US873619A

US873619A - Motor.

Info

Publication number: US873619A
Authority: US
Inventors: John Schroeder
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-04-20
Filing date: 1907-04-20
Publication date: 1907-12-10
Anticipated expiration: 1924-12-10

Description

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APPLICATION FILED APR. 20. 1907.

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PATENTED DEG. l0, 1907.

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MOTOR.

APPLICATION FILED APR. 20. 1907.

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MOTOR.

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JOHN SCHROEDER, OF DAVENPORT, IOWA.

MOTOR.

Specification of Letters Patent.

Patented Dec. 10, 1907'.

Application filed April 20. 1907. Serial No. 369.261.

To all 'whom it may concern:

Be it known that I, JOHN SOHROEDER, a citizen of the United States, and a resident of Davenport, in the county of Scott and State of Iowa, have invented a new and Improved Motor, of which the following is a full, clear, and exact description.

This invention has reference to improvements in motors, being more especially designed as a hydraulic motor but will be found to have a high eHiciency when actuated by either steam or air.

The invention has for objects, among others, the provision of a motor of this character which is simple and compact and in which the admission and discharge of the motive agent to and from the cylinder at both sides of the piston, will be controlled by a single positively-operated valve.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of my improved motor complete; Fig. 2 is a plan of the same; Fig. 3 is a rear end elevation showing the valve casing partly broken away; Fig. 4 is a horizontal, central, sectional view of the cylinder; Fig. 5 is a fragmentary, sectional'view of the construction shown at the rear end of Fig. 4, on an enlarged scale; Fig. 6 is a sectional view similar to Fig. 5 but with the controlling valve in a position to admit the motive agent behind the piston, the cylinder at the opposite side of the piston being in communication with the exhaust portion of said valve, and Fig. 7 is a perspective view of the controlling valve removed from the valve casing.

lNIy improved motor is carried on a suitable base 1 and includes a cylinder 2 secured near one end thereof, having front and rear heads 3 and 4, respectively, the former being extended to provide a chamber 5 communicating with the cylinder, and the latter to form a valve casing 6. Within this casing is vertically mounted a conical controlling valve 7 shown in detail in Fig. 7. This valve is of the three-way type, comprising an admission port S cored out within it for substantially a semi-circumference, where it passes to the exterior of the valves at diametrically opposite points. The port 8 also has an openmg 9 through the side of the valve, located in an intermediate position, as clearly shown. D1-

rectly opposite the opening 9 a longitudinal exhaust slot 10 is formed in the valve and extends to the bottom thereof, where it passes into an exhaust pipe 11 connected with the lower end of the valve casing, the valve 7 being cut away `at one side adjacent to the lower extremity 12 of the slot 1() to permit the free passage of the exhaust from the slot to the exhaust pipe, a pet cock 11a leading from the exhaust at one side being preferably provided, as shown in Fig. At one side of the valve casing 6 the actuating supply leads thereinto through a pipe 13 and a pipe 14 leads from the opposite side of the valve casing to the opposite end of the cylinder, discharging into the chamber 5. On top of the casing 6 a cap 15 is bolted or otherwise secured, through which the stem of the valve passes, the latter having fixed thereto a pinion 16 which is in mesh with a rack-bar 17 guided in ways, one of which is formed in the cap 15, as best shown in Fig. 2 and the other being formed by a bolt or pm 18 carried by a lug and passing through a slot 19 formed in the rack-b ar at the opposite end of the cylinder. A bracket 2O fixed to the rear portion of the cylinder is provided with an overhanging end which receives a bolt 21 threaded into the stem of the valve and is operable to properly adjust the valve in the casing.

Slidable within the cylinder is the usual piston 22 having a rod 23 which passes through the chamber 5 and into a crosshead 24 slidably mountedv between the guides 25, said guides being rigidly connected together by yokes 26 at opposite ends and secured to the base 1. As best shown in Fig. 4, the end of the chamber receives a packing gland 27 which is forced in the direction of the cylinder by studs 28 and forms a liquid and gastight joint about the piston.

Near the opposite end of the base 1 a crank shaft 29 is journaled in suitable bearings, preferably carried by spaced plates 30, the latter being rigidly connected to the base and also connected to each other, as clearly shown. A crank 31 carried by the crank shaft 29 is .connected with the crosshead 24 by a connecting rod 32, the connection between this rod and the crosshead preferably being eHected by forming the rod with oppositelydisposed trunnions 33 which pass. into extended bearings 34 fixed to the crosshead.

Secured'to the crank shaft 29 between the plates 30 is a large gear 35 meshing with a somewhat smaller gear 36 fixed to a countershaft 37 also journaled in the plates 30. A gear 38 fixed to the countershaft at one side of the gear 36 projects into an opening 39 cut into the base between the plates and meshes with a small gear 40 fixed to a driving shaft 41, this last-named shaft being shown as carrying the usual fly-wheel 42.

