US328399A

US328399A - Nail-plate-feeding machine

Info

Publication number: US328399A
Authority: US
Publication date: 1885-10-13
Anticipated expiration: 1902-10-13

Description

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No. 323,399. Patented out. 13, 1335.

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W. J. GLADISH. NAIL PLATE PBEDING MACHINE.

No. 328,399. Patented Oct. 13, 1885.

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NAIL PLATE PENDING MACHINE. i No. 328,399. Patented Oct. 13, 1885.

WITNESSES: INVENTOR.

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No. 328,399. Patented Oct. 13, 1885.

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WITNESSES: INVENTOR.

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the nail-plate-holding barrels.

Jlimitan STATES ATENT trice.

VILL'IAM JAMES GLADISH, OF OHATTANOOGA, TENNESSEE, ASSIGNOR OF ONE-HALF TO J. XV. LOVE, OF FORT VALLEY, GEORGIA, AND J. V. ANTHOINE, OF EUFAULA, ALABAMA.

NAIL-PLATE-FEEDING IVIACHlNE.

,JPECEICATION forming part of Letters Patent No.328,399, dated October 13, 1885I Application tiled September l5), 1884. Serial No. 143,474. (No model.)

T all whom, it may concern.-

Beit known that I, WILLIAM J. GLADIsH, a citizen of the United States, and a resident of Chattanooga, in the county of Hamilton and State of Tennessee, have invented certain new 'and useful Improvements in Nail-PlateFeeding Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which .will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure l is a perspective view of my improved nail-plate-feeding machine attached to anail-cutting machine of ordinary construction. Fig. 2 is a longitudinal vertical sectional `view ofthe same. Fig. 3 is a side View of the machine, showing the operating-crank and the pitmen connected therewith. Fig. 4 is a side view of the opposite side of the machine. Fig. 5 is a plan view. Fig. 6 is an end View of lthat end of the machine which shows the nail-cutting apparatus. Fig. 7 is an end view of that end of the machine which shows the nail-plate-feeding mechanism. Fig. 8 is a longitudinal vertical sectional view, on an enlarged scale, ofthe nail-plate-feeding mechanism. Fig. 9 is a detail view, in perspective,ot' the cylinder containing the several barrels which hold and feed the nail-plates during operation. Fig. l0 is a longitudinal sectional view, on an enlarged scale, of one of Fig. l1 is a perspective view of the nippers or pliers which serve to extract the stumps of the nailplates from the barrels. Fig. l2 is a detail sideview of the mechanism by means of which the guide-pin working in the grooves of the feeding-cylinder may be raised or lowered, so as to adjust the position of the nail-plate-carrying barrels with relation to the anvil of the nail-cutting machine. Fig. 13 isatransverse sectional view of the machine, taken through the pivot upon which the cylinder is mounted. Fig. 14 is a transverse sectional view taken through the cylinder at the point at which the operating-gear is located.

Fig. 15 is a transverse sectional view taken through the cylinder and through one or more ot" the sleeves of the nail-plate-holding barrels. Fig. 16 is a perspective View of one of the barrels detached from the cylinder. Fig. 17 is a detail top view, showing the cylinder in position for operation, and showing one of the barrels of the same with the nail-plate contained therein in contact with the gage by means of which its position is regulated. detail side view of the cam-wheel by means of which the stump-removing pliers are operated.

This invention relates to nail-plate-feeding machines, and it has for its object to provide a device of this class in which the operation shall be continuous-that is, in which the nailplate-feeding barrels shall be so disposed that whenever the nail-plate is presented to the cutting knives or shears it shall have been automatically reversed, so as to present the nail-platein its proper position, and in which provision shallnioreover be made for regulating the distance to which the said nailplate shall be fed forward.

The invention consists, specifically, in a rotating cylinder equipped with any desired number ot' barrels or tubes, each of which is adapted to hold a nail-plate, and to feed it forward at stated intervals, the said barrels being so arranged in the cylinder as to receive a one-halt' revolution with each full revolution of the cylinder, thus presenting the nail-plate to the cutting apparatus at alternate angles at each operation.

