US1824272A - Hammer crusher - Google Patents

Description

Sept. 22, 1931. c. A. JAMISON HAMMER CRUSHER Filed Aug. 28, 1928 mvzrrrom CharlesAJamlson,

Patented Sept. 22, 1931 J UN1- reo;S ATES PATENT OFFICE CHARLES A. JAMIsoN, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO PENNSYL- VANIA CRUSHER. COMPANY, or PHILADELIHIA, PENNSYLVANIA, A CORPORATION OFv NEW YORK HAMMER CRUSHER Application filed August 28, 1928. Serial No.'302,562.

My invention relates to hammer crushers of'the type substantially as set forthin my pending application for patent for improvements in hammer mills, filed August 25, 1928, Serial 'No. 302,108, wherein a hammer-carrying structure is shown as rotatably mounted withrespect to a cage or screen, and the principal obj ect'ofmy' present invention'is to pro vide supporting and adjusting mechanism for one end of the cage or screen forming the lower part of the crushing chamber that may be kept clea'rof the material being crushed and avoid fouling and 'blinding'of the links ofthe chain.

My invention has been applied to hammer crushers of the type in which the cage or screenis pivotally supporte'd a-t one end by a relatively fixed shaft journaled in the frame or base of thecrushing structure, and hung at its opposite en-d from chains passing over sprocket. wheels 1 mounted on a shaft'which maybe journaled in the walls of the frame or casing and which may be operable by a hand wheel, either directly or-through atrain offgearing, to raise'or lower the end of the cage. Suchmechanism may be so arranged that motionimparted to saidshaft will effect movement of the chains in either direction, as the case may be, to adjust the cage or screen relatively to the'path of the hammers as conditions of crushing or'wearupon the hammers may requirei These and other features of my invention are more. fully described "hereinafter; reference being had' to the accompanying drawings, in which: I

Figure'l is aside elevation, partly'in'section, of cage-adjusting mechanism arranged in accordance with myinvention, and 40 Fig. 2 is 'an'endelevation, partly in section on the line IIII, Fig. 1;

My inventioniis shown as applied to a 'crushe1".oftl1e type set forth'in my pending application noted above, .and theco-pen'dmg application of George WQ Berton, 'filed August 25, 1928, Serial No. 302,080, wherein the S de walls or frames. ofthe structure are carried well'ab'ove the ax s of the hammer-carry- 111g rotor; .the shaftfcarrying the sprocket wheels over which the'chains supporting the m'ent to the end of the screen.

cage or screen pass, being journaled in the side walls of this portion of the frame.

The frame of the crusher may be made up of side members 1, with cross-connecting members 2 and 3, at the respective ends of the same. A cage or screen which may comprise side members 4, hung from a shaft 5 disposed at one end of the crusher structure, and provided with the usual spaced cross-bars indicated at 6, is disposed in the lower portion of the crusher structure and is adjustable with respect to the path of the rotary beaters or hammers carried by a rotor structure mounted in the crushing chamber above said cage onscreen. This rotor structure, of a type usually employed with crushers of this character, may comprise a hammer-carrying part of the crusher is adjusted on its pivotal support 5-with respect to the path of the hammers 18, for various crushing conditions or to compensate for wear of the hammers, and in the present instance I have shown adjusting means in the form of chains 14, which may be secured to shackle members 15, connected to a cross-bar or shaft 16 connectingthe ends ofthe side members 10f the screen such chains passing over sprocket wheels 17, carried by a shaft 18, which may be operatively connected to a hand wheel 19, either directly or indirectly, whereby motion may beimparted to said shaft to raise or lower the chains and impart similar move- Similar adjusting means for the cages or screens of hammer crushers have heretofore been employed, but the chainsand chain wheels have usually been arranged directly adjacent the end of the-cage or screen where they are and endplates to which cal flanges forming spaces for the reception subject to fouling by wet or sticky material which, collecting in the links of the chain, blinds the same and prevents their proper engagement wi.h the sprocket wheels.

In carrying out my invention, the shaft 18, carrying the sprocket wheels 17, is theposed some distance above the end of the cage or screen and out of the way of the material passing through the crushing structure; such shaft being arranged in a recess 3 in the cross-member 3. As illustrated in Fig. 2, the chains 14 are brought up through openings 20 in the side flanges of the upper portions of the frame and are disposed on the outside ofsuch frame between vertical flanges 1 of the same; such arrangement disposing the sprocket wheels 17 and the greater portion of the chains 18, wholly outside the crushing chamber. In order that complete protection may be afforded such chains and chain wheels, I preferably provide cover plates or housings of light sheet metal, indicated at 21, which may be secured to the side frames by screws 21 or in any other suitable manner.

