US481863A - g-unston - Google Patents

Description

5 Sheets-Sheet I. B. M. GUNSTON.

BOX NAILING MACHINE.

Patented Aug. 30,1892. 2]' l ll Il l I E 1 1 1r i (No Model.)

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s BOX NAILING MACHINE. No. 481,863. Patented Aug. 30, 1892.

(No Modal.) f 5 Sheets-Sheet 4. B. M. GUNSTON. BOX NAILING MACHINE.

No. 481,863. Patented Aug. 30, 1892.

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B. M. GUNSTON.

B0X NAILING MACHINE.

No. 481,863. Patented Aug. 30, 1892.

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BYRON M. GUNSTON, OF OSWEGO, NEI/V YORK, ASSIGNOR TO THOMSON KINGSFORD, OF SAME PLACE.

BOX-NAILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 481,863, dated August 30, 1892.

Application filed March 5, 1892. Serial No. 423,900. (No model.)

T0 all whom t nca/y concern.'

Be it known that I, BYRONV M. GUNs'roN, a citizen of the United States, residing at Oswego, in the county of Oswego and State of New York, have invented certain new and useful Improvements in BoX-Nailing Machines, of which the following is a specification.

My present invention relates to that part of nailing-machines which delivers the nails from a pan or receptacle separately in proper position to be operated upon by thehammer mechanism.

The object of my invention is to render the mechanism entirely automatic and to so organize the apparatus that nails may be fed to the hammers or punches evenly, regularly, and without clogging the moving parts.

In the accompanying drawings, Figure 1 is a plan view of a nail-feeding machine embodying my improvements. Fig. 2 is a vertical se@- tion on the line 2 2 of Fig. 1. 2 is a detail View showing the connection of the pan-operating mechanism With the hammer cross-head. Fig. 3 is a vertical section on the line 3 3 of Fig. l. Fig. 4 is a similarsection showing the oscillating nail-track in its elevated position. Figs. 5 to l0, inclusive, are on an enlarged scale. Figs. 5 and 6 are detail plan views showing particularly the cut-olif mechanism. Fig. 7 is another detail View of the cut-off mechanism. Fig. 8 is a vertical transverse section on the line 8 8 of Fig. l. Fig. 9 is a detail view in section on the line 9 9 of Fig. 4. Fig. 10 is a perspective view of part of the casing of the cut-off mechanism.

The frame A may loe of any construction suitable to support the dilerent parts of the mechanism.

The pan or receptacle B, into which the nails are dumped in a miscellaneous mass, is provided at its rear lower end with pivots h, journaled in standards a, adjustably secured to the frame A by means of set-screws a, extending through slots b in the standards a. The nail-pan is divided by a transversely-arranged partition B', the lower end of which is located a short distance above the bottom. That portion of the pan in front of the partition B is divided, as shown in Fig. l, into compartments C C', dic., by partitions @,which,

as shown, are pivotally connected to the bottom of the pan by screws c at their front ends. The rear ends of the partitions c are provided with screws c2, extending through slots c3 in the partition B', and these screws carry clamping-nuts c4. By this means the partitions c may be set at different angles, and thus the quantity of nails delivered to the different compartments may be varied.

As before stated, the rear end of the nailpan may be adjusted vertically by means of its adjustable standards a, and by this means the inclination of the pan may be varied to regulate the quantity of nails fed from it. The front end of the pan is supported on springs d, surrounding bolts D, extending through a cross-piece A', mounted on bracket A2 of the frame. The springs CZ project a short distance upwardlyfrom the bolts and rest on the cross-piece A. The lower ends of the bolts are provided with adjustingnuts d2, by means of which the bolts may be adjusted vertically toward and from the upper ends of the springs. Any desired number of these supporting devices may be employed.

The nail-pan is operated by a rod E, carrying at its upper end a spring e, which may be adjusted by means of nuts e. The lower end of the rod is connected to an angle-iron F, secured to the cross-head F of the hammer-actuating-mechanism. The arrangement is such that as the hammer-actuating mechanism is reciprocated vertically the rod E is reciprocated and imparts avertical oscillation or vibration to the nail-pan. The vibration of the pan may be regulated by adjusting the connection of the rod E with the angle-iron F. It will thus be seen that I have provided various ways for regulating the supply of nails from the pan. First, the vertical adjustment at the rear end of the pan; second, the adjustments of the supports D; third, the adjustment of the spring e of the rod E, and, fourth, the adjustment of the connection of the rod E wit-li the angle-iron F.

