US1391203A - Draft-gear yoke - Google Patents

Description

' e. c MURRAY.

DRAFT GEAR YOKE.

APPLICATION FILED 05cm. 1919.

1,391,203. PatentedSept. 20,1921.

v 2 SHEETS-SHEET l- "7 g llmflllllllllllllllllllllllllllllllil! G. C. MURRAY.

DRAFT GEAR YOKE.

APPLICATION FILED DEC-1|, 1919.

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Patented Sept. 20,1921.

Z /M/ ,.;%MM%% PATENT OFFICE.

GEORGE C. MURRAY, 01'! CHICAGO; ILLINOIS.

DRAFT-GEAR YOKE;

Specification of Letters Patent. Patented Sept]. 20, 1921.

Application filed December 11, 1919. SeIiaI No. 344,003.

To all lwhom'it may concern:

Be it known that I, Gnonon C. MURRAY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Draft-Gear Yokes, of which the following is a specification.

This invention relates to a'draft gear yoke for railway cars and its purpose is to provide a yoke having improved means for securing the coupler butt therein.

The rinoipal object of the invention is to provide a shouldered coupler butt in combination with a yoke having-a movable block adapted to be tilted into a position wherein it engages one of the shoulders of the butt. A further object is to provide a yoke having a movable block adapted to lie in a substantially horizontal position during the insertion of the coupler butt into the yoke and to be tilted forwardly about its lower edge after the coupler has been inserted, improved means being provided for retaining the block in its upright position wherein it engages one of the shoulders of the butt. Other objects relate to various other features of construction and arrangement which will be clescribed more fully hereinafter.

The nature of the invention will be understood from the following specification taken with the accompanying drawings in which one embodiment is illustrated.

In the drawings Figure 1 shows a side elevation of the coupler butt and yoke with the forward part of the yoke illustrated in vertical section on the line 11 ofFig. 2;

Fig. 2 is a vertical section through a shank of the coupler showing a front elevation of the yoke andcoupler butt; I

Fig. 3 is a sectional view similar to that of Fig. 1 throughthe forward endof'the yokeshowing the position of the movable block during the insertion of the coupler butt; 1

Fig. 4 shows a horizontal section through the forward end of the yoke on the line 44 of Fig. 1 with the coupler butt removed;

Fig. 5 shows a horizontal sectional view through the forward end of the yoke throu h the line 5-5 of Fig. 3 with the cou- V pler' butt removed;

Fig. 6 shows an enlarged perspective view of the forward end of the'lower wall of the yoke showing the means for supporting and guiding the movable block; and

Fig. 7 is a perspective view of the movable,

extends downwardly to engage the upper' shoulder 16 of the coupler butt 17 The coupler butt 17 is adapted to rest at its rear end on the lower wall 12 of the yoke as shown at 18. From the part 18, the lower wall inclines downwardly as shown at 19 and is then directed forwardly as shown at 20, thusforming. a depression 21 beneath the coupler-butt. The part20 of the lower wall terminates in a. transverse shoulder 22 and this shoulder terminates at its ends in forwardly extendinglugsor flanges 23 which are formed integrally with the side walls 14. The shoulder 22 and the lug 23 are adapted to coact. with the movable block 25 which is adapted to engage the lower shoulder 26 of the coupler butt. This block is provided with a rounded lower edge 25 which is adapted to rotate on the rounded surface formed on the lower wall at the lower edge of the'shoulder 22 and the block increases in v thickness toward its upper edge, as shown in Figs. 1 and 3.-

'During'the insertion of the coupler butt into the yoke, the block 25 is adapted to rest in a substantially horizontal position .onthepart 20 of the lower wall, as illustrated in Fig. 3. The block' 25 is provided 7 at its upper edge with longitudinally extending ears or lugs-27 and when theblock 25 is in its horizontal positi0n,-'these ears are adapted to lie rearwardly of the curved ribs or guides 28 which are'formed integrally with the side walls 14. and extend upwardly and forwardly from the part 20 of the lower wall. When inserting the coupler or drawbar butt into the yoke, the shank 17 of the coupler or .drawbar is tilted downwardly in order to pass'the coupler butt beneath the shoulder 15 and after the coupler butt has vreachedthe rearward position illustrated by full lines in Fig. 8, the block 25 is tilted upwardly about its lower edge until the lugs 27 pass over the upper ends of the guides 28. During this tilting movement, the block is lifted bodily from the lower wall of the yoke andafter it has reached a position beyond the upper'edges of the guides 28, the block drops into position between the lugs 23 and the forward edges 28 of the guides, with the lower edge of the'block resting against the shoulder 22. The block is then held rigidly againstmovement and is secured in the proper position to coact with the lower shoulder of the coupler butt when the latter is in its normal forward position. When the coupler butt moves rearwardly during the compression of the draft gear, the

