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Publication numberUS2556357 A
Publication typeGrant
Publication dateJun 12, 1951
Filing dateOct 29, 1948
Priority dateOct 29, 1948
Publication numberUS 2556357 A, US 2556357A, US-A-2556357, US2556357 A, US2556357A
InventorsBaldwin John C
Original AssigneeBaldwin John C
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined mine drill, timber jack, and mine post
US 2556357 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June .12, 1951 J, c. BALDWIN COMBINED MINE DRILL, TIMBER JACK, AND MINE POST 4 Sheets-Sheet 1 Filed Oct. 29. 1948 FIG. 2.

FIG. 1.

7 m W4 o N m June 12,1951 J. c. BALDWIN COMBINED MINE DRILL, TIMBER JACK, AND MINE POST Filed Oct. 29, 1948 4 Sheets-Sheet 2 .ilL

f I N V EN TOR. I JM/V 0. 84 DIV/1V,

FIG. 12. 76. .13. F76. 14.


J. C. BALDWIN June 12,1951

COMBINED Mm: DRILL, TIMBER JACK, AND MINE POST: Filed Oct. 29. 1948 4 Sheets-Sheet. 5

FIG. 15.

INVENTOR. JOHN a. aaww/lv,

BY v '%.%mflmwvz flm/zdam ATTOE/VEYS.

J. c. B ALDWlN June 12, 1951 2,556,357 COMBINED MINE DRILL, TIMBER JACK, ANT) MINE POST Filed Oct. 29, 1948 4 Shee ts-Sheet 4 I INVENTOR- JOHN c. an; army Arr-Nays.

- or a mine post.

Patented June 12, 1951 COMBINED MINE DRILL, TIMBER JACK, A D MINE POST John 0. Baldwin, Bluefield, Va.

Application October 29, 1948, Serial No. 57,258

My invention relates to coal mining apparatus, and more particularly to a combined tool for drilling slate or rock, and which tool is susceptible also of being used as a timber jack and as a safety post. In coal mining it is customary to provide a drill standard comprising a pair of extensible members including upper and lower ends engageable respectively with the roof and floor of a mine tunnel or drift. Such standards usually include means for connecting a drill thereto whereby the standard provides a firm base for the drill.

With the foregoing in view, it is an object of my invention to providev an improved mine drill.

A further object is to provide an improved standard for a mine drill.

A further object is to provide an improved means for operatively connecting a mine drill to a standard.

A further object is to provide an improved mine drill comprising a pair of extensible members, one of said members including an upper end formed to provide a jack head, said head being formed to provide means providing a. drill chuck and means for selectively utilizing said drill either as a drill, a timber jack, oras a mine post.

A further object is to provide an improved standard for a mine drill, and means for readily converting said standard to provide a timber jack A further object is to provide an improved mine drill including a base, a nut carried by said base for rotation relative thereto, a jack screw threaded in said nut, said screw including an upper end providing a drill chuck, means for preventing translational movement of said nut on said screw, means for selectively rotating either said nut or said screw relative to each other, and means for releasably locking said nut to said base.

Other objects and advantages reside in the particular structure of the invention, combination and arrangement of the several parts, all of which will be readily understood by those skilled in the art upon reference to the attached drawings in connection with the following specification, wherein the invention is shown, described and claimed.

In the drawings:

Figure 1 is an elevational view of the improved mine drill showing the same in use as a drill;

Figure 2 is a like view of the mine drill according to the invention showing the same being used as a timber jack or mine post;

showing a modification;

1 Claim. (Cl. 255-53) Figure 4 is an enlarged elevational view showing a detail of the drill;

Figure 5 is an enlarged fragmentary eleva-v tional view showing an attachment for the drill, parts being broken away and shown in longitudinal section;

7 Figure 6 is a fragmentary elevational View on a slightly enlarged scale showing the attachment of Figure 3;

Figure '7 is a bottom plan view of the attachment of Figure 6;

Figure 8 is a fragmentary longitudinal sectional view of the lower end of the drill showing a further attachment therefor;

