US84496A - John kennedy - Google Patents
John kennedy Download PDFInfo
- Publication number
- US84496A US84496A US84496DA US84496A US 84496 A US84496 A US 84496A US 84496D A US84496D A US 84496DA US 84496 A US84496 A US 84496A
- Authority
- US
- United States
- Prior art keywords
- wheel
- rope
- band
- pawl
- drum
- 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
- 239000002965 rope Substances 0.000 description 24
- 238000010276 construction Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
- F16D49/10—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees mechanically actuated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20207—Multiple controlling elements for single controlled element
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20636—Detents
- Y10T74/20714—Lever carried rack
Definitions
- Figure 2 an elevation of the same, taken transversely to iig. l.
- Figure 3 an elevation of the cross-tree, removed from the frame of the machine.
- the present invention relates to an improvement in the means for reversing the motion of the drum which sustains the ropes of the platform, and holding it in a fixed position;
- a A represent the upper frame-Work of an ordinary hoisting-machine, the sections connecting the storiesbel'ow having any well-known construction, and thereforeneeding no desoliption.
- the drum-shaft G on which the ropes that sustain the platform are wound, supports a drive-wheel, F, and friction-Wheel E, the former wheel being operated in the usual manner by a rope which passes over the wheel and down to the lower story, and the latter wheel being used to control the motion of the drum G, as hereinafter shown.
- a two-part band, H J are pivoted to a short journal, I, supported by one side of the frame A, and the lower end of the part H is brought round to the under part of the wheel E, and fastened to racklever, N, at K, by a pivot-bolt, and the part J is brought round to the same level-,and pivoted to it at L.
- This band', H J is ⁇ made of metal, or other suitable material, and it will operate better if it has spring enough to entirely relieve the wheel 'E of friction when the drum-shaft G is to turn.
- the lever N is pivoted at M to a short journal, supported by the ame A, and it has notches in one edge, in which the end of a pawl, P, looks, as shown at fig. 1, and an eye at its lower end, to which a rope, Z, is fastened.
- This pawl is made of iron, and. pivoted at R to the frame-work A, iig. 2, and it has a cord and Weight, U V, attached to it, at T, to overbalance the Weight of the rope b, attached to thel pawl .at the opposite end,
- a cross-tree, B is attached to one side of the frame Y A, and supports two blocks, 0, having pulleys, D D, over which ropes, Z W, pass, the rope Z extending down far enough to be conveniently reached -by the operator on the platform or story below.
- One end of the rope W is attached to the lever N,
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
Description
M- @tease-w- JHN, KENNEDY, 0F CHICAGO. ILLINOIS.
Letters Patent No. 84,496, dated Decfmtlfrrl l, 1868.
HoIsTING-MACINE,
To all whom this 'ma/y concern:
Be it known that I, J OHN KENNEDY, of Chicago, in the county of 000k, and State of Illinois, have invented a new and useful Improvement in Hoisting-Machines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, and letters marked thereon, in which- Figure l is a sectional elevation of Amy invention as attached to a hoisting-machine.
Figure 2, an elevation of the same, taken transversely to iig. l.
Figure 3, an elevation of the cross-tree, removed from the frame of the machine.
The present invention relates to an improvement in the means for reversing the motion of the drum which sustains the ropes of the platform, and holding it in a fixed position; and
Its nature, in part, consists in the application of a two-part spring band, which passes over a wheel on the main drum, and is operated by a rack-lever, which is held in place, when the band is braking the wheel, by a weighted pawl, said leverbeing operated by ropes o r cords passing over pulleys pivoted tc a cross-tree.
To enable others to fully comprehend the construction and operation of my invention, I have marked like parts with similar letters, and will now give a. detailed description.
A A represent the upper frame-Work of an ordinary hoisting-machine, the sections connecting the storiesbel'ow having any well-known construction, and thereforeneeding no desoliption. f
The drum-shaft G, on which the ropes that sustain the platform are wound, supports a drive-wheel, F, and friction-Wheel E, the former wheel being operated in the usual manner by a rope which passes over the wheel and down to the lower story, and the latter wheel being used to control the motion of the drum G, as hereinafter shown.
The upper ends of a two-part band, H J, are pivoted to a short journal, I, supported by one side of the frame A, and the lower end of the part H is brought round to the under part of the wheel E, and fastened to racklever, N, at K, by a pivot-bolt, and the part J is brought round to the same level-,and pivoted to it at L.
This band', H J, is `made of metal, or other suitable material, and it will operate better if it has spring enough to entirely relieve the wheel 'E of friction when the drum-shaft G is to turn.
The lever N is pivoted at M to a short journal, supported by the ame A, and it has notches in one edge, in which the end of a pawl, P, looks, as shown at fig. 1, and an eye at its lower end, to which a rope, Z, is fastened.
This pawl is made of iron, and. pivoted at R to the frame-work A, iig. 2, and it has a cord and Weight, U V, attached to it, at T, to overbalance the Weight of the rope b, attached to thel pawl .at the opposite end,
and used to put it in gear wth'the rack-lever N.
A cross-tree, B, is attached to one side of the frame Y A, and supports two blocks, 0, having pulleys, D D, over which ropes, Z W, pass, the rope Z extending down far enough to be conveniently reached -by the operator on the platform or story below.
One end of the rope W is attached to the lever N,
' and the other end has a weight fastened to it, for the purpose of carrying said leverbackward, and loosening the band H 'J on the friction-wheel E.
Operation. To stop the motion of the drum-shaft Gr, draw on the rope Z, and bring the lever N forward, as shown at g.'
l; then draw on the rope b, and bring the pawl P into position, as shown at same figure. This operation will set the band H J closely against the periphery of the friction-wheel E, and hold it in position, without in any manner 'strainin g the shaft on which the Wheel runs, as the pressure is concentrated.
To loosen the band H J on the friction-Wheel E, draw on rope Z. This operation will loosen the pawl P, and thus permitthe weight c to carry'the same out JOHN KENNEDY. Witnesses:
A. HAYWARD, J As. NORQUET.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US84496A true US84496A (en) | 1868-12-01 |
Family
ID=2153986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US84496D Expired - Lifetime US84496A (en) | John kennedy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US84496A (en) |
-
0
- US US84496D patent/US84496A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US84496A (en) | John kennedy | |
| US25169A (en) | Shipper-gear for pulleys | |
| US249847A (en) | Eanald macdonald | |
| US82799A (en) | canfield | |
| US100651A (en) | Improvement in safety-mechanism for hoisting-apparatus | |
| US90481A (en) | Improved friction-clutch | |
| US67249A (en) | Improvement in machines for packing flour | |
| US462501A (en) | Hoisting block and tackle | |
| US75169A (en) | Richard kitson | |
| US120676A (en) | Improvement in elevators | |
| US232614A (en) | Stu m p- extr acto r | |
| US121131A (en) | Improvement in let-off mechanisms for looms | |
| US195124A (en) | Improvement in brakes for elevators | |
| US311504A (en) | Volney w | |
| USRE3200E (en) | Improved triction-pawl | |
| US72881A (en) | Duncan morrison | |
| US302490A (en) | Elevator | |
| US309002A (en) | Island | |
| US84632A (en) | Moritz laemmel | |
| US57316A (en) | Improved block-and-tackle check | |
| US63602A (en) | Of honeoye falls | |
| US207291A (en) | Improvement in elevator-brakes | |
| US88655A (en) | Improvement in sled-brakes | |
| US425699A (en) | Hoist | |
| US97487A (en) | Improved hoisting-apparatus |