US710508A - Safety-stop for automobiles. - Google Patents

Description

Patented Oc't. 7, |902..

C. A. OTT.

SAFETY STOP FOR MJTMCOBILESf (Application filed Feb. 7, 1902.)

(N0 Model.)

{ -@A IT-IEh---I-Q @hoede @M @QM UNITED STATES' PATENT OFFICE.

CHARLES A. OTT, OF PAWTUCKET, RHODE ISLAND.

SAFETY-STOP FOR AUTO-MOBILES.

ISPECFICATION forming part 0f Letters Patent No. I710,508, dated October '7, 1902.

Application filed February 7, 1902. Serial No. 93,081. (Nomodel.)

To a whom, it may concer-it; p

Be it known that I, CHARLES A. OTT, a Gill' zen of the United States, residing at the city1 of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Safety- Stops for Automobiles, of which the following is a specification.

This invention relates to a safety-stop device adapted to control steam or gasolene used to propel automobile vehicles; and thecobject of the invention is to provide a simple and efficient device to prevent the running away of the vehicle when the motorman leaves they machine.

The invention consists in a tubular casing having a transverse partition provided with a port, said casing having an inlet for the passage of steam through said port and a throttlc-valve actuated by a hand-lever to open or close the said port, in combination therewith, of said casing having a transverse partition in the rear of the Iirst-aforesaid partition and provided With a port, a rod mounted in the casing and having vertical movement therein, a valve-disk rigidly secured upon said rod and located beneath the port of the last-aforesaid partition of the casing, a cross-lever'connected to the upper end of said rod andhaving its forward portion pivotally connected upon an arm integral with the casing and the rear portion of said cross-lever terminating in a wide blade, and a seat rigidly secured upon the blade portion of said cross-lever, with a spiral spring surrounding the said rod and interposed between its valve-disk and said casing, respectively, adapted to close the port of said valve-disk and hold the said seat in its normal position, as hereinafter fully described and claimed.

In the accompanying sheet of drawings, Figure l represents a vertical sectional side view of the safety-stop, taken in line :c of Fig. 2 and showing the seat in its normal position, as when the propelling power is shut off from the driving mechanism of the vehicle. Fig. 2 is a rear end elevation ofthe safetysi'op; and Fig. 3 is a vertical sectional side view of the safety-stop, showing the seat depressed, whereby the propelling power is free to drive the mechanism to move the vehicle.

Similar letters of reference indicate similar parts in the different views of the drawings.

Acdenotes a tubular casing adapted to extend in a horizontal position and longitudinally of the vehicle and having side extensions a a, provided with openings to receive -bolts a a', which secure the casing to the base-plate or floor a?, as indicated by broken lines in Fig. 2. 'This casing has a steam-passage which is divided by two partitions I) and Zi' to provide three chambers c, c', and c2 in the casing. The partition b is provided with a centrally-circular opening to form a communication between the chambers c and c' of the steam-passage, and surrounding the said opening is a beveled valve-seat d, against which a circular beveled valve-disk d rests in closing the opening. The valve-disk d is rigidly vsecured upon the end of a rod d2, that projects from the casing, and said rod is mounted in a tube e, having an exterior screw-threaded portion e to engage a threaded opening formed in the front end b3 of the casing.

fis a packing-ring interposed between an enlarged head e2, integral with the outer eX- tremity of the tube e and front end of the casing. The tube e is rigidly secured to the casing,ca'nd the projecting end of the valverod cl2 is connected by a pin g to the lower end portion of the usual hand-lever h, that is pivotally connected upon a fixed point of fulcrum i, integral with the casing or otherwise secured to the bodyv of the steam-vehicle.

The casing A has a projecting annular angej to form an inlet-passage for the steam, and a pipe j connects from said flange to a boiler. (Not shown.)

In the ordinary arrangement of parts for operating the throttle-valve as described when the motorman opens 'the said valve by the hand-lever the steam or gasolene leaves the port d and passes direct to a pipe 3'2, which is connected to the rear of the casing and carries the propelling power to the engine. (Not shown.)

The aforesaid description of parts for operating the throttle-valve I d0 not claim eX- cept in conjunction with the parts embodying my invention and which I will now explain.