Figure 9 is a longitudinal sectional view through the upper end of'the'drill showing a combined screw jack and drill chuck;

Figure 10 is a fragmentary elevational view of the structure of Figure 9;

Figure 11 is a plan view of the structure of Figure 10 looking from the right thereof;

Figure 12 is an elevational view of a further attachment for the drill;

Figure 13 is a front view thereof looking from the left of Figure 12;

Figure 14 is a rear view of the attachment of Figure 12 looking from the right thereof;

Figure 15 is an elevational view of a drill standard according to the invention showing the drill attached thereto;

Figure 16 is an enlarged horizontal sectional view taken substantially on the plane of the line |6|6 of Figure 1;

Figure 1'7 is an enlarged longitudinal sectional view showing the structure of Figure 16;

Figure 18 is an elevational view of a drill standard for use with the drill according to the invention:

Figure 19 is a fragmentary longitudinal section view taken substantially on the plane of the line I9-l9 of Figure 18;

Figure 20 is a fragmentary horizontal sectional view taken substantially on the line-2!l-20 of Figure 15.

Referring specifically to the drawings, wherein like reference characters have been used throughout the several views to designate like parts, and referring at first to the drill according to the invention, 2! designates any suitable base for the drill which in the form illustrated comprises a tubular sleeve of rigid metallic construction and whichis preferably provided with any suitable handleZZ intermediate the ends of the sleeve to facilitate the transportation thereof. As best seen in Figure 17, the sleeve 22 has a cup-shaped collar 23 secured to the upper end thereof to p vide a unterbore 24- Any s table th u bearing 25 is seated in the counterbore Z4 and in the form illustrated comprises an anti-friction thrust bearing. However, it should be understood that other forms of thrust bearings may be substituted if desired. A circular nut 26 including a base portion which is freely rotatable in the counterbore 24 atop the bearing 25. A cap member or washer 21 overlies marginal portions of the base portion of the nut 26 to maintain the same in the counterbore against axial movement relative to the sleeve 2|. The washer 2'. is secured in position atop the collar 23 in any suitable manner, as by the machine screws shown. The nut 26 includes an upstanding sleeve 28 internally threaded and of a diameter less than the base portion of such nut. Such sleeve 28 is provided with a longitudinally-extending keyway 23 seating a key 30 therein. The hub 3| of a handle 32 is formed with a bore 33 complementary to the periphery of the hub 28 and is slidable thereon. The bore 33 is provided with a keyway 34 which is preferably open at the bottom so as to be slidable over the key 36 when the same is seated in the keyway 29 of the hub. Thus, upon rotation of the handle 32, the nut 26 is rotated therewith. The nut may be provided with a plurality of lubricating openings, such as the radially-disposed opening 35 and the diagonally-disposed opening 36. Thus, lubrication is readily supplied to the bearing 25 through the lubricating channel 36, while the interiorlythreaded bore of the nut is lubricated through the channel 35. A jack screw 31 is threaded through the nut 26 in telescopic relation to the sleeve 2|. At times, it'is desirable to lock the nut 26 against rotation relative to the sleeve 2| and this may be accomplished in two ways. Thus, a securing element or chain or the like 38 is fixed to the collar 23 and has a tapered pin 39 fixed on the free end of the chain. The handle 32 may be provided with a pair of vertically-spaced ears 46 which are apertured to receive the pin 39 therein. This arrangement permits limited rotation of the nut and handle in one direction relative to the sleeve 2|, but the nut and sleeve are thereafter locked together upon continued rotation. Reversed rotation of the handle and nut relative to the sleeve is permitted to a limited extent and thereafter prevented. Alternatively, the washer 2'! and base portion of the nut 26 may be provided with aligned and complementary tapered apertures 4| and 42 adapted to receive a removable pin means or pin 39 therein whereby to lock the sleeve 2| and nut 26 together against any rotation in either direction. The purpose of this arrangement will be apparent later.

