US120997A - Improvement in curtain-fixtures - Google Patents
Improvement in curtain-fixtures Download PDFInfo
- Publication number
- US120997A US120997A US120997DA US120997A US 120997 A US120997 A US 120997A US 120997D A US120997D A US 120997DA US 120997 A US120997 A US 120997A
- Authority
- US
- United States
- Prior art keywords
- shade
- detent
- fixtures
- curtain
- 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
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
Definitions
- My invention relates to that class of curtainfixtures in which a coiled or spiral spring is used to raise the shade; and consists in providing the shaft of the shade-roller with a cam by which a detent is operated to stop the shade at each revolution in its upward movement, if required, the coiled spring having sufficient power to raise the shade when it is lifted quickly, by which the detent is released from the cam, but engages with it when it is moved upward slowly, and stopping it at the desired point, the cam raising the detent and allowing it to roll over it when the shade is pulled down.
- Figure 1 represents a longitudinal section of my improved shade roller.
- Fig. 2 represents a cross-section 011 line a b of Fig. 1.
- A represents the shade-roller, which is a hollow cylinder of wood or other suitable material.
- B is the shaft, upon which a coiled or spiral spring is moved, for the purpose of automatically raising the shade.
- the shaft B is provided with a cam, O.
- the detent D is contained in the chamber E on one side of the roller A.
- the detent D is represented as a short cylindrical piece of metal.
Description
P. w. PHILLIPS? Improvement in Curtain Fixtures.
No. 120,997. I Patented No .14,1s71.
IRRLUMMMA i m M6.
UNITED STATS PHINEAS W. PHILLIPS, OF SALEM, MASSACHUSETTS.
IMPROVEMENT IN CURTAIN-FIXTURES.
Specification forming part of Letters Patent No. 120,997, dated November 14, 1871 To all whom it may concern:
Be it known that I, PHINEAS W. PHILLIPS, of Salem, in the county of Essex and State of Massachusetts, have invented certain Improvement in Curtain-Fixtures, of which the following is a specification.
My invention relates to that class of curtainfixtures in which a coiled or spiral spring is used to raise the shade; and consists in providing the shaft of the shade-roller with a cam by which a detent is operated to stop the shade at each revolution in its upward movement, if required, the coiled spring having sufficient power to raise the shade when it is lifted quickly, by which the detent is released from the cam, but engages with it when it is moved upward slowly, and stopping it at the desired point, the cam raising the detent and allowing it to roll over it when the shade is pulled down.
In the drawing, Figure 1 represents a longitudinal section of my improved shade roller. Fig. 2 represents a cross-section 011 line a b of Fig. 1.
Similar letters of reference indicate like parts in both figures.
A represents the shade-roller, which is a hollow cylinder of wood or other suitable material. B is the shaft, upon which a coiled or spiral spring is moved, for the purpose of automatically raising the shade. The shaft B is provided with a cam, O. The detent D is contained in the chamber E on one side of the roller A. The detent D is represented as a short cylindrical piece of metal.
When the shade is pulled down the detent D rolls over the cam G, and the free rotation of the shade-roller is not interfered with. When the shade is raised slowly the detent drops into the space, and is held by the detent against the side of the chamber, stopping the roller. When the shade is raised quickly the centrifugal force keeps the detent out in the chamber and prevents it from engaging with the cam. The outer end of the shaft B is made to fit tightly into the bracket, so that it cannot revolve.
It is obvious that any required number of detents and chambers may be used, so that the rotation of the shaderoller may be stopped a greater number of times at each revolution of the roller.
I am aware of the Letters Patent granted to J abez Burns, No. 94,866, dated September 14, 1869; and D. W. DeForrest, No. 101,440, dated April 5, 187 0; in which devices are used having a similar object as my invention; these I do not claim.
I claim as my invention- In a shade-roller, the detent D, for the purpose of stopping the upward movement of the shade, as shown and described.
PHINEAS W. PHILLIPS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US120997A true US120997A (en) | 1871-11-14 |
Family
ID=2190441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US120997D Expired - Lifetime US120997A (en) | Improvement in curtain-fixtures |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US120997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060069705A1 (en) * | 2004-09-28 | 2006-03-30 | Casio Computer Co., Ltd. | Arithmetic processing device |
-
0
- US US120997D patent/US120997A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060069705A1 (en) * | 2004-09-28 | 2006-03-30 | Casio Computer Co., Ltd. | Arithmetic processing device |
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