US30706A - van vlbck - Google Patents
van vlbck Download PDFInfo
- Publication number
- US30706A US30706A US30706DA US30706A US 30706 A US30706 A US 30706A US 30706D A US30706D A US 30706DA US 30706 A US30706 A US 30706A
- Authority
- US
- United States
- Prior art keywords
- bolt
- hemisphere
- seat
- treadle
- van
- 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
- 230000000717 retained Effects 0.000 description 12
- 238000010276 construction Methods 0.000 description 4
- 230000000994 depressed Effects 0.000 description 4
- 230000000881 depressing Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
- A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
Definitions
- the drawing represents a vertical central section of this invention.
- My invention consists in the arrangement of a longitudinally sliding bolt in combination with the seat of a chairv and with two hemispheres one working inside the other in such a manner that by depressing said bolt the seat of the chair may be retained in any desired position, whether horizontal or inclined; also in the combination with said longitudinally sliding bolt and with the two hemispheres of two toggle arms acting on the head of the bolt and acted upon by al treadle in such a manner, that by depressing the treadle the two hemispheres are locked and the seat retained in its position.
- the seat A, of the chair is fastened to the upper vsurface of the hemisphere B, which is provided with a flange a, by means of screws Z).
- the hemisphere B tits into the top end of the foot or stand O, said top end being hollowed out so as to form a socket D, and in the center of the upper surface of the hemisphere B, a socket E, is formed which receives the hemisphere F.
- a bolt G which is firmly secured in the hemisphere F, passes through a conical recess c, in the hemisphere B, and through a central opening in the stand down near to the ground, and the recess c, in the hemisphere B, is of such a size and it is so formed, that said hemisphere is at libert-y to move in the socket D, without coming in contact with the bolt G.
- the two hemispheres By exerting a slight pressure in a downward direction on the bolt G, the two hemispheres are kept down in their respective sockets and the hemisphere B, with the seat can be brought in a horizontal or in an inclined position as may be desired, while the hemisphere F, always retains its horizontal position and serves to keep the hemisphere B, down in its socket. But it' a strong pressure is exerted on the bolt G, the two hemispheres are firmly wedged down into their sockets, and the seat with the hemisphere B, is retained in the position, into which it may have been brought before the pressure on the bolt is applied.
- a longitudinal sliding motion is imparted to the bolt G, by means of two pairs of toggle arms H, which are inserted into a cavity d, in the bottom end of the stand or foot C.
- the top ends of these toggle arms are retained by notches e, in a metal plate f, that is screwed to the top of the cavity d, and the bottom ends of said ltoggle arms rest in grooves g, on the inner side of the head of the bolt G.
- the length of the toggle arms H, in relation to the bolt is so adjusted that, if no strain is exerted on the bolt leaving the hemisphere B, with the seat- A, free to be brought in any desired position, the centers of said toggle arms are slightly thrown out of straight lines drawn through their ends as clearly shown in the drawing.
- the toggle arms H pass through aslot h, in the treadle I, which works in slots z', j in the lower end of the stand O, being retained in its place by a plate 7c, catching into a groove in the end of the treadle.
- the backs of the toggle arms are slightly curved and the length of the slot z. in the treadle is so adjusted, that the same, when the treadle is raised to the position shown in the drawing, leaves the centers of the toggle arms free to recede from the bolt, so as to exert no pressure on the hemispheres B, and F.
Landscapes
- Special Chairs (AREA)
Description
UNITED STATES PATENT OFFICE.
V. VAN VLEGK, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND RALPH LOOKVVOOD, OF
NEWv YORK, N. Y.
DENTAL CHAIR.
Specification of Letters` Patent No. 30,706, dated November 20, 1860.
To all whom it may concern:
`Be it known that I, V. VAN VLEoK, of the city, county, and State of New York, have invented a new and Improved Dental Chair; 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, forming a part of this specification.
The drawing represents a vertical central section of this invention.
My invention consists in the arrangement of a longitudinally sliding bolt in combination with the seat of a chairv and with two hemispheres one working inside the other in such a manner that by depressing said bolt the seat of the chair may be retained in any desired position, whether horizontal or inclined; also in the combination with said longitudinally sliding bolt and with the two hemispheres of two toggle arms acting on the head of the bolt and acted upon by al treadle in such a manner, that by depressing the treadle the two hemispheres are locked and the seat retained in its position.
To enable those skilled in the art to make and use my invention, I will proceed to describe its construction and operation with reference to the drawing.
The seat A, of the chair is fastened to the upper vsurface of the hemisphere B, which is provided with a flange a, by means of screws Z). The hemisphere B tits into the top end of the foot or stand O, said top end being hollowed out so as to form a socket D, and in the center of the upper surface of the hemisphere B, a socket E, is formed which receives the hemisphere F. A bolt G, which is firmly secured in the hemisphere F, passes through a conical recess c, in the hemisphere B, and through a central opening in the stand down near to the ground, and the recess c, in the hemisphere B, is of such a size and it is so formed, that said hemisphere is at libert-y to move in the socket D, without coming in contact with the bolt G.
