US373285A - Elevator - Google Patents

Elevator Download PDF

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US373285A
US373285A US373285DA US373285A US 373285 A US373285 A US 373285A US 373285D A US373285D A US 373285DA US 373285 A US373285 A US 373285A
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dogs
car
lever
racks
rope
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/26Positively-acting devices, e.g. latches, knives

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  • PETERS Phnurulhagmplwr. wnshlngmm. C.
  • LVITAL GLINEAU a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Elevators, of which the following is a specication.
  • My 'invention relates to elevators; aud it consists in the means hereinafter described of preventing the elevator-car from falling when the lifting-r0pe is broken.
  • Figure l is an isometric view of an elevator-car provided with my improvement, showing one of the guide-standards, a part of two of the rackstandards, and two of the dogs;
  • Fig. 2 a vertical central section of the floor and floorframing of the car, of the upright at the left, and of parts of the guidestandards and of parts ofthe rack-,standards at the farther side of the car, the cross-bar and one of the up# rights being in elevation, and the dogs being represented as in engagement with the racks of the rack-standards3 Fig. 3, a side elevation of the car and vertical central sections of the guide-standards and of two ofthe rack-standards, the dogs being held out of engagement with the racks;
  • Fig. 2 a vertical central section of the floor and floorframing of the car, of the upright at the left, and of parts of the guidestandards and of parts ofthe rack-,standards at the farther side of the car, the cross-bar and one of the up# rights being in elevation, and the dogs being represented
  • the car A having the rectangular platform a, uprights a, ⁇ and cross-bar a2, connecting the upper ends of said upright's, is ofany ordinary construction, the car being guided by ⁇ vertical guide-standards B, arranged one at serial N. 236,403. (No moan.)
  • the dogs D D are connected in pairs by bars d d', as shown in Fig. 5,the dogs sliding in tubes secured in the platform a of the car below the floor ofthe saine, the tubes being slotted at e c to allow of the movement of the bars d d.
  • a spiral spring, F within one ofthe tubes E, these springs normally throwing the dogs outward and into engagement with vertica-l racks c', said racks being arranged one in each groove c.
  • the teethof the racks c' are sli-ghtly hooking upward, as shown, and the outer ends ofthe dogs D D are bent outward and downward and outwardly beveled upward, as shown at di d3 in Fig. 4, so that when the outer ends or points of the dogs are partially engaged with the racks c the weight of the car and the shape of the rack-teeth and dogs would draw the dogs still farther outward and prevent the descent of the car.
  • a iu the inner side of one of the uprights ct', below the floor of the platform, is journaled at g the double bell-crank lever G, said lever beingprovided at itslower end with two arms, g g2, the free ends of which are respectively above and below the fulcrum of said lever, as shown in Fig. 2, so that when the lever is turned upon its fulcrurn the inner ends of the arms g' g2 will be moved, the one nearer to and the other farther from the center of the car.
  • the upper arm, g' is connected by a rod, H, to the bar d of the dogs D, and the free end of the lower arm, g2, is connected by the rod H to the bar d', which unites the dogs D', so that moving the upper end of the long arm g3 of the bell-crank lever G inward will draw the dogs D D into the tubes E and out of engagement with the racks c', but not entirely out of the grooves c.
  • a5 secured to the under side of the cross-bar a2, is pivoted a bell-crank lever, l, the lower arm of which, z', is connected by a linlgz, to the upper end ofthe arm g3.of the lever G, and the other 'end of which lever I is connected by a loop, i3, to a hook, J, secured to the lower end of the lifting-rope (not shown) in the usual manner, the link i surrounding the cross-bar a2, and having an in- IOC- terior width just sufficient to allow it to move freely up and down on said cross-bar.
  • Thecoinbination of thecar provided with a platform, the rack-stamlards provided with racks, dogs sliding in said platform and connected in pairs, springs arranged between said pairs of dogs and thrusting the same outward, a lever pivoted on said car and provided wit-h two arms, the free ends of which are, respectively, above and below the fulcrum of said lever, rods connecting said arms with said pairs of dogs, respectively, said lever being provided with a third arm adapted to be connected to the lifting-rope of said car to draw and hold said dogs out of engagement with said racks when said rope is unbroken and to allow said dogs to engage said racks when said rope is broken, as and for the purpose specified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Description

