US1180014A - Rock-cutting machine. - Google Patents

Description

l nocK CUTTING MACHINE.

APPLICATION FILED 1UNE25. IBIS.

Patented Apr. 18, 1916.

2 SHEETS-SHEET I.'

lam-Mull Z- I z vo -E' J. W. COOK.

ROCK cuTnNG mAcHmE.A

APPLICATION FIL-EU1UNE25| 1915.

11,180,014.` Patented Apu 18, 1916.

2 SHEETS-SHET 2.

` gnou/Hop yat JOHN WILLIAM COOK, OF

MIAMI, FLORIDA, ASSIGNORA OF ON-THIRD T0 GEORGE WAIDECK, OF MIAMI, FLORIDA.

ROCK-CUTTING MACHINE.

Specification of Letters Patent.

Patenten apr. is, asie.

Application led .Tune 25, 1915.v Serial No. 36,285.

To all whom t may concern.-

Be it known that I, JOHN -WILLIAM Coon, a `citizen of the United States, residing at Miami, in the county of Dade and State of Florida, have invented certain new and usetul Improvements in Rock-Cutting Machines; and I do hereby declare the following to be a fullj clearLand exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new'and useful improvements in rock cutting machines and is more particularly an improvement over my former Patent No. 1,083,6GG;, issued January 6, 1914, and my object is to provide a cutting device comprising a rotary cutter head and a pluralityof cutting tools having a combined reciprocatory and rotary movement.

A further object is to provide means for readily assembling the parts of the cutting device together'.

A further object is to so construct the eutter head and tool holder that rocks or similar hard substances may readilypass through the cutting device. And afurther object is to provide yielding operatingmeans for the tool holder.

Other objects and advantages will be hereinafter set forth and more particularly pointed out in the accompanying specifica tion.

ln the accompanying drawings which are made a part of this applicationj Figure 1 is aside elevation of the supporting frame and cutting device attached thereto. Fig. 2 is a front elevation of the supporting frame and cutting device. Fig. 3 is an enlarged detail perspective view of one of the pitmen emplo ed for reciprocating the tool holder, showing the cushioning mechanism therefor. Fig. il adetail elevation of the tool holder. Fig. 5 is an enlarged sectional view through the tool holder and cutterhead. Fig. 6 is a top plan view of the cute ting device. showing the pitmen and rotating shaft in section. Fig. 7 is a bottom plan view of the cutter head. Fig. 8 is a side elevation thereof. Fig.y 9 is a sectional view ot thecutter head as seen on line 9. 9, Fig. S. Fig. 10 is a side elevation of a ring member employed for locking the parts ofthe cutting device together, and Fig.' 11 is a bottom plan view thereof. i

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views,'1 indicates a supporting frame which may be constructed in any preferred manner, to one end of which is attached a disk 2. said disk having ears thereon. with which the arms of the frame are secured.

Depending from the peripheral edge ot' the disk Q isa flange el. said flange having in .its peripheral face a circumferential recess 5, with which engages an inwardly extending rib 6, of a collar T. said collar being preferably formed ot two semicircular meinbers which are secured together by introducing bolts 8 through hollow bosses 9 at the meeting edges of the two sections. The

lower edge of each collar section is provided with a T-slot 10 with which engages T-heads 11 on the upper edge of a cutter head 12, the edges'13 of the stems of the T-heads being beveled to receive'the vbeveled faces 1st of the T-slots 10. said beveled portions being so arranged that the collar sections can be quickly` attached thereto or removed therefrom.

The cutter head 12' comprises a circular shell portion 15, portions of which are cut away to provide passages 16, through which rocks or large particlesvmay pass Without interfering withthe operation of the cutting device.

Attached to the lower edge of the shell 5 and preferably integral therewith'is'a plurality of arms 17 which arms are inclined downwardly and extended inwardly to the axial center of the cutter head7 said arms at their Ypoint of junction having an opening 1S therethrough which is preferably square to receive the squared end 19 of a rotating shaft Q()q said shaft being provided with an integraler lixed collar 21 which rests upon the inner 'tace of the joining arms so that by extending bolts 22 through the collar and joined Vvportions of the arms.y the cutter head will be securely held in engagement wi. h theshait.

The arms l? form a substantially `.conical spider,'the inner faces of the arms having stepped portions 23, through which are formed sockets 2 4 and through these sockets are adapted to reciprocate cutting tools or chisels 25,-Jfand while I have sho-wn the sockets 24 of square 4formation in cross section, it will be readily understood that they can be of any shape to conform to the shape of the cuttingl bars.

' Slidably mountedupon the shaft 2O within the cutter head 12 is a tool holder 26 which is likewise composed of arms 27 designed to register with the arms 17 of the cutter head. The lower edges of said arms have. stepped portions 28 inversely arranged with respect to the stepped portions 23 of the arms y17, rsaid stepped portions having slots 29 in their lower faces in ywhich are secured the inner ends of the cutting tools 25, pins 30 being Vextended transversely through the walls of the slots and the interlposed portions of said tools. By arranging the cutting tools in this manner, the tools nearest to the center of the cutter head will f travel ahead of the next succeeding set of tools and the second set of tools ahead of the next succeeding set, so that the tools `will have a shearing effect when in operation.

