US1496316A - Case-nailing machine - Google Patents

Description

June 3 1924.

J. JACKSON CASE NAILING MACHINE Filed Oct. 23

ts-Sheet 1 llweu 1m:

' jwme 3, 1924. 1,496,316

J. JACKSON CASE NAILING MACHINE Filed 001;. 23, 1925 7 Sheets-Sheet 2 June 3 1924. 1,496,316

JJACKSON CASE NAILING MACHINE Filed Oct. 23, 1923 7 Sheets-Sheet 5 1 4/ 4i v! M 7 Sheets-Sheet 4 J JACKSON CASE NAILING MACI-iINE Filedoct 23 .Fune 3 1924.

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June 3 1924. 1,496,316

.1. JACKSON CASE NA ILING MACHINE 2% 92 /22 Y 7 Sheets-Sheet s Z43 iiy/a II]? U 7/1 9 I (lama/1111111:

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. 1,496,316 J. JACKSON CASE NAILING MACHINE Filed Oct. 23, 1923 7 Sheets-Sheet 6 CASE NAILING MACHINE Filed Oct. 23, 1923 7 Sheets-Sheet o w if 9/ /0/ m2- Patented June 3, 1924.

tlhlil'lE STATES PATENT QFFICE.

JOHN JACKSON, OFFOREST LODGE, NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA.

CASE-NAILING MACHINE.

Anplication filed. October 23, 1923. Serial No. 670,316.

To aZZ whom it'mag concern:

Be it known that 1, JOHN JACKSON, a subjcct of the King of Great Britain, residing at Forest Lodge, near Sydney, in the State of New South Wales, Commonwealth of Australia, have invented new and useful Improvements in Case-Nailing Machines, of which the following is a specification.

This invention relates toan improved case nailing machine, and it has been devised particularly in orderto provide improved means of a simple character whereby a series of nails canbe driven into the assembled case parts simultaneously and in a horizontal position.

The invention alsoembodies an improved cleating device which is designed as an attachment to the case nailing machine whereby the necessary cleats for a case can be readily nailed in position and the nails clinched.

The primary objects of this invention are to provide a case nailing. and cleating ma chine of simple and economic construction, which will be found particularly adaptable for the production of a rapid output in repetition work, and means providing dimensional or other adjustments as is necessary for cleating and nailing various sizes of cases.

A case nailing machine according t-o'one embodiment of the invention. is characterized by having a substantial cast metal frame, work holders adjustably mounted upon said frame, nail feeding devices adjustably supported uponsaid frame and adapted to deliver the nails horizontally and at predetermined intervals to nail holders arranged adjacent to each corner of the case, horizontally disposed nail punches to which is imparted a horizontal reciprocae' ing action to drive the whole of the nails into 'the' case simultaneously at one operation, and means for slightly raising the nail points and for guiding same in such manner as to ensure that each nail is forced by its punch in a truly horizontal plane.

Reference being bad to the accompanying drawings I Figure 1 is a view in plan of a machine constructed according to the invention.

Figure 2 is a view in end elevation of the machine with the work holders, nail feeding and nailing devices removed. -Figure Sis a side elevation of Figure 2. Figure 4 is afragmentary view in sec- Figure 6 is a view in side elevation of one half of a punch carrier and illustrating the means whereby one set of nail punches is adjustably mounted in position thereon.

Figure 7 is a view in end elevation, on an enlarged scale, of a nail punch.

Figure 8 is a sectional view in plantaken on lines AA of Figure 5.

V Figure 9 is a view in side elevation of one of the nailsupply hoppers, and a set of spiral and telescopic chutes employed to deliver'nails therefrom toa series forming a set of nail holders. 2

Figure 10 is a central vertical section of a nail supply hopper.

Figure 11 is a detail view in plan of one of the telescopic chutes.

Figure 12 is a View in side elevation, partly in section, of one of the telescopic chutes and a nailv holder associated therewith.

Figure 13 is a view in side elevation of one of the pillars which forms part of a work holder.

Figure 14 is a front elevation of Figure 13. V

Figure 15 is a plan of Figure 13.

Figure 16 is a view in plan of the cleating device.

I Figure 17 is a view in side elevation of Figure 16.

