US123672A - Improvement - Google Patents
Improvement Download PDFInfo
- Publication number
- US123672A US123672A US123672DA US123672A US 123672 A US123672 A US 123672A US 123672D A US123672D A US 123672DA US 123672 A US123672 A US 123672A
- Authority
- US
- United States
- Prior art keywords
- wheel
- shaft
- ratchet
- rope
- borger
- 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 12
- 230000003028 elevating Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
- B66D3/14—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable lever operated
Definitions
- Figure l is an elevation
- Fig. 2 a partial section of my improved hoisting apparatus, the parts being in their proper relative positions for ordinary use.
- Figs. 3 and 4 show the same parts in the positions they assume when the rope becomesslackened by the accidental stoppage of the descending platform or other cause.
- My driving-pulley A instead of being keyed fast to the shaft B, revolves loosely upon it, except as it is connected thereto by a springpawl, O, which, engaging in a ratchet-wheel, 1), that is fast to said shaft, compels the rotation of the shaft and its attached winding-cylinder E when revolved in direction of the arrow, Figs. 1 and 2, as in the act of elevating the platform.
- a springpawl, O engaging in a ratchet-wheel, 1), that is fast to said shaft, compels the rotation of the shaft and its attached winding-cylinder E when revolved in direction of the arrow, Figs. 1 and 2, as in the act of elevating the platform.
- the weight of the platform communicated through the rope G, causes the, ratchet D to react against thepawl, so as to keep. these two members in gear.
- H is a gravitating pawl pivoted at h to the frame or other stationary object; and, when liberated by the slackening of the rope, engaging in a ratchet-wheel, I, attached to the shaft B or to the winding-cylinder E, and at all other times held out of gear with said wheel in consequence of its sheave J resting against the rope G.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
Description
P.'J. BORGER.. Improvement in Safety Device for Hoists. N0. 123
,672. Patented Feb. 13, 1872. Fig.2;
Ill
Fig.1,
AM. FHOTLPLITHOGRJPHIL m A Y/ 0550M Momm/ UNITED STATES PATENT OFFICE.
PETER J. BORGER, OF CINCINNATI, onro.
|MPROVEMENT.IN SAFETY DEVICES FOR HOISTS.
Specification forming part of Letters Patent No. 123,672, dated February 13, 1872.
I, PETER J. BORGER, of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improved Safety Device for Hoists, of which the following is a specification:
Nature and Objects of the Invention.
General Description with Reference to the Drawing.
Figure l is an elevation, and Fig. 2 a partial section of my improved hoisting apparatus, the parts being in their proper relative positions for ordinary use. Figs. 3 and 4 show the same parts in the positions they assume when the rope becomesslackened by the accidental stoppage of the descending platform or other cause.
My driving-pulley A, instead of being keyed fast to the shaft B, revolves loosely upon it, except as it is connected thereto by a springpawl, O, which, engaging in a ratchet-wheel, 1), that is fast to said shaft, compels the rotation of the shaft and its attached winding-cylinder E when revolved in direction of the arrow, Figs. 1 and 2, as in the act of elevating the platform. When revolved in the contrary direction, (see Figs. 3 and 4,) the weight of the platform, communicated through the rope G, causes the, ratchet D to react against thepawl, so as to keep. these two members in gear. H is a gravitating pawl pivoted at h to the frame or other stationary object; and, when liberated by the slackening of the rope, engaging in a ratchet-wheel, I, attached to the shaft B or to the winding-cylinder E, and at all other times held out of gear with said wheel in consequence of its sheave J resting against the rope G.
The instant that the rope G becomes slack-' ened from detention of the descending platform or other cause the gravitating pawl H drops into the ratchet-wheel J and instantly arrests the motion of the shaft B and its attachments, including the winding-cylinder E, and thereby prevents the uncoilin g of the rope.
In place of the driving-pulley A I may employ a cog-wheel.
I claim herein as new and of my invention- The combination of the loose driving-pulley or wheel A attached to shaft B by springpawl O and ratchet D, and the drum E and ratchet-wheel I keyed on said shaft with the gravitating pawl H, the whole constructed and arranged as herein shown and described, for the purposes specified.
In testimony of which invention I hereunto set my hand.
PETER J. BORGER. Witnesses:
GEO. H. KNIGHT, JAMES H. LAYMAN.
Publications (1)
Publication Number | Publication Date |
---|---|
US123672A true US123672A (en) | 1872-02-13 |
Family
ID=2193107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US123672D Expired - Lifetime US123672A (en) | Improvement |
Country Status (1)
Country | Link |
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US (1) | US123672A (en) |
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0
- US US123672D patent/US123672A/en not_active Expired - Lifetime
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