ribs or guides 28 will'prevent the block fromtilting downwardly to its lower position. For the purpose of facilitating the movement of the block,'the portion 20 of the lower wall is provided with an aperture 29 into which a suitable toolmay be inserted to engage a centrally located depression 30 'which is formed in the underside of the block. An upward push on the tool inserted through the aperture 29 will lift the block upwardly through the guide ribs 28.

' wardly, longitudinal lugs 32 are preferabl In order to prevent the rearward movement of the block 25 when it is being pushed upformed on the lower edges of the block and these lugs project beyond the ribs 28 so that they are a daptedto engage the forward sides of the ribs during the tilting of the block.'

When the coupler butt i to be removed from the yoke, it is first displaced rearwardly and then :the block is elevated in the reverse dir of removable device for securing the block in position. After the coupler butt has been inserted and at all times during the operationof the draft gear, the coupler butt is supported entirely by .the lower wall of the yoke upon which it rests directly so that all strains areremoved from the block 25 ex- 'cept the forward force imparted thereto by the lower shoulder of the coupler butt.

. 1 Although I have shown and described one formof the invention for purposesof illustration, it will be understood that it may be constructed in various other forms without departing from claims.

I claim 1. The combination with a yokehaving the scope of the appended upp'erand lower arms and a hooded forward end, of a drawbar having a shouldered butt adapted to be received within said hooded end, said lower arm being'adapted to engage and support said butt, means carried by said -yoke for engaging .one shoulder of said butt,

a movable block being adapted to be tilted upwardly and forwardly about its lower edge into position to engage the other shoulder of said butt after the latter has been inserted in said yoke, and means formed integrally withsaid yoke for holding said block in said last-namedposition after it has been tilted. f

- 2. The combination with a yoke having upper and lower arms and a hooded forward end, of a drawbar having a shouldered" butt adapted to" be received within said hooded end, said lower arm having a part adapted to engage and support said'butt, means carried by said yoke for engaging onev shoulder of said butt, said yoke being provided with a lug adjacent. the other shoulderof said butt, a movable block adapted to'be tilted. V forwardly of said yoke to engage said other shoulder of said butt after said butt has been displaced rearwardly on said lower arm, and means in addition to said lower wallformed integrally with said yoke to hold said block in position against said lug. 1

3. The combination with a yoke having; upper and lower arms and a hooded for-. Y ward end, of a drawbar having a shouldered butt adapted rto 'be received within; said hooded end, means carriedby said hooded end to engage one shoulder of said butt, a.

movable block adapted to be tilted into'posi tion' to engage the other shoulder-of. said I butt, and means carried by saidyoke for guiding said block in its tilting ,movement and preventing the reverse tilting thereof. 4:. The combination. with a yoke having end, of a drawbar having a shouldered butt adapted to be received within said hooded "100. upper and lower arms anda hooded forward I end, means carried by'said hooded end to engage one shoulder of saidbutt, a movable, block adapted to be tilted into position to J engage the other shoulder of said butt, and

means carried by said yoke for guiding said 7 block in its tilting movement, said lastnamed means being adapted to hold said block in said position engaging said other shoulder of said'butt. V r r 5. The combination with "a yokexhaving. upper and lower. arms and a hooded forward end, of a drawbar having a shouldered butt adapted to bereceived within said hooded" end, means carried by said hooded end to"; engage one shoulder of said butt, and a movable block adapted tobe tilted into po sition to engage the'other shoulder of said butt, said block beingcapable of'being tilted to inoperative position within said hooded end to release said butt onlyafter the latter has been' displaced .rearwardly' in said jyoke, said yoke having a part over which a part of said block must belifted inmoving from one position to the other.

6. The combination with a yoke having v upper and lower arms and a hooded forward end, of a drawbar having a shouldered butt adapted to be received within said hooded over which a part of said block must be lifted in moving from one position to the end,

other, said block being located entirely infront of said butt when engaging said other shoulder, said butt being supported entirely by the lower arm of said yoke.

