GB542787A - Improvements in or relating to means for boring cylinders - Google Patents

Improvements in or relating to means for boring cylinders

Info

Publication number
GB542787A
GB542787A GB1471840A GB1471840A GB542787A GB 542787 A GB542787 A GB 542787A GB 1471840 A GB1471840 A GB 1471840A GB 1471840 A GB1471840 A GB 1471840A GB 542787 A GB542787 A GB 542787A
Authority
GB
United Kingdom
Prior art keywords
motor
electromagnets
gear
spindle
contacts
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
GB1471840A
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.)
BROOKSIDE ENGINEERS Ltd
REGINALD JOHN MIDDLETON
Original Assignee
BROOKSIDE ENGINEERS Ltd
REGINALD JOHN MIDDLETON
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 BROOKSIDE ENGINEERS Ltd, REGINALD JOHN MIDDLETON filed Critical BROOKSIDE ENGINEERS Ltd
Priority to GB1471840A priority Critical patent/GB542787A/en
Publication of GB542787A publication Critical patent/GB542787A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q9/00—Arrangements for supporting or guiding portable metal-working machines or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2709/00—Portable machines or devices for the cylindrical bores of valve bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

542,787. Reboring engine cylinders. BROOKSIDE ENGINEERS, Ltd., and MIDDLETON R. J. Sept. 30, 1940, No. 14718. [Class 83 (iii)] The base of a device for re-boring internal combustion cylinders in situ is provided with magnetic means for holding it to the cylinder block. An electric motor e mounted on the base drives a splined shaft f connected through gears i, k, m, n, in a slidable casing to a gear j on the boring bar d which is carried in a quill guided in a guide portion b. The feed screw h is splined in the gear n and works in a nut r driven at a speed slightly higher than that of the screw through gears o, p, to impart slow downward feed to the casing and boring bar. A clutch operated by tappet mechanism may be used to disconnect the gear m from its spindle while a brake is applied to the feed screw to obtain the quick-return movement of the boring bar. The motor e and the electromagnet coils u are connected in parallel and the circuits are completed by the contacts shown in Fig. 4 arranged so that the motor cannot be started by movement of the sliding contact spindle 18 until the spindle 17 has first been moved to complete the circuit of the electromagnets. In a modification, Fig. 5, the circuits are completed by a switch arm 21 which first bridges the contacts 11, 12 to energize the electromagnets and then bridges contacts 14, 15 to start the motor. In some cases permanent magnets which may be neutralized by pole-piece movement inter-related with the motor switch may be used instead of electromagnets. The magnetic field produced by the magnets attracts some of the cuttings to the base a and lessens the risk of damage to the engine bearings &c.
GB1471840A 1940-09-30 1940-09-30 Improvements in or relating to means for boring cylinders Expired GB542787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1471840A GB542787A (en) 1940-09-30 1940-09-30 Improvements in or relating to means for boring cylinders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1471840A GB542787A (en) 1940-09-30 1940-09-30 Improvements in or relating to means for boring cylinders

Publications (1)

Publication Number Publication Date
GB542787A true GB542787A (en) 1942-01-27

Family

ID=10046263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1471840A Expired GB542787A (en) 1940-09-30 1940-09-30 Improvements in or relating to means for boring cylinders

Country Status (1)

Country Link
GB (1) GB542787A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261673A (en) * 1979-04-05 1981-04-14 Hougen Everett D Magnetic base drill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261673A (en) * 1979-04-05 1981-04-14 Hougen Everett D Magnetic base drill

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