US821719A - Trolley. - Google Patents

Description

PATENTED MAY 29, 1906.

M. HQKASHIAN.

TROLLEY.

APPLICATION FILED SEPT. 26, 1904.

* I 17 V5771? 0 r; M' a 5 271 654 5/7/57 l V up? Q MZ 031W.

' UNITED STATES PATENT oFFroE.

Specification of Letters Patent.

Patented May 2e, 1906.

j u nm September 26,1904. Serial No. 225,751.

. To all whom it may concern.-

Be it known that I, MINAS H. KAsHrAN, a citizen of the United States, residing in Amesbury, in the county of Norfolk and State of Massachusetts, have invented an Improve-' ment in Trolleys, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention is a trolley for use on electric street-cars.

As is well known, the wear of the ordinary trolley-wheel as it travels rapidly in contact with the trolley-wire is exceedingly destructive, so that the wheels have to be renewed very frequently.

Many devices have been proposed for chca ening the manufacture and increasing the ife of the usual trolle -wheel, and my resent invention is a furt er improvement in this direction. 7

Stated in general terms, my invention re sides in forming the axle integrally. with the main part of the trolley-wheel and providing in connection therewith cooperating lubricating journal-boxes and a removable wearing-surface for engaging the trolley-wire, all of said parts being independently replaceable and bein mounted in a trolley-harp provided wit means for enabling said parts to be quickly placed in position or removed therefrom. This construction affords great durability and long life to the main portion or frame part of the trolley-wheel, as 1t is not only strong in construction, but by having the axle integral therewith and mounted in special bearings, as will presently be described, there is a minimum wear and strain upon this portion of the wheel, and the peripheral or grooved art of the trolley. is

quieklyremovable an renewable, being pref} erably held between two retaining portions of the wheel-frame.

Further advantages of my invention will be pointed out in the course of the following description of the. constructional details thereof, and the invention will be more particularly defined in the appended claims, reference being had to the accompanying drawings, in which I have iilustrated a preferred embodiment of my invention.

In the drawings, Figure 1 is a side elevation of one form of my invention. Fig. 2 is a central horizontal sectional view thereof. Fig. 3 shows in side elevation one of the se arable portions of the trolley, the axle, an in section on the line 3 3, Fig. 2, one of the bearings. Figs. 4 and 5 are views in side elevation, partly broken away, showin portions of the trolley. Fig. 6 is a seetiona view of a modified construction.

My invention relatesto the u per portion of the trolley mechanism usuaily found in overhead electric-railway systems, and accordingly I will confine the description and drawings to that portion of the mechanism.

Referring to Fig. 1, it will be seen that my improved trolley a is mounted in a trolleyharp (1, whose upper portion a is hinged at a to the lower portion, said'parts being retained to ether by a sliding sleeve a, normally hel forward b a spring a? and preferably having a slight t eaded en agement at a with the harp, so as to lock t e art a in closed position. In the o posite si es of the harp a I mount tubular s ouldered bearings 6, each bearing having a central cylindrical opening I), closed at its outer end and forming a bearing-surface for the shaft or axle c of the trolley pro er. This axle 0 projects rigidly from a hu 0 of the wheel or trolley and constitutes an importantfeature of my invention As shown in Figs. 2 to 5, the preierred form of trolley comprises two separable portions 0 c havin inclined or conical surfaces 0 arranged to 0 amp between them a ring or annular wear-plate c, grooved at c to engage the trolley-wire in usual manner. The part c is provided centrally with a heavy hub 0', already mentioned, and projectin radially from the latter are spokes c, shoul ered at their outer ends and recessed, as indicated at c", to receive pins c projecting inwardly from the annular wear-plate c.

The part c is similar in shape to the outer portion of the part 0 but instead of having a hub it has an opening 0 provided with lateral offsets 0 to receive rejections 0, extending from the axle e, 4W ereby the part 0 may be quickly locked in clamping osition by a partial rotation thereof with re ation to the projections 0 the parts being held against unauthorized relative movement by a pin or other suitable means 0 The cooperating conical surfaces ofthe parts c, 0 and c afford a large frictional surface and also facilitate rigid clamping of the parts together, while the bayonet-joint form of lock ermits very quick assembling ofthe arts. nstead of this form of joint threa s or any other suitable means maybe employed. By havingthe axle integral with the wheel and the wearing-surface c quickly replaceable the main portion or part of the wheel is not liable to get out of order, but may be retained in operative condition for a long period of time and the quickl destroyed en aging portion a may be readily renewed as o ten as it wears out. The projecting bearin portions of the axle c are mounted, as state in the recesses I), provided therefor in the j ournal-boxes, and

