US1237631A - Fluid speed-governing mechanism. - Google Patents

Description

T. GI-IIISMEFIl FLUID SPEED GOVERNING IVIECHANISIVI.

APPLICATION FILED IAN. 24\ 1916.

Pateted Aug. 21, y1917'.

v1/mmf? Meade/"e Germ/77er f' ATTORNEY UNITED: sTATEs Parleur onirica? '.LHEODORENSMER, 0F MINNEAPOLIS, MINNESOTA.

FLUID SPEED-GOVERNING MECHANISM.

i To all whom it may concern.'

A.Be it known that I, THEoDonn GnNsMER,

` a citizen of the United Sta-tes, and a resident of Minneapolis, Minnesota, have invented a new and useful Improvement in' Fluidrectly by a prime mover such as a gas-engine or electric motor', and the driven member connects with the traction wheels or other element from' which the power is taken oif.

The main object of my. invention is to provide an Aimproved form of speed governing'mechanism, in which the speed of the driven member may be varied from zero to maximum, and this accomplished without the use oit' either sliding, planetary or fric# tion gears. It will be apparent that because the transmission can be reduced to zero, the

.a preferred mechanism; Fig. `5 is a plan View of the device will also serve as a clutch. Another object of my linvention is to provide an absolutely noiseless transmission mechanism, and also a convenient means for controlling'the same..Y

In the accompanying drawings: v. Figure' l `is a side elevation of my device,

part being shown i`n section;

Fig. 2 is a diametrical section of one `of the` pistons Fig. 3 is a plan .view of the piston shown in Fig. 2; Fio'. a sectional view showing Form' of' piston valve operating valve and valve stem shown in Fig. 4, and Fig. 6 is a fragmental side elevation of the yoke connecting the, opposed pistons.

In the construction shown in these drawings, a represents a drive shaft provided with a crank b and end c. Said shaft is mounted in a bearing c, which is supported by the transverse channel member d of the supporting frame. A. driven shaft e is mounted in a bearing f, the latter being sup ,ported by the channel member g'. The

shafts 0, -e -are journaled in longitudinal alinelnent and the transmlsslon mechanism of my invention is adaptedv to.co`nnect the two. Rigidly mounted-on the shaft c is a hub Z, bearinv spider arms h which support the radial cy inders i, which Aare shown as l Specification of Letters Patent. :Patented Aug, 21, 1917', Application filed January V24v, 1916.- Serial No. 74,040. i

located diametrically opposite each other. A hub j and spider arms are integrally'l formedwith the cylinders z', and the shaft a is rotatably mounted in the hub j. .The extreme end if: of the shaft a is rotatably mounted in the hub Z adjacent the end of the shaft e. The cylinders i are provided at -opposite'ends with the Huid-tight stuffing in which slot the crank I) has a bearing. It A will thus be seen that the revolutions of the shaft a will reciprocate the piston rod p so as to move thepistons o always in the same direction. Thel pistons o are provided with i longitudinal ports 41 A(see Fig. 2) and, adjacent the outer face of said piston'is a plate 8,-.

provided with port holes t, adapted to cover the ports 7" when said plate is rotated. The plate s is rotatable with respect to the pis- Y ton, but has no longitudinal movement relaextends into the hollow piston rod. The

tive thereto, being held in place by a Spanner nut a, which is adapted to thread into a tappedl recess of said piston. The nut u is provided with ports o, which are in alinement with the ports 1', and when the plate s has been rotated so as to bring the ports t in alinement with the ports'r, o, fiuid will readily bypass from one end of the cylinder to the other.' Piston rings are inserted bel tween the plate .sand; the piston face so as to prevent leakage between these parts. A valve stem w -is rigidly fixed to the valve .plate s, being in longitudinal'alinement with the piston rod p and projecting through the outer end of the cylinder. On the'outer end of each valve/"stem w is an operating lever' which consists of a pin af; fixed laterally in said stem. Keyed on the hub Z is a collar 3/,

adapted to be moved forward by a shifter lever z', which is pivoted at 2 in a bracket 3, 'the latter made integral 'with the bearing f.' The collar 1/ is provided with radial arms 4: the extremities of which are curved, as at 5, and provided with slots 6, which are parallel with the longitudinal axis of the cylinders; The pins a; project through said slots..y f i In Figs. 4 and 5 I have shown 'apreferred form of valve operating mechanism. In this form the piston rod .77 is madegh'olin the cylinder' head, and its inner end f low, the valve stem lw is rotatably mountedE i `valve s is of the same construction and arrangement in the piston as shown in Fig. 2, but instead of being rigid on the stem `w it is provided with a key s2, running in a `keyway w? of said stem. In this way, the

i' piston is allowed free travel, but by rotating the valve stem the valve will be operated.

AS- a means for rotating the' valve stem fw ioI "I, providev on its outer end a full shrouded ar 7. Each radial-arm 4 is provided at lts'outer end with a rack S, meshing with the gear 7, and adapted t'o rotate the lat- 4 ter and therewith the valve stem w when .ever the shifter lever e' is operated.

