US2730334A - Ventilating hole drilling machine supporting frame - Google Patents
Ventilating hole drilling machine supporting frame Download PDFInfo
- Publication number
- US2730334A US2730334A US497292A US49729255A US2730334A US 2730334 A US2730334 A US 2730334A US 497292 A US497292 A US 497292A US 49729255 A US49729255 A US 49729255A US 2730334 A US2730334 A US 2730334A
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- US
- United States
- Prior art keywords
- drill
- bars
- bar
- carried
- drilling machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 title description 7
- 238000004873 anchoring Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
- Y10T408/556—Tool supporting wheel
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
- Y10T408/561—Having tool-opposing, work-engaging surface
- Y10T408/5623—Having tool-opposing, work-engaging surface with presser foot
- Y10T408/56253—Base supported machine
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
- Y10T408/561—Having tool-opposing, work-engaging surface
- Y10T408/5626—Having tool-opposing, work-engaging surface with means to move Tool relative to other work-engaging structure along tool-axis
- Y10T408/5627—Having sliding engagement therewith
- Y10T408/56275—Screw coaxial with Tool
Definitions
- This invention relates to a ventilating hole-drilling machine supporting frame, and has for one of its objects the production of a simple andefiicient means for supporting a machine for drilling holes under windows in existing buildings to provide for the insertion therein of fresh air intakes for air-conditioningequipment, and the like.
- a further object of this invention is the production of a simple and efiicient frame for supportinga-drillinteriorly of a wall of a building to facilitate the drillingo'fa hole under a window of an existing building, theframebeing so constructed as to extend through a window and to engage both the inner and outer faces of the wall forthe purpose of efficiently holding and-guiding a drill-during operation.
- Figure 1 is a side elevational view of-the'drilling machine supporting frame, certain parts being'broken away, and certain parts being shown in section;
- Figure '2 is a horizontal sectional view-taken on line 2-2 of Figure l, certain parts'being broken away, :and certain parts being eliminated;
- Figure 3 is a fragmentary top plan'view of the drill feeding bar and its associated-parts
- Figure 5 is an enlarged fragmentary side elevational view of the drill'supporting trackway
- Figure 6 isa transverse sectional viewtaken on line 6-6 of Figure -5;
- Figure 7 is an enlargedtransverse:sectional viewofithe drill carriage
- Figure 8 is an enlarged fragmentary vertical sectional view of the hanger frame
- Figure 9 is a vertical sectional view of the hanger frame taken on line Q-9 of Figure 8.
- Figure 1G is an enlarged fragmentary view showing the inner face of the drill feeding bar, one of the suppor F ing rods being shown in transverse section, this being a modified form of the drill feeding bar;
- Figure 11 is an enlarged fragmentary top plan view of the structure shown in Figure Figure 12 is a sectional view taken on line 1212 of Figure 11.
- 10 designates the base rails of the carriage track which is adapted to rest upon a suitable support S, shown in dotted line in Figure 1.
- Track rails 11 are connected at their forward ends to the base rails it by means of hinges 12.
- the base rails are braced by transverse braces 13 and the track rails 11 are braced by the transverse braces 14.
- the track rails 11 are held at a proper angle relative to the base rails 10 by suitable upstanding braces, such as the brace 15 shown in Figure 1, preferably one 2,730,334 Patented Jan. 10, 1956 for each track rail located near the rear 'end of each track rail.
- Ahanger frame 16 is adapted to engage the wall of a building, as shown, and this hanger frame 16 comprises a pair of outer vertical parallel angle bars 17 and 18 and iapair-of inner vertical parallel angle bars 19 and 20.
- the outer vertical bars 17 and 18 are-transversely braced in :spaced relation by means of the angle bar 21.
- the inner vertical bars 19 and 211 are transversely braced in spaced relation by means of the angle bar22.
- a connecting rod 23 is fixed at one end 24 to the upper end of the angle bar 17 and its opposite threaded end carries a'lockwing nut 25 which engages the inner face of the angle bar 19.
- the threaded end of the rod 23 passes through a sleeve :26 at the upper end of the angle bar 19, and a wing nut 27 is threaded upon the outer extremityof thearod '23 to secure the rod 23 to the outer face of the sleeve 26.
- a 'rod 23 is similarly secured at its inner end to the angle bar 18 and its outer end extends through the sleeve 26 -of the angle bar 2%, and is similarly anchored to the sleeve 26 in the same manner as described relative to the sleeve 26.
