US2326887A - Nailing machine - Google Patents

Description

1943. A. E. RICHARDS ETAL 2,326,887

NAILING MACHINE Original Filed'dune 13, 1941 2 Sheets-Sheet l Aug 17, 1943. A. E. RICHARDS ETTAI, 2,326,887-

NAILING MACHINE Original Filed June 13, 1941 2. Sheets-Sheet 2 of" .the nail.

of hexagonal cross section and a shank 26 1(Fig.

to the greater dimension or length of fthe head, In the finished shoe, the lower The machin is PliQ V ded with f aceway, 64

- whichhas acover I26 and comprises'two spaced plates 92 (Fig's. 2*and3') bolted together and I supp rted, .by means of two projecting portions 1 onegoi which isv showngat 9'4, 3X received in c omplern'entally-shapedlgrooves clamping members.ona bracket (not shown) secured-to j the head of the machine in the usual manner.

edges 28, (Figs. 10 and "11) 0f .fa'oes 36 0f the. I

nails engage Leach other, with the result {that a greater weight'of material with'consequentlygreater wear resistance) can beprovided alongi agiven. strip of sole 22 than is possiblewlth j -corresponding nails having conventional heads of round crosssection. Moreover, the wedgingj .'.Tl 1e..width of a slot or guideway 95 formed beg tween parallel Walls" 7 96' of the lower portion of the raceway '64 is slightly greater-than the diens on Bgof theshanksZG. oi thenails 2Il delive'red to jthefslot85 but is less thanthedimension A- of the shanks. The raceway ,64 and a eifect between the nails insures greaterhold ingpower between said nail than in the case of nails having heads of'round' cross section. Accordingly, thereis considerable'advantage in using such nails in the; arrangementfabove del' scribed in military boots. Although theillustra- "tive machine is described withreference to hobj nails havingheads which are of hexagonal cross modifications in shape, the parts of'themachine of other than hexagonal cross section.

forwardly and rearwardly extending icain shaft 34. Mounted upon: the. frame, 32, as. disclosed in said Letters Patent'No. 932,535, isa"head. 36

which is arranged tofswing upon th'e camshaft 34. Arranged for vertical'reciprocation inj'the head 36 are a driver bar 38 .and an 'awl holder The illustrat-ive machine comprises" a column I hopper (not shown), from which the nails are 'deliveredto the lower endof the raceway, are

' described imdetail in the above-mentioned 'Pat-- I em No; 2,319,348; the nails 20 can only section, it willbe understood that, with slight H '25 can be'arranged to operate onnails'havin jheads, 1

(not shown) on which is mounted a frame 32 v (Fig 1) having .journ'aled" therein a h'o'rizontal, 3

adjacent edge surface of the" sole. ':-26 -'-are arranged to be moved separately from *the raceway 64, as hereinafterdescribed, and to travel' down the. lower portion of the. raceway '64 with the length L of their heads disposed approximately at right angle's'to the' length of "the'irac'eway, this arrangement being desirable in orderthatfthe length Lpfthe heads of the nails driven into the-sole ofthe boot/shall be disposed at approximately right angles to the The nails be received inarnaili'receiving block!!! (Figs. 1

and 6)having' a passage!!! :(Fig.' 6 the crosssectional' shapeof. a lower portion of which corre- '"sponds tojthat of theheads of the nails. The

40. The driver bar-is arranged to be raised,'on 7 i rotation of the cam shaft 34, by a car'n 42 "formed I on a'forward" end portion ofthe' cam shaft, thev cam being arranged to? engage" a block 44*secured to the driver bar 38 to-raise the latter. .The

driver bar is arrangedto beiorced'downwardly the block vM), to drive a nailf-iinto the'sole or.

