US71148A - Daniel dbawbaugh - Google Patents

Description

M, A mh/M N.PETEHS. PHOTO-LITHOGRAPHER, WASHINGTON, D C.

"4 machinery for making cut nails, wherein itis required to'r'everse the nail-plate after every cut, for the purpose he ally, so as `to change-the obliqpity of cutl across the nail-plate,lby loosening thel pivot-bolty whichsecures it to /f l' @uiten `faire @anni @Hita DANIEL D'RAWBAUGH, or EBERLYS MILL, PENNSYLVANIA; Lata-A Patent No. 71,148, dared November 19, 1867.

IMPROVBD NAIL-PLATE FEDING DBVIGB.

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Be it known that I, DANIEL DRAWBAUGII, of .Eberlys Mill, Cumberland county, State of Pennsylvania, have invented anew and improved Nail-Plate Feeder; and I do hereby declare that the followingis a. full, clear, and exactdescription thereof, reference boing had to the accompanying drawings, makng a part of this specification, in whichf Figure 1 is aside elevation of the improved mechanism for feeding and turning nail-plates. Figure 2 is a similar view of the same parts when thrown out-of operation. Figure 3 is a top view o f iig. 1. l Figure Litis a sectional view in detail of the upper end of the post which supports the outer end of the nail-rod, showing the manner of pivoting the tubular support.

Figure 5 shows the spring-fingers on the upper end of the arm which rotates the nail-rod. Similar letters of reference indicate correspondingparts in the several figures. This invention relates to certain 4novel improvements on machinery for feeding nail-plates `to the cutters of of making tapering nails.

Previous to my invention, the work of feeding .the nail-plates from which the nails1 are out up,to the cutting-jaws was effected automatically by a weight acting upon the nail-rod, so as to move this rod in a direc tion with its length, and, in conjunction with this endwise movement of therod, it was oscillated aboutv its longitudinal axis by devices which received their motion from themain driving-shaft of the nail-cutting machine.

The nature of my invention consists in giving toa nail-rod, which is free to vibrate and also to move in a direction with its length, an intermittent rotary motion; and also in `providing for stopping the motion of the feeding devices automatically when a nailfplate hasbecome too short to continue cutting, as will be hereinafter described. It further consists i'n a novel mode of adjusting the nail-rod supports, and setting them so as to vary the obliquity of the cut, according to the degree of taper required of the nails, as will be hereinafter described.

.To enable others skilled in the art to understand my invention, I will describe its construction and operation.

In figs. 1, 2, and 3, of the accompanying drawings, I have represented my invention applied to a portion A of a well-known nail-cutting machine. A represents the frame of such machine, B the stationary cutter-bed, t with its cutter, a, arrangednpon an inclined lplane,' C the vibrating cutter, with its spring-stop, a', against which the end of the nail-plate is fed before the operation of cutting. .D is a pitman-rod, which is connected at oneend to the lower end of a vibrating lever, (not showm) that receives its motions from a cam on the main driving-shaft, and at the opposite: end this rod is connected to a'vibrating larm, E, whichy rotates the nail-rodiF.

A bracket, A', which is secured to the bottom of the frame A, extends outward and upward, and forms the inner support for the devices which guide the inner end of the nail-rod F. This bracket can be adjusted laterthe bttomfof the, fran:ie- A,y and swinging it around on said pivot. The. outer part of the nail-rod F is supported upon the upper section of a vertical post, G, which is secured to a laterallyladjustable base-plate, Gr. The upper end of the vertically-adjustable section b of. post Gr is adapted for receiving a spherical enlargement, c, which is formed on a tubular bearing, c, and allowing this bearing to have a free rotary motion about its axis, and also a free vibrating motion. This ball-and-socket, connection is shown clearly in g. 4. .The tubular 1 bearing c is constructed with twospiral iianges, c c', on it, which are acted upon by the spring-{ingers d d, on the forked end of arm E, so thatcat every backward movement of this arm E the bearing c Will receive a halfrotation. When arm E is moved forward, or toward the nail-machine, the ngers d d do not turn the tubular bearing. The opening which is through the axis of the tube c is adapted for receiving the square portion of the nailrod F, and allowing this rod to receive a free endwise movement, as well as an intermittent half-rotary movement. The pitman-rod D, which communicates a vibrating motion to the upper end of arm E, has a notch ont in its lower edge, near its outer end, which notch catches over the edge of a plate, e, on arm E, through a vertical slot of which-the pitman-rodpasses. The extreme outer end'of the pitman-rod is connected by a rod, L e', to the short arm of a lever, H, which islpivotcd to post G, near its upper end, as shown in gs. 1 and 2.

When the longest arm of the lever H is supported upon the restf,` on bracket A', the outer end of the pitman-rod will be depressed, so as to allow its notch to engage with the lever or arm E; but when the lever H drops from the restf, as shown in iig. 2, the Pitman-rod will be disconnected from its arm E, and this arm will cease to vibrate. The object of this arrangement is to have the intermittent rotary motion of the nail-rod F cease when the nail-platc becomes too short, for which purpose the cam or toe-piece g, on the neil-rod, is so I arranged with reference to the length of the nail-plates, that when the latter become too' sho`rt in the nippeis a' vibrating movement to the weighted lever c.