- the bar 19 carries a clamping block 36 near-its lower end and the bar 20 carries a clamping block 37 near its lower end. These blocks 36 and 37 engage the frontface of the wall W. In this manner, the'hanger frame 16 is clamped against the front .andirear faces of the wall W, while .the rods 23, .29, 23 and23 extend through the window W, to connect the upper .ends' of the bars'17 and 18 to the upper ends of the bars 18 and 19.
- Thetrackirails 11 are held at a selected angle by the bracing means -15, and thelink 38 whichis anchored at one end in the-socket39 carried by the lower end of the vertical angle bars 19 and 20, as shown in detail in Figure '5.
- the opposite .end IOfrI'hC-lillk 38 is selectively and removably fitted in the sockets 40 formed preferably in the sides of both rails 11.
- a protector plate 41 having apertures 42 registering with the sockets 40, is carried by both rails in which the sockets 40 are formed.
- the angle of the track rails 11 may be changed to accommodate the work which is being performed, and to support the drill D, hereinafter described, at a selected angle which may range from horizontal to a pitch of more than thirty degrees.
- a carriage 43 preferably formed of channel-type construction, carries supporting wheels or rollers 44 which wheels or rollers 44 travel upon the track rails 11, as shown in Figures 1 and 7.
- Drill supporting plates 45 and 46 are carried by the carriage 43, and are provided with a plurality of apertures 47 and 48, respectively, to facilitate securing the drill D in a selected position between the plates 45 and 46.
- the present device is designed for use in conjunction with a large carbide or diamond-tipped masonry core drill of a conventional type which is sold throughout the country.
- the drill is adapted to drill holes three to six inches in diameter, and the present apparatus is adapted to maintain a constant pressure upon the bit to provide the desired cutting action.
- This structure furnishes proper mechanical assistance to accomplish the desired results.
- the rear of the drill ;D engages the bearing block 49, and this block is carried by the transversely extending drill feeding bar 50 through which the anchoring bars 51 and 52 extend.
- These anchoring bars 51 and 52 are hooked or anchored at their inner ends in selected vertically aligned apertures 53 formed in the vertical bars 19 and 20, and the outer ends pass through the drill feeding bar 50.
- Wing nuts 54 and 55 are carried by the bars 51 and 52 and engage the drill feeding bar 50 to facilitate feeding the drill D toward the work as these wing nuts are adjusted.
- the carriage 43 will feed the drill toward the work by gravity and pressure will be applied upon the bearing block 49 and to the drill as the nuts 54 and 55 are threaded toward the work, to move the bar 50 downwardly toward the work.
- the anchoring bar 50 may be shaped from metal or other material and is provided with a central longitudinal rib portion 56 which is longitudinally slotted, as shown at 57 in Figures 10 and 12.
- a journal portion is provided at each end of the bar 50, such as the journal portion 58 through which the bars, such as the bar 51*, extend.
- a bearing block 49 is carried by the anchoring bar 50*.
- a wing nut 54 is carried by the bars 51 and a similar wing nut is carried by the other bar at the opposite end of the anchoring bar 50 in a similar manner to the nuts 54 and 55, shown in Figure 2.
- a device of the class described comprising a hanger frame adapted to extend through a window opening, said hanger frame having depending means for clamping against the respective inner and outer faces of a wall below the window, a trackway connected to said hanger frame, and a drill carriage carried by said trackway for feeding a drill carried by said carriage into operative engagement with a wall upon which said device is mounted.
- adjustable drill feeding means is carried by said carriage for adjusting a drill mounted upon said carriage toward the work.
- said hanger frame comprises a pair of inner vertical bars and a pair of outer vertical bars, rods connecting the upper ends of said inner bars to the upper ends of the outer bars, and means adjustably holding said rods in engagement with said outer bars.
- said hanger frame comprises a pair of inner vertical bars and a pair of outer vertical bars, rods connecting the upper ends of said inner bars to the upper ends of the outer bars, means adjustably holding said rods in engagement with said outer bars, and clamping blocks carried by the lower ends of said vertical bars.
- a device as defined in claim 1, wherein the said trackway comprises a base, and a pair of track rails hinged to the forward end of said base.
