US1190922A - Trolley. - Google Patents

Description

M. LEV, la.

TROLLEYl APPLICATION l'lLED JUNE 28| 1915.

Patented July 11, 1916.

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1VIARK LEV, J' R., OF NEAR LOS ANGELES, CALIFORNIA.

TROLLEY.

Application filed .Tune 28, 1915.

This invention relates to improvements in trolleys, and relates particularly to an improvement in the present style of trolley to increase the efiiciency of electrical contact with the revolving trolley wheel.

In carrying out myrinvention, I provide a mechanism whereby such a device as is shown and described in my Patent No. 1,140,689, issued May 25th, 1915, may be applied to an ordinary trolley without any material change therein. I thus provide for the use of existing trolleys and, by the addition of a certain simple mechanism, make these trolleys efficient in their operation. The mechanism by which I accomplish these results is described in detail in the following specification, in which- Figure 1 is a vertical section of my improved trolley construction, Fig. 2 is a side elevation of the same, Fig. 3 is a horizontal section taken as indicated by line 3 3 on Fig. 1, and Fig. 4 is a detail cross section taken as indicated by line 4-4 on Fig. 3.

In the drawings the numeral 10 designates an ordinary trolley harp of typical design, having a lower socket 11 adapted to fit upon the usual trolley pole. This harp has two furcations 12 and, according` to my vinvention, has a hollow wheel shaft 13 carried between the furcations in the manner shown. I replace the ordinary wheel shaft with the shaft 13, which shaft isrlongerthan thel ordinary shaft and projects on veach side of the harp as is clearly shown in Figs. 1 and The shaft 13 is hollow for holding a lubricant and has lubricating holes 14 to lubricatethe wheel and the contact plates or washers 15. The contact washers' 15 lie one on each side of the wheel hub 16; and these washers have extensions 18 which project through the furcations of the harp and are engaged on the outside faces of the harp by the iiat springs 19. It is one of the particularly objectionable features of the ordinary trolley that the springs 19 lose their strength, or become bent or broken or burned away on the trolley, leaving the washers without any means for pressing them into good electrical engagement with Specification of Letters Patent.

Patented July 11, 1916.

Serial No. 36,613.

the wheel hub 16. My improvement provides a means for pressing the washer 15 continuously into good and uniform engagement with the wheel hub; and improvement may be added to the ordinary trolley whethersprings 19 are present or not. If the springs 19 are present, then lmy device presses against these springs, but if the springs 19 are not present, then my device presses directly against the extensions 18, as will hereinafter be described. Upon the opposite projecting ends of shaft13 I mount the heads 20 of the configuration illustrated.

I prefer to permanently mount one of the heads upon one end of the shaft, as by screwing it on the shaft as shown at 21; and I prefer to secure the other head upon the shaft by means of a pin 22 passing through the shaft and lying in a slot or groove 23 in the outside face of the head. The heads and shaft .may be removed by removing the pin 22 and removing the left hand head from the shaft and then by moving the shaft and the other head longitudinally.

Each of the heads 20 contains a spring 25 pressing against an interior washer 26, and the inner end of each head has a closure 27 having circumferentially arranged openings 28 therein with enlarged end portions 28a, so that hooked shaped extensions 29 on washer may be insertedv through the enlarged portions 28a and the washer then turned to the position shown in the various views, when the extensions 29 cannot be withdrawn' without being turned again. The extensions 29 project through the closures 27 and engage with the interior spring pressed `washer 26; so that' the springs 25 press the washers 30 inwardly toward each other and press them against the springs 19, or, in case springs 19 are absent, they press the washers 30 directly against the extensions 18 of the contact washers 15.

It will be noted that the construction is such that members 30 cannot be moved from proper relation tothe heads 2O without relative rotation; and-this relative rotation, as well as rotation of the heads relative to the harp orvframe 10, is-prevented by the means now described.- Upon the form of harp shown in the drawings there is usually a web which projects upwardly above the boss 36 in which shaft 13 is carried. The upper side of each head 20 has a head cannot turn unless it is withdrawn longitudinally. The member 3() fits around the boss 3G and has a notch or slot 30L cut in it which fits around the web 35; so that, when the parts are all assembled, the washer 30 is also prevented from rotating relative to the frame, and is thereby prevented from rotating relative to the head.

