US2416474A - Rivet ejector and gun - Google Patents

Description

Feb. 25, 1947. I L. FRANK RIVET EJECTOR AND GUN Filed Sept. 13, 1943 '2 Sheets-Sheet 1 Feb.'25, 1947. FRANK RIVET EJECTOR AND GUN Filed Sept. 1:5, 1943 2 Sheets-Sheet 2 I INVENTOR. v L U/ f /eflA K I Patented Feb. 25, 1947 Application September 13, 1943; Serial No. 5.021122 is {ll-aims. (01. 7-8-46) X My invention relates to a tool for ejecting rivets, one at a time from a magazinainser'ting said rivets in their" holes in the workand then driving and setting said rivets andthe' principal object of my invention, is to provide a simple,.1

practical and e ily operated'tool comprising' in combination, azfonventional pneumatic riveting gun 'or hammer and manually operable means for feedinga' string of connected rivets forwardly from a 'h'older or magazine so'as toejectithe forward'one of the'rivets 'irom'said holder and insert the ejected rivet in its hole, thensever the ejected and inserted rivet and finally imparting hamner-like'blcws to the head ofthe inserted rivet so as to setand rivetasameinthe work; I v

Further objects of myinv'ention are, to pro videi a rivet ejecting and driving 1:001 01 the character referred to, which will"materia11'y' lessen th tine and labor ordinarily involve'din' "the in rtng and settingofrlvets and toprovide the too) with a'number of readily manipulated 'ad jum'ments in order that "the tool "will handle rifets having difierent sized heads or shanks o'f d'fierent lengths and also 'eject' and insert th'e L a was in holes spaced difierent distances apart.

A'further object of myinvention is to provide simple and effective means for guiding xthe "tool during its operatiomandgauging the positions -theeiector and' hammer in relation tothe p g 'of the rivet holes. v

' 'With' the foregoing andother-objects in view,

my invention consists in certain novel features of construction and arrangement of'parts which will be hereinafter more fu'lly described-and claimed and illustrated "in the accompanying drawing in which: I

Fig; 1 is a side elevational view 'of'the tool with parts broken awayand insection.

Fig.2 is a topplan view of my improv'ed rivet ejector and gun.

Fig. 3 is a front end elevational view of'the' tool." i Fig. 4 is; a-detail section tak'en'on the linet-l of'Fig52. r

I Fig. 5 is a horizontal section takenon thedine' A magazine.

2 v w .Fig; is a'perspectivewi'ew of certainicoopere ating-parts' of the rivet shearing'mechanism.

Fig; 11 is aiperspective 'view'of a mo'difiedtform of the rivet feeding pawl.

Fig; 12 is anselevational View "of a "carriage release.

Fig. 13 is.a rvertical section taken on the line l3+-|-3'of"Fi'g;i12. I

Referring by numeralsif'to the accompanying drawings; lo'd'esignates the-:ma'in body of "the combinedejector :an'dgun, the same having the customary handle and air connectionsisee Fig.

-' 1) and at itsforwarcl end, a removable rivetset strings such as R. is removablypositioned'in -a longitudinal bore 11 0' 'inicarriage I 6;

Magazines such as IZimay "be interchangeable SOaSTtO accommodatedifierentisizedrivets:

Carriage "lfiiis connected b'y straps to body l0. in "a? vertically adjustable relation by 'means' of slot l8"in.'the straps with-screwspassing-through said slotsand graduation's regulating such. adjust-.

ment. Screws 22 .havingsright and left hand .threadszand being threaded to body 10' andssec-i tion: I 4, .c as .inzEig; 1 areprovided with a wrench "engageable .Illit portion? 23 to iJiaciIitate vertical adjustment between *iao'dy 40 and section M.

The istraps l 1 are fixed: to intermediate section 14 and haveiatt'heir."freeiendsxlugs 2!) adapted to engagesguide groovesfl :of carriage I6.

