US3273658A - Feeding slide arrangement for rock drilling - Google Patents

Feeding slide arrangement for rock drilling Download PDF

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US3273658A
US3273658A US3273658DA US3273658A US 3273658 A US3273658 A US 3273658A US 3273658D A US3273658D A US 3273658DA US 3273658 A US3273658 A US 3273658A
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slide
dovetail
pair
feed bar
drilling machine
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/081—Screw-and-nut feed mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
    • Y10T74/18648—Carriage surrounding, guided by, and primarily supported by member other than screw [e.g., linear guide, etc.]

Definitions

  • This invention relates to feeding devices for rock drilling machines or the like, and more particularly to a feeding slide arrangement in which the rock drilling machine is movably arranged on guiding means on a feed bar and is fed and retracted along the guiding means by means of a driving device of suit-able type, for example a power driven feed screw and a feed nut.
  • the drilling machine and especially its cylinder have been formed integrally with ribs or guiding flanges intended for guiding engagement with the guiding means of the feed bar.
  • the disadvantage of this arrangement is that the flanges normally wear down before the cylinder as such is used up, which means only a partial utilization of the available operable life of the cylinder.
  • flanks therefore have been placed on a special slide, to which the cylinder of the drilling machine is attached by means of suitable connecting ears, standards, and connecting bolts.
  • the consequences for example for a feed screw will be an accelerated Wear of the threads and in the case of a feed cylinder an increased wear of the cylinder surfaces.
  • a drilling machine on a slide and a wedge connection between said drilling machine and said slide and incorporating a locking wedge for fixedly attaching said drilling machine to said slide, with the locking wedge being arranged to provide the sole locking means between the drilling machine and the slide.
  • the wedge arrangement makes possible an extremely quick and secure mounting of the drilling machine on the slide and in an especially advantageous embodiment there is in connection with the insertion of the locking wedge brought about a self aligning of the drilling machine in the direction of drilling.
  • the driving device in connection with the invention will be fully relieved from the weight of the drilling machine even in case of heavy wear of the guiding flanges, through which fact there is gained an increased operable life of the feeding device and its drive. Additionally no moments of flexure are transmitted in connection with the invention to the screw as a result of Wear causing slanting position of the slide in its guiding means.
  • FIG. 1 show .a vertical section through a feeding slide arrangement according to the invention.
  • FIG. 2 shows Patented Sept. 20, 1966 a section substantially on line IIII in FIG. 1.
  • FIG. 3 shows a section on line III-III in FIG. 1.
  • FIG. 4 shows a section of a modified arrangement and corresponding to FIG. 3.
  • FIG. 5 shows a locking wedge used in connection with the invention.
  • 1 designates a feed bar for a rock drilling machine intended to be used together with a conventional drill rig of any suitable construction.
  • the feed bar 1 may for example be of aluminum.
  • suitable profile irons or steel guideways 2 extending in parallel spaced apart relation along the feed bar 1, and providing a guiding means for the feeding and retraction of a drilling machine along the feed bar.
  • a feed screw 3 is journalled in well-known manner at the ends of the feed bar 1 and may 'be driven by a rotating air motor, not shown.
  • a feed nut 4 Displaceably arranged along the feed screw 3 is a feed nut 4, which by means of an end not 5 is connected to a driving body 6.
  • the driving body 6 is provided with a pivot 7 projecting vertically in upward direction.
  • a slide 8 Displaceably arranged on the guideways 2 is a slide 8 which is provided with a central opening 9 into which the pivot 7 of the driving body 6 projects slidably.
  • the pivot 7 extends perpendicular to the slide 8.
  • a stepped elevation 10 the front and rear steps of which are formed by dovetail surfaces 11 and 12, which are inclined vertically in a manner to form an acute angle with the slide 8.
  • the dovetail surface 12 also has a slight horizontal inclination with respect to the dovetail surface 11, FIG. 3.
  • the drilling machine which may be of any suitable conventional construction, for example a compressed air driven percussive drill, in the figures there is shown only the cylinder 13, and the parts of the drilling machine are joined by means of side bolts 14, FIG. 2.
