US2080526A - Device for holding drill bits - Google Patents
Device for holding drill bits Download PDFInfo
- Publication number
- US2080526A US2080526A US41288A US4128835A US2080526A US 2080526 A US2080526 A US 2080526A US 41288 A US41288 A US 41288A US 4128835 A US4128835 A US 4128835A US 2080526 A US2080526 A US 2080526A
- Authority
- US
- United States
- Prior art keywords
- shank
- bit
- rod
- socket
- drill bits
- 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
- 239000003517 fume Substances 0.000 description 8
- 238000005242 forging Methods 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/085—Accessories for handling work or tools handling of tools
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17905—Bottomless
- Y10T279/17914—Friction grip
Definitions
- My invention relates to bits of the kind used in rockdrills of the percussive type and wherein the bit is provided with a socket whereby it may be removably secured to the drill shaft.
- the object of the invention is to provide a device to facilitate the forging and hardening or the like of such bits whereby the said bit may be rigidly supported during the operation and easily removed when the said operation has been 1 completed.
- the invention consists in a holder for rigidly supporting drill bits of the type first above referred to during the forging, hardening or like operation and comprises a tubular shank having an end suitably formed to engage the socket of the bit and an axially disposed rigid rod capable of slidable movement in the shank and of such a length that the end thereof is adapted to project beyond that end of the shank remote from the bit when the latter is in position on the shank, whereby a blow applied to the said projecting end of the axial rod. will cause the finished bit to be ejected from its seating at the end of the shank.
- the end of the shank adapted to engage the bit may be tapered to engage a correspondingly tapered bore of the socket of the bit.
- the projecting end of the axially disposed rod may be formed with a button to define an anvil surface to prevent distortion and also to retain the rod.
- FIG. 1 is an elevation of one form of device
- Fig. 2 is a longitudinal section of Fig. 1 showing a bit held in position
- Fig. 3 is a similar section (part only being shown) with the bit displaced ready for removal.
- Fig. 4 is a plan of Fig. 1.
- a is a tubular shank which has its end b 4o tapered, in order to engage the tapered socket d of a drill bit e shown only in Figs. 2 and 3.
- Passing longitudinally through the bore of the shank a and. slidable therein is a rigid rod 1.
- the length of the rod 1 is such that both ends of the rod ,1
- buttons 2' and 9' project beyond the shank a and are formed with enlarged heads or buttons 2' and 9', respectively, serving to retain the rod slidably in the shank within the limits of the distance apart of the two buttons 2' and j.
- a collar is is sweated on the shank a, the collar having resilient claws or fingers m for tightly gripping the inner end of the bit e when seated in position, as shown in Fig. 2. These fingers effectively hold the bit from dropping off and the bit is easily removed by unseating it as shown in Fig. 3 by a blow upon the button :i to cause the rodf'toproject at the end I) of the shank thereby displacing the drill bit from its seating so that it can be removed.
- the button 7' may be omitted where desired to enable the rod to be withdrawn from the shank a at any time.
- the holder When the holder is used for hardening bits by plunging them into a hardening liquid it may be desirable to provide means for permitting the escape of fumes from between the co-operating surfaces of the bit and the holder and this may be accomplished by providing a longitudinal passage n in the end of the rod adjacent the bit 6, the said passage having a lateral branch passage 15 0 communicating with the clearance space between the rod 1 and the wall of the bore of the shank a so that the fumes can pass through the said space and out through a hole p provided at any suitable point in the shank for the purpose.
- the shank a intermediate of its ends may be of round, square, octagonal or other suitable cross section.
- a device for holding socketed drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of the bit, a collar upon said shank having spaced 30 fingers circumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the hit upon the shank, an axially slidable rigid rod disposed interiorly of the tubular shank and pro- 35 jecting through said tapered end thereof and adapted to contact with the inner end of the socket for dislodging the bit from the shank, and means in the rod and shank for permitting the escape of fumes from co-operating surfaces 40 of the socket of the bit and the rod.
- a device for holding socketed drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of 45 the bit, a collar upon said shank having spaced fingers circumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the hit upon the shank, an axially slidable rigid rod 5 disposed interiorly of the tubular shank and projecting through said tapered end thereof and adapted to contact with the inner end of the socket for dislodging the bit from the shank, means on said rod for retaining it within said 55 shank, and means in the rod and shank for permitting the escape of fumes from co-operating surfaces of the socket of the bit and the rod.