Figure 20 is a view in front elevation of one 01": the pedestals supporting a series of nail holders.

Figure 21 is a side elevation of Figure 20.

Figure 22 is an enlarged. sectional view in plan taken on line 13-13 of Figure 20.

Figure 23 is a central longitudinal section of one of the nail holders.

Figure 24 is a central longitudinal section of an adjustable nail holder.

Figure 25 is a plan view of Figure 24.

Figure 26 is a view showing in front elevation and in edge view one of the slotted plates for controlling the delivery of-nails, one at a time, to a nail holder.

Figure 27 is'a view in plan of an adjustnism illustrated in Figures 29 and 30.

in these views the numeral 1 designates longitudinally disposed main castings, which are rigidly secured together transversely and at a predetern'lined distance apart by suitable castings 2 in order to provide a substantial and somewhat rectangularshaped base or support, upon which is mounted the whole of the operative and other integers of the machine.

A transversely arranged rectangularshaped bearer 3 is fixedly secured at its opposite ends to the upper surface of the main castings 1 and inverted T-shaped slots or grooves a are formed in said bearer bar to slidably receive the heads of bolts 5 which enable carrier plates 6 to be adjustably secured transversely across the bearer bar 3 so as to support adjustable work holders 7 For this purpose, each carrier plate 6 is furnished with a pair of inverted T-shaped slots 8 to receive the head of the securing bolts 9 of said adjustable work holders 7.

The slotted bearer bar 3 and carrier plates 6 enable the position of the work-holders 7 to be readily adjusted longitudinally and transversely to suit varying sizes of assembled parts which are to be nailed together when mounted upon the bearer bar 3.

The work-holders 7, which are four in number, are arranged at required positions to firmly grip the four corners of the assembled case parts as illustrated in Figure 1, and these work holders comprise vertical standards 10 having a base 11 adapted to be secured to the carrier plate 6 by the bolts 9. i

Spring actuated buffer plates 12 are fitted in a vertical position to standards 10 and they are arranged at right angles to one another in such a manner as to bear against the interior surfaces of the longitudinal members A and transverse members B respectively of the case parts. These butler plates 12 are fixedly secured ,to horizontal rods 13 passing through holes 14: formed through the standards 10 and having screwthreaded ends that are furnished with nuts 15 for adjusting the position of the buffer plates 12 and functioning also, for the regulation of the'tension of coiled springs 16 which encircle the rods 13 between said buffer plates and said standards 10. The springs 16, while exerting sufficient pressure upon the buffer plates 12 to maintain the case members A and B firmly in a relative vertical position for nailing, enable case parts of varying thickness to be readily clamped in position.

The longitudinal members A. of the case integers are so arranged and assembled that their exterior surfaces adjacent the ends bear against the sides of a series of nailholdcrs 17, while the exterior surfaces of the transverse members B of said case bear against spring-actuated buffer plates 18, which are mounted upon adjustable rods 19 fitted in bracket or frames 20 supporting said nail-holders.

The nail-holders 17 consist of a series of downwardly inclined and superimposed trays or chutes, which are adjustably fitted in dovetail-shaped guide grooves 21 that are formed in the sides of said brackets or frames 20, and they are adapted to be locked at any selected position within said brackets or frames by a clamping plate 22, which is fixedly secured thereto by screws or studs 23.

Each nail-holder 17 is furnished at its forward end with a V-shaped channel or recess 24 that receives a nail and supports the same in horizontal position, whilea longitudinal guide groove 25 is formed in the upper inclined surface of the nail-holder to accommodate the head of the nail, thus permitting such nail to descend the inclined surface of the nail holder with a rolling motion into said V-shaped recess 24:.

The rear portion of each nail-holder 17 is supported within the bracket or frame 20, and it is furnished with a horizontally disposed T-shaped slot 2, through which the nails are delivered, one at a time from a main supply hopper 27 in the manner hereinafter described.

