US829727A - Tandem spring draft-rigging for railway-cars. - Google Patents

Description

PATENTED AUG. 28, 1906.

CARS.

J. P. OGONNOR. TANDEM SPRING DRAFT RIGGING FOR RAILWAY APPLICATION IILED FEB. 16. 1906.

2 SHEETS-SHEET 1.

N0- 829,'727. PATENTED AUG. 28, 1906- J. F. O'CONNOR. TANDEM SPRING DRAFT RIGGING FOR RAILWAY CARS.

APPLIOATION FILED FEB. 16. 1906.

THEETSSHEET 2.

- To all whom, it may concern:

UNITED STATES "PATENT, OFFICE.

JOHN F. OCONNOR, or CHICAGO, ILLINOIS, ASSIGNOR T0 w. H. MINER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF-ILLINOIS.

TANDEM SPRING-DRAFT-RIGGING FOR RAILWAY-CARS.-

-Specification of Letters Patent.

Patented Aug. 28, 1906."

Application filed february 1B, 1906- Serial No. 301.341.

Be it knoun that 1, JOHN F. OCoNNoR, a citizen of the United States, residing in Chi cago, in the county of Cook and State .of Illinois, have invented a new and useful Improvement in Tandem Spring Draft-Rigging for Railway-Cars, of which the following is a specification. dfly invention relates to improvements in tandem spring draft-rigging for railway-cars. The Ob ect of my invention is to rovide a tandem spring draft-rigging for rai way-cars of a strong, simple, efficient, and durable COD. struction which will be compact in form and occupy a comparatively limited amount of space and which may be made of any desired tension or cushioning power without'mate- Y rially increasing the space occupied by it, in

which there will be no liability to impart to the springs a permanent set or injury, however great or severemay be the strain 'to which they are subjected, and which will properly cushion the movements of the drawar in both pulling and buffing. 1 "My invention consists in the means I employ'to practically accomplish this object or result-that is to say, it consists, in connection with the draw-bar and draw-bar strap and the draft-sills and side plates or stop castings secured thereto, of a reciprocating springcage having pockets or chambers to receive each a series-of flat spring-plates and a pain of followers, one at the front and the other at the rear of the reciprocating spring-cage, and adapted to abut against the same when the s ring -plates are compressed, bent, or deected to the desired extent, the springecage and the followers having concave and convex bearing-surfaces to engage the springs and cause the same to be deflected under the movement of the followers and s ring-cage,

preferably onthe followers and the concave earing-faces onthe spring-cage and two series of straightilat springsfitting in the cham' bersor pockets of the spring-cage and interposed between the spring-cage and the front and rear followers, respectively.

My invention also consists in the novel con-' struction of parts and devices and in the novel combinations of parts and devices herein-shown and described.

the convex bearing-surfaces or aces being part of'this specification, Figure 1' is a side elevation, partly in central vertical section, of the tandem spring draft-rigging embodying my invention. Fig. 2 is a planview,v artly in horizontal section. Fig. 3 is an en arged vertical cross-section on line 3 3 of Fig. 1.

Fig. 4 is a detail perspective view of the reciprocating spring-cage, and Fig. 5 is a detail perspective view of one of the followers.

In the drawings, A represents the center sills or draft-sills of the framework of a-car to which the draft-rigging is applied. A is the front or cross sill, A the carry-iron, and A the body-bolster or transverse frame-piece at the rear of the'draft-rigging.

B is the car-coupler, B the draw-bar, and B the draw-bar strap, yoke, or extension secured to the draw-bar in the customary man. ner by bolts or rivets.

O O are the side plates, cheek-plates, or

stop-castings of the draft-rigging, the same 1 havingfront and rear stops or shoulders c c for the front and rear followers D D to abut against and being rigidly secured to the center sills or draft-sills of the car by rivets or bolts 0 The side plates or stop-castings O have the customary upper integral guides or flanges O and also lower removable guides C secured in place by bolts 0 so that upon removal of the lower guides O the springs, spring cage or box, and followers of the draftrigging may be'easily and conveniently removed and replaced when desired.

F is a movable or reciprocating spring cage or box having front and rear chambers or, pockets F F? to receive the tandem-arranged front and rear series of fiat straight springs G G", which are inter osed between the spring cage or box F and t e front and rear'followers DD.

