US1906367A

US1906367A - Railway brake

Info

Publication number: US1906367A
Application number: US430081A
Authority: US
Inventors: Percy B Camp
Original assignee: UNIVERSAL DRAFT GEAR ATTACHMEN
Current assignee: UNIVERSAL DRAFT GEAR ATTACHMEN; UNIVERSAL DRAFT GEAR ATTACHMENT CO
Priority date: 1930-02-20
Filing date: 1930-02-20
Publication date: 1933-05-02
Anticipated expiration: 1950-05-02

Description

May 2, 1933- P. B. cAMP 1,906,367

RAILWAY BRAKE Filed Feb. 2o, 1930 Patented May 2, 1933 UNITED STATES PEROY B. CAMP, or MAYwoon. ILLINOIS, AssI'GNoR To UNIvERsALDRAFT enen ATTACHMENT oo., AfcORPOItAIION or ILLINOIS RAILWAY BRAKE This invention relates to railway brakes and more particularly tothe means for se-` curing the ends of the brake operating cable to the anchoring device. Y

The principal object of the invention is theY provision of new and improved means for securing the ends of a brake operating cablel to its .anchoring device.

vision of a new and improved anchoring device for cables and the like that is provided with means for locking the parts together in such a manner that any force exerted on the cable tends to more securely lock the anchor device to the cable.

A further object of the invention is the provision of new and improved means for.

securing the ends of a cable to their respective anchoring devices that is inexpensive to manufacture vand assemble and that is simplein construction and elcientlin use.

Other and further objects and advantages of the invention will appear from lthe fol-v lowing description taken in connection with the accompanying. drawing, in which p p Fig. 1 is a side elevation of aportion of a railway brake with parts broken away'and showing an anchor device for' one end of the brake operating'cable in :position thereon;

Fig. .2 is a side elevation of a portion of a brake operating mechanism showing an an-V Fig. 8 is a vertical section thereof; Y

Fig. 9 is a vertical section on line 9- 9 of Fig. 2, showing the parts in assembled relation and with parts broken away; and

Fig. 10 is a vertical section of the anchor device shown in Fig. 9 with the parts in partially assembledV relation., Y,

.. as is usual in such constructions. Another obj ect of the invention is the pro- Referring now to the drawing, thereference character 10 designates a railway brakev operating mechanism comprising a casing 11 in which a drum 12 forwinding up the brakel v operating cable 13 is journaled. The. drum 12v is rotated by-means of .the hand wheel 14:l operating through the pinion 15 and gear 16 The brake operated cable 13 is anchored to the gear 16 as at 17 and extends downwardly and about a pulley 18 at the lower portion of the car in the usual manner.

The means for anchoring the upper endof the cable 13 to the gear 16 comprises a plate 19 rigidly connected at one end o to the gear and having its opposite end spaced therefrom and provided with an opening through which a bolt 'or shaft 21 extends and oniwhich the anchor member 22 is'movably mounted. Y It is common practice to providethe endV of the cable with anenlargement which usually is tapered and is adapted to engage a corresponding tapered opening in the anchor member for connecting the end-of the cable thereto. kConsiderable. difficulty, is experienced inpreparing this enlarged. end because the metal forming the same must befirmly attached to each, individual-wire of. each strand otherwisey the enlargement Awill be pulledA loose Vfrom the rope by lthe repeated force applied to the cable in` setting the brakes. y f

- In forming-thisenlargement, it isv the present practiceto tie a band around the'end of the wire cable vto limit-its untwisting; untwist the end of the cable, remove the hempcore, and then brush out the cable end, that is, untwist the strands so that the individual wires will be separated. `The cable end has now the appearance of a brush. v

The brush portion is .then treated with a cleaning Vfluid such as a-weak acid,.and then tinned, after which the wires ofthe brushed end are 'brought together and a tie wire passed around the-same, preparatory to threading the end through the axial opening, in the socket or anchor member. After the tinned end has been threaded through the axial opening in the-socket the tie is removed and the-wires again expanded-in the socket or conical openthe opening in the socket or anchor member,

placing the Wedge in position, end then pouring the'molten metal in the socket over the end of thecable. This process will occupy about one-twelfth to one-fifteenth' of the time required by the old method of untwisting,

cleaning and tinningthe'individual Wires.-

In Figs. 1 and 3 is shown oneform of anchor member which is' by Way of example only.

In this form of construction the anchor member 22 comprises ahead portion23vand al shank or sleeve portion 24. f

The head portion 23 comprises a pair of

lside plates

25 and 26, see Fig. 6, spaced apart and connected'together at their central portion by a hub or anchor bar 27. These side plates and the hub may be cast integral as shown in Fig. 6. The anchor member or hub 27 is provided with a circumferential groove for receiving the bight or loop 20 of the'cable 13 as clearly shown in Figs. 3 and 4 of the drawing.

The anchor bar or hub 27 is providedwith an axial opening 28 through which the pin or bar 21 is adapted'to extend lfor connecting theanchor member to the gear 16'.

The 'shank member 24 is provided with an opening 29 extending dovv'nvvard'from the hub 27. IThis member is preferably elliptical in cross-section as shown in Fig. 5 and the maj or axisof this elliptical opening is sufficientto permit the two side portions of vvthe loop or bight'to be spread apart far enough for receiving a Wedge 31 as will presently appear. One end 'Wall 'of the opening 29 may be provided with an inclined'wedging surface as at 32 or engaging a corresponding inclined surface on the tapered or conical enlargement 33 secured to the end of` said cable. The Wedge member 31 is also provided with an inclined Wedging face /34 for engaging the corresponding inclinedsurfpace of the enlargement33 as clearly shown in Fig. 3 of the drawing. When the Wedge is in position the inclined 'surfaces 32and 34 cooperate: with the sides lof the sleeve 24 to form a conical socket into which the molten metal for forming the enlargement 23 is poured as 'Will presently appear.