Further, the invention consists in improved mechanism for feeding the nail-plates forward in the respective barrels and supplying a new nail-plate to each barrel when the plate previously contained therein shall have been exhausted.

Further, the invention consists in mechanism for automatically extracting the stumps remaining in the barrels when they shall have been fed forward to such an extent that no more nails can be successfully cut therefrom.

My invention, further and finally, consists in the improved construction and arrangement Fig. 1S is 'hereinafter described, also' serves 9 zae of details, which will be hereinafter fully de scribed, .andparticularl'y pointed out ini the claims.

In the drawings, A designates the frame of a nail-cutting machine to which my inventionhas been attached. In the construction of the said nail-cutting machinenoinvention' is here# in claimed, except as'to the parts which nec,- essarily co-operate with parts of my inven-5 tion.v

B designates the bed of the machine, which is provided with a rearwardly and upwardly extending arm, C, the upper end ot' which forms a turn-table, D, upon which is pivoted an arm or shaft, E, which constitutes the shaft ofthe main cylinder of the nail-plate-feedingil mechanism. The said cylinder is composed of the two'end disks, F and G, which serve to support the cylindrical body H, which lat# ter isprovided witha series of zigzaggrooves, I J, the former of which are formed 'or located diagonally with relation to the axis of the cylinder, while'the latter are parallel tothe said axis o1"'shaft It will also be noticed, by reference toFig. 9 of the drawings, that the junctions of the said grooves at the front end of the cylinder are somewhat enlarged, or, in other'words, that the grooves J have been partiallyeut away or beveled, so as to facilitatetheentrance of the opelatingpin, to be hereinafter described, in the several grooves," while,` on the other hand, the ends" of the diagonal groovesI have' been provided with recesses or 'indentations K, the "object' of whiehis to detain the-'saidoperating-pin in position untill the retrograde movement of the pitinan carrying the said operating-pin shall occur.y

L L designate the side pieces or up'right's which support the armpM, carrying thenai'l-v cutting knife N, which is operated by meansr ofan arm, O, secured or attached to the roekshat't P, upon which the said cutter-arm ismounted, the said armv being 'operated' bythe action fot'arod or pitman, Q, pivoted-eccen trical'ly' to a disk, B, mounted upo'none end of ashaft, S',"whicli isjournaled` insui'table bearings atone end ofthe frame 'AL This' shaft, which*mayibedenominated the main shaft?" ofthe machine, is provided atitsfopposite' end with a driving-crank",I band-wheel, or other device', bymeans of which 'it may be adapted to receive motion from any suitable motive" power. The said shaft,` as will be to'convey' niotion'to the several operating partsof the nail-plateifeeding meehanisin.

Tlie'oi'sksor ends F Got' the cylinder fH, to which reference has hereinrbefore been"n1ade", areeach'provid'ed withl a se'ries'of concentric andeq'uidistant openings, denoted', respective? ly', by'TandU, the'openingsTin th'e `rear disk,` orthat which faces the' nai l-cutt'ing machine,

disk, whileftheopeningsU in the front y Gyor that which' 'faces t-he nail-plat'elfeedin'g' mechanism, are located at some distance between the periphery of the disk and the axis of rotation of the cylinder. By this arrangement it will be seen that the pateholding barrels, which are accommodated, as will be presently stated, in the said perforations or openings, will always be held or retained at an angle'to Vthe axis of rotation, the object being to present the nail-plates, when they reach the anvil, at suchan'angle to the cutting knife or ably with' one arm, X, of a bracket, Y, which is secured to one side of the frame A; When thus secured, the 'cylinder may be freely revolved or operated bythe mechanisinwhi'ch forms partof this machine. When the said set-screw is loosened or detached, the nailplate-feeding cylinder may be swung out to oneside, thus affording free access to the nail# cutting part yof the machine, which may then be set or regulated as may be required.

