US1468392A - Table for box-nailing machines - Google Patents

Description

Eepit. i8 1923.

. G. D. PARKER TABLE FOR BOX NAILING MACHINES Original Filed Jan. 5, 1922 3 Sheets-Sheet 1 Sept. 18,1923, L46892 I G. D. PARKER TABLE FOR BOX NAILING MACHINES Original Filed Jan. 5 1922 3 Sheets-Sheet 2 Sept. 18 1923.

G. D. PARKER TABLE FOR BOX NAILING MACHINES Original Filed' Jan.

5 1922 3 SheetsSheet 3 dtlaivzeyg,

Patent Sept. 118, 1923.

GEORGE D. PARKER, OF RIVERSIDE, CALIFORNIA.

TABLE FOR BOX-NAILING MACHINES.

Original application filed January 5, 1922, Serial No. 527,065. Divided and this application filed July 25, 1922. Serial No. 577,378.

To all whom it may concern.

Be it known that I, GEORGE D. PARKER,

. a citizen of the United States, residing at Riverside, in the county of Riverside and State of California, have invented certain new and useful Improvements in Tables for Box-Nailing Machines, of which the following is a specification.

The present invention is a division of my application for Letters-Patent of the United States, Serial No. 527,065, filed January 5th, 1922, and relates to machinery .for the nailing of the sides and bottom pieces or sh0ok material to. the end pieces of a box for the production of a complete box withthe exception of the cover pieces, for use in the shipment of products generally; the invention relating more particularly to the provision of means whereby lateral and vertical adjustment may be given to the nailing bases of the apparatus so as to adapt the same for the manufacture of difierent sizes of boxes.

In the operation of box nailing machinery as at present constructed, the action of the nailing mechaninn is such that the nails employed for uniting the sides and bottom pieces to the end pieces of the box are each driven a 'iven distance into the surface of said sides and bottom pieces irrespective as to whether the pieces are formed of oversize or of undersize materialtby the expression oversize or undersize is 'to be understood the thickness of the pieces), with the result that where the material is undersize the nails are driven to such a depth within the pieces as to give little or no resistance to the breaking ofi or stripping of the said pieces after the formation of the box, and where oversize material constitutes the side and bottom pieces they are driven into the wood to a distance considerably. beyond that required to unite the said pieces to the end pieces of the box.

The object of the resent invention is the production of a nai 'ng apparatus wherein the nailing bases are so arranged as to permit of lateral and vertical adjustment being imparted thereto with respect to the nailing mechanism with which they co-operate to vary or adjust the osition thereof to ac c'ommodate' the mac 'ine or apparatus for the nailing of boxes of varying sizes and within certain limits, as, for instance, any

boxes that come within the following dimensions can be made on a single apparatus,

viz :-boxes having a maximum length of should be had to the accompanying sheets of drawings, wherein Fig. 1 is a front elevation of an ordinary box nailing machine with my improvements applied thereto. 7

Fig. 2 is a side elevation illustrating one series of adjustable nailing bases with means for carrying the same.

Fig. 3 is a front sectional elevation, taken on the line 3-3 Fig. 4 of the drawings, and viewed in the direction of the arrow.

Fig. 4: is a horizontal sectional plan view taken on the line 4-4 Fig. 2 of the drawings, and viewed in the direction of the arrow.

Fig. 5 is a broken detail part sectional view, illustrating one of the yieldably mounted supporting shafts for the nailing bases.

Figs. 6, 7 and 8 are side views in elevation illustrating respectively the nail driving mechanism acting on standard sized, oversized and undersized .material.

