US181226A - Improvement in pistons for syringes, air-pumps - Google Patents
Improvement in pistons for syringes, air-pumps Download PDFInfo
- Publication number
- US181226A US181226A US181226DA US181226A US 181226 A US181226 A US 181226A US 181226D A US181226D A US 181226DA US 181226 A US181226 A US 181226A
- Authority
- US
- United States
- Prior art keywords
- syringes
- piston
- air
- pistons
- pumps
- 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
- 210000002832 Shoulder Anatomy 0.000 description 8
- 239000010985 leather Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
- F16J1/006—Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials
- F16J1/008—Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials with sealing lips
Definitions
- WITNESSES 6%. 4 4
- Figure 1 represents a side elevation of a syringe with my improved piston
- Fig. 2 is a detail vertical section of the piston.
- the invention relates to an improved pis- 'ton for syringes, air-pumps, &c., by which the working out of the pistons, which forms a frequent source of annoyance in syringes, 860., is prevented, and the ready replacing of the packing material rendered possible.
- the invention consists of a piston-rod provided with shoulders and elastic collars, that hold intermediate leather washers placed over the same.
- A represents the piston-rod of a syringe. air or other pump, in which a tightly-fitting piston is required.
- the pistonrod A is made with two retaining-shoulders, a0ne at the end of the rod, the other at a distance from the same equal to the length of the piston.
- Two collars or sleeves, b, of rubber or other elastic material, are placed on the rod between the retaining-shoulders a, for holding disk-shaped leather washers d, that are placed on the rod intermediately between the collars, and then lapped over the same in opposite direction, to form the packing of the piston.
- This piston construction overcomes, in a cheap and effective manner, the annoyance caused by the insufficient fitting of the pistons to the syringes at present in use, and forms a better-working and more satisfactory syringe.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
R. VANDER EMDE.
PISTONS FOR SYRINGES, AIR PUMPS, m. No.181,Z26.
Patented Aug. 15, 1876.
WITNESSES: 6%. 4 4
ATTORNEYS.
N. PETERQ PHQTO-LITHOGRAPH s Nrrnn STATES PATENT OFFICE.
REINHOLD VANDER EMDE, OF' NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND CHARLES E. KOECHLING, OF SAME PLACE.
IMPROVEMENT IN PISTONS FOR SYRINGES, AIR-PUMPS, &c.
Specification forming part of Letters Patent No. 181,226, dated August 15, 1876; application filed February 28, 1876.
To all whom it may concern:
Be it known that I, REINnoLn VANDER EMDE, of the city, county, and State of New York, have invented a new and Improved Piston for Syringes, Air-Pumps, &c., of which the following is a specification:
In the accompanying drawing, Figure 1 represents a side elevation of a syringe with my improved piston, and Fig. 2 is a detail vertical section of the piston.
Similar letters of reference indicate correspondin g parts.
The invention relates to an improved pis- 'ton for syringes, air-pumps, &c., by which the working out of the pistons, which forms a frequent source of annoyance in syringes, 860., is prevented, and the ready replacing of the packing material rendered possible.
The invention consists of a piston-rod provided with shoulders and elastic collars, that hold intermediate leather washers placed over the same.
In the drawing, A represents the piston-rod of a syringe. air or other pump, in which a tightly-fitting piston is required. The pistonrod A is made with two retaining-shoulders, a0ne at the end of the rod, the other at a distance from the same equal to the length of the piston. Two collars or sleeves, b, of rubber or other elastic material, are placed on the rod between the retaining-shoulders a, for holding disk-shaped leather washers d, that are placed on the rod intermediately between the collars, and then lapped over the same in opposite direction, to form the packing of the piston.
The elasticity of the rubber collars produces the tight fitting of the washers to the syringe or pump barrel, and thereby the effective working of the piston.
The Washers and collars are readily replaced when worn out by long use, but keep up their working capacity for long time by the action of the rubber, without getting loose.
This piston construction overcomes, in a cheap and effective manner, the annoyance caused by the insufficient fitting of the pistons to the syringes at present in use, and forms a better-working and more satisfactory syringe.
lam aware that it is not new to use leather washers cushioned by rubber rings, but fastened by metal disks, the lower screwed on the piston-rod. My object is to avoid the use of metallic disks by the use of rigid shoulders on the piston, the elastic collars being readily pushed over the shoulders.
What I claim is-- The piston A, having annular shoulders a a, in combination with the elastic collars b b and flexible washers d d, as and for the purpose specified.
REINHOLD VANDER EMDE.
Witnesses PAUL GOEPEL, T. B. MosHER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US181226A true US181226A (en) | 1876-08-15 |
Family
ID=2250632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US181226D Expired - Lifetime US181226A (en) | Improvement in pistons for syringes, air-pumps |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US181226A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2701172A (en) * | 1950-05-26 | 1955-02-01 | Frederick A Koester | Plunger seal |
| US4767326A (en) * | 1986-11-25 | 1988-08-30 | Dentsply Research & Development Corp. | Cartridge container and ejector piston therefor |
| US20030097993A1 (en) * | 2000-01-14 | 2003-05-29 | Baldur Hjaltason | Cultivation of dha-rich prey organisms for aquatic species |
| US20040080957A1 (en) * | 2003-08-21 | 2004-04-29 | Aaron Golle | Moduflaps with EL lighting |
| US20040080956A1 (en) * | 2003-08-21 | 2004-04-29 | Aaron Golle | Multi-colored EL safety sign |
-
0
- US US181226D patent/US181226A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2701172A (en) * | 1950-05-26 | 1955-02-01 | Frederick A Koester | Plunger seal |
| US4767326A (en) * | 1986-11-25 | 1988-08-30 | Dentsply Research & Development Corp. | Cartridge container and ejector piston therefor |
| US20030097993A1 (en) * | 2000-01-14 | 2003-05-29 | Baldur Hjaltason | Cultivation of dha-rich prey organisms for aquatic species |
| US20040080957A1 (en) * | 2003-08-21 | 2004-04-29 | Aaron Golle | Moduflaps with EL lighting |
| US20040080956A1 (en) * | 2003-08-21 | 2004-04-29 | Aaron Golle | Multi-colored EL safety sign |
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