the boot presented to the machine, by means of a spring (not shown), such as'disclosed'in United States Letters Patent No..i490',624, granted January24, 1893, onan application filed in the name I of'Louis'Goddu, and referred to in.saidUnited J States Letters Patent No.. 932,535,- the forcebff said spring being transmitted to thefdriverbar 36 'and' 'to' which a segment 52 'is's'ecfured; the

segment. having teeth 54 in engagement with .-rack teeth 56 formedalon'ga side of the awl.

holder 40. The head 36 is a-rrang ed to be swung in a clockwise direction, a viewed in Fig. 1, after the descent of the 'awl .48 topriclr the sole of the boot, to e'fiect feeding off 'the latter in a well-known manner, the swinging" of the head being effected by connections including a block 58 receivedin a guideway 60 formed in a portion of the head. 'The block 58 is adjust ablymounted ona cam-actuated arm 62 soj'th'at (after',;the cam-42ridegfout of engagement with it is fully driven into the-work;

nails are arranged tobe driven into the work b'y meansof a driver I02 (Figs. land 8) having "a nail engaging end portion shaped and a-rranged to engage. the head of the nail in such a manner as to control the orientation oi the *n'ail until ;To separate nail's' one b ene fromthe' lower 'end portion of the" raceway 64, the following. means,- is pr0vlded. '-"Rotatably mounted on a horizontal'stud I40 (Fig.' 1) secured to the block 44'' on the driyer bar 38 isa roll I42 which, dur

6 mg the upward stroke f the" driver bar, is arranged to engage-a 'curved surface-l44'onfan u per "portion of a-lev'ei I 46 pivotally mounted at' l48 tothe head- 36. Th'elever-lj46 nursed fin ajclockwise direction; asviewedin Fig. 1, so f-thalt its surface I 4 4-is en'g agedby the roll I42 on upwardfmoveinentof the driver bar 38, by a f spring I -connectd'tothe lever and to the 36 by .means' of a link .46. The fawliholder 46. i is,provided with anawl 48 and'is' arranged to ber'ai'sed"and-loweredby means ofa'cam-opere ated rockshaft 56 whichflis journaled in the head ead-as: z

I A rneniber I52 'l(Figs.j1, 2, 3 and 5),isf pivotally fmo'unted-ona lower end 'portlon'of the lever I46 through' the provision of: a removable clevi s pin I54. The member I52fis disposed generally paral- I lelfto the i pper surfaces of the-raceway plates 92; and is reciprocatedina direction extending generally lengthwise of such surfaces and to the right as viewed in Figs. 1 and 2, when the roll I42 moves upw'ardly against the curved'surface I44 of the lever' l 46. The path of the; member I52 durin'g itsretractive movement to the left is' adjustment of'the position ofj'the block'onlthe movement imparted'to the head 36y 1 arm is effective to varythef amount of feeding The boot being operated 'upon is' arranged to be supportedfby a horn (not. shown) against a 6 {foot plate 82, corresponding to that indicatedby igfzerers cenumeral 2I insaid Letters Patent No.

and 3) which forms part'of thernember I52 and co-operates with a finger I 56 .pivotally mounted on the 'r aceway 64', 'asfwill appear later. The member I52 i's'urged' in aclockwise direction; as viewed in Figs. '1" and 2 about the pin I54 by V a spring I66 connectedat itsiopposite ends to an armfo f-the member andto the lever I46, respectively. Extending from the'plate I56 in a direction'generally parallel to thejraceway isa bar-162 'on whichis slida'bly mounted a block I64 (Figs; 1,

2 and 5)..the' blockbeing urged-tome right. as

' the machine is passage I Mith'ereing During the movement; of

j aaaassv.

the: nail, the. portion .196 of: the ,arm -I94 bears 'against-thelzhead of the nail with considerable pressure, thus facilitating thecontrollinggofithe as a end a; i sepa t r s dcs a c prising a fingermountedforimovementwidthwise of theraceway and constructed and arranged to same' time, the-camming finger .208 ismoved forwardly (that is, transversely of fithe'raceway) under the actionof the cam M2 to engage the shank of the nail and .to urge it "through a lower a portion 234 of theopeningQZZU, after which the force the shank fof the endmost nail in the raceway into; the driver passage; said separator also .comprisinga member-[which isjconstructed and I arranged .to-en'gagectheihead of said endmost nail andtofmovelengthwisetof thefraceway to force the head or -the; nail intofthe driver passages finger 208 closes said lower portion 234; during 7 I the driving of the nail on descentof-the' driver.