As in Fig: .5 the :carriage -l6 is 'provide'dwith a groove "'24 'serving'as 'a guide for ai'sliding strap 25;"the same :having fan" intu'rned lug 26 1 adapted to'zengage :an eXDflIlSlOIl-E'Slbfillg Tit which engages a flxediportion' of *the :carriage'. I 6. Strap 25 also holder :and said "pawl 1 .28 urged forward by-ta spring; 29 mounted: in amusing 3ll 'icarried by strap 25. 9

The rear end. of strap has an 2 outwardly turnedJlug'3-I, (seeEig: .1) adaptedto be engaged by the upperiend'of a'ilever '32, the lower .end of thelatter being pivotedeon the side of body I 19.

'A'shortilink 33zlpivotally connects the upper sends of lever '32 and: trigger 31'; JTiigger '34 comprises a lowerfifinger piece 135. li'ey'edto pin 36. and an upper-portion 3],keyed'toathe same pin-236:

. Theciorward end-:01 carriage l6 has 2 an'rintee in block 38 and are held against turning by set screws 45.

Pins 46 extend through the bolts 43 and 44 into the spiral slots .1 of cams 48 and 49 rotativelv mounted upon; bolts 4 3 and 44. The block 38 is provided with a guide" groove 50to receiveas seen in Figs. 7 and 5, a pair of shear strips 51,

having cutting edges 52, guide flanges 53 and inturned lugs 54 adapted to engage flanges 55 of the cams 48 and 49. v

The earns 48 and 49 are provided pivotally connect to links 51, which in turn'are pivoted to arms 58 which arerotatively-journalled on top of carriage l6 (see Fig. 2 The arm's 58 are provided with arcuate anvils 59 adapted to be engaged by pusher'arms 60 actuated by trigger 34 through the medium of links 6| the-ends of the latter being pivotally. connected to the intermediate portions of said links 69 and trigger 31 (see Figs. 1 and 2). V. I

As shown in Fig. 1', I have provided means-for locating the rivet set ll of the gun body l9. relative to the rivets previously inserted by the use of a flanged roller 63 normally urged forward by spring 64, carried inhousing 65 on gun body.

I9 and limited bvnuts' 66 .on bolt 82.

A :further guide provided to help locatet e device in relation to the rivet heads and holes, is adapted to engage the free edge of the metal plate P. This guide comprises a bracket 6! adjustably secured, as at 68 to the section l4, and having a housing 69, to receive a slide bolt 10 normally urged forward by spring H, and limitedby nuts 12 (see Fig. 4). :4

The slide bolt at its outer end is provided with afoot portion having a centrally .locatedbore to receive a spring 13 and a ball 14 adapted to be pressed forward by the springsai'd ball being heldin place by peening V The 'foot'portion of slide bolt 19 has a flange I .15 (see Fig. 2) to guide thegun relative to the edge of the metal P. In the use of .my comb ned rivet gun and ejector, the rivet magazine I2, is provided with a rivet string Rand inserted into rivets of the string in the rivet hole and with the blades 5| about to sever said'rivet. 1 The first movementof. trigger 35, moves strap 25 forwardly, independent of'carriage l5. and as this initial movement takes place, pawl 28 feeds the rivetstring forwardly the distance of one rivet andpawl 16 engaging behind the head of H the rivet engaged by pawl 28,'holds the rivet.

'1 string against rearward movement when the carhole and the tool is now elevated tobring rivet set llinto position to-h'ammer said rivetci- Rivet set ll projects forwardly from the too a, distance approximatelyequal to the forward "by stop'screwiilil carried by carriage I6.

. 4 H travel of carriage l6 and thus it is necessary to first move the rivet forward out of the carriage before the latteris moved forward to insert the rivet in its hole.

As shown in Fig. 5 actuationof the trigger 34 when pulled will push forward with the strap 25 and carriage l6, causing the pawl to engage one of the rivets and move the string of rivets forward, whereby the foremost rivet is guided into the rivet holes ofthe metal. plates, and the.

rivets being prevented'from retracting by pawl 16. Pawl 1B is pressed forward by spring 1'! carried by housing 18 of adjustable strap 1930f the The forward motion of strap 25 is limited The next step in the operation is to' shear off the rivet now positioned in the rivet holes of the metal plates. T01 this end; the trigger 34 is further actuated causing pusher arms 69 to engage anvils 59,-androck the arms'58'which in turn, actuate links 51. 7

The links 5?, being pivotally connected to cams 48 and 49, will cause the same to rock uponthe bolts 43 and 44, and through the action of the pins 46 in spiral slots 41 of the earns, the shear strips will move inward to cut off the rivet poe sitioned in the holes, from the rivet string-Rh The carriage [8 will then be retracted by spring 82 (see' Fig. 2), said spri g ein connected? one of the links section I 4. a

The gun is next raised to apoint where the rivet set II engages the head of the rivet cut off and the gun is then used in the conventional manner to head the rivet. As shown in Figs-g1 adjustment of; screws'22, .permits the poiitioning of the ejector and therivet set and guide wh ls 63, the same distance apart asv the center-of th rivet holesin-the metal. plates.

