US197369A - X i improvement - Google Patents
X i improvement Download PDFInfo
- Publication number
- US197369A US197369A US197369DA US197369A US 197369 A US197369 A US 197369A US 197369D A US197369D A US 197369DA US 197369 A US197369 A US 197369A
- Authority
- US
- United States
- Prior art keywords
- plate
- neck
- ball
- instrument
- head
- 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
- 238000010276 construction Methods 0.000 description 1
Images
Classifications
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- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
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- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17017—Self-centering of floating
- Y10T279/17025—Radially reciprocating jaws
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- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17042—Lost motion
Definitions
- Figure l of the drawings is a representa ⁇ tion of a top view of my improvedatripod-head, and Fig. 2 is avertical central sectionof the same.
- This invention has relation to improvements in tripod-heads for transits, levels, theodolites, and other instruments for surveying,engineer ing, and astronomical purposes.
- the object of the invention is to devi-se a tripod-head ofsuch a construction that itmay be leveled with absolute accuracyand expedition, and may be adjusted horizontally for bringing the center of the instrument over a fixed point on lthe ground, whatever be the nature of the same or its inclination.
- the letter A designates 4the base-plate kof my improved tripodhead, having a large central circular opening
- B represents the carrier-plate, upon which the upper part of the head is supported.
- This plate has acentral opening, b,- of circular form, of
- C represents a socket-plate having a short central neck, c, in which the concave bearingsurface c ofthe lowerball-andsocket joint isformed. This plate is passed'from below inside of the iiange a, and its neck thrust through the openings a b of the base-plate 'and of the carrier-plate,
- the diameter ofthe neckc and of v the orifice b of the plate B are the same, and the neck fits snuglyiu theV said orifice.
- the ball D ofthe lower socket-joint is passed up through 4 ⁇ the neck, and its ⁇ projecting screw-threaded jFoRjslj-nvrvme l-NsTRuMEINTs 369, dated November 240,V plication termed i I@mi @through the 'leveling-saw 1pm@ E. n
- the leveling-screwplateE-ha a-large'central opening, j, and .onitsupperface is provi'dedwithfa convex'aniiult i ⁇ g, which is re,- reeived inland accurately 'iits n concavejsocket', 'h',upo1'i the underside of l the'pl'ate Llaioresa'id.
- the convex annulus g and the socket h form the upper ball-and-socket joint of my improved head for tripods, and their curved surfaces and those of the lower ball-and-socket joint are concentric 5 consequently, while the levelingscrew plate is motionless, the instrument-plate F has free universal movement upon'the lower ball-and-socket joint c D, in the ball of which the 'centers oi' the curved surfaces of both the upper and .lower jointsare coincident.
- the plummet By sliding the carrier-plate A horizontally the plummet may be brought directly over the fixed point on the ground with great accuracy and expedition, thus bringing the center of the i instrument and the said iixed point in the same -vertical line.
- a tripod-head having a ball-and-socket v joint for the base-plate, in combination with the instrument-plate F, having a spherical bearing, g h, concentric with said ball-and-socket joint, and leveling-plate E, substantially as speciiied.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Description
. D. HOFFMAN.
Tripod-Head for Surveying Instruments. No. 197,369.
Patented Nov. 20, i877.
l I n WITNESSES I' NVEVNTOR ATTORN EY 'T0 all-.whomtimer/90mm! 1 r' B it"known" that Ii; DANIEL* HOFFMAN;- Of renacer-)hannekeeountyofrhiiadeiphiaana State ofV Pennsylvania, havefinvent'ed alnew and; .valuable I'Impmvement in Tripod-Heads; and I do hereby declare that the following is a full, clear, andexactdescriptionfof-theconstruction and oprationof "ther same, reference being had to the annexed drawings, making a part of this specication, and to the letters and figures oi' reference marked thereon.
Figure l of the drawings is a representa` tion of a top view of my improvedatripod-head, and Fig. 2 is avertical central sectionof the same.