As best seen in Figure 4, the upper end of the jack screw 31 has fixed thereon a circumferential flange 43 slightly inwardly of the free upper end of the screw. The flange 43 is formed with a keyway 44 therein for the reception of a key, not shown, substantially identical to the key 30 of the hub 28 of the nut. Likewise, it should be noted that the periphery of the flange 43 is similar to that of the hub 28 of the nut, whereby the wrench or handle 32 is selectively engageable either with the hub 28 of the nut or the flange 43, whereby to provide means for selectively rotating either the nut 26 relative to the screw 3'1, or the screw 3'! relative to the nut 26. In the latter instance, of course, the nut and sleeve 2| are locked together by the pin 39 in either of the two manners indicated aforesaid. However, at times, it may be desirable to rotate both the nut 26 and the screw 3'! simultaneously in opposite directions to provide rapid translational movement of the screw 31 relative 4 to the sleeve 2 With this in view, it is desirable to have an additional handle |32 of the same structure as handle 32 for application to the flange 43. Likewise, in view of the fact that the drill is frequently disposed adjacent the face of a wall or walls, wherein it would be impossible to rotate a handle such as handle 32, I prefer that the handle |32 be formed with any suitable and/or well known ratchet mechanism which is reversible in the well known manner whereby to permit the ratchet engagement with the key 30 in a well known manner. Thus, the drill is readily adaptable for work in close quarters. Of course, the handle I32 of the type including ratchet mechanism may be substituted for either the handle I32 of the structure of handle 32 or handle 32 if desired, where the situation will not permit the latter type handles to be rotated. The other or free end of the jack screw 3'! has a surface engaging element secured thereto, such element being either a flanged foot 49, Figures 1 and 2, or a drill 52, Figure l. Specifically, the free end of the jack screw 31 axially outwardly of the flange 43 is formed with any suitable threads 45 for threaded engagement with the interiorly-threaded socket 4i of a head 46. As best seen in Figures 9 to 11, inclusive, any suitable means, such as the set screws 48, may be passed through the socket 41 for engagement with the threads 45 and lock the head 46 against rotation relative to the jack screw 31. The free end of the head 46 is formed with an annular flange 49 providing a jack head. An axial portion of a jack head 43 is formed with any suitable chuck socket 50 for receiving the shank 5|, Figure 1, of any suitable drililng tool 52. Aligned transverse bores 53 are formed laterally through the head 46 and intersect the chuck socket 53. Any suitable means, such as the pin 54, is insertible through the bores 53 and through a similar aperture formed in the shank 5| of the drill 52, whereby to lock the drill in the socket 50 against rotation relative thereto. The pin 54 is preferably secured against loss by a chain 55 attached to the head 46.

As is readily apparent from. Figures 1 and 2, when the device is used as a drill, a tool 5| is inserted in the chuck socket 53 of the head 46. Thereafter, by rotating the handle 32 relative to the jack screw 32, the latter may be projected upwardly until the point of the tool 52 engages a wall 56 of the mine. This movement may be expedited by simultaneously rotating the handles 32 and I32 in opposite directions. When the point of the tool 52 is in operative engagement with the wall 56, the handle 32, together with the nut 26, may be locked to the sleeve 2| in either of the two ways previously described. Thereafter, rotation of the handle |32 will rotate the jack screw 31 relative to the nut 26 and will likewise rotate the drilling tool 52 so as to drill a hole in the wall 56. At the same time, the flange 49 being relatively broad permits the device to be used as a timber jack or as a mine post. Thus, in Figure 2, the tool 52 has been removed and the jack head has been projected against the wall 56 by one or both of the handles 32 or |32'. To add to the number of uses of the device, the lower end of the sleeve 2| may be provided with any of a plurality of feet now to be described. Theother or lower end of the sleeve 2| has a surface supporting element secured thereto, such element being either a flanged foot 51, Figures .1 and 2, a pointed foot 62, Figure 6, a pointed $00 66, Figures 12, 13' and 14, or an'eye 80,

bolt 68.

thereto. Figure the lower-end of the member 14 is'proparts.

