US1156109A - Nailing mechanism for box-machines. - Google Patents

Description

W. X. STEVENS.

NAILING MECHANISM FOR BOX MACHINES.

APPLICATION FILED SEPT. I2. I9II.

1,156,109. Patented OCI. 1,2,` 1915.

rrp erreA aa orme g WILLIAM X. STEVENS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR T ELLA L. BARTON,VOF JACKSONVILLE, FLORIDA.

Specification of Letters APatent.

Patented oet. 12, isis.

Application filed September 12, 1911. Serial No. 648,913.

To all whom t 11mg/ concern:

Be it known that I, WILLIAM X. STEVENS, a citizen of the United States, residing at 1Washington, in the District of Columbia, have invented certain new and useful Improvements in Nailing Mechanism for Bon- Machines, of which the following is a specification. i

- This invention relates to box making machines,`particularly the parts which coperate to do the nailing. Its Vobject is to provide receptacles for holding nails in bulk, means for separating out the number of nailsrequired for each boX and means'for guiding these separate nails each to its right place for use, means fori'guiding each nail to enter straight into the box` parts, and

lmeans for driving home at one movement the whole number of nails selected. l To this end my invention consists in mechanism for automaticallv nailing boX ends hereinafter more fully described, reference being had to the accompanying drawings in whichr Figure 1 represents anail hopper partly in side view, partly broken away and partly in transverse vertical section, Fig'. 2 is a front end view on va"'smaller Iscale of the hopper partly brokensaway., Fig. 3l is a top view of one nail deliveryy on. a large scale,

Fig.' l shows a transverse sectiony of one@ slide-way at line :c Fig. 1, Fig. 5 shows a like section at line y. Fig. 6 is a side view of two nail chucks, and Fig. 7 shows a transverse vertical section at line z, Fig. 6.

Numeral 8 represents a nail hopper, which comprises a boX with sheet metal sides and a thicker bottom, 9, which inclines upward at 10, to carry the nails up to the top of the rails l1, and at the rear end the bottom is like a series of roofs, 12, inclined laterally to slide nails down into the grooves 13, between the rails 11. The hopper is journaled on a shaft 14, to be tipped backward and forward every time a box is nailed. This is to tumble the bulk of nails to and fro and work them into the grooves 13, where they are caught by their heads on the side rails 11. A guard is hung at 16 over each groove 13 to swing down upon-the rails at each backward tip of the boX to keep in the groove all nails that have gathered there, and to swing upward as shown in Fig. 1 to let more nails pass lforward. At the delivery end of the rails 11, a picker boX 17 having a shoulder 18, against whichthe .forward nail is stopped when a row of nails slide down the groove13, is

mounted in bearing 19 to slide to and fro across the ends of the rails. The forward movement may be actuated by a lever 2() which is suitably connected for operation by the machine, and the return movement is made by a spring 21. A picker 22, ateach groove 13, is rigidly fixed to the picker bar 17, to pass at each forward movement, behind the body of the foremost nail, and Ywhen the delivery 23, through the bar 17, arrives over the throat 24 in the 'cross beam 25,

the nail will have been wedged along the ,Y

passage 26 into the delivery 23 when it will be free to fall into the throat 24,- and the pipe `27 to be conducted to the nail-chuck 28. The

lever `has a quick forward and back movement and the picker bar is immediately rel turned to its normal position, see Fig. 1, for another nail tocome against the shoulder 18. Butnow the wholevhopper will be tipped backward and forward again to insure the gathering of nails in the slots and to knock loose any bunches that may be wedged or tangled. To insure the light nails coming forward to the picker I provide a pounder which comprises a weight 29, mounted for radial adjustment on an arm 30 that is journaled upon the shaft 14: to oscllate with the hopper. `Vhen the hopper tips backward the lug 32 thereon carries the pounder until the hopper -is at the end of its movement, when the pounder will be carried past its center of gravity over the shaft 14, and will fall backward heavily upon the lug 31. When the hopper tips forward the lug 31 carries the pounder forward past center and then it falls against the lug 32. T his pounding helps to jar loose any nails that may be stuck in the passages and insures the fore most nails coming clear down against the bar 18 to be engaged by the pickers.

Each nail chuck comprises two jaws 28 hung in a fixed chuck guide 33, each jaw upon the upper edge of a bar 34. Each jaw is slotted to straddle its bar as shown in Fig. 7 and the lower end of the slot Vis wide to permit the jaws to swing back and springs 35 press the jaws home upon the bars 34, as shown. At the upper end of the jaws the passage 36 between them is large enough to freely admit a nail head, then for about three quarters of the length of a nail the passage is barely large enough ward.

to admit the body of the nail freely and for a short distance at the lower end the passage is nearly closed to prevent the nail dropping through. A plunger 37 for each nail passage is carried by a vertically reciprocating hammer head, not shown). A face plate 3S perforated at 39 to permit the pas* sage of a. nail and the plunger isrigidly secured upon the chuck guide 33 to prevent roughness of the box lumber from interfering with the action of the jaws 2S. A nail comes down the pipe 27 into the passage 36,v

the plunger comes down and drives the nail, causing it first to wedge the jaws apart at their lower ends, so that when the nail starts to enter the box, which is close up toy the plate 38, the nail will be guided both by its head and point to enter straight, and when the head comes into the narrow passage between the jaws 28, they are wedged outlt would be practically impossible to drill a small hole through the whole length of the chuck guide 33, correspond ing to the width of the box to be nailed, to admit a pin on which chuck jaws could be hung at the point corresponding to the upper edge of the bar 3i. rl`herefore this bar is substitutedas a hanger for the jaws and is rigidly secured to the guide 33 by pins 40. By swinging the guards l5. over backward they will prevent nails from going forward to the pickers if by any oversight the machine is started up when boxes are not to be nailed.

Having thus fully described my said invention, what l claim as new and desire to secure by Letters Patent, is:

l. In mechanism for automatically nailing boXes, a hopper hung to be tipped backward and forward and having rails in pairs to receive nail bodies between them, and standing above the level of the bottom, the bottom having inclined portions rising rearward higher than the said rails and slanting roof-shaped transversely to the tops of the rails, and guards pivoted above each pair of rails in front of the elevated rear portions thereof and arranged to rest upon the tops thereof and hold the nails collected in the slots in front thereof during the upward tilting of the front of the hopper, substantially as set forth.

52. A nail feeding mechanism comprising an oscillatory hopper havinga bottom formed with a series of parallel slots and inclined portions rising vrearwardly and above said slots and slanting roof-shaped transversely tol said slots, and a reversible guard pivoted above each slot in front of the elevated rear portions and adapted to hold the nails collected in said slots in front thereof during the oscillation of said hopper when in use, any one or more of said guards adapted to be osoillated at any time into such apposition as to prevent the passage o-f nails alongl their respective slots during the oscillation of said hopper when such slots are-not i-n use, substantially as set forth.

ln witness whereof, I have hereunto set 7 my hand and seal at lVashington D. C. this 26th day of August, A. D. nineteen hundred and eleven.

E. W. BRADFORD, F. A. CoLFoRD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

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