Vhen my improved trolley is in use, the springs 25 exert their forces to press the contact washers l5 against the hub of the wheel; and this force is uniform and presses the washers into uniform contact with the wheel. The springs 25 are not liable to be broken or deformed as they are entirely inclosed within the heads 20 which may be made sufficiently heavy to adequately protect the springs. Changes of detail, such as the shape and size of the heads, etc., may be made to apply my improvement to various forms of trolley.

Having described a preferred form of my invention, I claim:

l. A trolley, embodying a frame, a shaft carried therein, a trolley wheel on said shaft, a contact member adapted to be pressed against the wheel, a removable head mounted on the shaft, a spring in said head adapted to press the contact member against the wheel, and means for preventing rotation of the head relative to the frame.

2. A trolley, embodying a frame, a shaft carried therein and projecting outside the frame, a trolley wheel on said shaft inside the frame, a contact member between the wheel and frame adapted to be pressed against the wheel, a removable head mounted on the shaft exterior of the frame, a spring in said head pressing the Contact member against the wheel, and means for preventing rotation of the head relative to the frame.

3. A trolley, embodying a frame, a shaft carried therein Vand projecting outside the frame, a trolley wheel on said shaft inside the frame, a Contact member between the wheel and frame adapted to be pressed against .the wheel, a removable head mounted on the shaft exterior of the frame, interengaging means on the frame and head to prevent rotation of the hea-d relative to the frame, and a spring in said head pressing the Contact member against the wheel.

4L. A trolley, embodying a bifurcated frame, a shaft carried in the furcations thereof, a trolley wheel mounted on the shaft between the furcations, a pair of contact members between the furcations one on each side of the shaft outside the furcations, springs in said heads pressing said contact members against the wheel, and means for preventing rotation of the head relative to the frame.

5. A trolley, embodying a bifurcated frame, a shaft carried in the furcations j thereof, a trollev wheel mounted on the shaft between the furcations, a pair of contact members between the furcations one on each side of the wheel adapted to be pressed against the wheel, heads mounted one on each end of the shaft outside the furcations, interengaging means between the frame and heads to prevent rotation of the heads relative to the frame, and springs in said heads pressing said contact members against the wheel.

6. A trolley, embodying a frame, a shaft carried therein, a trolley wheel on said shaft, a Contact member between the wheel and frame adapted to be pressed against the wheel, a head mounted on the end of the shaft, interengaging means between the head and the frame to prevent rotation of the head, a washer intermediate the head and Contact member having projections extending within the head, there being openings in the head of such configuration that in order to remove said extensions from the head the washer and head must be relatively rotated, interengaging means between the washer and frame to prevent rotation of the washer, and a spring in the head pressing said extensions and said washer toward the contact member.

7. A trolley, embodying a frame, a shaft carried therein, a trolley wheel on the shaft, a Contact washer around the shaft between the wheel and frame with projections extending through the frame, the end of the shaft projecting beyond the frame, a spring carrying head mounted `on the end of the shaft, interengaging means between the head and frame to prevent rotation of the head, a washer between the head and frame, a closure for the head on its side toward the washer, said closure having circumferentially extending openings therein, extensions on said washer adapted to project through said openings, being of such arrangement that the washer must be rotated relatively to the head in order to be removed therefrom, and a spring in said head pressing against said extensions to press said last named washer toward the extensions on the contact washer. f

In witness that l claim the foregoing l have hereunto subscribed my name this Qsi day of June, 1915.

MARK LEV, Jr.. Witnesses:

JAMns T. BARKELEW, ELwooD BARKnLnw.

Copies of this patent may be'o'btaned for ve cents each, by addressing. the Commissioner of Patents, Washington, D. C.

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