Each bracket or frame 20 supporting a series of nail-holders 17 is furnished with a foot 28, and is adjustably mounted upon a base or carrier 29 by means of bolts 30, the heads of which engage a longitudinal slot 31 of inverted T-shaped formed in said base and enabling said bracket to be ad justed to suit the length of the cases being nailed. Each base member 29 supports a pair of said brackets or frames 20 at each end of the machine, and it is secured adjustably to the upper surface of the end rastings 2 of the machine frame by means of studs or bolts 32 that are passed through slots 33 formed in said base, thus permitting the position of the base members 29 and the nail-holders 17 to be adjusted as may be required to suit the width of the cases that are to be nailed.

All of the nails required to secure the assembled case integers are driven simultaneously'by' a series of horizontally disposed reciprocating nail punches 3a, which are arranged one above the other and disposed approximately in alignment with the V-shaped channels or recesses 2 L formed in the upper surface of the nail-holders 17.

Each series of nail punches 3 i is rigidly but adjustably nioui'ited in carriers or liold ers 35 constructed of castmetal in two sec-' 3% is screw-threaded and is screwed through a tapped block 36,which is detachably and adjustably mounted in a recess 37 that is formed by the flanges 38 of the opposing sections of the punch-holder The screwthreaded end of each punch 3% passes between the flanges 38, and through a square washer 39 located at the rear of said flanges, and it is fitted with a nut 40, which when tightened against said washer 38, rigidly clamps the nail-punch 34 and also functions to lock together the two sections of the punch-holder. v

Each nail-punch holder 35 is rigidly, but adjustably, mounted upon a bearer bar 41 (Figures 1 and 2) for which purpose a dovetail groove a2 is formed on the rear surface of each half of the l10lClO1.- This groove slidably accommodates the similarly shaped upper and lower edges 4L3 oi said bearer bar 4-1, and saidholder can be locked at any required adjusted position along said bearer bar by clamping plates L4 and studs 4E5, thus permitting adjustments being made so as to suit cases of variable dimensions required to be nailed. V r

Brackets x6 are-formed integrally. with the bearer-bar 41, and they are fixedly,but adjustably, secured to pedestals 49 by means of bolts l? passing through slots '18 formed in said brackets, the pedestals being secured to, or formed on, a transversely disposed re ciprocating carrier 50. (Figures 2, 3 and 4-.) This carrier is slidably mounted in a guide 51, carried by the upper portion of the longi tudinal main casting 1 of the machine frame. A pair of carriers 50 is a ranged at each end of the machine, and the inner end portions of opposing carriers overlap. If desired, the inner end portions of one pair of carriers at one side of the machine may be bifurcated to receive the inner end of the opposing carriers.

I Fixedly secured to the inner end portion of each carrier 50 is a pivot pin 52 having motive power.

its ends passing freely through a slot 53 that is formed iii the rear end portion'oi the op posing carrier, and the prmechng ends of saidpivot pin are supported in bearings 5 t which are slidably mounted in guide-ways formed in the upper end portions of the side ii'iembeis lot the machin '"raine.

A. downwz'irdl and inwardiy inclined link is pivotally attached at its upper end to each pivot pin the tree and lower ends of Said links being, pivota' 'iiiounted on a shaft 57 extending ti'ansve work. This shaft is rot-2 bearings 58 slidahly,mounte cal reciprocatoi'y movement in. guides 539 formed intlie side frames 1. rollers 60 fixed 011 said shatt at a required'distance apart trictionally engaging suitably shaped cams 61, which are mounted eccen rically upon an other transverse shaft (52.

in o u iifiet in the nature of atoggle connection and as e shaft 57 is vertically reciprocated by the to have verti I The link oonnec' etlon or" the carrier 50 with the shaft 57 is in cams 61 the carriers 50 and thereby the nail punch carriers will be moved in a direction toward and away from'each other. This shaft 62 is disposed below the roller shafts 57, and is i'otatably mounted in stationary bearings 63 secured to or formed on the side members 1 of the machine frame.