Figs. 9, 10 and 11 are detail sectional views disclosing the driven position of the nails relative to the side pieces of standard sized, oversized and undersized material,

In the drawings, the numerals 1, 2 and 3 ifidicate one series of the vertically and laterally adjustable nailing bases, and 4, 5 and 6 the opposing or companion series ofvertically and laterally adjusted nailing bases. lhese nailing bases are emh vertically slotted as disclosed by the reference numeral 7, Fig. 2 of the drawings, and the said nailing bases are held in vertical adjusted position relative to each other by means of the adjusting bolts 8, which serve to clamp the members of each series one to the other and hold the same in the desired vertical position; Each series ofadjustable nailing bases are thus united as an integral unit when adjusted relative to each other. Each unit of nailing bases is mounted upon a trunnion 9, which trunnions are mounted in bearings slidable laterally on an I-beam track ll and the said bearings 10 are setscrewed to laterally movable shafts 12. Therevare two such shafts provided, each carrying at its inner end a cam roller 13 which cooperates with an actuating cam 14. The said cam 14 is secured to the upper end of a vertical shaft 15, to the lower end of which is secured a bevelled gear 16 which meshes with a pinion 17 secured to the drive shaft 18 of the apparatus-Fig. 1 of the drawings. This shaft at its outer ends carry the cranks 19 to which are connected the lower end of the pitmans 20, the upper ends of which are extended through the hanger frames 21 secured to and depending from the outer ends of the vertically reciprocatingnail driver head 22. The connect ng rods are acted upon by the compression springs 23 which surround their upper end portions extended within the hangers 21 and said springs are held in position by means of the head 24 of the connecting rods and the lower face of the hanger 21, so that the said connecting rods 20 are yieldingly held relatively to the hangers 21 and act against the tension of the springs 23.

Returning to the laterally yielding shafts 12, it will be noted that the outer end of each fits within a bearing 25-Figs. 1 and 5 of the drawings, and that each of said shafts is held normally inwardly pressed bythe tension of a spring 26 fitted within a bearing box 25; the tension of the spr1ng 26 holding the cam roller 13 carried at the inner end of each shaft 12 firmly against the surface of the cam 14. This cam in the present case is formed with three steps, in dicated by the numerals 26'-Fig. 4 of the drawings, so that during each revolution of the said cam, the shafts 12 will be intermittently moved laterally three times and during the rest period of each movement of said shafts the cam rollers 13 resting on one of the steps 26' of the said cam 14, the period of rest of each shaft being sufficient to permit the nailing operation of the machine to be completed relative to one pair of positioned nailing bases. of giving or imparting three lateral move ments to the shafts 12 is to shift the position of the nailing bases 1, 2 and 3 and 4t, 5 and 6 to intermittently place their holding heads 1 automatically and independently in line with the drivers or nail punches of the apparatus.

The difference in height of the top surfaces or heads 1 between the respective pairs of nailing bases 2-5 and 3-4 allows for the thickness of one side shook or piece, while the adjusted difference in height between the heads of the nailing bases 1-6 and the heads of the nailing bases 2-5 and 3 4 allows for the difference between the width and height of the box to be nailed,

The purpose the bearing boxes 10 being mounted for lateral adjustment relative to the shafts 12 provide for an adjustment to vary the distance between opposite sets of nailing bases to accommodate a wide variation in the length of the boxes to be made, the vertical adjustment provided for each set of nailing boxes providing for a wide range of width andheight of boxes to be made.

In the present case, the design of the machine is such that the ends and side pieces are fed into the machine by hand and by hand the end pieces are turned over after one side has been nailed thereto for the nailing of the other side pieces, and, equally so, turned for the nailing of'the bottom pieces. However, it is immaterial so far as concerns'the present invention whether the partially formed box during the course of the nailing operation be turned by hand or automatically, equally so whether the material for the box be automatically fed into the machine or delivered thereto by hand.

i The operating mechanism of the apparatus is carried by any suitably constructed frame structure 27, common to box making machinery and which supports the oscillatory nail feed pan 2S and the nail guide tubes 29, which receive the nails therefrom and guide the same to the nail chucks 30 carried by and downwardly projected from the usual nail chuck frame 31. From the nail;

work through the nail chucks 30, the nail punches being adapted to project below or beyond the nail chucks to a distance of approximately one-sixteenth of an inch when the nail driver 22 has reached its lowermost position and said punches serve to force or drive the nails 33 into the box material so as to leave the head thereof on the completion of the nailing operation substantially fiush with the upper surface of the sides and bottom pieces--Figs. 6 to 11 of the drawings.

