US717583A - Trolley-pole and stand therefor. - Google Patents

Description

No. 717,583. "PATENVIBD JAN. s, 1903.

W. H. KILBOURN.-

TROLLEY POLE AND STAND THEREiEOR.

APPLICATION mum MAR. 13, 1902. I no n'onBL. 2 SHEETSSHEBT 1.

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W.H.KILBOURN.

TROLLE-Y POLE AND STAND THEREFOR.

APPLIOATION FILED MAR. 13, 1902.

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WIN? n ziliililmz v v Aliomey WASHINGTON H. KILBOURN, OF GREENFIELD, MASSACHUSETTS, ASSIGNOR TO THE STANLEY ELECTRIC MANUFACTURING COMPANY, OF PITTS- FIELD, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

TROLLEY-POLE AND SPECIFICATION forming part of Letters Patent No. 717,583, dated January 6, 1903.

Application filed March 13, 1902.

To aZZ whom it may concern:

Be it known that I, WASHINGTON H. KIL- BOURN, a resident of Greenfield, in the county of Franklin and State of Massachusetts, have invented certain new and useful Improvements in Trolley-Poles and Stands Therefor; 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 lo the art to which it appertains to make and use the same. 4

My invention relates to an improvement in trolley-poles andstands therefor, the object of the invention being to provide an improved stand which will project but a short distance above a car-top and so construct and mount the trolley-pole that it will catch and not be thrown violently against cross-wires in the event of the harps escape from the trolleywire.

A further object is to provide an improved trolley-pole which will be extremely light and elastic, yet strong and durable to withstand the necessary strains thereon.

With these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view illustrating my improvements. Fig. 2 is a front view. Fig. 3 is an end view. Fig. 4 is an enlarged view of the trolley pole, and Fig. 5 is a view in section illustrating the spring-tension mechanism. Fig. 6 is a view of a modification.

1 represents the top of a car, on which a plate 1 carrying the vertical pin 2, is secured and on which my improved stand is mounted to turn, and said stand comprises a hollow standard 3, having a thrust-bearing on pin 2 and secured against removal by a thumbscrew 4, projected into an annular groove in the pin, and an oil-cup 5 is preferably pro- 5 vided at the top of standard 3 to lubricate the bearing. Parallel circular plates 6 are made integral with standard 3, and with one of said plates a horizontal cylinder? is made integral. This cylinder 7 is open at both ends and has mounted therein a journal 8, project- Serial No. 98,102. (No mcdell) ing through one plate 6 and having a crosshead 9 secured thereto or made integral, as preferred, and disposed between plates 6, and the other end of the journal 8 extends beyond the end of the cylinder, being closed bya cap 5 5 10, through Which'the journal projects.

The trolley-pole consists of a spring-rod bent between its ends, as shown at 12, forming two approximately parallel rods 11 and 13, which project through openings in the crosshead 9 and the lower rod 13, secured in the cross-head by a bolt, as shown. A brace-rod 14 is also secured in said cross-head 9 and extends some distance between and approximately parallel with rods 11 and 13 and is bent at its outer end into a hook 15 to be bent around the lower rod 13 and make the latter comparatively rigid. The upper rod 11 projects through cross-head 9 and has screwed thereon a nut 16, the latter being sufficiently spaced from the cross-head to permit of movement of rod 11, on which and near cross-head 9 a bar 17 is located, and is provided at each end with a 'dog 18, adapted to engage a series of teeth on the plates 6 to catch the trolleypole in the event of its escape from the trolley-wire, as will be more fully hereinafter explained.

In cylinder 7 around journal 8 and secured to the journal at one end is a coiled spring 19 to give to the trolley-pole the proper springpressure and hold it in contact with the trolley-Wire, the other end of this spring 19 being secured to cap 10. The cap has a springpressed lever a, pivoted betweenits ends and carrying at its free end a pin 1), projecting through a hole in the cap and adapted to spring into any-of a series of holes in the cyl- I inder to lock the spring at any tension, and to facilitate the turning of the cap I provide a lug 0 near its edge, and the operator inserts a bar between this lug and end of journal and can force the springs tight as desired' On plate 1 at one or both edges I preferably provide a raised track d, against the 5 lower face of which a roller 6, carried by an armfon standard 3, runs. This track may. be constructed in any desired manner, and it serves to relieve the pin 3 of the great strains thereon, but will not interfere in the slightest with the swinging of the trolleypole.

, On the outer end 12 of the pole a harp 20 is secured for engagement with the trolleywire, and a rope or chain 21 is secured to this outer end of the pole to permit the movement of the pole at will.

The operation of my improvementsis as follows: When the harp 20 is in engagement with the trolley-wire, the tension of spring 19, pressing the harp thereagainst, will be sufficient to draw the rod 11 outward and hold the dogs 18 out of engagement with the teeth on plates 6; but when resistance is removed from the poleas, for instance, when the harp jumps from the wire and the pole is thrown forward by its spring 19-the elasticity of rod 11 will be sufficient to immediately move the dogs into engagement with the teeth and hold the pole out of danger of striking cross-wires and the like, and when the conductor or other operator draws the pole by means of rope or chain 21 the dogs will be moved out of engagement with the teeth and held out of such engagement until all downward resistance on the outer end of the pole is again removed.

