US1060377A

US1060377A - Nailing-machine.

Info

Publication number: US1060377A
Application number: US64011811A
Authority: US
Inventors: Edward Stutzer
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-07-24
Filing date: 1911-07-24
Publication date: 1913-04-29
Anticipated expiration: 1930-04-29

Description

E. STUTZER. NAILING MACHINE. nrmonxon rxLnn wuu. m1.

Patented Apr. 29, 1913 6 BEELTB-BEEBT l.

TTRNEYS B. STUTZER. NAILING MACHINE. Anmoruon msn mum, m1.

1,060,377. Patented Apr. 29, 1913.

5 SHEETS-SHEET 2.

if La' W/TNE88E8 INVENTOR.

MMM... fan/ARD grz/zzazsz@v E. STUTZER. NILING MACHINE.

Anmonxon rmzn JULY 24. 191x.

Patented Apr. 29, 1913.

6 BHEETB-BHEET 3.

if F/Lg .3

E Zz NVENTOR E. STUTZER.

NAILING MACHINE. APPLIOATIOK FILED JULY R4, 1011.

Patented Apr. 29, 1913.

6 BHEB'N-BEBBT 4.

NVNTOH Src/MEAL.

WITNESSES 'UNITED STATES PATENT OFFICE.

N AILING-MACHINE.

Speoioatton of Letten Patent.

Patented Apr. 29, 1913.

v Application tiled IulyM, 1911. Serial No. 640,118.

'/'o all whom 'it may concern Be it known that I, Eowaiin S'iU'rznn, a citizen of the United States and residing at Brooklyn, in the county of l of New York, have invented certain new and useful Improvements in Nailing-ltlachines, of which the following is a spec'iiication, such us will enable those skilled in the ait to which it appei'tains to make and use the` This invention relates to machines for driving nails and particularly to machines of this class designed for use in nailing down floors, and more particularly for nailing parquet floors; and the object thereof is to rovide an improved machine of this c ass which, in the form of construction shown, comprises a truck frame mounted on wheels and adapted to be moved around over a floor, a iial feeding and placing mechanism, a nail driving mechanism and a mechanism geared iii connection with the wheels of the frame for moving the machine around over the floor; all of saidmechanisms being geared in connection with .and operated by a single crank shaft, the construction and operation being such that the machine is given an intermittent or step by step movement and-a nail placed and driven at each movement;

and with theseand other objects i-n view,

nail driven; Fig. 2 .a view of the machine similar to Fig. 1, but showing part of the construction in vertical section and art broken awav; Fig. 3 a ri lht side view o the machine; Fig. 4 a 4dctai front view of two parts of the nail driving mechanism on an enlarged scale, one part being in vertical section and a portion of the other part -bein broken away; l5 a section on-tie line-i-ofI 1g. 4; Fig. 6 a viewsimilar to Fig.,4, but showing the parts in a different position and the (ings and State' method of their operation; Fig. 7 a view similar to Fig. (l, but showing the parts in a still `different position und showin a nail driven Fig. 8 a partial horizontalg section on the iiiie 8-8 of Fig. 2 and on an enlarged .scale and showin f details of the nail feeding 'and placing mec iaiiism; Fig. i) a view similar to Fig. 8, but showing the partsI in a difjfereiit position; Fi f. 10 a section on the line i10-10 of Fig. 8; li 1g. 11 a partial section on the line 11-11 of Fig. 8; Fig. l2 a face view lon an enlarged scale of a nail feed drum Iwhich forms part of the feeding and lacing `mechanism and an end view of which is `given in Fig. 2; Fig. 18 a detail view on an enlai ed scale of a part of the nail feeding and p aciiig mechanism looking iii the direction of the arrow X of Figs. 1, 2 and 3 ;,Fig. |14 al section on an enlarged scale tliron h a .nail guide chute which forms a part 0 the nail ceding and placing mechanism, said .section being taken on the line 14-14 of ;Figs.,1 and 2; Fig. 15 a plan view on an enlargedscale of a rocker disk which forms a part of the nail feedingand placing mecha- Vnism and a side viewA of which is given 'in lFig. 3; Fi 16 a partial section on an enlar ed sca e on the liie 16-16 of Fi 1, ,an `Fig. 17 a front view of avdetail o the hammer mechanism looking in the direction of the arrow X"l of Figsrl, 2 and 8.

