US282487A - Speed-indicator - Google Patents

Description

(No Model.)-

T. BLANOHARD.

SPEED INDICATOR. No. 282,487. Patented Aug; T 1883;

IlIllllIIllIlIlIllllll 45 a sleeve down or in the direction of the body A.

UNITE STATES- ,PATENT QFF'ICEO,

THOMAS BLANGHARD, or s'roUeHroN, MASSACHUSETTS.

SPEED-INDICATOR.

SPECIFICATION forming part of Letters Patent No. 282,487, dated August *7, 1883.

Application filed March 99,1883. (No model.)

To all whom it may concern:

Be it known that I, THOMAS BLANOHARD, of Stoughton, in the countyof Norfolk, State of Massachusetts, have invented acertain new and useful Improvement in Speed-Indicators,

of which the following is a description suffi-, I ciently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and usethe same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure 1 is an isomctrical perspective View, representing the indicator in use; and Fig. 2, a side elevation, showing the dial mechanism and counter-balance.

Like letters of reference indicate corresponding parts in the different figures of the drawings.

My invention relates to that class of indicators which are employed for indicating the a. speed of shafting machinery, &c.; and it consists in a novel construction and arrangement of the parts, as hereinafter more fully setforth and claimed, by which a more effective device of this character is produced than is now in ordinary use- The nature and operation of the improvement will be readily understood by all conversant with such matters from the following explanation, its extreme simplicity rendering an elaborate description unnecessary.

In the drawings, A represents the body of the indicator, in which the shaft B is journaled vertically, and provided with the whirl 0. Attached to the upper part of the shaft, and arranged to turn with it, there is a cross-bar,

D, carrying the armsE, which are jointed to the bar at w, and provided at their outer ends with the gravitating balls G. A. sleeve, H, is fitted to slide on the shaft, the upper end of the sleeve, 011 either side, being connected to the arms E by the jointed bars J, and a spring, K, interposed between the sleeve and bar D, the spring acting expansively to force the A swinging bracket, L, resting on a shoulder or bearing, 4, 011 the body A, is fitted onto the hub 5 and provided with the. set-screw m. This bracket has an upwardly-projecting arm, M,

I at its outer end, in which there is a shaft, N,

I j ournaled horizontally,and carrying at one of -with an annular groove near its lower end, and

in this groove is fitted to work the loose collar Q. A bifurcated lever, B, is pivoted to the collar by the screws a a, its outer end being provided with a stud, 9", which is fitted to work in a hole in the collet 1? without being withdrawn therefrom as the sle'eveH rises and falls on the shaft 13. Attached to the outer end of thebracket Mthere are two arms, 01 (l, and j ournaled horizontally therein. is a shaft, S, provided at one of its ends with the spur wheel T, and at its other with the pinion c, which intermeshes with the segment 0. Pro jecting laterally from the lower part of the bracketM there is an arm, U, carrying at its I outer end the dial-plate WV, the plate being rigidly attached thereto. An arm or bracket, Y, is secured to the inner face of the dial, and journaled horizontally therein, and in the plate W there is ashaft, Z, carrying at one end the index or hand f, and at the other the pinion 9, which intermeshes with the spurwheel T. The dial-shaft Z is provided with a cord, h, and counter-balance Z, to keep the pinion g in close contact with the wheel T, thereby preventing all backlash, and steadying the hand f. The dial-plate is marked, with numbers and fractional parts thereof, as shown in Fig.

1, commencing at zero or naught and ending with 100, counting in either direction from the top. It is also prominently marked with the words fslow and fast, and with arrows indicating in which directions the hand must move to correspond therewith.

In the use of my improvement the indicator is placed in any convenient position and con nected with the machine with which it I is to be used by means of'a belt passing around the whirl or small pulley O. The whirl being secured to the shaft B, when power is applied to the same the shaft will be revolved, causing the balls G to be thrown outward, thereby drawing up the sleeve H, causing the lever B to turn the shaft N, and through the segment 0 and intermediate gearing moving the hand f over the dial WV, to indicate the speed in a manner which will be readily obvious without a more explicit description. The bracketL being loose on the. hub 5, and the collet Q on I the sleeve H, permits the dial to be adjusted or set to face in any desired direction to accoinmodate the workman or person whose duty it is to watch the indicator. r

I am aware that the body A, shaft B, whirl O, sliding sleeve H, spring K, bars J, arms E, and balls G are common to most centrifugal or ball governors for steam-engines, and I do not, therefore, claim the same when in and of themselves considered; but,

Having thus explained my invention, what I claim is-- 1. In a speed-indicator, the bracket L, shaft -N, segment 0, shaft S, spur-wheel T, pinion o,

shaft Z, pinion hand f, and dial W, in coinbinationwith means for supporting the bracket, and with operative mechanism, substantially as set forth.

2. The improved speed-indicator herein described, the same consisting of the body A, shaft 13, whirl O, sleeve H, collet Q, bars J,

arms E, balls G, lever B, collet P, shaft N, segment 0, pinion 1;, shaft S, wheel T, pinion g, shaft Z, weight Z, cord' h, dial WV, hand f, and

brackets Y M, constructed, combined, and ar- 2 5 ranged to operate substantially as set forth. THOMAS -BLANCHARD. WVitnesses:

O. A. SHAW, L. F. SMITH.

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