It will be understood that it' the springs d project only a short distance above the bolts D the pan B as it descends will strike the bolts with greater force than if the springs project a greater distance above the ends of IOO the bolts. These several devices may be nicely adj usted or regulated to supply the nails at the desired speed, and the quantity of nails fed through the different subdivisions of the nail-pan may, as before explained, be regulated by adjusting the partitions c. It will be understood that the springs d tend to continue the vibration of the pan, and thus tend to shake the nails down the incline should they tend to stop.

In front of and below the nail-pan is a hopper G, supported on the bracket A2 of the frame and corresponding in width to the width of the nail-pan and having its bottom subdivided into a series of V-shaped troughs g, corresponding with the subdivisions of the nail-pan. any suitable way with sloping sides inclining from their upper ends downwardly, and preferably at the lower ends of the troughs I arrange blocks G, which tend to guide the nails to the bottoms of the troughs and prevent their lodging against the front end of the hopper or from finding their way out of the hopper, except in the manner hereinafter described.

Retarding devices for preventing the nails from being delivered too rapidly to the hopper or for preventing them from jumping to the lower end of the hopper are mounted immediately in front of the pan on verticallyadjustable standards H.

a series of retarders I-l, each shown as consisting of a plate 7L', which when the retarding device is in its normal position is inclined from the shaft h downwardly to the trough, on which it rests, as shown in Fig. 8.

Aplate h2 proj ects upwardly and rearwardly from the shaft 7L and deiiects any nails that might tend to jump over the shaft onto the plate h. The plate h is suitably shaped,as shown in Fig. 8, to conform to the bottom of the trough on which it rests.

The retarding devices at the ends of the hopper are provided with end pieces h3, which will prevent the nails from falling out at the sides of the hopper or pan. The retarding devices may be mounted on the shaft h in any suitable way. I have shown in the drawings a convenient way for securing them, which consists in cutting away the ends of the plates h2 and turning these ends around the shaft; but other securing devices may be employed.

The retarding devices may be adjusted to any desired angle by the vertical adjustment of the standards Il, and the nails as they are delivered from the nail-pan are deflected to the upper ends of the troughs, so that they are made to traverse practically the ent-ire length of the trough, instead of going immediately to the lower ends. rlhe bottoms of the several troughs are slotted from end to end to permit the oscillating nail-tracks I to reciprocate vertically through them. These nail-tracks are slotted longitudinally at t' and These troughs may be formed in.

The standards are' connected by a shaft h, on which are pivoted are beveled at c" from their outer edges inwardly toward the slots, being thus adapted to guide the nails to the slots, into which they fall with their points downward, and are suspended therein by their heads. The width of the slots for different sizes of nails maybe varied in different ways--for instance, by employing a removable piece i2 at one side of the slot.

The oscillating nail-tracks are mounted on a shaft J, supported in the main frame in any suitable way, and may be held in place by collars. The front ends of the tracks carry curved guard-plates I', which reciprocate vertically between the end blocks G and serve to prevent nails from falling out in front of the oscillating tracks while they are being operated. Each track is actuated by means of a rod K, secured to a bracket K adjustable by means of set-screws 7a', working in slots 7a2. rlhe lower end of the rod K is connected to the angle-iron F of the hammeractuating cross-head F'. Between a nut los on the rod and the angle-iron is interposed a spring 7a4, and the lower end of the rod beyond the angle-iron carries a nut h5. As the cross-head F is reciprocated vertically, a vertical oscillation is imparted to all the tracks. The yielding connections between the angleiron and the rods K are for the purpose of preventing a strain on the mechanism should the cut-off devices become clogged, as willbe hereinafter explained. The upper rear ends of the oscillating tracks connect with stationary tracks L, which incline downwardly from their front ends to the cut-off devices. The connection between the movable track and the stationary `track is such as to provide a close joint at all times, the front face of the stationary track being curved to correspond with the curved rear end of the movable track, as clearly shown in Fig. 2. 'lhe oscillating tracks are provided with heels I3, which abut against the under sides of the stationary tracks. Thus the downward move` ment of the tracks is limited, and when at their lowermost position the tracks proper or nail-receiving portions thereof are inclined, as shown in Fig. 2, to permit the nails to slide downwardly over them by the force of gravity. The stationary tracks L project a short distance beyond the rear end of the hopper and into the slotted troughs thereof. It is therefore necessary to close the slots immediately above the front ends of the stationary tracks. To do this, I employ hinged gates M, which rest by gravity at their lower front ends on the front ends of the stationary tracks when the oscillating tracks are depressed, but which are raised by theoscillating tracks when they are elevated. The front ends of the gates are notched at m to permit the heads of the nails to pass when the tracks I are elevated and the nails are sliding downwardly therefrom. The depth of the slots in the tracks is a little greater than the length of the nails; but when the nails are suspended by their IOO heads they are free to move without touching bottom. Headless nails fall through the slots and pass out at into any suitable receptacle.