In the accompanying drawing, Figs. 1 to 3, inclusive show my improved nailing machine complete with all the parts assembled |and ready for use and for the purposes of this desci'i ition the side shownin Fig. 1 will he cal ed the left sido the side shown in Fig. 2 the right side. while the front of the machine is at a inFigs. 1, 2 and 3, and the liackat a. The framework of the machine, in the construction shown, comprises '.a base portion b which may be solid in :form or consist of o )enwork together Iwith a front upright vote-shaped member b having a cross hea `to i portion b ano .a rear uprightyoke-shaped member b having a crosshead top portion b which forms a handle in the manipulation of the machine las hereinafter described, and the frame is yprovided with a front axle b havin wheels anda rear axle 11 having wheels The yinail box c is set into the right side portion of the frame and the right side parl? of the rear upright yoke-shaped frame member 7)* or the lower part thereof is cut away and said side of said frame member is secured to the nail box o as shown at o, and said nail box is thus made to form a part ofthe frame and is connected with t-he base by vertical side members bw, and the front and back frame members b and b are rigidly connected in any desired manner. Mounted transversely of the frame and above the nail box c is a crank shaft e rovided with a crank c, and secured to said shaft is a cam disk 0 and secured to the right side of the frame member b, in the form of construction shown, is a keeper 0 which incloses the cani disk o and through which the shaft c passes, and in the operation of the machine as hereinafter described,l the turning of the shaft o operates the nail feeding and placing mechanism, the driving device or mechanism and also moves the machine around over the door.

In the construction of the nail feeding and placing mechanism I secure to the bottom of the frame ceiitrall of the front thereof, a forwardl directe keeper d having a chamber d in which is placed a spiral spring rl and in which is also lacedI a vertically movable plunger d* provided with a downwardl directed extension d which is movable t irongh the bottom of the keeper d and which is provided with a supplemental extension d, and the vertically movable pluner d* is provided with a central vertical ore or'passage d' which opens upwardl throughl the top thereof and which exten s downwardly through and opens through the downwardly directed extensions d and fl and said bore or passage d1 forms a nail placing guide chute through the plungerfd and s'aid plun er serves as a nail older and placer, and ,'t e top'portion of the core or passage d is enlarged laterally and to the right as shown at d, and said plunger is also provided to the left of the bore or passage d' with another bore or passage (1 arallel therewith and which opens upwardly through said plunger and which, in the construction showmis` provided at its lower end with' a small outlet port or assage rl controlled by a ball valve d am above which is placed a transverse stop d, and the downwardly directed extension d of the plunger d* is rovided at one side with a stop plug d w iich limits the upward move-y ment of said plunger.

The construction of the plunger d and its operation are clearly shown in Figs. 4 to 7, inclusive, and extending downwardly into theenlarged top ortion d of the bore orv passa e d' inthe p unger d is a conical ide c utefe su ported'by an L-shaped racket e` secure to the frame at'c' and provided with'a' top plate 'o hinged at e" to a'n arm atsecuredat el', and mounted in the L-'sha ed bracketfc is a circular casin 'f containing a cylindrical rotor f proviiled 1,ooo,377

with a plurality of lon ritudinal rooves f" in the face thereof whic i are equa ly spaced and which, in the form of construction shown, are six in number as shown in Fig. 16. t

he rotor f is provided at its-lower end with a bottom trunnion f and at its upper end with a in f which passes through the plate c and) on which is secured a ratchet wheel f, and the teeth on the ratchet wheel are equal in number to the grooves f in the rotor!2 and the free end of the plate e* is provi ed with an aperture through which one arm of the bracket e passes as clearly shown in Fig. 18 and the casiii f in which the rotor f'* is mounted is provi ed in its opposite sides with slots or openings j'.

The nail box a is provided with a ottoni extension oT and the casing f of the rotor ("1 is provided with an upwardly and bac wardly directed chute g which is U-shaped in croi-is section and o ien at the bottom and closed at the top and provided in the top thereof with a longitudinal slot y, and the rear end of the chiite g is secured lo the bottom extension o of the nail box o at y.

Secured in the bottoni extension o of the nail box o is a horizontal forwardly and backwardly raniing plate g provided in the top thereof witi a longitiu inal recess y and at the right of the plate g is another plate (1 having a slot q" which corresponds with the recess g", am in the right side of the downwardly directed extension c' of the nail box is'a slot g which corresponds with the slot g" and the ends of the slot g in the plate g are provided with enlargements y" and gw.

