US2156732A - Endless chain cutting machine for use in mining coal and other minerals - Google Patents

Endless chain cutting machine for use in mining coal and other minerals Download PDF

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Publication number
US2156732A
US2156732A US194455A US19445538A US2156732A US 2156732 A US2156732 A US 2156732A US 194455 A US194455 A US 194455A US 19445538 A US19445538 A US 19445538A US 2156732 A US2156732 A US 2156732A
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US
United States
Prior art keywords
jib
liner
chain
guide
channel
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
Application number
US194455A
Other languages
English (en)
Inventor
Lewis Oswald Floyd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Newton Chambers and Co Ltd
Original Assignee
Newton Chambers and Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Newton Chambers and Co Ltd filed Critical Newton Chambers and Co Ltd
Application granted granted Critical
Publication of US2156732A publication Critical patent/US2156732A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar
    • B27B17/025—Composite guide bars, e.g. laminated, multisectioned; Guide bars of diverse material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/22—Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
    • E21C25/28—Chains or chain guides
    • E21C25/30—Chain guides
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49879—Spaced wall tube or receptacle

Definitions

  • This invention relates to endless-chain cutting machines such as are used for excavating coal and other minerals.
  • the object of the present invention is to provide an arrangement which will avoid the delay and inconvenience involved in removing and replacing the worn parts of the jib and which will also enable the cutting chain to be properly guided and supported and thus avoid the usual slackness and play between the chain and its guide so that the machine can be made more efficient.
  • the jibor guide in which the cutting chain runs is provided with a readily renewable liner.
  • This liner can be made in one or more pieces and can be shaped so as to cover all the surfaces of the jib guide which are subjected to wear.
  • the liner is preferably secured in place by light welds or tack welds along the outer edges of the jib plates so that the liner can be readily removed when required by chipping away the securing welds.
  • the parts can be secured together and to the jib frame by a weld or welds at the bottom of the jib guide or, in cases where the cutting chain is retained in the jib guide by an internal retaining member secured by bolts or studs to the jib frame, the member can be utilized for holding the liner in place at the bottom of the jib guide.
  • the jib guide into which the liner is fitted can also be built up from plates welded together and machined to receive the liner.
  • Fig. l is a section through a jib guide and liner and showing a pick block of the cutter chain in position in the guide.
  • Fig. 2 is a section through a built up jib guide before the jib is machined and the liner is fitted.
  • Fig. 3 is a sectional View similar to Fig. 2 and showing a modified liner structure.
  • Figs. 4 and 5 are similar fragmentary sections through a jib guide to show modified forms of liners.
  • the jib has two side members I and a cross member 2 which forms the bottom of the jib guide while the projecting portions of the side member I form the sides of the guide.
  • the inside of the jib guide is machined on its inside faces to take a renewable liner 3 having a bottom portion 6 and side portions 5.
  • the saddle 6 of a pick box forming part of the cutter chain and the sides of the liner are turned over or flanged as at I to form bearing surfaces beneath the pick block 8 on the top of the saddle Ii.
  • the pick boxes are retained in the jib guide by a retaining member 9 secured by a bolt II] to the bottom 2 of the guide and the retaining member 9 is.
  • the liner 3 can be divided along the centre line of the jib or it may be in one piece transversely with clearance holes formed therein for the bolts lit.
  • the outer edges of the liner are secured by light welds or tack welds II either along the outer corners of the sides I .of the guide and the flanges l as on the left of Fig. 1 or in the spaces between bevels I2 on the sides I and the undersides of the flanged parts I of the liner as on the right of Fig. 1.
  • Fig. 2 shows how the jib can be built up from side plates 2
  • Fig. 3 shows a built-up jib guidesimilar to that of Fig. 2 with a liner made in one piece transversely but only having a bottom portion 24 and sides 25 and not flanged over the edges of the side plates 2
  • the liner is secured in place by light welds I5 filling the spaces between bevels IE on the inside edges of the side plates 2
  • Figs. 4 and 5 show two forms of liners built up from parts.
  • a liner can be constructed in two halves transversely, one half being as shown in Fig. 4 with a side flanged over at 1 and with a half-bottom 4 and held in place by a bottom weld 18 between the two halves 4 and welds ll similar to the corresponding weld on the right of Fig. 1.
  • the liner may have each half constructed as shown in Fig.
  • the liners are made of specially hard or tough steel and can be made in convenient lengths or longitudinal sections to suit convenience in manufacture and fitting to the jib and the joints between the longitudinal sections can be suitably positioned welds.
  • the liner can be readily removed when required by chipping away the holding welds and the liner can be easily replaced by a new liner or a thicker liner to take up wear on the outside of the cutter chain.
  • the wearing faces of the liner can be machined so that the chain can be made a much more accurate fit in the guide than is usually the case and this in itself greatly reduces excessive wear as there need be no looseness or slackness to permit twisting or tilting of the chain in its guide.
  • a jib for carrying the cutter chain a guide channel for the chain in said jib, said channel being wider and deeper than necessary to receive the chain, and lining means covering the entire bottom and sides of said channel to bring it to the required dimensions to fit the chain and said lining means being welded to the edges of the jib.
  • jib carrying the cutter chain, a guide channel in said jib in which the chain runs, and lining means inserted between the chain and the coacting surfaces of the guide channel and covering the entire bottom, sides and edges of the Walls of said channel and said lining means being welded to the jib by light welds.
  • a jib carrying the cutter chain, a guide channel in said jib in which the chain runs, retaining means secured to the bottom of said channel for holding the chain in the channel, and a lining member covering the bottom and sides of said channel and secured in the channel by said retaining means and by light welds at the edges of the channel sides.
  • a jib for carrying the cutter chain a guide channel for the chain in said jib, a lining member covering one half of the bottom sufaceand one side surface of the channel and flanged over one edge of said jib, a second lining member covering the other half of the bottom surface and the other side surface of the channel and flanged over the other edge of said jib, welding securing the flanges of said lining members to the edges of the jib, and means for securing the lining members to the bottom of said channel.
  • a jib formed from spaced side plates and transverse members secured between said side plates at a distance from the edges of said plates to form therewith a guide channel along the edge of the jib, lining means covering said side plates and transverse members at their surfaces which from the entire inside surface of said channel and said lining means being flanged over the edges of said side plates, and means for securing said lining means to said jib.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
US194455A 1937-03-30 1938-03-07 Endless chain cutting machine for use in mining coal and other minerals Expired - Lifetime US2156732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9035/37A GB483351A (en) 1937-03-30 1937-03-30 Improvements in or relating to endless-chain cutting machines for use in mining coaland other minerals

