US2335670A - Rivet feeding device - Google Patents

Description

NOV. 30, 1943. HARVEY 2,335,670

RIVET FEEDING DEVICE Filed Mafch 17, 1942 2 Sheets-Sheet 1 /02 20 1/ 1/ I //a /0/ @2 15 9 6 I 11 3;, 3A 1;] Y1

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RIVET FEEDING DEVICE Filed March 17, 1942 2 Sheets-Sheet 2 UUUU- INVENTOR A T NEYS hole, ejector means being Patented Nov. 30, 1943 2,335,670 arvE'r FEEDING DEVICE Frank M. Harvey, Buflalo,

and Engineering Company,

N. Y., assignor to Gen- Buflalo, N. Y., a

copartnership composed of Wilbur Johndrew, Buffalo, N. Y., and Thomas H. Speller, Williamsville, Y.

Applicatlon'March 17, 1942, Serial No. 435,069

36 Claims. The principal object of my invention has been to provide a device by which a plurality of rivets may be fed one at a time to the discharge position ready to be manually guided to the place of use. Another object has been to provide a feeding device having means for yieldably holding the foremost rivet at the discharge end or the device ready for insertion into a rivet'hole.

Moreover, my device is provided with detent means for yieldably holding all rivets intheir advanced positions during their passage through the device, permitting the operator touse the device in any desired position.

Another object has been to provide a device which may be used in connection with a pneumatic hammer or a bucking-up tool, whereby when the rivet is inserted in the rivet hole, it

may be readily released from the device and the.

' hammer or tool be conveniently brought into position of use.

Another object has been to provide a rivet feeding device operated by fluid pressure so that when used with a pneumatic riveting hammer, but one source of fluid under pressure need be provided.

Furthermore, my device is provided with a discharge portion, so arranged with respect to the base that each rivet when ready to be discharged has been moved to an angular position where it may be more conveniently registered with the rivet provided for moving each rivet from the feeding device to the end of the discharge portion.

The above objects and advantages have been accomplished by the device shown in the accompanying drawings of which:

Fig. 1 is a top plan viewof my device;

Fig. 2 is a longitudinal, sectional elevation thereof taken on line II-II of Fig. 1; z

Fig. 3 is a bottom plan view with a portion of the casing broken away;

Fig. 4 is a transverse sectional elevation taken on line IV-IV in F18. 1;

Fig. 5 is a similar view taken on line V-V of Fig. 6 is a similar view takencn line VI-VI of F18. 1;

Figs. '7, 8 and 9 are fragmentary plan views showing three steps in the movement of the feed bar;

Fig. 10 shows my riveting hammer;

Fig. 11 is a fragmentary sectional view taken on line Il--H of Fig. 4, and;

Fig. 12 is a modified form of ejector. My device comprises a device attached to a pneumatic a The base i5 is charge porti'on'lS at its forward end. This discharge portion is preferably curved and extends tangentially from, the base to guide the rivet to the point of discharge, as hereinafter more fully described. The base is formed in its face with a centrally arranged longitudinal groove II for the reception of the heads 18 of the rivets IS. A registering groove 83 is also formed in the discharge portion I6 of the device. Retaining plates 20 carried by the base are arranged one at each side of the groove ll. These plates overlap the groove so as to retain the rivet heads l8 therein and to provide a slot 2| between them for thepassage of the bodies 22 of the rivets.

formed at one side of the groove l'l thereof with a longitudinal recess 23. recess extends entirely through the base i! and a feed slide 24 is slidably mounted therein for limited longitudinal movement.

My device is provided with an actuator plate 25, which is slidably disposed'upon the bottom surface of the base and is held in place by oppositely arranged cover plates 26. Each of these cover plates is preferably secured to the side edges of the base and each is formed with an inturned leg 30 which extends over the top edge portion of the actuator plate, thereby forming, with the base, suitable ways for guiding this plate as it is reciprocated. The feed slide is provided with a propeller pin' 32 which is disposed within a slot 3| formed in the actuator plate. This slot permits a limited movement of the actuator plate relatively to the slide until either end of th slot reaches the pin, whereby further movement of the plate will move the slide along with it. The actuator plate may be reciprocated back and forth either manually or by power means, but I prefer to use a pneumatic operating cylinder 33. The cylinder is provided with the usual piston (not shown) to which a piston rod 34 is attached. The piston rod is pivotally connected to upstandingarms 35 carried by the actuator plate. A retracting spring (not shown) is preferably provided within the operating cylinder for retracting the piston when the fluid pressure in the cylinderisreleased.

