US954071A

US954071A - Draft-gear.

Info

Publication number: US954071A
Application number: US51719209A
Authority: US
Inventors: Olof Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-09-11
Filing date: 1909-09-11
Publication date: 1910-04-05
Anticipated expiration: 1927-04-05

Description

, 0. ANDERSON.

DRAFT GEAR. APPLICATION TILED SEPT. 11, 1909,

Patented Apr. 5, 191% 2 SHEETS-SHEET 1.

O. ANDERSON.

DRAFT GEAR. I APPLICATION TILED SEPT. 11 1909.

Patented Apr. 5,.1910.

2 SHEETS-SHEET 2.

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OLOF ANDERSON, or CHICAGO, ILLINois.

DRAFT-GEAR.

To all whom it m concern:

Be it known that 1,-OL0F ANDERSON, a citizen of the United States, residing at Ohicago, in the county of Cook, a11d State of Illinois, have invented a new and useful Improvement in Draft-Gears, of which the following is a specification.

My object isto provide certain improvements in the construction and arrangement of the spring-tensionihg follower details of railway car-body draftg'ears, with a view to interposing between" the drawbar and draft-s rings graduating mechanism which will, e ect rapidly-increasingspring-resistance, with attendant advantages, against movement of the drawbar in either direction.

It is further my object to provide a particularly strong, durable and eflicient construction for the purpose defined, which may be readily applied to car-bodies hitherto in use without necessitating any material change in the under-structure details of such bodies;

In the accompanying drawings, which show my invention applied to one form of draftrig 'ing,-Figure 1 is a broken, partly plan an partly plan-sectional view of so much of adraft-gear as is thought'necessary for a clear understanding of'the construction and operation of my improvements,which are shown in normal position; Fig. 2, a view nearly similar in character to Fig. 1 and showing the position of moving parts when the draftsprings are compressed; Fig. 3, an enlarged section on line 3 in Fig. 2; Fight, an 'en-' larged perspective view of one of a pair of follower-blocks; Fig. 5,. a similar view of one of a pair of spring-caps; and Fig. 6, a

similar view of a rocker, or lever, interposed.

between the follower-blocks.

In the construct-ion shown, 7, T represent the center-sills of a car and -8 stationary angle-iron guides. Fastcned against the center-sills are the stops, or brackets, 9, 10.

Bolts 11 pass through the anglebars and brackets 9 and 10, as indicated.

12 is the socket-strap, or yoke, of the draft-gear secured to the shank of the drawhead, in a common' manner. Seated nor mally against the stops 9 1s a casting, or

follower-block, 13 having, as shown most i Specification of Letters I Patent.

atented Apr. 5, 1910.

Application filed' September 11, 1909. Serial No. 517,192.

is a spring-cap, 19 provided in its inner face with a spring-positioning boss 20 and in its.

outer face with a concave 'socket2l terminating at one edge in the lip 22. Confined between the parts 13, "19 are the inner and outer compan1on-springs 23.

24 is {a follower-block seated normally against the stops 1O andeorresponding in its details of construction with the followerblock 13, described. ;Slidin'g against the block 24 is a spring-cap- 25, corresponding in all its details-with the cap 19 described. Between the parts 2 1, 25 are the innerand outer confined springs 26 corresponding in every way with the springs 23 described. The follower-blocks are slidingly mounted in the guides formed by the an -lesbars 8 and the upper and'lower sides of the yoke 12. The follower-blocks are. reversed with relation to each other in the guides, wherethe socket 21 of the sprin -cap 19 is directly opposite the serrated face 16 of the block 2-1 and the socket-portion 21 of the cap 25 is directly opposite the serrated face 16 of the block 13. Loosely mounted between the follower-blocks is a lever, or

rocker, 27 shaped as indicated and formed When the follower-blocks are in relatively extended position against the stops 9, 10, the

lever 27 occupies the position shown in Fig. l, engaging the follower-blocks near the outer ends of the faces 16. The parts are held in this position by the tension of the springs 23,- 26. A pull upon the drawbar 13 draws the rear endportion of the yoke 12 against the follower-block 13, causing the lever 27 to move toward, or to, the position shown in Fig. 2. While thus moving it con'ipresses the

springs

23, 26 andis turned on its axis by the approach of the serrated surfaces 16. The rocker thus operates as a changing", .or shortening, lever, gradually increasing the effect of the resistance of the springs against the approach of the follower-blocks. The resistance against movement of the draw-head and drawbar,

therefore, is gradually increased, thereby caps and shiftably engaging said bearingtending to prevent sudden tensioning, or yielding, of the springs with consequent jar in service.

In the movement of the drawbar in the direction to the right, in Figs. 1 and 2, the follower-block 13 is pressed against the stops 9 and the other follower-block is moved in the direction thereof, effecting a rocking of the lever 27, in the same manner as before described and with similar results. The serrations in the meeting faces 16,81 tend to steady the rocking lever in itsmovements, but they may be dispensed with-if desired. The rocking lever and followerblocks are held securely against removal by the angle-iron guides 8 and upper and lower, or side, bars of the yoke 12.

The concavo-convex meeting faces 21, 30 oll'er material frictional resistance to the movements of the lever. This is an important advantage, for the reason, more especially, that it tends to retard the return of the parts to normal position and thus, in a large measure, neutralizes or absorbs shock against the stops 9, 10. I

My improvement may be variously modifiedin the matter of details of construction to adapt it for example to different types of draft-riggings, without departing from the spirit of my invention as defined byithe claims.

lVhat I claim as new and desire to secure by Letters Patent is 1. In a draft-gear, the combination of a pair of opposed follower-blocks, each presenting a bearing-face and carrying a draftspring and a draft-spring cap, and a rocking-lever interposed between the follower-- blocks in engagement with said draft-spring faces, the lever operating by shifting under the spring-teusioning movement of a follower-block to gradually increase the spring resistance against said movement, for the purpose set. forth.

2. In a draft-gear, the combination of a pair of opposed follower-blocks, each presenting a bearing-face and carrying a draftspring and a draft spring cap, and a rocking-lever interposed between the followerblocks in frictional turning engagement with said draft-spring caps and shiftably engaging said bearing-faces, the lever operating by shifting under the spring-tensioning movement of a follower-block to gradually increase the spring resistance against said movement, and the engagement of the lever and spring caps producing frictional resistance against movement of the follower block, for the purpose set forth.

In a draft-gear, the combination of a pair of opposed follower-blocks, each presenting a serrated bearing-face and carrying a draft-spring and a draft-spring cap, and

a rocking-lever interposed between the follower'blocks having convex portions engaging said spring caps and serrated face-pen tions engaging said serrated bearingfaces, the lever operating by shifting under the spring-tensioning movement of a follo\ ver-v block to gradually increase the spring resistance against said movement, and the serrated engaging-faces preventing undue slip between the lever and follower-blocks, for the purposese't forth.

' OLOF ANDERSON. In presence of- K. M. CORNWALL.

R. A. SCHAEIER.