US695291A - Locomotive front-end-coupling gear. - Google Patents

Description

N0. 695,29l. Patented Mar. ll, I902. J. F. DUNN.

LOCOMOTIVE FRONT END COUPLING GEAR. l (Application filed July 6, 1901.

(No Model.) 2 Sheets-Shaei I.

A TTOHNEYS "m: Nomgls PETERS no. Puoraumo, WASNINGTON. n. c.

No. 695,29l. Patented Mar. ll, I902.

J. F. DUNN.

LOGOMOTIVE FRONT END COUPLING GEAR.

(Application filed July 6, 1901.) (No Model.) 2 Sheets-Sheet 2.

WITNESSES: INVENTOH Mama) I By My ATTORNEYS n1: iiah'ms'vn'zns cov; momuma, WAsHINGTUN, n. c.

UNITED STATES PATENT FFICE.

JAMES F. DUNN, OF SALT LAKE CITY, UTAH.

LOCOMOTIVE FRONT-ENDJJOUPLING GEAR.

sPECIFICATION forming part of Letters Patent No. 695,291, dated March 11, 1902.

Application filed July 6, 1901- Serial No. 67,265. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES F. DUNN, acitizen of the United States, and a resident of Salt Lake City, in the county of Salt Lake and State of Utah, have invented a new and Improved Locomotive Front-End-Coupler Gear, of which the following is a full, clear, and exact description.

This invention relates to an improvement on the invention covered by my prior patent for locomotive-pilot rigging, granted July 3, 1900, No. 653,075.

The object of this invention is to provide efiective mechanism for automatically looking the coupler in elevated position, so that the accidental collapse of the coupler-supporting device and the consequent falling of the coupler will not be possible.

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

Reference is to be had to the accompanying drawings, formingapart of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the invention. Fig. 2 is a front elevation thereof, with partslin section, on the line 2 2 of Fig. 1. Fig. 3 is a detail of the lock, showing it equipped for fluid-pressure operation; and Fig. 4 is a diagram illustrating the manner of operating by said fluid-pressure.

Referring to Figs. 1 and 2, a indicates the pilot, I) the front-end coupler, c the togglelinks which sustain the coupler, and d the compressed-air or other motive-fluid piston for actuating the toggle-links, all of which form parts of the device as previously patented. The lower of the toggle links, as shown in Fig. 2, is formed in two parallel parts and has a transverse bridge 0' extending between its parts. This link is pivoted in lugs e, forming part of a plate 6. The parts of the links 0 are capable of straddling a stand f, mounted on the plate 6. Within the stand fmoves vertically a bolt g, which is pressed upward by-a spring 9' and which is normally adapted to lie in the position shown in Figs. 1 and 2-that is to say, in engagement with the rear side of the bridge 0 of the lower toggle. The bridge 0' is beveled (see dotted lines, Fig. 1) and the bolt g has the standf.

its working end similarly formed, so that as the toggle swings forward it automatically looks with the bolt. The toggle-links swing backward to lower the coupler, and when the bolt 9 is engaged with the toggle-links it is clear that they will be locked and that the breaking of the toggle and dropping of the coupler cannot be effected.

h indicates a seat which is formed on and preferably integral with the plate 6 in position to bear the weight of the coupler when it is thrown downward, all of which is indicated by dotted lines in Fig. 1.

I may provide two means for retracting the bolt 9 when it is desired to break the toggle and lower the couplerviz., ahand-operated device and a fluid operated device. The hand-operated device (see Figs. 1 and 2) comprises a lever i, which is fulcrumed on a web 6 forming part of the plate 6. This lever is projected through an opening in the standf and is engaged with the bolt 9.

i indicates means in connection with the lever 2' for manually throwing the lever, so as to move the bolt g downward and release the toggle.

In my previous patent I described an oscillating fluid-cylinder connected with the toggle to actuate it. In Figs.3 and 4 of the drawings there is illustrated a piston 9 formed on the bolt g within the cylinder-like portion f of To this cylinder leads a pipe 7c from the source of fluid-supply, the pipe entering above the piston g, so that the fluidpressure will throw the bolt 9 down. As the piston g moves to the bottom of the cylinder f it opens to the pipe 7r: a pipe 7c in communication with the cylinder f at the opposite side. This pipe leads to a port d in the cylinder d, such port admitting the pressure to the front side of the piston in the cylinder (Z. 70 indicates a pipe leading from the opposite side of the piston d. Now it will be seen that the instant fluid-pressure is admitted to the pipe 7r it will act on the bolt 9 and withdraw it, and it will subsequently act on the piston of the cylinder d and break the toggle to move the coupler d downward. When the fiuid-pressure is relaxed, the spring g acts and returns the parts to active position. These operating devices as above described may be used either separately or independently.

Having thus described my invent-ion, I claim as new and desire to secure by Letters Patent 1. The combination of a relatively stationary support, a pivoted coupler mounted above the support, togglelinks bearing between the support and coupler to raise and lower it, and a lock device pressing a member movably into engagement with one of the togglelinks, to prevent the swinging thereof.

2. The combination of a pivoted coupler, means for raising and lowering it, a lock device comprising a bolt movable into engagement with a part of said means for raising and lowering the coupler, whereby to hold the said means in active position and devices for actuating the bolt.

3. The combination of a pivoted coupler, means for raising and lowering it, a lock device comprisinga stand and a reciprocal bolt therein, the bolt being movable into engagement with the said means for raising and lowering the said coupler whereby to hold said means in active position, and for actuating the bolt.

4. The combination of a pivoted coupler, means for raising and lowering it, a fluidpressnre motor for driving said means, a

means inactive, and means for leading the fluid-pressure first to the lock device and next to the said motor,t0 successively actuate them.

5. The combination of a pivoted coupler, means for raising and lowering it, a stand comprising a cylinder, a bolt in the stand and having a piston-like portion within the said cylinder of the stand, the bolt acting to hold inactive the means for raising and lowering the coupler, and means for leading a motive fluid to andfromthe said cylinder ofthe stand.

6. The combination of a pivoted coupler, means for raising and lowering it, a plate mounted below said means and to which said means are pivoted, a lock device carried by the plate to prevent the action of the means for raising and lowering the coupler, and a seat mounted on the plate to sustain the coupler when lowered.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES F. DUNN.

Witnesses:

I. B. ()WENS, EVERARD B. MARSHALL.

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