Figure 20. When the device being iused zas in Figu'resl and2, it may be desired :to provide a radially outwardly-flanged foot:5'|-including a stud I 58 which .is insertibl'e .in the open lower end of thexsleevez'i. Thelower end of the sleeve 2| is provided with laterally-aligned, transverse bores for :the reception :of a lockingxpin '60 which likewise :extends through the stud .58 whereby to lock :the stud in position. It is preferred that the pin .65 be secured 'to the sleeve 2| :permanently, as by ithechain'fi'l. When the device is to be used for other purposes, :the :fianged foot 51 may be readily removed and an additional foot substituted according :to the :purpose .for which-the tool is to be used. Thus,;in Figure fi, the:device is being usedias an anchor for a. rope :pull cutting machine, not shown. As best seen in Figures 6 and '7, there .has .been provided ;a pointed foot62 formed with a stud 53 insertible :in the'open end of the sleeve 2|. As before, the stud 63 is lockedin position by the pin'fifl. As shown in Figure 6, the .pointed foot 162 .is insertible through the eye 64 of the .ropepull 65 and is thereafter embedded .in the floor 61 of the. mine. Meanwhile, of course, .the head 46 of the jackiscrew 31 has been jacked into firm engagement with the roof .or opposite wall 15.6 :of the mine. anchor for the cutting machine.

Thus, the device providesla firm In some instancesthis type of cuttingimachine is actuated by a chain pull for .which purpose I have provided the foot disclosed in Figures 12,

Band 14.

As there shown, the foot .66 is provided with a stud 61 insertible in the sleeve 2| and secured therein either by the pin 60, or, asshown, by a The 'foot proper comprises 'a pair of laterally-spaced, depending arms 69 providing a slot 10 therebetween. One surface of thearms 69 is concaved rearwardly, as at 1|, .to provide a seat for a link 120i the chain. In use, the free ends of thearms 59 are pointed, as at 13, whereby to dig into the floor of the mine in the manner shownin Figure 6. Thus, a firmanchor 'fora 'chain pull cutting machine is provided by this sleeve 2|, but could obviously comprise an elongated stud slidable inwardly'of the sleeve.

The member 14 is provided with a longitudinal series of'spaced transverse apertures 15 therethrough to receive the bolt -68, as shown, or the pin 6|),

whereby the member 14 is readily connected to the sleeve 2| in longitudinally-adjusted relation Likewise, it should be noted thatin videdwith a pair-of downwardly-directed points 16 on'its lowerend. The points 16 are laterally spaced and are fixed to the lower end of the member 14. Suchpointsareadapted to dig into the floor or wall 61 ofthe mineto lock the sleeve 2| against rotation relative to the associated This situationmay be desirable at times when the deviceisused-as a drill, as in Figure 1, whereby .to drillcertain types of material.

In Figure 8, there is disclosed a more flexible type of extension which comprises an extension member 11 which again may comprise .a sleeve slidable onxthe lower end of .thesleeve 2|. The member, 11 is'provided with a plurality of longitudinally-spaced, transverse apertures 18 which function to provide 'means for adjustably connectingthe member 11 to the sleeve 2| by means of the pin, such as the pin 60, or as shown, the bolt .68. In this form of the invention, the lower end of the member TI is of reduced configuration, as at 19, so as to provide an interior bore susstantially identical to the interior bore of the sleeve 2|, whereby to permit the application to theextensi'on member of any of the feet 51, 62 or fit, aforesaid. Of course, the reduced end 19 is transversely bored to receive the pin or bolt 68, whereby to lock the stud of the foot to the extension member.