Themain shaft S has near the end which' is provided with'the operating crank or wheel," a cam-wheel','Z.' the outer and inner sides ot' whiclrare' provided, respectively, with cain' IOO grooves A' and B', the former of which rel ceives a pin,v C', arranged in the end of a 1ongitudinally-movable slide, D', which carries atits front end one ofthe jaws, E', of the stu1np-ren1ovin`g nippers F', the other jaw of which, G', is pivoted to the saidjaw E', and

provided at the rear end of its shank with.;

an'outwardly-extending wedge-shaped or beveledprojection, H', working against a spring or guide, I', which is rigidly attached to a disk, J', mounted upon a bolt, K', which slides longitudinally in a slot, L', in the slide D',

which' forms practically the shank of the jaw E'ofthe nippers F'. The jaw E is provided Witha `longitudinal slot, L, moving-upona pinor stud, M', which is secured in the frame Aoi' the'machin'e.

.Upon the'inner end of the bolt K' is journaled on'e'arm, P', of a jointed lever, Q', the

lower'curved arm of whichis adapted to bear against the under side of the cani-wheel, to

which reference has been made above. p

The slide D'. which forms the 'shank of the main'jawof the nippers, is provided with a downwardly-extending arm, B', tothe lower endof whichthe curved arm of lever-'Q' is' pivotally connected. The front endsof the ,mainand' auxiliary' jawsv of the nippers` areV beingflocatedy near the"periphery 'of the said V disk,

provided',respectively, with a recess or indenr tation and-with a tooth or prong, so that they shall be adapted to catch andV retain any pro jecting portion of a nail-plate.

IIO

ISO

The shaft E, which extends through the cylinder H, is provided within the said cylinder with a bevel-wheel, S', a portion of the periphery of which is left smooth or free of teeth, the object being to cause the nail-platefeed ing barrels to remain stationary at that point at which the nails are cut from the plates. The said barrels are each provided at or near their inner ends with a pinion, T', meshing with or engaging the said gear-wheel, so that when the cylinder revolves, by mechanism which will be presently described, the said barrels shall receive a rotary motion, the proportions of the toothed portion of the gearwheel S with relation to the pinions upon thc barrels being so regulated that each barrel shall make a one-half revolution to each complete revolution of the cylinder. Mechanism, which will be hereinafter described, is provided whereby the nailplates shall be fed forward in their respective barrels during the revolution of thecylinder a sufficient distance to provide for a nail of the proper or desired width. A gage or arln extending upwardly and outwardly from the bracket Y serves to regulate the distance which the nail-plate shall be allowed to project, the said arm being simply in the nature of a stop, which, being rigid, will serve to push the nail-plate back into the barrel against the tension of the springs by which it is held, so as to cause it to project only exactly the required distance.

To the upper end of the rod or lever Q, above referred to, is pivoted a pitman, Y', extending forwardly, as shown, having at its front end a pivoted slide, Z', for which a suitable groove or guide is provided in the side piece, A2, ofthe machine. The said slide consists of an H-shaped frame or carriage, the upper side of which is provided with a liange, l", provided with set-screws C, by means of which the friction of the carriage against its bearings may be regulated. The said carriage is provided at its lower end with a downward ly-extending lug, D2, having an inwardly-extending pin, El, working` in the grooves of the revolving cylinder, to which motion is thereby imparted. The front end of the side piece ofthe frame which forms the bearing or guide for the carriage or slide Z', is connected adjustably to the main frame of the machine by means of bolts F2 G, the former of which is a horizontal bolt adjustable vertically in a vertical slot, H2, formed in a lug or arm which extends upwardly from the main frame, while the latter bolt is adjusted vertically in a lug, l, and adapted to form a support for the said side piece of the frame. lt will be observed that by the mechanism as described, when the machine is operated the forward stroke of the. pitman Y will carry the pin through one of the diagonal grooves in the cylinder, which is thereby caused to revolve a sufficient distance to carry the plate-holding barrel from the plate of which a nail has just been cut in an upward direction, and to carry the next barrel to such a position that the plate held therein shall be disposed upon the anvil in a position ready to be engaged by the cutting-knife. On the rearward stroke of the pitman Y the operating-pin will travel back through one of the grooves in the cylinder which is parallel to the shaft or axis, and the cylinder will thus remain stationary while the nail is being cut.