The casing A is provided with a secondary partition b', situated in the rear of the partition l) for the throttle-valve, and said partition b divides the casing, so to provide IOO IOS

chambers c' and c2 in the casing, and takes a course from the bottom of the casing to mid- Way ofthe same, thence in a horizontal plane, and nally tothe top of the casing. The horizontal portion of this partition b is provided with a circular opening forming a communication between the chambers c and c2, and surrounding the said opening is a beveled valve-seat 7c, against which a beveled valve-disk 7o rests against in closing the opening of the said partition b. The valve-disk la is rigidly secured upon a centrally-vertical rod Z, movable in the casing, and the lower portion of this rod projects from the said valve-disk to enter a centrally-circular aperture Z of a supporting-plug m, which is provided with an exterior screw-threaded surface m to engage a threaded opening formed in the bottom of the casing.

f is a packing-ring that is interposed between the casing and an enlarged head m2, integral withthe end of the said plug.

A stuffing-box n is secured to the casing and surrounds the outer projecting portion of the rod Z, and the upper end portion of this rod is connected to a cross-lever o by a pin o', and said cross-lever has its forward portion pivotally connected on a pin o2 of an arm p, integral with the casing, While the rear portion of the said cross-lever terminates in a wide blade 03, so to expose a large bearingsurface and upon which blade is rigidly secured the seatq for the motorman, and this seat is held in its normal position, as indicated in Fig. l, by a coil-spring fr, which surrounds the rod Z and interposed between the bottom face of the valve-disk la and top face of the plug 'm of the casing. The moment the operator rises from his seat the coilspring r automatically cuts o the passage ot' steam to the engine by its tension against the valve-disk Zt', which closes its port-opening, and simultaneously with the closing of the port the spring-actuated rod Zcarries the seat q by its connection with the cross-lever 0 to its normal position, as shown in Fig. l.

It is readily understood by this construction and arrangement of parts that it is impossible for the machine to run away when the motorman leaves the vehicle, and should the hand-lever t be tampered with during his absence, so as to throw open the throttlevalve d", the steam or propelling power can get no farther than the chamber c of the casing, thus preventing the engine from moving the machine. When the motorman takes his seat, he by his weight depresses the seat from its normal position, as indicated by broken lines shown in Fig. 3, and which movement opens the valve k', after which he will pull the hand-lever to the'dotted position shown in said igure to open the throttle-valve d and allow the propelling power to pass through the ports of the casing direct to the engine.

Having described my invention, what I claim is- 1. In a safety-stop for automobiles, a tubular casing having a transverse partition provided with a port, an inlet in the casing for the passage of steam through said port, a throttle-valve mounted in the easing, and a hand-lever to actuate said throttle-valve in the opening and closing of the said port, in combination therewith, of a rod vertically mounted in said casing in the rear of the throttle-valve thereof, said casing having a transverse partition from either side of said rod and provided with a port, a valve-disk rigidly secured upon said rod, a cross-lever connected to the upper end of said rod and having its forward portion pivotally connected upon an arm integral with the casing and its rearward portion terminating in a wide blade, a seat rigidly secured upon the blade portion of said cross-lever, with a coilspring surrounding the said rod and interposed between its valve-disk and said casing, respectively, as shown and for the purpose specified.

2. In a safety-stop for automobiles, a tubular casing having an inlet for the passage of steam, said casing divided by a partition provided with a port, a throttle-valve in said casing, a hand-lever to actuate said throttlevalve in the opening and closing of the said port, in combination therewith, of a springactuated valve-rod vertically mounted in the casing and movable in the rear of;` the throttle-valve thereof, said casing divided by a partition extending across the valve of said rod and provided with a port communicating with a chamber at each side of the last-said partition, a cross-lever connected to the outer projecting end of said rod and extending forward and pivotally connected to an arm integral with said casing, and a seat rigidly secured upon the rearward end portion of said cross-lever and controlled by a coil-spring oi said rod, as set forth.

3. In a safety-stop for automobiles,the combination ofthe tubular casing Adivided transversely by two partitions b and b/ and each of said partitions provided with a port, a throttle-valve actuated by a hand-lever to open or close the port of the first-said partition b, the rod Z vertically mounted in the casing and movable therein, a valve-disk rigidly secured to said rod, the cross-lever o connected to the said rod and pivoted upon the casing and having its rear portion terminating in a wide blade, the seat q rigidly secured upon the blade portion ot' said cross-lever, with the spiral spring r surrounding the said rod and interposed between its valve-disk and casing, respectively, to actuate in closing the port of said valve-disk and hold the said seat in its normal position, as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

ELMAR WALKER, EDWARD C. GLINEs.

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