This form of Valve o erating mechanism is'preferable because t 1e entire device will be more dompact and not take up as much space as "thctype shown in'Fig. 1.

.close the piston ports, the fluid will bypass more slowly and the reciprocations Aof the l piston-rod will be slower, thereby transmitting a certain speed of rotationto th'e shaft e. When the ports are entirely closed the pistons will beheld stationary at any point 1n the cylinders to which they may have been moved, and a constant speed equal to the speed of the drive-shaft, a, will beI transmitted from the said drive-shaft, a, to the driven shaft e.

I claim: f i

1. In a fluid speed governing mechanism, a shaft, radial fluid cylinders fixed on said shaft, pistons reciprocable within said cylinders, a crank shaft, connections between the crank shaft and the pistons for reciproeating the, latter synchronously in the same direction, means for by-passing the fluid to opposite. sides of the pistons, said means comprising valve members mounted in the pistons, and operating means for said valve members,said means operable during the revolution of the cylinders.

2. In a fluid speed governing mechanism,

` a shaft, radial fluid cylindersfixed on said "shaft,-pistons reciprocable within said cylinders, a. rigid piston rod connecting said pi ons and provided with a yoke, a crankshaft, connections between the crank shaft and the yoke for rec1procating the pistons synchronously 1n the same direction, and

means for by-passing the fluid to opposite' sides of the pistons, said means comprising Vy valve members mounted in the pistons.

3. In a fluid speed governing mechanism, a durft, radial fluid cylinders fixed on said shaft, pistons reciprocable within said cylmders, a rigid pistonrod connecting said pistons and provided with a yoke, a crank shaft, connections between the crank shaft and the yoke for reciprocating the pistons synchronously in the same direction, means for by-passing the fluid to opposite sides of the pistons, said means comprising valve members mounted in the pistons, and operating means for said valve members, said means operable during the revolution of the cylinders.

4. In a device of the character described, a radial revoluble fluid cylinder, a piston reciprocable therein, said piston vprovided with longitudinal ports, a valve member nibunted in the piston and adapted to control the opening of said ports, a rotatable valve stem projectingT longitudinally through the cylinder head and slidably connected with said valve member, and means for rotating said valve stem during the revolution of the cylinder, said means comprisingr a member laterally movable with respect to the cylinder.

5. In a device of the character described,

a radial revoluble fluid cylinder, a piston rcciprocable therein, said piston provided with longitudinal ports, a valve member mounted in the iston and` adapted to control the opening ofo said ports, a rotatable valve stem projecting longitudinally through the cylinder and slidably connected with said valve member, an operating gear on the outer end of said stem, and means for rotating said operating gear during the revolution of the cylinder, said means comprising a member laterally movable with respect to the cylinder.

6. In a device of the character described, a radial revolublc fluid cylinder, a piston re.- ciprocable therein, said piston provided with longitudinal ports,- a valve member mounted in the piston and adapted to control the opening of said ports, a rotatable valve steln projecting longitudinally through the cylinder head and slidably connected with said valve member, an operating gear on the outer end of said stem, means for rotating said operating gear during the revolution ol the cylinder, said means comprising a mem berlaterally movable with respect to the cylinder, and a rack on said member engaging with the valve operating gear.

7. In a device of the character described,

a radial revoluble fluid cylinder, a piston reciprocable therein, said piston provided' with lonr'tudinal ports, a Valve member mounted in t,4 el piston and adapted to control the opening of said ports, a rotatable valve stem projecting longitudinally through the cylinder head and slidably connected with said ,valve member, an operating gea-r 'on the outer end of said stem, means for rotating said operating..I gear during the revolution of.

the cylinder, saidmeaus comprising a member laterally movable with respect to thecylf Vlao index', a 'rack on said member engaging with the valve operating gear, and" ineen@ moving said member laterally.

8. In a device of the character desoribed, a radial i'evoluhle fluid cylinder, a piston i'eciproeable therein, said piston provided with longitudinal ports and a hollow piston iod, a valve member mounted in the piston and adapted to control the opening of said ports. a iotataiie .v'alve Stem projecting longitudinally through the cylinder head into the hollow piston rod and Slidahly connected with said valve-member, and means for i'otating said valve stem dui-ing the revolution of the cylinder.

i). In a device of the character described,-

a radial ievoluble fluid cylinder, a piston iei-iproealile therein, said piston provided with longitudinal ports and a hollow piston i-od, a valve member mounted in the piston :ai-id j wted to control the opening 0f Said pei Lsziid Xailye irieinyber being made v'vith a i l gllcey, :a le .Whg gtern proJectthe ,ey iiider eed into the hollow .in g1g@ and provided with a keydvafv in fw i the of the valve member is adapte 'to lld; {il} Qpeatmg guai' on the outer end of .Said @im means for rotating said .operating gear during the revolution of the @finden sind meine inmprising a member lfiteiflly IRQ-Willi@ Wlil respect to'the cylinder, a i'ziek on .said merry her engaging with the valve operating gear? and means for moving said member laterally.

THE( )DORE i gg iongiliidim

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