- a device for holding socketed drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of the bit, a collar upon said shank having spaced fingers oircumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the bit upon the shank, an axially slidable rigid rod in the tubular shank and projecting therefrom at both ends and adapted to contact with the inner end of the socket for dislodging the bit from the shank, said projecting ends of said rod being provided with heads for retaining said rod in said shank, and means in the rod and shank for permitting the escape of fumes from the co-operating surfaces of the socket of the bit and the rod.
- a device for holding socket drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of the bit, a collar upon said shank having spaced fingers circumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the bit upon the shank, an axially slidable rigid rod in the tubular shank and projecting therefrom at both ends and adapted to contact with the inner end of the socket for dislodging the bit from the shank, said projecting ends of said rod being provided with heads for retaining said rod in said shank, and means in the rod and shank for permitting the escape of fumes from the cooperating surfaces of the bit and the rod, said means comprising a fume conveying duct in said rod communicating from the socket "of the bit to the interior of the shank and a fume outlet duct in said shank and means on the rod for retaining it within the shank.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Description
May 18, 1937.
R. A. BEDFORD DEVICE FOR HOLDING DRILL BITS Filed Sept. 19, 1955 Jmmov REGINA LD HSLINI' BEDFORD,
Patented May 18, 1937 PATENT OFFICE DEVICE FOR HOLDING DRILL BITS Reginald Asline Bedford, Stumperlowe, Sheflield, England,
Application September 19, 1935, Serial No. 41,288
In Great Britain September 26, 1934 I 4 Claims.
My invention relates to bits of the kind used in rockdrills of the percussive type and wherein the bit is provided with a socket whereby it may be removably secured to the drill shaft.
The object of the invention is to provide a device to facilitate the forging and hardening or the like of such bits whereby the said bit may be rigidly supported during the operation and easily removed when the said operation has been 1 completed.
With these and other objects in view the invention consists in a holder for rigidly supporting drill bits of the type first above referred to during the forging, hardening or like operation and comprises a tubular shank having an end suitably formed to engage the socket of the bit and an axially disposed rigid rod capable of slidable movement in the shank and of such a length that the end thereof is adapted to project beyond that end of the shank remote from the bit when the latter is in position on the shank, whereby a blow applied to the said projecting end of the axial rod. will cause the finished bit to be ejected from its seating at the end of the shank. The end of the shank adapted to engage the bit may be tapered to engage a correspondingly tapered bore of the socket of the bit. The projecting end of the axially disposed rod may be formed with a button to define an anvil surface to prevent distortion and also to retain the rod.
Referring to the drawing filed herewith:- Fig. 1 is an elevation of one form of device; Fig. 2 is a longitudinal section of Fig. 1 showing a bit held in position; and
Fig. 3 is a similar section (part only being shown) with the bit displaced ready for removal.
Fig. 4 is a plan of Fig. 1. a, is a tubular shank which has its end b 4o tapered, in order to engage the tapered socket d of a drill bit e shown only in Figs. 2 and 3. Passing longitudinally through the bore of the shank a and. slidable therein is a rigid rod 1. The length of the rod 1 is such that both ends of the rod ,1
project beyond the shank a and are formed with enlarged heads or buttons 2' and 9', respectively, serving to retain the rod slidably in the shank within the limits of the distance apart of the two buttons 2' and j.
A collar is is sweated on the shank a, the collar having resilient claws or fingers m for tightly gripping the inner end of the bit e when seated in position, as shown in Fig. 2. These fingers effectively hold the bit from dropping off and the bit is easily removed by unseating it as shown in Fig. 3 by a blow upon the button :i to cause the rodf'toproject at the end I) of the shank thereby displacing the drill bit from its seating so that it can be removed.
The button 7' may be omitted where desired to enable the rod to be withdrawn from the shank a at any time.
When the holder is used for hardening bits by plunging them into a hardening liquid it may be desirable to provide means for permitting the escape of fumes from between the co-operating surfaces of the bit and the holder and this may be accomplished by providing a longitudinal passage n in the end of the rod adjacent the bit 6, the said passage having a lateral branch passage 15 0 communicating with the clearance space between the rod 1 and the wall of the bore of the shank a so that the fumes can pass through the said space and out through a hole p provided at any suitable point in the shank for the purpose.