The feed slide is provided with two groups of detent recesses .36, arranged preferably at each end thereof and engageable in either extreme position -'of the slide with detent balls 40 carried by the base i5 and pressed outwardly into engagement with these recesses by means of helical springs 4|. The springs 41 are kept under tension by means of set screws 42 screw-threaded base I! having a dis- 66 into the spring recesses and adjustable'to' vary the tension upon the springs. Because of the provision of the detent balls and of the detent recesses, the feed slide will be frictionally held, for instance, in the position shown in Fig. 2 while the actuator plate is moved forwardly and until the end of the slot 3| has reached the propeller pin 32, at which time further movement of the actuator plate will carry the feed slide along with it to the end of its recess 23, as hereinbefore described.

Feed bar cylinders 43 are carried by the feed bar, one at each end thereof. These cylinders extend through the bar and have their ends exposed at the opposite surfaces thereof. An actuating lever 44 is provided at that end of each of the cylinders which terminates in the surface adjacent the actuator plate. Each of these levers is preferably radially arranged with respect to the cylinder and extends above the end thereof. These levers extend some distance beyond the peripheries of the cylinders and each the teeth 55 will be behind the adjacent edge of the slot 2 I. It should be noted that the actuator pins 52 are set into the cylinders 43 so that in the position just above referred to they will be arranged at substantially 45 degrees to the longitudinal center line of the slot 2|. When the actuator plate 25 is now moved relatively to the feed'bar, as hereinbefore described, and the cylinders 43- rotated in'clockwise direction, the actuating pins 52 will be carried around by the rotating cylinders and moved to the positions shown in Fig. 8'in which position the teeth of the bar will be moved laterally beyond the edge of the slot 2| and in engagement with the rivets dis- [posed therein When this position is reached,

the slot 3| and engaged propeller pin 32 will cause these two parts to be moved in unison until the slide reaches the end of its stroke, as shown in Fig. 9. The length of the feed bar is so proportioned with relation to the recess 23, that the feed bar is moved longitudinally a distance equal is engaged with an actuator recess 45 formed in the actuator plate. Each of these recesses is formed as shown in Fig. 3 and is designed to operate the actuator levers and to impart a rotary movement to the cylinders when the actuator plate is moved relatively to the feed slide; As shown in Fig. 3, when the actuator plate 25 is moved to the left, the recesses 45 will engage the actuator levers 44 and through them cause the cylinders 43 to 'be rotated in counter-clockwise direction. As hereinbefore pointed out when the actuator plate has reached the end of its relative movement with the feed slide 24 'asdetermined by the propeller pin 32 and slot 3|, the actuating levers will have been moved to their extreme opposite positions. From such opposite positions, the cylinders will be rotated in clock wise direction upon reverse movement of the actuator plate before the slide starts on 'itsreturn movement.

Slidably arranged on the face of the base which is opposite the actuator plate 25 is a feed bar 50.

This bar is slidably held in place by the arms of the cover plates 26' at that side of the device. The feed bar is connected to the feed slide by means of actuating pins 52 carried by the cylinders 43. These pins extend from and beyond the ends of the cylinders adjacent the bar and are, arranged eccentrically therewith. Apertures are formed in the bar for the reception of these pins,

whereby the oscillatory motion of the pins 52 is imparted to the feed bar to move the bar laterally. Since these pins are moved with the cylinders when the slide is reciprocated, the bar will also be moved longitudinally by these pins. A suitable aperture 53, shown in Figs. 1 and 2, is formed for each of the actuator pins in the retaining plate located at that side of the device, whereby the pins will have ample clearance to impart a four-way movement to the feed bar. The edge of the feed bar adjacent the slot 2 of the device is provided with a plurality of notches handled in the device and is substantially the same or slightly in excess of the distance between the axes of the rivets when arranged side by side, as shown in Fig. 1. The width of the feed bar is such that when'in the position as shown in Figs.

