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Publication numberUS1659433 A
Publication typeGrant
Publication dateFeb 14, 1928
Filing dateJul 1, 1925
Priority dateJul 1, 1925
Publication numberUS 1659433 A, US 1659433A, US-A-1659433, US1659433 A, US1659433A
InventorsWaldemar Kroll
Original AssigneeYale & Towne Mfg Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sealed padlock
US 1659433 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Feb. 14 1928.

' v w. KROLL SEALED PADLOCK Filed July 1, 1925 Tao proved sealed padlock, showing UNITED STATES PATENT OFFICE.





Application filed July 1, 1925 Serial No. 40,867..

One object of my invention is to provide a padlock with a seal that will close the key opening in the lock, the lock being so designed that the key cannot be withdrawn from the lock until the shackle of the lock is closed and is engaged by the bolt.

Another object of the invention is to prevent the opening of the lock and the withdrawal of the key and the appliance of the seal to the open lock. 7

In the accompanying drawings:

Fig. 1 is a perspective view of my imposition and the shackle closed;

Fig. 2 is a sectional view of a lock to which my invention is applied; the shackle being open; and

Fig. 3 is an end view of the lock partly broken away.

My invention is used in connection with a lock. for which patent was granted to Frank Soley April. 26, 1910, N0.'956,213.

Referring to the drawings, 1 is the casing of the lock. 2 is the shackle, which is pivoted to the casing at 3. 4 is a key pin. 5

is a bolt for engagingthe nose of the shackle.

6 is a sliding member, which has an extension 7 that encircles the key pin 4. The key 8 is mounted on the pin 4, as shown in Fig. 3, and when the shackle is in the open position, as illustrated in Figs. 2 and 3, it is held within the lock by the encircling member 7. The key cannot be removed until the shackle 2 is closed and the bolt 5 is'in engagement therewith. When the parts are in this position, the encircling member is moved clear of the key so that the key can be withdrawn clear of thelock;

the seal in broken so that the proper key can be in- Encircling the ke openin of the padlock is a plate 10, which has a ey opening 11 40 that coincides with the opening in the body of the lock. In this plate is a channel 12 for the passage of the sealing strip 13. This sealing strip extends around the body of the lock, as illustrated in Fig. 1, and the two ends of the strip are united by a seal 14. This sealing strip closes the key opening in the lock and prevents the manipulation of the .lock by a key. or by a picking instrument. i

In order to open the lock, the seal must be serted in the lock. After the key is inserted and the shackle is disengaged from the locking mechanism, the key 1s retained in the 5 lock .until the shackle is again closed and locked. This prevents the sealing of the lock until the shackle is closed and locked and also prevents the withdrawal of the key and the appliance of the seal to the-open lock. 'All tampering with the lock is absolutely impossible, as the lock must be closed before the seal can be applied.

I claim:

In a padlock, the combination with a casing having a key opening therein, of a shackle; a plate permanently attached to or forming part of the casing and encircling the key opening of the lock, said plate having a key opening coinciding with'the key

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3572063 *Sep 8, 1969Mar 23, 1971Master Lock CoTamper-proof seal retaining locks
US4676084 *Apr 17, 1986Jun 30, 1987Signorelli John AProtecting and sealing cap
US7021092Oct 19, 2004Apr 4, 2006Stanton Concepts Inc.Multiple function lock
US7424812Jun 18, 2004Sep 16, 2008Stanton Concepts Inc.Multiple function lock
US7434426May 13, 2004Oct 14, 2008Stanton Concepts Inc.Multiple function lock
US7694542Jul 21, 2005Apr 13, 2010Stanton Concepts Inc.Tool operated combination lock
US7712342Oct 21, 2005May 11, 2010Stanton Concepts Inc.Tool operated combination lock
US7913526Aug 27, 2008Mar 29, 2011Stanton Concepts Inc.Multiple function lock
US7934406Feb 12, 2008May 3, 2011Stanton Concepts Inc.Multiple function lock
US8047027Aug 5, 2010Nov 1, 2011Stanton Concepts, L.L.C.Multiple function lock
U.S. Classification70/50, 70/423
International ClassificationE05B39/02, E05B39/00, E05B67/00, E05B67/24
Cooperative ClassificationE05B67/24, E05B39/02
European ClassificationE05B67/24, E05B39/02