US83188A - Improvement in pistons for steam-engines - Google Patents

Improvement in pistons for steam-engines Download PDF

Info

Publication number
US83188A
US83188A US83188DA US83188A US 83188 A US83188 A US 83188A US 83188D A US83188D A US 83188DA US 83188 A US83188 A US 83188A
Authority
US
United States
Prior art keywords
steam
piston
head
improvement
pistons
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
Application number
Publication date
Application granted granted Critical
Publication of US83188A publication Critical patent/US83188A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J1/00Pistons; Trunk pistons; Plungers
    • F16J1/02Bearing surfaces

Description

regalati tat'm "www @fina w anni www H. N. J. MANSFIELD, OF MALONE, N EW YORK.- Lmm Patent No. 83,188, camz octava 2o, 186s.

The Schedule referred to in these Letters Patent and making part ofthe same..

To all Iwho/m, 'it fnul/y camara:

Beit known that I, H. N. J. MANSFIELD, of Malone, in the county of Franklin, and in the State of New York, have invented certain new and useful Improvements in Pistons for Steam-Engines; and do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon.

In the presenti ordinary style of cylinder, horizontal, the whole weight of the piston-head and rod is continually borne by the lower inside of the cylinder, and bythe stuiIing-box, causing a rapid wear of the lower cylinder, on its bottom and sides, also a wear of the sniffing-box, as well as of the packing-rings and followers of the piston-head. From this it results that the best piston-head soon becomes leaky, and the stuifing-box and cylinder are cut downwards.

The design of my invention is to prevent this wear by constructing the piston-head in the manner here inafter described, so that there shall be an upward pressure of the steam exactly suiicient to counterbalance the weight of the piston-head and rod.

In order to enable others skilled in the art to make and use my inventionI will now proceed to describe its construction and operation, referring to the annexed drawings, which form a part of this specification, and which represent a vertical section of a steam-cylinder, showing my `counter-balance on steam-piston.

G is the lower inside of cylinder, on which the piston-head rests and moves, and on which comes the wearlof the piston, and which it is the purpose of my improvement to prevent;

B B are the followers of the piston-head;

G C packing-rings ofthe piston-head;

F, stuffing-box;

D D', steam-ports; and v respectively the upper and lower lips of the which constitute my improvement,

A A', follower,

In the drawings, the 'arrows show the way in which the steam is brought to bear upon the piston.

The steam entering through the steam-port D passes to A, which is a lip or projecting flange from the follower. This lip should have a surface suiiiciently large for the upper pressure of the steam to counterbalance the weight of piston-head and rod.

For example, if the piston-head and rod weigh two hundred pounds, having a pressure of fifty pounds to the square inch, then it is found that a lip having a surface 'of four inches, will allow an upward pressure of two hundred pounds, just sucient to balance the gravity of the piston, and permitting it to move backwards and forwards comparatively free from friction, and without wearing the cylinder or box.

In new-made cylinders, the e'omplish the purpose.

In old cylinders, which have been worn down, and where steam lmight easily pass above the lip A, the purpose is accomplished by y'making a lip, A', at the bottom of the follower, by takingout or sinkjng a segment of its surface, as shown in the drawingg'or both lips may be used on and the upward pressure divided between the two lips.

This Yimprovement is applicable for all horizontal cylinders, for air, steam, or water.

Having thus fully described my invention,

The construction of the piston-head for horizontal cylinders, with the projecting lip A and indentation A', near its periphery, whereby to obtain upward pressure of steam, all substantially as herein set forth.

lip A is suicient to ac- In testimony that I claim the foregoing, I have here- 25th day of August, 1868.

unto set my hand, this H. N. J. MANSFIELD.

Witnesses:

ROYAL Comun, J. H. MOORE.

and the engine is run with steam.

the follower at the same time,

and desire to secure by Letters n

US83188D Improvement in pistons for steam-engines Expired - Lifetime US83188A (en)

Publications (1)

Publication Number Publication Date
US83188A true US83188A (en) 1868-10-20

Family

ID=2152681

Family Applications (1)

Application Number Title Priority Date Filing Date
US83188D Expired - Lifetime US83188A (en) Improvement in pistons for steam-engines

Country Status (1)

Country Link
US (1) US83188A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974541A (en) * 1954-09-07 1961-03-14 Gen Motors Corp Offset piston-pin balancing arrangement for engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974541A (en) * 1954-09-07 1961-03-14 Gen Motors Corp Offset piston-pin balancing arrangement for engines

Similar Documents

Publication Publication Date Title
US2631907A (en) Valve
US787480A (en) Centering-motor.
US2780504A (en) Accumulator piston
US404504A (en) Fluid peessnre regulator
US109678A (en) Improvement in pumps
US2536788A (en) Level vial mounting
US1757311A (en) Stuffing box
US1787317A (en) Stuffing box
US1905822A (en) Packing
US2768865A (en) Piston or packing rings
US1069188A (en) Valve.
US2726887A (en) Plunger connection for reciprocating pumps
US2884290A (en) Expandable piston for internal combustion engines
US2159033A (en) Fluid mixing valve
US342073A (en) Block-presser for paper-pulp mills
US453017A (en) Piston-valve
US51081A (en) Improvement in variable cut-offs
US465050A (en) Steam-pump
US1114184A (en) Door closer and check.
US2931620A (en) Seal for balanced valve
US738787A (en) Direct-acting steam shearing-machine.
US2583957A (en) Piston ring assembly
US2208976A (en) Rod or shaft packing
US30224A (en) Kotaby engine
US39458A (en) Improvement in steam-engines