序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
21 Method and apparatus for tanning leather US44494030 1930-04-17 US1893706A 1933-01-10 CHARLES KANNEL
22 Extractor US42167630 1930-01-18 US1824424A 1931-09-22 WALTER BUSS
23 Leather working machine US29353228 1928-07-18 US1815140A 1931-07-21 CONNOR JOHN H
24 Device for wringing wet leather US50305621 1921-09-24 US1496808A 1924-06-10 HULBERT EDWIN F
25 glasel US1414404D US1414404A 1922-05-02
26 Tanning apparatus US29190819 1919-04-22 US1364379A 1921-01-04 JONES ADRIAN S
27 Systems for opening and closing access apertures in the outer walls of tannery paddle tumbles and the like US3788004D 1972-02-28 US3788004A 1974-01-29 BILLERI T; BILLERI F
The invention provides systems for opening and closing access apertures in the outer walls of tannery paddle tumblers and the like. The system consists of a door which is slid in guides, the movement of the door being controlled by a fluid motor and fluid control. The movement of the door is effected by the fluid motor which moves a rack attached to the door. Means for providing a seal between the door and the access aperture are also described.
28 Fiberglass processing tank US3664161D 1970-10-06 US3664161A 1972-05-23 CRESSMAN FRED D
A molded resin-bonded fiberglass processing tank having a hub structure formed integrally with the end wall. The hub structure is made up of a laminated core overlayed with a fiberglass laminate. A gudgeon is attached to the core. Reinforcing ribs are laid on the end wall, the ribs, which radiate from the hub, extend over the contiguous portions of the cylindrical wall of the tank. The ribs are formed with a center core, preferably of foamed plastic. A belt track and a support ring are also formed integrally on the cylindrical wall of the tank.
29 Hide processing method and apparatus US3518849D 1968-11-26 US3518849A 1970-07-07 EGGLESTON WILLIAM S
30 Closure for tanning drums US18425850 1950-09-11 US2697534A 1954-12-21 HURST TOPLEY CHARLES
31 Securement for hatch covers and the like US26312351 1951-12-24 US2665161A 1954-01-05 STEHLING RALPH J
32 Apparatus for the treatment of hides, skins, and the like US22045251 1951-04-11 US2599503A 1952-06-03 GEORGE WILSON EVAN
33 Treating skins, textile fabrics, and the like US67018846 1946-05-16 US2426372A 1947-08-26 PAUL POSER
34 Tumbling machine US46844542 1942-12-09 US2360380A 1944-10-17 VETORINO JOHN E; GENDRON NORMAN R
35 Apparatus for use in treating hides, skins, and the like US28553539 1939-07-20 US2250679A 1941-07-29 RUSSELL JOSEPH L
36 Drum used in the processing of hides and skins US11306836 1936-11-27 US2090185A 1937-08-17 DWIGHT CLARKE NORMAN
37 Method of treating leather US43988130 1930-03-29 US1877119A 1932-09-13 BLATZ PETER A
38 Method of tanning hides and skins US41818230 1930-01-03 US1824549A 1931-09-22 AARON HOYT
39 Method of and apparatus for treating hides and skins US58860622 1922-09-16 US1694447A 1928-12-11 MERRITT MATTHEW M
40 Apparatus for and method of tanning hides US54886122 1922-04-01 US1668652A 1928-05-08 MERRITT MATTHEW M
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