US548340A - Reversing-gear for engines - Google Patents

Description

(No Model.)

. H. L. WILSON. RBVBRSING GEAR FOR ENGINES.

No. 548,340. Patented Oct. 22, 1895.

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HARRY L. WILSON, OF ERIE, PENNSYLVANIA.

' SPECIFICATION forming part of Letters Patent No. 548,340, dated October 22, 1895. Application filed July 2, 1895. Serial No. 554,707. I (No model.)

To will whom it mag concern;

Be it known that I, HARRY L. WILSON, a citizen of the United States, and a resident of Erie, county of Erie, and State of Pennsylvania, have invented a new and useful Im provemen-t in Reversing-Gear for Link-Motion Engines, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, making part of this specification.

The invention relates to a novel means for eifecting the adjustment of the link in a linkmotion steam-engine for starting, stopping, or reversing the movement of the engine; and it consists in the combination, with a link having a slotted cross-bar or plate, of a flexible armed lever for adjusting said link and accommodating the thrust thereof, a particular arrangement of hand-lever and rack-bar in connection with the link-lever for holding and adjusting the latter and the link connected therewith, and in certain details of construction and arrangement ofthe parts, all as hereinafter described and claimed. It will be understood from the following description, with reference to the drawings, in which- Figure 1 is a side elevation of an engine with the improved link-shifting mechanism applied. Fig. 2 shows in elevation at right angles to Fig. 1 the hand-lever for adjusting the link-lever with the weighted rack-bar in section, Fig. 3 shows the link in edge and side elevation. Fig. 4 shows the link-lever in side and also in end elevation. Fig. 5 isa plan view of the link-arm of said lever. Fig. 6 shows in side and edge views the thumblever and shoe acting on the rack-bar. Fig. 7 gives like views of the slotted link-plate, and Fig. 8 similar views of the link-lever bracket. V

1 indicates the engine-bed, 2 the steam-cylinder, 3 the steam-chest connected with the cylinder, 4 the engine crank-shaft, having the usual eccentrics 5, connected to the slotted lin Mme link being adjustable up and down on the saddle to which the valvestem 8 is connected, said parts being of the usual or any preferred construction and arrangement.

To one side of the link 7, opposite to that on which the valve-stem extends, is secured an angle-iron strap or plate 9, (see Fig. 7,) which strides the link-slot and permits the free adjustment of the link on the valve stem saddle, said plate being provided with a horizontal slot at 10, which engages a pin ll on the horizontal arm of a three-armed link-lever 12. This lever is mounted on a pivot 13, formed on a bracket-plate 14, (see Fig. 8,) secured to the engine-bed, the vertical arms of the lever extending one above and the other below said pivot. The horizontal arm oft-he lever, extendingforward in or near the horizontal plane of the pivot, is jointed or made flexible, the part 12*, which is rigid with the upright arms, being bifurcated to receive the bifurcated end of a pivoted extension of said arm, as shown in Figs. 4 and 5. The arms 15 15 of the bifurcated end of the part or extension 12 extend beyond the pivot of said part and beyond the fork in part 12, so as to form stops limiting the pivotal movement of the part 12". The pin 11 at the outer end of the part 12 of the link-lever enters the slot 10 in the link-strap 9 and serves in the adjustment of the lever to adjust the link up or down, as required, the limited flexing of the arm connected with the link accommodating the thrust of the link. I

The vertical arms of the lever 12 have eyes formed in their outer ends, to which wire ropes or rods 16 16 are connected,said ropes extending to and being connected at their other ends to the vertical arms 17 17 of an angular handlever 18, located at any required distance from the engine and pivoted to a post 19, or other suitable support, within convenient reach of the operator. The arms 17 extend one above and the other below the hand-lever pivot and have the wire ropes connecting them with the arms of the link-lever drawn taut, so that any movement of the hand-lever will be imparted to the link-lever for adjusting the link 7.

The operating-arm of the hand-lever is bent upward and is provided near its handle end with a pin 20, which engages a rack-bar 21, pivoted to the post 19, and having teeth or notches on itslower edge, adapting it to engage the pin 20 for holding the lever at any desired adjustment. The rack-bar extends forward of or beyond its pivot and has a weight 22 attached to its forward end for counterbalward the hand-lever its shoe serves to-lift the rack-bar out of engagement with the pin 20, after which the hand-lever can be freely moved forward or back for adjusting the link 7, and so starting, stopping, or reversing the This thumb-lever is so arengine in a manner that will be readily understood by those familiar with this class of engines without further description.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, isl 1. A steam engine valve'li'uk pi'ovidedwith a slotted strap or plate, in combination with a three-armed link-lever, one arm of which engages said slottedplate, and means connected to said lever for adjusting it and the link, substantially as described.

2. The combination with a steamengine valve link, of a three-armed link-lever one armof which engages a slotted platoon said link, and means connected to theo'the'r arms of said lever-for adjusting it and the link, substantially as described.

3. The combination with a steam engine valve link, of a three-armed lever for adjusting said link, the arm of the lever connected to said link being jointed to permit a limited movement of the arm to accommodate the thrust on the link, substantially as described.

4t. The combination with a steam engine valve link of the three-armed link-lever, one

arm of which is jointed and connected to said link, and a haudlever connected to said linklever for operating it and adjusting the link, substantially as described.

5. The combination with a steam engine valve link, of the link-lever, the hand lever connected to said link-lever, the pivoted rack bar engaging said hand lever, and the thumb lever, provided withithe shoe or stirrup, for releasing the hand leverand permitting its adjustment for adjusting the link lever and link, substantially as described.

In testimony whereof I have hereunto set my handthis 29th day of June, A. D. 1895.

HARRY L. WILSON. WVit nesses:

O. SWALLEY, J. MAnoHooRKoE.

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