- a device as defined in claim l wherein the said trackway comprises a base, a pair of track rails hinged to the forward end of said base, and adjustable means connecting said rails to said hanger frame for holding said track rails at a selected angle relative to said hanger frame.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
Jan. 10, 1956 A. L. SULLIVAN VENTILATING HOLE DRILLING MACHINE SUPPORTING FRAME Filed March 28, 1955 2 Sheets-Sheet l hhlmu: m
INVENTOR fiRCH/E L, SULLIVAN fl/S ATTORNEY Jan. 10, 1956 A. SULLIVAN VENTILATING HOLE DRILLING MACHINE SUPPORTING FRAME 2 Sheets-Sheet 2 Filed March 28. 1955 INVENTOR L V/i/V Ms ATTORNEY United States Patent vnNTrLArnsG HOLE DRILLING MACHINE SUPPORTING FRAME Archie L. dullivamBirmingham, Ala. Application March 28, 1955, Serial N0.'49 7, 292
9 Claims. {(C]. 255*51) This invention relates to a ventilating hole-drilling machine supporting frame, and has for one of its objects the production of a simple andefiicient means for supporting a machine for drilling holes under windows in existing buildings to provide for the insertion therein of fresh air intakes for air-conditioningequipment, and the like.
A further object of this invention is the production of a simple and efiicient frame for supportinga-drillinteriorly of a wall of a building to facilitate the drillingo'fa hole under a window of an existing building, theframebeing so constructed as to extend through a window and to engage both the inner and outer faces of the wall forthe purpose of efficiently holding and-guiding a drill-during operation.
Other advantages and objects of the presentinvention will appear throughout the following specification and claims.
In the drawings:
Figure 1 is a side elevational view of-the'drilling machine supporting frame, certain parts being'broken away, and certain parts being shown in section;
Figure '2 is a horizontal sectional view-taken on line 2-2 of Figure l, certain parts'being broken away, :and certain parts being eliminated;
Figure 3 is a fragmentary top plan'view of the drill feeding bar and its associated-parts;
Figure 4 is an enlarged transverse sectional =view=taken on line 44 of Figure 1;
Figure 5 is an enlarged fragmentary side elevational view of the drill'supporting trackway;
Figure 6 isa transverse sectional viewtaken on line 6-6 of Figure -5;
Figure 7 is an enlargedtransverse:sectional viewofithe drill carriage;
Figure 8 is an enlarged fragmentary vertical sectional view of the hanger frame;
Figure 9 is a vertical sectional view of the hanger frame taken on line Q-9 of Figure 8;
Figure 1G is an enlarged fragmentary view showing the inner face of the drill feeding bar, one of the suppor F ing rods being shown in transverse section, this being a modified form of the drill feeding bar;
Figure 11 is an enlarged fragmentary top plan view of the structure shown in Figure Figure 12 is a sectional view taken on line 1212 of Figure 11.
By referring to the drawings in detail, it will be seen that 10 designates the base rails of the carriage track which is adapted to rest upon a suitable support S, shown in dotted line in Figure 1. Track rails 11 are connected at their forward ends to the base rails it by means of hinges 12. The base rails are braced by transverse braces 13 and the track rails 11 are braced by the transverse braces 14. The track rails 11 are held at a proper angle relative to the base rails 10 by suitable upstanding braces, such as the brace 15 shown in Figure 1, preferably one 2,730,334 Patented Jan. 10, 1956 for each track rail located near the rear 'end of each track rail.
.A connecting rod 23 is fixed at one end 24 to the upper end of the angle bar 17 and its opposite threaded end carries a'lockwing nut 25 which engages the inner face of the angle bar 19. The threaded end of the rod 23 passes through a sleeve :26 at the upper end of the angle bar 19, and a wing nut 27 is threaded upon the outer extremityof thearod '23 to secure the rod 23 to the outer face of the sleeve 26. A 'rod 23 is similarly secured at its inner end to the angle bar 18 and its outer end extends through the sleeve 26 -of the angle bar 2%, and is similarly anchored to the sleeve 26 in the same manner as described relative to the sleeve 26. In this manner the upper ends of the angle bars v1'7 and 13 are held in proper spaced relation with respect to the upper ends of the bars '19 and- 2t Rods 23 and 29 are anchored to the transverse bar at their outer ends, and the forward threaded ends ex tend through the sleeves -30 and 31, which are carried by the respective bars 19 and 20. Wing nuts 32and33 anchor the forward ends of the rods 23 and 29 to the respective bars '19 and 2d. .The bar 17 carries a clamping block 34 near its lower end and the bar 18 carries a clamping block 35 near its lowerend for clamping engagement against the outer face of the wall W, shown in-dotted lines'below the window W. The bar 19 carries a clamping block 36 near-its lower end and the bar 20 carries a clamping block 37 near its lower end. These blocks 36 and 37 engage the frontface of the wall W. In this manner, the'hanger frame 16 is clamped against the front .andirear faces of the wall W, while .the rods 23, .29, 23 and23 extend through the window W, to connect the upper .ends' of the bars'17 and 18 to the upper ends of the bars 18 and 19.
