US1077184A - Car-truck. - Google Patents

Description

W. S. ADAMS. GAR TRUGK.

APPLICATION FILED JULY 17, 1912. 1 ,07'7,1 8%. Patented 001;. 28, 1913.

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Wbtwemeo W. S. ADAMS.

Patented Oct. 28, 1913.

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3 @N w 1 a kw QE 3 Q i N, 3 QQN NE W t W? N 9 N LB .1 QN h m M HH m m QN QN NM )Lll WALTER S. ADAMS, F EHILRDELPHI A,

PENNSYLVANIA, ASSIBG-NOR TO THE '3'. G.

BRILL 00., OF EHILA DEIQPHIA, IB' ENNSYEVANIA. A CQIZXBGRAYDION 0F PENNSYL- VANTA.

CAR-TRUCK.

Specification of IwttersYetmi-t.

?atented Oct. 28, 913.

Application filed July 17, 1912. Serial No. 709,917.

To all whom it may concern: Be it known that I, WALTER S. ADAMS, acitizen :of the United States, and a resident of the city and county of Philadelphia, State of Pennsylvania, and whose post-office address is care of The J. G. Brill (10., Sixty-second street and Woodland avenue, in said city, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification.

An object of my invention-is to support the car body-well within the .plane of the wheels and at a low point relatively to the rails, the latter resulting in a low center of gravity, which has many features of advantage, especially in cars intended for street rail-way service.

Another object of my invention is to relieve the truck side frames from stresses due to the -m ivement of the car body and load; to make, through the peculiar bolster construction herein described a self-contained means for easy rounding of curves without undue jar; and the avoidance of excessive side-swing at all times.

A still further object of my invention is to dispense with the usual bolster springs, incidentally reducing the number of springs required for the spring-support of the car body on the truck; and by a special arrange ment of the springs and bolster construction to dispense with the usual sand or springplank and the pairs of bolster links.

My invention, therefore, resides in the special construction and combination of elements hereinafter described and further pointed out in the claims.

In the drawing forming a part of this specification, Figure l is a side elevation of a truck embodying my improvements. F i 2 is a plan view of one half of the truck. the other being constructed identically. Fig. 3 is an enlarged side elevation, partly in section, of the intermediate portion of the side of the truck. Fig. 4: is an elevation of a portion of the truck, part1. in section, in the plane of the line {l4; of ig. 3, looking in the direction of the arrows. Fig. 5 is an enlarged longitudinal sectional elevation, taken on the plane of the line 5-5 of Fig. 3, looking in the direction of the arrows. Fig. 6 is a sectional elevation on the ,plane of the line 6-6 of Fig. 4 looking in the direction of the arrows. fig. 7 is a .plan view of one endof the bolster tie-bar and adjacent parts of the truck. I

,Similar reference characters designate similar parts throughout the several views.

The truck frame is of the usual or any desired construction, and comprises axles 1, wheels 2, axle boxes 3, and a truck frame comprising the side bars 4, pedestals 5, axlebox springs 5, pedestal extensions 6, and cross 'tie bars 7. I The truck frame is also provided with slower chord '8 consisting'ofa ar of angle iron riveted or otherwise suitably secured jto lugs 9 e3itendinig from the inner arm 10 ofthe pedestal 5.

In the drawing I have only showns'tibstantially one-half of the truck. It will be understood that both sides of the truckare constructed alike.

At 11 are spring seats conventionallysecured to the lower chord 8, preferably adjacent the pedestals 5. Upon the spring-seats rest. spiral springs -12,, each supporting a spring-cap 18, the upper portionjof which is provided with a walled recess 14 to provide a sliding support for the ends of a semi-elliptic leaf spring 15, which is disposed longitudinally of the truck, in "the planeof the side bars and between the lower chord 8 and side bar 4 the spring 15 being provided withthe usual band 16. It will be understood that both sides of thetruck are provided with duplicates of the springs 12 and 15 likewise situated.

Both 01 the springS 15 are, tied together transversely by a bolster tie-bar (or inner bolster) 17, consisting of a casting substantially rectangular in cross-section, and having an enlarged recess 18 at each end and alined apertures 19 to allow for the passage thro h and swinging of the bolster-links as w ifibe hereinafter described, abutments 1'93, and downwardly extending projections 20 formed with recesses 20 acting as seats to receive the band 16 of the springs 15. The outer-bolster comprises a hollow casting of inverted 'U-shaped form, consistin of the to we s 25, and isposed to form a central, depression 22 for the location of the center pivot, and end elevations 23" on which-the side bearings 24 are located. Adjacent. the ends of the bolster the side plates 25 are provided with downwardly extending lugs or projections 26, which in turn are aperwve b 21 and pendant side,

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tured at 27 to provide "for the passage of av laterally extending headed bolt 28.

As will be noticed by reference to Fig. 6, the bolster tic-bar (or inner bolster) l? is located within the outer bolster 21, their vertical walls and faces being parallel and closely adjacent each other.

The abutments 19' oi the tie-bar 17 are provided with wear plates 19* which are adapted to bear against other wear plates 19 secured to the ll-shaped corner pieces ll, which are in turn secured to the side bars as hereinafter described.

The tie-bar or inner bolster is provided with pairs of upwardly extending recessed bearings 29 open at the top in which are seated bushings 30. These bushings form bearings for the rounded journals 3]. 0t pivot pins 32 which latter have centrally squared portions 33; These pivot pins support the bolster links 34 which extend through the apertures l8, 19 in the tie bar 17 the upper ends of the links being provided with eyes 35 having squared apertures engaging the squared portions 33 oi the pivot pin, the lower ends of the links being provided with a laterally extending boss 86, which is longitudinally apertured and provided with a bushing 37, through which bushing the head tie-bolts 28 pass.

