US1680877A

US1680877A - Fluid-pressure engine

Info

Publication number: US1680877A
Application number: US710309A
Authority: US
Inventors: Hamonds Robert
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-05-01
Filing date: 1924-05-01
Publication date: 1928-08-14
Anticipated expiration: 1945-08-14

Description

Aug. 14, 1928. 1,680,817

R. HAMONDS FLUID PRESSURE. ENGINE Filed May 1, 19124v Patented Aug. 14, 1928.

- A UNITED STATES ROBERT HAMONDS, F CLEVELAND, OHIO.

FLUID-PRESSURE i Application filed May 1,

The present invention relates to an engine which is adapted to be operated by some fluid pressure medium such as compressed air and which embodies nov'el features of construction. y

Further objects of the invention are to provide a compressed air operated engine which is compara ively s mple an ine p ls ve'in it co s r c on, and wh ch w run smoothly. 7

Wi h the fo egoing a d other bj in vi w th invent q mnsis s in c rta n mbinations and arrangements of the parts as w ll m e f l y app r the description proceeds, the novel" features thereof being p in ed out in the appe ded c ims.

For the full understanding of the invention reference is to be had to the following description and accompanying drawings, in which,

Figure lis a near view of the engine.

Figure 2 is an end view of the engine.

Corresponding and like parts are referred to in the following description and indicated on all of the views of the drawings by like reference characters.

Referring to the drawings which illustrate one of many possible embodiments of the invention, the numeral 1 designates a main frame upon which the various parts of the engine mechanism are mounted. Extending across the lower portion of the main frame is the crank shaft 2, which is journaled in the bearings 3, one of the bearings 3 being provided between each pair of the cylinders and also at each end of the main frame. Each of the crank portions of the crank shaft is connected by a pitman 4 to a slide 5 which operates within a tubular guide member 6. A cylinder 7 projects downwardly into the upper portion of each of the guide members 6 and is arranged coaxially therewith.

The piston guides 5 have a hollow formation and slide freely up and down on the exterior of the cylinders 7. A piston 8 is slidably mounted within each of thecylinders 7 and connected by a rod 9 to the corresponding slide 5. The slide and piston are 9 thus connected so that they move in unison,

the piston reciprocating up and down within the interior of the cylinder 7, while the slide reciprocates on the exterior of the cylinder and within the guide member 6; The slide thus cooperates with the tubular guide mem- 1924. Serial No. 710,309.

M lead from these openings. to the valve housings 15. Poppet valves 17 are mounted L withinthese valve housings, and the valves Within the housings function as inlet valves. The valve stems 18 extend dowIlwardly at the back of the main frame 1,

passing through suitable uides 19 and terurinating at their lower ends in feet 20 which are adapted to :be engaged by the respective cam portions 21 of a cam shaft 22. Springs 23 are connected to the valve stems 18 and nQiimally tend to move the valve stems downwardly to close the respective valves and hold thefeet 20 thereof in position for engagement by the cam portions of the cam shaft. The cam shaft 22 is connected b suitable gearing 24 to the main crank sha t and the ratio of the gearing is such that the inlet and exhaust valves are opened and closed at the proper times for admitting compressed air to the respective cylinders or exhausting it therefrom.

The lower portion of each of the inlet valve housings communicates through the pipes 25 and connection 26 with an intake manifold 27 which receives some fluid pressure medium such as compressed air from a supply pipe 28. The lower portions of the exhaust valve housings 16 communicate through the branch pipes 29 with the exhaust pipe 30. y

When the throttle valve is open compressed air is supplied to the intake manifold 27 which communicates through the pipes 25 with the lower portions of the inlet valve housings 15. The valves 17 of these inlet valve housings are automatically opened by the cam shaft when the corresponding pistons 8 are at the upper limits of their movements. Compressed air then enters the cylinders and acts upon the pistons to force the pistons downwardly. When the pistons through the exhaust valve housings 16 and the exhaust pipe 30. As previously explained the slides 5 move with the respective pistons 8 and assist in directing the pistons in their reciprocating movements so that a smooth running action is obtained. 7

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. An engine of the character described, including a tubular guide sleeve, a cylinder having a free end which projects into the guide sleeve in a spaced relation thereto, and is concentric therewith, a working piston mounted to reciprocatewithin the cylinder, a tubular guide mounted to reciprocat'e upon the exterior'of the cylinderin the space between the cylinder and the sleeve,

and a rigid connection between the tubular guide and the piston.

2. An engine of the character described,

including a tubular guide sleeve, a cylinder arranged co-axially with the sleeve, a bracket connecting one'end of the sleeve to one end of 'the cylinder and supporting the cylinder with a free end thereof projecting into the'sleeve in a spaced relation, a working piston mounted to .reciprocate within the cylinder, a tubular guide mounted to reciprocate on the exterior of the cylinder in the space between the cylinder and the tubular guide, and a rigid connection between the sleeve and the piston.

3. An engine of the character described, including a tubular guide sleeve, a cylinder arranged co-axially with the sleeve and projecting into the same in a spaced relation thereto, a Working piston mounted to reciprocate within the cylinder, a tubular guide mounted to reciprocate on the exterior of the cylinder in the space between the ton reciprocally mounted therein, a sleeve slidingly engaging the exterior of the cylinder and connected to the piston to move -with and guide the plston, and a tubular guide surrounding and engaging the sleeve to guide the same in its movements.

In testimony whereof I afiix my signature.

ROBERT HAMONDS.