GB432596A - Improvements in broaching machines - Google Patents

Improvements in broaching machines

Info

Publication number
GB432596A
GB432596A GB11041/34A GB1104134A GB432596A GB 432596 A GB432596 A GB 432596A GB 11041/34 A GB11041/34 A GB 11041/34A GB 1104134 A GB1104134 A GB 1104134A GB 432596 A GB432596 A GB 432596A
Authority
GB
United Kingdom
Prior art keywords
nut
gear wheels
pawls
teeth
gear
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
GB11041/34A
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.)
Hopkinsons Ltd
Original Assignee
Hopkinsons 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
Priority to BE390250D priority Critical patent/BE390250A/xx
Priority to US682259A priority patent/US2058776A/en
Priority to FR760543D priority patent/FR760543A/en
Priority to DEA71078D priority patent/DE670300C/en
Application filed by Hopkinsons Ltd filed Critical Hopkinsons Ltd
Priority to GB11041/34A priority patent/GB432596A/en
Publication of GB432596A publication Critical patent/GB432596A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C3/00—Typewriters for ciphering or deciphering cryptographic text
    • G09C3/04—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
    • G09C3/06—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member the connections being mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D37/00—Broaching machines or broaching devices
    • B23D37/02—Broaching machines with horizontally-arranged working tools
    • B23D37/04—Broaching machines with horizontally-arranged working tools for broaching inner surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)
  • Retarders (AREA)

Abstract

432,596. Broaching. HOPKINSONS, Ltd., BROWN, R. L., and METCALFE, T., Britannia Works, Wheathouse Road, Huddersfield, Yorkshire. April 12, 1934, No. 11041. [Class 83 (iii)] A double-ended broaching machine has means for automatically reversing the pull screw by which the broaches are traversed. The non-rotating pull screw a, to each end of which a broach may be connected, is moved by a rotatable nut b, mounted between thrust bearings in an oil-tight gear case u. Rotation of the nut in opposite directions is obtained through two gear sets p, one being a reverse drive, from a single belt pulley s. The gear wheels h of the driving trains are keyed to sleeves g which carry spring-pressed pawls e on their inner faces adapted to engage a tooth n provided on the periphery of a collar at each end of the nut b. Engagement of the pawls and nut teeth is controlled by circular cams j engaging the pawl teeth k, Fig. 3, and rotated by gear wheels i which run loose on the sleeves g and are of the same diameter as, but having a different number of teeth from, the adjacent gear wheels h, the gear wheels p driving both the gears hand i. The cams are so shaped as to provide for a continuous automatic reverse with a dwell, when both pawls are disengaged, between reversals.
GB11041/34A 1932-08-05 1934-04-12 Improvements in broaching machines Expired GB432596A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE390250D BE390250A (en) 1932-08-05 1932-08-05
US682259A US2058776A (en) 1932-08-05 1933-07-26 Steganographic typewriter
FR760543D FR760543A (en) 1932-08-05 1933-07-27 Steganography machine
DEA71078D DE670300C (en) 1932-08-05 1933-08-04 Encryption machine with imprint of the characters by striking a hammer
GB11041/34A GB432596A (en) 1932-08-05 1934-04-12 Improvements in broaching machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE390250T 1932-08-05
GB11041/34A GB432596A (en) 1932-08-05 1934-04-12 Improvements in broaching machines

Publications (1)

Publication Number Publication Date
GB432596A true GB432596A (en) 1935-07-30

Family

ID=31994789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11041/34A Expired GB432596A (en) 1932-08-05 1934-04-12 Improvements in broaching machines

Country Status (5)

Country Link
US (1) US2058776A (en)
BE (1) BE390250A (en)
DE (1) DE670300C (en)
FR (1) FR760543A (en)
GB (1) GB432596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487699A (en) * 1945-01-31 1949-11-08 Bohn Aluminium & Brass Corp Broaching machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR966872A (en) * 1947-05-30 1950-10-20 Olivetti & Co Spa Device for advancing the encryption wheels in a signal transmitting device
DE1141815B (en) * 1955-05-26 1962-12-27 Europ Handelsges Anst Switching device on encryption machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487699A (en) * 1945-01-31 1949-11-08 Bohn Aluminium & Brass Corp Broaching machine

Also Published As

Publication number Publication date
FR760543A (en) 1934-02-24
DE670300C (en) 1939-01-16
US2058776A (en) 1936-10-27
BE390250A (en) 1932-09-30

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