US299544A - Half to frederick w - Google Patents
Half to frederick w Download PDFInfo
- Publication number
- US299544A US299544A US299544DA US299544A US 299544 A US299544 A US 299544A US 299544D A US299544D A US 299544DA US 299544 A US299544 A US 299544A
- Authority
- US
- United States
- Prior art keywords
- brake
- elevators
- governor
- elevator
- 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
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229940092174 Safe-Guard Drugs 0.000 description 4
- 239000002965 rope Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
Definitions
- Theobject of this improvement is to obtain security against the falling of elevator-cars by reason of other causes than the breaking of the hoisting-rope-such as may accrue from defects in or breakage of the machinery, whereby the car would be allowed to descend with such rapidity that the hoisting-rope could not slacken sufficiently to let the brake come into immediate action.
- Figure 1 is a front elevation partly in section.
- Fig. 2 is a top view in section, showing the position of the governor-frame and friction-gear, and mode of connection with the elevator-rod.
- Fig. 3 is a top view of the automatic safety-brake.
- Fig. 4 is a longitudinal section thereof.
- A represents the steel safety-brake, provided with an oval beveled hole at A, which iits over and clears the elevator-rod when the brake is in a horizontal position, as shown.
- B is a steel spring secured to the hoistingbeam by staples or eyebolts b and b, and curved in a manner to give forcible tension upon the brake A at its bearingend, which spring is provided with perpendicular side extensions, 1), which lap over the brake and hold the same securely in position.
- E represents a centrally-slotted piece affixed to the brake as a fulcrum for the bell-crank lever C, to the lower end of which is connected the sliding bar D, which slides in a correspondingly-sized aperture through the guide or stud D, which is bolted to the brake, as shown at d.
- H is a centrally-slotted piece affixed to the inner end of the brake A, and acts as a fu1- crum for the automatic trigger H, pivoted thereto, and which engage with the chain I, which connects thence through the lower eye of the rod J, with the brake A, acting upon the other side of the elevator-frame.
- Y is a projection from the hoistingbeam, which engages with the piece E, attached to the brake A, and arrests the upward motion of the brake when the power is applied to elevating the car.
- the opposite brake, A is arrested by a similar appliance.
- the steel brakes 5 A having oval slots beveled inwardly from below and provided with trigger H, bell-crank lever O, and sliding bar D, in combination with the chain l, springs 13, governor M, and
Description
(No Model.) V I 2 Sheets-Sheet 1.
0. A. HOPPNAGLE.
SAFE GUARD FOR ELEVATORS. No. 299,544. Patented June 3, 1884.
(No Model.) 2 Sheets-Sheet 2.
O. A; HOFPNAGLE.
SAFE GUARD FOR ELEVATORS.
No.-299,.544. 1 Patented June a, 1884.
, UNITED S ATES PATENT OFF CE.
CHARLES A. HOFFNAGLE, OF VERGENNES, VERMONT, ASSIGNOR OF ONE: HALF TO FREDERICK W. COE, OF SAME PLACE.
SAFEGUARD FOR ELEVATORS.
SPECIFICATION forming part of Letters Patent No. 299,544, dated June 3, 1884.
Application filed January 18, 1884. (No model.)
T0 at whom it may concern.-
Be it known that I, CHARLES A. HOFF- NAGLE, a citizen of the United States, residing at Vergennes, in the county of Addison and State of Vermont, have invented certain new and useful Improvements in Safety-Guards for Elevators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
Theobject of this improvement is to obtain security against the falling of elevator-cars by reason of other causes than the breaking of the hoisting-rope-such as may accrue from defects in or breakage of the machinery, whereby the car would be allowed to descend with such rapidity that the hoisting-rope could not slacken sufficiently to let the brake come into immediate action. These results are attained by the mechanism illustrated in the drawings, herewith filed as part hereof, in which the same letters of reference denote corresponding parts.
Figure 1 is a front elevation partly in section. Fig. 2 is a top view in section, showing the position of the governor-frame and friction-gear, and mode of connection with the elevator-rod. Fig. 3 is a top view of the automatic safety-brake. Fig. 4 is a longitudinal section thereof.
A represents the steel safety-brake, provided with an oval beveled hole at A, which iits over and clears the elevator-rod when the brake is in a horizontal position, as shown.
B is a steel spring secured to the hoistingbeam by staples or eyebolts b and b, and curved in a manner to give forcible tension upon the brake A at its bearingend, which spring is provided with perpendicular side extensions, 1), which lap over the brake and hold the same securely in position.
