GB869188A - Improvements relating to piston-operated repetition devices - Google Patents

Improvements relating to piston-operated repetition devices

Info

Publication number
GB869188A
GB869188A GB1259A GB1259A GB869188A GB 869188 A GB869188 A GB 869188A GB 1259 A GB1259 A GB 1259A GB 1259 A GB1259 A GB 1259A GB 869188 A GB869188 A GB 869188A
Authority
GB
United Kingdom
Prior art keywords
piston
rod
cylinder
tool
screw
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
GB1259A
Inventor
Neville Eric Jones
Roy Chadwick
Geoffrey Bertrand Norman
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.)
Parkinson & Town Ltd
Original Assignee
Parkinson & Town 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 Parkinson & Town Ltd filed Critical Parkinson & Town Ltd
Priority to GB1259A priority Critical patent/GB869188A/en
Publication of GB869188A publication Critical patent/GB869188A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

869,188. Fluid-pressure presses. PARKINSON & TOWN Ltd. Dec. 31, 1959 [Jan. 1, 1959; April 9, 1959], Nos. 12/59 and 11930/59. Class 122 (3). [Also in Group XXII] A fluid-pressure power press comprises a piston 8 mounted in a cylinder, a piston-rod 15 extending out of the cylinder at both ends, means for reciprocating the piston in the cylinder, a tool-holder connected to one end of the piston-rod, and means consisting of a connection between the piston-rod and piston which allows the piston-rod to be retracted through the piston to give an occasional displacement of the tool. holder greater than that of the normal working stroke of the piston for tool-changing purposes. The cylinder comprises a pair of metal discs 1, 2 of equal diameter, each with an axial bore 3 on its outer side and separated by an annular member 4 constituting the peripheral wall of the cylinder. The piston 8 is formed with bosses 9, 11 sliding in bores 10, 12 in the bosses 3 and a screw-threaded bore in which is mounted the piston-rod 15 carrying at its upper end a hand wheel 16 to turn the rod, means being provided for holding the piston against this rotation. Air admission ports 18, 19 are shown as formed in the discs 1, 2, and the piston is sealed in the cylinder by sealing-rings 13, 14. In use, the piston has a constant working stroke but, when extra space is required for replacing the tool, the rod 15 is screwed upward through the piston. If desired, instead of the rod 15 and the piston 8 being in positive engagement in all relative positions, there could be free association between them for the longer part of their relative movement and a positive association, as by screw-threads or inter-engaging lugs, for the remainder of their relative movement. The boss 3 of the lower disc 2 may be screw-threaded to permit fitting of the device to the head of a press. In addition, a diaphragm seal may be used between the piston and cylinder. The first Provisional Specification describes also a construction where the piston-rod is rigidly attached to the piston and the upper end wall of the cylinder is movable so as to increase the stroke of the piston to allow adjustment of the tools.
GB1259A 1959-01-01 1959-01-01 Improvements relating to piston-operated repetition devices Expired GB869188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1259A GB869188A (en) 1959-01-01 1959-01-01 Improvements relating to piston-operated repetition devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1259A GB869188A (en) 1959-01-01 1959-01-01 Improvements relating to piston-operated repetition devices

Publications (1)

Publication Number Publication Date
GB869188A true GB869188A (en) 1961-05-31

Family

ID=9696776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1259A Expired GB869188A (en) 1959-01-01 1959-01-01 Improvements relating to piston-operated repetition devices

Country Status (1)

Country Link
GB (1) GB869188A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414998A1 (en) * 1978-01-18 1979-08-17 Guen & Hemidy Le Coupling between injection moulder ejector ram and ejection plunger - is screwed rod through ram bore carrying adjustable tappet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414998A1 (en) * 1978-01-18 1979-08-17 Guen & Hemidy Le Coupling between injection moulder ejector ram and ejection plunger - is screwed rod through ram bore carrying adjustable tappet

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