US153688A - Improvement in self-closing hatchways - Google Patents
Improvement in self-closing hatchways Download PDFInfo
- Publication number
- US153688A US153688A US153688DA US153688A US 153688 A US153688 A US 153688A US 153688D A US153688D A US 153688DA US 153688 A US153688 A US 153688A
- Authority
- US
- United States
- Prior art keywords
- self
- improvement
- closing
- hatchways
- car
- 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
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 240000001439 Opuntia Species 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/04—Door or gate operation of swinging doors
Landscapes
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
c. r. STAPLES & I. L. HOLMES. Self- Closing Hatchways.
Patented Aug 4,1874.
HWY/760866- 154V 7710;
THE GRAPHIC CO. PHOTO'LITDL391 4| PARK PLACER Y UNITED STATES PATENT OFFICE.
CHARLES F. STAPLES AND IRVING L. HOLMES, OF BOSTON, MASS.
IMPROVEMENT IN SELF-CLOSING HATCHWAYS.
Specification forming part of Letters Patent No. 153,688, dated August 4, 1874 application filed May 27, 1874.
To all whom it may concern:
Be it known that we, CHARLES F. STAPLES and IRVING L. HOLMES, both of the city of Boston, county of Suffolk and State of Massachusetts, have invented Improvements in Mechanism for Opening and Closing Hatches, of which the following is a specification:
With reference to the accompanying drawings, Figure l is an elevation, illustrating the mechanism applied to the hatches in two floors, a and b. Fig. 2 is a plan. Fig. 3 is a perspective view, illustrating a modification in which the cam and lever operate in different vertical planes adapted to the requirements of different cases. Fig. 4. shows two views of a similar modification.
The hatches are located in the floors a b. The covers are marked 0. The covers when used with corner guideposts are divided, as in Fig. 2, diagonally to avoid interference with the posts in opening. The covers are hinged so as to close readily by their own weight, partially or wholly overhanging their hinges for that purpose. The elevator-car or hoisting cage or platform is marked cl, and may be operated in any usual manner. Over the hinges is pivoted or journaled a cam, 6, constructed with a groove or other suitable surface for winding the flexible connection f attached to the cover 0. This cam is provided with the counter-balance or lever g, whichnection f upon the cam e, and so lifting cover 0, thereby opening the hatch in advance of the descending car. As soon as the car passes the levers the covers are released ready to fall by their own weight when the car has passed them. Their closing may be aided by a spring, if desired. On the return or upward movement of the car it lifts the covers by contact from beneath.
We claim The combination of the lever g, eccentrically or cam shaped wheel or head 0, flexible connection f, and cover 0 with the car, cage, 01' platform d, substantially as described.
CHARLES F. STAPLES. IRVING L. HOLMES.
Witnesses:
D. N. B. OOFFIN, Jr., FRANK K. ROGERS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US153688A true US153688A (en) | 1874-08-04 |
Family
ID=2223099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US153688D Expired - Lifetime US153688A (en) | Improvement in self-closing hatchways |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US153688A (en) |
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0
- US US153688D patent/US153688A/en not_active Expired - Lifetime
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