The box or receptacle in which the nailplates which are automatically fed by this machine are contained, is located at the front end of the frame, and it consists of a rectangular box, arranged at an angle orincline which corresponds with the angle or inclination at which the plate-holding barrels are arranged in the cylinder, with relation to the shaft or axis of the latter. The said box, which may be of a sufficient size to hold any desired number of nail-plates say,onehundred or moreis provided with a false bottom or follower', J", having a downwardly-extending shank or handle, Ki, moving in bearings which are formed by a frame, L2, which may be constructed and arranged in any suitable manner. The lower end ofthe said shank is connected pivotally with the front end of a lever, M2, fulcrumed to a bracket, N2, and having at its opposite end a weight, O2, by means of which pressure in an upward direction is exerted upon the follower in the plate-holding box. It will be seen that by this mechanism the plates are constantly forced in an upward direction against the slide, to be presently described, which forins the cover ofthe box or receptacle, and by the longitudinal motion of which the plates are successively fed from the box and into the plate-holding barrels.

I would here state that instead ofthe weighted lever a suitably-arranged spring, or any other suitable mechanism, may be employed for feeding or forcing the nail-plates upwardly in their box or receptacle. lt is also obvious that the follower in the said receptacle must be arranged at such an angle as to be parallel with the slide or cover.

The feeding slide or cover of the plate-holding box, which is designated by letter P2, is arranged to slide longitudinally in suitable grooves or guides formed for its reception near the upper edges of the sides of the said box, and in armsQ'i, which extend rearwardly from the same toward the cylinder, as clearly shown in the several figures of the drawings. The rear end of the said arms are provided with a bracket, Q, extending laterally and connecting them with the side of the frame. Between the ends of the said arms VQ2 which are nearest the cylinder H is arranged a plate or tloor, R2, which serves to support the nailplate which is rst to be fed to the machine. It is obvious that the cover must be ofsuch a length that the plate-holding box shall not at any time be uncovered, for the reason that if this were the case the plates contained therein would be liable to be displaced. rlhe said cover is provided with slots S'l and T2, in each of which is pivoted a dog or pawl, U2, having at its front end a transverse pin,- lug, or other IOC IIO

device, V2, whereby it shall be snppo'rtedfu'pon the upper side of the cover, and be prevented from dropping entirely through the slot in which it is pivoted. The under side of each of the pawls is provided with a downwardly-extending lug or tooth, NVZ, extendinga short distance below the under side of the cover. The tooth of the rear pawl will serve, when the slide is operated, to push the uppermost plate in the box in a forward direction or over upon the floor, to which reference has been made. At the Sametime the forward pawl will serve to push the plate already located upon the said iioor over into the plate-holding barrel which at the time registers with the said ioor.

The slide or cover is provided with a c`entral slot, XZ, in which is pivoted a lever or pitman, Y, the opposite end of which is piv-` otally connected with `a crank, Z2, extending downwardly from a rock-shaft, A3, mounted transversely in a pair of arms or brackets extending upwardly and frontwardly from the main frame of the machine, to which the said arms or brackets are suitably bolted or otherwise connected. rlhe opposite end ofthe said rock-shaft is provided with an arm or crank, B3, parallel to the crank Z2, and provided at its outer end with a pivoted lever or pitman,

G3, having at its lower end a laterally-projecting stud, D3, the functions of which will be presently set forth.

Secured to the inner side of one of the side pieces of the frame and extending in a forward direction under the lever C, is a flat spring, E3, the free end of which is suitably connected by means of a chain or cord, F3, with an arm, G3, extending laterally from a rock-shaft, H, which is journalcd longitudinally and in a somewhat inclined position (it being parallel, or nearly so, to the plate-holding box) in suitable bearings, the forward one of which is located in the bracket Q, which extends laterally from the arms QZ, and connects the said. arms with the side of the frame, as seen in Fig. 1.