' Mounted between the plates g* and g is a shift bar It on which is mounted a longitudinally movable sleeve h provided at its right side with a grooved stud h movable in the slot g and having a pin h* which passes through and is movable in the slot y" of the plate r/. The sleeve h is also provided beneath tlie in It* with a finger h the o eration of w iieh will bc hereinafter described, and at the front end of the shift bar li. and on the left sido thereof is a spi-ingr h and at the rear end thereof and on the right side thereof is a spring It and these springs force the opposite ends of said bar in opposite directions a. ainst stops h", and the'stud h is rovided )oth in the top and bottom thereo with grooves which are ar ranged in pairs as clearly shown at It in Fig. 10.

n the bottom front portion of the nail box o and over the downwardly directed extension of is mounted a transverse shaft on which is mounted a nail feed drum il 4and over said feed drum is a downwardly and vbackwardlv inclined partition v'. hinged at z" and provided with a downwardly, back. wardly and forwardly curved guard plaie lll) z .which -terminatesibelowthe drum Fasi shown atri and: belowwlchandextendin downwardly .andfforwardly iromzthegbac wall.' ofi the. nail box e is a artitionrh which y extends downwardly-.andiorwardlyI beneath the drums?? and terminates-,.at i', madforwardly ofwhieh is.a-downwanilyand back-A wardly curved guide plate-i?, andthe-parta i and .if :form ,annailchute- 1j which` Aconsti.l tutes the bottom of the.nail.receptacle-:9":y in, the top portion of the. nail'box c. With thisa constructioniit willtbe seen that theldrumi i is rotatable in a semicircular space formedf bythe parts i andi'andithe nailsas they ass throu h the chute j areex osedA to the: ottoni sur ace ofthe drum i'. 1iihe d-rum it, is provided on'the facethereof with pro. jectin pins j whiclrare spaced at intervals. t iercontransverselyy thereofv iny anyl de`4 sired manner, and also-with nail grs j*- preferably composedof. pairs of pinsp aced close together .and suitably spaced onathe; drum i, and some of these grips -arelar-I ranged adjacent to one. end and others `ad -jacent to the other end of said drum, orinl,

other words, are not in circumferential aline-l ment. 1

At the opposite sides of the'top portion! of the downwardly directedextension al: of

:the i nail box c arcguide plates, lc which .are

downwardly and inwardl inclined and! which -forni a hopperv in the ottomI of whichi is mounted an a itatorplatel'k which ran eer forwardly-and ackwardlyv and is provi edi with a large central longitudinal slotk,andl the plates lc areextended downwardly asl shown at. ct to form a ialpplementalhopper in thebottom, of which is a forwardly and backwardlyA yranging agitator platera which ,is provided with1 a central longitudinal slot:

:.of less transverse dimensions than fthe? slotfk, andt-saidi late la isalso lon itudi-i nall movable an Itheiront andbac ends; oft opiates/c and tflpasslooselythrou h;

the front and baokwalls of the downwar yi directed extension c' of the nail box o. The! plates 1c and lc arepreferably conoavo.4

convex in cross-secticm', and-the plate-'kn is: provided at itsvfront endwith a downwardly directedy extension/n1 and the plate/c at itsi rear end with an u )wardly directed exten. sion'k', and these p ates. are. connected by-.a horizontal bar m at the -rightsde of thema-1 chine, inthe form of .constructionshownf and in the operation of the machine as4 hereinafter described both of said plates are agitated Ior given a forward l andbackward movement at the same time and the top plate la serves as a ycentralizar and'dropper device for the nails which pass throughthe. slot Ic' and drop into theibottomfsu plementalhop er beneath said plate -an the pended'l by their heads as clearly shownin said'igure and inzFigfQyand the relative arran ement .off the shift bar hand its connectar?A arts-and the hoppers for-med by the plates land their extensions,- k*,.and the agitatingzplateslc and-k is. 'clearly shown in Figs 8.to 11,inclusive, andftheffront wall oftheJ downwardly directedlextension. o1 of tbe'nail box c; is rovided with avertically arranged -slvot k t roughf-whichnailsk", in the operation of themac'hine. as hereinafter (lescribed, pass into the chute g: -which extends ,as=hereinbefore described from the bottomof the downwardly directedexten- `sion ol of,y the. nail box to. the circular casingr If of the rotor f.