The shank a intermediate of its ends may be of round, square, octagonal or other suitable cross section.
What I claim and desire to secure by Letters Patent is:-
l. A device for holding socketed drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of the bit, a collar upon said shank having spaced 30 fingers circumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the hit upon the shank, an axially slidable rigid rod disposed interiorly of the tubular shank and pro- 35 jecting through said tapered end thereof and adapted to contact with the inner end of the socket for dislodging the bit from the shank, and means in the rod and shank for permitting the escape of fumes from co-operating surfaces 40 of the socket of the bit and the rod.
2. A device for holding socketed drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of 45 the bit, a collar upon said shank having spaced fingers circumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the hit upon the shank, an axially slidable rigid rod 5 disposed interiorly of the tubular shank and projecting through said tapered end thereof and adapted to contact with the inner end of the socket for dislodging the bit from the shank, means on said rod for retaining it within said 55 shank, and means in the rod and shank for permitting the escape of fumes from co-operating surfaces of the socket of the bit and the rod.
3. A device for holding socketed drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of the bit, a collar upon said shank having spaced fingers oircumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the bit upon the shank, an axially slidable rigid rod in the tubular shank and projecting therefrom at both ends and adapted to contact with the inner end of the socket for dislodging the bit from the shank, said projecting ends of said rod being provided with heads for retaining said rod in said shank, and means in the rod and shank for permitting the escape of fumes from the co-operating surfaces of the socket of the bit and the rod.
4. A device for holding socket drill bits during hardening, forging or like operations comprising a tubular shank, a tapered end to said shank for fitting interiorly the tapered socket of the bit, a collar upon said shank having spaced fingers circumferentially around said end in spaced relation thereto for accommodating the wall of said socket so as to frictionally retain the bit upon the shank, an axially slidable rigid rod in the tubular shank and projecting therefrom at both ends and adapted to contact with the inner end of the socket for dislodging the bit from the shank, said projecting ends of said rod being provided with heads for retaining said rod in said shank, and means in the rod and shank for permitting the escape of fumes from the cooperating surfaces of the bit and the rod, said means comprising a fume conveying duct in said rod communicating from the socket "of the bit to the interior of the shank and a fume outlet duct in said shank and means on the rod for retaining it within the shank.
REGINALD ASLINE BEDFORD.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2080526X | 1934-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2080526A true US2080526A (en) | 1937-05-18 |
Family
ID=10897898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US41288A Expired - Lifetime US2080526A (en) | 1934-09-26 | 1935-09-19 | Device for holding drill bits |
Country Status (1)
Country | Link |
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US (1) | US2080526A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450621A (en) * | 1944-04-11 | 1948-10-05 | Joy Mfg Co | Forging machine |
US2480366A (en) * | 1946-01-16 | 1949-08-30 | Ivan N Hewitt | Valve stem pushing implement |
US2567563A (en) * | 1948-01-16 | 1951-09-11 | Lloyd F Hribar | Shade-roller wrench |
US3655244A (en) * | 1970-07-30 | 1972-04-11 | Int Tool Sales | Impact driven tool with replaceable cutting point |
US4355466A (en) * | 1981-02-20 | 1982-10-26 | Quiring Michael S | Punching tool having replaceable tips |
US4852672A (en) * | 1988-08-15 | 1989-08-01 | Behrens Robert N | Drill apparatus having a primary drill and a pilot drill |
-
1935
- 1935-09-19 US US41288A patent/US2080526A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450621A (en) * | 1944-04-11 | 1948-10-05 | Joy Mfg Co | Forging machine |
US2480366A (en) * | 1946-01-16 | 1949-08-30 | Ivan N Hewitt | Valve stem pushing implement |
US2567563A (en) * | 1948-01-16 | 1951-09-11 | Lloyd F Hribar | Shade-roller wrench |
US3655244A (en) * | 1970-07-30 | 1972-04-11 | Int Tool Sales | Impact driven tool with replaceable cutting point |
US4355466A (en) * | 1981-02-20 | 1982-10-26 | Quiring Michael S | Punching tool having replaceable tips |
US4852672A (en) * | 1988-08-15 | 1989-08-01 | Behrens Robert N | Drill apparatus having a primary drill and a pilot drill |
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