GB318346A - Improvements in lifting jacks - Google Patents

Improvements in lifting jacks

Info

Publication number
GB318346A
GB318346A GB2057628A GB2057628A GB318346A GB 318346 A GB318346 A GB 318346A GB 2057628 A GB2057628 A GB 2057628A GB 2057628 A GB2057628 A GB 2057628A GB 318346 A GB318346 A GB 318346A
Authority
GB
United Kingdom
Prior art keywords
brockhaus
rack
load
shaft
jack
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
Application number
GB2057628A
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.)
HERMANN BROCKHAUS
JULIUS BROCKHAUS
Original Assignee
HERMANN BROCKHAUS
JULIUS BROCKHAUS
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 HERMANN BROCKHAUS, JULIUS BROCKHAUS filed Critical HERMANN BROCKHAUS
Priority to GB2057628A priority Critical patent/GB318346A/en
Publication of GB318346A publication Critical patent/GB318346A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/02—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

318,346. Pielhau, W., Brockhaus, J., Brockhaus, W., Brockhaus, P., Brockhaus, W., Brockhaus, H., and Brockhaus, P., (trading as Brockhaus S÷hne). July 16, 1928. Jacks.-A rack-and-pinion jack specially adapted for raising the rails of a railway track and having two geared shafts for light and heavy loads has a pedal-operated ratchet pawl device for facilitating quick lowering of the load. The load-engaging foot h is carried by a rack g which can be raised quickly by the rotation of a shaft d having a pinion f engaging with the rack. The rack can be raised slowly by the rotation of a second shaft d<1> connected by reducing gearing v to the shaft d. The shaft d' carries a ratchet wheel i<1> normally engaged by a detent pawl r<1>. A pedal lever n pivoted to the casing can be depressed to disengage the pawl from the ratchet wheel to allow a quick lowering of the load and removal of the jack, a handle c being provided for this purpose. Quick engagement of the jack with the load can be obtained by inserting a hook, which may be provided on the operating handle, through an opening s in the top of the casing and engaging an aperture t in the top of the rack.
GB2057628A 1928-07-16 1928-07-16 Improvements in lifting jacks Expired GB318346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2057628A GB318346A (en) 1928-07-16 1928-07-16 Improvements in lifting jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2057628A GB318346A (en) 1928-07-16 1928-07-16 Improvements in lifting jacks

Publications (1)

Publication Number Publication Date
GB318346A true GB318346A (en) 1929-09-05

Family

ID=10148181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2057628A Expired GB318346A (en) 1928-07-16 1928-07-16 Improvements in lifting jacks

Country Status (1)

Country Link
GB (1) GB318346A (en)

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