This invention has relation to improvements in tripod-heads for transits, levels, theodolites, and other instruments for surveying,engineer ing, and astronomical purposes. f The object of the invention is to devi-se a tripod-head ofsuch a construction that itmay be leveled with absolute accuracyand expedition, and may be adjusted horizontally for bringing the center of the instrument over a fixed point on lthe ground, whatever be the nature of the same or its inclination.
" The nature of the invention will be readily yperceived from the following description, and
pointed out in theclaims appended thereto.
In the annexed drawings, the letter A designates 4the base-plate kof my improved tripodhead, having a large central circular opening,
j a, and 'a ilange, a', upon. its under side, provided with a coarse screw-thread upon its inner.:faceby means of which'the whole head is i j secured to the tripod.- i
B represents the carrier-plate, upon which the upper part of the head is supported. This plate has acentral opening, b,- of circular form, of
, less diameter than the opening aiof plate A. C represents a socket-plate having a short central neck, c, in which the concave bearingsurface c ofthe lowerball-andsocket joint isformed. This plate is passed'from below inside of the iiange a, and its neck thrust through the openings a b of the base-plate 'and of the carrier-plate,
respectively.- The diameter ofthe neckc and of v the orifice b of the plate B are the same, and the neck fits snuglyiu theV said orifice. The ball D ofthe lower socket-joint is passed up through 4 `the neck, and its` projecting screw-threaded jFoRjslj-nvrvme l-NsTRuMEINTs 369, dated November 240,V plicationiiled i I@mi @through the 'leveling-saw 1pm@ E. n
isthen screwedlinto the lower end 'of the neck '0, projecting downward from th ,plate F, to which theinstrument is directl attached.I
" The leveling-screwplateE-ha" a-large'central opening, j, and .onitsupperface is provi'dedwithfa convex'aniiult i`g, which is re,- reeived inland accurately 'iits n concavejsocket', 'h',upo1'i the underside of l the'pl'ate Llaioresa'id. When the end d is screwed into-the neck c aforesaid, the parts of the tripod-head are coupled together. u
The convex annulus g and the socket h form the upper ball-and-socket joint of my improved head for tripods, and their curved surfaces and those of the lower ball-and-socket joint are concentric 5 consequently, while the levelingscrew plate is motionless, the instrument-plate F has free universal movement upon'the lower ball-and-socket joint c D, in the ball of which the 'centers oi' the curved surfaces of both the upper and .lower jointsare coincident. The,
neck e of the instrument-plate and that of the ball, as aforesaid, are connected together, and the axial line of the former, if extended, would pass through the center of the latter; consequently, when the said plate is level and the instrument properly secured thereon, thecenter of latter must be in line with the longitudinal axis ofthe neck and the center of the ball, and the plummet-line in the vertical prolongation of the said axis. i
By sliding the carrier-plate A horizontally the plummet may be brought directly over the fixed point on the ground with great accuracy and expedition, thus bringing the center of the i instrument and the said iixed point in the same -vertical line.
By setting up the leveling-screws G the level thus obtained and the adjustment of the center of the instrument over the iixed point on the ground may be preserved for any length of' time, whatever be the nature of the ground.
',These leveling-screws extend through long screw-threaded nuts I, rigidly secured to the plateE,exactlyatrightangles thereto,andtheir lower ends bear upon the plate B, as shown; consequently they are notliable to become jammed in their bearings, to lose their posi= tion with reference to plate E, nor to interfere with the base-plate. .y Y
I operate the head as follows to obtain a level position for the instrument and bring its center in the vertical line of the fixed point on the ground: I loosen any two of the levelingscrews which may be convenient, (about one half-turn will be suicient,) thereby letting down plate C suiciently to clear it from the base-plate, and permitting the carrier-plate B to be shifted in any direction horizontally, carrying the leveling-plate, the upper and lower ball-and-socket j oints, and the instrument-plate with it, until the instrument on the head is centered over the fixed point on the ground. This being accomplished, I level the instrument approximately by hand, and exactly by setting up the two levelingscrews aforesaid, as may be requisite. This causes the ball and sockets to bind tightly upon each, and produces the desired result.