I0 surrounding said recesses is an annular oilchamber 12 having an 0 ening b through which said chamber may e completely filled with oil and then closed witha screw 1), which normally engages a recess formed therefor in 15 the adjacent portion of the harp a, whereby the journal-box is held in place andis also held against any tendency to rotate, said box when in said position having a small opening 6 extending up into the bearing-recess b for permitting constant lubrication of the axle c on its under side. By having this opening 6 on the under side it permits not only constant lubrication of the axle, but permits any grit which may possibly get into said bearing 2 5 to work out. The annular chamber 6 is closed by an annular cap I)", driven into its outer end, as clearly shown in Fig. 3. Instead of having the wear-plate 0 formed in. a continuous annulus, as shown in Fig; 4, it" may be ,s lit transversely into two arts d d, in whic case the wheel proper is ormed of one piece, as shown at d Fi 6, said two arts abutting against each 0t er at d and eing provided with rojections d", enterin re 3 5 cesses therefor n the wheel-frame an retained by pins (1 The wearing portion which slides and rolls on the trolle -wire is preferably formed of brass, I ma e no claim to the provision of 0 renewable wearing portions nor to clam ing the same between separable parts of a tro leywheel, my invention residing in the combination of the parts herein shown and described, whereby increased durability and strength 4 5 are secured, said combination consisting of a wheel-having a heavy main portion arranged to receive a detachable wear-plate and provided with an inte ral axle combined with lubricating f'ournaloxes removably carried in the trol ey-har This construction in practice accomplis es the desired results by providing eat strength and free runnin of parts at t ose portions of the mechanlsm which it is necessary to preserve intact as long as possible and yet it ermits the quick renewal of those parts whic necessarily wear out ulckly because of their constant frictiona engagement with the trolley-wire.

In use if any part gives out the harp is 6o quickly opened simply by giving the sleeve a a turnand then sprlnging it back so as to release the jaw a, (and, if desired, the threads a may be omitted, using simply the spring, or vice versa,) and ,then the defective art is arena c is again engaged by the lugs or projectlons 0, thereby clamping the wear-plate rigidly in place.

I have aimed to rovide a self-retaining mechanism, and it will be seen that the trolley-wheel, its axle, and its bearings are all held together automatically when laced in the harp. The bearings fit like thimbles or ca s over the ends of the axle, thereby retaming the trolley-wheel in lateral adjustment as well as in pivotal position, said bearings being held by their shoulders against lateral movement and being held by the screws l) in proper fixed upright position, all the parts being locked in operative relation by the closing of the trolley-harp when secured by its ferrule or sleeve a Having described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. A trolley for electric-railways, comprising a wheel-frame having a hub provided with an axle projecting at its opposlte ends, a sup orting-harp, removable lubricating journa -boxes carrled b said harp su porting the opposite ends 0 saidaxle, an a removable annular wear-plate carried by said wheel-frame, the latter comprising two separable parts provided with means cooperatlng with said axle for clamping said wear-plate between them..

2. A trolley for electric railways, com rising a wheel-frame provided with a hub, aving a fixed axle projecting rigidly therefrom at itsopposite ends, and an annular wearlate peripherally grooved to engage the troly-w1re, said frame com risin two separable parts, one of which is atera l. removable from the other endwise of said ax e, clampin parts and wearlate having their cooperating surfaces conica in shape and inclined to- 6 5- quickly renewed-and the jaw clampe again i ward each other for affording strong gripping o engagement with each other when clamped together.

4. A trolley for electric railways, comprising a wheel-frame having a hub, provided with an axle projecting at its opposite ends, a supporting-harp composed of horizontallyseparable sections, removable lubricating journal-boxes carried by said harp supporting the opposite ends of said axle, said boxes each havingacentral recess close'd at its outer end for surrounding said axle, and a closed annular oil-chamber about said recess provided with a small opening into said recess, and said harp having recesses for removabl retaining said boxes When the harp is closedl 5. A trolley for electric railways, comprising a wheel-frame having a hub provided with an axle projecting at its opposite ends,

a supporting-harp composed of horizontally separable sections, removable lubricating j ournal-boxes carried by said har supporting the opposite ends of said ax e, each of said boxes having a central recess closed at its outer endfor receiving the end of said axle, and aclosed oil-chamber surrounding said recess and provided with a small opening into said recess on the under side thereof when the box is in working position, and said harp having recesses for removabl retaining said boxes when the har is closed? 6. A trolley for e ectric railways, com rising a wheel-frame having an axle, a tro leyharp composed of horizontally-separable sections, a removable annular 'ournal-box fitted to a corres ondingly-shape seat in the adjacent faces 0? the sections of said harp, a central recess in said box for the endof the said axle, a closed oil-chamber surrounding said recess, a filling-opening in the outer peripheral wall of said box, a closing device for said opening normally projectin therefrom between the sections of said harp or reventing rotation of said box, and a smal oil-hole from said chamber into the bottom of said recess. I

7 A trolley for electric railways, compris ing a trolley-wheelhaving an axle, opposite j ournal-boxes containing annular lubricatin chambers fitting over the 'ends of said ax e and removable endwise therefrom, a trolleyharp composed of two parts separable horizontally and having cooperating recesses for removably receiving said boxes, said boxes and harp having means for automatically retainin said wheel, boxes, and harp in proper operative position simply by the placing of said whee and boxes in said recesses and closin the har 8. g trolley or electric railways, comprising a trolley-wheel, having an axle pro'ecting at its opposite ends, cap-like journal -boxes containing annular lubricating-chambers fitting over the ends of said axle and removable therewith,a trolley-harp composed of two parts horiz'ontally pivoted together at their outer ends, and containing recesses for clamping between them said j ournal-boxes, the latter containing means for automatically holding them in proper operative position when the trolley-harp is closed, said harp at the inner end of its said parts having a sleeve held in yielding engagement With said parts for locking the har closed.

In testimony w ereof I have signed my I name to this specification in the presence of two subscribing witnesses. j

- MINAS H. KASHIAN. Witnesses:

GEO. H. MAXWELL, F. AUSTIN TARR.

Images