US748422A - Trolley. - Google Patents

Trolley. Download PDF

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Publication number
US748422A
US748422A US15609503A US1903156095A US748422A US 748422 A US748422 A US 748422A US 15609503 A US15609503 A US 15609503A US 1903156095 A US1903156095 A US 1903156095A US 748422 A US748422 A US 748422A
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Prior art keywords
trolley
guards
wheel
arms
harp
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US15609503A
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Walter J Rowley
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/04—Current collectors for power supply lines of electrically-propelled vehicles using rollers or sliding shoes in contact with trolley wire
    • B60L5/10—Devices preventing the collector from jumping off

Definitions

  • This invention relates to certain new and useful improvements in trolleys, and has for its main object to provide novel and effective means for preventing the trolley-wheel from becoming accidentally disengaged from the trolley-wire.
  • the invention comprises aharp, which is provided with two verticallydisposed arms extending above the trolleywheel that is journaled in the harp, and in the upper end of each of these vertical arms is pivoted a dog, which dogs act as guards to retain the wheel in engagement with the wire, the guards being held in normal position by means of springs carried by the arms and engaging the dogs.
  • 1 indicates the prongs of the harp, which latter is suitably attached to the trolley-pole 2. Between the prongs of the harp on the axle or shaft 3 V is mounted the ordinary trolley-wheel 4.
  • Each prong carries an upwardly-extending vertically disposed arm 5, in which, near its upper end, is a transverse slot 6, and pivotally mounted in these slots of the verticallydisposed arms-are guards 7, which are en-- gaged by and are under the tension of springs 8, attached to the rear face of the verticallydisposed arms 5.
  • the spring-pressed guards 7 extend beyond tically-disposed arms 5 in alinement with the.
  • I may also employ eyes 12 near the lower end of the harp through which the cords 9 are passed in order that the pull against the eyes 11 may not be so direct as if the cords hung down vertically.
  • the side walls of the slots 6 may be made curved, as seen by dotted lines in Fig. 3, whereby to give sufficient movement to the guards when they are actuated.

Description

PATENTED DEC. 29, 1903.
W. J. ROWLEY.
TROLLEY.
APPLICATION FILED MAY 7, 1903.
N0 MODEL.
oams wmgns co. novziumq. WASH UNITED STATES Patented December 29, 1903.
PATENT OFFICE.
TROLLEY.
SPECIFICATION forming part of Letters Patent No. 748,422, dated December 29, 1903.
' Application filed May 7, 1903. $erial No. 156,095. (No model.)
To aZZ whom it may concern:
Be it known that I, WALTER J. RowLEY, a citizen of the United States of America, re-
siding at Allegheny, 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 tothe accompanying drawings.
This invention relates to certain new and useful improvements in trolleys, and has for its main object to provide novel and effective means for preventing the trolley-wheel from becoming accidentally disengaged from the trolley-wire.
Briefly described, the invention comprises aharp, which is provided with two verticallydisposed arms extending above the trolleywheel that is journaled in the harp, and in the upper end of each of these vertical arms is pivoted a dog, which dogs act as guards to retain the wheel in engagement with the wire, the guards being held in normal position by means of springs carried by the arms and engaging the dogs.
In describing the invention in detail reference will be had to the accompanying drawings, forming a part of this application and wherein like numerals of reference will'be employed for designating like parts throughout the different views of the drawings, in which- Figure l is a side elevation of a trolley constructed in accordance with my invention, the trolley-pole broken away. Fig. 2 is a rear elevation of the same; and Fig. 3 isa top plan view, the harp and trolley-wheel being partly broken away.
In the accompanying drawings, 1 indicates the prongs of the harp, which latter is suitably attached to the trolley-pole 2. Between the prongs of the harp on the axle or shaft 3 V is mounted the ordinary trolley-wheel 4.
Each prong carries an upwardly-extending vertically disposed arm 5, in which, near its upper end, is a transverse slot 6, and pivotally mounted in these slots of the verticallydisposed arms-are guards 7, which are en-- gaged by and are under the tension of springs 8, attached to the rear face of the verticallydisposed arms 5.
The spring-pressed guards 7 extend beyond tically-disposed arms 5 in alinement with the.
guards 7, whereby when a downward pull is made on the cord or rope 10 the guards 7 will be spread in order to permit the placing of the troiley-wheel into engagement with the wire or the removal of the said wheel from the wire. I may also employ eyes 12 near the lower end of the harp through which the cords 9 are passed in order that the pull against the eyes 11 may not be so direct as if the cords hung down vertically.
When the guards come into engagement with a switch or hanger, the same will readily spread apart, so as to permit the passage of the trolley, and as soon as said switch or hanger has been passed the springs will return the guards to their normal position, whereby to prevent accidental disengagement of the trolley-wheel from the wire. The side walls of the slots 6 may be made curved, as seen by dotted lines in Fig. 3, whereby to give sufficient movement to the guards when they are actuated.
While I have herein shown and described the invention in detail as it is practiced by me, yetit will be evident that various changes may be made in the details of construction 'Without departing from the general spirit of my invention.
Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is-- In a trolley, the combination with the harp each prong of which carries a vertically-disposed arm provided near its upper end with a transverse slot, of guards pivoted in said slots, springs connected to the vertical arms and engaging said guards, and cords connected to said guards for actuating the same, as and for the purpose described.
In testimony whereof I affix my signature in the presence of two witnesses.
- WALTER J. ROWLEY. WVitnesses:
H. O. EVERT,
E. E. POTTER.
US15609503A 1903-05-07 1903-05-07 Trolley. Expired - Lifetime US748422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15609503A US748422A (en) 1903-05-07 1903-05-07 Trolley.

Applications Claiming Priority (1)

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US15609503A US748422A (en) 1903-05-07 1903-05-07 Trolley.

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