US203161A - Improvement in key-fasteners - Google Patents
Improvement in key-fasteners Download PDFInfo
- Publication number
- US203161A US203161A US203161DA US203161A US 203161 A US203161 A US 203161A US 203161D A US203161D A US 203161DA US 203161 A US203161 A US 203161A
- Authority
- US
- United States
- Prior art keywords
- key
- escutcheon
- fasteners
- plate
- improvement
- 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 - Lifetime
Links
- 239000000789 fastener Substances 0.000 title 2
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B13/00—Devices preventing the key or the handle or both from being used
- E05B13/04—Devices preventing the key or the handle or both from being used shaped as fork-like implements grasping and fixing the key or a handle, e.g. a thumb-turn
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/70—Operating mechanism
- Y10T70/7441—Key
- Y10T70/7915—Tampering prevention or attack defeating
- Y10T70/7989—Key securers, fasteners or retainers
Definitions
- FIG.6 is a diagrammatic representation of FIG.
- This invention relates to that class of slotted plates or guards which are applied to the inner escutcheon of a lock, either for the purpose of preventing the key being accidentally detached or else to prevent the key being turned from the outside.
- My invention consists in a novel construction of the escutcheon and swinging guardplate, whereby the key can be readily and securely locked in one position, and as readily unlocked.
- Figure 1 is an elevation of one form of my invention, the guardplate being swung aside from the key-hole.
- Fig. 2 is an elevation of the same, showing the guard-plate locked and engaged with the non-circular part of a key.
- Fig. 3 is an enlarged vertical section through the locking device of the same.
- Figs. 4, 5, and 6 show a modification of the locking device.
- A represents the inner escutcheon of a lock, said escutcheon being provided with a keyhole having the customary eye B and slot b.
- Pivoted to this escutcheon at a is a swinging plate, 0, notched or slotted from one side at c to fit around the non-circular portion D of any key barrel or pipe, as represented in Fig. 2.
- the swinging guard-plate is provided at its free end with a tongue, 0, adapted to enter a groove, 6, in lug E, which latter may be cast with escutcheon A, or it may be secured to said escutcheon when it is applied to the door.
- the guard-plate O is tapped near its lower end to receive a screw, F, whose external knob or head G serves as a handle wherewith said plate may be readily swung aside either to the right or left.
- Screw F is furnished with a pin or collar, f, to prevent said device F being detached from plate 0. This pin or collar traverses the chambered portion H of guard G, as clearly seen in Figs. 3 and 6.
- the plate 0 is swung to the left, so as to cause its slot 0 to embrace the non-circular shank D of the key, after which knob G is rotated in such manner as to introduce the inner end of screw F within the slot 1) of the key-hole.
- knob G is rotated in such manner as to introduce the inner end of screw F within the slot 1) of the key-hole.
- the tongue 0 and groove 0 effectually prevent the guardplate being sprung away from the escutcheon A, so as to allow dislodgment of the key.
Landscapes
- Casings For Electric Apparatus (AREA)
Description
J. W. JOHNSON.
Key-Fastener.
No. 203,161. Patented April 30,1878.
FIG,6.
FIG-5.
flttegit- UNITED STATES PATENT OFFICE.
JOHN WILLIAM JOHNSON, OF OINOIN N ATI, OHIO.
IMPROVEMENT IN KEY- FASTENERS.
Specification forming part of Letters Patent No. 203,161, dated April 30, 1878; application filed July 29, 1876.
To all whom it may concern:
Be it known that I, JOHN WM. J oHNsoN, of the city of Cincinnati, State of Ohio, have invented certain new and useful Improve ments in Key-Guards, of which the following is a specification:
This invention relates to that class of slotted plates or guards which are applied to the inner escutcheon of a lock, either for the purpose of preventing the key being accidentally detached or else to prevent the key being turned from the outside.
My invention consists in a novel construction of the escutcheon and swinging guardplate, whereby the key can be readily and securely locked in one position, and as readily unlocked.
Figure 1 is an elevation of one form of my invention, the guardplate being swung aside from the key-hole. Fig. 2 is an elevation of the same, showing the guard-plate locked and engaged with the non-circular part of a key. Fig. 3 is an enlarged vertical section through the locking device of the same. Figs. 4, 5, and 6 show a modification of the locking device.
A represents the inner escutcheon of a lock, said escutcheon being provided with a keyhole having the customary eye B and slot b. Pivoted to this escutcheon at a is a swinging plate, 0, notched or slotted from one side at c to fit around the non-circular portion D of any key barrel or pipe, as represented in Fig. 2. The swinging guard-plate is provided at its free end with a tongue, 0, adapted to enter a groove, 6, in lug E, which latter may be cast with escutcheon A, or it may be secured to said escutcheon when it is applied to the door. The guard-plate O is tapped near its lower end to receive a screw, F, whose external knob or head G serves as a handle wherewith said plate may be readily swung aside either to the right or left. Screw F is furnished with a pin or collar, f, to prevent said device F being detached from plate 0. This pin or collar traverses the chambered portion H of guard G, as clearly seen in Figs. 3 and 6.
In this form of my invention the plate 0 is swung to the left, so as to cause its slot 0 to embrace the non-circular shank D of the key, after which knob G is rotated in such manner as to introduce the inner end of screw F within the slot 1) of the key-hole. In this position of the various parts it is apparent that the key cannot be turned by any implement applied at the outside of the door; neither can the guard be shifted aside so as to be disengaged from said key. Furthermore, the tongue 0 and groove 0 effectually prevent the guardplate being sprung away from the escutcheon A, so as to allow dislodgment of the key.
In the modification of my invention represented in Figs. 4., 5, and 6, the inner end of screw F fits into a slight pit or depression, I, formed on the inner surface of the escutcheon A. With this exception the guard is essentially the same as represented in Figs. 1., 2, and 3.
It is immaterial whether the locking device employed is of the form shown in Fig.1 or like the device shown in Fig. 4., so far as the functions of the knob are concerned, as the latter member serves as a handle to the guardplate in either of these cases.
I claim as my invention- In combination with the escutcheon A B b E c and swinging guard-plate O c c, the knob G and screw F, which latter engages either with slot 1) or pit I, substantially as described.
JOHN WILLIAM JOHNSON.
Attest:
WM. J. APPLEGATE, O. WALTON, Jr.
Publications (1)
Publication Number | Publication Date |
---|---|
US203161A true US203161A (en) | 1878-04-30 |
Family
ID=2272566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US203161D Expired - Lifetime US203161A (en) | Improvement in key-fasteners |
Country Status (1)
Country | Link |
---|---|
US (1) | US203161A (en) |
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0
- US US203161D patent/US203161A/en not_active Expired - Lifetime
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