US168980A - Improvement in air-springs for cars - Google Patents
Improvement in air-springs for cars Download PDFInfo
- Publication number
- US168980A US168980A US168980DA US168980A US 168980 A US168980 A US 168980A US 168980D A US168980D A US 168980DA US 168980 A US168980 A US 168980A
- Authority
- US
- United States
- Prior art keywords
- vessel
- plunger
- air
- packing
- springs
- 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
- 239000007789 gas Substances 0.000 description 14
- 230000004048 modification Effects 0.000 description 6
- 238000006011 modification reaction Methods 0.000 description 6
- 230000000994 depressed Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019161 pantothenic acid Nutrition 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004636 vulcanized rubber Substances 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
Definitions
- A is a vessel, by preference of cylindrical form, and to the upper end of the vessel is secured a head, B, and to thelower end a base, B.
- a ledge for supporting an annular perforated plate, N, and between the latter and the head B is conined a packing-ring, H, which I prefer to make of vulcanized rubber, the perforations in the said plate N permitting the free access of the compressedl air in the cylinder to the packing.
- the opening in this packing-ring for receiving the plunger is largest in diameter above, and is tapered so as to bear at and near its lower edge only against the plunger.
- an annular recess, n In the under side of the packing-ring is an annular recess, n,'by preference of the angular shape shown, so that one side ot' the recess is vertical, or nearly so, and the other side inclined, the recess being directly above perforations in the plate N.
- a ring, G Within the cylinder, and bearing on the base B', is a ring, G, of rubber, which serves the twofold purpose of packing for. ⁇ insuring a tight joint between the said base and cylinder, and of a seat for the valve E, between which and the plate m within the cylinder intervenes a spring, I, the latter tending to maintain the valve in contact with its seat on the ring.
- the 'lhe device thus constructed is converted into a spring by charging it with compressed air or gases through an opening in the base by means of an air-pump or other suitable means.
- the gradual increase in the pressure oi' the spring can be regulated by varying the-diameter of the'plunger D in respect to that of the vessel and the amount of resistance by varying the pressure of air or gases in the cylinder A.
- the air in the vessel being under constant pressure, must maintain the packing H in forcible contact with the said plunger, and keep the latter perfectly air-tight, and as the compression of the air increases the tighter will be the joint produced by this packing.
- the spring is so constructed that the vessel can be charged with compressed air or gases through the plunger D, which is provided with a screw-cap, F, the removal of the latter exposing a central opening, S, which terminates below in a chamber, p', containing a spring-valve, p, the stem of which is guided by .a plate, L, secured to the bottom of the plunger, the valve closing the central openin g S, excepting when compressed air or gas'is being forced through the same into the vessel.
- Fig. 3 The modification shown in Fig. 3 is the same as that illustrated in Fig. 2, excepting that a foot-valve is arranged in the bottom of the vessel A.
- the vessel may he charged with compressed air or gas without the aid of a foot-valve, and in the manner illustrated in Fig. 4, in which an opening, w, extends from the top of the plunger, tirst vertically and then laterally.
- this opening communicates with the interior of the vessell below the packing, and hence can be employed as a channel through which compressed air or gas can be forced into the said vessel; hut'as soon as the latter has been fully charged, and before the charging operation ceases, the plunger must be permitted to rise until the lateral position of its opening a: is above the packing, when the avenue for the escape of compressed air or gas will be effectually closed, and will remain closed until the f plunger is again so far depressed that the lateral position of the opening :v is below the packing.
- Washers of leather or other analogous substances impregnated 4with lnbricating material may be advantageously employed above and below the packing; or, in order to insure a constant lubrication of the plunger, a ⁇ supply of lubricant may be deposited in the interior of the vessel. This lubricant will find 4its way through the perforations of the guiding-flange d to thepacking in the top of the vessel.
- a ⁇ supply of lubricant may be deposited in the interior of the vessel. This lubricant will find 4its way through the perforations of the guiding-flange d to thepacking in the top of the vessel.
- the modifications shown in Figs. 2 and 3 are well adapted for use as railroad-car springs.
- the spring should consist of a plunger and a vessel combined with a fixed packing confined to the vessel,
- the recessed packing-ring H confined to the-vessel A, between the head B and annular perforated plate N,and adapted to the plunger, all substantially as set forth.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Description
Patented Oct. 19. 1875.
P. GIFFARD.
Air Spring for Car.
UNTTED STATES PATENT rrroa PAUL GIFFABD, 0F PARIS, FRANCE, ASSIGNOB. TO CHARLES JAMES ADOLPH DICK, OF PHILADELPHIA,PENNSYLVANIA.