Thetrackirails 11 are held at a selected angle by the bracing means -15, and thelink 38 whichis anchored at one end in the-socket39 carried by the lower end of the vertical angle bars 19 and 20, as shown in detail in Figure '5. The opposite .end IOfrI'hC-lillk 38 is selectively and removably fitted in the sockets 40 formed preferably in the sides of both rails 11. A protector plate 41 having apertures 42 registering with the sockets 40, is carried by both rails in which the sockets 40 are formed. The angle of the track rails 11 may be changed to accommodate the work which is being performed, and to support the drill D, hereinafter described, at a selected angle which may range from horizontal to a pitch of more than thirty degrees.
A carriage 43 preferably formed of channel-type construction, carries supporting wheels or rollers 44 which wheels or rollers 44 travel upon the track rails 11, as shown in Figures 1 and 7. Drill supporting plates 45 and 46 are carried by the carriage 43, and are provided with a plurality of apertures 47 and 48, respectively, to facilitate securing the drill D in a selected position between the plates 45 and 46.
The present device is designed for use in conjunction with a large carbide or diamond-tipped masonry core drill of a conventional type which is sold throughout the country. The drill is adapted to drill holes three to six inches in diameter, and the present apparatus is adapted to maintain a constant pressure upon the bit to provide the desired cutting action. This structure furnishes proper mechanical assistance to accomplish the desired results. The rear of the drill ;D engages the bearing block 49, and this block is carried by the transversely extending drill feeding bar 50 through which the anchoring bars 51 and 52 extend. These anchoring bars 51 and 52 are hooked or anchored at their inner ends in selected vertically aligned apertures 53 formed in the vertical bars 19 and 20, and the outer ends pass through the drill feeding bar 50. Wing nuts 54 and 55 are carried by the bars 51 and 52 and engage the drill feeding bar 50 to facilitate feeding the drill D toward the work as these wing nuts are adjusted.
It will be noted that when the track rails 11 are at an angle, or are on an incline, the carriage 43 will feed the drill toward the work by gravity and pressure will be applied upon the bearing block 49 and to the drill as the nuts 54 and 55 are threaded toward the work, to move the bar 50 downwardly toward the work.
As shown in Figures 10 to 12, inclusive, the anchoring bar 50 may be shaped from metal or other material and is provided with a central longitudinal rib portion 56 which is longitudinally slotted, as shown at 57 in Figures 10 and 12. A journal portion is provided at each end of the bar 50, such as the journal portion 58 through which the bars, such as the bar 51*, extend. A bearing block 49 is carried by the anchoring bar 50*. A wing nut 54 is carried by the bars 51 and a similar wing nut is carried by the other bar at the opposite end of the anchoring bar 50 in a similar manner to the nuts 54 and 55, shown in Figure 2. These, however, are only structural details which may be varied within the function of the invention.
It should be understood that certain detail changes in the structure and arrangement of parts may be employed without departing from the function of the invention.
Having described the invention, what is claimed as new 1. A device of the class described comprising a hanger frame adapted to extend through a window opening, said hanger frame having depending means for clamping against the respective inner and outer faces of a wall below the window, a trackway connected to said hanger frame, and a drill carriage carried by said trackway for feeding a drill carried by said carriage into operative engagement with a wall upon which said device is mounted.
2. A device as defined in claim 1, wherein adjustable drill feeding means is carried by said carriage for adjusting a drill mounted upon said carriage toward the work.
3. A device as defined in claim 1, wherein said hanger frame comprises a pair of inner vertical bars and a pair of outer vertical bars, rods connecting the upper ends of said inner bars to the upper ends of the outer bars, and means adjustably holding said rods in engagement with said outer bars.
4. A device as defined in claim 1, wherein said hanger frame comprises a pair of inner vertical bars and a pair of outer vertical bars, rods connecting the upper ends of said inner bars to the upper ends of the outer bars, means adjustably holding said rods in engagement with said outer bars, and clamping blocks carried by the lower ends of said vertical bars.
