US2458946A - Bit holder for coal-cutting chains - Google Patents
Bit holder for coal-cutting chains Download PDFInfo
- Publication number
- US2458946A US2458946A US613110A US61311045A US2458946A US 2458946 A US2458946 A US 2458946A US 613110 A US613110 A US 613110A US 61311045 A US61311045 A US 61311045A US 2458946 A US2458946 A US 2458946A
- Authority
- US
- United States
- Prior art keywords
- bit
- lugs
- coal
- recess
- bit holder
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/19—Means for fixing picks or holders
-
- 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
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2222—Tool adjustable relative to holder
- Y10T407/2244—Tool adjustable relative to holder by movement of seat relative to holder
- Y10T407/2246—Pivoted seat
-
- 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
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2222—Tool adjustable relative to holder
- Y10T407/225—Resiliently biased tool clamping jaw
-
- 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
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
Definitions
- a further object of this invention is to provide means whereby a bit may be very rapidly inverted or renewed in the holder.
- Another object of this invention is to provide means in a bit holder for maintaining the holder lugs against movement in reversal of the coal cutting chain.
- Figure 1 is a plan view of a chain link embracing my invention
- Figure 2 is a sectional elevational view thereof
- Figure 3 is a sectional view taken on line 3-3 of Figure 2
- Figure 4 is a perspective View of a pair of bit holding lugs shown separated
- FIG. 5 is a fragmentary elevational view of a coal cutting chain.
- I0 indicates my in-v vention which comprises a chain link II-, having an upstanding portion I2, provided with an arcu- 30 ately formed pocket I3, in which is seated a pair of similarly formed lugs I4 and I5, the lower ends I6 and I1, of which are provided with disconnectible hinge members I8 and I9.
- lug I5 In the central upper portion 20, of lug I5, is provided a half-diamond shaped recess 2I, in which is seated the lower portion 22, of a diamond-shaped cutter 23, which is removably held in the recess 2I, by the overhanging portion 24, of the lug I5, said overhanging portion being provided with a slot 25, into which the portion 26, of the cutter 22, is adapted to project when the members I4, I5 and 22, are in operative position, the point 2l, of the cutter projecting outwardly of the member I2, to cooperate with other cutters 22, 28, 29, etc., of the chain 30.
- the arcuate wall 3I, of the member I5 is provided with a series of ratchet teeth 32, into which the dog 33, pressed by a spring 34, is adapted to seat in order to hold the member I5, in rearward position when it is desired to remove or change the position of the said cutter, either end of which may be projected for cutting operations.
- 'I'he stem 35 (shown dotted), has pivoted thereto a cam 36, with a lever handle 31, for operation 'forthe removal o'fithe members Wand lyfrom lthe said reces pockety I3.l Thellinks" II, H",
- a chain link having an outwardly projecting block provided with a substantially cylindrical recess, a pair of lugs which combined have their surfaces conforming to the walls of the said recess and adapted to hold a bit, one of the lugs provided with a pocket shaped to conform to the contour of a substantial portion of the bit, said lugs having slip hinge connections at their lower ends, the other lug having a protruding upper edge provided with a socket into which an edge of the bit is adapted to proj-ect and whereby the said bit is locked within its seat, means whereby the lugs may be held against movement, a ratchet formed on the outer wall of one of the lugs and a spring controlled dog adapted to engage the ratchet teeth and forming said locking means, and means for holding the dog from engagement with the ratchetteeth.
- a chain link havingan outwardly projecting block provided with a substantially cylindrical recess, a pair of lugs which combined have their surfaces conforming to the walls of the said recess and adapted to hold a bit, one of the lugs provided with a pocket shaped to conform to the contour of a substantial portion of the bit, said lugs having slip hinge connections at their lower ends, the other lug having a protruding upper edge provided with a socket into which an edge of the bit is adapted to project and whereby the said bit is locked within its seat, means whereby the lugs may be held against movement, and a ratchet formed on the outer wall of one of the lugs and a spring controlled dog adapt-ed to engage the ratchet teeth and forming said locking means 3.
- a chain link having an outwardly project- 4 ing block provided with a substantially cylindrithe other lug having a protruding upper edge cal recess forming camming surfaces, a pair of provided with a socket into vvhich an edge of the lugs which combined have their surfaces conbit is adapted to project for locking the bit within forming to the walls of said recess for camming its seat, an arcuate cam rack on the lug formed action to hold a bit, one of the lugs provided 5 with the bit-receiving pocket, and a cam rewith a pocket shaped to conform to the contour tractable spring-projected detent supported by of a, substantial portion of the bit, said lugs said block and engageable with said cam rack having slip hinge connections at their lower ends, for preventing the removal of said lugs from the the other lug xhaving a protruninizim edge mcylindrical recess in said block.
