US1700266A - Coal breaker - Google Patents

Description

Jan. 29, 1'929. 1,700,266 A. LOZA! ET AL l COAL BREAKER Filed June l, 1926 2 Sheets-Sheet 1 Figi.

Jan. 29, 1929.

- 1,700,266 A. LozAl ET AL COAL BREAKER Filed June 1,' 1926 2 Sheets-Sheet 2 i Patented Jan. 29, 192.9.

UNITED STATES,l

AIABLE LOZAI AND ACHILLE IiERGIUfOF PETITE GUEVILLY, FRANCE.

con. BREAKER- The present invention relates to apparatus for breaking coal, coke and similar materials.;

ftures not only .comb1nat1on,

and its object, stated briey, is to provide, in a machine or apparatus of that character, certain improved structural features or devices whereby the driving mechanism will be thrown out of operation automatically consequent upon the introduction of unbreakable bodies, sucl" as stone, iron and the like, into the machine with the coal. y

According to the form of the invention now preferred, and vas illustrated in the accompanying drawings, the material to be broken up vis carried across a supporting table which is normally held in raised position, but which is caused to yield and move down when the crushing implements encounter uncrushable material; and this yielding downward movement of the table is utilized to release a normally-locked or latched member which thereupon acts to'interrupt the drive. The invention involves these feain their broad aspect and in ut also in their specicdetails; andit further involves various other combinations and arrangements of parts and features, as hereinafter described and claimed.'

In said drawings, Figures 1 and 2 are, respectively, a side elevation and a left-hand end view of the improved apparatus ormachine, and Fig.` 3 is an enlarged vie-w of a detail of the latch mechanism.

Referring more .particularly to the drawings, the apparatus, which is mounted on a suitable base or bed, comprises a framework that embodies upright end members or standl ards A, A', connected at their lower lport-ions by side members B,B', and at, their upper portions by horizontal cross-ties C, C; the various parts being bolted or otherwise fastened together. The ties or auxiliary side members' C, C', have their inner side faces provided with. guideways for engagement by a pair'of vertically-movable slides or crossheads D, D',which, in turn, carry plates F, F' on their under faces provided with' holes to receive the Shanks of the crushing' or breaking tools G, G', here shown'as in the form of vertically-arranged picks. rlhe're are two distinct sets or groups of these picks, one set G' carried by the cross-head D and hereinafter called the roughing picks, and` the other set G carried by the cross-head D` and ltermed the'nishing picks; those of the last-named set being adjustable laterally with relation to one another to regulate the size of en aged with the fast pulley'T,

192e, sum1 No. 113,034, and in France september 11, im;

the pieces into kwhich the coal or the like is i i to bebroken. a o

To actuate'the two sets of 'picks in alternation Aat the proper` intervals, a shaftv H is provided having cranks connected by rods or y,pitmen E, E' with spindles M, M', mounted upon the` crossheads DD. The crank shaft isy journaled in bearings I, I' secured 5to the topsgof the two suitably-positioned .l

standards A, A'and it carriesat one end fast and loose pulleys T vandU with which a driving belt (not shown) isalternatively engageable, being shiftable from vone 'to the other by a fork Y', as hereinafter explained.

The reciprocatory movement of the picks carries them toward and -from a breakin lor ,crushingtable J, over which passes an en less conveyor N consisting of a series .of metal plates attached at opposite ends to apair of sprocket chains that travel around pairs of s rockets O, Osecured to horizontal cross- `s afts P, P2. The rear shaft P is connected to be driven from an uEpercrosS-shaft yPz,

in the present instance, y meansv of a chain T' and sprockets T2 and 'I3 tively, to the shafts P" and P; the former shaft also beingprovided with a bevel gear S' in mesh with anddriven by a bevel pinionS which is xedto the oppositeend o a crank shaft H from pulleys T,IU. Shafts P. and P' are journaled in brackets Q, and R secured to standard A, while shaft P2 issimila'rly journaled in brackets Q secured to the front standard A'.

secured, respec- ,So far as concerns the'parts already defv scribed, the operation is -believed to be obvious. Assuming that the driving belt is the crank yshaft/ H will be rotated and will act to reciprocate the two sets of picks, one vafter the other, which thusmove toward and from the material to be crushed. At the Sametime, the belt or conveyor` N which carries lthe material beneaththe picks is driven from shaft H through the gearing S, S', and thechain-andsprocket connection T- '-T".

vThe main feature of the'invention, however, is.` the provision of an automatic throwout which is operated whenever one set of picks-in this case, the roughing picks Gi'- encounter unbreakable material on the conveyor; the arrangement-being such that when that contingenc occurs, the drive will be automatically iscontinued or interrupted and the shaft H will cease to rotate. Preferably, this interrupting action is effected by lil@ shifting the driving belt onto thehloose pulley; the shifting fork Y being spring-loaded to move the belt when released from a lockling orlatching device which normally holds it in cocked position. The crushing table J whereover the upper stretch of conveyor N passes, is mounted to yield when the picks strike unbreakable material on the conveyor, and it is this yielding movement which is utilized to release the latch.