  • the cylinder 13 rests at a bottom surface against the stepped elevation 10 and the slide 8 and is provided with opposed dovetail surfaces 16 and 17.
  • dovetail surfaces one, 16 directly engages the dovetail surface 11 of the slide 8, while between the dovetail surface 12 of the slide and the dovetail surface 17 of the cylinder, which owing to the horizontal inclination of the surface 12 taper laterally, there is interposed a locking Wedge 18 of rhombic cross section, which tightly fits between the tape-ring dovetail surfaces 12 and 17, thereby firmly locking the cylinder 13 and the drilling machine to the slide 8 against relative movement in the longitudinal as well as the transverse direction of the slide.
  • the wedge 18 forms the sole locking means to be inserted in order to perform such locking between the drilling machine and the slide.
  • the locking wedge 18 extends transversely with respect to the feed bar 1 and is in locked position normally disposed between the upper edges of the opposed guideways 2, which form retaining means for the wedge 18 in locked position.
  • the locking wedge 18 will be retained in a secured position between the guideways 2 and cannot be taken or shaken out until the slide has been returned to the end position in which the recesses 19 are aligned with the wedge 18.
  • the modification according to FIG, 4 shows transverse dovetail surfaces 20, 21 in the slide 8 and the cylinder 13, respectively, which are are shaped and allow, when the wedge 18 is loosened, turning of the drilling machine on said surfaces on an upright axis through the common center of the radii defining the are shaped dovetail surfaces 20, 21.
  • the arrangement of the wedge 18 and the cooperating dovetail surfaces 12, 17 is such, that tight insection of the wedge 18 will turn the drilling machine to provide automatic self alignment thereof in the correct direction of drilling.
  • the wedge 18 may, as shown in FIG. 5, be formed with even surfaces, alternatively the wedge according to FIG. 6 may be formed with a central surface of contact 23 at one side and at the opposite side with two surfaces of contact 24, 25 adjacent the ends of the wedge 18.
  • the wedge portions adjoining the surfaces 23, 24, 25 are 'formed with reduced thickness and are resilient in a manner to place the wedge under considerable precompression between the dovetail surfaces 12 and 17 in order to provide a secure grip and insensibility to vibrations.
  • the power driven driving device consisting of the feed screw 3, the feed nut 4, the end nut 5, and the driving body 6 is by means of the pivot 7 in axially slidable and pivotal engagement with the opening 9 of the slide 8 in a manner to create free movability between the slide and the driving device in directions perpendicular to the slide 8 as well as swingability on the pivot 7.
  • the circular engagement by means of a pivot between the driving device and the slide 8 additionally gives the slide freedom to occupy misaligned positions in the guideways 2 without there being transmitted any moments to the feed screw 3 to cause increased wear.
  • the pivot may of course alternatively form a part of the slide, in which case the cooperating opening making possible free axial movement of the pivot has to be provided on the driving body 6.
  • a feeding slide arrangement for rock drilling machines or the like comprising a feed bar, spaced apart guideways extending in parallel relation along said feed bar, a slide movable along said feed bar on said guideways, a driving device on said feed bar for feeding and retracting said slide along said guideways, a drilling machine on said slide, a first pair of dovetail surfaces in opposed arrangement on said drilling machine, a second pair of dovetail surfaces in opposed arrangement of said slide and extending transversely to said guideways and substantially co-planar with the upper edges thereof, one dovetail surface of said first pair being in engagement upon assembly with one dovetail surface of said second pair while the said second dovetail surface of the said first pair is not in engagement with the said second dovetail surface of the said second pair leaving a space therebetween, and a removable locking wedge insertable in the said space between the said second two dovetail surfaces of said pairs providing the sole means for fixedly locking said drilling machine to said slide.