The front and rear followers D D each have" convex curved bearing-faces (1, preferably of a skeleton or web construction, as illustrated in the drawing to enga o and bear against the springs G at the mi dle portion thereof, and the reciprocating spring cage or box F has correspondingly-curved concave bearing-surfaces f, so that the springs G G engage the cage at their ends when the springs are in their straight or unflexed osition, as will be readily understood from 1g. 2 of the drawings. While it isimmaterial whether the 0011- In the accompanying'drawings, forming a vex spring-engaging faces be on the followers 4 in the ends of the cured toget spring cage in manufacture,

'of te or on the spring cage or box, I preferto make the followers with the convex bearing-faces and the spring cage or box with the concave bearing-faces. The followers D D are du plicates of each other, as this is a convenience and each is provided with flanges or walls (1, which preferably fit withspring cage or box F and telescope therewith. The followers also have shoulders (1 which abut against the ends of the spring cage or box F and limit the extent escoping movement of the followers in respect to the spring'cage or box, and the consequent compression or flexure of the s )rings. Each set or series G G of straight at spring-plates are preferably loosely seer by bolts or rivets 9 near the middleof the springs, so as not to interfere with their flexure, the bolts serving to hold the springs to ether and being thus a convenience in handIing the s rings.

he spring cage or ox F, in connection with the series of straight flatspring-plates G and the curved bearin face or wall f ofthe cage into and againstw 'ch the springs are flexed, constitutes a closed or air-compression chamber F or F in which as the springs are bent by, the sudden movements of the draw-bar'the air is ractically confined and compressed, thus adhing materially to the cushioning power of the draft-riggin as the air can escape from this closed 0 amber ut slowly through'the very limited openings or crevices existing between the upper and lates and the u lower edges of the spring- 'ng walls of t e per and lower surroun spring'box or cage.

claim-- 1. In a draft-rigging, the combination with side plates or stop-castings and the draw-bar and draw-bar strap or extension, of a reciprocating s rin cage or'box furnished with a" pair of 0 am ers or pockets to receive two series or sets of flat straight spring-plates, a"

pair of followers, said followers and said or box having cooperating curved bearing-faces engaging the springs, and two tandem-arranged flat straight springs interposed in the cham bers or pockets of said spring cage or box between it and the followers, substantially as specified. I 2. In a draft-rigging, the combination with side plates or stop-castings and the draw-bar and draw-bar strap or extension, of a reciprocating spring cage or box furnished with a pair of chambers or pockets to receive two series or sets of flat straight spring-plates, a pair of followers, said followers and said spring cage or box having cooperating curved bearing-faces engaging the s, and two tandem-arranged sets or series of flat straight springs interposed in the chani ers or pockets of said spring cage or box between it and the followers, said followers curved bearing-faces -a follower and sets or series of rocating spring cage or box furnished with a' panof chambers or pockets to receive two series or sets of flat straight spring-plates, a pair of followers, said followers and said spring cage or box having cooperating curved bearing-faces engaging the springs, and two tandem-arranged sets or series of flat straight springs interposed in the chambers or pockets of said spring cage or box between it and the followers, said followers having shoulders abutting against the ends of said spring cage or box to limit the extent of flexure or compression of the springs, substantially as specified.

' 4. In a draft-rigging, the combination with the draw-bar and draw-bar strap or extension, and side plates or stop-castings having front and rear stops for the followers to abut against, of a reciprocating spring cage or box, a follower and a series of straight, flat springs, interposed between said follower and the spring cage or box, said spring cage or box and the follower having cooperating to engagethe springs and cause their flexure, substantially as specified.

5. In a draft-rigging, the combination with the draw-bar and draw-bar strap or extension, and side plates or stop-castings having front and rear stops for the followers to abut against, of a reciprocating spring cage or box, -a series of straight, flat sprin s, interposed between said follower and t e spring cage or box, said spring cage or box and the follower having cooperating curved bearing-faces to engage the springs and cause their flexure, and means for connecting said series of straight flat springs together, substantially as specified.

' 6. In a draft-rigging, the combination with the :draw-bar and draw-bar strap or extension, and side plates or stop-castings having front and rear stops for the followers toabut against, of a reciprocating spring cage or box,

.a follower and a series of straight, flat springs, interposed between said follower and the spring cage or box, said spring cage or b0x and the follower having cooperating curved bearing-faces to engage the springs and cause their flexure, said side plates or stop castings having a lower removable guide upon which said spring cage or box and said follower reciprocates, substantially as specified.

1 7. In a draft-rigging, the combination with the draw-bar, and draw-bar strap or extension, of side plates or stop-castings having. front and rear stops for the followers to abut against, of-areciprocating spring cage or box having a closed or air-confining pocket to reand operating1 to compress the air in the ceive the springs and a curved bearing-face chamber of t e spring cage or box as the to engage the springs, a follower having a springs are flexed, and thus increasing the correspondingly-curved bearing to engage resisting capacity of the draft-rigging, subthe springs, and a series of straight flat stantially as specfied.

springs interposed between said follower and 9. A combined air and spring resistance the spring cage or box and operating to corndraft-rigging havin in combination a spring press the air in the confined chamber of the cage. .or box, a ollowerand interposed cage or box as the springs are flexed, substraight flat springs fitting the interior of stantially as specified. said spring box or cage and forming there- 8. In a draft-rigging, the combination with with a closed air-chamber, substantially as a spring cage or box having a closed or airspecified.

confining chamber into whichthe' springs are J OHN F. O CONNOR. flexed, a follower and a series of straight flat Witnesses: spring-plates interposed between the follower EDMUND Anooox,

and the bearing-face of the spring cage or box H. M. MUNDAY.

Images