US1739414A - Machine for automatically cutting slate into sheets - Google Patents

Machine for automatically cutting slate into sheets Download PDF

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Publication number
US1739414A
US1739414A US115103A US11510326A US1739414A US 1739414 A US1739414 A US 1739414A US 115103 A US115103 A US 115103A US 11510326 A US11510326 A US 11510326A US 1739414 A US1739414 A US 1739414A
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US
United States
Prior art keywords
chisel
machine
slate
workpiece holder
splitting
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
US115103A
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English (en)
Inventor
Parnet Arsene
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1739414A publication Critical patent/US1739414A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
    • B28D1/322—Splitting of the working materials

Definitions

  • the invention relates to splitting slate sheets and the like by means of a knife of relatively slight thickness of blade which is moved in the splitting'direction of the object retained between resilient jaws.
  • a relatively narrow blade is suitably driven by hammer blows into the sheet-formed object intermittently moved byits periphery to the knife, so that the splitting is effected zonew-ise from the entire periphery toward the center until complete separation. Economical splitting with relatively slight cost of power is thus possible in this manner.
  • Operation is carried on particularly advantageously in that the knife blade, after each driving in movement undergoes a number of short reciprocatory movements in the direction of the plane of'the blade, in order to facilitate and accelerate thesplitting operation by repeatedly producing and removing the splitting tension.
  • Figure 1 is a view in elevation of the machine, the drive means being removed.
  • Figure 2 is a view in plan of the complete machine. 1 I
  • Figure3 is a section ontheline III-III of Figure 2.
  • Figure 1 is a section on the line IV-IV of Figure 2.
  • Fig. 4 is a section taken along the line Iv -JV of Fig. 4.
  • the workpiece 1 is held at'the end of a shaft 2 between a plate 3 keyed to the shaft 2 and a second plate 4 adjusted to move in the direction of the shaft, and a spring 5 presses against the plate 3.
  • the purpose of these plates is to hold the workpiece and to present it in front of the splitting chisel in such a manner thattheplane ofcleavage of the workpiece is parallel to the plane of the chisel.
  • a second shaft 9 is mounted on columns secured to the framework of the machine.
  • This shaft 9 carries near one of its ends a cam 10 the object of whichis to raise the hammer 11 adapted to facilitate the sinking of the chisel into the workpiece.
  • the chisel 12 ismounted at one end of a slide 13 sliding within the guide 14. The other end of the slide 13 is prolonged by a rod 15 on the end of which the hammer 11 strikes each time that the shaft 9 makes a complete revolution.
  • a second cam 16 secured to the shaft 9 acts periodically through the mediumof a pusher 17 upon the upper end of a lever 18 oscillating about anaxis 19.
  • the cam 16 as shown on Figure 3 has an irregular part between the lobes a and a which is intended to permit the disengagement of the chisel from the slatelwhen the latter has been completely split. Itis noted that in the illustrated embodiment the cam has seven lobes. This is intended to work a slate of determined fissility which necessitates the use of seven blows to split the slate completely. In the case of a slate of irregular fissility the cam carries only asingle lobe and the shaft is rotated until the slate is completely split.
  • the lever 18 may be adjusted relatively to the cam 16 by means of the screw 29. The lower end of the lever 18 engages a sleeve 21 which" can slide at right angles to the shaft 9.
  • this sleeve 21 may freely slide a rod 22 terminating by a pusher 23guided in its movement by a guide 24.
  • a spring 25 bears at one end upon the sleeve 21 and at the other endagainst the pusher 23holding the end of the latter against a beam 26 oscillating about the point 27.
  • One end of the beam 26 engages through a slot 28 with a barrel 28 which can turn in the interior of the slide 13.
  • a slot 26' in said guide gives access to the end of said beam, for lubrication and dismantling purposes of the chisel by pushing against the roller 31 secured to the beam.
  • a rod 32 is connected to the rear end of the beam 26 by a double actuation havingthe pivots c and (5 arranged perpendicularly so as to permit universal movement between the with a ratchet wheel 40, which is'keye'd on.
  • Shaft 79 is driven or entrained by means of crank 41 throughreducing gears 42.
  • cam 16 exerts successive thrusts on pusher 23, through the pusher 17 and lever 18. These thrusts cause the chisel 12 to penetrate into the interior of the object 1.
  • cam 30, on slidin on roller 31 attached to the end of beam 26 causes the successive withdrawals of the chisel in the object.
  • the assembled apparatus has the effect of exerting on the chisel an. appreciable thrust which is regulated by regulating lever 18.
  • a machine for splitting slate comprising a rotary workpiece holder and a reciprocating chisel, said workpiece holder being adapted to hold. the slate with its plane of cleavage parallel to the direction of movement of said chisel, means for reciprocating said chisel, a hammer actuated by said reciprocating means for periodically imparting an inserting blow to said chisel, and means for withdrawing said chisel after the imparting of said series of blows.
  • a machine for splitting slate as claimed in claim 2 including a resilient cushion between elements of said chisel reciprocating means to compensate for variations in the length of the chisel stroke due to differences in its extent of penetration.
  • a machine for splitting slate comprising a rotary workpiece holder and a reciprocat-ing chisel, said workpiece holder being adapted to hold the slate with its plane of cleavage parallel to the direction of movement of said chisel, means for reciprocating said chisel, and a hammer for periodically imparting an impact blow to said chisel.
  • a machine for splitting slate comprising a rotary workpiece holder and a reciprocatory chisel, and means for advancing the rotary workpiece holder by angular steps proportional tothe length of stroke of said chisel, the length of the stroke being adjustable according to the ease of penetration of the material acted upon.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US115103A 1925-06-10 1926-06-10 Machine for automatically cutting slate into sheets Expired - Lifetime US1739414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR599314T 1925-06-10

Publications (1)

Publication Number Publication Date
US1739414A true US1739414A (en) 1929-12-10

Family

ID=8969497

Family Applications (1)

Application Number Title Priority Date Filing Date
US115103A Expired - Lifetime US1739414A (en) 1925-06-10 1926-06-10 Machine for automatically cutting slate into sheets

Country Status (5)

Country Link
US (1) US1739414A (enrdf_load_stackoverflow)
BE (1) BE335064A (enrdf_load_stackoverflow)
DE (1) DE452979C (enrdf_load_stackoverflow)
FR (1) FR599314A (enrdf_load_stackoverflow)
GB (1) GB253533A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR599314A (fr) 1926-01-09
GB253533A (en) 1926-12-23
DE452979C (de) 1927-11-26
BE335064A (enrdf_load_stackoverflow) 1926-07-31

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