1 and '7, the teeth thereof do not project beyond the edge of the slot 2| of the device.

When the actuator plate and the feed slide 24 are in the positions shown in Figs. 1 and 7, the feed bar occupies its retracted'position where to substantially a pitch between the. rivets. A reverse movement of the actuator plate will cause the cylinders to be rotated counter-clockwise and move the feedbar outwardly in lateral direction to withdraw the teeth thereof from engagement with the rivets duringwhich time the feed slide is held in its forward position by the engagement of the detent balls 40 -with the detent recesses 36. Continued reverse longitudinal movement of the actuator plate will then carry the feed slide longitudinally along with itto the end of its stroke (Fig- '7) where it will be ready to be moved outwardly and again engage the-rivets for anotherforward feeding movement as shown in Fig. 8. It is obviousthat as the feed bar is returned .to the position shown in Fig. 7, the teeth will be free of the rivets and will not move them a from the positions to which they have been advanced by theprevious stroke of the feed bar.

In order to retain the rivets in their advanced positions while the feedbar is being retracted and returned to its initial position; I provide a detentbar 54. -'I'his bar is arranged to slide'on top of'the retaining plate 20 and its inner edge is arranged opposite the working edge of the feed bar 50. This detent bar is held in sliding engagement with theretaining plate by means of the arms 5| of the cover plates 26. 'I'hedetent bar is formed in its working face with a plurality of indentations 56 separated by rounded ridges 51 spaced substantially equal to the pitch ofthe teeth 55 of the feed bar. The inner edge of this bar 54 slightly overhangs the'adjacent edge of the slot 2| and is pressed-toward the opposite side of the slot and in engagement with the rivets by means of helical springs I0 carried in suitable recesses 1| formed-inthe base l5 and engaging detent pins 12 carriedby the detent bar near each end thereof. The rivets are thus yieldably held by the detentbarinthe positions "reception of the heads thereof. The forward end of the magazine is arranged to slide into a slot 82 formed in the upper face of the base l5 and to be held therein by any suitablemeans as, for instance, by thescrews 81. shown in Fig. 10.

Obviously, the slot 8I of the magazine is in registration with the slot 2| of the base. This type ofmagazine is, however, optional and any other type may be employed with my invention.

The discharge portion II; of my device is provided for guiding the foremost rivet of the feeding mechanism to such position where it may be conveniently placed into the rivet hole prepared for it. In most cases it is desirable to have this portion so arranged that the rivetwill be moved out of the plane of the rivets in the feeding mechanism. This portion may therefore be arranged at an angle to the base or be curved as shown in the drawings.

Arrangedon each side of theslot 83 of the discharge portion is a bearing plate 84 between which is pivotally mounted the ejector 85 of my device. This ejector comprises an ejector lever .86 and'an ejector finger 98 pivoted to the outer end of said lever at ill. .The finger is preferably arranged between the bifurcated lower end of the lever and it is formed with an overhanging arm discharge end 'of the groove I] of the base when.

these parts are in the position shown in Fig. 2. .The ejector 85 is connected to the upstanding arms of the actuator plate 25 by means of an ejector link 95, the link being connected to the ejector lever 86 by means of tile pivot pin 86.

As shown in Fig. 2 the under surface of the. base I5 at the point where it joins the discharge portion is provided with a curved recess I00 for the reception of the finger 90 when the parts are in the positions shown in this figure. With the finger and lever ofthe ejector in the position shown in Fig. 2 the point of'the finger will engage with the foremost rivet as th actuator plateis moved forwardly'and will carry this rivet at accelerated rate around through the slot 83 of the discharge portion I6 into the discharge position shown by the rivet II'II. As this rivet is being carried to the position of discharge its head will be forced between the under side of the retaining plates 20 and a rivet spring I02 where each rivet will be yieldably held ready for instant removal. This spring is mounted in a' recess I03 formed in the face of the discharge portion. Two lateral arms I 04 engage with lateral slots I05 formed in the face of the bas andare also held in position by' engagement with a notch I86.