Instead of constructing the pole as above explained I might employ a pole similar to those now in use, in which event a modified construction, such as shown in Fig. 6, would be used. In this form of my invention the cross-head 22 is made approximately L shape and thejournal secured thereto near the angle. To the short member of crosshead an arm 23 is pi votally connected and is normally disposed parallel with the main portion of said head, and a bolt 24 is passed through the free ends of cross-head 22 and arm 23 and is headed at one end and has a nut screwed on the other end to prevent the escape of the bolt. A coiled spring 25 is mounted on bolt 24 between the head thereof and cross-head 22 and is of sufficient strength to overcome the weight of the trolley-pole to compel dogs 26, carried by arm 23, to engage teeth on the plates 6 when pressure is relieved from the free end of the trolley-pole. When the pole is in engagement with the trolley-wire, the tension of the main spring will hold the dogs out of engagement with the teeth, and when the pole is being moved by the operator the pressure will hold the dogs out of engagement; but when the pole is relieved of all pressure, or, rather, resistance, spring 25 is strong enough to force the dogs into engagement with the teeth and catch the pole before any damage is done by its being thrown forward by the main spring.

A great many other slight changes and alterations might be resorted to in the general form and arrangement of the several parts described Without departing from the spirit and scope of my invention, and hence I would have it understood that I do not limit myself to the'precise construction set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention,.what I claim as new, and desire to secure by Letters Patent, is

1. The combination with astand, a trolleypole pivotally attached thereto, and a spring for throwing the pole forward, of a dog made rigid with the pole and adapted to engage the stand and lock the pole against forward movement when resistance to such forward movement has been removed, said dog being normally retained out of engagement with the stand by pressure applied to the pole.

2. The combination with a stand having teeth and a trolley-pole pivotally attached to said stand, of a dog carried by and made rigid with the pole for engaging the teeth on the stand and means for applying spring tension to the pole when resistance is applied to the free end thereof, said spring tension acting to retain the dog on the pole out of engagement with the teeth on the stand.

3. The combination with a stand having ratchet-teeth, of a flexible pole pivotally attached to the stand, and carrying a contact device at its free end, and a dog rigid with the pole for cooperating with the ratchetteeth, said dog being held out of engagement with the ratchet-teeth by the bending of the pole when in use, and a spring for applying pressure to the pole to press the contact device against a trolley-Wire.

4. The combination with a stand, of a pole pivotally connected with the stand and having a flexible member movable longitudinally in its connection with the stand, a contact device at the free end of the pole, a spring connected with the stand and pole for pressing the contact device on the latter against a trolley-wire, and a dog secured to the flexible longitudinally-movable member of the pole and adapted to engage the stand when the contact device leaves the trolley-wire and the flexible member of the pole straightens and its lower end moves longitudinally.

5. The combination with a pin and a hollow standard having a thrust-bearing thereon, of a cylinder carried by the standard a journal in said cylinder, a spring to turn said journal in one direction, a cross-head on the journal, a pole carried by the cross-head, a spring-pressed dog on the pole, a series of teeth on the cylinder end to be engaged by said dog when the end of the pole is relieved of resistance.

6. The combination with a spring-pressed journal, of a cross-head thereon, a pole comprising a spring-rod bent between its ends and one end secured in the cross-head and the other mounted to move in a hole therein, a toothed rack and a dog carried by the rod near its loosely-mounted end to normally engage the teeth of the rack but released from such engagement when resistance is applied to the free end of the pole.

7. The combination with a spring-pressed IIO journal, of a cross-head thereon, a pole com,

prising a spring-rod bent between its ends and one end secured in the cross-head and the other end mounted to move in a hole in the cross-head above the point of attachment of the other end, a nut on the upper rod to prevent its withdrawal from the head, a dog on this upper rod to engage a rigid toothed rack when resistance is not applied to the outer end of the pole, and a brace-rod secured in the cross-head and hooked around the lower rod.

8. The combination with a vertical pin and a hollow standard having a thrust-bearing thereon and a thumb-screw in the standard and projecting into an annular groove in the pin, of parallel circular plates integral with the standard, a horizontal cylinder integral with one of said plates, a journal in said cylinder, a cross-head on the journal located between the plates, a pole comprising a rod bent between its ends into an upper and lower rod, the latter rigidly secured to the cross-head and the former mounted to slide in a hole therein, a nut screwed onto the upper rod to prevent its withdrawal from the cross-head, and dogs carried by the upper rod forced into engagement with teeth on the plates by the spring of the pole when resistance is not applied to the latter.

9. The combination with a vertical pin, of a hollow standard having a thrust-bearing on said pin, a horizontal cylinder projecting laterally from said standard, a cap on one end of said cylinder, a journal in said cylinder, a spring encircling said journal in the cylinder, said spring secured at one end to the journal and at the other end to the cap, means for adjustahly securing said cap to the cylinder, a cross-head fixed to one end of the journal and a pole secured to the cross-head.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. WASHINGTON H. KILBOURN.

W'itnesses:

T. A. LUCAS, LYMAN W. GRIsWoLD

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