The rear end of the shaft H" is provided with a laterally-extending arm or trigger, l, adapted to be engaged by the rear ends of the nailplateholding barrels, as Ishallnow proceed to describe. The said barrels, which are designated by letter J3, consist of tubular castings, the rear ends of which are beveled, as shown at K3, and the front ends of which are provided with bearings for a pair of diagonal and longitudinally sliding' rods, L", the for- Y ward ends of which are provided with nuts M3, between which and the ends of the barrels coiled springs N3 are interposed, so as to force the said rods automatically in a forward direction. The rear or inner ends of the said rods are pivotally connected to the pawls O, which are pivotedin the innerside of a sleeve, P3, which is arranged to slide longitudinally upon the barrel, which latter is provided with slots Q, adapted to accommodate the said pawls, and also the pawls R3, which are pivoted near the front end of the saidV sleeve, and which extend in a rearward direction` for ay considerable distance, extending even beyond the beveled ends of the barrels, so as tofclampf and hold the nail-plate contained therein.

S3 S3 designate pawlswhich are pivoted within the barrel proper, and which are actuated by springs T3, which serve to hold the said pawls in vcontact with the nail-plate, thus preventing `a retrograde movement of the same, the said springs being arranged, *aswillv be seen by reference to the drawings, to force the pawls in a forward direction, so that they shall simply rest upon the sides of the nailplate without interfering with the feed movement of the same.

The` beveled ends of the barrels are provided with broad llat springs, securely bolted thereto and bearing against the projecting ends ofthe nail-plates, so as to hold the latter securely in position while they are being acted upon by the cutting-knife.

The slide Z', which carries the pin by means of which the cylinder of the machine is operated, is provided with a forwardly-extending arm, U, moving in a suitable guide or recess in the side piece, A, of the frame of the machine. The front end of this arm is provided with a notch, V3, adapted to receive the stud D3, which projects laterally from the arm or pitman C" of the rock-shaft A3. This stud is normally accommodated in the recess or open-l ing V in the side piece, A2, of the frame, and it is held or retained in this recess by the action of the ilat spring E3, which normally supports the lower end of the pitman C3.

It will be seen that when the4 cylinder revolves, in case the sliding rods L3 project forwardly a sufficient distance to engage the trigger I3 the latter will 'be 'tilted in an up ward direction, thus oscillating the rock-shaft upon which it is secured. The arm atthe rear end of thev said rock-shaft will thus be depressed, depressing the free end of the flat spring and permitting thestud D3 to drop down into the notch V3 of the arm U3, The said arm on its rearward stroke will thus carry with it the pitman G3, thus oscillating the rocloshaft to which the said pitxnan is connected, and which is connected with and operates the slide or cover of the plate-holding box, The construction of the latter has already been described, and it will be seen that by this action a nail-plate is fed into the barrel which at the time registers with theiioor atthe front of the plate-holding box, while at the'same time another plate is fed from the box over uponv the said loor, so as to be ready-for a repetition ol' the operation. On the next forward stroke of the arm U3, the fiat spring,

IOO

having been released from the pressure upon the rock-shaft by means ofwhich it is oper.- ated, will force the lever or pitinan C3 in an upward direction, thus returning the stud D3 into the recess V", provided for its reception in the side piece, A2, of the frame.

The cam-wheel Z, upon the main shaft S of the machine, is provided,in addition to the cam-grooves A and B,with an exterior eccentric groove, lVa, adapted to engage the lower curved arm, X3, of the jointed lever Q of the stump-removing mechanism.

The shaft E, upon which the cylinder II revolves, is provided with a pair of adjustable disks, I t and B4, serving as guides for the flanges 0*, which are formed annularly upon the sleeves P3. The said disks are eccentric or cam-shaped, so that they shall serve to move the sleeves and the nail-plates held and carried by the said sleeves a sufficient distance during each revolution of the cylinder to cause a proper port-ion of the nail-plate to project, from which the nail may be cut.