  • a feeding arrangement for rock drilling machines -or the like comprising a feed bar, spaced apart guiding -means extending in parallel relation along said feed bar,
  • a driving device on said feed bar for feeding and retracting said slide along said guiding means, a drilling machine on said slide, a first pair of transverse dovetail surfaces in opposed arrangement on said drilling machine, a second pair of transverse dovetail surfaces in opposed arrangement on said slide, one dovetail surface of said first pair being in engagement upon assembly with one dovetail surface of said second pair while the said second dovetail surface of the said first pair is not in engagement with the said second dovetail surface of said second pair leaving a space therebetween, a removable looking wedge insertable in said space between the said second two dovetail surfaces of said pairs transversely of said slide and guiding means and providing the sole means for fixedly locking said drilling machine to said slide, and retaining means on said feed bar including elongated retaining edges extending along said feed bar adjacent the outer ends of said locking wedge for retaining said locking wedge in locked position during reciprocation of said slide on said feed bar.
  • a feeding slide arrangement for rock drilling machines or the like comprising a feed bar, spaced apart guiding means extending in parallel relation along said feed bar, a slide movable along said feed bar on said guiding means, power drive means on said feed bar and including a driving member for feeding and retracting said slide along said guiding means, a drilling machine, means for fixedly attaching said drilling machine to said slide, and pivot means engaged between said slide and said member and extending perpendicularly to said slide for providing free axial movability as well as swingability between said slide and said member about the axis of said pivot means.
  • the combination which comprises a first pair of opposed dovetail surfaces on said rock drill to be fed and retracted, a second pair of opposed dovetail surfaces on said slide, both said pairs of opposed dovetail surfaces being transverse to said feed bar and one dovetail surface of each pair being arc-shaped and in engagement with the other upon assembly of said rock drill on said slide while the second said dovetail surface of the said first pair is not in engagement with the said second dovetail surface of the said second pair leaving a space therebetween, and a removable locking wedge insertable in said space between machine to said slide and for automatically centering and positioning said rock drill parallel to said guiding means, and raised axial edge portions along said
  • the combination which comprises a feed screw rotatably disposed in said feed bar below said guiding means and connected to said power means for the rotation thereof, a feed nut disposed on said feed screw and movable therealong upon rotation thereof, a vertical cylindrical pivot disposed on the top of said feed nut and extending into said bore in said slide providing for sliding vertical movement between said slide and said feed nut, and means disposed between said slide and said device to be fed and retracted for fixedly attaching said device to said slide.
  • said wedge means is a single tapered wedge with opposed inclined surfaces forcooperating with said inclined engaging surfaces on said device and said slide.
  • a feeding slide arrangement for rock drilling machines as set forth in claim 2 in which said retaining means are formed by opposed raised edge portions of said guiding means, with a lateral recess adjacent one end thereof for insertion and removal of said locking wedge.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Description

p 20, 1956 s. L. YTTERFORS ETAL 3,273,553
FEEDING SLIDE ARRANGEMENT FOR ROCK DRILLING MACHINES OR THE LIKE Filed March 6, 1962 2 Sheets-Sheet 1 I Fig. 2 3
pt 0. 9 s. L. YTTERFORS ETAL 3,
FEEDING SLIDE ARRANGEMENT FOR ROCK DRILLING MACHINES OR THE LIKE Filed March 6, 1962 2 Sheets-Sheet 2 United States Patent M 3,273,658 FEEDING SLIDE ARRANGEMENT FOR ROCK DRILLING MACHINES OR THE LIKE Sven Laurentius Ytterfors and like Eugn Jansson, Nacka, Sweden, assignors to Atlas Copco Aktiebolag, Nacka, Sweden, a corporation of Sweden Filed Mar. 6, 1962, Ser. No. 177,872 Claims priority, application Sweden, Mar. 16, 1961, 2,801/ 61 9 Claims. (Cl. 173-141) This invention relates to feeding devices for rock drilling machines or the like, and more particularly to a feeding slide arrangement in which the rock drilling machine is movably arranged on guiding means on a feed bar and is fed and retracted along the guiding means by means of a driving device of suit-able type, for example a power driven feed screw and a feed nut.
Previously the drilling machine and especially its cylinder have been formed integrally with ribs or guiding flanges intended for guiding engagement with the guiding means of the feed bar. The disadvantage of this arrangement is that the flanges normally wear down before the cylinder as such is used up, which means only a partial utilization of the available operable life of the cylinder.