Rotary motion is imparted to the scam shaft 62 by train of toothed wheels (54, to which motion is transmitted by a pinion 65 keyed on a main driving shaft 66. This driving shaftis revolvably'mounted in bear-- ings secured to the machine frame. and it is iturnished with a driving pulley 67 to receivea power transmission belt (not shown) from an electric motor or other source of :lVhen rotary n'iotion is transmitted to the ca'iii-shatt 62, the engagement of the cams 61 with the rollers 60 on the shaft 57 causes connection 56 betwen said roller shaft 5? and the carriers 50 (supporting the nail punch holder 35 atopposite ends of. the machine) causes required horizontal reciprocating motion to be/ imparted to the nail punches, whereby all ot the nails that re supported upon the nail-holders 17 are Y operation into the assembled. case intcg r In order to positively ensure the return movement of the reciprocating carriers 50 and rollershaft 5'7 at the end of each operative stroke in nailing operations, an eccentric- 68 (Figures 29, 30 and 31) havingthe same throw as the eccentric cams 61 is keyed upon the camshaft 62 at a. position about the centre of its length, and a metal strap or band 69 is passed. loosely about said eccen tric 68. This strap alsopasses about and is a,

mounted upon said roller shaft 57. This metal strap functions to maintain the rollers in constant frictional engagement with the cams 61 and provides for an even reciprocating motion being imparted to said carriers 50 and to the nail punches 34 and holders 35 supporting the latter. I The nails for securing together the assembled case parts A and B are deposited in the nail hoppers or receptacles 27, each of which is partitioned into a series of vertically arranged narrow compartments 72 (Figures 1 and 10) having sloping bottoms 7 3 furnished with discharge slots 74, through which the the nails project with their points depending downwardly through said compartments. Each nail hopper 27 is revolvably mounted by means of brackets 75 'on a transverse spindle 76. This spindle is fixedly supported at its opposite ends in apertured bosses 77 that are formed at the upper ends of brackets 78, which are affixed at their lower ends to the machine frame, as is illustrated in Figure 9 of the drawings. A tipping motion is imparted to the nailhoppers 27 by means of a lever 79, which is pivotally mounted upon said spindle 76. This lever 79 has one end pivotally attached by a link 80 to a lug or bracket 81 depend ing from the rear portion of the nail hopper 27, while the opposite end of said lever is pivotally attached by a rod 82 to a lever 83, secured on the outer end of a rocking bar 84. Said rocking bar 84 is revolvably mounted in bracket bearings 85 secured to the machine frame, and it is furnished with a lever 86 pivotally engaging a pin 87 secured to and projecting from the pedestal 49 supporting the nail punch-holders 35.

The reciprocating movement of the carriers 50 supporting the pedestals, on which are mounted punch-holders 35 imparts intermittent tipping motion simultaneously to the nail hoppers 27 by reason of the pivotal connection of the same with the punchholders 35. The intermittent tipping motion thus imparted to said nail hoppers causes the nails in each of the compartments to be discharged therefrom gravitationally in a vertical position into a slotted and inclined chute or tray 88, which (Figure 9) is rigidly supported by brackets 89 that are secured to the supporting brackets 78. This inclined and slotted chute or tray 88 has its slots registering with the upper and vertically disposed ends of a series of spiral chutes 90 so as to deliver the nails by gravity into said chute. The spiral formation of the chutes ensures delivery of the nails in a horizontal position one behind the other into a series of telescopic chutes or trays 91 each having its movable element 92 hingedly or pivotally attached at 93 to the delivery end of a spiral chute 90, while the stationary element is secured to the rear end of a nail-holder 17 at its undersurface by a bracket 91*, as is illustrated particularly in Figure 12. The discharge end of the stationary element of each of the telescopic chutes or trays 91 is positioned slightly above 70 the T -shaped slot 26 formed in the rear portion or wall of a nail-holder, and vertically slidable between the discharge end of the stationary element of the telescopic chute and the rear portion of the nail-holder is a 75 cut-off plate 94, having a horizontal T- shaped slot 95 of required dimensions to snugly accommodate the head and the shank of a nail.

Each cut-off plate 94 is fixedly but adjustably mounted in a frame 96, which is vertically slidable in the rear portion of the bracket or frame member 20 supporting a series of the nail-holders 17.

Vertical reciprocating motion is transmitted to the slidable frame 96, supporting the. cut-off plates 94, by means of a bell-crank lever 97 pivoted upon a pin or stud 98 secured to the bracket or frame member 20 (Figure 28). One arm of said bell-crank 90 lever has a slot 99 to receive a pin 100 secured to the lower transverse member of the slidable frame 96, while the other arm of said bell-crank lever is fitted with a pin 101, which passes through a slot 102 formed in 95 the end of a push rod 103 that is affixed to the nail punch holder.

