US149771A - Jambs j - Google Patents

Description

l. l. MGCABTNEY.

Spike Patented April 14,1874.

ATTEST.V

VS'rArns'l- PATENT OFFroE;

.mlninslnr MocAnrNnY, on sr. Louis, Mssonnr.

IIV'ISIVM NT IN 'sPlkE-MACHINES'. y

specification forming `pa-rter Lettesratentfno. 149,'7? n, datennpn 14', 1874; appiioatwithnien" March 7, 1874. I

To allwhomz't may-concern: y Be it known that l', JnMEs'J. MCGARTNEY,

of St. Louis, in the count'yof St. Louisjand State f Missouri have invented a certain 'Improven Bon and spike Machine, of which the following is a specification:

This invention relates to the die-block on which is held the blank for the spike or bolt, to the combined griper and shear,and tothe construction of the die-block with a countersunk part for the reception of the blank, the side of the countersink being chilled or provided with a steel cutter, as desired, so as to form the fixed blade of the cutter or shears, the movable jaw being formed by the edge of the griper or holding die, which, in its downguide-flange of the die-block, so that in its descent it will be guided by said flange to cut in a plane vertical to the axis of the blank, although the arm moves in the arc of a circle.

The operating mechanism of the machine will be the usual cam, eccentric, and crank movements, &cl., substantially as shown.

Figure 1 is a side elevation. Fig. 2 is a sectional elevation, showing the dies arranged for making bolts. Fig. 8 is a detail section, showing the construction of the dies for making spikes.

A is the frame of the machine; B, the main driving-shaft, carrying a heavy driving ilywheel, B. G is a crankdisk, which intermittingly operates `the feed-rollers DD by means of the connecting-rod C', pawl c, and ratchetwheel c', secured to the shaft of one of the feedrollers l), the purpose being to feed the blank forward while the header and griper are bein g retracted, prior t0 their forward movement in making the next bolt or spike, and at the same time allow the rolls D D to remain stationary (so as not to feed theblank-rod)while the bolt, Stc.,ist` being headed. y `E isthe eccentric, which imparts 'a forward and backward movement tothe header-block y F, which moves on Vadjustable slides Ff, andjis prevented from side movement by guide-lugs G, secured'to the frame A. of the machine.` fisthe-header-die, the face of which is sunk to the desiredshape of the head-of the bolt or spike. y His thecam, which operates the oscillating arm I, pivoted at i in the frame A, and having p ivotedat lits other end the griping or holding and cutting jaw or die J, the lower end j of which, in addition to the function of holding the blank while being headed, also forms the movable blade or jaw of the cutter or shears that cuts off the blank from the blank-rod a and said end of the die J is forced out andV kept in contact with the vertical flange l of the die-block K by a strong spring, j', so that the cutter-die J will move in a straight direction, though its actuating-arm I oscillates on its trunnions i.

K is the die-block, which may form part of 0r be separate from the supporting-casting K', as desired. Said die-block is so arranged as to receive the blank-rod a from the rolls D D, into a guide-groove in its top face, the end k ofthe groove forming the fixed blade or jaw of the cutter. The gromreis covered over by a semicircular throat piece or cover, L, having a flaring mouth for receiving Athe blank-rod a, and a vertical flange, l, for the griping-die J to abut against and be guided by, so that it will descend in a vertical straight line, instead 1 of a circular line, which it (the die J) would do if it were secured iixcdly in its oscillating arm I. The objection to the griping and cutting die J descending in a circular line is, that it cuts oft' the ends of the bolt on a bevel, in which case not only would the point of the bolt be imperfect, but it would be almost impossible for the header to form a perfect head on the bolt; but by cutting the blank. in a line vertical with its axis, a perfect head can be formed by the header. There being no excess of metal on either side, the metal is spread evenly by the header, and the head is evenly balanced. The griper-die J in its descent cuts off the blank a', (which is that part of the bar projectin g outside the throat-piece L,) and holds it downV against the die-block K, while `the rw ard and forms a head eid, and on the ascent of he headed bolt, Ste., is block k (so as to fall into a rec i e underlie 1. the machine) by a pivoted tripper, m, arr nged n a recess in the die-block K, and which is operated by rod m', connected to the Eilerumed arm M, which is oscillated by the n pand-down movement of the gripel armIthron rh the connecting-rod t.

Fig. 3 hows the ation of the dies for making s illes. The dies KJ in this case are formed tapering or i wli led at one end, so as to form the tapering` point on the spike-blank after ou n Y it olf.

When used for making spikes the die .I may be fixed in its arm I the curved movement of Which-is not objectic nable in this case, as it is header F on the l the gril er die J t pushed cut of the def' moves Mk thus h not requ ired to have the blank ends ont square. The operation is as follows: The heated blank-rod a is fed ntermittingly to the cnttin g- While the cutting and griping die J descends to cut off and hold the blank dn `the nter- Val that the header is moving fo aid to forni EL head on the blank; and during a back and upward movement of the head 1 and die J, the nished blank is forced out c e die K by the trpper m M m i', and a fr portion of the blank-rod t is fed (by the fee -rolls D D and operating mechanism) under he jaw or die I, for the formation of the snc xeding bolt or spike.

I claim as my 1. The die-b1 ck K L, cover L, cutter and holder J j, arm l and-headerF f, all com ined and arranged s1 ostantially as set forth.

invention- 2. The oseil hn arm or holder I ea jing a pivoted cutt and griping jaw or die, J, in combination Wdh the die-block K 7c, with the gnide-iange Z, md header F j", snbstantiall as set forth.

In testimony of said invention I have hercoff mechanism by the feed-rolls D D, 'operated by pawl and ratchet c c', connecting-rod C', and eranledsk G on main driving-shaft B, the feeding movement taking pla/ce While the header and griping and cutting dies are retracted, and the blank-rod remains stationary unto setmy hand in presence of witnesses.

JAMES J. MCGARTXEY.

'Witnesses SAML. KNIGHT, ROBERT BURNs.

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