The cut-oit devices N are located at the lower rear ends of the stationary tracks. There is a cut-ott for each one of the tracks. As the cut-oft devices, which I employ are all alike, the description of one of them will be sufiicient. A base-piece O is employed for carrying the cut-off mechanism of all the tracks. This base-piece is provided with upright boards O', grooved at -0 to receive the upright removable board p, to which the top or cover P is secured. The cover and its vertical board p, in connection with the uprights O', constitute a casing for the cut-oft mechanism, and as the covers may be readily removed the cut-ott mechanism may be easily gotten at and repaired, if necessary.

The cut-off devices for each track are shown as consisting of a finger Q, carried by a transversely-sliding block Q', pressed in one direction by a spring q, held in place bya stud q' on one ofthe uprights O. The finger may be adjusted by means of the screw q2, which secures it to the block Q'. The block is movedtransversely against the force of the spring q by means of an inclined bar R, pivotally connected to the oscillating track I. The rear end of the bar engages an inclined end of the block Q', and it Works through a suitablyshaped opening p' in the upright p and against one of the vertical boards O. The block is formed on its front side with a recess g3, arranged immediately over an opening o in the cross-piece O, beneath which is arranged a tube S, which may communicate with tubes or devices which carry the nails to the hammer. The finger Q is formed with an enlargement y, which projects rearwardly a short distance into the recess Q3. This enlargement gradually merges into the point or edge of the linger, and as the finger is reciprocated the nail, which is separated from the others in the track, is moved backwardly into the recess over the opening 0, through which it falls into the tube S. The finger reciprocates transversely through a recess Zin the rear end of the track, and the track immediately in front of the iingeris provided with inclined diverging edges Z. Each track is cut away at Z2 between its upper and lower ends andimmediately below this cut-away portion is perforated at T. The trackimmediately above the perforation T overhangs the perforation to a slight extent, as shown in Fig. 4. As the nails are fed down the track they jump across the perforation T to the lower end ofthe track and stop close to the iin gers or cut-offs; but should more than enough nails be supplied to the lower end ot' the track and should they till the track from the fingers or cut-offs to the perforation T the nails subsequently fed down the track will fall through the perforation into a receptacle provided therefor. By this means the clogging of the tracks is prevented. Most of the nails are fed down the track in regular order, suspended by their heads. Occasionally, however, nails will pass the gate without assuming avertical position or being suspended by their heads. Should this be case, they will fall from the tracks over the inelines Z' before reaching the cut-oft devices. The width of the slot in each stationary track may be made adjustable by means of a removable side piece L', corresponding with the removable side piece i2 in the oscillating track, thus allowing nails of different sizes to be used.

The operation of the mechanism has been indicated in describing its construction. Briefly stated, the operation is as follows: The nails are dumped in a miscellaneous mass into the rear end of the nail-pan, and as the nail-pan is oscillated or vibrated the nails are fed downwardly against the dellectors or retarders, which deliver them to the upper ends of the troughs in the hopper G. The nails slide down the troughs and are detlectedinto the slots t' in the upper ends or edges of the tracks I. Defective nails fall through the slots and out through the openings x. A por.

tion of the perfect nails are suspended by their heads in the tracks when the tracks are in their lowermost position, and as the tracks are raised those nails which are not suspended by their heads pass to the sides of the tracks until the track falls again, while the nails in the slots pass by the gates M onto the inclined stationary tracks L', down which they slide, jumping the openings T, and. are arrested at the cut-oft devices. As the cutoff knives are oscillated the nails are picked off separately and delivered through openings o and tubes S. Vhen the knives are withdrawn, the lowermost nail rests against the block Q', as shown in Fig. 5, and as the knife moves across the path of the track it separates the lowermost nail from the others and delivers it through the opening o. The mechanism is so timed and operated that the nail-pan is intermittently vibrated and the oscillating nail-tracks are simultaneously actuated.