- a chain link having an outwami'lyfpr'ojectfI 1115 Y ing block provided with asubstantiallycylin- UNITED STATES PATENTS drical recess formed with camming surfaces, a Number Name Date pair of lugs which combined have theinzsuraces f-::989;674 Weiss Apr. 13, 1911 comforming to the Walls of said recess and 1,677,950 Bowman" ⁇ July 24, 1928 '.adaptedto huida-bit, one-Ofi thermes, provided 2o m5191804 f1. stenger etai.v Mar.
Description
Jan. 11, 1949.
E. F. JOHNSTON` BIT HOLDER FOR "COAL CUTTING HAJNS F1144 Aug. 28, 1945 Patented Jan. 11, 1949 UNIT-ED sfr-A11*i375.
2,45s,lc" n z BIT HoLDEa'FoR COAL'JTINQ f "Edwin Ff-Johnston,Eaningtoiisirysf, Application August 28, 'rszrill My invention relates to improvementsinfcoalm vcutting chains and has for its obiect tot'prov'ide a bit holder so formed as to permit rapid release for a cutter bit.
A further object of this invention is to provide means whereby a bit may be very rapidly inverted or renewed in the holder.
Another object of this invention is to provide means in a bit holder for maintaining the holder lugs against movement in reversal of the coal cutting chain.
Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings in which:
Figure 1 is a plan view of a chain link embracing my invention,
Figure 2 is a sectional elevational view thereof,
Figure 3 is a sectional view taken on line 3-3 of Figure 2,
Figure 4 is a perspective View of a pair of bit holding lugs shown separated, and
Figure 5 is a fragmentary elevational view of a coal cutting chain. In the accompanying drawings as above enumerated and in the following specication, like characters of reference indicate like parts throughout and in which I0, indicates my in-v vention which comprises a chain link II-, having an upstanding portion I2, provided with an arcu- 30 ately formed pocket I3, in which is seated a pair of similarly formed lugs I4 and I5, the lower ends I6 and I1, of which are provided with disconnectible hinge members I8 and I9. In the central upper portion 20, of lug I5, is provided a half-diamond shaped recess 2I, in which is seated the lower portion 22, of a diamond-shaped cutter 23, which is removably held in the recess 2I, by the overhanging portion 24, of the lug I5, said overhanging portion being provided with a slot 25, into which the portion 26, of the cutter 22, is adapted to project when the members I4, I5 and 22, are in operative position, the point 2l, of the cutter projecting outwardly of the member I2, to cooperate with other cutters 22, 28, 29, etc., of the chain 30. The arcuate wall 3I, of the member I5, is provided with a series of ratchet teeth 32, into which the dog 33, pressed by a spring 34, is adapted to seat in order to hold the member I5, in rearward position when it is desired to remove or change the position of the said cutter, either end of which may be projected for cutting operations. 'I'he stem 35 (shown dotted), has pivoted thereto a cam 36, with a lever handle 31, for operation 'forthe removal o'fithe members Wand lyfrom lthe said reces pockety I3.l Thellinks" II, H",
etes areprovlffwithftheusuai bores as anzi-sa,
whereby said links may be connected in the usual manner.
It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.
Changes in. shape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice, if desired.
Having now described my invention that which I claim as new and desire to procure by Letters Patent is:
1. A chain link having an outwardly projecting block provided with a substantially cylindrical recess, a pair of lugs which combined have their surfaces conforming to the walls of the said recess and adapted to hold a bit, one of the lugs provided with a pocket shaped to conform to the contour of a substantial portion of the bit, said lugs having slip hinge connections at their lower ends, the other lug having a protruding upper edge provided with a socket into which an edge of the bit is adapted to proj-ect and whereby the said bit is locked within its seat, means whereby the lugs may be held against movement, a ratchet formed on the outer wall of one of the lugs and a spring controlled dog adapted to engage the ratchet teeth and forming said locking means, and means for holding the dog from engagement with the ratchetteeth.
