US716722A - Operating means for speed-indicators. - Google Patents

Description

Patented- Def-:.- 2'3, 1902.

nvr/Nros flare/zeef eZ/y An ys (Application flied Nov, 14, 1901.)-

c E KELLY OPERATING MEANS FOB'SPEED INDIGTRS. K

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CLARENCE E. KELLY, OF ANDERSON, INDIANA, ASSIGNOR OF ONE-HALF TO WILLIAM H. FORSE, JR., OF ANDERSON, INDIANA.

OPERATING MEANS FOR SPEED-INDICATORS.A

SPECIFICATION forming part of Letters Patent No. 716,722, dated December 23, 1902. Application filed November 14, 1901. Serial No. 82,206. (No model.)

To @ZZ whorrt it may concern.:

Be it known that 1, CLARENCE E. KELLY, a citizen of the United States, and a resident of Anderson, in the county of Madison and-State of Indiana, have invented a new and Improved Operating Means for Speed-Indicators, of which the following is a full, clear, and exact description.

This invention relates to a means for transmitting movement to a speed-indicating device-such, for example, as that disclosed in my copending application, Serial No. 82,203, filed November 14, 1901.

This specification is a specific description of two forms of the invention,while the claims are definitions of the actual scope thereof.

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

Figure 1 is a side view of the invention. Fig. 2 is a top view thereof. Fig. 3 is a section showing the interior of the casing, and Fig. 4 is a similar view showing a modified form of the invention. i

In the drawings, ct may be taken to indicate any known means for imparting a longi-4 tudinal movement to the shaft a', such movement being in time with the movement of the part whose speedris to be measured. An example of such means ct may be seen in my copending application for patent on speed-indicators, Serial No. 79,169, filed October 18, 1901.

Referring to Figs. 1, 2, and 3, the shaft o. extends into a casing b, which casing is held stationary by a clamp or bracket f, and from the casing b a shaft c extends at right angles to the shaft a. This shaft c is adapted to be turned to transmit its movement to the speedindicator proper. (Not shown.) On the shaft c, within the casing b, is an arm c', and this arm is engaged by the shaft a', so that upon the reciprocationof this shaft the shaft c will be turned. d indicates a leaf-spring which bears against a pin a2 on the shaft a. The tension of this spring d is controlled by a cam e., fastened on an arbor c. The arbor is mount-ed to turn in the casing h and is provided (see Fig. 2) with a finger e2, located outside of the casing b, but within an auxiliary glass-covered case e3. (See Figs. 1 and 2.) The top of the casing c3 is removably held in place by screws or other fastening devices c, and by removing this top the finger c2 may be reached and the cam e adjusted, so as to vary the tension of the spring cl in accord with the conditions under which the wheel a, is rotated.

' Fig. 4 illustrates a modification of the invention, in which the shaft o. of the wheel o'. acts on a bell-crank lever c2. This lever is fulcrumed at the point c3 and has a toothed sector c4 meshed with a pinion c5 on the shaft c. d' indicates a helical spring which is connected to the bellbranl; lever c2 and serves the function of the spring cl in Figs. 1, 2, and 3, before described. This spring is adjusted by means of an arbor e5, to which its inner end is attached, such arbor being arranged exactly the same as the arbor e', before described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. An operating means for speed-indicators, comprising a casing or support,a shaft mounted to reciprocate therein, means for moving said shaft inward, a spring tending to move the shaft outward, a second shaft for transmitting the movement of the first-named shaft, said second shaft being mounted in the casi-ng at an angle to the first shaft, means connecting the two shafts to transmit to the second shaft a rocking movement, means forv varying the tension of the spring, said means including an arbor mounted in the casing and extending outward therefrom, and a finger attached to the arbor outside of the casing to permit manually operating the same.

2. An operating means for speed-indicators, comprising a casing or support,a shaft mounted to reciprocate therein, means for moving the shaft inward, aspringA tending to move the shaft outward, a second shaft for transmitting vthe movement of the firstnamed shaft, said second shaft-being mounted in the casing at an angle to the first shaft, means connecting the two shafts to transmit to the second shaft a rochingmovement, means for varying the tension of the spring, said means including an arbor mounted in the casing and IOO extending outward therefrom, a finger atname to this specification in the presence of taehed to the arbor outside of the casing to per-v two subscribing witnesses. mit manually operating the same, and an auxiliary oasingoarried byhthe first-named casing CLARENCE E' KELLY' 5 and having a removable top or cover, said Witnesses:

nger being located in the auxiliary casing. MARTIN L. CROMES,

In testimony whereof I have signed my MARC RYAN.

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