A casing H0 is provided for enclosing the working parts and it is preferably secured in place by screws passing into the side edges of the base I5. I

In Fig. 10 I show my invention attached to a pneumatichammer I I6 which receives its supply of air under pressure througha supply hose I20. As shown in this figure the operating cylinder 33 is connected to the same source of fluid supply by means of conduits .I2I and I22, a valve I23 of standard construction being interposed between these conduits for controlling the supply of air to the cylinder. This valve is of the standard push type and is so located that the operator may conveniently move his finger therefrom to the valve of the hammer. v

IniFig. 12 I show a modified form of ejector comprising an ejector lever I I I pivotally mounted upon the ejector pin 96 and movable through its path of travel by means of the ejector link 95 which has its forward end pivotally-connected thereto. The lever III is formed with a'slot II2 for the reception of the inner end of an ejector spring II3. This spring is preferably closely fitted into the slot I I2 and may be held therein by means of a pin III. The lever has a surface II5, preferably radially arranged for the support of spring II3 when moved on its feeding stroke. As shown in full lines in Fig. 12, the spring I I3 has been .moved to its feeding position where the rivet IIII will'be held in readiness for insertion in a rivet hole. When th lever is moved counter-clockwise to its initial position, the spring will be flexible as shown in dotted lines in this figure until it moves beyond the' foremost rivet held by the detent bar.

'In the form of ejector shown in Fig. 12, the rivet spring of Figs. 1 to 3 may be employed or the rivet spring III shown in this figure. This rivet spring is pivotally attached to the bearing plates 84 at one end and the outer rounded end H6 is disposed in the path of the-rivet IOI as it is being moved from the groove I! through the groove 83. The spring is retained in position against rotation by means of across bar I20.

While I have shown my device as being operated by a hydraulieopera'ting cylinder 33, it is obvious that a. handle may be attached to the actuator plate for manual operation or a solenoid may be substituted for the operating cylinder. out any type of rivet magazine may be employed, the one shown being only for illustrative purposes. Moreover, while I have shown my device 'as designed primarily for feeding rivets having countersunk heads, it isobvious that rivets having any style head may be used by simply changing the shape and size of the grooves I1 and 83. the device is preferably curved as shown and described, but it may be arranged at any angle withthe base, it being desirable only that the body carrying the rivets clear the workpiece when applying therivets. j

It is obvious that while I have shown and described my invention as applied to the feeding of rivets, my device is equally applicable to the feeding of fasteners of various types. 'These and other modifications of the details herein shown and .described may be made without departing 1 from the spirit of my invention or the scope of III Iifi

the appended claimsfand I do not, therefore,

wish to be limited to the exact embodiment herein shown and described, the form shown being merely a preferred embodiment thereof.

WhatI claim is:

1. A rivet feeding ,device, comprising avbase member formed with a longitudinal groove for slidably'holding a plurality of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their advanced positions and meansfor operating said bar to advance said rivets to discharge position, comprising a feed slide carried by said base 'for reciprocating said bar longitudinally, and means carried by said slide for'causing lateral back and forth movement of said bar in timed relation to the reciprocation of said slide Furthermore, as hereinbefore pointed- The discharge end I6 of for moving the bar into and out of feeding engagement with the rivets.

2. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their- .ivanced positions and means for operating said bar to advance said rivets to discharge position, comprising a feed slide carried by said base and movable longitudinally thereto, a feed bar cylinder oscillatably carried by said slide, means slidably carried by said base for causing the oscillation of said cylinder, means connecting said cylinder with said bar for causing lateral movement of said bar upon oscillation of said cylinder, and means for reciprocating said bar at the termination of the lateral movements thereof.

3. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means coopcrating with said bar to retain the rivets in their advanced positions and means for operating said bar to advance said rivets to discharge position, comprising a feed slide carried by said base and relatively movable longitudinally thereof, means for actuating said slide, means connecting said slide with said bar, for causing lateral movement of said her relative to said base, said last mentioned means cooperating with said slide at the ends of said lateral-imparting strokes to move said bar longitudinally.

4. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their advanced positions and means'for operating said bar to advance said rivets to discharge position, comprising a feed slide slidably mounted on said base" and connected to said bar for moving said bar longitudinally and laterally, an actuator plate slidably carried by said base and arranged adjacent said slide, means connecting said plate and said slide for imparting such lateral movement to said bar, means for longitudinally moving said slide and plate in unison at each end of such lateral movement, and means for reciprocating said plate.