(No Model.)
I' No. 371x2854 V. GLINEAU.
BLBvATo;
Patented Nov. 15, 1887.
'N. PETERS. Phnurulhagmplwr. wnshlngmm. C.
; ATENT rrrca,
`VITAL"GLINEAU, OF LWELL, MASSACHUSETTS.
eLEvAToa.
SPECIFICATION forming part of Letters PatentNo. 373,285, dated November l5, 1887.
Application led April 28, 1887.
T all whom it may concern: i
Be it known that LVITAL GLINEAU, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Elevators, of which the following is a specication.
My 'invention relates to elevators; aud it consists in the means hereinafter described of preventing the elevator-car from falling when the lifting-r0pe is broken.
In the accompanying drawings, Figure l is an isometric view of an elevator-car provided with my improvement, showing one of the guide-standards, a part of two of the rackstandards, and two of the dogs; Fig. 2, a vertical central section of the floor and floorframing of the car, of the upright at the left, and of parts of the guidestandards and of parts ofthe rack-,standards at the farther side of the car, the cross-bar and one of the up# rights being in elevation, and the dogs being represented as in engagement with the racks of the rack-standards3 Fig. 3, a side elevation of the car and vertical central sections of the guide-standards and of two ofthe rack-standards, the dogs being held out of engagement with the racks; Fig. 4, a side elevation of one of the tubes which contain the dogs and springs and a vertical section of the bars which connect the dogs in pairs; Fig. 5, a plan of the dogs, the bars which connect them, the springs which' operate them, and a horizontal central section of the tubes which contain the dogs and springs, and a plan of the lower part of the double bell-crank lever' and the connect- Aing-rods which connect the lower arms of said lever to the connecting-bars of the dogs.
The car A, having the rectangular platform a, uprights a,`and cross-bar a2, connecting the upper ends of said upright's, is ofany ordinary construction, the car being guided by `vertical guide-standards B, arranged one at serial N. 236,403. (No moan.)
D D', carried in the'platform of the car, the rack-standards serving, with the dogs, to guide the lower part of the car and to confine the car to a vertical path.
The dogs D D are connected in pairs by bars d d', as shown in Fig. 5,the dogs sliding in tubes secured in the platform a of the car below the floor ofthe saine, the tubes being slotted at e c to allow of the movement of the bars d d. Between each dog and a dog ofthe other pair is arranged a spiral spring, F, within one ofthe tubes E, these springs normally throwing the dogs outward and into engagement with vertica-l racks c', said racks being arranged one in each groove c. The teethof the racks c' are sli-ghtly hooking upward, as shown, and the outer ends ofthe dogs D D are bent outward and downward and outwardly beveled upward, as shown at di d3 in Fig. 4, so that when the outer ends or points of the dogs are partially engaged with the racks c the weight of the car and the shape of the rack-teeth and dogs would draw the dogs still farther outward and prevent the descent of the car. In a vertical groove, a", iu the inner side of one of the uprights ct', below the floor of the platform, is journaled at g the double bell-crank lever G, said lever beingprovided at itslower end with two arms, g g2, the free ends of which are respectively above and below the fulcrum of said lever, as shown in Fig. 2, so that when the lever is turned upon its fulcrurn the inner ends of the arms g' g2 will be moved, the one nearer to and the other farther from the center of the car. The upper arm, g', is connected by a rod, H, to the bar d of the dogs D, and the free end of the lower arm, g2, is connected by the rod H to the bar d', which unites the dogs D', so that moving the upper end of the long arm g3 of the bell-crank lever G inward will draw the dogs D D into the tubes E and out of engagement with the racks c', but not entirely out of the grooves c.
To a bracket, a5, secured to the under side of the cross-bar a2, is pivoted a bell-crank lever, l, the lower arm of which, z', is connected by a linlgz, to the upper end ofthe arm g3.of the lever G, and the other 'end of which lever I is connected by a loop, i3, to a hook, J, secured to the lower end of the lifting-rope (not shown) in the usual manner, the link i surrounding the cross-bar a2, and having an in- IOC- terior width just sufficient to allow it to move freely up and down on said cross-bar.
It is evident that when the lifting-rope is taut and unbroken the inner end of the lever I will be drawn up against the under side of the cross-bar a by the weight of the car; but when the lifting-rope is broken orsuddeuly slackened the springs F will throw the dogs and the bars d d outward and cause the upper end of the lever G to swing outward and draw the inner end of the lever I out of contact with the cross-bar a into the position shown in Fig. 2.
Vhen the ear is supported by the liftingrope, the dogs do not interfere with the descent of the ear, being held out ot' engagement, as above described; but the moment the rope breaks the dogs engage the racks and prevent the car from falling with a crash.
I claim as my invention--` l. Thecoinbination of thecar provided with a platform, the rack-stamlards provided with racks, dogs sliding in said platform and connected in pairs, springs arranged between said pairs of dogs and thrusting the same outward, a lever pivoted on said car and provided wit-h two arms, the free ends of which are, respectively, above and below the fulcrum of said lever, rods connecting said arms with said pairs of dogs, respectively, said lever being provided with a third arm adapted to be connected to the lifting-rope of said car to draw and hold said dogs out of engagement with said racks when said rope is unbroken and to allow said dogs to engage said racks when said rope is broken, as and for the purpose specified.
2. The combination of the car provided with a platform, the rack-standards provided with vertical grooves and with racks arranged in the deepest parts of said grooves, dogs sliding in said platform and connected in pairs and normally projecting into said grooves, springs arranged between said pairs of dogs and thrusting the same outward, a lever pivoted on said car and provided with two arms, the free ends of which are, respectively, above and below the fulcrum of said lever, rods connecting said arms with said pairs of dogs, respectively, said lever being provided with a third arm adapted to be connected to the lifting-rope of said ear to guide said car, to draw and hold said dogs out of engagement with said racks when said lifting-rope is unbroken, and to allow said dogs to engage said racks when said rope is broken, as and for the purpose specitied.
3. The combination of the car provided with a platform, the rack-standards provided with racks, parallel tubes secured in said platform and provided with lateral slots, dogs sliding in said tubes, bars. connecting said dogs in pairs through said slots, springs arranged in said tubes, a spring between each dog and a dog of the other pair and thrusting said dogs outward, a lever pivoted on said car and provided with two arms, the free ends of which are, respectively, above and below the fulcrum of said lever, rods connecting said arms with the respective bars which connect said dogs in pairs, said lever being provided with a third arm adapted to bc connected to the liftingrope of said car, as and for the purpose specified.
In witness whereof I have hereunto set my hand, in presence oftwo subscribing witnesses, this 20th day of April, A. D. 1887.
virAL GLtNEAU.
Vitnesses:
ALBERT M. MOORE, Jol-IN WYMAN.
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