The cut-off devices are operated from the oscillating nail-tracks,`and the connection between the nail-tracks and the reciprocating cross-head of the hammer is yielding, as before described, so that should the cut-off mechanism become clogged there is no undue strain which would tend to break any parts of the apparatus.

I claim as my invention l. The nail-pan herein described, provided with partitions pivoted at their lower ends and having devices at their front ends for securing them in the desired adj usted positions.

2. The nail-pan herein described, provided with partitions pivoted at their lower ends to IOC the bottom of the pan and adj ustably secured at their upper rear ends to a slotted crosspiece, substantially as described.

3. The combination of the nail-pan, the bolts carrying springs, on which the nail-pan is supported at its front end, and means for vibrating the pan.

4. The combination of the nail-pan, the bolts carrying springs, on which the nail-pan is supported, and the vertically-reciprocating rod carrying a spring at its upper end, bearing against the nail-pan.

5. The combination of an inclined nailpan, means for oscillating it vertically, an inclined hopper in front of and below the nailpan, and adjustable retarders interposed between the hopper and the pan to deflect the nails to the upper end of the inclined bottom of the hopper.

G. The combination of the nail-pan, the hopper, the retarders having the downwardly and rearwardly inclined plates and the upwardly and rearwardly inclined plates, and a shaft on which the plates are mounted.

7. The combination of anail-pan, a hopper having a forwardly and downwardly inclined bottom and located below the nail-pan and in front thereof, the oscillating nail-tracks working vertically through the hopper and inclined forwardly and downwardly at the end of the downward stroke, the stationary nailtracks, with which the oscillating rearwardlyextending downwardly-inclined nail-.tracks connect, and cut-o mechanism at the lower ends of the stationary tracks.

8. The combination of the hopper, a V- shaped trough therein, the oscillating track working vertically through the trough, and the hinged gate notched at its lower end and bearing on both tracks and which is raised and lowered by the oscillating track.

9. The combination of ahopper having an inclined bottom, a vertically-oscillating track therein, and a guard-plate l', carried by the lower end of the track and extending upwardly therefrom, for the purpose specified.

l0. The combination, substantially as set forth, of an inclined hopper provided with a series of V-shaped troughs, an oscillating track, the inclined blocks at the lower ends of the hopper on opposite sides of the track, the upwardly-projccting guard-plate I between the blocks, and the gate hinged to the upper end of the hopper and bearing against the track.

ll. The inclined stationary track herein described, having the opening T, through which superfluous nails are delivered, connected at its upper end with means for feeding nails to the cut-off mechanism, in combination with cut-off mechanism at the lower end of the track, having devices for supporting a number of nails between the opening 'll and the lower end of the track, and a finger for picking off one nail at a time from the nails thus supported, substantially as set forth.

12. The combination, substantially as set forth, of the stationary track, the oscillating track, means for operating the oscillating track, the transversely-reciprocating springpressed block carrying the cut-oft finger, and connections between theoscillating track and the spring-pressed block for moving the block against the force of the spring.

13. The combination of the finger-carrying spring-pressed block, the grooved uprights, between which the block is mounted, andthe top piece or cover provided with an upright board working verticallyin the grooves.

14. The combination, with the verticallyreciprocating cross-head, of cut-ott devices, the vertically-oscillating track, connections between the track and the cut-oit devices, by which t-he latter are operated, a rod adjustably secured to the track, and a yielding connection between the rod and the cross-head.

l5. The combination of the hinged nail-pan, the hopper, the oscillating tracks extending into the hopper, the stationary tracks, the cut-off mechanism, the hammercarrying cross-head, a rod adj ustably connected thereto for oscillating or vibrating the nail-pan, connections between the oscillating nailtracks and the cut-oit mechanism, rods connecting the oscillating nail-tracks with the hammer-carrying cross-head, and springs carried by the lower ends of the rods.

In testimony whereof I have hereunto subscribed my nam e.

BYRON M. GUNSTON.

vVitnessesz H. L. IIoWE, WILLIAM V. BURR.

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