At the front of the machine and centrally thereof is a-supplemental bracket frame n lconsisting'. of vertically arranged guide bars n any desired number' of whichfmay be eniployed, vand the lower ends of which are snpported on and connected with-the keeper d, .and-thea per end lportions of which arc connected iyabloc n and said'bracket frame 'n iseon-nected with the.` main frame of. the machine by .a transversely .arranged plate 'or'plates 1n* which-are curved orlwardly and scoured to one or moreof thc guide: bars-n and* to ,oneof which the arm c; is .secured,- and mou-atedverticallyv in said bracket frame and movablefvertical y; therein'isl a naiLdrivin shaftfoprovidedat its lower. end-,with ay ead o, `.and mounted between .said headzand Ithe block nl isa strong spiralspringfo" which normal'liyserves to 'force'..smdshaft downwardly. he head o Iof the shafto is provided'ceutrally with a downwardly direct'J nail dri-ver pin o* which is .adapted vto pass downwardly thro h the border-passage d inA thefplungorille, and .said head o2 isalsoprovided with` a. downwardl. directed plungerfrod o .ada ted tolenter t e. boreorpassage d in sa' plunger d.

' Aty the-left. of the shaft o and above the ,same is a vertically `arraa ed plate p having la vertical .slot 2 and sail shaft is provided with a detacha le collar p having a pin u* which extends4 tothe right and through the -slot p, and connected .with said pin are link members p to which is ivoted at p an arm p" which is voted .-wit in the main frame at pand w ich is provided with aback -wardlydirected extension p ada ted to bc operated by the cam disk c, an said cam jdlsk is provided with a projectin nose )ortion pw, and in the oEeration of t ie-mac inc ashereinafter descri ed, the turning of thc crank shaft o depresses the backwardly dilrected extension p of the arm p and raises thenail driving shaft o until the nose 7N" ,.of the' cam disk c slips ofi' of the end of said arm,` at whichtime the shaft o is driven downwardly, bythe spring o".

.A crank arm r is pivoted to the right lUl,

llt',

hand side of the main frame at r" and provided with a semicircular crank portion-r which isadapted to operate in connection with the` pin p, and when it is desired to move the machine around from one point to another without operating the same, the arm 1' is turned backwardly and in this operation the semicircular part. 1" of said arm operating on the pin 7)* raises the shaft o into its ghest position and at the end of the backward movement of the arm r the pin p drops into a recess r* in the part 7" of said arm and locks said shaft in its raised position.

The left hand of the crank shaft e is provided with a sprocket` wheel s,- and' mounted on the corresponding end of the shaft z' is another sprocket wheel s", and said shaft is rovided with an arm s having a longitu inal slot s", and said wheels s and a2 are eared in connection b a chain s.

Pivoted elow the sprocket wiieel s at s" is an upwardly directed arm t which passes u i inwardl of the wheel .s2 and is provided with a bac wardly directed member t* having an outwardly directed finger piece t", and the inner side or face of the wheel s is provided with a pin s which operates in connection with tie'up er end ortion of the arm t and forces it ackwar ly at each revolution of said wheel. A

'An arm u is pivoted to the'arm t below the ywheel s2 at u and said arm extends forwardly and downwardly to-the ratchet' wheel f onthe'pin of the-'cylindrical rotor f and is provided with a nose u* which operates in connectionwith the teeth of said wheel and said ratchet wheel is provided with a spring pawl u* which prevents its backward movement and at each revolutionof the wheel s2 the arm t is iven a backward and forward movement, t e arm u a backward and forward'movement, and the rotor f is turned one step or one-sixth of a revolution. vA spring s serves to hold the arm t in 'the position shown in Fig. 1 and a spring u is secured to the Imain frame member b at u and is' r'ovided .with an anti-friction'roller u whci bears on the outer side of the arm -u and normally serves to hold the nose u of said arm in connection with the ratchet wheel f. f

An arm v is pivoted tothe crank shaft s at fu by a pin which passes through'the slot s in said crank arm,v whereby said' arm 'v may be adjusted `longitudinally on 'Said crank arm and said arm v extends downwardly and forwardly and is provided atits lower end with a-nose piece/n" which-o erates in connection witlra ratchetvwhee o connected with 'the frontfwheel b1 at-zthe left end ofl the front axle bU-of the truck frame,l

s the front wheels ofthe truckframe are r given a forward movement and said truck pivoted an outer ynected with the bar m, .the bar.` z is I .slot z througi which the pin h flooring' a .member and at each revolutionfsof 4the wheely frame is correspondingly moved forwardly a predetermined distance, preferably about one inch and a pawl o operates in connection with the ratchet wheel e to prevent the backward movement of the truck frame.