By exerting a slight pressure in a downward direction on the bolt G, the two hemispheres are kept down in their respective sockets and the hemisphere B, with the seat can be brought in a horizontal or in an inclined position as may be desired, while the hemisphere F, always retains its horizontal position and serves to keep the hemisphere B, down in its socket. But it' a strong pressure is exerted on the bolt G, the two hemispheres are firmly wedged down into their sockets, and the seat with the hemisphere B, is retained in the position, into which it may have been brought before the pressure on the bolt is applied.
A longitudinal sliding motion is imparted to the bolt G, by means of two pairs of toggle arms H, which are inserted into a cavity d, in the bottom end of the stand or foot C. The top ends of these toggle arms are retained by notches e, in a metal plate f, that is screwed to the top of the cavity d, and the bottom ends of said ltoggle arms rest in grooves g, on the inner side of the head of the bolt G. The length of the toggle arms H, in relation to the bolt is so adjusted that, if no strain is exerted on the bolt leaving the hemisphere B, with the seat- A, free to be brought in any desired position, the centers of said toggle arms are slightly thrown out of straight lines drawn through their ends as clearly shown in the drawing. By forcing the center of the toggle arms in toward the bolt, their ends are forced apart and a pow* erful pressure in a longitudinal direction is exerted on the bolt Gr.
The toggle arms H, pass through aslot h, in the treadle I, which works in slots z', j in the lower end of the stand O, being retained in its place by a plate 7c, catching into a groove in the end of the treadle. The backs of the toggle arms are slightly curved and the length of the slot z. in the treadle is so adjusted, that the same, when the treadle is raised to the position shown in the drawing, leaves the centers of the toggle arms free to recede from the bolt, so as to exert no pressure on the hemispheres B, and F. But if the treadle is depressed, the ends of the slot h, in sliding down over the backs of the toggle arms, force the centers of the same in toward the bolt, and the pressure thereby exerted on the bolt causes the hemisphcres to be wedged down into their sockets thereby retaining the seat A, in the position, into which it may have been brought before the treadle is depressed.
By these means the operator has both his hands free to bring the patient into the `desired position and to hold him there until by a pressure of the foot on t-he treadle the seat is retained in the desired position.
The construction of this chair is very simple and cheap; both hemispheres B and F, and also the socket D, can be cast and and operating substantially in the manner secured in their placesY Without requiring and for the purpose herein set forth. any fitting and the Whole device is so easily 2. The arrangement of the toggle arms H, put together and adjusted, that it can be and slotted treadle I, in combination with 15 5 done With little loss of time. the bolt G, seat A, and hemispheres B, and Having thus fully described my inven- F, constructed and operating substantially tion what I claim as new and desire to seas and for the purpose specified.
cure by Letters Patent, is V. VAN VLECK.
l. The arrangement of the longitudinally Witnesses: 10 sliding bolt G in ycombination With the seat L. W. BENDR,
A, and hemispheres B, and F, constructed M. M. LIVINGSTON.
Publications (1)
Publication Number | Publication Date |
---|---|
US30706A true US30706A (en) | 1860-11-20 |
Family
ID=2100347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US30706D Expired - Lifetime US30706A (en) | van vlbck |
Country Status (1)
Country | Link |
---|---|
US (1) | US30706A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4454949A (en) * | 1982-04-16 | 1984-06-19 | Paul Flum Ideas, Inc. | Product merchandising display unit |
US4598946A (en) * | 1985-01-02 | 1986-07-08 | Collier-Kenworth Company | Rocking infant seat |
US4651883A (en) * | 1985-07-29 | 1987-03-24 | Leggett & Platt, Incorporated | Gravity feed pusher merchandiser |
US4757769A (en) * | 1987-07-27 | 1988-07-19 | Royston Corporation | Shelving unit |
US4768659A (en) * | 1987-06-04 | 1988-09-06 | Marlboro Marketing, Inc. | Merchandising shelf spacer assembly |
US5728049A (en) * | 1996-07-10 | 1998-03-17 | Alberts; Susan | Therapeutic seating apparatus |
US20050151404A1 (en) * | 2003-12-15 | 2005-07-14 | Be Aerospace, Inc. | Vehicle seating with arcuate motion support |
US20060238008A1 (en) * | 2005-04-08 | 2006-10-26 | Baranov Michael V | Chair for spinal deceases prevention and treatment |