Reciprocating movement of the nail punch holder 35 by reason of its pivotal connection with the vertical slidable frame 96 support- 100 ing the cutoff plates 94 causes a vertical reciprocating movement to be transmitted to one series of said cut-ofl' plates, whereby at the termination of the upward stroke of said plates, a nail gravitates from the discharge 105 end of each telescopic chute 91 into a slot 95 in a cut-off plate 94. At the termination of the downward stroke of said cut-off plate the slotted portion of the same is brought into register with the guide slot 26 formed in the rear portion of the nail-holder 17, thus enabling the nails to be delivered by gravity one at a time through said guide slot.

Each nail after passing through the slot 26 in the rear portion of the nail-holder 17 gravitates by a rolling motion down the inclined surface of said holder, until it is held in a horizontal position in the Vshaped channel or recess 24 formed therein.

The reciprocating movement of the carrier arms 50 causes each nail puncher 34 to contact with the head of a nail supported in the V-shaped channel 24 and drive the same in a longitudinal direction into each corner of the assembled case integers.

The drawings show an arrangement wherein six nail punches and six nail holders are provided for driving six nails simultaneously into each corner portion of the assembled case parts, but it will be readily 130 trated in Figures 16, 17 18 and 19 for at tachment to the machine. These cleating devices comprise two vertically disposed hollow metal castings 104 of rectangular configuration, which are adapted to take the place of the work-holders 7 when the cleating operation is being performed.

said metal castings are fixedly but adjustably mounted upon the carrier plates 6,

which for this purpose have recesses 105.

formed on the underside of their opposing edges to accommodate therein a clamping plate 106.

A rib or flange 107 is formed integrally on and depends from the bottom of each of the castings 104 and is adapted to fit snugly within the space 108 formed between the opposing edges of the said carrier plates 6, while a bolt 109 having its head countersunk into the clamping plate 106 passesupwardly through a hole 106 formed in the bottom of the casting 104 and is fitted with a nut 110 for rigidly securing said casting in position.

Furnished in each ofthe said castings 104 on opposite sides thereof is a vertically disposed dovetail guide 111, which slidably accommodates a reciprocating slide 112 having integrally formed on the outer surface thereof three transverse horizontal bars 113 which extend across the side of the said casting 104 and have their lower edges 114 chamfered.

Two vertical distance bars 115 disposed one on either side of said slide 112 have on their interior surface three lugs 116 the upper edges 117 of which are chamfered to correspond with the chamfers 114. These lugs 116 are adapted to register and contact with the bars 113 which impart simultaneously with the forward movement of the nail punches ahorizontal reciprocat ing motion to said vertical distance bars 115, which are guided during this motion by means of two horizontal guide pins 118 secured to and projecting from the inner surface of said distance bars, being slidably accommodated in guide holes 119 that are formed in the side of said casting 104.

A. vertical clinching plate 120 is snugly disposed between the opposing edges of the 7 pair of distance bars 115, and it is secured at its upper and lower ends by countersunk screws 121 to lugs 122 formed integrally with and projecting from the slide 112. r

The vertical slides 112 that are slidably accommodated in the dovetail guides 111 formed in the opposite sides of each of the main castings 104 are rigidly connected together by a bridge-bar 123 which is furnished with a centrally disposed apertured boss 124, throughwhich is passed a horizontal spindle 125, the projecting ends of which are adapted to reciprocate in vertical slots 126 formed in each end of the wall of the casting 104.

Connecting rods 127 are pivotally connected at their upper ends to the horizontal spindle 125, and the lower end of each connecting rod 127 is secured to the upper end of the rod 128 of aneccentric 129 which is mounted upon the cam shaft 62.

Rotary motion being transmitted to the cam shaft 62 causes the eccentric 129 to impart a vertical reciprocating motion to the said slides 112, which are initially at the lower end of their stroke at the commencement of the cleating operations.

, y this arrangement the vertical distance bars 115 will be l11 1ClV21I1C6 of the clinching plate 120 for the purpose of forming a space 180 between said clinching plate and the case member B as seen in Figure 16. The spaces 130 provide ample room to enable the ends of the nails to be driven through the cleats C and case member B by the advancing nail punches 34 without danger of being bent in such action.