The shaft z' of the nail feed drum i is provided on the right side of the machine with a rocker disk w which is shown detached4 in Fig. 15 and the inner face of said rocker disk is provided with diametrically arranged pins w and the outer face thereof is provided with circularly arranged pins w. Below the rocker disk tw is a pivot pin fw* which may be supported by the nail box o or in`auy suitable way and to which is downwardly directed arm 1/ and an inner downwardly directed arm s. The arm z is provided with a yoke-sha )ed head .e2 which is movable between the isk w and the nail box c and one arm of which is provided with a proljectin nose portion z, and the pins fw of tie disc rw operate in connection with the side arm portions of the yoke-shaped head e of the arm z. The arm y is also provided at its upper end with a double or yoke-shaped hea y, the separate parts of w lich are provided with projectinr nose pieces y, and the pins wa of the disk -fw o erate in connection with the parts of the hea y of the arm y. The lower end of the arm y is rovided with a longitudinal slotI y* througi which is passed a pin y conand the lower end of with a longitudinal of the stud h" of the sleeve h2 on the bar h passes.

rovided .In Fig; 1 I have shown my improved nail driving vmachine mounted on a parquet and the operation of said machine will be readily understood from the foregoing description when taken in connectlon lwith the accompanying drawing and the Afollowing statement thereof. In practice, the cross head b of the rear frame b is usually grasped by the left `hand and serves as a handle for guiding the machine2 while the crankl shaft c is turned by the right hand andit will also be understood-that in the o eration of the machine it is moved forward in a strai ht line, and the nailsare driven in straig it lines and preferably about one inch apart. In this 'operation of the machine the arm r is first turned 'nto a vertical position which raises the nail shaft o and throws it out of operation and at the same time the spring-operated armu is drawn outwardl so that it will not engage the ratchet w neel f, the crank shaft c" is then turned to the right rapidlynxntil the chute q is entirely filled with nails asshown in `ig. 2 after which` the arm r is turned down so as to place thel nail shaft in operation by allowing the arm plfor the backwardly'directed. end p thereof to engage the cam disk 0 after which,

.placer,,the nail shaft o'is given a complete operation and a nail is. driven and set or! countersunk as indicated in Fi s. 1, 6 and 7. It will be understood that t e plungerI d i is normally held above the floor by thei orme the bottom of said slot'is ofsuchsize lofthe head o passing into tie spring d so that the truck frame may move; freely over the floor, but at each downward movement of the shaft o -which occurs when, the truck framel is stationary, the plunger d" is forced downwardly by the lunger rod 0"? lunger d" and forming an air cushion in tie boro ort passage d", and at each of these operations' as hereinbefore stated, a niiil is driven, andi when the shaft o is again raised the plun-l ger al* is forced upwardly by the spring df" and iii this operation at each upward movement of the shaft o air enters the boi'e ori passage rl through the bottoni thereof and' size of the plungerrod o is such as to er-l mit a slightescape of the air from said ore or passage when said plunger rod is forced downwardly tliereinto. My invention, how: ever is not limited to the exactconstruction of the plunger d* and the plunger rod 0' and its operation assaid plunger, and these' features may be changed or. varied within the scope o said invention. It will'be un. derstood that at the beginnin of the operation the nails kw are deposited inthe recep- -tacle j in the nail box o and said nails arel simply dumped into said receptacle without any regard as to order or arrangement, and saidnails fall into the bottom of the chiite formed by the parts i and i" and are engaged by the pins'j on the drum "which serve to arran e them at rl A,ht angles to the axis of said directed backwardly. As the'driim continues to turn, the'said nails are successively picked up by the gri is y which o `crate in connection with tie leads thereo and as the drum continues to turn, thc nails are carried around the perimeter thereof and are droppedl into thehopper formed by the lates lc. The slot le m the plate le which as topermit the nails to pass freelv therethrough, but the slot lc" in the plate fc" which lforms the-bottom of the hopper'y formedby the extensions k of theplates lc will not permit the heads of the nails to pass therethrough=andthepointed end portions of said nails therefore pass downwardly through said slot as shown in Fig. 10 and the constant agitation of the plates la and/.1" efruiii with tie heads thereof lfected by the arm g/ and the bar m facilitates this movement of the nails as will be readily understood.