What I claim as new, and desire to secure by Letters Patent, is-
1. The combination, with the plate A, hav
ing central opening a, and the plate C, having v the socket c' extending through said opening,
of the ball D, having threaded; neck d, the lei cling-screw plate E, having balll,g,fand theinstrument-plate F, having neck c and socket h, substantially as specified.
2. The combination, with the base-plate A, having central opening a,and.tl1lesocketplate C, having neck c, of the carrying-plate B,hav ing aperture b, fitting said neck, and the leveling mechanism of a tripod-head, substantially as speciiied.
3. A tripod-head having a ball-and-socket v joint for the base-plate, in combination with the instrument-plate F, having a spherical bearing, g h, concentric with said ball-and-socket joint, and leveling-plate E, substantially as speciiied. y, A
In testimony that I claim theabove I have hereunto subscribed my namein vthe presence of two witnesses.
DANIEL HOFFMAN.
Witnesses: l 4
ALLEN H. GANGEWR, i' H. C. BRICK. y
t@ w 9J .fr
Publications (1)
Publication Number | Publication Date |
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US197369A true US197369A (en) | 1877-11-20 |
Family
ID=2266775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US197369D Expired - Lifetime US197369A (en) | X i improvement |
Country Status (1)
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643844A (en) * | 1948-07-12 | 1953-06-30 | Henry C Nette | Vernier control and pivot mounting for transits and like instruments |
US4277171A (en) * | 1978-05-31 | 1981-07-07 | Tokyo Kogaku Kakai Kabushiki Kaisha | Base board device for measuring instruments |
US4950126A (en) * | 1988-04-05 | 1990-08-21 | Kestrel International, Ltd. | Movie equipment dolly |
DE4024557A1 (en) * | 1990-08-02 | 1992-02-06 | Heidenhain Gmbh Dr Johannes | Adjustment arrangement for table w.r.t base body - has adjustment elements arranged concentrically about centre of table, acting tangentially to spherical bearing |
US20150240988A1 (en) * | 2014-02-08 | 2015-08-27 | Franklin B. White | Theft resistant upstanding mount for temporary positioning of costly equipment at unattended outdoor locations |
US20150292226A1 (en) * | 2014-02-08 | 2015-10-15 | Franklin B. White | Theft resistant upstanding mount for temporary positioning of costly equipment at unattended outdoor locations |
-
0
- US US197369D patent/US197369A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643844A (en) * | 1948-07-12 | 1953-06-30 | Henry C Nette | Vernier control and pivot mounting for transits and like instruments |
US4277171A (en) * | 1978-05-31 | 1981-07-07 | Tokyo Kogaku Kakai Kabushiki Kaisha | Base board device for measuring instruments |
US4950126A (en) * | 1988-04-05 | 1990-08-21 | Kestrel International, Ltd. | Movie equipment dolly |
DE4024557A1 (en) * | 1990-08-02 | 1992-02-06 | Heidenhain Gmbh Dr Johannes | Adjustment arrangement for table w.r.t base body - has adjustment elements arranged concentrically about centre of table, acting tangentially to spherical bearing |
US20150240988A1 (en) * | 2014-02-08 | 2015-08-27 | Franklin B. White | Theft resistant upstanding mount for temporary positioning of costly equipment at unattended outdoor locations |
US20150292226A1 (en) * | 2014-02-08 | 2015-10-15 | Franklin B. White | Theft resistant upstanding mount for temporary positioning of costly equipment at unattended outdoor locations |
US9534731B2 (en) * | 2014-02-08 | 2017-01-03 | Franklin B White | Theft resistant upstanding mount for temporary positioning of costly equipment at unattended outdoor locations |
US9637942B2 (en) * | 2014-02-08 | 2017-05-02 | Franklin B. White | Theft resistant upstanding mount for temporary positioning of costly equipment at unattended outdoor locations |
US9803794B2 (en) * | 2014-02-08 | 2017-10-31 | Franklin B White | Theft resistant upstanding mount for temporary support of costly equipment likely to be a target for theft |
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