The crank 31 is extended at one side to form an auxiliary crank 43, the arm of which is slotted to adjustably receive a crank pin 44, the latter being connected with a valverod which is provided with a attened and slotted rear end through which passes a bolt or other projection 46, this last-named bolt being adjustably secured in any suitable manner to the rack bar 17. At each end of the slot of the valve rod a stop 48 is adjustably connected by a bolt 49, said stops procontrolling valve..

jecting into the path of the bolt 46 and operating to slide the rack-bar 17' to oscillate the controlling valve in the proper sequence with the reciprocation'of the engine piston. It is apparent from this construction by the adjustment of the stops 48 and the pin or bolt 49, that the amount of oscillation of the controlling valve as well as its position at different periods of the piston travel, may be regulated.

In the operation of the motor, when the piston and. controlling valve are in the position as illustrated in Fig. 4,' the actuating agent passes into the valve casing and through the port 8 in the valve to and through the pipe 14 which discharges into the chamber 5 and thence into the cylinder at the front of the piston, causing the latter to travel rearwardly. As the limit of movement of the piston in this direction is approached, the valve rod 45 through the intermediate connecting mechanism, revolves the controlling valve substantially a semi-revolution, thereby placing the forward portion of the cylinder in communication with the exhaust slot 10 of the valve and the cylinder at the rear of the piston in direct communication with the actuating agent through the port 8, causing the piston to again move forward, as shown in Fig. 6. As the piston reaches the forward limit of its stroke, the controlling valve is again shifted to the position shown in Fig. 4, placing the rear portion of the cylinder in communication with the exhaust and the forward portion thereof in communication with the supply port in the This continuous operation of the piston drives the driving shaft from the countershaft through the intermediate gearing at slow speed, which admits of the operation of the motor under low pressure motive agents.

The invention has been described in detail in order that the construction and operation might be clearly understood. I, however, regard the precise construction as not material and consider that I am entitled to such changes as fall within the scope of the claims annexed.

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

1.. In a motor, the combination of a cylinder having a piston, a driving shaft driven by said piston, a valve controlling the admission and the exhaust to the cylinder at each side of the piston, a pinion fixed to the valve, a rack bar slidably mounted in a guideway arranged longitudinally of the cylinder, in mesh with the pinion, and means slidable relatively to the rack-bar for operating it from said shaft.

2. In a motor, the combination of a cylinder having a piston, a rotary valve for controlling the admission and the exhaust to the cylinder, reciprocating means for oscillating said valve including a rack bar, andadjustable stops carried by said reciprocating means acting on said bar for regulating said oscillations.

3. In a motor, the combination of a cylinder having a piston, a crank shaft driven by the piston, a rotary valve for regulating the admission and exhaust to the cylinder, a pinion fixed to said valve, a rack-bar in mesh with said pinion and` having a projecting member, a slotted rod connected to said crank shaft and slidable on said member, and adjustable stops carried by said rod in the path of and at opposite sides of said member.

4. In a motor, the combination of a cylinder having a piston, a valve casing communicating with said cylinder at opposite sides of the piston, a three-way valve revolubly mounted in the casing, a pinion fixed to the valve, -a rack bar in mesh with the pinion,

and means having a sliding connection with the rack bar for reciprocating it to oscillate the valve in proper sequence with the operation of the piston.

5. In a motor, the combination of a cylinder having a piston, a valve casing communicating with the cylinder, a valve vertically and revolubly mounted in said casing, means for revolving the valve in proper sequence with the reciprocations of the piston, a bracket overhanging the valve casing, and a screw supported by said bracket and threaded into said valve for adjusting it longitudinally of the casing.

6. In a motor, the combination of a cylinder having a piston, a valve casing com- .municating with the cylinder at opposite sides of the piston, a cylindrical valve revolubly mounted in the casing having admission openings and a discharge opening, a pinion fixed to said valve, means carried by said cylinder for adjusting the valve in the casing, a rack-bar in mesh with the pinion, and means for reciprocating the rack-bar to osoillate the valve in proper sequence With the reoiprooations of the piston.

7. In a motor, the combination of a, cylinder having a head provided with a valve oas- 5 ing which communicates With the Cylinder, a In testimony whereof I have signed my 1 and having a slotted end slidable upon said three-Way valve yrevolubly mounted in the name to this specification in the presence of l member, and an adjustable stop in the path of and at each side of said member Carried by casing, a pinion fixed 'to said valve, a raoktwo subscribing Witnesses.

bar in mesh With the pinion and having a JOHN SCHROEDER.

projecting, member, a piston operable Within 0 the cylinder, a crank shaft driven from the piston7 a rod connected with thev crank shaft Witnesses:

P. MEYER, E. A. GOETTIG.

said rod. 15vk