US319735A - Machine for pointing wire nails - Google Patents

Description

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S. LORING 8v E. S. MORTON. Y

MACHINE POR P OINTING'WIRB NAILS.

Patented June 9, 1885.

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MACHINE FOR POINTING WIRE NAILS. No. 319,735. PatentedJune 9, 1885.

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Pme'ntedJune 9, 1885.

(No Model.)

S. LORING 8v E. S. MORTON. MACHINE FOR POINTING WIRE NAILS.

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mi UNirnD STATEa-PATENT @Lirica SAMUEL LOEING, OF DUXBURY, AND EPHRAIM STEPHEN MORTON, OF PLYMOUTH, MASSACHUSETTS.

MACHINE FOR PolN'TlNc WIRE NAlLs.

SPECIFICATION :forming part of Letters Patent No. $19,735, dated June 9, 1885.

Application filed September l0, 1884.

To cil/ZZ whom it may concern:

Be it known that we, SAMUEL LORING, of Duxbury, in the county of Plymouth, and EPHRAIM S. MORTON, of Plymouth, in the countyv of Plymouth, both in the State of'Mas-` sachusetts, have invented certain Improvements in Machines for Pointing Wirev Nails and other Articles, of which the following is a specification.

This invention has for its object to provide an improved machine for forming true conical points on wirenails; and it consists, as awhole, in an organized machine comprising a rotary grinding-wheel, a, a fixed guide, and a moving belt, between which a series of nails may be held with one end of each nail in contact with the wheel, the movement of the belt causing said nails both to rotate and move progressively along the wheel, a chute or raceway to feedl the nails to the point where they meet the belt and are moved thereby into the space Of the accompanying drawings, forming a part of this specication, Figure l represents a top view of a machine embodying our invention. Fig. 2 represents a perspective view of a portion of the chute, the fixed guide, the moving belt, and the spring device. Fig. 3 represents a front elevation. Fig. 4 represents a partial front elevation, the portions at the right of line y y, Fig. 5, being removed. Fig. 5 represents an end elevation showing the supporting-bed in-section. Fig. 6 represents a section on line x x, Fig. 3.

The same letters of reference indicate the same parts in all the gures.

In the drawings, a represents a grinding wheel or cylinder, of emery or other suitable material, mounted on a substantially horizontal arbor, b.

c represents a fixed supporting bed or base on which rests a plate, d, supporting the devices hereinafter described, whereby the nails to be pointed are presented to the grindingwheel. On the plate cZ are standards e e, to which is affixed a frame or bracket, f, extending along one side of the wheel. To the frame (No model.)

f is attached a plate, g, which is offset at its outer side to form a shoulder, 2.

h represents a plate secured to the plate g by screws i', and having a iiange, j, projecting over the shoulder 2 and separated from said shoulder by a space sufficiently wide to receive the thickness of the head of a nail, k, as shown in Figs. 5 and 6. The surface ofthe plate g below the shoulder 2 is slightly roughened or corrugated, for a purposehereinafter explained.

Z Z represent vertical arbors having bearings in the plate cZ and bracket or frame f, and provided with gears m m, which are connected by a central gear, n, journaled on a stud affixed to the plate d. To the central gear, n, is affixed a worm-wheel, o, meshing with a worm on a driving-shaft, p.

The arbors Z Z are rotated positively by the described gearing. To the upper ends of the arbors Z Z are affixed pulleys q q', on which runs a belt, i", preferably of rawhide, backed by a chain belt, s, which bears directly on the pulleys q q', while the belt r bears against the outer surface of the chain belt. The portion of the belt nearest the grinding-Wheel runs substantially parallel with the corrugated surface of the plate g below the shoulder 2, and is pressed toward said surface by a series of pressure-blocks, t, pivoted to arms u, and pressed against the inner surface of the chain belt by springs o on rods, which are pivoted to the arms u and slide in orifices in a iiange on the frame f. The arms u are pivoted on a rod, fw, supported by the frame. a represents an inclined chute or raceway formed to conduct heated wire nails 7c from a reservoir (not shown) to the point where each nail as it moves down the chute will bear simultaneously against the belt i and the corrugated surface of the plate g. Each nail when it reaches said point is carried along said plate by the motion of the belt, and is at the same time caused to rotate by its contact with said corrugated surface. The heads of the nails project over the shoulder 2, which supports the series of nails as they are thus moved along. The opposite ends of the nails thus grasped and moved bear against the periphery of the grinding-wheel. The result of the IOO . finger c.

