US109338A - Improvement in air-engines - Google Patents

Improvement in air-engines Download PDF

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US109338A
US109338A US109338DA US109338A US 109338 A US109338 A US 109338A US 109338D A US109338D A US 109338DA US 109338 A US109338 A US 109338A
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air
valve
engines
crank
improvement
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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
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/44—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying or interconverting oscillating or reciprocating motions
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18992—Reciprocating to reciprocating

Definitions

  • Figure 2 is a central horizontal section of the cylinder and valves.
  • Figure 3 is a detached view of the reversing apparatus.
  • a A are two ⁇ metallic hemisphercs, so termed, although not precisely hcmispherical in form.
  • C is a diaphragm or partition ot' India. rubber or ⁇ other iicxible material, secured between the flanges a a', and dividing the cylinder into two equal parts, marked, respectively, I) 1).
  • 1d is the piston-rod, passing through boxes c c', which are properly packed and rendered air-tight, and through the ⁇ center ot ⁇ the diaphragm C, to which itis secured by means of the disks or plates F F, which are bolted upon each side ct' the diaphragm, and which serve to strengthen and torsen the same around the said piston rod.
  • G is thc valve-rod, which operates an ordinary sliding valve, H.
  • J is the supply-pila.
  • the compressed air enters the valve-chest li, passes around the valve 'l-lV and hito one of the passa-ges b or lf.
  • the dead air in the compartment I will be exhausted or forced out through the passage I into the small chamber j', from whence there are several tree passages into the open air.
  • the reversing apparatus consist-s of the quadrant K, which is pivoted to the crank L at'M.
  • crank L has, rigidly attached thereto, the spring-crank or lever O, which has a pin, p, working in a slot, s, of the quadrant K; v
  • crank L is rigidly attached to the main shaft T, which cari-ics the tiy-wheel U and the main or drivin g-crank V.
  • the connecting-rod, W which communicates motion to the valve-rod G, and so to the valves, is pivotcd to the quadrant K at a point, s, eccentric to the main shaft T.
  • the eonnectingarm is pivoted so that it shall be about aquarter revolution of the main shaft in advance el the main crank Y.
  • valve motion is a quarter in advance the engine moves for 'ard, and when itis a quarter behind the engine moves backward or' reverses.
  • the spring-crank or lever O has certain pins or catches which fit into corresponding cavities in the quadrant 1i, to hold the same in place after it has been moved backward or forward.
  • Thc combination ot the. quadrant K and springcrank or lever O, when so constructed and arranged thatthe 'alve motion may be reversed, substantially as shown.

Description

lettori ditta.
DAVID MYERS, TOF CHICAGO, ILLINOIS.
Letters Patent No.. 109,338, dated November 15, 1870.
IMPROVEMENT IN AIR-ENGINES.
The Schedule referred to ln these Letters Patent and making part of the same.
I, DAVID MYERS, of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Compressed-Air Engines, otwhich thc following is a specification.
In the accompanying drawing-7- Figure l is a plan or top view of an engine constructed after my invention. v
Figure 2 is a central horizontal section of the cylinder and valves.
Figure 3 is a detached view of the reversing apparatus.
General Description.
. A A are two `metallic hemisphercs, so termed, although not precisely hcmispherical in form.
They areeach fitted with a flange, a c', by means of which they may-be fastened together by boltspassing through the said flanges.`
At one side the metal of said hemispheres is continued, to form channels of communication, b b', with the valve-chest vll.
C is a diaphragm or partition ot' India. rubber or `other iicxible material, secured between the flanges a a', and dividing the cylinder into two equal parts, marked, respectively, I) 1).
1d is the piston-rod, passing through boxes c c', which are properly packed and rendered air-tight, and through the `center ot` the diaphragm C, to which itis secured by means of the disks or plates F F, which are bolted upon each side ct' the diaphragm, and which serve to strengthen and stiften the same around the said piston rod. l
G is thc valve-rod, which operates an ordinary sliding valve, H.
J is the supply-pila.
The compressed air enters the valve-chest li, passes around the valve 'l-lV and hito one of the passa-ges b or lf.
The drawing indicates this course by arrows. Say it passes into the passage b', through which it will reach the compartment 1)' otl the cylinder, and will exert its force to send home the pistou-rod, by pressing against the partit-ion or diaphragm C, which will assume aposit-ion indicated by the dotted line.
The dead air in the compartment I), will be exhausted or forced out through the passage I into the small chamber j', from whence there are several tree passages into the open air.
As the valve is moved by appropriate machinery, this operation is alternately afiirmcd and reversed, giving the proper and usual reciprocating motion to the piston-rod E, whence itis communicated tothe desired machinery.
.cxtreme simplicity and cheapncss.
Ot' course it will be understood that the rubber diaphragm above described would not be suitable for use in a steam-cylinder or with hot air, as the hea-t would melt or soften the rubber.
The reversing apparatus consist-s of the quadrant K, which is pivoted to the crank L at'M.
This said crank L has, rigidly attached thereto, the spring-crank or lever O, which has a pin, p, working in a slot, s, of the quadrant K; v
The crank L is rigidly attached to the main shaft T, which cari-ics the tiy-wheel U and the main or drivin g-crank V.
The connecting-rod, W, which communicates motion to the valve-rod G, and so to the valves, is pivotcd to the quadrant K at a point, s, eccentric to the main shaft T.
As is-customary in ordinarysliding-valve motion,
the eonnectingarm is pivoted so that it shall be about aquarter revolution of the main shaft in advance el the main crank Y.
Now the quadrant 1i is so adjusted that, when the pin p stands as in the drawing, the valve motion' shall bca| quarter in advance ofthe main crank; but when the pin p stands'at p the said valve motion shall be a. quarter behind the main crank.
This difference constitutes the reverse- 7 \Vhcn the valve motion is a quarter in advance the engine moves for 'ard, and when itis a quarter behind the engine moves backward or' reverses.
The spring-crank or lever O has certain pins or catches which fit into corresponding cavities in the quadrant 1i, to hold the same in place after it has been moved backward or forward.
The advantage urged for this reversing device is its An ordinary link motion or other reversing apparatus, even the simplest ot` them, are intricate and complex in their construction, and very costly. This reversing apparatus, taken with the cylinder, constitutes an exceedingly ehe-ap and simple engine.
Having thus described my invention,
What I claim, and desire to secure by Letters Patent, is-
Thc combination ot the. quadrant K and springcrank or lever O, when so constructed and arranged thatthe 'alve motion may be reversed, substantially as shown.
DAVID MYERS.
\Vitnesses:
L. L. (JonUnN, J. \V. MnNnAr.
US109338D Improvement in air-engines Expired - Lifetime US109338A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660471A (en) * 1950-01-14 1953-11-24 William D Egly Propulsion means for garden hose

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660471A (en) * 1950-01-14 1953-11-24 William D Egly Propulsion means for garden hose

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