US82802A - colburn - Google Patents

Description

' 2 'Sheets--Sheets 2. L. S. COLBURN.

Tenoning Blind Slats.

No. 82,802.v

l Patented Oct. 6,- 1868. I

@latten gita-ttes illaeitt Letters Ptztrnt No. 82,802, dated October 6, 1868.

IMPROVEMENT yIii spar-MACHINES.

@In Srlntulc trium tu in tips trtltts "gnant mit mailling pitt of lip sume.

TO ALL WHOM I'l MAY CONCER:

Be it known that I, LYAIAN S. CLBURN, of Oberlin, in Lorain county, and State of Ohio, have invented certain new and useful Improvements -in Slat-d'lachines; and I-do hereby declare that the following is a full, clear, and exact des :ription of the same, reference beingdiad to theaccompanying drawings, through letters of reference inarlcczl thereon, forming part of this specification, and in which- Figure l represents front elevation of a' machine embracing my improvements.

Figure 2 is a plan or top ,view of' the same." i Y Figure 3 an end elevation', and

Figure 4 a vertical transverse 'section thereof, taken on the line n: x of fig. 1.

The same letters vof reference occurringi'on the several figures, indicate corresponding parts.

My invention relates to that class of machines used/'formatting to a given length, and shaping or forming, the tenons on the ends of slatsvfor window-blindm'and fcii 'ln's'erting the staple therein; and it consists in tho construction of the heads for holding the slat'to bc operated ou, in the manner of'presenting the work to the machine, so as to first saw oil' thecnds,v and then by rot ai il:`- against the cattws' o forni the pivots on its ends by a nevel combi/nation of devices;` inthe means foi-operating thcstaplcdnscifting mechanism automatically and in concert with said cutting and tnonin'g-mechanism; in'tlic'pciuliar'coinstruction ofthe feed-staple holdcr;

and in the device for supporting the stuff against the lateral' force of the staple-driver.

To enable others to make and use my invention, I'will proceed toi'dcscribe its construction and operation by referring to thevdrawings, in which A represents the mainframe' of the machine. Tho upper portion sonie what resembles the bed-frame of an ordinary lathe, supported on suitable legs, and is pro-vided with `journalbearings, ci, in which the driving-shaftl B is supported and'rot'iat'e's. On this shaft is a long cylindrical drum, B', or, it may be, two separate drums suitably located to'epei'atc the belts C. On one end of this shaft is. a smaller band-wheel D, the object of 'which will hereinafter appear. f

On thc upper portion of this frame A aresituated two heads; E, each carrying o, mandrel, a, provided with a band-wheel or pulley, l1, by which they are rotated'through the bands C, passing around the drum B. On each of these mnndrcls e are hung two circular'saws, m n, ol' different diameters, and having a plate, s, of steel, between them, the periphery oi' which is formed into a series of chisel-edges, and is of equal diameter with' the smaller saw, in, and of suitable thickness to form, with the saidsaw, the length of the tenons. 'lhcse saws mit, and the chisel-plate s, are rmly attached to their respective` nian'drels, and are rotated therewith, and all in the same direction, by means before described. l

Extending upwardly and outwardly from the 'rail A pf the frame A are two brackets or supports F, in bearings in the upper ends of which, about on a level with the upper portion of the saws n, is .pivoted the shaft G, on which are firmly secured twoarins, II Hpfoa'rryin'g at their extremity revolving holders I, tho one oo`rinccted with the arm H,having a pinion-wheel, X, attachedv to it, by which it is rotated, by gearing into the Sgmemal ,.ck J; which has@ partial ,-Omgm, n ltliigls'l'raft and is restrained from turning out of gear-with the pinion by the pin d bearing against either end of tlreh'otched portion of the hubf, which lis rigidly keyed on the shaft G on one side of saidsegmentiil'rack J; the pin Z in the side ofthe rack, near its axis ofmotion,` bearing against the notched portieri of"tlic'lil1b`f,also Serving, lby turning the shaft'G, to raise the arms H H' by depressing the handle-d'5 and thus to'lift' the workawayfrom the saws and hold the arms in a sitable'position for removing the finished slatand inserting a blank to be next operated on.

gg are two standards supported on ythe frame A,`on which rest thearms ll ll. They nre made adjustable vertically, by which` means the diameter of thepivots on the ends of the slats is regulated.

