US87353A - Improved mechanical movement - Google Patents

Description

N.PETERS. PHoToAJTrmQRAPKER, WASHINGTON. uv c.

To all whom 'it ma/y concern -with' portions ofthe its friction-clutch and connecting-hub.

4 clutches .to one drum.

l struction of mechanical mo rotary motion from pitman-rod, the forked vto the pitman, it will ro hereinafter explained ating upon the generalp operating sewing- ]GEoeGE n. Mnrrnuo Letters Patent Na. 87,353, dated Ma/rc met latent Ff GLEVELA ND, OHIO.

IMPROVED MECHANICAL MOVEMENT.

The Schedule referred to in the'se L Be it known that I, GEORGE B. Mnr'rnu, of Cleveland, in the county of Cuyahoga, and State. of Ohio, have invented a new and improved Mechanical Movement; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in whichq-v A Figure 1 is a view of one end of' the improved mechanical movements, showingthe forked pitman, balance-wheel, and one of theclutch-carryin'g drums on its hub.

FigureZ is aside I.v'i

ewof the movement cnlarged, rims of the t wo drumsfbrokeu utches therein ew of one of the dr away. to expose the c1 Figure `3 is'a face vi ums, showing Figure 4 shows 'a mode of applying three friction- Similar letters o' reference indicate corresponding parts in the several figures;

This invention relates to a new and improved couvement, which 'is especially adapted for operating vsewiug-n'iachines,but which is also applicable to velocpedes, and to machinery genexally, where it is desired-to communicate a continuous a pitman receiving a relative or reciprocating motion.

, The natu're of my invention' consists in applying loosely, upon the shaft of a balance-wheel, two hollow drums, which are constructed with grooved pulleys on'V their ,closed ends, and frictional surfaces upon the inner sides of their rims or flanges, and in employing, in combination therewith, spring-clutch arms, andaforked arms of which latter are consaid drums by means of cords, giving a reciprocating motion tate the said drums in opposite and at every stroke communicate shaft a rotary impulse, as will be neeted to the pulleys of in such manner that by directions alternately, to the balance-wheel 'I o enable others skilledin invention,.I will describe its co Before describing my impr that-I am aware that a v`ari the art to understand my nstruction and operation. ovement, Idesire to state etyof contrivances, operrinciple of the mechanical movement, hereinafter described, have been used for converting motion, and I do not claim broadly the principle of giving a rotary motion to a shaft by means of a rectilinear-moving rack, or a frictional pitman.

My object is, as will be` hereinafter made evident, to obtain such a mechanical movement as is free from many of the objections heretofore attending it,and which may be practicallyand ,advantageously usedfor machines, velocpedes, and other mamooth and regular rotarymotion is chines where a s required.,

In the accompanying drawingsfticular, and have groove outer or closed ends,

pressl at proper' times,

.in this figure itwill be or stud c, which keys this etten; Patent and making paxtof the same.

g balance-wheel P, and arings N', which latter may A represents a shaft carryin suitably supported in 4be represent the frame of a ants of a velocipede. l.

On this shaft, I loosely apply two cylindrical drums B B,'with the edges of the flanges of their open ends nearly touching each o'ther, as shown'in g..2.

These two drums are constructed alikein every pard pulleys E E' formed on their adapted to receive respectively an drums B B', ce, b b', is apagainst which clutching-dogs g g', are caused to arm of a-pitman-rod Upon the inner surfaces of the dan leather, rubber, plied, for aifordi two o'r more ser ges of or other suitable substau ngsoftfriction-surfaces, frated These dogsg g' are are yformed on them, 'levers G Gf, which latt formed on a hub, D, that is ma within the two drums B B. In g. 3, I have shown clearly the manner of arranging the clutching-parts within one of the drums, and seen that the shortest arm of the 'dog-carrying lever G isacted upon by a spring, J, which is attached to the hub D, by the same pin,

hub to its shaft A. the short arms of both levers and presses the dogs g g/ outu-surfaces b'of their respectpivoted at t t', by ribs h| h, which tothe ends of their respective This spring acts upon G G', as shown in fig'.- 2, wardly against the frictio ive hubs B B'.

' The dogs g` g are both ment of a circle, havin diameter of its drum.

Each dog has teeth formed which, with the friction-surfac from slipping when turned in such drum is turned in an opp J will yield, and allow it to tur Each one of the pulleys u of-a drum, has three annular adapted for receiving the three cords which attach` it to its arm of the pitman-rod F, as shown in figs. 1 and 2'.

The pitman-rod F is constructed with two arms, 0 O, of suitable length, which-are parallel to each other, but connected by a head, C2, to rod F, in such manner as that one arm, G, lies dat upon the pulley E', and the other arm, C, is held up beneath the opposite pulley E. Thus, when said arms are connected by cords a, a to their respective pulleys, one of the drums will be moved in an opposite direction to the other drum during each stroke of ythe pitman-rod.

The cords a a are woun alike, and each` dog is the' segg the same radius as the interior upon itsV biting-surface, e, will prevent its drum o'ne direction, but when osite direction, the spring n freely around its shaft A.

grooves in its periphery,

d around their respective pulleys, and attached to their respective arms in such manner, that each arm will rotate its respective drum and pulley, moving both .forward and backward.

The operation is as follows When the pitmanrod F is moved forward, or toward sewing-machine, o r the pendas Will be hereinafter explained.-

erare pivoted ats' vs,to lugs ce e, de fast to the shaft A,

pon the outer yclosed ends" the shaft A, the cordattachment ai, on arm 'G of said I' receive another impulse, in the same direction as before,

from the arm C acting upon its drum B, through the medium of cord u.

In this way, and hy this arrangement, a continuous rotary motion in one direction can be given to the shaft A, by a reciprocating movement of the pitman, and said Ashaft will receive an impulse at every stroke of the pitman.

In fig. 4, I have represented three separate clutching-dogs g g g, with their respective arms Gr G G and spiings J J J applied to a hub,D,1 on shaft A, so as to operate upon the friction-surface b of a. drum, B. 1 do not therefore conne myself toa single clutching-dog, g, as shown in iig. 3, as more than one can be employed whenever desired.

The object of using three cords .on each pulley, is to have one cord act between or in the middle of two cords, so that the cords will draw evenly upon their F is drawn backward, the ydrum` B pulley during both Strokes of each pitman-arm; also, i

to have the single cord of each pulley act when its pulley slips upon the shaft, and to have the two cords to act when the drum of their pulley engages with the shaft. v

By these means, I obtain the strength of t-wo cords 'for driving the shaft, and use the single cords when their respective pulleys are turned loosely backward.

- Having described my invention,

What I claim as new, and desire to secure by Let; ters Patent, is- K 1. The combination of drums B B', applied loosely upon shaft A, and constructed with pulleys E E and internal fiiction-surfas, arms G O, pitman F, dogs g g' applied on arms G G, spring J, hub D, and' shaft A, substantially as described.

2. The combination of the serrated dog or dogs g,

'pivoted to an arm, G, which has its fulcrum upon a buh, D, made fast to shaft A, and Banged drm B, constructed with a pulley, E, and connected to a pitman by means of cords a, substantially as and for the purposes described.

1 GEO. R. MET'IEN.

Y Witnessesz C. M. STONE, GEO. F. RANsoM.

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