US3656326A - Leather-smoothing machine - Google Patents

Leather-smoothing machine Download PDF

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Publication number
US3656326A
US3656326A US61279A US3656326DA US3656326A US 3656326 A US3656326 A US 3656326A US 61279 A US61279 A US 61279A US 3656326D A US3656326D A US 3656326DA US 3656326 A US3656326 A US 3656326A
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US
United States
Prior art keywords
bladder
frame
leather
combination
tool
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
US61279A
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English (en)
Inventor
Yves Grenier
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.)
Individual
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Individual
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Filing date
Publication date
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Publication of US3656326A publication Critical patent/US3656326A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/14—Processes or apparatus for setting-out, smoothing, ironing or polishing leather or hides

Definitions

  • the machine for smoothing leather comprises a frame which 1 pp m on y a supports a table for the reception of the leather to be Sept 5, 1969 France "6930293 smoothed and an oscillating arm articulated on levers and the free end of which carries a glass smoothing cylinder which "69/46 describes a reciprocating movement against the table while f- 1/36 the said arm oscillates under the action of a motor drive, in [58] Field Of Search "69/46 which the g i table is mounted on the frame through the i termediary of guide means which compel the table to move [56] References cued parallel with itself in a direction perpendicular to its own UNn-ED STATES PATENTS plane, while an inflatable bladder is interposed between the 52 728 2/1866 Martin 69/46 x table and a support fast with the frame.
  • the invention relates to leather-smoothing machines of the type comprising a frame which supports a table for the reception of the leather to be smoothed and an oscillating arm articulated on levers and the free end of which carries a glass smoothing cylinder which describes a reciprocating movement against the table while the arm oscillates under the action of a motor drive.
  • the aim of the invention is to realize a leather-smoothing machine of the type in question which does not possess the above-mentioned drawbacks of the conventional machines.
  • the table is mounted on the frame through the intermediary of guide means which compel it .to move parallel with itself in a direction perpendicular to its own plane, while an inflatable bladder is interposed between the said table and a support fast with the frame.
  • guide means which compel it .to move parallel with itself in a direction perpendicular to its own plane
  • an inflatable bladder is interposed between the said table and a support fast with the frame.
  • the glass cylinder may not suddenly attach the leather, it is appropriate that it should form an angle of several degrees with the plane surface of the table.
  • the glass cylinder. is fixed in a gripper mounted on the arm so as to be orientable about a longitudinal axis parallel with the surface of the table.
  • FIG. 1 is a profile view of the whole of the machine
  • FIG. 2 is a corresponding front view
  • F IG.; 3 is a partial section, on a larger scale, along the line III-III in FIG. 1,
  • FIG. 4 is a partial section along the line IV-IV in FIG. 1,
  • FIG. 5 shows a detail of FIG. 1 on a larger scale
  • F IG. 6 is a front view corresponding to FIG. 5.
  • the leather-smoothing machine represented as a whole in FIGS. 1 and 2 is constituted essentially by a frame 1 which supports a table 2 for the reception of the leathers to be smoothed,,also an oscillating arm 3 articulated through levers 4 and 5 on the frame 1 and the free end of which carries, through the intermediary of a head 7, a glass cylinder 8 in tended to smooth the leather placed on the table 2, while the arm3oscillates under the action of an electric motor 11 through the intermediary of a belt: transmission 12, a disk crank 13 journaled in bearings 14, and a connecting rod 15.
  • the frame 1 comprises two side members 1A, 18 between which the arm 3 can pass, the lever 4 being likewise double to permit the passage of this arm when it advances into the frame in the direction of the arrow f.
  • the positioning of the table 2 in upward direction is effected, at each of its ends, by two screws 35 which are mounted in bosses 36 welded on a plate 37 fixed to the side members 22 and 23 of the table by screws 38.
  • the screws 35 are adapted to slide freely in holes 41 provided in the plate 31. By screwing the screws 35 more or less deeply intothe bosses 36 one limits the possible upward travel of the table by the coming of the heads of the said screws 35 into contact with the lower face of the plate 31.
  • the screws 35 are immobilized by means of lock nuts 42.
  • a tubular bladder 44 intended to serve as elastic means for application of the table against the glass cylinder 8.
  • This bladder is of natural or synthetic rubber or of an appropriate elastomer.
  • the table 2 is thrust downwards not only by its own weight, but also, at each of its ends, by the action of two return springs 48 one end of which is attached to a stud 51 fast with the corresponding side member of the table and the other end to another stud 52 fast with the plate 31.
  • the bladder 44 which is closed at its two ends, is equipped with a valve 56 connected by a conduit 57 to a three-way valve 58 which in this example is controlled by means of a pedal 59.
  • the valve 58 is intended to connect the bladder, according to choice, to discharge to atmosphere or with a compressed air conduit 61 through the intermediary of a first expander 62 which drops the pressure, for example, from 10 to 2 kg/sq.cm., then of a safety valve 63, and finally of a second expander 65 which permits of precise regulation of the air pressure admitted finally to the bladder 44, for example, from O to 2 kg/sq.cm.
  • the glass cylinder 8 is fixed in a gripper designated as a whole by 71 (see especially FIGS. 5 and 6) and comprising a jaw 72 called fixed jaw and a jaw 73 called movable jaw.
  • the movable jaw 73 is fixed on the jaw 72 by means of two bolts 75.
  • the fixed jaw 72 is fixed on a front plate 76 of the head 7 by a bolt 77 parallel with the table and serving at the same time as pivot spindle for the gripper on the head 7.
  • the upper end of the body of the fixed jaw 72 is in the form of an arc of a circle coaxial with the pivot bolt 77 and is engaged in a groove 81 of corresponding form formed in a piece fast with the head 7, which is itself formed essentially of two side members 7A and 7B.
  • the inclination of the gripper in relation to the head can be regulated precisely by means of a mechanism comprising a tapped socket 84 fixed on the front face of the upper part of the body of the fixed jaw 72 and in which there is engaged a screw 85 supported by its ends in two lugs 87 fast with the head 7.
  • the angle of inclination which one can have to impart to the gripper is very small, and there is sufficient play between the ends of the screw 85 and the lugs 87 in which it is mounted to permit this movement.
  • the top of the table 2 is covered with a leather lining 91. Moreover this table is surrounded by a framing shelf 93 (FIG. 4), for example of wood, fixed to the sole-piece 26 by means of angle pieces 96, 97 and bolts 98, 101. The bolts 98 pass through vertical slots 99 of the angle pieces 97 to permit an adjustment of height of the shelf 93.
  • a framing shelf 93 for example of wood
  • the bladder is inflated to the desired pressure and the position of the table in relation to the glass cylinder is regulated precisely, especially its parallel position in the direction of its length, by means of the screws 35.
  • the motor 11 is started up the glass cylinder 8, driven by the mechanism carrying it, moves with a reciprocating motion over the top of the table 2.
  • the pedal To cause the table to descend it is sufficient, by means of the pedal, to drop the pressure in the bladder, and the table redescends under the action of its own weight and that of its return springs 48.
  • a leather-dressing machine having a frame, a planar elongated table, guide means supported by said frame for guiding said table to move parallel with itself in a direction at right angles to the plane of said table, a leather-dressing tool formed of a cylinder transverse to the longitudinal direction of said table and a tool-gripper carrying said tool, a lever system articulated on said frame and carrying said gripper for movement of said tool against said table in the longitudinal direction of said table, and motor means for actuating said lever system; the combination of an elongated fixed support fast with said frame and extending under said table throughout the length thereof, and an inflatable elongated bladder interposed between said table and said support and extending the length of said table.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
US61279A 1969-09-05 1970-08-05 Leather-smoothing machine Expired - Lifetime US3656326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6930293A FR2063235A5 (it) 1969-09-05 1969-09-05