5. A device as defined in claim 1, wherein the said trackway comprises a base, and a pair of track rails hinged to the forward end of said base.
6. A device as defined in claim l, wherein the said trackway comprises a base, a pair of track rails hinged to the forward end of said base, and adjustable means connecting said rails to said hanger frame for holding said track rails at a selected angle relative to said hanger frame.
7. A device as defined in claim 1, wherein a drill supporting means is carried by said carriage, said device also comprising anchoring means connected to said hanger frame, a drill feeding bar adjustably secured to said last mentioned anchoring means, and means carried by said feeding bar for engaging a drill carried by said carriage to facilitate the feeding of said drill.
8. A device as defined in claim 1, wherein a drill supporting means is carried by said carriage, said device also comprising anchoring means connected to said hanger frame, a drill feeding bar adjustably secured to said last mentioned anchoring means, means carried by said feeding bar for engaging a drill carried by said carriage to facilitate the feeding of said drill, and means carried by said anchoring means and engaging said feeding bar to facilitate the adjustment of said feeding bar.
9. A device as defined in claim 1, wherein a drill supporting means is carried by said carriage, said device also comprising anchoring means connected to said hanger frame, a drill feeding bar adjustably secured to said last mentioned anchoring means, means carried by said feeding bar for engaging a drill carried by said carriage to facilitate the feeding of said drill, and said anchoring means comprising a plurality of bars adjustably connected to said hanger frame.
References Cited in the file of this patent UNITED STATES PATENTS 2,023,027 Mitchell Dec. 3, 1935
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US497292A US2730334A (en) | 1955-03-28 | 1955-03-28 | Ventilating hole drilling machine supporting frame |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US497292A US2730334A (en) | 1955-03-28 | 1955-03-28 | Ventilating hole drilling machine supporting frame |
Publications (1)
Publication Number | Publication Date |
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US2730334A true US2730334A (en) | 1956-01-10 |
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ID=23976253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US497292A Expired - Lifetime US2730334A (en) | 1955-03-28 | 1955-03-28 | Ventilating hole drilling machine supporting frame |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2993685A (en) * | 1956-12-11 | 1961-07-25 | Joy Mfg Co | Drilling apparatus |
US3285102A (en) * | 1964-05-04 | 1966-11-15 | Northrop Corp | Drilling assembly |
US3967687A (en) * | 1974-07-29 | 1976-07-06 | Fowler Dwight W | Curb drain hole drill |
US4009545A (en) * | 1973-06-26 | 1977-03-01 | Merchants National Bank Of Manchester | Apparatus for pipe-to-manhole sealing |
EP0419971A2 (en) * | 1989-09-28 | 1991-04-03 | Schröder, Günter, Dr.-Ing. | Method and device for remote controlled working of concrete walls |
US5927909A (en) * | 1997-04-03 | 1999-07-27 | Valmet Corporation | Method and device for drilling holes into a mantle of a cylinder of a paper machine |
US6264405B1 (en) | 1997-04-03 | 2001-07-24 | Valmet Corporation | Method and device for drilling holes into the mantle of a cylinder or equivalent of a paper machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2023027A (en) * | 1935-12-03 | mitchell |
-
1955
- 1955-03-28 US US497292A patent/US2730334A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2023027A (en) * | 1935-12-03 | mitchell |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2993685A (en) * | 1956-12-11 | 1961-07-25 | Joy Mfg Co | Drilling apparatus |
US3285102A (en) * | 1964-05-04 | 1966-11-15 | Northrop Corp | Drilling assembly |
US4009545A (en) * | 1973-06-26 | 1977-03-01 | Merchants National Bank Of Manchester | Apparatus for pipe-to-manhole sealing |
US3967687A (en) * | 1974-07-29 | 1976-07-06 | Fowler Dwight W | Curb drain hole drill |
EP0419971A2 (en) * | 1989-09-28 | 1991-04-03 | Schröder, Günter, Dr.-Ing. | Method and device for remote controlled working of concrete walls |
EP0419971A3 (en) * | 1989-09-28 | 1992-05-13 | Guenter Dr. Schroeder | Method and device for remote controlled working of concrete walls |
US5927909A (en) * | 1997-04-03 | 1999-07-27 | Valmet Corporation | Method and device for drilling holes into a mantle of a cylinder of a paper machine |
US6264405B1 (en) | 1997-04-03 | 2001-07-24 | Valmet Corporation | Method and device for drilling holes into the mantle of a cylinder or equivalent of a paper machine |
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