D* is an arm extending downwardly from the shaft and carrying the barrels in a forward direction, so as to enable the pawls of the sleeves to take afresh hold upon the plates.

The operation of my invention will be readily understood from the foregoing description, taken in connection with the drawings hereto annexed, by those skilled in the art to which it appertains.

Vhen motive power is applied to the main shaft in the direction indicated by the arrows in the drawings,an intermittent revolving motion is imparted to the cylinder, while at the same time at each forward stroke of the pitman which operates the said cylinder the stump-removing pliers are carried in aforward direction,the said pliers being held in an open position by means of the wedge at the rear end of the pivoted jaw, which engages the spring or guide attached to the stationary or longitudinally slidingjaw. It should be stated that a spring is suitably arranged to close the said jaws automatically. It will also be seen that the rear ends of the nai1-plates are provided with notches adapted to be engaged by the front ends of the said jaws. Solong as the nail-plate grasped or engaged by the said nippers is solid, the said nippers on their backward movement will simply slide off the plate without affecting its posit-ion; but when only a small portion ofthe nailAplate remains, and the nippers are able to engage or enter the notch at the rear end of the latter, they will automatically close in the said notch,and will, by the rearward motion of the sliding jaw, serve to extract the stub. On the next forward motion the jaws are again forced apart by the mechanism described, thus releasing the stump and placing the nippers in position for a repetition of the operation. The beveled front ends or jaws of the plateholding barrels are provided with notches that will register with the notches in the rear ends of the nail-plates, so as not to interfere with the removal or extraction of the stubs.

The same operation of the main shaft which serves to operate the cylinder and the extracting mechanism, also serves, as hereinbefore stated,to operate the nail-cutting knife as well as the plate-feeding mechanism. The method of or mechanism for actuating thelatter,or for throwing it into operation at the proper time, consists simply of the rods L3, which extend rearwardly from the plate-holding barrels. It will be seen that the pawls O, which are pivoted to the inner ends of the said rods, normally rest upon the nail-plate contained in the barrel. Then the nail-plate passes beyond the said pawls, the springs N3 force the said rods in a forward direction,thus causing them to strike or operate the trigger, by means of which the plate-feeding mechanism is set in motion,as hereinbefore described.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- I. A nail-plate-feeding machine comprising an intermittingly revolving cylinder, having a series of barrels adapted to hold and feed the nail-plates to the anvil, in combination with mechanism whereby the said plate-holding barrels shall receive each a one-half revolution to each complete revolution of the cylinder, substantially as set forth.

2. In a nail-plate-feeding machine,the combination,with an intermittingly revolving cylinder, of a series of plate-holding barrels arranged within the said cylinder and having a limited longitudinal motion therein, the said plate-holding barrels being arranged at an angle to the supporting-shaft of the cylinder, substantially as set forth.

3. In a nail-platefeeding machine, the combination,with a supporting-shaft, of an intermittingly-revolving cylinder having a series of plate-holding barrels arranged at an angle to the said shaft or axis, and provided at their rear ends with pinions, and a gear wheel mounted upon the said shaft engaging the said pinions and being only partially toothed, so that a one-half revolution shall be imparted IOO to each of the plate-holding barrels with each complete revolution of the cylinder, the said barrels being stationary at the point at which the nail-plates are exposed upon the anvil, substantially as set forth.

4. The combination,with a nail-cutting machine having a forwardly-extending arm terminating in a disk or turn-table at its upper end, of a shaft or axle mounted pivotally upon the said turntable and carrying an intermittingly-revolving cylinder provided with a series of plate-holding barrels,and mechanism for feeding the plates contained in the said barrels to the nail-cutting mechanism, substantially as set forth.

5. In a nail-cutting and plate-feeding inachine, the combination,with the frame having an arm or bracket upon which is pivotally mounted a shaft carrying a cylinder provided with a series of plate-holding barrels, of a bracket extending laterally from one of the sides of the frame and adapted to sustain the front end of the pivoted shaft, said bracket being also provided with an upwardly-extending lateral guide, serving as a gage to regulate the distance to which the nail-plates shall be allowed to project, substantially as set forth.