Machines of this type are usually provided with a tramp iron pocket, and such recess is indicated at 22, and may be formed in the cross-member 3; a swinging cover plate, such as indicated at 22, being usually provided forthe same. In the present instance this pocket is arranged entirely independently of the screen, in the cross-member 3 and below the shaft 18 carrying the sprocket wheels 17,

so that discharge of any material foreign or otherwise into and from such pocket can not aflect such shaft or the sprocket wheels, or the chains 1 f passing over the latter and supporting the cage or screen.

My invention provides simple and eflicient means for keeping the adjusting chains in clean and operative condition at all times.

I claim: 7

1. In a hammer crusher, the combination with a casing having a crushing chamber with vertical side walls, a hammerecarrying rotor structure disposed within the same, a cage forming the bottom of said crushing chamber and cooperating with said hammers and a pivotal support normally occupying a fixed position for one end of the cage while the opposite end of said cage is susceptible to raising and lowering movements to adjust the surface of the same relatively to the path of the hammers, of supporting chains passing outside the side walls of the casing and connected to said movable end of the cage, sprocket wheels over which said chains pass 7 also disposed outside the side walls of the casing; said side walls having external vertiof the sprocket wheels and the upper portion of the chains which pass over the same and horizontal flanges slotted for the passage of said chains, and a manually operable shaft j ournaled in said side walls and carrying said sprocket wheels.

2. In a hammer crusher, the combination with a casing having a crushing chamber with vertical side walls, a hammer-carrying rotor structure disposed within the same, a cage forming the bottom of said crushing chamber and cooperating with said hammers and a pivotal support normally occupying a fixed position for one end of the cage while the opposite end of said cage is susceptible to raising and lowering movements to adjust the surface of the same relatively to the path of the hammers, of supporting chains passing outside the side walls of the casing and connected to said movable end of the cage, sprocket wheels over which saidchains pass also disposed outside the upper part of the walls of the frame the side walls of the frame having external vertical flanges forming spaces for the reception of the sprocket wheels and the upper portion of the chains which pass over the same and horizontal flanges slotted for the passage of said chains to connections with the cage, a manually operable shaftjournaled in said side walls and carrying said sprocket wheels, and housings for the sprocket wheels and those portions of the chains disposed externallyofthe side walls of the casing- 3. In a hammer crushelgthe combination witha casing having a crushing chamber with vertical side walls, a hammer-carrying rotorstructure dis osed within the same, a cageforming the ottom of said crushing chamber and cooperating with said hammers,

and a pivotal support normally occupying a fixed position for one end of the cage while the opposite end of said cage is susceptible,

to raising and lowering movements to adjust the surface of the same relatively to the path of the hammers, of supporting chains passing outside the side walls of the casing and connected to said movable end of the cage, sprocket wheels over which said chains pass also disposed outside the upperipart of the walls of'the frame; said walls having flanges forming spaces for the reception of the sprocket wheels and the upper portions of the chains which pass over the same and portions of said side walls being slotted for the passage of said chains, connections between one end of said chains and one end of the cage or screen, and means for imparting movement to said chains. 1

,4. In a hammer crusher, the combination with a casing having a crushing chamber with vertical side walls, a hammer-carrying rotor a, structure disposed within the same, a cage 7 formlng the bottom of said crushing chamber and cooperating with said hammers and a pivotal support normally occupying'a fixed position for one end ofthe'cage while the op posite end of said cage is susceptible to raising and lowering movements to adjust the surface of the same relatively to-the path of the hammers, of supporting chains passing outside the side walls of the casing and connected to said movable end of the cage, sprocket wheels over which said chains pass also disposed outside the upper part of the walls of theirame; said walls having flanges forming spaces for the reception of the sprocket wheels and the upper portions of the chains which pass over the same and slotted flanges for the passage of said chains to the cage connections; a manually operable shaft journaled in said side walls and carrying said sprocket wheels, a cross member forming one end of the crusher structure and having a tramp iron pocket and a recess above said pocket; the end of the cage supported by said chains being disposed below said tramp iron pocket, and the shaft supporting said sprocket Wheels being disposed in the recess of the cross member above said tramp iron pocket.

In witness whereof I have signed this specification.

CHARLES A. J AMISON.

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