In a more advantageous alternative the flanks therefore have been placed on a special slide, to which the cylinder of the drilling machine is attached by means of suitable connecting ears, standards, and connecting bolts. The vibrations of the drilling machine and the difficulty in providing a rigid tightening by means of the bolts, however, reduce the value of the advantages gained by this solution.
A drawback which is inherent in the integral flange arrangement on the cylinder as well as in the disposition of the flanges on a special slide, is the fact that as Wear arises during use a gradually increasing part of the weight of the drilling machine will act directly on the driving device. The consequences for example for a feed screw will be an accelerated Wear of the threads and in the case of a feed cylinder an increased wear of the cylinder surfaces.
It is the object of the invention to eliminate the above mentioned disadvantages. For these and other purposes according to the invention there is provided a drilling machine on a slide, and a wedge connection between said drilling machine and said slide and incorporating a locking wedge for fixedly attaching said drilling machine to said slide, with the locking wedge being arranged to provide the sole locking means between the drilling machine and the slide.
The elimination of standards, connecting ears and bolts leads to a considerable gain as regards the weight. The wedge arrangement makes possible an extremely quick and secure mounting of the drilling machine on the slide and in an especially advantageous embodiment there is in connection with the insertion of the locking wedge brought about a self aligning of the drilling machine in the direction of drilling. The driving device in connection with the invention will be fully relieved from the weight of the drilling machine even in case of heavy wear of the guiding flanges, through which fact there is gained an increased operable life of the feeding device and its drive. Additionally no moments of flexure are transmitted in connection with the invention to the screw as a result of Wear causing slanting position of the slide in its guiding means.
The invention will be described more in detail hereinafter with the help of the accompanying drawings, which in FIG. 1 show .a vertical section through a feeding slide arrangement according to the invention. FIG. 2 shows Patented Sept. 20, 1966 a section substantially on line IIII in FIG. 1. FIG. 3 shows a section on line III-III in FIG. 1. FIG. 4 shows a section of a modified arrangement and corresponding to FIG. 3. FIG. 5 shows a locking wedge used in connection with the invention. FIG. 6, finally, shows a modified locking wedge.
In the figures, 1 designates a feed bar for a rock drilling machine intended to be used together with a conventional drill rig of any suitable construction. The feed bar 1 may for example be of aluminum. By means of bolts, not shown, there are aflixed to the feed bar 1 suitable profile irons or steel guideways 2 extending in parallel spaced apart relation along the feed bar 1, and providing a guiding means for the feeding and retraction of a drilling machine along the feed bar. For such feeding and retraction there may be provided on the feed bar a conventional power feed of any suitable well known construction. In the embodiment shown a feed screw 3 is journalled in well-known manner at the ends of the feed bar 1 and may 'be driven by a rotating air motor, not shown. Displaceably arranged along the feed screw 3 is a feed nut 4, which by means of an end not 5 is connected to a driving body 6. The driving body 6 is provided with a pivot 7 projecting vertically in upward direction.
Displaceably arranged on the guideways 2 is a slide 8 which is provided with a central opening 9 into which the pivot 7 of the driving body 6 projects slidably. The pivot 7 extends perpendicular to the slide 8. On the plane slide 8 there is provided a stepped elevation 10 the front and rear steps of which are formed by dovetail surfaces 11 and 12, which are inclined vertically in a manner to form an acute angle with the slide 8. The dovetail surface 12 also has a slight horizontal inclination with respect to the dovetail surface 11, FIG. 3.
