US1257556A

US1257556A - Trolley.

Info

Publication number: US1257556A
Application number: US16552617A
Authority: US
Inventors: John Wanat
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-04-30
Filing date: 1917-04-30
Publication date: 1918-02-26
Anticipated expiration: 1935-02-26

Description

J. WANAT.

TROLLEY.

APPLICATION FILED mm. 30. :9".

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TROLLEY.

To all whom it may concern: 1-

Be it known that 1, JOHN WANAT, a subject of the Czar of Russia, residing at Pittsburgh, in the county of Allegheny-and State of Pennsylvania, have invented certainnew and useful Improvements in Trolleys, of which the following is a'specification. V

This invention relates to electric propulsion and has special reference to a trolley for street cars and the like.

One important object of the invention is to improve and simplify the general 0011- struction of devices of this character.

A second important object of'the invention is to provide an improved form of trolley which is so arranged as to follow the curvature of a trolley wire or third rail without danger of jumping off of such wire 'or third rail as frequently happens with the acters of reference indicate like parts in the several views, and I Figure 1 is a plan view of a trolley constructed in accordance with this invention and showing a portion of the trolley pole and harp.

Fig. 2 is a side elevation thereof.

Fig. 8 is a section on the line 33 of Fig. 1.

Fig. 4 is a section on the Fig. 1.

Fig. 5 is a view similar to Fig. 1 and showing the positions assumed by the trolley wheels in passing around the wire on the curve. I v

Fig. 6 is a section on the line 6-6 of Fig. 5.

Fig. 7 is a section on the line 77 of line of Fig. 5.

Fig. 8 is a section on the line 8-8 of Fig. 7.

Specification of Letters Patent.v Patgntaed Fab, '26, 1918,

Application fi1ed'Apri130, 1917. Serial No. 165,526.

In carrying out the objects of this inven tion there is provided a frame bar 10 having a fork 11 at each end. Between the arms of each of these forks extends a shaft eters of the portions 13 so that when in-position a ournal of unlform diameter 1s formed by the portion .13 and sleeves 15 of each shaft. These sleeves moreover have at their ends flanges 16 and wound around each sleeve and hearing at onecnd against the flange of that sleeve and at theother end against the trollev wheel is a coil spring 17. a

It Will now be noted that these coil springs normally hold the wheels 14: centrally of the forks and that when in this position the wheels, in their rotation. frictionally rotate the springs 17 while at the same time the sleeves 15 are frictionally rotated by these springs. By reason of this construction wear of the wheel 14; or springs 17 is eliminated. Moreover upon movement of a wheel 1d to one side or the other shown in Fig. 5 the wheel itself passes on the rotating sleeve so that at no time do the springs rub against either wheel or sleeve in their rotation. Furthermore, upon inspection of Fig. 5 it will be seen that movement of a wheel 14 to one side or the other compresses one of the springs 17 thus permitting the wheel to take such position as to. remain on the wire while at the same time the benefits of a double wheel trolley are assured.

In Fig. 5 the wire is indicated at 18 and the stay or brace wire as used on curves, indicated at 19. It will be obvious, however, that a third rail or any other form of rail or wire may be used inconnection therewith. In order to support the frame bar 10 there is provided on the top of the trolley pole 20 a harp in the form of a fork 21 and extending between the arms of this harp is a built up shaft which consists of a section 22 extending from one arm to the other and arouately channel or trough-shaped. Fitted in the section 22 adjacent each end is a section 23 which is divided longitudinally into two to the interior of the section 22 while the other has a radius equal to the exterior of said section 22 whereby when the parts are assembled the shaft is in the form of a complete cylinder. The ends of this built up shaft are fixed in the arms of the harp 21 betweensaidscrews'2t while the portions 23 are-spaced apart at their innerends so that the trough sections 22 may'pass through an arcuate 'slot'25 in the frame bar 10. It will be observed from an inspection of Fig. 3 that the slot 25 has a greater arcuate length than the section'22and'by reason of this a slight or limited tilting movement of the frame bar 10 ispermitted about the axis of the shaft which is built up of the sections '22, and 23. By reason of this construction the angle-between the frame bar 10 and the harp 21 is always substantiallythe same so that as the trolley poleis raised up the frame bar 10: will be nearly horizontal thus enabling both wheels 14 to effect contact at substantially the same, time with the wire 18. :It will be obvious that thetrolley is used as anordinary trolley and thatlby reason of the yielding'of the wheels contact is always maintained between the wire 18 and the wheels with practically no danger of the trolley jumping since to effect such jumping both wheels would have to becomedisplaced. There has thus been provided a simple and efiicie-nt device of the kind described and for the purpose' specified.

It is obvious that many minor changes may-be made in the formand construction of theinvention without departing from the material'principles thereof. It is not therefore desiredto confine the invention to the exact form herein shown and described but it i's wished to include all such as properly come within the scope claimed.

' Gopies-ofithis patent may be obtained for- Having thus described the invention what is claimed as new, is

1. In a trolley for cars and the like, a frame bar having a fork at each end, shafts each extending between the arms of a respective fork and having an enlarged central portion, wheels each mounted to revolve normally on the enlarged portion of arespective shaft, independent sleeves revolubly mounted on the ends of said shafts and having an exterior diameter equal to the diameter of the central shaft portions, collars on the outer ends of the sleeves, springs coiled around the sleeves and bearing against the collars and wheels to hold the wheels yieldably in central position on the forks, and means to connect the frame bar tiltably to a trolley pole.

2. In a trolley for cars and the like, a frame bar having a fork at each end, trolley wheels each journaled between the arms of a respective fork, means to hold the wheels yieldably in the centers of said forks,a trolley pole having a harp at its upper end, a shaft extending from arm to arm of said fork and fixed thereon and consisting of a section extending between said arms and arcuately trough shape in cross section and a pair of spaced sections each having a portion filling one end of the first section and a second portion concentric with the first section whereby to form completely cylindrical ends, said bar having an arcuate opening therein receiving the center of the arcuate section, said opening being of greater arouate length than the section whereby to rock slightly thereon.

In testimony whereof I afiix my signature.

JOHN W'ANAT. Witnesses:

F. TOMKALINI, W. BEREZENZKI.

five cents each, lay-addressing the Commissioner of Patents. Washington, I). G.