At the predetermined moment when the shank of the nail has been passed through the. cleat and case member and the head thereof is flush with the former. the slides 12' move the transverse wedge shaped bars 118 to disengage from the lugs 116 formed on the vertical distance bars 115 llowing the said bars 115 under the advancing pressure of the said nail punchers to retrieve flush with the clinching plate 120see Figure 18.- The upward moving clinching plate 120 now engages with the end of the nails and clinches and inlays same into the case member B.

It is necessary that cleats should be nailed to the case integers B before the same are assembled in the machine with the case parts B for nailing. For this purpose, the work-holders 7 employed to maintain the case integers in position for nailing are removed, and the case integers and the cleats are secured firmly in position between the vertical distance bars 115 and the slides of the nail-holder 17 while the nails are driven in the manner hereinbefore described.

lVhat I do claim is 1. In a case nailing machine, the combination with the machine frame, of brackets carrying nail holders in superposed relation, a series of work holders to engage assembled case members adjacent the corners to position the same relative to the nail holders, each of said holders comprising brackets mounted on adjustable carriers supported on the machine frame, rods adjustably mounted in said brackets, buffer plates mounted on said rods, and springs encircling said rods and interposed between said brackets and buffer plates, substantially as described.

2. In a case nailing machine, a nail holder consisting of a tray having an inclined supporting surface and at its forward end a channel of V-shape in longitudinal section, a guide groove at one side of said tray, and said tray having an entrance slot of T-shape formed at its opposite end, said slot and said groove being so arranged that a nail will roll down the inclined surface of the tray into said V-shaped channel, substantially as described.

3. In a case nailing machine, the combination with the machine frame, of vertically extending brackets supported by the machine frame to have adjustment toward and away from each. other; and a series of superimposed nail holders adj ustably mounted on each of said brackets, each of said nail holders having a transversely extending V- shaped nail holding channel at its forward end, a T-shaped slotted portion at its opposite end, and a guide groove at one of its side portions intermediate the V-shaped channel and slotted portion.

4:. In a case nailing machine, a hopper arranged with a series of compartments, a series of nail holders each having a T- shaped slot formed therein, chutes to receive nails from the hopper compartments and deliver said nails into said nail holders, cut off plates located between the discharge ends of said chutes and the entrance ends of said nail holders, each of said out off plates having a T-shaped opening corresponding to the T'shaped slot of the holders and adapted to be alternately brought into register with the end of a chute and the correspondi'ngly shaped slot in a nail holder todeliver nails from the chute to the nail holder.

5. In a case nailing machine, a frame, nail holders carried by the frame in superposed and predetermined spaced relation, means to position assembled case sides and ends relative to the nail holders, nail punches, carriers in which said punches are mounted relative to the nail holders, means to actuate said punch carriers, comprising a horizontal roller shaft mounted in said frame to have vertical sliding movement, oppositely arranged carriers for the punch carriers mounted in said frame for transversely sliding movement and having their inner ends overlapping, pivotal link connections between said carriers and roller shaft, a cam shaft, a cam on said shaft operative to impart vertical upward movement to said roller shaft, and means for effecting downward movement of said roller shaft substantially as described.

6. In a case nailing machine, the combination with the machine frame, of brackets mounted thereon, nail holders mounted in said brackets in spaced relation, carriers in which said nail holder carrying brackets ar mounted in opposed pairs, said carriers being mounted upon the machine frame to have adjustment toward and away from each other, and the brackets of each pair of brackets having adjustment in said carriers toward and away from each other, means to position and clamp case sides to the nail holders mounted in a bracket of each pair of brackets and to position case ends in interposed relation to the case sides and clamp said ends to each pair of nail holder brackets, carriers upon which said clamping means is adjustably mounted and said carriers having adjustment with the clamping means relative to and away from each other, and

nail punches recipro'cable transversely of the.

nail holders and toward and away from the case sides clamped to the nail holders to drive nails carried by the nail holders into the case sides and interposed case ends to secure the two together.

In testimony whereof I aflix my signature in the presence of two witnesses.

JOHN JACKSON} Witnesses G. GARDNER, R. BOULTON.

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