The normal osition of the shift bar /L andthe sleeve t thereon is that shown in Fig. 8 and in the above described operation the sleeve h2 is moved back and forth on said bar by the arm z operated by the fpins w on the disk w and said sleeve lL makes a complete forward and backward movement at each revolution of the crank shaft c. In this operation, at the beginning thereof, the said bar is in the position shown in Fig.' 8 and the sleeve /i is moved forwardly, the plate g operatingin the outer rooves in the top and bottom of the lug lr". n this operation the finger h projects through the slot y in the plate q* and moves the nails la depending through the slot la, forwardly, and in order to illustrate this operation the nails liz" are indicated in Figs.

l8 and 9. At the end of the forward movement of the sleeve la* the front. end of the shaft h is forced backwardly by the spring le and the lug li" of the sleeve li movesbaclcwardly throu h the opening y at the front end of the sliit yl so that the plaie y will move in the inner grooves iii the top and bottoni of said lug, and this backward movement of the front end of the shaft /L 9 withdraws the linger l1. so that it will move backwardly on said shaft without interfering with the nails dependin through the slot la as shown in Fig. 10. hen the sleeve vh reaches the limit of its backward movement, the rear end lof the shaft h is foi-ced forwardly b theI spring It" so that the finger h projects t ii'ough the slot (7 in the plate g* as shown in Fig. 8 and at t ie next forward movement of the sleeve It the nails are again yforced. forwardly, as will be readily understood, and into the chute g.

From the foregoing description'it will be seen that at each revolution of the shaft c" the machine is niovod forwardly one step of predetermined length or over a predetermined distance und at each of said ste )s a iia il lis passed into the rotor or rotary nai feeder nail, the countersinking of the nail resulting from the fact that the driving pin o is onger than the vertical dimensions of the .nail holder or the bore orlpassage d' therein,

.as clearly shown in Fig.

Inthe accompanyin drawing and in the foregoing description have shown and described the preferred form of my improved machine, but it will be understood that in v invention is not liinited in any of its arts to the details of construction herein siown and described, and changes therein and uiodilieations thereof may be made within the scope of the appended claims, without departing from the spirit of my invention or saerihcin v its advantages.

Ilavino' ully described my invention, what I chiim as new and desire to secure by Letters lntent, is:

1. In a nail drivin machine, a tensionully supported nail ho der, means for depositing nails in said holder at intervals, a device for driving a nnil deposited in said holder, and means forming a cushion between said holder and said driving device.

2. In a nail driving machine, a kee er, a vertically movable spring supporte nail holder mounted in said keeper, means for depositin nails in said holder at intervals, a vertica ly movable nail driver mounted over said nail holder and provided with a driver pin adapted to pass into said holder, said nail holder being also provided with a tubular socket and said driver with a plunger rod adapted to enter said socket and to form an air cushion, the ybottom of said socket being rovided with an air inlet having a valve wihieh is closed during the downward movement of the driver and admits air during the upward movement thereof.

3. In a nail driving machine, a nail holder, a nail box, a rotatable drum mounted therein, a downwardly curved chute connected with the bottom of the nail box and provided with means for depositin nails in said holder, a nail receptacle in sai box and provided with a tapered downwardly directed extension which is curved beneath said drum and the top portion of which is open, nail griping pins connected with said drum and ac a ted to remove' nails from said nail receptac e and to drop the same intothe bottom of the nail box, and devices in the bottom of the nail box for feeding the nails into said chute with the points directed downwardly.

4. In a nail driving machine, a nail box provided with a downwardly directed extension, a vdownwardly curved nail chute connected with the bottom of said extension and rovided in the top thereof with a longitut. inal slot, a nail receptacle in the top of the nail box, means for removing nails from said receptacle and dro pin the same into the bottom extension o sai( box, an agitator plate mounted in the bottom portion of said extension and provided with a central longitudinal slot which corresponds with and is in communication with the slot in the top of the nail chute and means for feeding nails suspended b their heads in the slot of the a tator pla e, into the slot in the to of the c ute.

i. In a nail driving machine, a nail box provided with a downwardly directed extension, a downwardly curved nail chute connected with the bottom of said extension and rovided in the top thereof with a longitu( inal.slot, a nail receptacle in the top of the nail' box, means for removing nails from said receptacle and dropping the same into the bottom extension of said box, an agitator plate mounted in the bottom portlon of said extension and provided with a central longitudinal slot which corresponds with and is in communication with the slot in the top of the nail chute, means for feeding nails suspended by their heads in the slot of the agitator plate, into the slot in the top of the chute, consisting of a laterally movable shift. bur mouiite parallel with said plate and below one side edge thereof, a longitudinally movable sleeve mounted on said shift bar and provided with a finger which projects transversely of and beneath the slot in said plate, means for moving the opposite ends of said bar laterally, and means for operating said sleeve.

