US185832A - Improvement in burglar-proof safes - Google Patents
Improvement in burglar-proof safes Download PDFInfo
- Publication number
- US185832A US185832A US185832DA US185832A US 185832 A US185832 A US 185832A US 185832D A US185832D A US 185832DA US 185832 A US185832 A US 185832A
- Authority
- US
- United States
- Prior art keywords
- burglar
- safes
- proof
- improvement
- sheets
- 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
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05G—SAFES OR STRONG-ROOMS FOR VALUABLES; BANK PROTECTION DEVICES; SAFETY TRANSACTION PARTITIONS
- E05G1/00—Safes or strong-rooms for valuables
- E05G1/02—Details
- E05G1/024—Wall or panel structure
Definitions
- My invention relates to that class of tire proof safes which are made burglarproof by the application of hardened steel plates, and is to furnish safes at a low price in proportion to their absolute proof against the attacks of burglars.
- Figure 1 shows a top view of a safe, partly in cross-section. partly with the different layers or sheets broken away.
- Fig. 2 shows a cross-section of a part of a simple compound plate.
- Fig. 3 is a plan of a compound sealeplate.
- Fig. 4 is a cross-section of the same.
- I reduce the cost of a safe by using as small an amount of metal as the solidity of the work will admit, and make the iron and steel sheets in my safes very thin, about one-eighth of an n thickness, and for making the safes burglar-proof I arrange them in such a way that it is impossible to remove or penetrate them by tools carried by burglars in such time at their command.
- a third casing as shown in Fig. 3 or 4, or any other safety arrangement, or none at all, may be placed between these two described casings.
- the hard steel cannot be broken, on account of the two adjoining tempered strips; and it" a drill should hit even a tempered strip it would be ruined by striking the sides of the adjoining hard strips.
- Rivet and other holes necessary for fitting together the different sheets have to be bored before the steel sheets are hardened.
- the outer and inner casing of fire and burp,- lar proof safes constructed of single compound plates, composed of two iron sheets and one middle steel sheet of alternately hardened and tempered strips, united by countersunk rivets, in the manner and for the purposes as specified.
Description
309. SAFES, BANK PROTECTION AND RELATED DEVICES.
R. MUMKNN.
BURGLAR-PROOF SAFE.
No. 185,832. Patented Jan. 2, 1877.
185,882- BURGLAR-PROOF SAFES. Rot Neumann, Konigsberg. i. P.. Prus [Filed Jun. 4.576.]
mm m A mm A m mm x I W mm WWW Wit news es (BM/an.
r1, PETERS, PHOTO-LITHOGHAPHER, WASHINGTON. 0 c
' the object inch i UNITED STATES ROBERT NEUMANN, OF KGNIGSBERG, I. P
PATENT Qrrxca PRUSSIA.
IMPROVEMENT IN BURGLAR-PROOF SAFES.
Specification forming part of Letters Patent No. 1
85,832, dated January 2, 1877; application filed January 4, 1876.
To all whom t't may concern:
Be it known that I, ROBERT NEUMANN, of the city of Konigsberg, i. P., Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Burglar-Proof Safes; and I do hereby declare that the following is a full and exact description thereof.
The accompanying drawing formsa part of this specification.
My invention relates to that class of tire proof safes which are made burglarproof by the application of hardened steel plates, and is to furnish safes at a low price in proportion to their absolute proof against the attacks of burglars.
Figure 1 shows a top view of a safe, partly in cross-section. partly with the different layers or sheets broken away. Fig. 2 shows a cross-section of a part of a simple compound plate. Fig. 3 is a plan of a compound sealeplate. Fig. 4 is a cross-section of the same.
I reduce the cost of a safe by using as small an amount of metal as the solidity of the work will admit, and make the iron and steel sheets in my safes very thin, about one-eighth of an n thickness, and for making the safes burglar-proof I arrange them in such a way that it is impossible to remove or penetrate them by tools carried by burglars in such time at their command.
For the outside and in of my safe I use plates constructed from three sheets of metal, each about one-eighth thick, as shown in Fig. 2, so that the middle sheet B, in one or more pieces, is steel-hardened in a peculiar way, as described hereafter. The outside and inside sheets A and U are iron. These three sheets are united by means of countersunk rivets, to form a simple compound plate, about three-eighths thick. Such simple compound plates are shown in Fig. 1 as forming the outer casing D and the inner casing E of my safe.
side cover or casing A third casing, as shown in Fig. 3 or 4, or any other safety arrangement, or none at all, may be placed between these two described casings. v
To make the safe fire-proof the open spaces between the difl'erent plates 1) F E are filled, in the common way, with ashes or other suitable material, according to the judgment of the manufacturer.
If the steel sheets B (used in my construction) are made hard all over, it would be possible to break them in pieces, and if they are tempered all over they could easily be drilled; therefore, I combine hardened steel with tempered steel in the following manner: I harden the steel sheets first all over and temper them afterward in strips of about three-eighths inch width, so as to have a strip three-eighths wide, tempered; then a strip three-eighths wide, hard, and so on. The hard steel cannot be broken, on account of the two adjoining tempered strips; and it" a drill should hit even a tempered strip it would be ruined by striking the sides of the adjoining hard strips.
Rivet and other holes necessary for fitting together the different sheets have to be bored before the steel sheets are hardened.
Having described my invention, what I claim. and desire to secure by Letters Pat cut, is
The outer and inner casing of fire and burp,- lar proof safes, constructed of single compound plates, composed of two iron sheets and one middle steel sheet of alternately hardened and tempered strips, united by countersunk rivets, in the manner and for the purposes as specified.
This specification signed by me in presence of two witnesses this the 6th day of October, 1875.
ROBERT NEUMANN. Witnesses:
UARL T. BUROHARDT,
EDWARD P. MAcLEAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US185832A true US185832A (en) | 1877-01-02 |
Family
ID=2255239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US185832D Expired - Lifetime US185832A (en) | Improvement in burglar-proof safes |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US185832A (en) |
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0
- US US185832D patent/US185832A/en not_active Expired - Lifetime
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