US86817A - Improvement in polishing needles - Google Patents

Description

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Letters Patent N 0.- 86,817, dated February 9, 1869i INIPRO'V'EIMENT IN- POLISHING. NEEDLES The Schedule referred to in these Letters Patent and making part oi the same- To all whom it may concern.-

Be it known that I, O. 0. CROSBY, of New Haven, in the county of New Haven, and State of Connecticut, have invented a new Improvement in Machine for Polishing Needles; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, andwhich said drawings constitute part of this specification, and represent, in

Figure 1, a top view;

Figure 2, a front view;

Figure 3, a transverse section on line a at; and in Figure 4:, a transverse section through the carryingscrews, enlarged;

This invention is .designed'for polishing or finishing sewing-needles,afterthey have been tempered, the object being to avoid the usual hand-labor, by constructing the machine so as to receive the unpolished. needles from a hopper, and rolling them over, so as to be acted upon by the polishing-cylinders, and delivering them. firom the machine polished and finished complete.

To enable others to construct and use my improvement, I will proceed to describe the same as illustrated in the accompanying drawings.

Ais the bed-plate, upon which, in proper bearings 13, the driving-shaft O is arranged, so as to be revolved by the application of power thereto in any convenient manner. V

O is the h0pper,.itslower end or mouth, a, being of the width of the diameter of the needles to bepolished.

Beneath the said month are arranged two slides, b and d, operated respectively by cams, D and E, on 'thedriving-shaft, through levers b and d, the said .slides being shown through the-hopper, as seen in fig. 1, the hopper broken awayfor the purpose.

The lower slide 11 passes under the mouth of the hopper, so that the column of needles rests thereon; then the upper slide b, which is adjusted to the proper relative position of the slide (I, so as to pass in above the first needle, and between that and the second; then the lower slide d is diawnlback, and a single needle is then delivered; then the slide d returns beneath the hopper, the slide bis withdrawn, the column of needles falls upon the lower slide, the upper slide again enters, as before, and a second needle is delivered, and so continuing, delivers a single needle at each complete operation' 'of the two slides.

Beneath the mouth of the hopper, and longitudinally aoross the machine, extend two screw-shafts, F- and H, the front, or H, :being a right-hand, and the other, or F, a left-hand screw, or may be vice versa, and arranged beneath he mouth of the hopper, so that the needles are delivered into the thread of the screws lying at right angles to the axis of the screws.

The said screws are arranged in a proper support, Gr,

and are caused to revolve by connection with the driving-shatt, as seen in fig. 1, so as todraw the needles delivered into the said screws'across the machine from the. hopper.

Near the hopper is arranged a transverse shaft, 1,

and at the other end of "the machine, a corresponding.

shaft, K, caused to revolve by worms f f on the drivlug-shaft, and upon each shaft respectively is arranged a pulley, I and K, the said pulleys being-in a position central between the screws, as seen in fig. 1, and a band, L, around the said two pulleys, its lower surface lying in close proximity to the bed or'support between the screws, as seen in 4, enlarged, and the direction of the revolution of the said pulleys being such that the lower side of the band moves in the direction of the draught of the screws, but at a velocity twice as fast as the draught of the screws, so that the needles rolled along by the revolving screws, and beneath the band L, (the said band I lying upon the needles,).and moving twice as fast as the needles, the needles will, by the combined action of the revolving screws and moving band L, be caused to revolve or roll along upon the surface orbed between the screws. the depth of the thread in the screws, relativeto the bed h, or rest between the screws, being such that the needle will rest upon the said bed, and .this bed may be of any suitable material, to prei'zeut injury to the needles while rolling thereon. The needles are fed into the screws so that their head-ends project upon one side, here represented as the back side. I

Upon the back side I arrange a polishing-cylinder, M, hung in a frame, N, and caused to revolve rapidly by the application of 1 power thereto in any convenient manner.

- The said cylinder'is coated with any suitable ma- I terial for polishing-purposes, and the frame N is caused to vibrate, so as to carry the polishing-cylinder toward and from the screws, by means of a cam, P, on a shaft,

B, through levers S and T,'(se'c figs. 1 and 3.) This vibration passes the cylinder M over the surface of the needles, while the latter, slowly revolving, are polished by the polishing-cylinder M. H

In order to securely hold the needles. in their position, while. beingpolished, as well as to guide the band L, I arrange, upon the-upper surface of the under belt, shoes 41, thesaid-shoes' being constructed with a flange, projecting down-over each edge of the band, as seen in fig. 3, and borne down by springs m with sufiicient force to sustain the needles in their proper position, and yet so as to allow the band to be drawn freely thereunder. The shoes also serve to guide and hold the band in its proper path while rolling the needles. And on the frame N, in the rear of the revolving cylinder, I arrange'a bar, n,which, as the frame advances, strikes the heads of the 'needles, and forces them into an even position,if they shall, in their transfer, have been displaced, the said bar being adjustable for different lengths of needles. And beneath the needles, upon the support G, or at other convenient point, I arrange a cushion, r,-(see fig. 4,) upon which the needles bear, as the polishing-cylinder M passes over their surface, this cushion r being arranged upon springs s, or their equivalent, soasto be self-adjusting. 3

The frame N is'supportcd in bearings B, so as to be adjusted to change the arc of the circle through which the polishing-cylinder moves while passing over the needles.

Passing from under the 'first cylinder M, the needles are forced through, so that their points project upon the opposite side, to be, in their turn, polished, and are so forced by a bar, U, actuated by a cam,W, arranged so as to operate against the heads, and gradually force the needles. through, as they advance, until, having arrived at the end of the bar U, they are forced sufficiently far through, that the remainder of the needle, not polished by the first operation, may be polished by the second, and this is done bythearrangement of a cylinder, M, in a frame, N, in like manner as the first cylinder; the frame hung and adjusted in. like manner in its bearings R, and provided with its cushion cheneath, andlwith the shoes and adjusting-springs m, also in like manner as-the first, the frame N being actuated by a cam, P, through levers S and T. The needles passing under the polishing-cylinder M, their point-ends are finished up to and meeting the first pol ished surface, and thus pass from beneath the cylinder M'complete, thence carried on from under the band, and discharged from the machine.-

During the last polishing,'the needles are retained in position to be properly guided, by a bar,Y, arranged in the rear of the screws, so that the heads bear against the said bar, as they pass along the second polishingcylinder.

The two cylinders may be reversed, or the needles may be polished either end first. I'prefer, however, the arrangement or manner of procedure described.

Having thus fully described my invention,

What I claim as new and useful, anddesire to secure by Letters Patent, is

1. The arrangement of the two screws F and H, revolving toward each other, and their axes parallel to each other,and both in same plane, so as to receive and transfer the needles, substantially in the manner inders M, operating so as to polish the surface of the needles, substantially as described.

5. In combination with the screws F and H and band L,-the' shoes 2', arranged to bear upon the band L, and to press the latter down upon the needles, substantially as and for the purpose specified.

6. The arrangement of the polishing-cy' linder or cylinders M and carrying or revolving-device for the needles, with the cushion *rto support the needles, substantially in the manner and for the purpose set forth.

7 In combination withthe first polishing-cylinderM, the carrying and revolving-devices for the needles, and

.the polishing-cylinder M, thebar U, arranged was to move the needles, substantially in the manner and for the purpose set forth.

8. In combination with the carrying and revolvingdevices for the needles and the polishing-cylinder M, the bar Y, arranged so as to guide and sustain the needles, substantially in the manner and-.for the purpose set forth.

G. O. CROSBY. Witnesses:

J. H. SHUMWAY, A. J. TIBBITS.

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