At times, it is desired to hook the drill to a drill standard to be described later, and with this in View, means now to be described may be provided and which are best seen in Figures 15 and 20. Thus, in Figure 20, a foot has been provided which comprises an eye 80. The eye is provided with a stud insertible in the open lower end of the sleeve 2| and secured therein, as by the pin 60. The free end of the eye 80 comprises a pair of laterally-spaced plates 82 connected together by a cross-piece 83 inwardly of the free ends of the plates. Likewise, and as best seen in Figures 1, and 15, an intermediate portion of the sleeve 2| is provided with any suitable pivot, such as the ear 84, to which is pivoted by any suitable pivot 85 the upper end of a strut 86. The strut 8B is substantially longer than the distance from the pivot 85 to the lower end of the sleeve 2|. Likewise, the free end of the strut 86 is provided with an eye 81 comprising a pair of laterallyspaced plates 88 spanned by a cross-piece 89 inwardly of the free ends of the plates. Thus, the eye 81 is substantially the same as the eye 80 for the sleeve 2 As best shown in Figures 15 and 20, the eyes'80 and 81 are adapted to rigidly support the drill on a standard 90 now to be described and best seen in Figures 15, 18, 19 and 20.

The standard 91! may comprise a sleeve 9| which is preferably provided with a carrying handle92intermediate its length. As clearly shown in Figure 19, the lower end of the sleeve 9| is adapted to detachably receive the stud 93 of any suitable foot 94. The stud 93 may be secured in the sleeve 95 by a cross-pin 95, as previously described. If desired, other forms of feet may be provided, such as the pointed foot 96 shown in Figure 15, which corresponds to the foot I6 shown in Figure 5. Likewise, all of the various forms of feet usable with the drill are adapted to be used with the standard when and if desired. The same is true of the extension shown in Figures 5 and 8. The upper end of the sleeve 9| is provided with an enlarged collar i 23 corresponding to the collar 23 of the drill and which is enclosed by a washer |21 whereby a nut I26 'is rotatably mounted in the counterbore provided by the collar i23. Inasmuch as this structure is similar to the collar 23, nut 26 and the associated structure of the first-described form of the invention, additional descriptionthereof is unnecessary at this time. In any-event, a jack screw 91- is threaded in the nut I26 and is projectible and retractible upon rotation of the nut I26 in opposite directions by means of the handle 232. As best seen in Figure 15, the upper endof the jack screw 91 is preferably formed with a fishtail point 98 for engagement with the roof 56'of the mine. Thus,

with the arrangement shown in Figure 15, when the screw 91 has been projected to a maximum degree, the fishtail point 98 will dig into the roof 56 of the mine and the points 96 will dig into the floor 6? of the mine, whereby the standard 9 is firmly anchored in a vertical position relative to the drift or mine passage. As shown in Figure 18, at times it is desirable to convert the standard 90 into a timber jack or mine post. At this time, the foot 94 is substituted for the pointed foot 96 and means new to be described are applied to the fishtail head 98.

Thus, the head 98 includes an annular flange 99 inwardly of the free end thereof and providing a seat for a housing I which is hollow and fits over the fishtail point 93 to seat atop the flange 99. The housing 109 is provided with an outwardly fianged top E9! adapted to flatly engage the roof 56. The housing 509 may be rotatable relative to the point 98 or may be locked for rigid engagement with the jack screw 97 by means of a pin E92 insertible through the housing E60 and a hole I 03 formed in the head. Thus, the standard 00, as is the case of the drill, is versatile in use. However, when used as a standard for supporting the drill, means now to be described are utilized, but may be omitted if desired.

Thus, and as seen in Figures and 18 and 20, the sleeve 9| is provided with a longitudinal series of spaced hooks 104 which project radially of the sleeve 9|, and are provided with fiat parallel sides I5. Each hook is provided with a recess 06 access to which is provided by a slot I07 opening upwardly. The bill 108 of the hook is substantially rearwardly directed so as to overlie forward portions of the recess I66. As best seen in Figure 15, the cross-pieces 83 and 89 of the eyes 90 and 67 are inserted in separate hooks The side plates 82 and 86 slidably engage the parallel sides 105 of the hooks, whereby to prevent lateral movement or twistingof the sleeve 2! or-strut 86 relative to the standard 96. At the time, and as clearly shown in Figure 15, by positioning the strut eye 07 in various ones of the hooks I04, the sleeve 21 may be disposed in a plurality of selected angular relations relative to the standard 99. Thus, a rigid setting of the drill relative to the standard 96 may be readily achieved. Likewise, the structure described substantially eliminates lateral or twisting play of the parts.