In assembling the device the hemp core is removed, the end of the cable is inserted through the opening 29 and around the hub 27 and back through the opening 29, as shown in Fig. 4, the Wedge 31 is placed in position and the molten metal is poured into and around the end of the cable in the socket formed by the

inclined surfaces

32 and 34 and the sides of the sleeve 24. The inner end of the' Wedging member 31 Will come in Contact With the hub 27 and any further force applied to the cable 13 vvill cause the Wedging member 31 'to vbe forced 'by the conical enlargement 33 into frictional engagement with the cable. 13 as clearly shown in Fig. 3 of the dravving.` The bight or loop in the cable, together with the :trictional contact between the Wedge 31, cable 13 and the Wall of the opening 29 Will firmly grip the end of the cable: and securely anchor the same to said anchor member. j

If desired, the hub '27 may be provided lwith a yflat Jface 35 in alignment lWith the opening 29 whereby a sharp turn will be givenk the cable at theV point where it turns around said hub, thereby more firmly anchorin the cable to the anchor device.

ince only a small amount of the force exerted on the'cable after the same has been assembled as shown in Fig. 3 Will be transmitted to the enlargement 33 this enlargement may bereadily and. easily applied, thereby effecting a tremendous economy in time and labor.

In the modiied form of construction shown in Figs. 7 and 8 theanchor device 36 comprises a head 37 and a shank 38. rlhe head 37 comprises an offset plate 39 Vhaving an opening 41 therethrough, the? opening 41 being adapted to receive the pini or shaft 21 for attaching the device to the gear 16. 'The shankV portion 38 is provided Vvvith an opening 42 havingthe converging or; Wedgi'ng Walls 43 and 44 at'feach end-thereof for engagingthe sides of the loop 45 ofthe brake` operating .cable 13a.- Instead of extending the loop 45k of the cable'about'fa fixed shaft' or' hub as in the previousconstructiom it' is extended .about ay Wedge-shaped movable an:-` chor member46. Both the opening 42 andl the anchor member 46 converge outwardly whereby when the parts are assembled and force is applied to the cable 13a' both sides of the loop 45 Will be forced into at'rictionalV engagement With the .inclined side Walls'43 and 44 for lirmlysecu'ring the cableto'fthe anchoring device.

'The end of the cable 13a with an enlarged portionor bandas shown at 47 for preventing the untvvisting of the strands of the cable. y l K In Figs. 2, 9 and 10 is disclosed aconstruction for attaching the lower en'dt'of thebrake operating cable to the brake operating rod 48. A holding member 49 is attached to the outerend of the rod 48in anysuitable'manner as by being threaded into said member as shown in Fig. 9. l The holding member 49 may .be provided is in the form of a casing having an enlarged opening 5l in one side wall thereof through which the anchor member 52 may be inserted as will presently appear.

A slot 53 extends from the enlarged opening 5l partially across the end wall 54 through which the cable 13a is adapted to extend. 'Ihe end of the cable 13a is provided with an anchor member 52 which is in the form of a head 55 which is adapted to engage the recess within the casing 49. This head is provided with an opening 56 for receiving a loop 57 of the cable 13a as shown in Fig. 9.

One or both end walls of the opening 56 may be inclined to form a wedging surface. As shown, the end wall 58 is provided with the inclined surface 59 for this purpose. A wedging member 6l is provided for engaging within the loop 57 of the cable. This wedge is preferably though not necessarily provided with a peripheral groove 62 for receiving the two sides of the loop. The opening 56 and the wedge member 61 converge outwardly so that when the parts are in assembled relation any force applied to the cable will tend to wedge the sides of the loop against the end walls of the opening 56 for anchoring said cable.

In assembling the device, the cable 13a is passed through the opening 56 and is returned through said opening to form the loop 57. The wedge 61 is inserted in the loop and force is applied to the cable to force the wedge into said opening for binding the two sides of the loop of thecable against the walls of said opening for anchoring the cable to said device. After the cable has been anchored to the anchor member 52, said member is inserted in the casing through the opening 5l, the cable 13a passing into position through the slot 53.

In all forms of construction the parts are so arranged that the body portion of the cable will be at an angle to the adjacent portion of the loop, whereby the frictional resistance of the loop against the cooperating friction surface will be incr-eased.

I claim as my invention:

1. In combination, an anchor device provided with an opening extending longitudinally thereof, one of the walls of said opening being inclined, a brake operating cable having one of its ends looped and extending into said opening, a wedge member in said loop for wedging one side portion of said loop against said inclined wall, and a holder member for engaging said anchor device, said holder member being provided with means for connecting the same to a brake operating device.

2. In combination, an anchor device provided with an opening extending longitudinally thereof, one of the walls of said opening being inclined, a brake operating cable having one of its ends looped `and extending one end with an enlarged opening and with a slot extending from said opening partially4 across one end of said casing whereby said anchor may be inserted into said casing through said opening with said cable engaging said slot.

3. In combination, a holding element comprising a casing member, one side wall of said casing member being provided adjacent one end with an enlarged opening and with a slot extending from said opening partially across the opposite end of said casing member, an anchor member insertible through said opening into said casing member and slidable therein, said member having an opening therethrough parallel with said slot, one of the defining walls of said opening being inclined to the longitudinal axis of said casing member, a cable extending through said last named opening and means engaging said cable and inclined wall for anchoring said cable to said member, said cable extending through said slot.

In testimony whereof I aii'ix my signature.

PERCY B. CAMP.