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Patent 19813 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 19813
(21) Application Number: 19813
(54) English Title: SAFETY CATCH FOR ELEVATORS
(54) French Title: ARRET DE SURETE POUR MONTE-CHARGES
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC): N/A
(72) Inventors :
  • WEEKS, FRANK A. (Canada)
(73) Owners :
  • FRANK A. WEEKS
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1884-07-17
(22) Filed Date:
Availability of licence: N/A
Dedicated to the Public: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data: None

Abstracts

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Claims

Note: Claims are shown in the official language in which they were submitted.

Claim lst The combination, with an elevator car, of sliding bolts held on the underside of the oar, a toggle joint uniting the inner ends of the sliding bolts, a weight suspended from the middle of the toggle joint, locking pins resting on the sliding bolts, and of a rope or chain for raising the weight and middle of the toggle joint to force the sliding bolts outward, substantially as herein shown and described. 2nd. The combination, with an elevator car, of the sliding bolts D, the toggle joint H uniting the inner ends of the same, the casings X, the locking pins M in the same, the weight J suspended from the toggle joint, and the safety rope k, substantially as herein shown and described. 3rd. The combination, with an elevator provided with openings into which the heads of the automatic locking bolts project, of the pivoted plate 0 constructed to cover said openings and prevent dirt from entering therein, substantially as set forth.
Description

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Representative Drawing

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Administrative Status

2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.

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Event History

Description Date
Inactive: Expired (old Act Patent) latest possible expiry date 1902-07-17
Grant by Issuance 1884-07-17

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
FRANK A. WEEKS
Past Owners on Record
None
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
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