During the driving, of the nail, theorientation thereof'is controlled by thecross-sectional shape of the passagesIIlO; 2I8 and by the'engagement of the'shaped lowerend portion of the driver withthehead of the. nail. lj During. the separation .of. the nail, if, any jamming occurs between'i'thenail and the rising driver,'the block I64 will yield relativelyto the member I52; against the 'aotion of its. spring- I66 7 so as to prevent-damage to the parts. As soon as the.driverghasrisenclear ofthe nail, the latter will enter therpassag'e 'IIIII in the block- 798 through'the opening 220. 'After separationaof'the endmost nail, when the'member I52 is movedits maximum distance tothe right, as viewed inFig. 1,1'the next nail will be retained in" the raceway by the hooked endportion -I96;of the-arm I94, and the cam surface I88 .on the member I52. at thistime will have'been brought into alinement with therounded surface I86 iofjthehfinger I58, whereupon thewspring I841swings the finger in a clockwise'direction, as viewed in Fig.3; to carry the upper end portion of the finger under the '7 surfacel88 1i: i I 7 During the descent of the driver I02 (an initial portionof which is controlled by a surface 236 on the cam '42 so'that the member I52 will have had atleast a part of its retractive movement, now to be described, imparted to it before final descent'of the driverso that no; fouling of the 7 fingers I10 of .the block I with the driver occurs); the'roll I42 rides out of engagement with the surface I44 of the lever- I46 and the spring I 50'swings the lever in a clockwise directionto carry the member I52 upwardly andto .the =left',

as viewedin Figs; 1 and 2. :As the member I52 is moved to the left, the plate I56 rides on the upper end portion of the finger lliauntil the surface 'I 98 is resting. on the finger, thus swinging 2. A nailing machinehaving, in combination, a

block provided withadriver passage,- a raceway) forsupplying hobnails, said block and raceway being mounted for oscillation together and' a nail separator comprising a member whichis constructed and arrangedto engage the. head or the endmost nail in the raceway, said member being "movable. lengthwise of the raceway and into said driver passagepositively to move said nail into the passage.;

3. A nailing machine having, in combination, a driver, a throat, provided with a driver passagaa raceway for delivering hobnails, a nailseparator comprisinga 'member, means for moving said member lengthwise otthe raceway and into the driver passage, spring-Operated means for constantly urging the driver to a lowered position,

a and means comprisinga cam for retarding the separator comprisingia memberconstructed and jarranged to engage the headofan .endmosthobfirst part 0f the downward, movement of c the driver against the; action of said spring-operated meansin order to insure that said member of the separator has been moved from said driver passagebeiorereleasing the driver for actuation by said spring-operated means} a 4.]A; nailing machine comprising a frame, a head which is mounted for swinging movement on the frame and has a block provided with a driver passagaa driver a raceway for delivering hobnails to a position adjacentto theiblock, and a nail in the racewayfand to move lengthwise of theraceway and into the driver passage positively to movesaidhad of the hobnail into thepassage.

5. A nailing machine having, incombination, a driver, a. blockprovided with a driver passage, a

; raceway for successively delivering hobnails to a position. adjacent tothe block}; a separator comprising a member constructed'and arrangedjto engagefthe headof an endmost'nail in, the 'raice- .way, and means operated in timed relationwith I the; driver for yieldingly, moving v the f member the member I52 in a counterclockwise direction about the pin I54 against the action ;ofthe spring I60, to lift, the fingers I10 ofthe block, I I64 over the head of thenail which is now end-1.

most in the raceway. Further slight movement of the member I52 to the left'causes the cam surface I 92 of the plate I56 to engage the rounded end surface IIiG-ctth'e, finger I58 to cam the finger in'. a counterclockwise direction into the.

position it occupies in Fig. 5, thus allowing the member I52'to, be turned in'a clockwise direction about the pin I54 by the action of-the spring.