6. In a nail driving machine of the classl described, a nail box, a nail feed druin mounted therein, and a nail receptacle in the top portion of said box and provided with a downwardly directed tapered extension which is curved beneath said drum and the top portion of which is open, the surface of said drum being also provided with nail arranging pins, and with nail grippin pins arranged in pairs transversely thereo 7. In a machine of the class described, a nail box having a downward extension, a nail chute communicating with said extension, a nail receptacle mounted in said box, a rotary drum mounted in connection with said receptacle and ada ted to discharge nails therefrom into said extension, and means for feeding said nails into said chute consisting of two longitudinally slotted agitator plates mounted under said receptacle one above another, a shift bar arranged at one side of and beneath the bottom agitator plate and the ends of which are laterally movable, a sleeve longitudinally movable on said shift bar and provided with a finger which projects transversely of and beneath the bottom a itator plate, and means for operating both of said a itator plates and moving said sleeve longitudinally of said bar, consisting of a disk mounted on the drum shaft and provided on its opposite sides with circularly arranged projecting pins, and two arms pivoted beneath said disk and havin cross heads in connection with which sai pins operate, said arms being in operative connection with said sleeve and said agitator plates.

v 8. A nail driving machine provided with a nail holder adapted to receive nails to be driven, a nail box, a chute leading from said box to said nail holder, a. rotary nail feed drum mounted in said box, a nail receptacle in the top portion of said box at one side of said drum and provided with a ta ered extension which passes beneath said rum and the top portion of which is open and from which the nails are removed by said drum in a predetermined manner, devices located in the bottom of said nail box and ada ted to receive said nails and to deposit tiem in said chiite through which they pass to said holder with the points thereof directed downwardly, and means for operating said devices.

9. In a nail driving machine, a nail holder mounted in the bottom front portion thereof, a nail box mounted in the top portion thereof and provided with a downwardly directed extension, a curved chute connectin the bottom portion of said 'extension with the top of lthe nail holder and adapted to feed nails thereinto at intervals, said chute being provided in the top thereof with a longitudinal slot, a rotary nail feed drum mounted in said nail box, a nail rece tacle mounted in said nail box and provide with a downwardly directed tapered extension which is curved/beneath said drum and the to portion of which is open, said drum being provided with means for removing nails from said receptacle and droppin the` same into the bottom extension of sai nail box, the side walls of the bottom extension of said box being formed into an oblong receptacle, an agitator plat-e mounted in the to portion of said receptacle and provided with a central longitudinal tator plate mounted below the first-named Slate and provided with a central longituinal slot which communicates with the slot Oopiel o! this patent may be obtained for slot, another agiiivo cents in the top of said chute, means for agitating said lates, and means for feeding nails suspende through the slot in the bottom of the agitator plate into the slot in the top of said chute.

10. A nail driving machine provided with ashaft, a nail receptacle and ii nail chiite in connection therewith, the combination with the shaft of an agitating device coinprising a disk riidly connected therewith and rovided at its opposite sides with circular y arranged pins, and two arms ivoted beneath said disk and provided wit cross heads having central recesses and adapted to operate in connection with said pins on each side of said disk, and devices operated by said a itating device for depositin nails in said c ute and in a predeterminet manner.

11. In a nail driving machine, a stationary support, a vertically movable spring supported nail holder mounted therein and provided with a central vertical bore which passes therethrough and is ada ted to receive nails to be driven, a vertieaiiy movable nail driver having a driving pin longer than said bore and adapted to project below the same when said driver is depressed, said driver and said holder being provided with means for cushioning In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this 21st day of July 1911.

EDWARD STUTZER.

Witnesses:

WILLIAM F. Lemmens, FRANK G. AT LEE.

each, by addressing the commissioner et Patenti.

Washington, D. 0.

the blow of the driver.