US705882A - Trolley. - Google Patents

Description

(No Model.)

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: iwlmnl lmm m UNITED STATES PATENT OFFICE.

THOMAS W. SUTTON, OF-PITTSBURG, PENNSYLVANIA.

TROILLEY.

SPECIFICATION forming part of Letters Patent No. 705,882, dated July 29, 1902.

Application filed May 7,1902. Serial No. 106,287. (No model.)

T 0 all whom, it may concern:

Be it known that I, THOMAS W. SUTTON, a citizen of the United'States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in'Trolleys, of which the following is a specification, reference being had therein to the accom pan y-- such obstruction without becoming disengaged.

Another object of my invention is to provide a device that permits the trolley-wheel to be easily disengaged from the wire and may be readily placed in position upon the wire when desired.

My present invention further contemplates to provide a device of the above-described character that will be extremely simple in construction, strong, durable, comparatively inexpensive to manufacture, and highly eflicient in its use.

With the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts, to be hereinafter more fully described, and specifically pointed out in the claims. I

In describing the invention indetail reference is had to the accompanying drawings,

forming a part of this specification, and,

wherein like numerals of reference indicate like parts throughout the several views, in which- Figure 1 is a side elevation of myimproved trolley. Fig. 2 is a front elevation of the attachment with the trolley harp and'wheel removed therefrom. Fig.3 is a side elevation of the axle for the trolley-wheel and on which my attachment is suspended. Fig. 4 is a side elevation, partly in section, of the weight which may be attached to the device for increasing the weight thereof if desired.

' In the accompanying drawings, 2 indicates the trolley-wheel, 3 the harp in which the wheel is mounted, and 4 the trolley pole which carries the harp, these parts being of the ordinary construction and the wheel adapted to engage the trolley-wire l in the usual manner.

While I employ the usual form of trolley wheel and harp, I employ an axle 2 of especial construction. This axle is made of greater length than that ordinarily used, so that its ends will be extended on each side of the harp 3, and it is provided near each end with apertures 3 and 4. The axle is fastened to the harp by means of linchpins or keys 5', passed through the ends of the harp and through the'apertures 3 in the axle.

My attachment is then sprung upon the extended ends of the axle 2' and held upon the same by pins 6', which are inserted through the apertures 4c in the axle. I Thus it will be seen that my attachment is at all times at liberty to swing by reason of its pivotal con nection to the harp 3.

My attachment embodies a yoke 5, consisting of two cheek-plates, which at their lower ends are drawn together and secured to the spacing-block 7, to which they are securely fastened in any approved manner. On the outer face of these cheek-plates comprising the'yoke are secured keepers 6 and 7, which receive the retaining rods or arms 8, these rods or'arms 8 being rotatable in the keepers and prevented from vertical movement by pins 9, which engage the upper edge of the keeper 7 and the lower edge of the keeper 6. These rods 8 are curved or extended outwardly at their lower ends, as at 10, and have openings 11 to receive the strands 12 of the operating-cord, these strands of the cord being passed through the keeper 12, which is fastened to the lower end of the spacing-block 7 by means of the nut 14, threaded'onto the shank 15, carried on the lower end of said spacing-block 7 I make this threaded shank 13 of sufficient length that, if desired, I may attach thereto a weight 16, as shown in Fig. 4., in order to give a greater heft to the device. This weight 16 is provided with a threaded socket 17 to engage with the threaded shank 15, so that it may be readily attached, if desired, or removed in case it may not be necessary to use the same. The upper end 16 of the rods or arms 8 forma retaining device, which curves inwardly over the cheek-plates, as at 18, extended upwardly and then bent over at right angles, as shown at 19, so that their ends are adjacent one another, but not in contact. The arms or rods constituting the retaining device are held normallyin the retaining position by means of springs 14, arranged on the rods between the keepers 6 and 7 and having their ends 15 extended in oppo site directions and bear against the cheekplates forming the yoke 5. In order that the rods or arms 8 will not engage with the cheekplates throughout the length of the latter, I place small plates or spacing-blocks 8 underneath the keepers 7 6, so that the only frictional'contaet of these rods is with the keepers or with the plates or spacing-blocks.

In operation the springs 14 will serve to normally hold the retaining device shown in Figs. 1 and 2. When the operating-cord is pulled downwardly, the ends 10 of the rods or arms 8 may be drawn together by reason of the strands 12 of the operating cord passing through the eye or keeper 12, and the rods will thereby be turned so as to spread or separate the upper end thereof and permit the disengagement of the wheel from the wire. The pins 9, carried by the rods 8, will limit the rotary movement imparted to these rods, and as soon as the operating-cord is raised the spring let will immediately return the arms or rods to the retaining position. WVhen the trolley-wheel is in engagement with the wire, the upper ends of these rods or arms lie above said wire, and thus serve to normally hold the wheel in engagement with the wire, preventing said wheel from leaving this position on the wire until such time as the operating-cord is actuated, so as to open the upper ends of the arms. Should an obstruction be met on the trolley-wire,the rods 8 will turn in keepers 6 and 7, and after the same is passed the springs 14 will return the rods to their normal position.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of my invention. 7

Having fully described my invention,what I claim as new,and desire to secure by Letters Patent, is-- 1. In a trolley, the combination with aharp, an axle mounted in said harp and extended beyond the sides of the latter, a pin passing through the ends of the harp and through said axle and a trolley-wheel mounted on the axle within the harp, of a yoke comprising a pair of cheek-plates mounted at their upper ends on the extended ends of the axle and secured together at their lower ends, retaining-rods journaled in keepers secured to said plates and rotatable in said keepers, the upper ends of said arms being extended inwardly, a keeper carriedat the lower end of the yoke, means connected to the lower ends of the rods or arms and passing through said keeper for rotating the rods, and springs arranged on said rods for normally holding the same in the retaining position,substantially as described.

2. In a trolley, the combination with a trolley-harp, an axle mounted therein and ex tended beyond the sides of the harp and a trolley-wheel mounted on said axle, a pin passing through said harp and said axle, of a yoke embodying a'pair of cheek-plates connected to a spacer-block at their lower ends,

retaining-rods journaled in keepers on the outer face of said plates and rotatable in said keepers, springs arranged on said rods and bearing against the cheek-plates for normally holding the rods in a retaining position, a keeper carried by the spacer-block, an operating-cord extending through said keeper and connected to each of the retaining-rods, and means carried bythe spacer-block for securing a weight thereto, substantially as described. A

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

THOMAS W. SUTTON.

Witnesses:

J OHN NOLAND, E. E. POTTER.

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