In Figs. 6 and 9 of the drawings the nails are illustrated as driven through the side of bottom pieces of a box formed from material of standard thickness, while in Figs. 7 and 10 illustration is made with the nails driven into material oversized, and the representation in Figs. 8 and 11 is of the nails driven into material undersized, but in each of said illustrations it will be noted that the head of the nails after the driving operation is substantially flush with the upper surface of the side or bottom pieces 34 being nailed onto the end or head piece 35 of the box.

To accomplish this uniform driving of the nails leaving the same after being driven home with the heads substantially flush with the upper surface of the side or bottom'pieces,

it is required that the downward movement of the nail driver 22 be stopped or brought to rest after the nails have been driven a. given distance to leave the head flush with driver 22 depend the nail punches 32 which said surface. This arresting movement of the nail driver 22 is accomplished through the medium of the compression springs 23.

The nails are driven into the material by the downward movement of the nail driver 22 until the heads thereof have been sunk substantially flush with the top surface of the material through which they are driven, at which time the nail chuck bears onto the upper surface of the said pieces and the nail driver 22 at such time will have reached the limit of its downward movement. In case the side or the bottom pieces are formed of material oversized as to thickness, there will be less downward movement permitted the nail driver 22 over that permitted where the material is of standard size, and in such case after the nail chucks have been brought to bear onto the upper surface of the material it is necessary that the action or downward movement of the nail driver 22 becontinued until the nail punches have driven the rails to such a depth into the material as to bring the ends or heads thereof flush with the upper surface of the side or bottom pieces, which additional movement IS permitted by the springs :23 allowing the pitrnan rods 21 continuing their downward movement and the compression of the springs serving by the pressure placed onto the hangers 21 to continue the downward movement of the nail driver 22 until the nails have been firmly driven home, as disclosed by Fig. 7 of the drawings.

'here the material is undersized, the nail driver 22 continues its downward movement after the nail chucks 30 have been brought to bear onto the upper surface of the material through the compression of the springs 23, but the compression of the springs in such case is slightly less than that imparted thereto When acting on oversized material, as disclosed bv Fig. 8 of the drawings. It will; thus be noted that in each case the driving of the nails ceases on the heads thereof being sunk into the material until the tops thereof lie substantially flush with the upper surface of the side or bottom pieces.

In Figs. 5), 10 and 11 the normal nailing line is disclosed by the reference numeral A, the completion of the nailing operations (he closed thereby indicating that the nails have been sunk into the material substantially a uniform depth and flush relative to the upper surface thereof and this irrespective as to whether the material constituting the side and end pieces be from standard, oversized or undersized material, with the result that there is always a proper nailing of the pieces to the heads or ends of the box without mutilation or damage to the shook, and with the assurance that the said sides and bottoms are properly secured and held to the ends or head pieces.

By mounting the vertically adjustable nail bases for slight lateral swinging movement through the medium of the trunnions 9,

' the same will readily adapt themselves to boxes varying slightly in width, due to the nonuniformity of the ends or head, pieces as to thickness.

In the illustration of the apparatus for the carrying out of the invention, the same is disclosed as operating on a box 4 inches indepth, in which case the adjustable nailing bases 1 and 6 have been adjusted vertically relatively to the companion nailing bases as to position the heads 1 thereof a proper distance from the chuck frame 31 to permit of the introduction of the heads or end pieces 35, and the placing of the sides or bottom pieces 33 thereon for nailing. After the bottom ieces 33 have been nailed to the heads or en s 35, the partially formed box is then turned, and as the width thereof is censiderably greater than the depth, the heads or ends of such boxes will rest on the heads 1 of the nailing bases 2-5, the action ofthe cam 14 at such time being to shift the position of the nailing bases laterally to position the heads 1 of the nailin bases 2-5 in line with the nail punches.