progressive and rotary movements of the nails while in contact with the wheel is the formation of true conical points on theinails,

as shown in Fig. 4. After passing along the entire length of the wheel the nails drop from between the belt r and plate g into a suitable spout or receptacle. To prevent the nails from interfering with each other while they are being pointed, we provide a separator composed of a spring-arm, b', secured at d to t-he frame f, and having a inger, c', which normally stands in the path of the nails as they pass between the belt r and plate g. A series of pins, f on the pulley g moves under the free end of the arm b and raises said arm intermittently. Each time that the arm b is thus raised one nail is allowed to pass the Contact between the nails while they are being moved progressively and rotated is thus prevented.

d d represent idlepulleys journaled on plates e e', adj ustably secured to the frame f, and bearing against the rear portion of the belt to keep the same taut. The frame f is adapted to be adjusted vertically on the standards e e, so as to present the points of the nails tothe wheel at any desired height, and thus obtain any desired taper at the point. To this end the frame f is secured to the standards e f by bolts-g', Fig. 5, passing through slots in said standards.

Vertical screws h h in the frame f bear on the upper ends of the standards and constitute ladj ustable stops. The necessary horizontal change of position of the frame required by any vertical change is afforded by the adjustable supporting plate e, which is held in any position to which it may be adj usted by set-screws t" i', working in lugs on the base c, and bearing against the plate d, as shown in Fig. 5. It will be seen that the spring-pressure blocks tkeep the belt in close contact with the nails while they are being rotated and pointed.

The conical points formed by our improved machines are necessarily at the center of the nail; hence the nail will not be deflected from a straight line while being driven. The points of wire nails as formed by dies are liable to bemore or less one-sided, and when so formed are liable to cause the nail to deviate from the desired direction when being driven. This difiiculty we entirely overcome.

This improved machine may be used for pointing other analagous articles-such as rivetsgtacks, brads, &c.

We el'aim^-----f f y' 1. In an organized IHine for pointing headed wire nails and other like articles, the

y combination of a chute or raceway, a grinding-- wheel, a fixed plate having a continuous surface or support for the Shanks of the nails and a shoulder to support the heads of the nails, a belt running substantially parallel with said fixed plate and causing the nails to roll along the latter, devices, substantiallyas described, for pressing the belt against nails interposed between said surface and belt, the belt and cooperating fxed plate being arranged to receive the nails from the raceway and to present their ends to the wheel, as set forth.

2. The combination of the grinding-wheel, the chute, the fixed shouldered plate forming a bearing for the nails, the belt and its pressure devices, the separator, and means, substantially as described, for operating the separator, whereby the nails are kept separate while being presented to the grinding-wheel, as set forth.

3. The combination of the grinding-wheel, the frame f, the fixed shouldered plate g, having a substantially vertical surface, the belt r, and pulleys q g', supported by said frame, and means, substantially as described, whereby the frame may be adjusted vertically and horizontally to modify the form of the points made y by the grinding wheel, and positively held at any position to which it may be adjusted, as set fort-h.

4. The combination of the grinding-wheel, the shouldered plate g, having a corrugated surface below its shoulder, the belt r and its supporting pulleys, and the spring pressure blocks t t, as set forth.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, this 4th day of September, 1884.

Witnesses:

GEORGE E. BENSON, FRED H. ELLIS.

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