over that of valve 245, thel valve is moved to the left until the air supply is connected to the left end Eor the cylinder and the right end of the cylinder l is connected to exhaust port 256. This causes the piston to move to the left end of the cylinder and the reciprocatory movement is repeated as long as the valve 268 is held open.

The operation of the apparatus is the same as that for the embodiment of Fig. 3 except that when the rod I2 is to be rotated one valve lever adapted to t over the tubular extension 26 and l 224 is pressed down to admit compressed air through valve 2I1 to motor 28| to rotate the rod in one direction and when the rod is to be operated in the 'opposite direction the other valve lever is depressed to open valve 2I8 and rotate the motor 28| in the opposite direction. Also when a rivet is to be upset valve lever 264 is depressed to open valve 268 and thereby cause pump plunger 82 to reciprocate until the rivet is upset as previously described.

Referring to the embodiment of the invention shown in Fig. '7, the body I8 and all parts therein contained are the same as in the embodiment of Figs. 1 to 4 except for the stuillng box 8Ib,which is externally threaded throughout its length. A transmission housing 388 is secured to housing I8 .by having an opening 38| in a side thereof to be held in place thereon by a pair of nuts 382, 383, and also by a second opening 384 in the same side adapted to t over stuffing box 8|b and to be held thereon by a nut 385.

For rotating the rod I2, a shaft 388 is molmted for rotation in the housing 388, as by a bearing 381, and is secured to the rod I2 by the coupling member I6 through which the rod |2 is threaded, the rod I2 also having threaded engagement with the shaft 386. A motor shaft 388 is rotatably mounted ln housing son, parallel to shaft aus.' At

one end of shaft 386 a pair of gears 389, 3I8 are fixed to each other and to a female cone clutch member 3| I, all of which are freely rotatable as a unit about the shaft. At the opposite end of the shaft, a gear 3I2 is freely rotatable about the shaft, and a gear 3 I3 integral with a female cone clutch member 3| 3a is independently rotatable about shaft 386. A pinion 3I4, integral with a gear 3I5 is in mesh with gear 3I2 and is mounted for free rotation about a stub shaft 3I6 fixed to housing 388. Gear 3I5 is in alignment with gear 3|3 but their teeth clear each other. An idler gear 3 I8 is rotatably mounted on a stub shaft 328 and meshes with gears 3I3 and 3|5 so as to turn gear 3I3 in the opposite direction to gear 3| 2. A

double-ended cone clutch member 32| is slideably mounted on shaft 386 between clutch .members 3II and 3I3a and is held against rotation with relation to the shaft by a feather-key 322. The arrangement is such that clutch member 32| may be moved into frictional engagement with either clutch member by operation of a shifter lever 323 engaging a shifter fork 324 engaging a groove in clutch member 32 I.

Motor shaft 388 is formed with gear teeth 325 to mesh with gear 3I2, and with gear teeth 326 to mesh with gear 383. An electric motor 321 I 9 drives shaft 303. The arrangement is such that with clutch member 32| engaging clutch member 3H, shaft 30| andwithitrod I2 are drivenina direction to screw rod l2 into a rivet, and with 10 from the scope of the invention as it is defined by the following claims. I claim: ,v Y 1. Apparatus for installing a tubular internallyclutch member 32! engaging clutch member 3I3a, 5 threaded rivet, said apparatus comprising a rod shaftuiandwithitrod |2varerotatedinthe opposite directionto screw rod I2 out of the rivet. At the neutral position of clutch member 32|', shaft 305 is not rotated by shaft 303.

For causing the same motor 321 to reciprocate 10 theballbearingnpositionforthegeartomesh with gear III. A bearing 333.is also formed in housing 330 in alignment with bearing 330. A shaft 334 has a reduced portion 335 rotatably mounted in bearing 333, the large end ofthe having a threaded portion for engaging the. threaded interior of the rivet, a hollow anvil through which said rod extends, means for rotating said rod to engage and disengage its threaded portion from the rivet, a body supporting said rod and said anvil, and hydraulic means entirely enclosed by said body for providing relative axial movement of said rod and said anvil for upsetting said rivet. I l

