US180503A - Improvement in box-nailing machines - Google Patents

Description

4 Sheets-Sheet 1.

G. W. SWAN. Box-NAILING MACHINE.

Patented Augnl, 1876.

4 Sheets-Sheet 2.

v G. W. SWAN.

BOX-NAILNG MACHINE. 0.180,503. Patented Aug.,1,1876.

i I I I `o .l 1 5 @y l v 'Y E@ Y @n .-Z-m

tnesses nvell ur N. PETERS. PHOTD-UTHORAFNER, WASHINGTON. D (A 4Sheets-Sheet3. G. W. SWAN.

BOX-N AILING' MAGIHN'E. No. 180,503. v Patented Aug.`1,1876.

Witnesses Inv 111:011 /Qmw @mW- ILPETES. PHDTO-LITHOGRAPHER. WASHINGTON D C 4Sheets-PSheet4.- G. W. SWAN.

BOX-NAILlNG MACHINE.

N,130,503 Patented Aug.1,1a7a.

.Figa

l L L Y 'L M nv ultor @mf Witnesses RFEF-RS. PHCTQ-ILITHOGRAPHER, WASHINGTOI. D CA UNITED STATES 5 A'Prrraiv'if Ormea.

GEORGE W; SWAN, OF SAN FRANCISCO, CALIFORNIA.-

IMPROVEMENT IN BOX-NAILING-MACHINES.

Specification forming part of Letters Patent No. 180,503., dated August 1, 1876; application filed May 9, 1876.

To all whom it may concern Be it known that I, GEORGE W. SWAN, of'

the art or science to which'it most nearly appertains to make and use my said inven tion without further invention or experiment.`

My invention relates to certain improvements in that class of machines which are einployed to nail together the parts of boxes, and the details will be more fully explained by reference to the accompanying drawings,

in whiehd Figure 1, Sheet .1, is a perspective view of my machine. Fig. 2, Sheet 2, is a vertical section taken through a2, Fig. 3. Fig. 3, Sheet 42, is a vertical section taken through b2,

* Fig. 2./ Fig. 4, Sheet 3, is a top view. Fig. 5,

Sheet 3, is a horizontal section taken through c2, Fig. 2. Fig. 6,- Sheet 4, is an enlarged view. of the transverse slide. Fig. 7 is a view of the feeders. Fig. 8 shows rod w, &c.

A is a frame, supporting the various parts of the mechanism. B is the table upon which the parts of the box to be nailed are laid. and this tablemoves up and down upon guides C upon the frame A, both for the purpose of primary adjustment, to fit or place it in position for any sizeof work to be done, and also to raise the parts of the box up, automatically, to the stationary cross-bar D, where the nails are driven out from the nail-holders into the box by the vertically-moving punches.

The adjustment of the table is made by means of vertical screws E, which are operated from a horizontal shaft, F, by means of v gear-wheels and pinions GH, one at each side of the machine, and the automatic movement of the table for the purpose of nailing each box -is also effected by the screws E, the shaft F being turned alternately. in one direct-ion and the other by pulleys I and J, which are driven in opposite directions by' means of straight and crossed belts from pulleys l' J upon the main driving-shaft K.

Friction-clutches L andY M, secured to the ,shal'tlh are alternately thrown into contact with the pulleys'Iand J, so that, by the alternate revolutions of the shaft F in opposite directions, it will act to raise and lower the table B by the action of the screws E. The clutches L and M are operated by clutch-levers'N N, which have their lower ends hinged to horizontal shafts 5 and lever-arms O O, projecting at right angles, so as in effect to form `b'ell-crank levers, are operated upon at the proper time by connectingrods P l? from the cams Q Q. These cams ar-e secured to a shaft,

It, which receives motion from the main driving-shaft K by means of a spur-wheel and pinions S S', as shown.

The nail-holders T are supported upon the stationary bar D at suitablev intervals, being adjustable by screws, and the driving-punches U, also adjustable, are secured in aline above these holders tol a cross-head, V, which slides in vertical guides upon the upper part ot' the frame A, and is operated by connecting-rods W' from cranks X upon the ends of the camshaft R.

The nail-holders T have conical holes, wider lat the top than at the bottom, so that a nail falling into one ot' them will be held in the small lower part of the nail-holder until the punch strikesit. The holder is made in two parts, held together by springs, and will thus readily allow the nail to be forced out into the box when the punch strikes it.