At 38 are the transoms, each consisting of upright lace-webs 39 and horizontal top webs 40. The transoms are secured to the side bars by conventional means comprising the corner-pieces il which are bolted or riveted to the side bars l, the ends 42 being bolted or riveted to the upright webs 39 of the transoms and the gusset plates 43, which rest directly upon the top of the side bars and transoms respectively, and which are additionally secured to the side bars through the medium of their depending end sections td.

The side plates 25 of the bolster are provided with wear-plates 45 located in line with the bolster links and their associated parts, which wear-platesdh are adapted to engage transom wear-plates t6 which are secured in place by their horizontal sections a? to the gusset plates and top web oi the transoms respect-ively. it thus provide sellcontained bolsten or means tor supporting the car, the tie bar, or inner bolster, which constitutes the base of the support of the bolster within itself, having a bearing upon the truck frame through the instrumentality of the supporting springs outside of the wheel gage, thereby providing an extended lateral support for the car body, the bolster spring base being extended longitudinally of the truck substantially adjacent the axle boxes or axles, the bolster links being splayed outwardly in approved form so as to give the bolster an efficient support on the truck frame, the whole being embodied in a sellcontained simple construction readily made and assembled and readily taken apart for repair or renewal.

While I have shown one embodiment of my invention, I do not desire to limit it to the specific construction shown, as it may be otherwise. Hence a truck embodying my invention may be otherwise constructed without departing from the spirit thereof Having described my invention, 1 claim:

1. in a car truck, means for suspending a car body, consisting of a multi-part bolster comprising two elements, the one being link supported from the other and the link supported member provided with side bearings, the car supporting member straddling and being supported on and below the bottom of the other, and means for connecting the non-link supported member with the truck frame.

2. in a car truck, means for suspending a car body consisting of a multi-part bolster comprising two elements, one link-supported from and beneath the other, springs carried by the truck and means for operatively connecting the non-link-supported member with said springs.

3. The combination in a truck, a truck frame, transoms, a bolster located between the transoms, springs on the truck frame, an inner bolster extending between the springs and located within the first named bolster and links pivotally supported within and on the inner bolster, their lower ends being connected with the first named bolster.

4. in a car truck, the combination with a truck frame having transoms, leaf springs longitudinally disposed and supported from the side trames, an inner bolster connecting said springs, a bolster within the transoms and straddling the said inner bolster and links supported upon the'inner bolster and at their lower ends pivotally connected with the other bolster.

5. In a car truck, the combination with a truck frame having transoms, a hollow bol ster between the t-ransoms, an inner bolster within the bolster, and a spring supported at its ends tromthe truck frameyertical apertures formed in the inner bolster, links pass ing through said apertures, pivot pins supporting the links on the inner bolster and pins pivotally connecting the hollow bolster with the lower ends of the links below the inner bolster.

6. In a car truck the combination ot wheels, axles, a truck frame, ahollow bolster, a second bolster link-supported by and beneath said hollow bolster and side hearings on said hollow bolster.

7. lln a car truck, the combination of wheels, axles, a truck frame, a bolster spring supported by said truck frame, means for preventing other than vertical movement of "said bolster, a second freely suspended mil rat

bolster, the outer bolster being suspended from the inner bolster, and means for allowing free substantially horizontal movement between said second and first bolsters in a direction parallel to the axles of said truck.

8. In a car truck, a multi-part member comprising two elements, one link supported horizontal movement with their vertical walls and faces substantially parallel and closely adjacent toeach other the car-sup porting bolster straddling and supported on and below the bottom of the other member.

11. In a car truck, a double bolster C0111- prising two members one freely movable horizontally within the other, the inner bolster having recessed bearings, and bolster links supported therein and connecting said members. e

12. In a car truck, a truck frame, a bolster supported by said frame, a second bolster swing supported beneath and on said first bolster, the car-supporting bolsterstraddling and supportedon and below the bottom of the other member, and means for allowing free substantially horizontal movement be-- tween said second and first bolster.

. 13. In a car truck, a truck frame, a bolster, supported by said frame, a second bolster swing supported beneath and on said first bolster, the car-supporting bolster straddling and supported on and below the bottom of the other member means for allowing free substantially horizontal movement between said second and first bolster and means for .preventing other than vertical movement of said first bolster.

14. In a cal-truck, a truck frame having a lower chord, springs on said lower chord, leaf springs, an inner bolster connected with said leaf springs, and an outer bolster with side bearings pivotally supported over and about the inner bolster.

15. In a car truck, a truck frame, an outer bolster having a depressed section, elevated sections and side bearings on'the ends of the elevated sections, an inner bolster, links pendant from the top of the inner bolster below the elevated portion of the outer bolster and side plates on the outer bolster connected with said links.

16. In a car truck, a truck frame having an upper chord, a lower chord and inner bolsterv having a shoulder thereon in line with the upper chord, a projection extending from the upper chord, and a leaf spring secured to said projection andhaving its ends supported onthe lower chord.

17. In a, car truck, an inner bolster having link apertures with bearings in said apertures, links passing through said apertures, an outer bolster having a top plate with side and center bearings thereon, side plates adjacent the sides of the inner bolster, a pivot bar secured to the side plates of the outer bolster below the inner bolster, a pivot bar, and a link connecting said pivot bars.-

18. In a car truck, an inner a-nd'outer bolster, a link having a long, lower journal, a pivot pin at the top, bearings on the top of the inner bolster for the same and a lower pivoting pin and bearings therefor.

Signed at the city and county of Philadelphia, State of Pennsylvania, this 3rd day of July, 1912.

WALTER s. ADAMS.

IVitnesses:

HENRY C. ESLING, H. F. MCKILLIP.

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