2. Apparatus for installing a tubular internallytheaded rivet, said apparatus comprising a threaded rod for engaging the threaded interior of the rivet, means for rotating said rod to engage and disengage it from the rivet, an anvil shaft being journaled within gear 332. A female; through which said rod extends, 'a housing for cone clutch member 336 is formed integral with gear 332. A cooperating mail clutch member 331 is slideably mounted on shaft 334 and is held against relative rotation therewith by a featherkey 338. A shifter lever 333 is arranged to engage a shifter fork 340 journaled in a groove in the clutch member 331 for shifting the cone` into engagement with gear 332 to drive shaft 334. Shaft 334 is formed with a bore 345 to slideably receive the head 346 of pump plunger 82. 'I'he 30 shaft is also formed with a continuous cam groove 341 extending outwardly from the bore 345. A cam roller 348 is slideably mounted in the groove and is rotatable about a pin 349 xed tc the head 346. The groove is of sine curve type providing reciprocation of the plunger 32 upon rotation of 4 shaft 334. Thel arrangement is such that with clutch member 32| in the neutral position and clutch member 331 engaged, rotation of motor 321 causes rotation of shaft 303 and gears 309,

3|0 and 332. Gear 332 through clutch members 338 and 331 rotates shaft 334 which'causes reciprocating movement of plunger 32.

Clutch lever 323 is fixed to a shaft 350 and clutch lever 339 is xed to a shaft 35|. shafts extend through bearings in the wall of housing 300 and are fixed to levers 352, 353, re' spectively for hand operation.

The operation of the apparatus of Fig. '7, is the said rod, means' for imparting relative axial movement to said rod and anvil, said means comprising a liquid-pressure operated member in saidthreads of the rivet, a hollow anvil through which said rod extends, means for rotating said rod to engage and disengage its threaded portion from the rivet, a body for supporting said rod and said anvil, and hydraulic means within said body comprising a reservoir, an operating cylinder, a piston therein for imparting relative axial movement between said anvil on the one hand and said rod and said body on the other, and hydraulic pump means for actuating said piston.

4. Apparatus for installing a tubular internally-threaded rivet, said apparatus comprising a rod having a threaded portion for engaging the threads of the rivet, a hollow anvil through which said rod extends, reciprocating means These comprising threaded plunger means for rotating said rod to engage and disengage its threaded portion from a rivet, yand hydraulic pressure means for effecting relative'axial movement of said rod and said anvil to upset said rivet, said same as that of Figs. 1 to 3 except that when rod 50 hydraulic pressure means being entirely enclosed l2 is to rotated in a direction to enter the rivet, shifter lever 353 being in the unclutched position as seen in Fig. 'I to dsengage the cam clutch members 335, 331, lever 352 is moved to the right by a housing supporting said rod and said anvil.

5. Apparatus for installing a tubular interi nally-threaded rivet, said apparatus comprising an apertured anvil for applying a force to a rivet,

in Fig. 7 to engage clutch member 32| with clutch 55 8- threaded 10d eXbendng through Said anvil t0 member 3| l, which is in mesh with continuously rotating shaft 308, thereby rotating the shaft 306, and with it the rod i2, in a clockwise direction as seen from the left of Fig. '7. The shifter lever 362 is then moved to the neutral position shown in the drawing.

When the rivet is to be collapsed, the shifter ,lever 353 is moved to the left of its Fig. '1 position,

thus engaging clutch member 336, 331 to permit gear 332, which is under continuous rotation lever 352 is than moved to the left of Fig. '1 70 rotating Said IOd t0 engage and disengage it in v departing 'l5 engage the threaded bore of the rivet, means for rotating said rod to engage and disengage it in the bore of the rivet, a body for supporting said rod and said anvil, liquid-pressure operated means entirely enclosed by said body for actuating sad rod and said anvil relative to each other for upsetting a. rivet, and means for determinately controlling the amount of such relative movement.