7. The combination with a yoke having upper and lower arms and a hooded forward end, of a drawbar provided with a shouldered butt adapted to be received within said hooded end, a flange carriedat the forward end of said upper arm to engage the upper shoulder of said butt, another flange carried at the forward end of the lower arm of said yoke, a movable block seated within said forward end and adapted to be tilted about its lower edge to a position against said lastnamed flange to engagev the lower shoulder of said butt, a projecting part carried by said yoke, and adapted to be passed over said projection during the tilting of said block.

8. The combination with a yoke having upper and lower arms and a hooded forward end, of a drawbar provided with a shouldered butt adapted to be received within said hooded end, a flange carried at the forward end of said upper arm to engage the upper shoulder of said butt, another flange carried at the forward end of the lower arm of said yoke, a movable block seated within said forward end and adapted to be tilted about its lower edge to a position against said lastnamed flange to engage the lower shoulder of said butt, a projecting part carried by said yoke, and means carried by said block and adapted to be passed over said projecting art during the tilting of said block, said block being adapted to seat between said last-named flange and said projecting part when it is in position to engage the lower shoulder of said butt.

9. The combination with a yoke having upper and lower arms and a hooded forward of a drawbar having a shouldered butt adapted to be received within said hooded end, a shoulder carried by said upper arm to engage the upper shoulder of saidbutt, another shoulder carried at the forward end of said lower arm, a movable block adapted to rest on said lower arm behind said second-named shoulder during the insertion of said butt into said yoke, said block being and means carried by said block.

capable of being tilted upwardly to a position against said second-named shoulder after said butt has been displaced rearwardly in said yoke, projecting parts carried by the side walls of said yoke, and projecting lugs carried by said block and adapted to pass over said projecting parts in moving said block to butt-engaging position.

10. The combination with a yoke having upper and lower arms and side walls forming a hooded forward end, of a drawbar having a shoulderedbutt, a flange carried at the forward end of said upper arm to engage the upper shoulder of said butt, another flange carried at the end of said lower arm, lugs projecting upwardly against said side walls at the ends of said second-named flange, other projecting parts formed integrally with said side walls rearwardly of said lugs, and a movable block adapted to seat between said projecting parts and said lugs and to engage said second-named flange, said block being adapted to engage the lower shoulder of said butt.

11. The combination with a yoke having upper and lower arms and side walls forming a hooded forward end, of a drawbar having a shouldered butt, a flange carried at the forward end of said upper arm to engage the upper shoulder of said butt, another flange carried at the end of said lower arm, lugs projecting upwardly against said side walls at the ends of said second-named flange, ribs formed on the side walls of said yoke rearwardly of said lugs, and a movable block adapted to rest on said lower arm and to underlie said butt during the insertion of the butt into said yoke, said block having longitudinally projecting lugs located rearwardly of said ribs when said block is resting on said lower arm, said block being adapted to be tilted upwardly and forwardly to a position wherein it seats against said second-named flange and said first-named lugs.

12. The combination with ayoke having upper and lower arms and side walls forming a hooded forward end, of a drawbar having a shouldered butt, a flange carried at the forward end of said upper arm to engage the upper shoulder of said butt, another flang carried at the end of said lower arm, lugs projecting upwardly against said side walls at the ends of said second-named flange, ribs formed on the side walls of said yoke rearwardly of said lugs, a movable block adapted to rest on said lower arm and to underlie said butt during the insertion of the butt into said yoke, said block having longitudinally projecting lugs located rearwardly of said ribs when said block is resting on said lower arm, said block being adapted to be tilted upwardly and forwardly to a position wherein it seats against said secondnamed flange and said first-named lugs, the

projecting lugson said block being adapted to drop downwardly between the ends of said ribs and said first-named lugs When said block reaches its forward position.

13. The combination with a yoke having upper and lower arms and side walls forming a hooded forward end, of a drawbar having a shouldered butt, a flange carried at the forward end of said'upper arm to engage the'upper shoulder of said butt, a second flange carried at the forward end of said lower arm, a movableblock adapted to rest on the lower arm of said yoke rearwardly of said second-named flange during the insertion of said butt into said yoke, ribs formed on the side Walls of said yoke rearwardly of said second-named flange'and at the ends of said block, and lugs formed on the ends of said block and overlapping said ribs rear; wardly thereof, said block being adapted to second-named flange and its rearward face seats against the forward ends of said ribs,

said block in said last-named position being:

adapted to engage the lower shoulder ofsaid butt.

my name.

GEORGE o, MURRAY.

In testimony whereof, I have subscribed V

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