Figs. 12 and 13 show means to prevent the arriag'e 'lemoving forward until the trigger'wis actuated. Upon actuation of trigger 34 a p t 85, adjustably carried by part3! (see Fig.1) vill force down a T shaped pin 86 retracting ti upper end of same from a bore in the carriag l6 to-release the said carriage; A- spring; 8\ normally holds the pin 86in locked positionun As seen in Fig. l1,-.I- provide a modified -form of feed pawl 28, comprising avflat piece of :spring metal carried by a rod 30f connected to strap "2 5:. I In' some instances'it maybe found desirable to eliminateintermediate memberor rail 14, and

mount carriage I6 directly on body I9, in which event rivet setssuch as ll but with a greater degree of offset would be used. 1; 1

In Fig. 5 at the left hand end-of the rivetist ng I have shown the rear rivet of the string in the magazine provided. with an axial recess-,Bj for the reception of a pin R 'on the forward end of the forward rivet of another string, thus pro-.

viding for:;a conti-nuous feed of rivets in string 3 This same arg form to pass through the tool. rangement is shown and describedinmy copending application of patent on Rivet strings filed Feb. 22, 1943-, Sen-No. 476,742. a 7

Thus it will be seen that I have ,provideda rivet ejector and gun which is simple in structure, inexpensive of manufactureand very ;ef+

the functions for which; it

51 and to strip 83 fixed .to the '7 and described without departing from the spirit feeding the string of rivets forwardly through said magazine.

2. The combination as set forth in claim 1 and with means for severing the forward one of the rivets from said string.

3. The combination as set forth in claim 1 and with means for guiding the travel of the tool on the work.

4. The combination as set forth in claim 1 and with adjustable means for gauging the movements of the tool with respect to the rivet hole spacing in the work.

5. The combination as set forth in claim 1 with a grooved roller yieldingly mounted on the forward end of said hammer and a rivet set detachably mounted on the forward end of said hammer.

6. The combination as set forth in claim 1 and with adjustable rivet hole engaging means mounted on the forward portion of said rail.

7. The combination as set forth in claim 1 and I with means mounted on the forward end of said carriage and actuated by said manually operable means for severing the forward one of the rivets after the string has been fed forwardly the distance of one rivet through said magazine.

8. The combination as set forthin claim 1 and with means fixed on said rail and having sliding engagement with said carriage for securing said rail to said hammer in differently adjusted positions.

9. The combination with a pneumatic riveting hammer, and its manually operable controlling means, of a rail mounted for vertical adjustment on top of said hammer, a carriage mounted for longitudinal sliding movement'on said rail, a rivet string magazine removably positioned in said carriage, rivet severing means mounted for operation at the forward end of said carriage and manually operable means for feeding a rivet string forwardly through said magazine, then shifting .said carriage forwardly and then actuating said rivet severing means.

10. The combination as set forth in claim 9 and with means carried by said hammer for guiding the travel thereof on the work.

11. The combination as set forth in claim .9 and with adjustable means mounted on the forward portion of said rail for gauging the movements of i of rivets forwardly from said magazine and for severing the forward one of the rivets from said string,

13. The combination as set forth in claim 12 with means for actuating said rivet severing means and means for imparting rotary pressure to said riveting severing means.

LOUIS FRANK.

REFERENCES CITED The following references are of record in the file of this patent: 1

UNITED STATES PATENTS Number Name Date 2,330,052 Henry et a1. Sept. 21, 1943 2,335,670 Harvey Nov. 30, 1943 739,811 Baldinweg Sept. 29, 1903 1,352,851

Trumbull Sept. 10, 1920

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