Of the drilling machine, which may be of any suitable conventional construction, for example a compressed air driven percussive drill, in the figures there is shown only the cylinder 13, and the parts of the drilling machine are joined by means of side bolts 14, FIG. 2. The cylinder 13 rests at a bottom surface against the stepped elevation 10 and the slide 8 and is provided with opposed dovetail surfaces 16 and 17. Of these dovetail surfaces one, 16, directly engages the dovetail surface 11 of the slide 8, while between the dovetail surface 12 of the slide and the dovetail surface 17 of the cylinder, which owing to the horizontal inclination of the surface 12 taper laterally, there is interposed a locking Wedge 18 of rhombic cross section, which tightly fits between the tape- ring dovetail surfaces 12 and 17, thereby firmly locking the cylinder 13 and the drilling machine to the slide 8 against relative movement in the longitudinal as well as the transverse direction of the slide. Obviously the wedge 18 forms the sole locking means to be inserted in order to perform such locking between the drilling machine and the slide. The locking wedge 18 extends transversely with respect to the feed bar 1 and is in locked position normally disposed between the upper edges of the opposed guideways 2, which form retaining means for the wedge 18 in locked position. In order to make possible the insertion or removal of the Wedge 18 between or from the dovetail surfaces 12 and 17, there are provided at one end of the feed bar 1 recesses 19, FIG. 3, in the upper portion of the guideways 2, which recesses allow lateral insertion of the wedge 18. As soon as the slide has been moved away from this position in the direction of the other end of the feed bar 1, the locking wedge 18 will be retained in a secured position between the guideways 2 and cannot be taken or shaken out until the slide has been returned to the end position in which the recesses 19 are aligned with the wedge 18.
The modification according to FIG, 4 shows transverse dovetail surfaces 20, 21 in the slide 8 and the cylinder 13, respectively, which are are shaped and allow, when the wedge 18 is loosened, turning of the drilling machine on said surfaces on an upright axis through the common center of the radii defining the are shaped dovetail surfaces 20, 21. The arrangement of the wedge 18 and the cooperating dovetail surfaces 12, 17 is such, that tight insection of the wedge 18 will turn the drilling machine to provide automatic self alignment thereof in the correct direction of drilling.
The wedge 18 may, as shown in FIG. 5, be formed with even surfaces, alternatively the wedge according to FIG. 6 may be formed with a central surface of contact 23 at one side and at the opposite side with two surfaces of contact 24, 25 adjacent the ends of the wedge 18. The wedge portions adjoining the surfaces 23, 24, 25 are 'formed with reduced thickness and are resilient in a manner to place the wedge under considerable precompression between the dovetail surfaces 12 and 17 in order to provide a secure grip and insensibility to vibrations.
The power driven driving device consisting of the feed screw 3, the feed nut 4, the end nut 5, and the driving body 6 is by means of the pivot 7 in axially slidable and pivotal engagement with the opening 9 of the slide 8 in a manner to create free movability between the slide and the driving device in directions perpendicular to the slide 8 as well as swingability on the pivot 7. Thus, in connection with wearing down of the parts of the slide 8 which cooperate with the guideways 2, the weight of the drilling machine obviously will not be able to deform the feed screw, whereby undue wear of the screw is avoided. The circular engagement by means of a pivot between the driving device and the slide 8 additionally gives the slide freedom to occupy misaligned positions in the guideways 2 without there being transmitted any moments to the feed screw 3 to cause increased wear. The pivot may of course alternatively form a part of the slide, in which case the cooperating opening making possible free axial movement of the pivot has to be provided on the driving body 6.
Obviously the axially slidable engagement by means of a pivot and an opening cooperating therewith may with equal results be used together with other power driven driving devices, for example in connection with feed cylinders.
The embodiments of the invention above described and illustrated in the drawings should only be considered as examples and the invention may be modified in several different ways within the scope of the following claims.
What we claim is:
1. A feeding slide arrangement for rock drilling machines or the like comprising a feed bar, spaced apart guideways extending in parallel relation along said feed bar, a slide movable along said feed bar on said guideways, a driving device on said feed bar for feeding and retracting said slide along said guideways, a drilling machine on said slide, a first pair of dovetail surfaces in opposed arrangement on said drilling machine, a second pair of dovetail surfaces in opposed arrangement of said slide and extending transversely to said guideways and substantially co-planar with the upper edges thereof, one dovetail surface of said first pair being in engagement upon assembly with one dovetail surface of said second pair while the said second dovetail surface of the said first pair is not in engagement with the said second dovetail surface of the said second pair leaving a space therebetween, and a removable locking wedge insertable in the said space between the said second two dovetail surfaces of said pairs providing the sole means for fixedly locking said drilling machine to said slide.