2. A chain link havingan outwardly projecting block provided with a substantially cylindrical recess, a pair of lugs which combined have their surfaces conforming to the walls of the said recess and adapted to hold a bit, one of the lugs provided with a pocket shaped to conform to the contour of a substantial portion of the bit, said lugs having slip hinge connections at their lower ends, the other lug having a protruding upper edge provided with a socket into which an edge of the bit is adapted to project and whereby the said bit is locked within its seat, means whereby the lugs may be held against movement, and a ratchet formed on the outer wall of one of the lugs and a spring controlled dog adapt-ed to engage the ratchet teeth and forming said locking means 3. A chain link having an outwardly project- 4 ing block provided with a substantially cylindrithe other lug having a protruding upper edge cal recess forming camming surfaces, a pair of provided with a socket into vvhich an edge of the lugs which combined have their surfaces conbit is adapted to project for locking the bit within forming to the walls of said recess for camming its seat, an arcuate cam rack on the lug formed action to hold a bit, one of the lugs provided 5 with the bit-receiving pocket, and a cam rewith a pocket shaped to conform to the contour tractable spring-projected detent supported by of a, substantial portion of the bit, said lugs said block and engageable with said cam rack having slip hinge connections at their lower ends, for preventing the removal of said lugs from the the other lug xhaving a protruningruppem edge mcylindrical recess in said block. provided-with asocketfinto Whichan-edgefof the 10 'EDWIN F. JOHNSTON. bit is adapted to project and whereby the said bit is locked Within its seat, and resiliently tensioned REFERENCES CITED means for preventing thefremoval ofisadlugs i',Thefollowing-.references are of record in the from the cylindrical recess in said'block. me of this ptent:
4. A chain link having an outwami'lyfpr'ojectfI 1115 Y ing block provided with asubstantiallycylin- UNITED STATES PATENTS drical recess formed with camming surfaces, a Number Name Date pair of lugs which combined have theinzsuraces f-::989;674 Weiss Apr. 13, 1911 comforming to the Walls of said recess and 1,677,950 Bowman"` July 24, 1928 '.adaptedto huida-bit, one-Ofi thermes, provided 2o m5191804 f1. stenger etai.v Mar. 10, 1931 rwith aepockenshapedzto conform-.to-,thecontour 2,036,327 ,f-Eulke Apn v7, 1936 ofv a isubstantial portionsl-of the-bitf said Mlugs having slip hingeconnections. attheiriower ends,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US613110A US2458946A (en) | 1945-08-28 | 1945-08-28 | Bit holder for coal-cutting chains |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US613110A US2458946A (en) | 1945-08-28 | 1945-08-28 | Bit holder for coal-cutting chains |
Publications (1)
Publication Number | Publication Date |
---|---|
US2458946A true US2458946A (en) | 1949-01-11 |
Family
ID=24455897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US613110A Expired - Lifetime US2458946A (en) | 1945-08-28 | 1945-08-28 | Bit holder for coal-cutting chains |
Country Status (1)
Country | Link |
---|---|
US (1) | US2458946A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2962800A (en) * | 1956-06-12 | 1960-12-06 | Henry F Swenson | Adjustable cutter rake tool |
US2972802A (en) * | 1957-10-10 | 1961-02-28 | William B Stein | Milling cutter with adjustable radial rake |
US3079671A (en) * | 1958-10-30 | 1963-03-05 | O K Tool Co Inc | Adjustable bit holding means |
US3180006A (en) * | 1959-08-13 | 1965-04-27 | U S Tool And Cutter Company | Grooving tool |
US4609227A (en) * | 1982-11-13 | 1986-09-02 | Ruhrkohle Ag | Cutting-tool mounting for rotary excavating head |
WO2000052303A1 (en) * | 1999-02-27 | 2000-09-08 | Wirtgen Gmbh Maschinenbau | Chisel holder changing system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US989674A (en) * | 1908-10-08 | 1911-04-18 | Louis T Weiss | Tool-holder and tool-post. |
US1677950A (en) * | 1926-08-21 | 1928-07-24 | Newton K Bowman | Bit |
US1795804A (en) * | 1930-04-15 | 1931-03-10 | Cincinnati Mine Machinery Co | Mining-machine bit and bit holder |
US2036327A (en) * | 1930-05-22 | 1936-04-07 | Jeffrey Mfg Co | Mining chain cutting bit |
-
1945
- 1945-08-28 US US613110A patent/US2458946A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US989674A (en) * | 1908-10-08 | 1911-04-18 | Louis T Weiss | Tool-holder and tool-post. |
US1677950A (en) * | 1926-08-21 | 1928-07-24 | Newton K Bowman | Bit |
US1795804A (en) * | 1930-04-15 | 1931-03-10 | Cincinnati Mine Machinery Co | Mining-machine bit and bit holder |
US2036327A (en) * | 1930-05-22 | 1936-04-07 | Jeffrey Mfg Co | Mining chain cutting bit |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2962800A (en) * | 1956-06-12 | 1960-12-06 | Henry F Swenson | Adjustable cutter rake tool |
US2972802A (en) * | 1957-10-10 | 1961-02-28 | William B Stein | Milling cutter with adjustable radial rake |
US3079671A (en) * | 1958-10-30 | 1963-03-05 | O K Tool Co Inc | Adjustable bit holding means |
US3180006A (en) * | 1959-08-13 | 1965-04-27 | U S Tool And Cutter Company | Grooving tool |
US4609227A (en) * | 1982-11-13 | 1986-09-02 | Ruhrkohle Ag | Cutting-tool mounting for rotary excavating head |
WO2000052303A1 (en) * | 1999-02-27 | 2000-09-08 | Wirtgen Gmbh Maschinenbau | Chisel holder changing system |
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