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r barrelsarranged inthe' saidI cylinder atanangleto the said shaft or axis, plate-feeding Sleeves arranged to slide upon'the ysaid barrels, and a pair of cams or eccentric disks mounted adjustablyl upon the said-shaft', substantiallyfas set forth.

7. Inafiiail-platefeedingfmac`hine,thecomsisti'ng of tubular castings havinglongitudinalV slots, of the annularly flanged 'sleeves mounted to slide upon Vthe said barrelsand providedfw-ith springpawls adapted toengagethe plateslco'ntainedin thesaidfbarrels and-'feed them `towardftlie"cutting mechanism, substantially as set fortlii 8: Thecombinatiomwiththe platelliolding barielshaving longitudinal" slotsandl provid-Y 'ed with the beveled ends,as described, of the longitudinally sliding ann ularlyiiang'd sleeves havingspring-'paw-l's adapted to hold andi feed the nail-plates'` cox'it'ainedV inthe said barrels-and provided-with forwardly-extendi'ngpivoted jaws, and springsfsecu'red to the beveledffrontend's of the barrels and acting` against lthesaid pivoted jaws,-whi chl are thereby compressed upon the nail-plate,fsubs'tan tially as set forth. l

9.V The herein-described'cylinder,co1nposed of theI endpieces having bearingsy o1" openings'for the plate-holding barrels,a'n`d aveylindric'al body provided withgrooves which arealternately parallel'to-andat' airangle to the 'shaft orV axis of thecylind'er, the front ends ofthe straight or parallel grooves=being cut) away so as toafford 'access for theoperating-pin, andv the diagonal grooves being provided with recesses-or indentations tio afford a rest for the said'operating-pin until it'sreturn-stroke, substantially as set forthi 10. l'n a nail-plate-'feeding machine, the combination, with arevolving cylindercarrying aV series of" plate-holding barrels, of mechanism for automatically supplying nailplates to the said barrels whenfthe plate contained in either barrel shall have been eX- liausted,-substantially as set-forth.

ll1. In a` nail-plate-feeding machine, the

combination, with a series of plate-holding I slide or cover moving longitudinally Vand provided with pawls or d ogs adapted, respectively,

ltobforcea plate from the boX onto the floor in rcar'of the same and from the said floor into one of the plate-holding barrels, and suitable fop'crating mechanism, substantially' as setV lfort-h'.

bination, with the'plate-holdingbarrels, co'n'- 1 ceptacle, the sliding'cover of thclatter provided 1a The @bmbinauon ofthe plate-holding vrewi'thdogsor pawlsarock-shaftarranged'trans- -ve'rsely'to the said slide and providedwith-'an theI said rock -shaft provided with a pit'nian Arestingupon ai'lat spring andprovided'with alaterally'-e'Xtending stud accommodated in a'rec'ess in the sidey of the frame of the-machine, a longitudinally-reciprocating arm, having* a notch adapted to receive the said stud; and-a's-uitably-operated trigger adapted to release the said spring, so as to permit the said stud to drop into the notchr of the longi- =tudinally-reciprocatingarm, whereby the cover or slide of the-'plate-holding bo`x` may be operated, 'substantially-as and for the purpose set forth.

14". The combination of the plate-holding receptacle, the slideor cover of the same hav- Aing' dogs or-pawls, operatingvmechanism for tlie said slide, substantially as described,- a iiatsp'ring arranged to hold the said operating mechanism out of gear, a longitudinal rock--shaft'having at its rear end an arm connected with the said flat spring, andhaving at itsopposite end a laterally-extending arm or trigger, and the cylinder having a scriesof plate-holding barrels provided with longitudinally-sliding rods forced in a forward direction by means of suitably-arrangcdsprings, and connected at their inner ends to pivoted pawl's, w-hich normally rest upon the nailplate'contained in the' barrel, whereby when -such nail-plate shall have been-exhausted the pawls willcome together and the rods be forced in a forward direction, so as to-e'ng'age the trigger and set the feed-slide in motion,

substantially as set forth.