US20090058156A1 (en) * | 2006-03-16 | 2009-03-05 | Sung Gil Gang | Chair which is used in waist enhancement |
US20090188410A1 (en) * | 2004-01-07 | 2009-07-30 | Billich Juergen | Dynamic seating device |
US20100259083A1 (en) * | 2009-04-13 | 2010-10-14 | Afshin Aminian | Dynamic orthopaedic chair |
US20100264711A1 (en) * | 2009-04-15 | 2010-10-21 | Joseph Nazari | Swivel and reclining chair |
US9265349B1 (en) * | 2014-03-16 | 2016-02-23 | Valerie Jensen | Multi-directional and side glider chair |
US9398811B1 (en) * | 2015-03-18 | 2016-07-26 | Krueger International, Inc. | Lounge chair |
US20160270541A1 (en) * | 2015-03-18 | 2016-09-22 | Krueger International, Inc. | Lounge chair |
US10632888B2 (en) * | 2017-11-30 | 2020-04-28 | Ford Global Technologies, Llc | Manual recline swivel mechanism |
-
0
- US US30706D patent/US30706A/en not_active Expired - Lifetime
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4454949A (en) * | 1982-04-16 | 1984-06-19 | Paul Flum Ideas, Inc. | Product merchandising display unit |
US4598946A (en) * | 1985-01-02 | 1986-07-08 | Collier-Kenworth Company | Rocking infant seat |
US4651883A (en) * | 1985-07-29 | 1987-03-24 | Leggett & Platt, Incorporated | Gravity feed pusher merchandiser |
US4768659A (en) * | 1987-06-04 | 1988-09-06 | Marlboro Marketing, Inc. | Merchandising shelf spacer assembly |
US4757769A (en) * | 1987-07-27 | 1988-07-19 | Royston Corporation | Shelving unit |
US5728049A (en) * | 1996-07-10 | 1998-03-17 | Alberts; Susan | Therapeutic seating apparatus |
US7303234B2 (en) | 2003-12-15 | 2007-12-04 | Be Aerospace, Inc. | Vehicle seating with arcuate motion support |
US7063386B2 (en) * | 2003-12-15 | 2006-06-20 | Be Aerospace, Inc. | Passenger seat with tilting seat bottom |
US7083234B2 (en) * | 2003-12-15 | 2006-08-01 | Be Aerospace, Inc. | Vehicle seating with arcuate motion support |
US20060261655A1 (en) * | 2003-12-15 | 2006-11-23 | Be Aerospace, Inc. | Vehicle seating with arcuate motion support |
US20050151404A1 (en) * | 2003-12-15 | 2005-07-14 | Be Aerospace, Inc. | Vehicle seating with arcuate motion support |
US20050179294A1 (en) * | 2003-12-15 | 2005-08-18 | Be Aerospace, Inc. | Passenger seat with tilting seat bottom |
US20090188410A1 (en) * | 2004-01-07 | 2009-07-30 | Billich Juergen | Dynamic seating device |
US20060238008A1 (en) * | 2005-04-08 | 2006-10-26 | Baranov Michael V | Chair for spinal deceases prevention and treatment |
US7789463B2 (en) * | 2006-03-16 | 2010-09-07 | Sung Gil Gang | Chair which is used in waist enhancement |
US20090058156A1 (en) * | 2006-03-16 | 2009-03-05 | Sung Gil Gang | Chair which is used in waist enhancement |
US20100259083A1 (en) * | 2009-04-13 | 2010-10-14 | Afshin Aminian | Dynamic orthopaedic chair |
US8231175B2 (en) * | 2009-04-13 | 2012-07-31 | Afshin Aminian | Dynamic orthopaedic chair |
US20100264711A1 (en) * | 2009-04-15 | 2010-10-21 | Joseph Nazari | Swivel and reclining chair |
US7938489B2 (en) * | 2009-04-15 | 2011-05-10 | Joseph Nazari | Swivel and reclining chair |
US9265349B1 (en) * | 2014-03-16 | 2016-02-23 | Valerie Jensen | Multi-directional and side glider chair |
US9398811B1 (en) * | 2015-03-18 | 2016-07-26 | Krueger International, Inc. | Lounge chair |
US20160270541A1 (en) * | 2015-03-18 | 2016-09-22 | Krueger International, Inc. | Lounge chair |
US9629465B2 (en) * | 2015-03-18 | 2017-04-25 | Krueger International, Inc. | Lounge chair |
US10632888B2 (en) * | 2017-11-30 | 2020-04-28 | Ford Global Technologies, Llc | Manual recline swivel mechanism |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US30706A (en) | van vlbck | |
US34794A (en) | Improvement in stump-extractors | |
US34063A (en) | Improvement in lifting-jacks | |
US260947A (en) | Device for leveling tables | |
US476082A (en) | Pump-handle | |
US27229A (en) | Last-holder | |
US50199A (en) | William w | |
US71220A (en) | Improved baby-walker | |
US995516A (en) | Press. | |
US118991A (en) | Improvement in tables and stands | |
US200131A (en) | Improvement in copying-presses | |
US35956A (en) | Improvement in truss-pads | |
US174107A (en) | Improvement in presses | |
US506200A (en) | aechee | |
US59457A (en) | Improved adjustable back for stools | |
US1137903A (en) | Dental chair. | |
US82542A (en) | Improved operating-chair | |
US232478A (en) | Ments | |
US120296A (en) | Improvement in ironing-tables | |
US1080911A (en) | Support for dress-forms. | |
US113763A (en) | Improvement in cheese-presses | |
US57980A (en) | Improved machine for forming lock-joints in sheet metal | |
US47540A (en) | Improvement in instruments for curing piles | |
US684797A (en) | Bath-tub leg. | |
US465816A (en) | Instrument for removing black-heads |