5. A rivet feeding device, comprising a base' member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their advanced positions and means for operating said bar to advance said rivets to discharge position, comprising a feed slide carried by said base and relatively movable longitudinally thereto, means connecting said slide with said bar for movement longitudinally in unison, an actuator plate slidably carriedby said base and connected to the slide for moving the same longitudinally, means operable by and during the initial portion of the'sliding movement of the plate for imparting lateral movement to said bar, and means for reciprocating said plate.

6. A rivet feeding device, comprising a base member formed with a. longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said. base, means cooperating with said bar to retain the rivets in their advanced positions and means for operating said bar to advance said rivets to discharge position,

comprising an actuator plate slidably carried by said base, and means arranged between said bar and said plate for causing alternate longitudinal and lateral movements of said bar.

7. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their advanced positions an actuator plate slidably mounted on the opposite side of said base, and means carried by said base and connecting said plate and said bar for causing alternate longitudinal and lateral movements of said bar, and means for reciprocating said plate.

8. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base and engageable with said rivets to feed them through said groove, means cooperating with said bar to retain said rivets in their advanced positions an actuator plate slidably mounted on the opposite side of said base, a feed slide arranged between said plate and said bar, means carried by said slide and connecting said plate to said bar for causing alternate longitudinal and lateral move- .ments of said bar, and means for reciprocating said plate.

9. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base and engageable with said rivets to feed them through .said groove, means cooperating with said bar to retain said rivets in their advanced positions an actuator plate slidably mounted on the opposite side of said base, a feed slide arranged between said plate and said bar, a. feed bar cylinder carried by said slide and oscillated by said plate, means connecting said cylinder with said bar to move said bar laterally of the groove, and means for reciprocating said bar at, the termination of the lateral movement thereof.

10. A rivet feeding device, comprising a base member formed with alongitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base for alternate longitudinal and lateral movement and having a working face engageable with said rivets to feed them through said groove, means for operating said bar to advance said rivets to discharge positions, and laterally movable springpressed means arranged opposite the working face of said feed bar for retaining said rivets in their advanced positions.

11. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidablyholding a plurality of rivets, a feed bar slidably mounted upon said base for alternate longitudinal and lateral movement and having a working face engageable with said rivets to feed them through said groove, means for operating said bar to advance said rivets to discharge position, and a laterally movable springvpressed detent bar arranged opposite the working face of said feed bar and having a plurality of indentations in its working face.

12. A rivet feeding device, comprising a base member formed'with a longitudinalgroove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, an actuator plate slidably carried by said base, means for reciprocating said actuator plate, means carried by said base and operatively connecting said bar and said plate for imparting alternate longitudinal and lateral movements to said bar, and a laterally movable spring-pressed detent plate carried by said base and arranged opposite said feed bar.

13. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holdin a plurality of rivets, a feed bar slidably mounted upon said base and having a working face, and means for operating said bar to advance said rivets to discharge position, comprising an actuator plate slidably carried by said base, means for reciprocating said actuator plate, means operatively connecting said bar and said plate for causing alternate longitudinal and lateral movements of said bar, and a lateral movable spring-pressed detent bar arranged opposite the working face of said feed bar and having a plurality of indentations in its working face.

14. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their advanced positions and means for operating said bar to feed said rivets in step-by-step manner to discharge position comprising a feed slide carried by said base for moving said bar longitudinally, a feed bar cylinder carried by said slide, a reciprocating actuator plate slidable on said base, means connecting said plate to said cylinder to cause the oscillation thereof, means for reciprocating said plate, and means connecting said cylinder with said bar for causing lateral movement thereof.

15. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding aplurali'ty of rivets, a feed bar slidably mounted upon said base, means cooperating with said bar to retain the rivets in their advanced positions and means for operating said bar to feed said rivets in step-by-step manner to discharge position, comprising a feed slide carried by said base for moving said her longitudinally, means for frictionally holding said slide at the ends of its forward and backward movements, and means carried by said slide for causing lateral movement of said bar in timed relation to the reciprocation of said slide.

16. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base'and having a working face engageable with said rivets to feed them through said groove, means for operating said barto feed said rivets in step-by-step manner to discharge position, comprising a feed slide carried by said base and movable relatively to said bar, means cooperating with said slide for laterally moving said bar intimed relation to the reciprocation of said slide, and laterally movable spring-pressed means arranged opposite the working face of said feed bar for retaining said rivets in their advanced positions.

17. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base and having, a working face engageable with said rivets to feed them through said groove, means for operating said bar to advance said rivets to discharge position, and a detent bar arranged opposite the working face of said feed bar and laterally movable away from said bar, said detent bar being provided on its working face with means for holding said rivets in their advanced positions, and means for yieldably pressing said detent bar toward and in engagement with said rivets.

18. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a pluralityof rivets, a feed bar slidably mounted upon said base and having a working face engageable with said rivets to feed them through said groove, means for operating said bar to advance said rivets to dischargeposition, and a detent bar arranged opposite the working face of said feed bar and laterally movable away from said bar, said detent bar being provided on its working surface with shallow indentations for holding said rivets in their advanced positions, and means for yieldably pressing said detent bar toward and in engagement with said rivets.

19. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, means carried by said base for feeding said rivets through the groove thereof, said base member having a curved discharge portion extending forwardly from and beyond the feeding means, a rivet retaining spring at the end of said discharge portion, and an ejector operable by the feeding means at an accelerated rate in the direction of feed for carrying the foremost rivet from said feeding means to and in engagement with said member formed with a longitudinal groovefor slidably holding a plurality of rivets, means carried by said base for feeding said rivets through the groove thereof, said base member having a discharge portion extending forwardly from and beyond the feeding means, and an ejector for carrying the foremost rivet from the feeding means to the end of said discharge portion, said ejector comprising an ejector lever, latch means carried by said lever and engageable on its feeding stroke with the foremost rivet discharged by the feeding means, and means for operating said lever.

21. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, means carried by said base for feeding said rivets through the groove thereof, said base member having a discharge portion extending forwarcay from and beyond the feeding means, and an elector for carrying the foremost rivet from the feeding means to the end of said discharge portion, said ejector comprising an ejector lever, a springpressed ejector finger pivotally carried by said lever and engageable on its feeding stroke with the foremost rivet discharged by the feeding means, and means for operating said lever.

22. A rivet feeding device comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means for operating said feed bar in alternate longitudinal and lateral direction to advance said rivets to discharge position, said base member having a discharge portion extending forwardly from and beyond the operating means, and an ejector separate from the operating means for carrying the foremost rivet away from the remaining rivets to the end of said discharge portion.

23. A rivet feeding device comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base and engageable with said rivets to feed them to discharge position, an actuator plate slidably mounted upon the opposite side of the base, a feed slide arranged between said plate and said bar, means cooperating with said slide and connecting said plate to said bar for causing alternate longitudinal and lateral movements of said bar, means for reciprocating said plate, said base member having a discharge portion extending forwardly from and beyond the operating means, and an ejector for carrying the foremost rivet awayfrom the remaining rivets to the end of said discharge portion.

24. A rivet feeding device, comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base and engageable with said rivets to feed them through said groove, an actuator plate slidably mounted on the opposite side of said base, a feed slide-arranged between said plate and said bar, means carried by said slide and said plate for causing alternate longitudinal and lateral movements of said bar, and hydraulic means carried by said base and connected to said actuator plate for operating said plate.

25. A rivet feeding device, comprising a base member, a discharge portion at the forward end of said base member, said base member and said discharge portion each being formed in its outer working surface with a registering groove, interspaced retaining strips secured to said member and to said portion and overhanging the grooves thereof for slidably retaining a plurality of rivets in said grooves, means carried by said base for feeding said rivets through the groove thereof, a rivet retaining spring carried by said discharge portion and having bifurcated ends engaged with recesses formed in said discharge portion, said spring being formed with a cross member resiliently disposed under said retaining strips, and an ejector for carrying the foremost rivet from said feeding means to said cross member.

26. A rivet feeding device comprising a base member formed with a longitudinal groove for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means for actuating said feed bar in alternate longitudinal and lateral direction to advance said rivets to discharge position, said base member having a discharge portion extending forwardly from and beyond the actuating means, an ejector separate from the actuating means for carrying the foremost rivet away from the remaining rivets to the end of said discharge portion, hydraulic operating means carried by said base, and means connecting said operating mean to said ejector and to the means for actuating said feed bar for causing unison operation of said last mentioned means.

