US188727A - Improvement in hatchways - Google Patents

Improvement in hatchways Download PDF


Publication number
US188727A US188727DA US188727A US 188727 A US188727 A US 188727A US 188727D A US188727D A US 188727DA US 188727 A US188727 A US 188727A
United States
Prior art keywords
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
Application number
Publication date
Application granted granted Critical
Publication of US188727A publication Critical patent/US188727A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current




    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/04Door or gate operation of swinging doors


f -UNITED STATES ing of the hatches v Gall.
Specification forming part of Letters Patent N0. 188,727, dated March 27, 1877; application filed October 24, 1876.
To all whom 'it may concern` l Be it known that I, GEOEGE N. CEEAMEE, of thel city of Philadelphia and State of Penu- -sylvania, have made certain new and useful Improvements in Mechanism for Opening and Ulosing Hatches Automatically by the Car or Elevator in its Ascent and Descent; and l do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, mak'- ing part thereof, in which- Figure l is a vertical cross-section, showing the hatches partly open. Fig. 2 isa vertical cross-section lengthwise of the hatches.
lrhe object of my invention is to provide for the certain and positive opening and clos- I on the various doors of buildings, and that without any possibility of their slamming; and it consists in certain double cams attached vto the car, in which the ends of the levers which operate the doors traverse, and hinged projections on the doors, with which pins or projections on the car engage, thus insuring a positive closing of the door by the descent of the car.
Referring to the drawings, A is the car or elevator; B B, the hatchesor trap-doors. C C' O C' are double cams on the back of the D D' are bell-crank or elbowed levers, which are pivoted to upright posts, or to the wall at their elbows, one end of which is provided with pins or friction-rollers E hl', which travel in the double cams OC' C C'. GG' are rods, jointed at their upper ends to the bellcrank levers D D', andiat their lower ends to Vthe short arms H H', which are secured to the hatches.v To the outer and under sides of the hatches are secured hinged catches I I, which fold upward, and permits the car in its ascent to have a free passage. Pins or projections K K' are attached to the upper rear edge or side of the car, which engage with the catches I I when the car is descending, and drag or pull the free ends of the hatches onto the top of the car, and by which they are gradually closed.
The operation of my device is as follows: The top of the car iu its upward movement lifts or opens the doors, leaving the inner ends of the bell-crank levers in such position that the friction-rollers 011 the ends thereof` will come in contact or enter the double cams, which act as a brake, to ease the closing of the hatches. The cams on the car in its downward movement act on the bell-crank levers and force their inner ends down into nearly a horizontal position, thus opening the hatches, and, as the car descends, the edges of said hatches are drawn down by the catches and pins, so as to rest on the top of the car, and are thereby gently closed.
Having thus described my invention, what I claim, and desire to secure by Letters Patent, is.-
l. The combination of the car A, provided with the double cams C C' C C', with the bellcrank levers D D', friction-rollers E E', rods G G', and doors B B', the whole arranged to operate in the manner set forth, and for the purpose specified.
2. The combination of the hinged catch 0r levers I I with the pins or projections K K', when arranged to operate in the manner described and for the purpose set forth.
US188727D Improvement in hatchways Expired - Lifetime US188727A (en)

Publications (1)

Publication Number Publication Date
US188727A true US188727A (en) 1877-03-27



Family Applications (1)

Application Number Title Priority Date Filing Date
US188727D Expired - Lifetime US188727A (en) Improvement in hatchways

Country Status (1)

Country Link
US (1) US188727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060001059A1 (en) * 2004-07-01 2006-01-05 Chandra Mouli Transparent conductor based pinned photodiode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060001059A1 (en) * 2004-07-01 2006-01-05 Chandra Mouli Transparent conductor based pinned photodiode

Similar Documents

Publication Publication Date Title
US188727A (en) Improvement in hatchways
US431676A (en) Device for operating elevator-hatchway gates
US429932A (en) Elevator-hatchway gate
US676474A (en) Elevator-gate.
US810873A (en) Door for lifts.
US392546A (en) Hatchway
US538333A (en) Timothy lemond
US207572A (en) Improvement in hatchways
US582826A (en) Levi lwdquist
US613468A (en) Mechanism for actuating doors or gates of elevators
US279612A (en) Elevator-hatch
US265231A (en) Means for operating doors of elevator-shafts
US290326A (en) Automatic elevator-gate
US401273A (en) Elevator-hatch way
US411579A (en) Railroad-gate
US445433A (en) Automatic door and lock for elevators
US319292A (en) Automatic elevator-gate
US141171A (en) Improvement in self-closing hatchways
US147853A (en) Improvement in self-closing hatchways
US154977A (en) Improvement in self-closing hatchways
US340755A (en) Elevator-hatch way
US1160263A (en) Automatic elevator-guard.
US1213450A (en) Safety-latch for elevator-gates.
US256517A (en) Elevator
US475524A (en) Elevator