Combined with this machine'is an apparatus for inserting the staple in the finished slut automatically, and before it is taken out of tlle'holders before described, the f ic, K, of which is supported on th'e upper portion of the main frame A, transversely thereto, and about midway between the heads E: 'It is constructed with suitable hprights, L', through apertnresin which a sliding bar, ilL'is supported; Said bar is provided with two. armi Z lli the Olie @'Xly'ending upwardly, the other downwardly, forming a cross.' It 'also carries a sliding head,

N, which is limited in its inotion in one direction by a pin, p, passing through the har ill, and is supported in the opposite direction hy a coil-sning, fr', around an arm, which has freedom to slide through an aperture in arm I. 'Io the upper end of this head N is hinged the staple-feeder I', which is so constrlictcd' as to hold the staples one above another, which, by their own weight, are fed downwaiwl, so that the lowest one is opposite n. guiding-aperture iu the i'ront of said feeder, and resting against the driver q in itsl rear.

To the bar )I is also attached a tappet.' r, extending downwardly, and which i.; operated on by the eccentricpin, f, on thc head, Q, of the shaft lt, which shaft has a rotary inotiorl communicated toit through its pulley, T, and band, V, passing around the pulley D ou th'e end of the main driving-shaft ll, and through which devices u. sliding motion, intermittently, is communicated to the bar M, the receding motion of said bar being controlled in part by a spiral spring, tu, around it, and in part by the spiral spring a', which latter encompasses a rod parallel with the bar M attached to its arm l'. The opposite end of this rod is supported and guided in apertures in range therewith in the upright, Il', and in the lower end or tail portion of the supporting or rivetingbloch' W, which is hinged to the upright, L', above the bar M. i v

It will thus be seen that the spring :r performs a twofoldiunction, viz, to bear up tho block W against the edge of the slat while the staple is being driven, and to assist in carrying the bar M to its normal position when the tappet r is released from gear with tho eccentric-pin t. y'

In operating this machine, the stuff having been firstflressed to the desired width and thickness iu con# venient lengths, the handle J' is depressed, so as to elevate the holders I clear of the saws. One end oi`=thc strip is passed through the aperture in said holders, (which apertures are of corresponding shape and size with the cross-section of the shit, so that it inay lit snugly thereim) until the extreme end protrudes sufficiently therethrough to form the tenen or pivot. The mandrels e are then rotated by any suitable motor through the drum B' and belts C, and the lever J' is allowedto rise gradually, when the weight of the arms H Il will causo tho slat to come in contact with the saws n, by one of which the extreme end will be trimmed ofi, andvby the other the required length severed from the strip. The arms H H' now resting on the standards g, by a further elevation of the lever J', the rack J gearing into the pinion X, the stuif will be rotated against thc saws m and chiselplates s, whereby the shoulders are` cut, and tho tenori on each end rounded, simultaneously.

During this operation, the shaft R has been revolving slowly until the1eccentricpin l on the head Q has come in contact with the tappet r, bythe continuance of which revolution thersliding bar M is moved endwise, so as to bring the headN in contact with the edge of the slat, which has now ceased to revolve, and,I by the pressure oi the spring z on the lower portion of' the block W, it (the block) is caused to bear against the opposite side of the slat, when, by the continued motion of thcbar M, the driver q, attached to its arm, Z, is forced through the aperture in the lower portion oi the staple-feeder P, at top ofthe head N, carrying with it a staple, which is thereby pressed into the edge of' the slat to a proper depth. The tappet r is then released from the eccentric-pin t by the continued revolution of the head Q, and the barvM is carried back, byy the force of the springs n; and z, to its normal position, by which the driver q is withdrawn from the staple-feeder P,land another staple falls in position to be next operated on. The lever J' may then be depressed, and thc nishcd slat be withdrawn freni the holders I for a repetition ci' the operation in like manner.

It should here bc'observed that a small groove is`cut in one of the revolving holders, I, along the aperture occupied by the slat, to allow the staple in the edge of the slot to pass through said aperture.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The revolving heads I, constructed with apertures therethrough, corresponding with thc form of the' cross-section of the slat, for its insertion therein endwise, substantially as set forth.

2. The combination ofthe arms H H', carrying the revolving heads I, the wheel X, segmental rack J, and notched huhf, all supported on the rock-shaft Gr,` for operation substantially as described. i

3. T he arrangement and combination of tho sliding bar M and head Nwith theholding-block W, operating together by means of the wrist t, too r, and springs z z', substantially as shown and described.

4. The staple-holder, supported on the sliding head N, consisting of two vertical standards, p'p", provided with a. lower outlet at right angles to their position, for the passage lof and to guido n. single staple, when propelled by the driver g, substantially as set forth.'m I l v L. s. COL'BURN.

I Witnesses: i A. R. HILLYEa,

L. L. WILLcu'rr.

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