F', this piece g will strike the spring g', and push lever H from its rest f, when rthc weightW will cause this lever to drop, as shown in fig. 2. By having thev toe-piece g adjustable longitudinally upon the nailrod,it may be adjusted for nail-plates of different lengths. That edge of the nail-plate P which is nearest the cutters is held down in placer upon the surface of the 'stationary cutter a by -means of a lightspring, S, which acts upon a hookcdrplate, S'. This plate S is pivoted to the inner face of the vertical portion ofthe bracket A' by means `whiclrwill allow it to rise and fall vertically, and at the same time to vibrate. The hook en one part of this plate is intended for receiving-under it the round part of the nail-rod F, and thus allowing spring S to hold this rod down in place with an elastic pressure when lever H is upon its restf and pitman-rod D is connected to its arm E, as shown in iig. 1. On the opposite edge of plate S' to the hook are projections, one of which is acted upon, when lever H drops from its rest f, by this lever, so as to throw upthe hook which keeps down the 4nailrod. The other projection allows lever H to move thehook over the nail-rod when this lever is lifted upon its rest. The hook on plate S' servcsas a guide for-the nail-rod, as well as a means for allowing the spring S to act upon it. To the rear end or shortest arm of lever H a dong spring-brake, I, is secured, the upper end'oi` which is forcibly pressed by the weight W against the periphery of a friction-wheel, J, when the lever H drops i from the restf. 'lhe wheel J is fast on a transverse shaft, z', which 4ha'sitsbearings upon the upper end of the adjustable section b of post Gr, as shown in figs. 3 and 4. Between the crotche'd, end of section b, and fast upon the shaft z', is a""grooved pulley, over` which passes a, cord,j, that is connected to a loaded lever, 7c, on the re'ar end of the nail-rod. The other end olf the cordjhang'ls downand has a weight.l Y, attached to it. The weight Y should he sufficiently heavy to feed the nail-ron toward the cutters, and to keep the'nail-plate u-p to the work, when lever H is upon'its restf. When this lever H drops from its rest, and thus brings the arm I-in contact with the friction-wheel J, the friction or resistance will" be greater than can be overcome by the weight Y, and hence this weight will not move the nail-rod forward. The nail-rod may be moved backward or forward by hand at any time for-the purpose of adjusting a nail-plate between the nippers P', or removing the pieo'es left after the operation ofrcutting. The cordjis attached to the shortest arm of the lever le, and the4 weight to its longest arm. This lever lc is attached loosely tothe rear end' of the nail-rod, so as to allow this rod to rotate freely, and by its vibration the nail-rod is held up to the work by a slightly-yielding pressure during its entire forward movement. By having the cord J attached to the weighted lever, which is hung on the feed-rod F, there'isalsc a lslight start given to the feed-rod, as soon as a nail-piece is cut off from the' plate; this start forward being produced by reason of the back movement of the feed-rod when the nail-piece is.severed from the plate, giving The movement of the feed-rod is also kept` in a sort of balance between the feed-weight proper and the auxiliary weight on lever lc, and thus a great deal of the bindingr action between the rod E and its bearing or guide is obviated. The auxiliary weight of lever k also acts as a sort of check upon .thclfecd-weigbt proper, and thus relieves the parts of the machine from sudden jars when a new feed of the nail-plate takes place.

The tube c is reduced inv diameter, where it'passes through the ball, and receives o n its end a nut or sleevescrew. This will allow the tube e, with its ilanges c', to rotate freely without turning its ball.

-Iu order to readily apply the feeding devices to any of the well-known nail machines, a divided eccentric, shown in iig. 6, is used, which is secured to the main drivingshaft bythe clamp-screw p, thus avoiding the necessity of changing the construction of such driving-shaft, or removing it from its bearings when' it is desired to apply the eccentric to it.

The rear end of the pitman-rod D is connected to a vibrating arm, which is acted upon bythe eccentric above mentioned, by means of a divided bearingfbox, shown in tig. 7. The rod D passes through this box and receives upon it two clamping nuts v a, by means of' which the two parts ofthe box can be set up snugly to the wrist-pin v', which pivots the box to its vibrating arm, and thus the wearing of the pin und box can be compensated for, and lost-motion" prevented. The nuts v v are also used for adjusting the box, so that the rod D willgive the proper movements to arm E. I

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

1. The combination of the spring-lingers on the vibrating yoke-arm E, and the spiral anges upon the tubulaibearing c, through which the nail-plate feeding-rod passes, for the purpose and in the manner substan- 'tially'as described.

2. The combination of the tubular bearing c, nail-feeder F, and universal joint e5, arranged substantially as and for the purpose described.

3. The combination of the loaded lever 7c, arranged upon theouter end of the nail-feeding rod F, with the cord, weight, and pulley, for feeding the nail-,rod with the nail-plate up to the cutters, substantially as and for the purposes described.

4. 'lhe hooked plate S' and spring S applied to the bracket A', substantially as described.

5. Providing for automatically stopping therotary motion of the naibrod, and at the same time releasing `this od from the hooked plate S', by means substantially as described.

6. The combination of brake-rod I, onlevcr H, with a friction-wheel on the shaft i of the pulley J, substantially as described. t

7. The adjustable post G b, in combination withthe laterally-adjustable bracketI A', substantially as described.

DANL DRAWBAU GH.

Witnesses.

J. B. DRAWBAUGH, LAFAYETTE CRULL.

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