Publications (1)

Publication Number Publication Date
US2156732A true US2156732A (en) 1939-05-02

Family

ID=9864134

Family Applications (1)

Application Number Title Priority Date Filing Date
US194455A Expired - Lifetime US2156732A (en) 1937-03-30 1938-03-07 Endless chain cutting machine for use in mining coal and other minerals

Country Status (4)

Country Link
US (1) US2156732A (enrdf_load_stackoverflow)
BE (1) BE427041A (enrdf_load_stackoverflow)
FR (1) FR835157A (enrdf_load_stackoverflow)
GB (1) GB483351A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435891A (en) * 1941-06-24 1948-02-10 American Viscose Corp Method and apparatus for crimping textile fibrous material
US2561657A (en) * 1948-05-12 1951-07-24 Frank L Fulke Mining machine
US2653808A (en) * 1947-12-16 1953-09-29 Joy Mfg Co Cutter chain
US3856358A (en) * 1973-04-27 1974-12-24 Cincinnati Mine Machinery Co Wear-resistant inserts for in surfaces of the links of cutter chains and the like to retard wear thereof
US3910709A (en) * 1974-02-01 1975-10-07 Cincinnati Mine Machinery Co Joint assembly for disconnecting a segmented cutter bar
EP0663273A1 (en) * 1993-12-15 1995-07-19 Sandvik Windsor Corporation Low friction guide bar

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435891A (en) * 1941-06-24 1948-02-10 American Viscose Corp Method and apparatus for crimping textile fibrous material
US2653808A (en) * 1947-12-16 1953-09-29 Joy Mfg Co Cutter chain
US2561657A (en) * 1948-05-12 1951-07-24 Frank L Fulke Mining machine
US3856358A (en) * 1973-04-27 1974-12-24 Cincinnati Mine Machinery Co Wear-resistant inserts for in surfaces of the links of cutter chains and the like to retard wear thereof
US3910709A (en) * 1974-02-01 1975-10-07 Cincinnati Mine Machinery Co Joint assembly for disconnecting a segmented cutter bar
EP0663273A1 (en) * 1993-12-15 1995-07-19 Sandvik Windsor Corporation Low friction guide bar

Also Published As

Publication number Publication date
BE427041A (enrdf_load_stackoverflow)
FR835157A (fr) 1938-12-14
GB483351A (en) 1938-04-19

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