2. A feeding arrangement for rock drilling machines -or the like comprising a feed bar, spaced apart guiding -means extending in parallel relation along said feed bar,
a slide movable along said feed bar on said guiding means,
a driving device on said feed bar for feeding and retracting said slide along said guiding means, a drilling machine on said slide, a first pair of transverse dovetail surfaces in opposed arrangement on said drilling machine, a second pair of transverse dovetail surfaces in opposed arrangement on said slide, one dovetail surface of said first pair being in engagement upon assembly with one dovetail surface of said second pair while the said second dovetail surface of the said first pair is not in engagement with the said second dovetail surface of said second pair leaving a space therebetween, a removable looking wedge insertable in said space between the said second two dovetail surfaces of said pairs transversely of said slide and guiding means and providing the sole means for fixedly locking said drilling machine to said slide, and retaining means on said feed bar including elongated retaining edges extending along said feed bar adjacent the outer ends of said locking wedge for retaining said locking wedge in locked position during reciprocation of said slide on said feed bar.
3. A feeding slide arrangement for rock drilling machines or the like comprising a feed bar, spaced apart guiding means extending in parallel relation along said feed bar, a slide movable along said feed bar on said guiding means, power drive means on said feed bar and including a driving member for feeding and retracting said slide along said guiding means, a drilling machine, means for fixedly attaching said drilling machine to said slide, and pivot means engaged between said slide and said member and extending perpendicularly to said slide for providing free axial movability as well as swingability between said slide and said member about the axis of said pivot means.
4. In a feeding apparatus of the character described for feeding and retracting a rock drill toward and away from a surface to be worked and having a feed bar with parallel opposed spaced apart guiding means disposed thereon, a slide movable along said feed bar in said guiding means for supporting said rock drill, and driving means in said feed bar adjacent said slide for the reciprocation thereof along said guiding means, the combination which comprises a first pair of opposed dovetail surfaces on said rock drill to be fed and retracted, a second pair of opposed dovetail surfaces on said slide, one dovetail surface of each pair being arc-shaped and in engagement with the other upon assembly of said rock drill on said slide while the said second dovetail surface of the said first pair is not in engagement with the said second dovetail surface of the said second pair leaving a space therebetween, and means insertable in said space between the said second two dovetail surfaces of the said pairs providing the sole means for fixedly locking said drilling machine to said slide and for automatically centering and positioning said rock drill parallel to said guiding means.
5. In a feeding apparatus of the character described for feeding and retracting a rock drill toward and away from a surface to be worked and having a feed bar with parallel opposed spaced apart guiding means disposed thereon, a slide movable along said feed bar and said guiding means for supporting said rock drill, and driving means in said feed bar adjacent said slide for the reciprocation thereof along said guiding means, the combination which comprises a first pair of opposed dovetail surfaces on said rock drill to be fed and retracted, a second pair of opposed dovetail surfaces on said slide, both said pairs of opposed dovetail surfaces being transverse to said feed bar and one dovetail surface of each pair being arc-shaped and in engagement with the other upon assembly of said rock drill on said slide while the second said dovetail surface of the said first pair is not in engagement with the said second dovetail surface of the said second pair leaving a space therebetween, and a removable locking wedge insertable in said space between machine to said slide and for automatically centering and positioning said rock drill parallel to said guiding means, and raised axial edge portions along said guiding means and adjacent opposite ends of said locking wedge for retaining said locking wedge in position during reciprocation of said slide.
6.In a feeding apparatus of the character described for feeding and retracting a device toward and away from a surface to be worked and having a feeding bar with parallel opposed spaced apart guiding means disposed thereon, a slide movable along said feed bar in said guiding means for supporting said device and having a cylindrical vertical bore disposed centrally thereof, and reversible power means disposed at one end of said feed bar, the combination which comprises a feed screw rotatably disposed in said feed bar below said guiding means and connected to said power means for the rotation thereof, a feed nut disposed on said feed screw and movable therealong upon rotation thereof, a vertical cylindrical pivot disposed on the top of said feed nut and extending into said bore in said slide providing for sliding vertical movement between said slide and said feed nut, and means disposed between said slide and said device to be fed and retracted for fixedly attaching said device to said slide.
