US787033A - Trolley-stand. - Google Patents

Description

No. 787,033. PATENTBD APR.11,1905.

.- B. A. GRASBERGER.

TROLLEY STAND.

APPLICATION FILED JAIL 23, 1904.

FIG. I

WITNESSES: I W?" tical plane.

UNITED STATES Patented April 11, 1905.

BONIFAOE A. GRASBERGER,- OF RICHMOND, VIRGINIA.

TROLLEY-STILAND.

SPECIFIGATIONfOrming part of Letters Patent No, 787,033, dated. April 11, 1905. Application filed January 23, 1904. Serial No. 190,301.

To all whom, it may concern:

Be it known that I, BONIFACE A. GRAs- BERGER, a citizen of the United States, residing in the city of Richmond and State of Virginia, have invented certain new and useful Improvements in Trolley-Stands; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

This invention relates to trolley-stands; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a sideview of the trolley-stand. Fig. 2 is a plan view of the same, partly in section.

A is a stationary base-plate, which is secured to the top of the car.

B is a base-plate which is pivoted to the base-plate A by a pin 1) or any other approved means, so that the plate B can be swung around in a horizontal plane to reverse the trolley.

C is the trolley-pole, and c is the usual trolley-head carried by the said pole and pressed into enga ement with the conductor or wire. The tro ley-pole C is secured to a socket-plate E, which is pivoted to the baseplate B by a pin e, so that the trolley-pole and its socket-plate can move freely in a ver- The base-plate B is preferably provided with lugs e, and the lower part of the socket-plate E is pivoted on the pin e between the said lugs e.

F and G are toggle links or levers. Two links F are preferably provided and are pivoted to the socket-plate E by a pin f above the said pin 6. The links F are pivoted to the link G by a pin 9 at the bending-point 0rknee-point of the toggle links or levers. The free end of the link G is provided with a cross-bar H, which slides in guide-slots h in the sides of a pocket h on the end portion of the base-plate B.

I represents fastening-lugs on the baseplate B, and i represents springs which eX-- tend between the fastening-lugs and the end are provided with screws 71 or other approvedmeans for adjusting their tension, and they operate to press the trolley-head upward into engagement with the line-wire.

J is an adjustable stop on the under side of the link G, which bears against a boss 3' on the base-plate Band which normally holds the center of the pin g a little below a line drawn through the centers of the cross-bar H and the pinf.

K is an adjustable tappet secured to the socket-plate E below one of the links F, and 7c is a similar adjustable tappet secured to the said socket-plate above the said link. The socket-plate E is provided with slots 7c,

. which permit the positions of the tappets to be adjusted in a vertical direction; but the tappets may be made adjustable in any other approved manner.

The springs and the stop J normally hold the parts in the positions shown in the drawings, and the cross-bar is free to slide longitudinally in its guide-slots, so that the trolleyhead may adapt itself to the line-wire. When the trolley-head leaves'the line-wire and flies upward, the tappet K strikes the link F and moves the center line of the pin 9 upward, so that the toggle links or levers are doubled up by the springs, and the trolley-head drops down into a position in which it will not strike any ofthe supports which hold the line-wire in position. The'tappet 7c is for setting the links by pulling down the trolley-pole.

What I claim is 1. In a trolley-stand, the combination,

base-plate, and a trolley-pole carried by the said plate; of toggle-links pivoted at one end to the said plate, a spring between the other end of the said links and the said base-plate, and a tappet on the said plate which doubles up the said links automatically when the trolley-head leaves the line-wire.

2. In a trolley-stand, the combination, with a base-plate, a plate pivoted to the said base-plate, and a trolley-pole carried by the said plate; of spring-pressed toggle-links pivoted to the said plate, a stop on one of the said links which normally bears on the said 5 with a base-plate, a plate pivoted to the said 9 portions of the cross-bar I-I. These springs base-plate andholds the links substantially I00 trolley-pole is pulled down.

4. In a trolley-stand, the combination with a base-plate provided with guide-slots at one end, a plate pivoted to the other end of the said base-plate, and a trolley-pole carried by the said plate; of toggle-links pivoted at one end to the said plate, a crossbar at the other end of the said links which slides in the said guide-slots, springs arranged between the said base-plate and the ends of the said cross-bar, a stop which normally holds the toggle-links substantially in line, and a tappet on the said plate which doubles up the links auton'iatically when the trolleyhead leaves the linewire.

5. The combination, with a base-plate, and a pole-support pivoted thereto; of togglelinks pivoted at one end to the said pole-support, a spring arranged between the other end of the said toggledinks and the said baseplate, means for preventing the said togglelinks from folding dowmvard and a tappet which moves with the said pole-support and which folds the said toggle-links upward when the trolley leaves the line-wire.

In testimony whereof I have allixed my signature in the presence of two witnesses.

BONIFACE A. GRASBERGER.

itnesses:

R. R. FLoRANcE, J. KENT RAWLEY.

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