The modification of Figure 3 is essentially the same as Figure 1, except that the base 221 is of square cross-section with rounded corners. The foot attachments will correspond to those previously described except that they will be provided with square studs for fitting the square bore of the base 22!. For example, the foot 257 may be square, as shown, or circular, but the stud 250 is square in cross-section. Likewise, the cup 223 will be square and secured to the base 22: in any suitable and well known manner. The washer 227 may likewise be square, but is, of course, formed with a circular axial hole for hub 3| of nut 26. Likewise, the cup 223 is formed with a cylindrical counterbore for the nut 26. However, except as just described, this form of the invention is the same and is capable of the same uses as the first-described form of drill. Thus, if the device is to be used as in Figure 15, an ear corresponding to the ear 84 may be added for the attachment of strut 86.

As is'obvious from the foregoing, both the drill and the standardare very flexible in use and each is susceptible of a multitude of various uses in a mine. provide a drill and standard therefor. Moreover, while I have shown and described what are now thought to be the preferred embodiments of my invention, it is to be understood that the same is susceptible of other forms and expressions. Consequently, I do not limit myself to the precise structures shown and described hereinabove except as hereinafter claimed.

I claim:

A mine tool comprising a tubular sleeve, a cupshaped collar projecting from one end of said sleeve and fixedly secured to the latter, an antifriction thrust bearing positioned within and resting loosely in said collar, a threaded nut positioned within said collar and rotatably supported in the latter and resting on said bearing, said nut comprising a base portion and an upstanding sleeve internally threaded of a diameter less than the base portion, a cap member secured to said collar and extending over the base portion of said nut to maintain the base portion of the nut within the collar, said base portion of the nut and cap member being each provided with alignable apertures, removable pin means insertable in said apertures for preventing relative rotation between said nut and cup-shaped collar, a jackscrew arranged in end to end relation with respect to the tubular sleeve and having one end extending through the upstanding sleeve. of said nut and in threaded engagement with the latter, a handlearranged exteriorly of said collar and fixedly secured to said nut for rotating the nut relative to the jackscrew, a flange arranged on said jackscrew adjacent to and spaced from the other end thereof and fixedly secured to said jackscrew, a second handle fixedly secured to said flange for rotating said jackscrew relative to said nut, a surface supporting element positioned adjacent the other end of said sleeve and secured to said sleeve, and a surface engaging element embodying a drill positioned adjacent the other end of said jackscrew and secured thereto.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 685,011 Tell Oct. 22, 1901 689,766 Walker Dec. 24, 1901 861,373 Lewis July 30, 1907 965,024 Secrist July 19, 1910 977,734 Hansen Dec. 6, 1910 1,189,901 Armenti July 4, 1916 1,450,709 Bayles Apr. 3, 1923 1,514,262 Santmeyer Nov. 4, 1924 1,524,711 Hodson Feb. 3, 1925 1,776,439 Kinninger Sept. 23, 1930 1,937,547 Cartlidge Dec. 5, 1933 2,532,168 Jakoubek Nov. 28, 1950 FOREIGN PATENTS Number Country Date 372,509 France Mar. 21, 1908 26,630 Great Britain Nov. 17, 1909 114,575 Australia Feb. 5, 194.2

Likewise, they cooperate together to

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2838079 *Jun 18, 1954Jun 10, 1958Abendroth Richard EDrill mounting
US3330602 *Oct 14, 1965Jul 11, 1967Riley George RHand-manipulated, hydraulic digging tool
US6467741 *Mar 30, 2001Oct 22, 2002Lung Ching ShihSteel prop capable of bearing bidirectional applied force
US7490440 *Sep 16, 2003Feb 17, 2009Derrek William BattySupport device for a rib
U.S. Classification173/35, 254/13, 248/354.4, 173/145, 173/42, 248/200.1, 173/36
International ClassificationE21D15/00, E21D15/24, E21B15/00
Cooperative ClassificationE21D15/24, E21B15/006
European ClassificationE21D15/24, E21B15/00K