'15.- In a nail-plate-feeding machine, the combination, with a revolving cylinder haviiig a series-of plate-holding barrels arranged atan-angle tothe shaft ofc the said cylinder and adapted to receive each a one-half revolutionito each-complete revolution of the cylinder,` of the plate-feeding mechanism comlprising a' box arranged atfpthe front end of saidcylinder and in a line with the barrel which= at the time is uppermost in the said cylinder, and mechanism actuated automatically byl the mechanism which operates the said cylinder for the purpose of supplying a IOO fresh; nail-plate to each cylinder when the vplate contained therein shall have been eX- hausted, substantially as set forth.

16. The combination,with anail-plate-feeding machine having mechanism whereby the plates are fed automatically to the plate-hold ing barrels, of mechanism for automatically extracting the stubs from the said barrels, substantially as set forth.

17. The combination, with an intermittingly-revolving cylinder, of a series of plateholding barrels having beveled front ends provided with notched jaws adapted to register or correspond with notches formed at the rear ends of the nail-plates, substantially as set forth.

18. A stub-extractor for nail-plate-feeding machines, consisting, essentially, of apair of nippers or pliers adapted to be closed automatically by a .suitablyarranged spring, the jaws of the said nippers being provided at their front ends, respectively, with a recess or indentation, and a tooth fitting in the said recess, substantially as set forth.

19. The combinatiomwith a nail-plate-feeding machine, comprising an intermittinglyrevolving cylinder having a series of plateholding barrels adapted to receive each a onehalf revolution to every full revolution of the cylinder, of an automatic stub-extractor comprising a pair of nippers adapted to be closed automatically by the action of a suitably-arranged spring, the said nippers having a longitudinally-sliding movement, substantially as and for the purpose set forth.

20. The combination of the cylinder carry ing the plate-holding barrels, with an automatic stub-extractor comprising a longitudinally-reciprocating slide having a downwardly-ext-ending arm and carrying at its front end one of the jaws of the extracting-nippers, an auxiliary jaw connected pivotally to the main jaw and adapted to be automatically closed by the action of a suitably-arranged spring, and having at its rear end an outwardly-extending beveled projection, a bolt movable longitudinally in a horizontal slot in the shank of the main jaw, a spring or guide secured to the outer side of the said bolt and adapted to bear against the beveled projection upon the shank of the auxiliary jaw, and a jointed lever connected pivotally to the inner end of the said sliding bolt and having its lower curved arm connected pivotally to the bracket extending downwardly from the shank of the main jaw and bearing against an eccentric cam formed upon a disk which is secured upon the main shaft of the machine, substantially as set forth.

21. In a nail-cutting and plate-feeding machine,the combination of a plate-holding receptacle, an intermittingly-revolving cylinder carrying a series of plate-holding barrels adapted to receive each a one-half revolution to each complete revolution ofthe cylinder, mechanism for feeding the nail-plates from their receptacle into the plate-holding barrels when the plates contained in the latter shall have been exhausted, mechanism for automatically actuating the said plate-supplying mechanism, mechanism for feeding the plates contained in the barrels toward the anvil of the cutting mechanism, a gage or guide arranged to regulate the distance to which the nail-plates shall be allowed to project, the stub-extracting nippers arranged to be operated automatically for the purpose of extracting the stubs from the plate-holding barrels, mechanism foroperating the said stubextractor or for throwing it into operation automatically when the plates shall have been exhausted to such an extent as to render the removal of the stubs necessary, and the nailcutting mechanism, all constructed, arranged, and operating substantially as and for the purpose herein shown and specified.

In testimony that I claim the foregoing as my own I have hereunto aiiixed my signature in presence of two witnesses.

VILLIAM JAMES GLADISH.

I'Vitnesses:

S. F. IVooDING, GHARLEs HANEY.