US952565A

US952565A - Gyratory machine.

Info

Publication number: US952565A
Application number: US46020508A
Authority: US
Inventors: John Fraser
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-10-30
Filing date: 1908-10-30
Publication date: 1910-03-22
Anticipated expiration: 1927-03-22

Description

JOHN 23,5558, 0l MILWAUKEE. WIBGONBIN.

G'YBATGBY MACHINE.

Ipeaimtion of Letten Patent.

Application led october 30.

Patented Mor. 22, 1910. isos. serial No. 460,205.

To all whom it may concern:

Be it known that I, Joins Fransen: a citizen ofthe United States, residing at Milwaukee, g in the county of Milwaukee and State of i Wisconsin, have invented certain new and useful Improvements in Gyratory' Machines, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

This invention relates more particularly to freely suspended or supported gyratory in achines of the class shown and described in application Ser. No. 322,149 filed June 18, 1906.

The main objects of the present invention are tcmore evenly balance a machine of this kind when it is at rest around the central weighted shaft or axis, so that in starting and stopping its gyratoi'y orbit will increase and diminish more gradually u s the speed of said shaft increases and diminishes; to provide for shiftin centrifu al weights of greater mass, ang a. more e ective and advantageous arrangement of springs and guides; and generally to improve the construction and operation of the means for producing and determining the gyratory movement of machines of this class.

It consists in certain novel features of construction and in the peculiar arrangement and combination of parts as hereinafter particularly described and pointed out in the claims.

In the accom anying drawing like characters designate t e same parts :in both figures.

Figure 1 is a central vertical section of a gyratory bolting machine enibodyin the present invention, the sieves being omitted; and Fig. 2 is an enlarged plan View of one of the shifting weights with its connections and associated parte for varying and regulating the ratory movement of the machine in stopping and starting.

Referring to Fig. 1, c designates the caso l or frame-of the halting machine, which is freely suspended by jointed or flexible hangers l;2 from a ceiling or overhead support o, 1 and 1s provided at or near the center with bearings d for a vertical rotary shaft e. This s aft is provided with a pulley f which 5 is connected y a belt. g runnin on guide pulleys h attached to the case or rame, with a suitably located driving pulley, not shown. 1'

On the shaft e above and below the case a cross heads formed centrally on one side with hubs 7' which are secured on said shaft by set bolts or other suitable means.

Radially movable shifting weights Z are mounted on parallel guide rods m, which are secured nt their inner ends in the cross heads 2'. These rods are connected and held in the proper relation to each other at their outer ends by cross pieces n. The middle rod of each roup projecting radially from the hub j cig the associated cross head z', is located above or below the plane of the outer rods, and thus forms therewith and with the connecting cross piece u, u still' self-bracing supporting and guiding structure for the shifting weight mounted thereon.

Two parallel rods o, passing loosely through euch cross head if on opposite sides of the shaft c, are secured at one end in the associated weight l, und ut their opposite ends are connected by a plate or oke i. Spiral compression springs f2 cucire ing t e rods o between the cross head z' and the plate p, tend to draw and hold the weight l against the cross head z'. A third rod r is preferably secured at one end in the cross head t midway between and parallel with the rods o, and passes loosely through an opening in the plate or yoke p, which serves as a guide therefor, and a spring ff surrounding this rod between said cross head and plate cooperates with the other springs to draw the weight l toward the shaft c und to afford a veldin g resistance to the outward movement of said weight by' centrifugal force when the shaft c is rotate The plate p is udjustablv secured on the rods o by nuts, and affords means for adjusting thc tension of the springs q. l

The outer guide rods m are adjustable collars s secured t screws t and serving as stops provided with iereou by .set for limiting ,the outward nioveuient of the weights l.

The weights l are preforuhlr' cut away or recessed us shown. so that when they ure thrown to the outer limit of their movement they will extend over the collars x.

'lho cross heads e' are preferably counterhored to form sockets for the springs around thc rods o and r, so us lo admit ci shortening said rods iu connection with springs of :l given length.

The weights l, which are heavier than thc cross heads 1i, aro cut away on their inner 55 are mounted parallel with euch other, two I .sides hotwoon the rods n. as shown in Fig. '2,

llt

y :to ,tit over 4the habe-5j of the associated creas 4houle a', that when the nnuizhine is arrest und said weights are held bythe spain s y iu their inner positions, the machine wi4 be apprrmiuately iu balance around the axis of the Shaft e, the cross heads i' acting ascoiin terweights with respect to the shifting weights l.

The machine operates as follows: .In starting, the shifting weights l being held by the springs g at the linut of their inward movement close to the cross heads or counter wei hts '5, the axis of the shaft c will at first be 'xed or describe a very small gyratory circuit, but as the speed of the shaft increases, thc .weights l will be gradually Inoved away from it. by increasing centrifugal force against t-he resistance of the springs y; the center of gravity being thus gradually shifted away from the axis of the shaft e, the latter with the freely suspended case Vor frame in which it turns, will be caused to gyrate in a gradually enlarging circuit about an axis coinciding wit-b or assing through the center of gravity. iJVhen the shaft e attains its full normal speed, the outward movement of the Weights l is arrested by the adjustable collars or sto is s, and the or frame a., with its loaf, gyrates about its center of gravity, which is determined or modified by the posi tion of said Weights relative to the axis of said shaft. The center of gravity ot' the machine being thus gradually shifted away from the axis of the shaft e, and the gyratory orbit or circuit increasing gradually from zero to its full or normal limit, the center of gravity or normal axis of ration will never cross the path of gyratlon, and the erratic movements and consequentshock and jar to the machine and its supporting connections, which would occur if the weights were permanently adjusted to produce the normal gyratory circuit, are avoided.

