US456998A - Franz ludewig - Google Patents
Franz ludewig Download PDFInfo
- Publication number
- US456998A US456998A US456998DA US456998A US 456998 A US456998 A US 456998A US 456998D A US456998D A US 456998DA US 456998 A US456998 A US 456998A
- Authority
- US
- United States
- Prior art keywords
- door
- ludewig
- franz
- lever
- guard
- 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
- 235000013533 rum Nutrition 0.000 description 2
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
- E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
- E05C17/36—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing comprising a flexible member, e.g. chains
- E05C17/365—Security chains
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- 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
- Y10T292/00—Closure fasteners
- Y10T292/28—Extension link
- Y10T292/283—Chain
Definitions
- PETERS 1:0 mom-mum, wAsmuGmN n c face-plate, as shown.
- This invention relates to a door-guard that indicates if any of the tenants are out and prevents the closing of the guard-chain as long as such tenants are out.
- the invention consists in the various features of improvement more fully pointed out in the claim.
- Figure 1 is afront view of my improved door-guard, showing it closed.
- Fig. 2 is a similar view showing it open.
- Fig. 3 is a top view of Fig. 1; and
- Fig. 4 a section on line so on, Fig. 2.
- the letter A represents a door, and A a door-frame.
- a casing To the inner side of the door A there is secured a casing at, having a slotted
- the casing contains a series of parallel slides a, visible through the slotted face-plate from the interior of the house and projecting at one end out of the casing, as shown.
- the slides may display the names of the occupant, the numbers of the floors, the Words In and Out, orsimilar matter. When a slide is drawn out, it indicates that the tenants of that floor are not at home, as the central slide in Fig. 2.
- the end of each slide a is by pivot a connected to the Serial No. 376,935. (No model.)
- WVhat I claim is The combination of a slotted face-plate with slides a, angle-levers d, pivotally connected thereto, a lever h, adapted to engage the free ends of levers d, and with a locking-chain f and hook e, substantially as specified.
Description
(No Model.)
P. LUDEWIG.
DOOR GUARD.
No. 456,998. Patented Aug. 4, 1891.
g law rum Noam! PETERS 1:0,, mom-mum, wAsmuGmN n c face-plate, as shown.
UNITED STATES PATENT OFFICE.
FRANZ LUDEYVIG, OF DUSSELDORF, GERMANY.
DOOR-GUARD.
SPECIFICATION forming part of Letters Patent No. 456,998, dated August 4, 1891.
Application filed January 6, 1891.
To all whom it may concern.-
Be it known that I, FRANZ LUDEWIG, a subject of the Emperor of Germany, residing at Dusseldorf, Germany, have invented certain new and usefullmprovements in Door-Guards, of which the following is a specification.
This invention relates to a door-guard that indicates if any of the tenants are out and prevents the closing of the guard-chain as long as such tenants are out.
The invention consists in the various features of improvement more fully pointed out in the claim.
In the accompanying drawings, Figure 1 is afront view of my improved door-guard, showing it closed. Fig. 2 is a similar view showing it open. Fig. 3 is a top view of Fig. 1; and Fig. 4 a section on line so on, Fig. 2.
The letter A represents a door, and A a door-frame. To the inner side of the door A there is secured a casing at, having a slotted The casing contains a series of parallel slides a, visible through the slotted face-plate from the interior of the house and projecting at one end out of the casing, as shown. The slides may display the names of the occupant, the numbers of the floors, the Words In and Out, orsimilar matter. When a slide is drawn out, it indicates that the tenants of that floor are not at home, as the central slide in Fig. 2. The end of each slide a is by pivot a connected to the Serial No. 376,935. (No model.)
slotted arm of an elbow-lever d, pivoted to casing a by pivots a To the door A there is pivoted at b'alever b, the free end of which carries the guardchain f, adapted to engage hook e on doorframe A. The lever 19 is pressed toward the levers d by a spring 0. WVhen all the slides are in, the lever b occupies the upright position shown in Fig. 1, and the chain f may be readily secured to the hook 6, so as to lock the door; but when any one of the slides ais drawn out, its lever cl Will assume a position substantially at right angles to the lever 19 and hold the latter in the inclined position shown in Fig.2. The chain fis of such a length 0111 that in this inclined position of the lever b it will not reach to hook e, and
thus the chain cannot be fastened as long as all the tenants are not in.
WVhat I claim is The combination of a slotted face-plate with slides a, angle-levers d, pivotally connected thereto, a lever h, adapted to engage the free ends of levers d, and with a locking-chain f and hook e, substantially as specified.
In testimony whereof I have signed this specification in the presence of two subscribing witnesses.
FRANZ LUDEWIG. \Vitnesses:
D. .I. PARTETTE, C. SCHMIEDING.
Publications (1)
Publication Number | Publication Date |
---|---|
US456998A true US456998A (en) | 1891-08-04 |
Family
ID=2525874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US456998D Expired - Lifetime US456998A (en) | Franz ludewig |
Country Status (1)
Country | Link |
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US (1) | US456998A (en) |
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0
- US US456998D patent/US456998A/en not_active Expired - Lifetime
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