6. Apparatus for installing a tubular internally-threaded rivet, said apparatus comprising an apertured anvil for applying a force to a rivet,

' ,a threadedrod extending through said anvil to engage the threaded bore of the rivet, means for the bore of the rivet, a body for supporting said rod and said said body enclosing a liquid supply and means to develop pressm'e on said liquid for actuating said rod and said anvil relative to each other for upsetting a rivet, means forsealingsaidbody uid,andmeansfordeterminately amountoirelativemovementofnidrodand sardanvll.

llr

v. Apparatus :or installing' aumular merj nally-threaded rivet, said apparatus comprising ,arodhavingathreadedporlionicrengagingthe threads of the rivet, a hollow anvil through threaded engagement with said rod to engage anvil, and hydraulic means entirely enclosed by saidbodyiormolvingsaidanvilaxill1lywii.llrev specttosaidrodandsaidbodyfor'upsettingsaid l rivet.

9. In an apparatus for installing an internallythreaded tubular rivet and having a threaded againstcstallootsuldliu-` euntrolllngtlre` sala rod' having a cylinder anda marmi'tubular portion therewithin providing abearing iolsaid rod, means for imparting relative axial movementto said rod and said anvil, said means comand disengage its threaded portion'from the i1'lvet,abodyiforsupportingsaidrodandsaid` rodfor engaging the threaded interior of the` rivet, a hollow anvil through which said-rod e'xoperated cylinder for axially moving said anvil with relationtosaid rod, means for confining a liquid between said anvil and said cylinder, said means comprising a tubular body oi.' rubber-like material reversed l i upon itself and having a portion for sealing it j to said cylinder and a portion for sealing it to said anvil.

tends, and a hydraulic pressure 10. In an apparatus for installing a tubular rivet and having a threaded'rod for engaging inthe threaded bore of the rivet, ahollow anvil about said rod, a hydraulic cylinder, apiston 1 therein for axially moving said anvil with rela- 1 tion to said rod, a hydraulic pump for actuating said piston and valve meansvfor controlling iiow y of liquid between said cylinder and said pump, w valve throttling means engageable with said valve means to limit movement of said piston,

and stop means on said anvil for engaging said 1throttlingmeanstolimitrivetupsettingmove` ment.

prlsing a liquid pressure operated piston in said cylinder, and means in said housing for pump# ing liquid from one side oi said piston to the other. l

12. Apparatus for installing a tubular internally-,threaded rivet, said apparatus comprising 'Y a rod having athreaded portion for engaging the threaded interior of the rivet, a hollow anvil through which said rod extends., means' for rctating said rod to engage and disengage its threaded portion from the rivet, a body supporting said rod and said anvil, and hydraulic means entirely enclosed by said body for providing reiative axial movement of said rod and said anvil for said rivet, and power-operated means on said body for developing hydraulic pressure in said hydraulic means.

13. Apparatus for installing a. tubular internally-threaded rivet, said apparatus Acomprising a rod having a threaded portion for engaging the threaded interior of the rivet, a hollow anvil through which said rod extends, power-operated means for rotating said rod to engage and disengage its threaded portion from the rivet, a body supporting said rod and said anvil, and hydraulic means entirely enclosed by said body for providing relative axial movement of said iod and said anvil for upsetting the rivet.

14. Apparatus for installing a. tubular inter- Y nally-threaded rivet, said apparatus comprising 11. Apparatus for installing a emular mierp holly-threaded rivet, said apparatus comprising 1 a threaded rod for engaging the threaded interior of the rivet, means for rotating said rod to engage and disengage it fromthe rivet, an anvil throughwhicll saidrodextends,allousingfor` a rod having a threaded portion for engaging the threaded interior oi the rivet, a hollow anvil through which said rod extends, power-operated means for rotating said rod to engage and disengage its threaded portion from the rivet, a body supporting said rod and said anvil, and hydraulic means entirely enclosed by said body for providing relative axial movement of said 4rod and said anvil for upsetting the rivet, said poweroperated means being mounted on said body and comprising means for actuating said hydraulic means.

15. Apparatus for installing a tubular internally threaded rivet, said apparatus comprisingl a rod having a threaded portion for engagingthe threaded interior of the rivet, a hollow anvil through which said rod extends, motor means for rotating said rod to engage and disengage its threaded portion from'the rivet, a body support-l ing said rod and said anvil, hydraulic means infcluding a pump entirely enclosed by said body, and means for selectively connecting said motor Y meansto saidv rod and said pump.

- lRUSSELL. s. 06mm.

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