2'7. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means co,- operating with said bar to retain the rivets in their advanced positions, andmeans for operating said bar to advance said rivets to discharge position, comprising a feed slide carried by said base and movable longitudinally thereto, a feed bar cylinder oscillatably' carried by said slide, means connecting said cylinder with said bar for causing lateral movement of said bar upon osci1- lation of said cylinder, whereby the feed bar is moved into engagement with the rivets, and

means slidably carried by said base and operatively connected to said cylinder or causing the latter to be oscillated and then the bar to be reciprocated.

28. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means for reciprocating said feed bar, a lost-motion connection between said reciprocating means and said bar for permitting idle movement of the former with respect to the latter, and means operable during such idle movement for moving said feed bar laterally into and-out of engagement with the rivets.

29. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means for reciprocating said feed bar, a lost-motion connection'between said reciprocating means and said bar for permittlngidle movement of the former with respect to the latter, said base member having a discharge portion extending forwardly from and beyond said base, an ejector separate from the reciprocating means and operable to advance the foremost rivet through the discharge portion, and means connecting said ejector to said reciprocating means and initially operable by the latter during such idle movement to initiate the ejection of the foremost rivet away from the remaining rivets through said discharge portion.

30. A rivet feeding device comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, a feed bar slidably mounted upon said base, means for reciprocating said feed bar, a lost-motion connection between said reciprocating means and said bar for permitting idle movement of the former with respect to the latter, means operable during such idle movement for moving said feed bar laterally into and out of engagement with said rivets, said base member having a discharge portion extending forwardly from and beyond said base, an ejector separate from the reciprocating means and operable to advance the foremost rivet through the discharge portion, and meat 5 connecting said ejector to said reciprocating means and initially operable by the latter during such idle movement to initiate-the ejection of the foremost rivet away from the remaining rivets through said discharge portion.

31. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidablyholding a plurality of rivets, said guideway being formed on one side with a wall, a yieldable retaining plate constituting the opposing wall of said guideway to define means for gripping the rivets, and means movable in allernate longitudinal and lateral direction for feeding rivets step by step and thereby render said retaining means inoperative during feeding operatiom 32. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, said guideway being formed on one side with a wall, a yieldable retaining plate constituting the opposing wall of said guideway to define means for gripping the rivets, said plate having a series of seats for holding the rivets in predetermined relationship between feeding steps, and means movable in alternate longitudinal and lateral directionfor feeding rivets step by step and thereby render said retaining means inoperative during feeding operation.

33. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, means including a reciprocating member for feeding rivets step by step through said guideway, an ejector pivotally carried by said base for engaging the foremost rivet and separating it in the guideway from the remaining rivets, and motionaccelerating gearing operatively connecting said reciprocating member to said ejector for accelerating the advancing ejection of the foremost rivet relative to the feeding of the remaining rivets. I

34. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holdings. plurality of rivets, means including a reciprocating member for feeding rivets step by step through the guideway, an ejector pivotally carried by said base for engaging the foremost rivet and separating it in the guideway from the remaining rivets, and a link connecting said reciprocating member to said ejector for operation in timed relation therewith.

35. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of rivets, means carried by said base for feeding said rivets through the guideway thereof, said base member having a curved discharge portion extending forwardly from and beyond the feeding means for disposing the foremost rivet at an angle to the rivets in the guideway, and ejector means operating in timed relation with the feeding .means but at a relatively faster rate of speed to separate the foremost rivet in the guideway a distance greater than the normal spacing of the rivets in the guideway, whereby to dispose the foremost rivet individually'at anadvanced point for a subsequent riveting operation.

36. A rivet feeding device, comprising a base member formed with a longitudinal guideway for slidably holding a plurality of vrivets, reciprocating means carried bysaid base for feeding rivets step by step, and ejector means operating in timed relation with the feeding means but at a relatively faster rate of speed to separate the foremost rivet in the guideway a distance greater than the normal spacing of thejrivets in the guideway, whereby to dispose the foremost rivet individually at an advanced point for a subsequent riveting operation.

FRANK M. HARVEY.

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