E represents a centrally-slotted piece affixed to the brake as a fulcrum for the bell-crank lever C, to the lower end of which is connected the sliding bar D, which slides in a correspondingly-sized aperture through the guide or stud D, which is bolted to the brake, as shown at d.
H is a centrally-slotted piece affixed to the inner end of the brake A, and acts as a fu1- crum for the automatic trigger H, pivoted thereto, and which engage with the chain I, which connects thence through the lower eye of the rod J, with the brake A, acting upon the other side of the elevator-frame.
J is a ring affixed to the upper eye of the rod J, for the attachment of the hoisting-rope outer end of which is secured the grooved friction-wheel S, which bears upon the elevatorrod T, and thereby receives motion from the same when the elevator-car is put in motion.
Y is a projection from the hoistingbeam, which engages with the piece E, attached to the brake A, and arrests the upward motion of the brake when the power is applied to elevating the car. The opposite brake, A, is arrested by a similar appliance.
The operation of the improvement isvery simple and easily understood. During ordinary motion of the elevatorcar the governor will move slowly, and will have no appreciable effect upon the parts to which it is connected;
but should any accident happen to disable the machinery so it could no longer hold the car in elevation or suspension, instantaneous velocity would be imparted to the governor through the friction-wheel S, and the governor would raise the lever L, and, by reason of its connection with the sliding bar D, through the rod L and bell-crank lever C, disconnect the same with the automatic trigger H, which would immediately release the connection of the brake A. with the chain I, and both the brakes would promptly clutch the rods T and arrest the farther progress of the car.
Having explained the construction and op- IOC eration of my improvement, what I claim as friction-wheel S, all constructed and arranged new, and desire to secure by Letters Patent, to operate substantially as specified. 1s
In a safeguard for elevators, the steel brakes 5 A, having oval slots beveled inwardly from below and provided with trigger H, bell-crank lever O, and sliding bar D, in combination with the chain l, springs 13, governor M, and
In testimony whereof I affix my signature in presence of two witnesses.
CHARLES A. HOFFNAGLE. Witnesses:
J GEN D. SMITH, ELEOTA S. SMITH.
Publications (1)
Publication Number | Publication Date |
---|---|
US299544A true US299544A (en) | 1884-06-03 |
Family
ID=2368724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US299544D Expired - Lifetime US299544A (en) | Half to frederick w |
Country Status (1)
Country | Link |
---|---|
US (1) | US299544A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707531A (en) * | 1954-03-30 | 1955-05-03 | Bartolomeo Nicola Di | Elevator safety brake |
US2944635A (en) * | 1957-10-11 | 1960-07-12 | Hawkeye Products Corp | Safety controls for elevators |
US2945561A (en) * | 1959-06-01 | 1960-07-19 | Universal Mfg Co | Elevator overspeed brake |
US20050055881A1 (en) * | 2003-09-11 | 2005-03-17 | Gann Richard John | Simultaneously operating self balanced hung window |
-
0
- US US299544D patent/US299544A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707531A (en) * | 1954-03-30 | 1955-05-03 | Bartolomeo Nicola Di | Elevator safety brake |
US2944635A (en) * | 1957-10-11 | 1960-07-12 | Hawkeye Products Corp | Safety controls for elevators |
US2945561A (en) * | 1959-06-01 | 1960-07-19 | Universal Mfg Co | Elevator overspeed brake |
US20050055881A1 (en) * | 2003-09-11 | 2005-03-17 | Gann Richard John | Simultaneously operating self balanced hung window |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US299544A (en) | Half to frederick w | |
US505289A (en) | Safety-catch for elevators | |
US143944A (en) | Improvement in elevators | |
US311279A (en) | bakee | |
US605820A (en) | Island | |
US186241A (en) | Improvement in safety-checks for elevators | |
US652118A (en) | Safety attachment for elevators. | |
US870084A (en) | Safety appliance for elevators. | |
US120676A (en) | Improvement in elevators | |
US639241A (en) | Elevator. | |
USRE4271E (en) | Improvement in hoisting apparatus | |
US175582A (en) | Improvement in elevators | |
US612261A (en) | Freight and passenger elevator | |
US256013A (en) | Steeet | |
US476289A (en) | matthews | |
US439081A (en) | Safety device for elevators | |
US797935A (en) | Safety device for elevators. | |
US751328A (en) | Safety-catch for elevators | |
US143971A (en) | Improvement in steam elevators | |
US248150A (en) | Safety device for elevators | |
US534382A (en) | Elevator | |
US595786A (en) | Elevator safety | |
US245676A (en) | Half to james e | |
US729344A (en) | Elevator safety device. | |
US592772A (en) | Safety-catch for elevators |