6n the completion of the second nailing operation the box is again turned for the nailing of the opposing side pieces thereto, but as the height thereof is slightly greater, due to the thickness of the side pieces just nailed, it is required that the partially formed box he supported by heads 1 positioned ina slightly lowered plane from the heads 1 of the nailing bases 25. It is for this reason that the nailing bases 3-4 are so positioned as to place the heads 1 thereof in a plane lower than the heads 1 of the nailing bases 2-5, Fig. 1 of the drawings. In the third nailing operation the partially formed box is positioned to rest on the heads 1 of the nailing bases 3-4, which places the upper edges of the heads or ends in the same position relative to the nailing mechanism as when supported by the heads 1 of the nailing bases 25.

The nail chucks 30 are carried by the chuck brackets 30 which are slidably adjustable relative to the nail chuck frame 31, so as to permit the distance between eah set of nail driver chucks to be increased or decreased in accordance with lateral ad- 'justments given to the sets of nail bases to adapt the same for operation on boxes of different widths.

Under no normal working condition of the apparatus are the nails driven into the material to be united other than a predetermined distance, for any movement of the'pitmans 20 which would cause a downward movement of the nail driver 22 equal to the fullmovement of the said pitmans if connected rigidly thereto, is overcome or avoided by the introduction of the compression and cushioning springs 23 interposed between the pitmans 20 and the nail driver 22.

It is apparent that the nail bases may be adjusted vertically to adapt the same for While the preferred embodiment for the carrying out of the invention has been illustrated and described, I do not wish to be understood as limiting or restricting the invention to said details of construction, being well aware that changes may be made in the working parts of the apparatus without causing or creating a departure from the nature and spirit of the invention, and wish to be understood as claiming the invention as broadly as the state of the art will warrant.

Having thus described the invention, what is claimed and desired to be protected by Letters Patent of the United States is 1. In a box nailing machine, the combination with-the nail delivery and the nail driving mechanisms thereof, of a plurality of groups of nailing bases held in spaced relation, and means permitting independent vertical adjustment to the nailing bases of each group. v

2. In a box nailing machine, the combination with the nail delivery and the nail driving mechanisms thereof, of a plurality of groups of nailing bases held in spaced relation, the. members of each group being independently adjustable relative to each other to adjust the position thereof with respect to the nail driving mechanism to adapt the niachine for the nailing of boxes of varying sizes.

3. In a box nailing machine, the combination with the nail delivery and the nail driving mechanisms thereof, of spaced groups of nailing bases mounted for lateral swinging movement, each group comprising parallel disposed independently vertical agjustable bases, and means for holding t nailing bases in vertical adjusted position.

d. In a bot: nailing machine, the combiaeasea nation with the nail delivery and the nail driving mechanisms thereof, of spaced groups of nailing bases mounted for lateral swinging movement, the bases of each group being independently vertically adjustable relative to one another, means for holding the nailing bases in adjusted position, and means .for automatically adjusting the posi tion of the groups of nailing bases during the operation of the machine.

5. In a box nailing machine, the combination with the nail delivery and the nail drivin mechanisms thereof, of spaced groups of nailing bases, each group comprising a series of independently vertically adjustable nailing bases held in parallelism, and means for automatically shifting the position of each group of nailing bases laterally during the operation of the machine.

6. In a box nailing machine, the combination with the nailing mechanism thereof, of spaced groups of nailing bases, each group comprising a series of vertically disposed independently adjustable bases held in parallelism, and means for imparting lateral adjustment to each of said groups.

7. In a box nailing machine, the combination with spaced groups of nailing bases, each of which comprises a series of independently vertically adjustable bases arranged-in parallelism, and means holding the bases in adjusted position relative to one another.

8. In. a box nailing machine, the combination with spaced groups of nailing bases,

each of which comprises aseries of independntly vertically adjustable bases held in parallelism, a laterally adjustable bearing for each of said groups, a spring held horizontally disposed shaft for each bearing, and means interposed between said shafts for actuating the same to shift the position of the groups laterally during the operation of the machine.

9. In a box nailing machine, the combination with the nail delivery and nail driving mechanism thereof, of a plurality of groups of nailing bases held in spaced reiation, the

members of each group being disposed in different horizontal planes with respect to each other, and means for automatically varying the lateral position of said nailing bases with respect to each other during the operative movements of the machine in the formation of a box.

In testimony whereof I have signed my name tov this specification.

' GEURGE D. PARKER.

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