I60 so as to causethe surfaces I-I2, I'M to descend 7 into engagement with and to be forced-against.

. the head of theendmost nail in the raceway. I

The parts now occupytheir initial positions and readylfor; the next cycle .of operation. c I

Having described our invention, what we claim w s h j w vand into said? passa e to move said endmost nail intoj .the passage. V

6. A nailing machine havi'ng,'in combination,a

block having a passage, a driver movable/along the passagfi a raceway'ior deliverin hobnails successively to a position. adjacent to the' --b10ck, a v V spring-pressed' arm'shaped and arranged to'be endmost-nailinto the-passage of the block;

as newand-desireto securexby Letters Patent T I of the United States is: w

1. A nailing machine having, in combination, a

driver, a driver passage,a raceway for conductingv .hobnails. to a position adjacent to said. driver .'7 I n a machine iordriving hobnailsa driver passage, a raceway; a nail separator comprising a nail camming finger movable transversely of the raceway and'a nail pushing}; finger :yieldable lengthwise of the raceway, and means for simultaneouslyoperating the fingers to transfer an "8. In a'i-jmachin'e for :drivinghobnails havin ftfrusto-pyramidal heads, a drive ripassag'e, a raceway; and a separator comprising a member having angularly related facesfor engagingqthe top and rear: surfacesof the ghead of an "endmostcnail j injtheraceway, said member beingihodfly movableilength wise Of the raceway and into said driverpassa'ge. f a V 9. Ina machine for" driving hob'nails; aidlfive'r "passage, a raceway, :a separator comprising 7 a 'said. endmostnail into said passageand then back boa retracted 'positiem and means fob-raisin said member against the action of saidmechaniem during .the' retractiye movementcf the'memher to' insure that said' member shall clear'the heady member constructedand arranged t9, engage the} duringiitsretractive motion;

7 nail separator ccmprisinga member constructed I "10 A naiiing'machine having, in cembination, i a drivenpalssage;a raceway fel conducting nails to a fpcsition adjacent to the driver passage, a I

of r a succeeding 'eridmost, nail in! the raceway,

- v I 11 A nailingmachinehaying, in combination a driver passage, a raceway'for conducjting ails to a positicna djacent to the driver passage, a nail t separatdr comprising a member constructed and: arranged to engage the headqof an endnibst nail f1 infthe raceway, mechanismiforcausing, the 'mezn-a; her to force theheadof the nail downwardly with' v yielding} preesui e against the raceway; means :fQI"

' moving the member generally lengthwise of'the'i raceway'fand into theflfiveypas'sage to rnoveeaid endmostjnailjinto said passage-and then back to l .a. retracted-position,means fonraisingtsiaidmembel against the-action*cf'said'mechaniszn during fthe'retract'i've movement 0-1 themember to insure V thateaid'member shalll clear the head ef a sue-5* :eeedingendmost naiL'in. the raceway, and means] 1 foi rendering 'the'ilast-named meansineffective V asthefnember arrives near its retracted position t'di'ende'r said mechanism efiectiv to force thc' and arranged to engage thehead of an endmost a nail in -the raceway; mechanisl n ier causing the I {member tofcrce-the head of the nail dc-wnwarqly V with yiehiing pressure againstthe raceway,-m eans 7 I member against the head 1? th last-named nail. f

' MAURICE'BOBERTS;

form oving the member generally Iengthtfise of I f the raceway'and into the driver passageto move A FREbEDWARn RICHARDS;

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