US1156277A - Tunneling-machine. - Google Patents

Description

W. E. DEAN.

TUNNELING MACHINE.

APPLICATION FILED SEPT. I2, I9I2.

2 S HEETS-S HE cana W. E. DEAN.

TUNNELIN'G MACHINE.

, 12. 1,156,277. Patented 0ct.12, 1915.

2 SHEETS--SHEET 2.

WILLIAM E. DEAN, OF SUPERIOR, WISCONSIN.

TUNNELINGr-MACI-IINE.

Specification of Letters Patent.

Application filed September 12, 1912. Serial No. 720,077. 71,1 x

To all whom it may concern:

Be it known that I, I/VILLIAM E. DEAN, a citizen of the United States, residing at Superior, in the county of Douglas and State of Wisconsin, have invented certain new and useful Improvements in Tunneling- Machines, of which the following is a speciiication, reference being had therein to' the accompanying drawing.

My invention relates to improvements in tunneling machines.

This invention consists of certain new and useful improvements in tunneling machines and relates particularly to such a machine for tunneling rock or such like substance.

The Objectis to provide a machine of the class named, in which the extent of cut upon the face of the work engaged is at all times predetermined, that is to say, thereciproeating drills do not work at right-'angles to the face of the rock, but being carried at an angle to the radial line of their vertical movement establish a new working plane at each advancement into the face of the work engaged-thus taking a depth of slice predetermined at each upward movement of the drill battery, the battery being advanced y each time when the drills are in their lowermost position until the entire face of the cutting bit engages the face of the surface being cut, then when raised on the are of a circle whose radial line is at a fixed angle to the center line of the drills, maintain the depth of cut first established up the entire face of the work.

Another object of my invention is to provide a tunneling machine of this character which is simple in construction and effective in operation and having certain details of structure hereinafter more fully set forth.

In accompanying drawings, Figure l is a vertical longitudinal section of the end of a tunnel .showing a side elevation of my improved tunnelingmachine; and Fig. 2 is a horizontal longitudinal section.

A strong rigid supporting frame is formed of preferably fabricated metal construction,

comprising the base, l; vertical columnsV 2 2 and top 3, this frame being carried upon two suitably constructed skids or runners, 4f which are designed to be movable longitudinally upon the floor ofthe tunnel.

vWithin the columns 2 and at the four corners of the supporting frame are carried rods or shafts, 5 5 and 6 6, the frame Vends of the same being screw threaded and susceptible of longitudinal movement inde-- pendent of the frame but supported thereby, and for such longitudinal movement I pref fer' to employ internally screw threaded chain driven, sheaves or sprockets, 7 which Patented Oct. 12, 1915.

may be operated in any desired manner for the purpose, or the shafts 5 5 and 6 6 may be reciprocated in any other manner without departing from the spirit of my invention.

The forward ends of the shafts 5 5 are 'pivotally supported by skids 8 and designed to move back and forth upon the floor of the tunnel. The forward ends of the shaft 6 6 are each pivotally supported by a shoe 9 engaging the roof 3 of the supporting frame and which are formed integral with a downwardly extending segmental shaped, toothed rack l0, which r acks are each pivotally mounted upon the shoes 8 as illustrated in Fig. l at ll. Thus the racks 10 l0 are susceptible of fore and aft movement indegaged by twin gears l2, designed tobe operated preferably by worm gears 13 from suitable power such as a motor 14 or in anyA mnner whereby the gears 12, may be slowly and forcibly operated in either direction for raising and lowering the battery of drills controlled thereby. V

15 represents the reciprocating either air, electricity or steam operated, the two outside pairs of which are rigidly Xed to the gear casing 16 of the gears l2 and are carried thereby, the intermediate drills between the two pairs above mentioned are designed to be rigidly iixed to the side pairs by through bolts 17 so that theentire battery of drills are at all times in the same plane and operate vertically in unison.

The drills l5 are fixed to the gear casing 16 at an angle differing from that of the .radial line of the rackslO-IO and gears 12,

so that the face of the cutting bits are not in a plane parallel with the arc of the rack,

drills are designed to operate against .the face of v the tunnel, from the bottom upward, thus when a cut is to be made, the drills are placed in the position shown in the drawings and gradually advanced while at work until, the entire face of the Abits are engaged,

when the forward motion is stopped and the battery gradually raised up the face of the tunnel, the depth of cut being iixed by the angle of the face of the bits. Thus it is evident the entire face of the bit will impinge the surface being cut as the battery is raised, whereas, if the drills vwere carried in line with the radius of the racks as is common, only the upper edge of the bits would be engaged in work by which,arrangement great strain upon the drills `and entire mechanism is avoided and much better and easier work accomplished.

