US170575A - Improvement in locks for sewing-machine covers - Google Patents
Improvement in locks for sewing-machine covers Download PDFInfo
- Publication number
- US170575A US170575A US170575DA US170575A US 170575 A US170575 A US 170575A US 170575D A US170575D A US 170575DA US 170575 A US170575 A US 170575A
- Authority
- US
- United States
- Prior art keywords
- lock
- sewing
- locks
- bolt
- 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
- 238000010276 construction Methods 0.000 description 6
- 230000001105 regulatory Effects 0.000 description 6
- 230000003292 diminished Effects 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 239000000789 fastener Substances 0.000 description 2
- 230000013707 sensory perception of sound Effects 0.000 description 2
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/44—Locks or fastenings for special use for furniture
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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
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5097—Cabinet
- Y10T70/5102—Projecting lug type
- Y10T70/5106—External catch
Definitions
- My lock combines simplicity, durability, and economy in its construction. It is particularly adapted for use upon sewing-machines, as a means of securing the cover of the machine to the table; but is applicable to many other purposes. It consists of five parts only, viz, front and back plates, bolt, cam, and attaching-screw, which not only secures the lock in position, but also holds its parts together, serves as a pivot for the bolt to turn upon, and as a means of regulating the action of the bolt, the ease of which may be increased or diminished by tightening or loosening the central screw.
- a shows the back plate of the lock, shown as having a flange, b, at its periphery, forming the edge of the lock-case.
- One or more projections, 0, may be made on the under side of this plate, to keep it in position when applied.
- the bolt pivoted at or near the center of the lock, forming a lever, engaging the staple j at its upper end, and at its lower end 0 engaging a cam, f, by which it is operated.
- This cam has hearings in the front and back plates of the lock, upon which it turns, and is provided with a keyhole, g, by which it 'is rotated to throw the lever-bolt d.
- the head ofthis screw not only has a bearing upon the plate h, but also a slight bearing upon the bolt d,-so that as it is tightened said bolt is pressed downward upon the bottom plate a. This enables .the action of the bolt to be regulated by increasing or diminishing the friction between the parts, and obviates the necessity of using springs.
- My lock may be applied by inserting it in the article upon which it is-used, so that their surfaces shall be flush; or it may be placed upon or above its surface; or its escutcheon or front plate h only may project, the manner of application depending on the purpose for which it is used. Its operation is simple and apparent.
Description
' UNITED STATES PATENT OFFICE.
JOHN B. LOGAN, OF BALTIMORE, MARYLAND.
IMPROVEMENT IN LOCKS FOR SEWING-MACHINE COVERS, &c.
Specification forming part of Letters Patent No. 170.575, dated November 30,1875; application filed April 30, 1875.
To all whom it may concern Be it known that I, J OHN B. LOGAN, of Baltimore, in the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in Locks; and do hereby declare that the following is afull, clear,-and exact description thereof, that will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specification, in Which Figure 1. shows a plan of my lock. Fig. 2 shows the lock with the face-plate removed; Fig. 3, section through a 1).
Same letters show like parts.
My lock combines simplicity, durability, and economy in its construction. It is particularly adapted for use upon sewing-machines, as a means of securing the cover of the machine to the table; but is applicable to many other purposes. It consists of five parts only, viz, front and back plates, bolt, cam, and attaching-screw, which not only secures the lock in position, but also holds its parts together, serves as a pivot for the bolt to turn upon, and as a means of regulating the action of the bolt, the ease of which may be increased or diminished by tightening or loosening the central screw.
Referring to the drawings, a shows the back plate of the lock, shown as having a flange, b, at its periphery, forming the edge of the lock-case. One or more projections, 0, may be made on the under side of this plate, to keep it in position when applied. At d is the bolt, pivoted at or near the center of the lock, forming a lever, engaging the staple j at its upper end, and at its lower end 0 engaging a cam, f, by which it is operated. This cam has hearings in the front and back plates of the lock, upon which it turns, and is provided with a keyhole, g, by which it 'is rotated to throw the lever-bolt d. At. It is shown the front plate of the lock, which also forms its escutcheon. An opening, 6, is made through both plates at and h, through which the staple j passes, and the flange 1) (before referred to) may, of course, be attached to either plate, as preferred. At 70 is shown a screw, passing through both plates at and h, the lever-bolt,
and into the article upon which the lock is used. This, as before stated, secures the lock to the article, holds its parts together, and
serves as a pivot for the bolt. The head ofthis screw not only has a bearing upon the plate h, but also a slight bearing upon the bolt d,-so that as it is tightened said bolt is pressed downward upon the bottom plate a. This enables .the action of the bolt to be regulated by increasing or diminishing the friction between the parts, and obviates the necessity of using springs.
My lock may be applied by inserting it in the article upon which it is-used, so that their surfaces shall be flush; or it may be placed upon or above its surface; or its escutcheon or front plate h only may project, the manner of application depending on the purpose for which it is used. Its operation is simple and apparent.
Ido not claim the devices shown in the patents of James Jones, September 3, 1846, nor William Patton, September 8, 1857, for sash holders and fasteners. My invention differs from these both in its construction and object. It relates to that class of locks in which the operative parts are inclosed in a lock-case, which caseis, in myinventioinformed by the escutcheon and back plate. It is especially designed for application to sewing-machines and like purposes, whereit is desired to unite elegance of finish with economy of construction.
What I claim as my invention, and desire to secure by Letters Patent, is' v In a lock, the combination of the back plate a and escutcheon-plate h, forming the lockcase, with the lever-bolt d, cam f, and screw 76, said screw forming the pivot of the lockbolt, uniting and holding in position the parts of the lock, securing it to the article upon which it is used, and regulating the action'of the bolt, substantially as specified.
In testimony that I claim the foregoing I have hereunto set my hand this 23d day of April, 1875.
JOHN B. LOGAN.
Witnesses:
J OHN M. TUCKER, HENRY B. HICKS.
Publications (1)
Publication Number | Publication Date |
---|---|
US170575A true US170575A (en) | 1875-11-30 |
Family
ID=2239982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US170575D Expired - Lifetime US170575A (en) | Improvement in locks for sewing-machine covers |
Country Status (1)
Country | Link |
---|---|
US (1) | US170575A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2423980A (en) * | 1945-05-22 | 1947-07-15 | John W K Jurrat | Latching device |
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0
- US US170575D patent/US170575A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2423980A (en) * | 1945-05-22 | 1947-07-15 | John W K Jurrat | Latching device |
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