US148741A - Improvement in ore-crushers - Google Patents

Description

A. J. GDAY.

Ore-Crushers. a

N0 148,74], Patented March17,1874.

ANDREW J. oDnY, orI

IMPR-VEMENT'IN LELAND, MICHIGAN.

ORE-CRUSHERS.

Specification foimingpart of Letters Patent No. 148,741, dated March 17, 1874; application filed February To all whom t may concern.'

Beit known thatI, ANDREW J. ODAY, of Leland, in the county of Leelenaw and State of Michigan, have invented an Improvement in Ore-Crushing and Rock-Breaking Machines, of which the following is a specication:

The nature of this invention relates to an improvement in that class of rock and ore crushing machines wherein an inclined dieplate pivoted at its upper corners to the main frame is vibrated by a system of compound levers acting upon its lower end, to crush the material placed between the vibrating and a stationary vertical jaw. The object ofthe invention is to so construct the machine as to combine great power and crushing capacity with the least weight and cost, and to double and quadruple the durability of the head and jaw dies, respectively.

Figure 1 is a perspective view of the machine. Fig. 2 is a central longitudinal vertical section at a: Fig. 3 is a horizontal section of the head and headfdie at y y. Fig. 4 is a cross-section of the jaw-die.

In the drawing, Arepresents the main frame, cast in the form of an oblong square, open at one end, across which is journaled, in bearings a, the driving-shaft I3, having a crank, b, forged in its middle, to which is strapped a connectingrod, C, whose lower end'is pivoted in the forked rear end of a lever,.D, which is pivoted by its trunnions c in the plumberblocks A under the main frame. Above and behind the trunnions c a wrist-pin, d, is transversely fixed in said lever, each end of which pin receives a link-bar, E, whose other end is pivoted betweenlugs f cast at the posterior corner of a vibrating jaw, F, by a pin, c, passing through the two links and the three lugs. The upper end of said jaw is pivoted to the upper part of the frame by a transverse shaft, g, so that in the rotation of the driving-shaft B, the lower end of said jaw will be alternately forced toward and retracted from the head, to crush any material placed between it and said head to a neness equal to the full opening at the lower end, or less.

In practice it has been found necessary to face the jaw and head of frame with chillediron dies or plates, to protect them against the abrasion of the material acted upon.

The hardest chilled headdies, where the machine is used for crushing black and specular iron ores, will last, on an average, five or six days', and the jawdies, three or four days, and frequently not one days running, when it must be replaced at a heavy expense.

Aside from the advantages in the construea tion of this machine as a crusher, a still greater advantage is obtained from the peculiar construction of the die-plates, which forms the sec= ond part of my invention.

As is well known to users of this class of rockbreakers, the greatest wear is upon lthe lower faces of the plates. These I make in such a manner that they can be inverted to bring the unworn top ends to the bottom, and to double this advantage I make them doub1e= faced, so that when the vertical corrugations or projecting ribs are wholly worn away on one face a fresh face can be presented to the work by simply reversing the dies.

G is the die-plate at the head or end of the machine, having vertical ribs or sharp corrugations h on both faces, loosely placed at the head of the frame, and supported by a stirrup below. This plate may be adjusted toward the jaw by liners placed between its back and the end girt of the frame. To hold it in place a strap, i, passing around the head of the frame, with pinsg passing through slots in the frame into the sides of the die, may be employed, or any equivalent device which will accomplish the purpose. H is the jaw-die, similarly constructed, with the addition of a groove running across the upper and lower ends. The groove at the lower end rests upon a flange turned up from a strap, 7c, bolted to the lower edge of the jaw, while the upper end is confined by a plate, l, slipping into the upi per groove andbolted to the face of said jaw, as seen in Fig. 2. The jaw may be cast with a flanged lip running across the lower edge to support the lower end of the die 5 but, as it would be liable to break in use, I prefer to einploy the flanged strap k, which answers the same purpose and is not liable to break, but if broken is easily replaced.

The original Crusher patented by E. W. Blake, June 15, 1858, had the jaw provided with a corrugated face, andasingle=faced head die, and when the face of the latter was worn it had to be replaced with another die, While the entire jaw had to be renewed When Worn. Latterly, an attempt Was made to provide the jaw With a movable die-plate by bolts passing through the die and jaw. As soon as the boltheads Were Worn awa-y, the bolts would drop out, and pieces of ore or rock Wedging into the bolt-holes would crack theplates. These plates were not reversible, and both they and the head-dies Were sin gle-faced.

While I disclaim, broadly, the invention of movable head and jaw dies,

What I do claim as new, and desire to secure by Letters Patent, is-

1. The reversible double-faced die=plate H, having grooves upon its ends, and adapted to be used with ends and sides interchangeably, in combination with removable stops k l, subA stantially as described and shown.

ANDREW J. oDAY.

Witnesses H. F. EBERrs, H. S. SPRAGUE.

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