I prefer to have the cutting bits of the drill sufficiently large to covery collectively the entire surface' laterally of the Jrace to be worked and to' Operate the reciprocation of the drills consecutively.

Having thus described my invention what I claim is: j

- 1. A tunneling machine, comprisinga vertically disposed support, horizontally adjustable arms carried by the support, shoes carried by the outer ends of the support, segmental rack bars pivotally connecting the shoes, a drill support surrounding the rack bars, a battery of drills carried by the support, pinions carried by the drill support and meshing with the rack bars, and means for rotating said pinion whereby the battery of drills may be moved in an arc of a circle.

2. drilling machine comprising a vertically disposed support, horizontally arranged adjustable arms carried by the upperand lower ends or said support, shoes pivotally carried by the outer ends of the said arms, segmental racks connecting the upper and lower shoes, a drill support surrounding the rack bars, a battery of drills carried by the support, pinions carried by the drill support meshing with the rack bars, mea-ns'` for rotating said pinions whereby the battery of drills may be moved in an arc or a' cir-cie.l

3.l A drilling machine, comprising a verticallyl disposed frame', horizontally arranged rods extending through the said frame at its upper and lower ends, and screw threaded sprockets on said rods within the `frame', means' for operating said sprockets whereby the rods are longitudinally adjusta'lble, shoes carried by the outer ends oi' the rods,- segni-ental rack bars connecting the upper and lower shoes, a drill support surrbunding the rack bars, a battery of drills carried by the support, pinions carried by the support and meshing with the rack bars, and a worm driving said pinions whereby the battery of drills may be moved vertically in an arc of a circle.`

l; drilling machine, comprising a vert'ically disposed Jframe, horizontally arranged rods extending through the frame at its upper and lower ends and threaded, sprocketsV on said threaded rods within the frame, means for moving the said sprockets in unison, shoes pivoted and carried by the outer ends of the rods, rack bars rigidly carried by the upper shoe and having its lower end pivotally connected to the lower shoe, a drill support surrounding the rack bars, a battery of drills carried by the support, pinions carried by the support and meshing with the rack bars, and a worm driving said pinions, whereby the battery of drills may be moved vertically in an arc oiI a circle.

5. A drilling machine comprising a vertically disposed frame, horizontally alrranged rods extending through the frame at its upper and lower ends and threaded, sprockets on said threaded rods within the frame, means for moving the said sprockets in unison, shoes Icarried by the outer ends of the rods, rack bars rigidly carried by the upper shoe and having its lower end pivotally connected to the lower shoe, a drill support surrounding the rack bars, a battery of drills carried by the support, pinions carried by the support and meshing with the rack bars, a worm for driving said pinions, and nreans for driving said worin substantially as shown and described.

6. A drilling machine comprising a frame, a skid for' supporting said frame, horizontally arranged rods carried by the upper and lower ends or the frame, screw threaded sprockets on said rods within the Jframe, means for operating said sprockets in unison whereby the rods are simultaneously adjusted in either direction, a plate carried by the upper end of said frame, shoes carried by the outer ends of the upper rods and resting against the plate, shoes pivotally carried by the lower rods, segmental rack bars rigidly carried by the upper shoes, and pivo'tally connected to the lower shoes, a drill support surrounding the segmental rack bars, a battery of drills carried by the support, pinions carried by the support and meshing with' the' segmental rack bars, a worm operating said pinions and means operating th'e said rack, substantially as shown and described.

7. A tunneling machine, comprising a vertically disposed support, horizontally adjustable arms carried by the support, segmental rack bars ca'rried by the arms, a drill siup'ort surrounding the rack bars, a battery of drills carried by thev support at an angle to the radial line' of the support, pinions carried by the drill support and meshing with the rack bars, and means for rotating said pinions. v

l 8'. A drilling machine, comprising a vertically disposed support, horizontally arranged adjustabler arms carried by the upper and lo'wer ends of said support, shoes p'ivotally carried by the outer ends of said arms, segmental racks connecting the upper and lower' shoes,a drill support surroundroo ing the racks, a battery of drills carried by In testimony whereof I hereunto aix my the support at an angle to the radial line signature in the presence of tWo Witnesses.

of the support, pinions carried by the drills and meshing With the rack bars, and means WILLIAM E DEAN" for rotating said pinions whereby the bat- Witnesses:

tery of drills may be moved in an are of a NORMAN E. LAMOND,

circle, substantially as shown and described. S. GEO. STEVENS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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