Publications (1)

Publication Number Publication Date
US3656326A true US3656326A (en) 1972-04-18

Family

ID=9039753

Family Applications (1)

Application Number Title Priority Date Filing Date
US61279A Expired - Lifetime US3656326A (en) 1969-09-05 1970-08-05 Leather-smoothing machine

Country Status (6)

Country Link
US (1) US3656326A (it)
BE (1) BE753868A (it)
CH (1) CH513242A (it)
DE (1) DE1963547A1 (it)
FR (1) FR2063235A5 (it)
GB (1) GB1275690A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246816A1 (de) * 1981-12-22 1983-06-30 Vincenza Turbigo Milano Bonali Verfahren zur oberflaechenbearbeitung von flachmaterialien, insbesondere von haeuten, und maschine zur durchfuehrung des verfahrens

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111534647B (zh) * 2020-05-11 2021-09-03 吴丽君 一种二胡制作时皮革批量打磨机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9292A (en) * 1852-09-28 poole
US52728A (en) * 1866-02-20 Improved machine for rolling leather
US599928A (en) * 1898-03-01 Leather-dressing machine
US929772A (en) * 1908-04-08 1909-08-03 Woburn Machine Company Work-support for leather-working machines.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9292A (en) * 1852-09-28 poole
US52728A (en) * 1866-02-20 Improved machine for rolling leather
US599928A (en) * 1898-03-01 Leather-dressing machine
US929772A (en) * 1908-04-08 1909-08-03 Woburn Machine Company Work-support for leather-working machines.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246816A1 (de) * 1981-12-22 1983-06-30 Vincenza Turbigo Milano Bonali Verfahren zur oberflaechenbearbeitung von flachmaterialien, insbesondere von haeuten, und maschine zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
FR2063235A5 (it) 1971-07-09
GB1275690A (en) 1972-05-24
BE753868A (fr) 1970-12-31
CH513242A (fr) 1971-09-30
DE1963547A1 (de) 1971-04-08

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