According to the construction illustrated, table J is hinged or pivoted at its rear end upon a horizontal' rot or pin L mounted in bearings inthe rear standard A, and is supported adjacent its front end by a pair-,of springs K which normally hold that end raised and which are positioned in recesses in the lower or main side members B, B of the framework. The springs K actually engage the ends of a cross-rod L whereon the table directly rests, and it will be apparent that said springs will necessarily yield when the downward pressure exerted by picks G exceeds their upward pressure.

The. previously-mentioned shifting fork Y includes as a part thereof a horizontal shaft or rod Y carrying anexpansible coil spring Z that tends to move it in a direction to shift the belt from the fast pulley to the loose pulley; said rod being slidably mounted in o enings formed through a pair of spaced c eeks or lugs V, V', which are here shown as carried by one of the upper or auxiliary side members or ties in this case, member C). A cross-pin X is also mounted in lugs V, V', and constitutes a pivot for a lever X which is connected at its outer end by a chain Z, or other flexible element to the adjacent end of cross-rod L; the other end of l the lever being adapted to catch into a notch or shoulder Y2 formed in the fork rod Y and disposed in the space between said lugs when the fork is retracted to engage the driving belt with the fast pulley T.

Due to this arrangement, it will be apparent that the downward movement of the crushing table J described above will exert a downward pull on chain Z, with the result that the catch or lever X will turn clockwise about its pivot X', and itsinner arm will be released from the notch Y2 in rod Y. Spring Z will thcreb be freed and its expansion will move the for( to the right; said fork carrylng the driving belt onto the loose pulley U and 1n consequence, terminating the rotation v of shaft H, whereupon the machine will cease operatmg. After removal of the unbreakable material from the machine, the latter can be re-started by retracting the fork in any desired manner so as to bring lthe driving belt back again to engagement with the fast pulley, the rearward or leftward-movement of the fork compressing its actuating spring Z" and finally bringing the notch Y2 into line with the inner arm of the catch lever X which like, comprising a main shaft; fast and loose pulleys mounted thereon for alternative engagement by a'driving belt; crushing tools l carried by said shaft; va belt shifter; and means for automatically operating the belt shifter to engage the belt with the loose pulley when the crushing tools strike unbreakable material. l

2. A breaking machine, comprising a yieldingly mounted element to support the material being crushed; crushing tools operative on the material on said support and acting to cause yielding movement ofthe same on contact with unbreakable material; means for operating said tools; and means operated automatically consequent vupon such yielding movement for terminating the action of the tool-operating means.

3. A breaking machine, comprisinga yieldingly mounted element tosupport the material being crushed;a crank shaft extending thereover; crushing tools suspended from said shaft for operation en the material on said support .and acting to cause yielding movement of the same on contact with unbreakable material; driving means for said shaft; and means operated automatically consequent upon such yielding movement for ter- 'minating the action of said driving means.

tools .carried by said shaft and acting to cause yielding movement of said support on contact with unbreakable material; fast and loose pulleys mounted on said shaft for alternative engagement by a driving belt; a belt shifter; and means operated automatically consequent upon the yielding'I movement of the support for actuating the belt shifter to engage the belt with the loose pulley.

6. A breaking machine according to claim 2, in'which the support is' hinged at one end for swinging movement, and in which sprin means are provided for normally holding the other end of the support in raised position.

` A breaking machine, according to claim 5, 1n which the support is hinged at one end for swinging movement, and in which spring means are provided for normally holding the other end of the support in raised position.

8. A breaking machine, comprising a main vno shaft; fast and loose pulleys mounted vthereon for alternative engagement by a driving belt;

- a spring-loaded belt shifter tending to engage the belt with the loose pulley; a latch for. holding the belt shifter in cocked position with the belt engaging the fast pulley; crushing tools carried by said shaft; and means for automaticallyreleasing the latch when the crushing tools strike unbreakable material.

9. A breaking machine, comprising a yielding sup ort for the material to be crushed; a main s aft extending thereover; crushing tools carried by said shaft and acting to cause yielding movement of said support on contact with unbreakable material; fast` and loose pulleys mounted on said shaft for alternative engagementby a driving belt; a s ring-loaded belt shifter tending to engage t e belt with the loose pulley; a latch for holding the belt shifter in cocked position with the belt engaging the'fast pulley; and means operated automatically consequent upon the yielding movement of the. support for releasing the latch.

10. A' breaklng machine, comprising a main shaft; fast and loose pulleys mounted thereon for alternative engagement by a driving belt; a belt shifter means tending to lmove the belt shifter in a direction to engage the belt with the loose pulley; melans acting against the last-named means to hold-the belt shifter in a position lin which the belt engages the fast pulley; crushing tools carried by 'said shaft; and means for automatically releasing said holding means when the crushing tools strike unbreakable material. *y

In testimony whereof we ailix oursignal tures. v

LoZAL AMABLE..

LERCIU, AoHnJLE.

Images