. The nailsare irst placed in slightly-inclined V-shaped troughs Y at theupper back part ot the frame, as shown, and the front ends of' these troughs are supported upon a transverse bar, Z, which is pushed in one direction by a cam-wheel, a, and is returned after the cam passes by a spring, b, thus giving a little shock, W h ich causes the nails to move slowly down the troughs until they fall upon the inclines c, which consist of two parallel -plates placed near enough together to allow the nails to swing between them and be held by the head. These plates c are placed between two outside plates, d, which guide them, and they are moved longitudinally by means ot' eccentrics upon a shaft, e, so as to continually feed the nails forward as they hang suspended in the slots.

'lransversely through the plates d, and just beyond the lower end ot' the feeders c, a bar,

f, passes, and this bar has an arm or frictionroller, g, projecting at one side, so that when the cross-head V rises and falls the arm g will enter an inclined slot, h, upon the crosshead, and by the action of the slot the barj" will be caused to move a short distance to the right and left at each movement ot' the crossshead. Thisbarhasa.diagonally-inchned slot, i, made vertically through it, where it passes cach ot' the' feeders. and when the bar is moved in one direction the upper open end of this slot is brought opposite the space between the feeders, thus allowingl one nail to move down into the inclined slot. r)Che reverse movement of the bar j forces the nail forward down the inclined slot, still supported -by its'head, until at the lower end the space is enlarged, so that the n'ail can drop into the spout j and pass directly to the nail-holder T. The barf is made in two parts, and a projection, el', trom the lower part forms one side ol'A the inclined slot fi, so that by sliding` these `parts ot' the bar upon each other the size of' the slot can bc adjusted to receive any size ol' nail. The parallel. plates` c can also be adjusted to or from each other by screws, so that it is only a momentary work to adjust the apparatus for any kind of nails. A slide is titted upon theside ot' the plates d, having a strap, 7s, which crosses the top ot' the plate. y moving this slide up the stra-p 7i: will stop the nails in anyone or more ot' the feeders, and this will be necessary when small boxes are to b'e tinished. The distance between the nail holders ll and between the drivingpunches U is made adjustable by screws, as bel'ore mentioned, for the samev reason. The cam-wheela, which operates the shaking-bar z, and the eccentric shaft e, which moves the feeders c, are driven by belts from a pulley at I upon the main shaft, either directly or by means ot' intermediate pulleys.

In order to hold the clutches L or M in c0ntact with their pulleys I 01 J, so that they shall held in position by guides p a-nd the adjustable vertical back q. The foot of the operator is then placed upon a treadle, (not showin) which throws a clutch into contact with the driving-pulley, (also not shown,) but which takes the place et' the crank R upon the main shatt K. As soon as the shaft begins to turn the cam .Q operates to throw the clutch L into contact with the pulley I, and this turns the vertical screws E, so as-to elevate the table until the upper part ot' the box strikes the arm t, which is hinged at one. end to the cross-bar D, so that the opposite end hangs a littlcvbelow it. A projection extending backward from the arm t stands just beneath the spring-latch m, so that, when the arm t is raised by the contact ot' the box, the latch m will be raised, and the lever a will be released, lhns allowing the clutch L to move out ot' contact with'the pulley l, this being effected by a spring. The screws E stop turning and the table remains stationary until the punches have been Jt'orced down by the cross-head V,thns driving the nails which are Vin the nail-holders T, after which the punches and crosshead move upward again by the continued action ot' the cranks X. upon the connecting-rods YV. rthe cam Q then' yacts to throw the clutch M into contact with the pulley J, the reversed belt ot' which causes the shat't t0 turn in the opposite directiol'i', and thus operate the screws E to depress the table until a projecting` arm, a, strikes an adjustable nnt, c, upon the rod Aw. This rod draws down one end of a lever, a', and the opposite endl releases the lever n b lil'tiiw the s nine-catch m when the actu-V ating-spring throws the clutch M out of contact with the pulley J, and the table remains stationary until the parts ot' another box are placed in position, and the cam Q again acts upon the clntchli, as above described. The back q, against which the parts are placed, is adjusted by screws, so that the nails will be driven into the middle, whatever the thickness ot' the pieces, andthe movement up and down of the table is made suilicient for the work to be done, (usually about three inches) After the box is inished and it is desired to put the cover on by driving the nails part way down7 the bar t is adjusted, so as to release the clutch L and stop the table a little lower down.' The cover-nails will then be found to project enough to be readily withdrawn when the box is needed for use, and will retain the cover in place until that time. readily adjusted to nail boxes -ot' any size by attaching a crank, z, to the end of the shaft F, and when both clutches are disengaged the crank can be turned, and the vertical screws E will elevate or depress the table to any point within the limit oln the machine. 1t will readily be seen that the greatest ditterences in size will not att'ect the automatic action ofthe machine, as the striking ot' the boxv against the arm t below the stationary bar D always throws out the clutch, which raises the table, and the adj nstment ot the nut con the rod w limits the descent of thetable, the space traveled over while working being, as before described, sulicient for any thickness ot'lumber or length of nail.

