US309411A - peters - Google Patents
peters Download PDFInfo
- Publication number
- US309411A US309411A US309411DA US309411A US 309411 A US309411 A US 309411A US 309411D A US309411D A US 309411DA US 309411 A US309411 A US 309411A
- Authority
- US
- United States
- Prior art keywords
- tube
- key
- stem
- blank
- metal
- 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
- 239000002184 metal Substances 0.000 description 22
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
-
- 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
- Y10T70/778—Operating elements
- Y10T70/7791—Keys
-
- 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
- Y10T70/778—Operating elements
- Y10T70/7791—Keys
- Y10T70/7842—Single shank or stem
- Y10T70/7859—Flat rigid
Definitions
- Figure 1 aside view of the key complete; Fig. 2, the steel blank; Fig. 3, the tube; Fig. l, a vertical section through the bit and stem end, withthe tube applied; Fig. 5, a longitudinal section through the mold, with the tube and blank set therein.
- This invention relates to an improvement in that class of door-keys in which the bit, shank, and bow are cut from sheet-steel, and
- the stem and shoulder formed by additional metal applied thereto In some cases this is cast in molds. In other cases a piece of steel is grooved to slip on over the stem end of the flat steel, and secured by closing or solder. This latter is too expensive an opera tion to be practical.
- the principal wear upon the stem of a key comes upon the back at the shoulder, and in this class of keys in which the stem is cast upon the blank the cast metal is generally so soft as to quickly wear away.
- the object of my invention is to construct the key so as to present a steel or hard-metal I surface, but yet so cheap as to be practical; and it consists in applying to the stem end of the blank a sheet-metal tube corresponding in size substantially to the finished stem, and then placing the bit end of the key in suitable molds, into which metal is poured to fill the tube, form the shoulder, and securely unite the tube with the key, and as more fully hereinafter described.
- the blank for the key is cut as seen in Fig. 5 2, the stem end a somewhat narrower than the I. spindle Z) of the key, the bit 0 extending from the stem end and in the same plane.
- On the back of the stem portion is a notch, d, or any irregularity, there, or at some other point, for the engagement of the cast metal, as hereinafter described.
- the tube is somewhat shorter than the length of the spindle, and so that the end of the blank will protrude through the tube.
- This tube is set onto the stem end over the bit 0, as seen in Fig. 4.
- the key is placed in molds which correspond in shape to the finished bit end of the key, and as seen in Fig.
- metal is poured into the mold, and flows through the tube into the recess f, to form i the shoulder g on the key, fill the tube, and close over the tube end, as at h, Fig. l, the blank being shown in that figure in broken lines.
- This operation firmly unites the sheet- 7o metal tube with the key, as if an integral part of it, and presents a steel or hard-wearing surface at all points where wear comes upon the stem.
- the cost of the tubes is trifling, so that the expense of forming the stem is slightly, if any, more than that of casting the stem upon the blank.
Description
(No Model.)
J. H. SHAW.
KEY}. I I N0..309,411. v Patented Dec. 16, 1884.
'llNirnn drains Parent tries.
JOHN H. SHAlV, OF NEYV HAVEN, CONNECTICUT, ASSIG-NOR TO SAR-GENT &
CO., OF SAME PLACE.
KEY.
SPECIFICATION forming part of Letters Patent No. 309,411, dated December 16, 1884.
Application filed August 25, 1884. (No model.)
To ctZZ 1071,0722, it IN/11]] concern.-
Be it known that I, JOHN H. SHAW, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Door-Keys; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification,and represent. in-
Figure 1, aside view of the key complete; Fig. 2, the steel blank; Fig. 3, the tube; Fig. l, a vertical section through the bit and stem end, withthe tube applied; Fig. 5, a longitudinal section through the mold, with the tube and blank set therein.
This invention relates to an improvement in that class of door-keys in which the bit, shank, and bow are cut from sheet-steel, and
then the stem and shoulder formed by additional metal applied thereto. In some cases this is cast in molds. In other cases a piece of steel is grooved to slip on over the stem end of the flat steel, and secured by closing or solder. This latter is too expensive an opera tion to be practical. The principal wear upon the stem of a key comes upon the back at the shoulder, and in this class of keys in which the stem is cast upon the blank the cast metal is generally so soft as to quickly wear away.
The object of my invention is to construct the key so as to present a steel or hard-metal I surface, but yet so cheap as to be practical; and it consists in applying to the stem end of the blank a sheet-metal tube corresponding in size substantially to the finished stem, and then placing the bit end of the key in suitable molds, into which metal is poured to fill the tube, form the shoulder, and securely unite the tube with the key, and as more fully hereinafter described.
The blank for the key is cut as seen in Fig. 5 2, the stem end a somewhat narrower than the I. spindle Z) of the key, the bit 0 extending from the stem end and in the same plane. On the back of the stem portion is a notch, d, or any irregularity, there, or at some other point, for the engagement of the cast metal, as hereinafter described.
I construct a tube, 0, (see Fig. 3,) from thin sheet metal, preferably steel, bending the blank into tubular form, and so as to bring the two edges substantially parallel with each other, and distant from each other the thickness of the bit of the key-blank. The tubeis somewhat shorter than the length of the spindle, and so that the end of the blank will protrude through the tube. This tube is set onto the stem end over the bit 0, as seen in Fig. 4. Thus prepared, the key is placed in molds which correspond in shape to the finished bit end of the key, and as seen in Fig.
5. Then metal is poured into the mold, and flows through the tube into the recess f, to form i the shoulder g on the key, fill the tube, and close over the tube end, as at h, Fig. l, the blank being shown in that figure in broken lines. This operation firmly unites the sheet- 7o metal tube with the key, as if an integral part of it, and presents a steel or hard-wearing surface at all points where wear comes upon the stem.
The cost of the tubes is trifling, so that the expense of forming the stem is slightly, if any, more than that of casting the stem upon the blank.
I claim The herein-described improvement in doorkeys, consisting of the flat steel blank having a sheet-metal tube applied to the stem end, the shoulder formed, and the tube filled and united to the blank by cast metal, substantially as described.
JOHN H. SHAW.
Publications (1)
Publication Number | Publication Date |
---|---|
US309411A true US309411A (en) | 1884-12-16 |
Family
ID=2378575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US309411D Expired - Lifetime US309411A (en) | peters |
Country Status (1)
Country | Link |
---|---|
US (1) | US309411A (en) |
-
0
- US US309411D patent/US309411A/en not_active Expired - Lifetime
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