IMPROVEMENT IN AIR-SPRINGS FOR CARS-.i
Specification forming part of Letters Patent No. 168,980, dated October 19, 1875 application filed June 9, 1875.
To all whom it may concern:
Be it known that I, PAU'L GIFFARD, of Paris, France, have invented certain Improvements in Air-Springs; and I do hereby declare the following to be a full and exact description of the same, reference being had to the accompanying drawing, in which Figures 1, 2, 3, and 4 represent vertical sections of my improved air-spring, the dibrent views showing different modifications, but all containing the important feature oi' my invention.
In Fig. l, A is a vessel, by preference of cylindrical form, and to the upper end of the vessel is secured a head, B, and to thelower end a base, B. Dis a plunger passing freely through and guided by the head B, and having at its lower end a perforated flange, d, the object of which 'is to aid the head B in steadying the said plunger laterally, so that it may always retain a position concentric with the Vessel, the perforations in the flange d affording a free communication between the upper portion of the interior of the cylinder on one side of the flange and the lower portion on the opposite side. At a short distance from the upper edge of the vessel A, and within the same, is aledge for supporting an annular perforated plate, N, and between the latter and the head B is conined a packing-ring, H, which I prefer to make of vulcanized rubber, the perforations in the said plate N permitting the free access of the compressedl air in the cylinder to the packing. The opening in this packing-ring for receiving the plunger is largest in diameter above, and is tapered so as to bear at and near its lower edge only against the plunger. In the under side of the packing-ring is an annular recess, n,'by preference of the angular shape shown, so that one side ot' the recess is vertical, or nearly so, and the other side inclined, the recess being directly above perforations in the plate N. Within the cylinder, and bearing on the base B', is a ring, G, of rubber, which serves the twofold purpose of packing for.` insuring a tight joint between the said base and cylinder, and of a seat for the valve E, between which and the plate m within the cylinder intervenes a spring, I, the latter tending to maintain the valve in contact with its seat on the ring. 'lhe device thus constructed is converted into a spring by charging it with compressed air or gases through an opening in the base by means of an air-pump or other suitable means. The gradual increase in the pressure oi' the spring can be regulated by varying the-diameter of the'plunger D in respect to that of the vessel and the amount of resistance by varying the pressure of air or gases in the cylinder A. The air in the vessel, being under constant pressure, must maintain the packing H in forcible contact with the said plunger, and keep the latter perfectly air-tight, and as the compression of the air increases the tighter will be the joint produced by this packing.
In Fig. 2 the spring is so constructed that the vessel can be charged with compressed air or gases through the plunger D, which is provided with a screw-cap, F, the removal of the latter exposing a central opening, S, which terminates below in a chamber, p', containing a spring-valve, p, the stem of which is guided by .a plate, L, secured to the bottom of the plunger, the valve closing the central openin g S, excepting when compressed air or gas'is being forced through the same into the vessel.
The modification shown in Fig. 3 is the same as that illustrated in Fig. 2, excepting that a foot-valve is arranged in the bottom of the vessel A.
The vessel may he charged with compressed air or gas without the aid of a foot-valve, and in the manner illustrated in Fig. 4, in which an opening, w, extends from the top of the plunger, tirst vertically and then laterally. When the plunger is depressed, as shown, this opening communicates with the interior of the vessell below the packing, and hence can be employed as a channel through which compressed air or gas can be forced into the said vessel; hut'as soon as the latter has been fully charged, and before the charging operation ceases, the plunger must be permitted to rise until the lateral position of its opening a: is above the packing, when the avenue for the escape of compressed air or gas will be effectually closed, and will remain closed until the f plunger is again so far depressed that the lateral position of the opening :v is below the packing. Washers of leather or other analogous substances impregnated 4with lnbricating material may be advantageously employed above and below the packing; or, in order to insure a constant lubrication of the plunger, a `supply of lubricant may be deposited in the interior of the vessel. This lubricant will find 4its way through the perforations of the guiding-flange d to thepacking in the top of the vessel. used in different connections as substitutes for ordinary springsfor instance, the modifications shown in Figs. 2 and 3 are well adapted for use as railroad-car springs.