7. In a feeding apparatus of the character described for feeding and retracting a device toward and away from a surface to be worked and having a feed bar with parallel opposed spaced apart guideways disposed thereon, a slide movable along said feeding bar in said guideways for supporting said device, and driving means in said feed bar adjacent said slide for the reciprocation thereof along said guideways, the combination which comprises a notch disposed on said device at one end thereof, a ridge transverse to said guideways and disposed on said slide at the end thereof adjacent said notch for engagement therewith upon assembly of said apparatus for preventing relative vertical movement between said slide and said device, an engaging surface on said device spaced from and in the same horizontal plane as said notch and inclined away from the vertical axis of said apparatus, an engaging surface on said slide spaced from and in the same horizontal plane as said ridge and inclined toward said vertical axis, said engaging surfaces upon assembly of said device op posing each other with a tapered shaped space disposed therebetween, wedge means insertable in said space for urging said notch and said ridge into firm engagement, and said ridge and said engaging surface on said slide being co-planar with the upper edges of said guideways for retaining said device against lateral movement during reciprocation of said slide.
8. Apparatus as recited in claim 7 in which said wedge means is a single tapered wedge with opposed inclined surfaces forcooperating with said inclined engaging surfaces on said device and said slide.
9. A feeding slide arrangement for rock drilling machines as set forth in claim 2 in which said retaining means are formed by opposed raised edge portions of said guiding means, with a lateral recess adjacent one end thereof for insertion and removal of said locking wedge.
References Cited by the Exammer UNITED STATES PATENTS 1,109,695 9/1914 Mosler et al 18936 1,113,531 10/1914 Ballet al 173-43 1,181,701 5/1916 Van der Velde 74424.8 1,358,889 11/1920 Smith 74-424.8 1,528,610 5/1925 Hackett 173141 1,635,934 7/1927 Gilman 173-141 2,094,353 9/1937 Gartin 173-143 FOREIGN PATENTS 20,608 1908 Great Britain. 986,160 3/1911 France.
FRED C. MATTERN, JR., Primary Examiner.
BROUGHTON G. DURHAM, MILTON KAUFMAN,
Examiners.
D. FAULCONER, L. P. KESSLER, Assistant Examiners.

Claims (1)

1. A FEEDING SLIDE ARRANGEMENT FOR ROCK DRILLING MACHINES OR THE LIKE COMPRISING A FEED BAR, SPACED APART GUIDEWAYS EXTENDING IN PARALLEL RELATION ALONG SAID FEED BAR, A DRIVING DEVICE ON SAID FEED BAR FOR FEEDING AND WAYS, A DRIVING DEVICE ON SAID FEED BAR FOR FEEDING AND RETRACTING SAID SLIDE ALONG SAID GUIDEWAYS, A DRILLING MACHINE ON SAID SLIDE, A FIRST PAIR OF DOVETAIL SURFACES IN OPPOSED ARRANGEMENT ON SAID DRILLING MACHINE, A SECOND PAIR OF DOVETAIL SURFACES ON OPPOSED ARRANGEMENT OF SAID SLIDE AND EXTENDING TRANSVERSELY TO SAID GUIDEWAYS AND SUBSTANTIALLY CO-PLANAR WITH THE UPPER EDGES THEREOF, ONE DOVETAIL SURFACE OF SAID FIRST PAIR BEING IN ENGAGEMENT UPON ASSEMBLY WITH ONE DOVETAIL SURFACE OF THE SAID PAIR WHILE THE SAID SECOND DOVETAIL SURFACE OF SAID SECOND FIRST PAIR IS NOT IN ENGAGEMENT WITH THE SAID SECOND DOVETAIL SURFACE OF THE SAID SECOND PAIR LEAVING A SPACE THEREBETWEEN, AND A REMOVABLE LOCKING WEDGE INSERTABLE IN THE SAID SPACE BETWEEN THE SAID SECOND TWO DOVETAIL SURFACES OF SAID PAIRS PROVIDING THE SOLE MEANS FOR FIXEDLY LOCKING SAID DRILLING MACHINE TO SAID SLIDE.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565185A (en) * 1967-12-07 1971-02-23 Atlas Copco Ab Slide supported rock drill