In stopping, as the rotary speed ofthe shaft e and the centrifu al force acting on the wei bts l are reduced, the weights l are gradua y moved inwardly toward said shaft, the center of gravity of the machine gradually approaches the axis of the shaft and the Uyratory orbit or circuit described hy said s aft gradually diminishes until it finally comes to rest when the weights rc sinne tli'cir initial positions, and the axis of gvrntion or the center of gravity of thc nur c line coincides with the axis of said shaft. 'lhus in stopping as in starting, erratic movements and consequent shock or jar to the machine are avoided, and a cushion. guide or other means for confining the niovement of the machine within certain limits, is dispensed with.

i Various changes in the details of construetionnnrl arrangement of parts may be made i "reageer without departing from the principle and swipe ort the invention.

., claim:

l. In n gyratoiy machine the couihinaton with a member capable of free gyratory movement in an approximately horizontal plane, of a vertical rotary shaft centrally )ournaled in sind member and provided on one side with a counterweight, a radially shift-ing weight on the opposite side of said shaft, and a spring tenduiig to move said shifting weight toward sai counterwcight, substantially as described.

2. In a gyratory machine the combination with a member capable of free gyrato movement in an approximately horizontal plane, of a vertical rotary shaft centrally {ournaled in said member, a counterweight lavng a hub on one side secured on said shaft, guides extending transversely from said counterweight on opposite sides of its hub, a radially shiftin weight mounted-on said guides and recesso on the inner side to pass over said hub close to said counter- Weigl1t, and a spring tending to move said shifting weight toward the counterweight, substantially as described.

3. In a gyratory machine the combination with a member capable of free gyratory movement n an approximately horizontal plane, of a. vertical rotary shaft centrally jonrnaled in said member, a counterweight secured to one side of said shaft, guides extending transversely from said Weight on opposite sides of said shaft and provided with adjustable stops, a radially shifting weight mounted on said guides between sai stops and counterweight, and a spring tending to move the shitln weight toward the counterweight, substantially as described.

In a gyratory machine the combination with a member capable of free gyratory movement in an aproximately horizontal plane, of a vertice rotary shaft centrall Journaled in said member, a cross head en counterweight secured to said shaft on one side thereof, guides extendin transversely from said cross head, a. raiially shifting weight mounted on said ides on the op posite side of the shaft om the counterweight, rods secured to the shifting weight and passing loosely through the counterweight parallel with said guides on oppositie sides of said shaft, and spiral springs mounted on said rods between the counterweight and seats on the outer ends of the rods, substantially as described.

In a gyratory machine the combination with n member capable of free gyratory movement in nn. aproximatiely horizontal plane, of a vertice Journaled in said member, a cross head and counterweight secured to one side of said shaft, parallel guides oxtendini laterally from sind cross head, a radially shifting rotary shaft centrally gli l. having adjustable .spring sente -atj their outer ends, and' spira-l sprmgs mounted on Saul rods between said cross head and seats, sub stautally as described.

In a gyratory machine the combination with a member capable of free -gyratory 3 movement in an a proxlmately horizontal g plane, of a vertica rotary shaft centrally )carnaled in said member and provided on one side with a cross head and counberweight, parallel ides extending laterally from said cross end in dierent vertical and horizontal planes, a radially shifting weight mounted on said ides, and springs tending to rnove said s iftng weight toward said cross head and counterweight, substantially as described.

T. In a gyratory machine the combination with a member capable of free gyratory movement in an a proxima-tely horizontal plane, of a vertice rotary shaft centrally journaled in said member and provided on one side with a cross head and counter weight, parallel guides extending laterally from said cross head in different vertical and horizontal planes, adjustable stops mounted on certain ides, a radially shiftin weight mountefdn said guides and recesse on the inner side to pass around 1 Said a volge adj ustablv mounted on the outer ende o said rods, am spiral springs mounted on movement, of a vertical .rotary n aled 1n said member and provided on one guides on opposite sides of the shaft,

said rods between said yoke and cross head,

laulostantally as described.

8. In a gyratory machine the combination with a member capable of free gyratory sha t jourslde fvith a connterweight and on the oppo- .site 51de with a radially shift-ing weight, pari allel rods attached to said shifting weight and passing loosely through said counter-weight un opposite sides of said shaft, a yoke con necting said rods at their Outer ends, a rod attached to said eounterweight between and arallel with the other rods and passing oosely through said yoke, and spiral springs mounted on said rods between said yoke and counterweight and tending to move the shifting weight toward the counter-weight, substantially as described.

In witness whereof I hereto affix my signature in presence of two witnesses.

JOHN FRASER. Witnses:

W. C. BANKS, lV. A. Waouh.

ahafztjeloee to the cross head. rods se eared to the shifting weight and sin loosely through the cross head parel el wit