Two main features are essential in carrying out my invention: First, the spring should consist of a plunger and a vessel combined with a fixed packing confined to the vessel,
in contradistinction to the combination of a packed piston with a vessel, for the latter Will not admit of such easy construction of the spring to suit different degrees of resiliency or rigidity for different purposes as the use of a plunger in the manner described. Moreover, a perfectly-tight packing is more easily Air-springs thus constructed may be insured and maintained when conned'to the vessel, and combined with `a plunger in the manner described, than when it is applied to a constantly-moving piston. The second important feature essential to my invention is the proper lateral steadying of the plunger, partly by the head ofthe vessel and partly by the guiding-flange d, for to permit the plunger to have any considerable lateral play might cause it to so act on the packing as to render the latter liable to leak.
I claim as my invention- 1. The recessed packing-ring H, confined to the-vessel A, between the head B and annular perforated plate N,and adapted to the plunger, all substantially as set forth.
2. The combination ofthe plunger D and its perforated guiding-flange d with the vessel A and its packing.
3. The combination of the vessel A,plung er i.
D, and opening .fr in the latter, for the purpose specified. l
` PAUL GrIFFARD.`
Witnesses DEsBoIX, Z. LEVERGEON.
Publications (1)
Publication Number | Publication Date |
---|---|
US168980A true US168980A (en) | 1875-10-19 |
Family
ID=2238389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US168980D Expired - Lifetime US168980A (en) | Improvement in air-springs for cars |
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US (1) | US168980A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565701A (en) * | 1945-11-17 | 1951-08-28 | John H F Stewart | Fluid sealing device |
US2755059A (en) * | 1949-05-07 | 1956-07-17 | Alois Vogt | Hand-operated valve, in particular for vacuum plants |
US2819775A (en) * | 1953-07-31 | 1958-01-14 | Wilhelm S Everett | Vibration absorber |
DE1264879B (en) * | 1966-04-27 | 1968-03-28 | Stabilus Ind Und Handelsgesell | Gas spring for height and tilt adjustable items |
US3394943A (en) * | 1965-03-10 | 1968-07-30 | Marker Hannes | Heel tightener for ski bindings |
DE1282364B (en) * | 1966-04-27 | 1968-11-07 | Stabilus Ind Und Handelsgesell | Gas spring for the creation of the equilibrium with height and tilt adjustable objects |
US3415530A (en) * | 1964-02-10 | 1968-12-10 | Marker Hannes | Heel releasing device for safety ski bindings |
DE3504362C1 (en) * | 1985-02-08 | 1986-06-12 | Sachtler GmbH Filmtechnische Geräte, 8046 Garching | Height-adjustable column, in particular center column for a tripod to hold a film or television camera |
DE4008863A1 (en) * | 1990-03-20 | 1991-09-26 | Wolfgang Katz | Nitrogen filled tool spring - has integrated lubricating chamber, with plunger and screw lid |
US20020027330A1 (en) * | 1995-04-28 | 2002-03-07 | Work Systems Technology Pty, Ltd. | Control wheel assembly for trolleys |
DE102009042756B4 (en) * | 2008-10-02 | 2019-06-27 | Stabilus Gmbh | gas spring |
-
0
- US US168980D patent/US168980A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565701A (en) * | 1945-11-17 | 1951-08-28 | John H F Stewart | Fluid sealing device |
US2755059A (en) * | 1949-05-07 | 1956-07-17 | Alois Vogt | Hand-operated valve, in particular for vacuum plants |
US2819775A (en) * | 1953-07-31 | 1958-01-14 | Wilhelm S Everett | Vibration absorber |
US3415530A (en) * | 1964-02-10 | 1968-12-10 | Marker Hannes | Heel releasing device for safety ski bindings |
US3394943A (en) * | 1965-03-10 | 1968-07-30 | Marker Hannes | Heel tightener for ski bindings |
DE1264879B (en) * | 1966-04-27 | 1968-03-28 | Stabilus Ind Und Handelsgesell | Gas spring for height and tilt adjustable items |
DE1282364B (en) * | 1966-04-27 | 1968-11-07 | Stabilus Ind Und Handelsgesell | Gas spring for the creation of the equilibrium with height and tilt adjustable objects |
DE3504362C1 (en) * | 1985-02-08 | 1986-06-12 | Sachtler GmbH Filmtechnische Geräte, 8046 Garching | Height-adjustable column, in particular center column for a tripod to hold a film or television camera |
DE4008863A1 (en) * | 1990-03-20 | 1991-09-26 | Wolfgang Katz | Nitrogen filled tool spring - has integrated lubricating chamber, with plunger and screw lid |
US20020027330A1 (en) * | 1995-04-28 | 2002-03-07 | Work Systems Technology Pty, Ltd. | Control wheel assembly for trolleys |
DE102009042756B4 (en) * | 2008-10-02 | 2019-06-27 | Stabilus Gmbh | gas spring |
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