US4192393A (en) * 1978-08-15 1980-03-11 Georex Industries, Inc. Helicopter portable earth drilling apparatus
US4932481A (en) * 1987-09-04 1990-06-12 Joy Technologies Inc. Roof bolt drill support
US6202758B1 (en) * 1998-10-29 2001-03-20 Terra Ag Fuer Tiefbautechnik Compact boring apparatus for making earth bores
US20070068293A1 (en) * 2003-04-14 2007-03-29 Rudolph Buhrmann Apparatus for imparting relative movement between an oscillating member and a rail
US20090308187A1 (en) * 2008-06-13 2009-12-17 Kurt Schmid Linear actuator for reclining furniture

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GB190820608A (en) * 1908-09-30 1909-04-08 Heinrich Flottmann Improvements in Rock-drilling Machines.
US1109695A (en) * 1914-04-03 1914-09-08 Mosler Safe Co Safe or vault wall construction.
US1113531A (en) * 1907-06-29 1914-10-13 Sullivan Machinery Co Quarrying-machine.
US1181701A (en) * 1913-03-05 1916-05-02 John Frederick Van Der Velde Means for attaching rock-drilling machines to their feeding devices.
US1358889A (en) * 1920-11-16 A cokporatioii of new jebsey
US1528610A (en) * 1921-09-19 1925-03-03 Herbert H Hackett Tool mounting
US1635934A (en) * 1923-08-22 1927-07-12 George H Gilman Drilling machine
US2094353A (en) * 1935-04-29 1937-09-28 Sullivan Machinery Co Rock drill
FR986160A (en) * 1949-05-13 1951-07-27 prefabricated element for construction

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Publication number Priority date Publication date Assignee Title
US1358889A (en) * 1920-11-16 A cokporatioii of new jebsey
US1113531A (en) * 1907-06-29 1914-10-13 Sullivan Machinery Co Quarrying-machine.
GB190820608A (en) * 1908-09-30 1909-04-08 Heinrich Flottmann Improvements in Rock-drilling Machines.
US1181701A (en) * 1913-03-05 1916-05-02 John Frederick Van Der Velde Means for attaching rock-drilling machines to their feeding devices.
US1109695A (en) * 1914-04-03 1914-09-08 Mosler Safe Co Safe or vault wall construction.
US1528610A (en) * 1921-09-19 1925-03-03 Herbert H Hackett Tool mounting
US1635934A (en) * 1923-08-22 1927-07-12 George H Gilman Drilling machine
US2094353A (en) * 1935-04-29 1937-09-28 Sullivan Machinery Co Rock drill
FR986160A (en) * 1949-05-13 1951-07-27 prefabricated element for construction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565185A (en) * 1967-12-07 1971-02-23 Atlas Copco Ab Slide supported rock drill
US4192393A (en) * 1978-08-15 1980-03-11 Georex Industries, Inc. Helicopter portable earth drilling apparatus
US4932481A (en) * 1987-09-04 1990-06-12 Joy Technologies Inc. Roof bolt drill support
US6202758B1 (en) * 1998-10-29 2001-03-20 Terra Ag Fuer Tiefbautechnik Compact boring apparatus for making earth bores
US20070068293A1 (en) * 2003-04-14 2007-03-29 Rudolph Buhrmann Apparatus for imparting relative movement between an oscillating member and a rail
US7426966B2 (en) * 2003-04-14 2008-09-23 The Buhrmann Trust Apparatus for imparting relative movement between an oscillating member and a rail
US20090308187A1 (en) * 2008-06-13 2009-12-17 Kurt Schmid Linear actuator for reclining furniture

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