In order to insurethe proper position ofthe nails when they t'all into the feeders c c, the receiviiig-troughs Y are made, as above described, Vshaped, so that when the nails are put in at random the gradual shaking and moving them forward will canse them all to lie diagonally, whether the head or point be toward the mouth ot' the trough, and when they fall between the plates c c they will all hang in the same position-that is, with their The table is 180.503 I 'A e wedge shaped sides longitudinallyin the space between the feeders. They are held in this position until they are carried by the slotted bar f into the spouts j, which, being steeply inclined and having dat bottoms, will retain the nails still in the same position until they fall into the nail-holders. These, as before described, are funnel-shaped and made in two parts, and they serve only to hold the nails until they are driven by the punches.

In forming the vertical diagonal slots t' in the transversely moving bars f, it will be found necessary to make the upper acute angle of the slot (which acts as a cut-oft' for each nail as it is received) in the form of a yielding spring, because bad nails, or those of different sizes, are often found in any lot which may be used, and when one of these gets in front of any one of the points of the slots fi it will stop the whole bar unless such a provision is made.

By making9 these angles separate and mounting them upon springs, it will be seen that if one of them comes in contact witha bad nail the bar will move on, and the others will all feed properly.;

In my machine I have shown. a method of relieving thebar f if any such obstruction occurs, which consists in making one side of the 4slot or guide h of the cross-head V elastic, so that it will give and allow the bar to stop for obstructions.

I am aware that a patent has been heretofore granted for certain improvements in machines for nailing ho'xes, in which are claimed dies or nail holders, having a gradually-widening groove or slot, and guiding` the nails in a certain position, and also a toothed or tingered roller for taking the nails from a box and delivering them into die holders and con,- ductors. I do not therefore claim these devices, nor broadly a machine for nailing boxes.

I am also aware that nails have heretofore been fed to box -nailing machines by means of a slottedfeeder given a reciprocating movement; hence I do not claim this broadly; but

What I claim as new, and desire to secure by Letters Patent, is-

l. The table B, moving upon vertical guides C, and operated, both for primary adjustment and automatically to raise and lower the parts to be nailed, by means of the screws E, which are turned alternately in opposite directions by mechanism, substantially as herein described. y 2. The shaft F, with its pulleys I and J, turning in opposite directions,-as shown, and the clutches L and M, with their levers N, connecting-rods P, and cams Q, Q', for driving the shaft F, and through it the screws E, alternately in opposite directions, substantially as herein described.

stantially as herein described.

4. The arm t, loosely attached to the crossbar l), and having an arm extending beneath the latch m, so that when the table raises the box or other article until it stri kes the arm, the latch m will be lifted, and theclutch L will be automatically thrown out of contact with the pulley, substantially as described.

5. The rod w, with its adjustable nut o, and the lever a" beneath the latch m', in combination with an arm from the table B, .so that the descent ofthe table will release the clutch M and arrest 'the descent of the table, substantially as herein described.

6. The plates d, shaft e. and cam Q, in combination with the interior plate c, working in slots 3 on guides 4, as and for the purpose described.

7. 'lhe barf, having the'diagonally-inclined vertical slots i opposite. to each feeder, as shown, and provided with an arm, g, in combination with the incline h upon the crosshead V, for the purpose of moving the slots t' across the front of the feeders, so that they will each receive one nail ateach movement, and deliver it to the discharge-spout, substantially as herein described.

8. The bar f, made in two parts,the lower parthaving a projection, i', which forms onev as to receive the nails in any position and de liver them into the nail-holders T in the proper position to be driven, substantially as herein described.

1l. 'Ihe inclined guiding-slot h. upon the cross-head V, for operating the bar j', having one side made elastic for relieving the strain if the bar should be stopped in its movements,

substantially as herein described.

GEO. W. SWAN.

Witnesses Geo. H. STRONG, CEAS. G. PAGE.

Images