By arranging the arms 17 and 27 in substantially spider formation and by providing the openingl in the shell of the cutter head, any large particles, such as stone, or

the like, will readily pass between the arms,' -andto better insure theifree passage of such obstructions, the upper edges 30 of the arms 27 are tapered while the disk 2 is provided with an enlarged opening 3l for the passage of such partlclesf as may enter through the passage in the cutter head.

lThe tool head 26 .has a central vertical orifice 32, through which the rotating shaft 20 passes and in order to reciprocate the tool holder on said shaft, the head'33 i's ex-A tended upwardly from the central portion of the tool holder which head is provided of the slot determining the. longitudinal with a peripheral groove 34 to receive a collar 35, said collar having wrist pins 36 thereon to which are pivotally secured one section of the pitmen 37, said pitmen in turn extending through the disk 2 on opposite sides ofthe rotating shaft 20.

'The outer ends of the pitmen sections 37 are entered in sleeves 38 and are' slidably mounted therein, the movement of said pitmen sections being limited by extending'a headed stud 39 transversely through the end of the pitmen sectionsentering the sleeve and through slots 40 in the sleeve, the length movement of the'pitm'en sections.

Inorder to form a cushion for the pitmen sections, a coiled spring 41 is introduced into each sleeve .between the closed end of thel sleeve and the end yof the pitman section,

the tension of the spring being controlled,

by means of an adjustingfserew/LQ which is Extending beyond the closed end of eachy sleeve are a pair of ears 44, between which are pivotally secured a'pitman section 45,

ythe upper end of the pitman section 45 being secured to a crank shaft 46, so that when said crank shaft is rotated the pitmen sections will operate to `reciprocate the tool head and tools carried thereby, moving them inwardly and outwardly through the sockets in the arms of the cutter head.

The crank shaft 46 is operatedA on a driving shaft 47 mounted in suitable bearings on the supporting frame l, said driving shaft having a beveled gear 48v which meshes with a beveled gear 49 ona stub shaft 50, said stub shaft extending at right angles to the driving shaft and having a gear 51 at the cuter end thereof which gear in turn meshes with a pinion '52 attached to the lcrank shaft 46, and it will be readily seen -that when the drivingshaft 47 is rotated, the crank shaft 46 will be likewise rotated through the medium of the beforementioned gears. The rotating shaft 20 is operated by attaching the gear 53 thereto with which meshes a pinion 54 on the inner end of the driving shaft 47 and when said shaft 20 is rotated, the cutter head 12, ring member 7 and tool holder 26 will be likewise rotated,'while the disk2 and 'parts carrying the same remain A I In operation, the cutter head is positioned f against a surface and power applied to the driving shaft 47, which will result in operating the crank shaft 46 and reciprocating the tool holder and tools on the rotating shaft, forcing the sharpened ends of the tools into engagement with ,the surface upon which the tools areto operate. As the tools Amove inwardly and outwardly the'cutter head and parts 'carried thereby are slowly rotated, thereby constantly bringing the edges of the cutting tools into engagement with the new surface, and in view of the manner in which the cutting tools are positioned they form a shearing action upon the parts with which they engage.

Should a stone or extreme hard substance be encountered, the force of the blow is cushioned from the crank shaft by the ends of the pitman sections 37 striking the springs 41, thus eliminating the jar from the pitmen and parts operating the same. As the particles are loosened by the cutting tools, they enter through the passages in the shell mettete pered similar tothe edges of the arms 27 so as to give a freer passage for the particles Within the cutter head casing. Y p

li 1t 1s desired to remove the tool holder or to replace any of the cuttingtools, it is loutv lirv to remove the bolts'S from the lie bosses when the two sections of the collar member may be separated. and disengaged from the T-heads of the cutter head to permit the out iter head to descend from around the tool holder and tools carried-thereby. Y

lt will be fully understood that although l have shown and described a preferred means ot' operating the toolholder, any suitable means may be employed for operating the same.' y

l Having thus fully described'my invention what I claim as new and desire to secure by YLetters Patent is`:-

l. A. cutting device, comprising a disln,

i cess, a cutter head having sockets therein, a

reciprocating tool holder in the'lcutter head, tools carried by the tool holder and adapted `to be moved longitudinally through said sockets, a two part collar having a rib adapt ed to engage the recess 1n the flange, means to secure the parts of the collar together, and.

interlocking means on the cutter head and Sl'and the bolts 22 from the collar 21,

collar member to hold the cutter head in fixed engagement With the collar member.

v2. A'cutting device, comprising a. hollow cutter head, inclined integral arms at one end of the head, said arms having stepped portionsthrough Which extend sockets, said cutter head. having passages lbetween the arms, a-tool holder comprising arms having stepped portions *'coperating with the stepped portions of the cutter head, said stepped portions having slots, cutting tools secured in said slots and extending through the sockets of the cutter head, and means to reciprocate the tool holder and tools carried thereby.

3 A cutting device, the combination with a disk'having a discharge yopening therethrough, a depending flange at the edge'oltl said dis ksaid iange having a peripheral recess, acutter head having T-heads projecting therefrom, parts of the Tfheadbeing tapered, a tivo-part collar having ,lslots, parts of the Walls thereof being tapered'to coperate with the taper of the ifheads, an internal ribV on the collarf section adapted to engage -the'recess in the flange, andmeans to Asecure the collar sections 'together and around said liange.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. y

, JOHN LLIAM COOK.

Witnesses:

GEO. G. VVALDECK, MARY A. NALL,

@spies et this patent may be obtained for five nente each, by addressing the "ommsaiener et Entente,

' Washington, D. C."

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