US50751A - Alfeed v - Google Patents
Alfeed v Download PDFInfo
- Publication number
- US50751A US50751A US50751DA US50751A US 50751 A US50751 A US 50751A US 50751D A US50751D A US 50751DA US 50751 A US50751 A US 50751A
- Authority
- US
- United States
- Prior art keywords
- plates
- door
- lock
- pin
- night
- 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
- 230000001154 acute Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/003—Locking bars, cross bars, security bars
- E05C19/004—Locking bars, cross bars, security bars at an angle between door and floor or wall
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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
- Y10T292/65—Braces
- Y10T292/67—Portable
Definitions
- Doors which are not provided with bolts are always unsafe, as almost all ot' the ordinary door-locks can be easily picked.
- the object ot' my invention is to provide a portable or pocket doorlock which shall be applicable to any and all varieties of doors, and which canA be applied to a door so as to et'fectually prevent the entrance ot persons from without, as will be hereinafter described.
- a a a represent three triangular plates ot' metal, of an equal size, which can be stamped out ot" thin metal plates by means of dies and punches adapted for the purpose. rlhese three plates are pivoted together by means ot' a transverse pin, b, which should be large and strong; the ends of this pin may be riveted so as to keep it in its place and allow the three plates to turn freely around it.
- c c are perlorations which are made through the intermediate plate, a', in a curved line which is concentric with the axis of the pin b, so that the perforations d d through the outside plates, a a, may both be brought to register with either one of the holes o c, and a pin, e,
- Figs. 1 and 8 inserted, as shown in Figs. 1 and 8, for the purpose of holding the three plates rigidly together in a position for locking a door.
- the acute angles ofthe triangular plates are made sufciently sharp to enter wood with a slight pressure upon them.
- the three plates When the device is not in immediate use the three plates are turned so as to present the compact l'orm shown in Fig. 4, and it can be conveniently carried in the pocket.
- rIhe advantage ot" using triangular plates is that the greatest strength occurs at the point where the greatest strain comes upon them, and by using three plates two of them will support the other, so as to keep it upright against a door.
- the acute angles can be adjusted nearer to or set farther from each other, to increase or diminish the angle of thel prop.
- a portable or pocket door-fastening composed ol ⁇ triangular plates, which are pivoted together so as to operate substantially as described.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Description
position for holding a door closed.
UNITED STATES PATENT OFFICE.
FREDERICK, MARYLAND.
TRAVELERS NIGHT-LOC K.
Specification forming part of Letters Patent No. 50,751, dated October 31, 1865.
To all whom it may concern:
Be it known that LALERED V. THOMAS, of Frederick, county of Frederick, and State of Maryland, have invented a new and useful Travelers Night-Lock; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a perspective view, showing the manner of applying the lock to the inside of a door. Fig. 2 is a side view ot' the lock in Figs. 3 and 4 are perspective views ot' the lock.
Similar letters of reference indicate corresponding parts in the several figures.
Doors which are not provided with bolts are always unsafe, as almost all ot' the ordinary door-locks can be easily picked. Hence the importance of having a contrivance by means of which a person can securely lock himself into his room at night and feel perfectly secure from burglars, and upon leaving the room carry the lock withihim.
The object ot' my invention is to provide a portable or pocket doorlock which shall be applicable to any and all varieties of doors, and which canA be applied to a door so as to et'fectually prevent the entrance ot persons from without, as will be hereinafter described.
To enable others skilled in the art'to understand my inventioml will describe its construction and operation.
ln the accompanying drawings, a a a represent three triangular plates ot' metal, of an equal size, which can be stamped out ot" thin metal plates by means of dies and punches adapted for the purpose. rlhese three plates are pivoted together by means ot' a transverse pin, b, which should be large and strong; the ends of this pin may be riveted so as to keep it in its place and allow the three plates to turn freely around it.
c c are perlorations which are made through the intermediate plate, a', in a curved line which is concentric with the axis of the pin b, so that the perforations d d through the outside plates, a a, may both be brought to register with either one of the holes o c, and a pin, e,
inserted, as shown in Figs. 1 and 8, for the purpose of holding the three plates rigidly together in a position for locking a door. The acute angles ofthe triangular plates are made sufciently sharp to enter wood with a slight pressure upon them.
The manner of using this lock is clearly shown in Figs. l and 2, where it will be seen that the plates are turned so that the acute angles ot' the plates t a project in an opposite direction to the acute angle ofthe intermediate plate, a. rlhe sharp angles of the plates being thus arranged, Qand the pin e inserted through the proper holes, one ofthe angles is pressed against the door and the other two pressed down upon the iloor. This forms an inclined prop which will penetrate the woodV sufficiently to retain itseltl in place and prevent the door from being forced open.
When the device is not in immediate use the three plates are turned so as to present the compact l'orm shown in Fig. 4, and it can be conveniently carried in the pocket.
rIhe advantage ot" using triangular plates is that the greatest strength occurs at the point where the greatest strain comes upon them, and by using three plates two of them will support the other, so as to keep it upright against a door.
By making two or more holes through the intermediate plate, a', the acute angles can be adjusted nearer to or set farther from each other, to increase or diminish the angle of thel prop.
Having thus described my invent.ion,what I claim as new, and desire to secure by Letters Patent, is-
A portable or pocket door-fastening composed ol` triangular plates, which are pivoted together so as to operate substantially as described.
itness my hand in the matter of my application for a patent for improvement in travelers night-locks.
ALFRED V. THOMAS.
Vitnesses E. SCHAEEE,
EDM. F. BROWN.-
Publications (1)
Publication Number | Publication Date |
---|---|
US50751A true US50751A (en) | 1865-10-31 |
Family
ID=2120302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US50751D Expired - Lifetime US50751A (en) | Alfeed v |
Country Status (1)
Country | Link |
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US (1) | US50751A (en) |
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0
- US US50751D patent/US50751A/en not_active Expired - Lifetime
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