US1226244A - Friction spring unit for draft-riggings. - Google Patents

Description

J. F. OCONNOR.

FRICTION SPRLNG- UNIT FOR DRAFT RIGGINGS.

APPLICATION FILED OCT. [8. 1915.

Patented May15 1917.

Z SHEETS-SHEET l.

IN V E N TOR. 70k I'fiwr 1 TTORNE Y ll'al Q Q a WITNESS W p, Z

J. F. OCUNNOR.

FRICTION SPRING UNIT FOR DRAFT RIGGING'S.

APPLICATION FlLED MIT. 18, 1915- 1,226,244: Patented May15,1917.

2 SHEETS-SHEET 2.

v INVENTOR. WITNLSS L/b/UzF mar 1 Q TTORNEY- 0 hom it may concern: i

Be it known that I, JOHN F. OCounon, a

citizen of vthe United States,'residing' at Chicagm-in the county of Oook and .2 Illinois, have invented a certain new and useful Improvement in Friction Spring Units for Draft-Riggings, ofwhich the -following is. a full, clear, concise, and ekact'description, reference being had to the accompanyingdrawings, forming a part of this specification.

This invention relates to improvements in friction spring units for draft riggings.

An object of the invention is to provide a 1' unit for railway draft riggings which particularly adapted to replace the ()l(l11 1211y springsnow used in tandem gears to thereby obtain a higher capacity."

- Another ObJBCl) of the invention 1's to pro- ".E vide a shock absorbing member wherein are employed a plurality of plate Springs which are confined between and supported by followers, the followers and springs having as sociated therewith friction means arranged to flex the plate springs against portions of the followers 0 In the drawing forming a part ofthis specification, Figure 1 longitudinal, verticalsectioual view of draft rigging showing it my Improvements in connection therewith;

Fig. 2 is a horizontal sectional v1ew-taken substantially on the line 22 of F g. 1. Fig.

3 is a vertical, transverse sectional view taken substantially on the llne 33 of Fig.

1. Figs. '4', 5 and 6 are detailperspective views of a follower, shoe and wedge, respectively, employed in my invention.

Insaid drawing, 10-l0 denote draft sills to which are attached stop members 11-11 ha ring the usual front.

1 eachpocket ofthe tandem yoke is are employed, all

y and rear end stops, front and rear intermediate stops and limitinn stops for a tandem gear. The draw-bar 12 has connected therewith a yoke 13 of the usual tandem gear typ and mounted within my im- The fol- I l- 14 and transversely extending tie plates desired construction. Each of the improved units, which I have designated consists oftwo followers 16 and 17, each hayingion its inner face-an inwardly ex tending, hollow, box-like projection 18, the

s'rarns r State of the followerslfi of any well known or generally by the reference A,

walls parallel to the Jana r. OCONNOR, or CHICAGO, ILLINOIS, ASSIGNOR T0 WILLIAM H. MINER, or y T CHAZY, NEW YORK. y I

-' riarorron'srnme UNIT roe DnArr-R'IGGINGs.

Specification of Letters Patent. I Patented May 15, 191?.

i l I Application filed'October 18,- 1915 Serial'No. 56,426.

side-walls 19ofwhicharestraight and the upper and lower interior walls 20-20 thereof are concaved. Mounted between the in Figs. 1 and 3. At their ends, the shoes I 22 are provided with beveled or wedge faces 25 with which cooperate wedges 26-26 detachably carried by the followers 16 and 17, the wedges 26 being held in pro er position preferably means of studs 2? which engage in suitable holes 28 in the followers.

Inoperation, upon relative approach of and 17-of each unit, the approaching movement of the wedges 26 will force the shoes 22 apart in an up and down direction. glhereupon, the sets of spring plates 21 wil be flexed in planes perpendicular to the axis of the gear, theupper set of.

spring plates being convexed upwardly'between the upper surfaces 20 of the followers and surface 23 of the u'ppershoe 22, and the lower set of spring" plates 21 will be' flexed downwardly between the convex surface 23 of the lower shoe and lower surfaces20 of the followers.

are held in proper assembled position by any suitable means such as the rivets 29, andthe shoes 22-and. upper and lower surfaces 20 -20 of the followers are suitably recessed to accommodate the ends of the rivets.

From the preceding description, it will be I seen thatl have provided a unit, which combines within itself spring and friction acting elements compactly arranged, and the ca,- pacity ofjeach unit may be made relatively great on account of the number of spring? plates which may be employed. Iclaim: i 1. A shock absorbing device for draft' righaving hollow extensions on their inner op=- posits faces, said extensions havin the inner curved, sets of plate springs interposed beaxis of t e device 90- I The spring plates of each set gings which comprises, a pair of followers".

tween said followers and mounted within said recesses, and meansfor flexing said sets of plate springs transversely against said curved walls upon relative approach of the followers;

ir-shockabsorbing device'for draft riggings which comprises, a pair of followers having hollow extensions on their inner opposite faces, said extensions having curved inner walls, of plate springs interposed between said followers and mounted within said recesses, and means for flexing said sets pf plate springs against saidcurved walls upon relative approach of the followers, said means including wedges carriedby the followers and friction shoes'cooperating therewith."

3. Ina'device of the character described, the combination with a pair relatively movable "followers, each of'said followers having a recess on its inner face, opposite nall v between said followers and supported thereby, said plate springs normally bearing against said curved surfaces, and wedges carried by the inner faces of said followers and adapted to enter between said sets pf sprin s, whereby, upon relative approach of--- said tollowers, the plate springs are flexed in a direction transverse to the line of moveinent of said followers against said curved faces. 7

In witness that I claim the foregoing I have hereunto subscribed my name this 29th day of Sept.,'19l5.' I I JOHN F. OCONNOR.

Images