US79071A - Dexter head - Google Patents
Dexter head Download PDFInfo
- Publication number
- US79071A US79071A US79071DA US79071A US 79071 A US79071 A US 79071A US 79071D A US79071D A US 79071DA US 79071 A US79071 A US 79071A
- Authority
- US
- United States
- Prior art keywords
- dexter
- head
- levers
- pin
- lazy
- 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
- 102100000497 WDHD1 Human genes 0.000 description 2
- 101700081112 WDHD1 Proteins 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 230000023298 conjugation with cellular fusion Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000003028 elevating Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000021037 unidirectional conjugation Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
Definitions
- i Figure 2 is a ⁇ detail transverse section of the same taken on the plane of the line a: x, hg. 1.
- This invention relates to a new device for elevating. loads of silitabledescription, and consistsin the appli cation of a system of levers, known under the denomination. of lazy-tongs.
- articles can be elevated to considerable' heights with'the aid"of but nconsiderable motive-power.
- One of these central pivots,'e, or a continuation ofit, projecting through the slotted upright or upright's of the frame B, does or may serveas handle for the manipulation of.the apparatus.
- the handle c may be raised by suitable mechanism, either by mea-nsof arope or cord, e, which is wound around a windlass, f, or by other'suitable apparatus.
- the lazy-tongs C arranged to operate in connection with thc dcrrick A,Islotted frame B, the pulleys, cord e, and windlass f, as herein described, for the purpose specified.V i
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prostheses (AREA)
Description
avfz fait Q M N'PETERS. FHOTO-LITHOGRPHER, WASHINGTON, Dv C,
@im im Letters Patent No. 79,071,davted`une 23, 1868,
IMPROVED .HOISTING-APPARATUS.
tithe rlgetnflg etant fr in hp ratiec'#v zitmt :mt mating mi tt tigt time,
TO ALL WHOM ITMAY GONCERN: Y v
Be known that I, DEXTER HEAD, of`Med'usa, in the vcountyofAlbany, and lStnteof New York, have invented a' new and improved 'Hoisting-Apparntus; and- 1 do hereby declare that the following is a full, clear, and exact description thereof, which will-enable others skilled inv the artto makeland use the same, reference 4being had to the accompanying drawings., forming a partj-of this specification, in which-j- Figure 1 represents a side elevation, partly in section,` of. my improved hoisting-apparatus.
i Figure 2 is a `detail transverse section of the same taken on the plane of the line a: x, hg. 1.
Similar letters of reference indicate corresponding parts.
This invention relates to a new device for elevating. loads of silitabledescription, and consistsin the appli cation of a system of levers, known under the denomination. of lazy-tongs. By the use of this invention, articles can be elevated to considerable' heights with'the aid"of but nconsiderable motive-power.
in the drawing, representen crane or derricl, ofsuitable construction and of suitablesize. Freni it is suspended a frame, B, to which the upper levers, a ai, of the lazy-tongs C are, bymeans of a pin, b, pivoted.
The lazy-tongs'eonsist of ltwo sets of zigzag levers, pi-voted together in the mddleot their bars, as shown. One of these central pivots,'e, or a continuation ofit, projecting through the slotted upright or upright's of the frame B, does or may serveas handle for the manipulation of.the apparatus.
Y By moving this pin from the lower to the upper end oi' the slot, the whole system willfbc contracted, as in vfig. 1, as all levers will remain parallel to those elevated withthe pin, and as the pin e is brought nearer to the pin 6, the levers are brought thenvearerlto a horizontal position the nearer c is to b.
The opposite motion of the pin e causes. the levers to expand, as shown by red lines in fig. 1, and thus, by ra-isinxf:r the pin or h'andlec, the load suspended from the device willbe elevateduvhile it will be lowered when c is moved down. Y l
The distance through which the load is`moved Yis nsrmztny times greater than the space in `which c moves as there areijointed pairs of levers employed in the systeni C; consequently, the more such levers are connected, the larger will be the motion of the load in comparison .with -that ofl the handle e. l
The handle c may be raised by suitable mechanism, either by mea-nsof arope or cord, e, which is wound around a windlass, f, or by other'suitable apparatus. i i Y What I claim as new, and desire to Vsecure by Letters Patent, is
The lazy-tongs C, arranged to operate in connection with thc dcrrick A,Islotted frame B, the pulleys, cord e, and windlass f, as herein described, for the purpose specified.V i
The above specification of my invention signed by me, this'th day of April, 1868. l
DEXTER HEAD.'
Witnesses:
WM. F. NINAMARA, ALEX. FQ RoBEn'rs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US79071A true US79071A (en) | 1868-06-23 |
Family
ID=2148570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US79071D Expired - Lifetime US79071A (en) | Dexter head |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US79071A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694261A (en) * | 1995-11-20 | 1997-12-02 | Deal; Jerry L. | Diver's mirror |
-
0
- US US79071D patent/US79071A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694261A (en) * | 1995-11-20 | 1997-12-02 | Deal; Jerry L. | Diver's mirror |
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