US2323200A - Railway brake - Google Patents

Description

June 29, 1943. P. B. CAMP ETAL RA ILWAY BRAKE Filed Aug. 22', 1941 2 Sheets-Sheet l INVENTORS ATTORNEYS W m 7 WM 7 m 0 M z a m m fl m 1. f m and a a v y g 9 2 y 5 a v w June29, 1943. B. CAMP ETAL 2323,200

RAILWAY BRAKE Filed Aug. 22, 1941 2 Sheets-Sheet 2 I IN VENT ORS .Ber

Patented June 29, 1943 RAILWAY BRAKE Percy B. Camp,

Maywood, and Herbert E.

Bartsch, Chicago, Ill., assignors to Universal Railway Devices Company, a corporation of Delaware Application August 22, 1941, Serial No. 407,846

6 Claims.

This invention relates to brakes for railway cars and more particularly to a novel casing or housing for the brake operating mechanism.

One of the objects of the invention is the provision of a new and improved sectional housing for a brake operating mechanism having one section thereof shaped or stamped from sheet metal.

Another object of the invention is the provision of a new and improved brake sectional housing in which the housing for the brake operating gearing or mechanism is composed of twosections, a front section on which the mechanism is so mounted that it will remain in assembled relation therein when the said front section is removed, and the other is a plate so stamped from sheet metal that it will be adequately reinforced for supporting the entire assembly.

A further object of the invention is the provision of a casing or housing for enclosing a brake operating gearing so constructed as to be in sections and with interlocking parts whereby one section and the gearing assembled therein will be supported directly through such connection from the other or back section.

A still further object of the invention is the provision of a sectional housing for a brake operating gearing that is simple in construction, inexpensive to manufacture and that is efficient in use. 7

Other and further objects and advantages of the invention will be apparent from the following description, taken in connection with the accompanying drawings in which Fig. 1 is a front elevation of the brake device showing the same applied to the end wall of a car, Wllth parts in section and parts broken away;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a vertical section on the line 3-3 of Fig. 1;

Fig. 4 is a front elevation of the rear section or brake plate of the brake housing, with the front casing removed;

Fig. 5 is a section on the line 55 of Fig. 1;

Fig. 6 is a vertical section of a back plate showing a modified form of bearings for the brake drum and brake shaft; and

Fig. '7 shows a further modified form of bearing and means for securing the same in position in the back plate, on a somewhat enlarged scale.

In the construction and use of railway brakes, it is desirable that the casing or housing for enclosing the brake operating gearing or mechanism be so constructed that there is a front section within which the gearing may be permanently assembled and removed with the gearing in assembled relation, and a back plate section stamped from sheet metal that may be permanently attached to the car. It is also desirable that this casing be so constructed that it may be stamped from sheet metal with a minimum waste of material and when com pleted be strong and durable.

Referring now to the drawings, the reference character It designates the vertical wall of a railway car such as the end wall to which the brake housing ll isadapted to be permanently attached as by means of the rivets l2 and I3, Figs. 1 and 2. i

The brake housing ll comprises what for convenience of description will be termed a front or outer section or casing M which may be cast and a stamped rear or inner section or attach ing plate I5, see Fig. 3. The front section or casing M comprises a body portion l6 having a flange l'l extending along its marginal top and side edges. Within this casing, the brake operating gears or mechanism is mounted, as will presently appear.

The rear section I5 of the brake housing is stamped from sheet metal and comprises a body portion i8, Fig. 4, having an upward extension or head portion 19, laterally extending attaching members or ears 2| and 22 and downwardly extending projections or'arms 23 and 24. In order to reinforce the plate member and, at the same time, provide means for attaching the plate member to the car and the front section to the plate, the plate is provided with portions offset inwardly or reawardly and other portions offset outwardly or forwardly. As shown, the head portion 49 is provided with a depression or'forwardly offset portion 25, Figs. 3, 4 and 6, which is provided with an aperture 26 for receiving the shaft of the pawl operating mechanism, as will presently appear. The attaching members or ears 2| and 22 have their outer ends offset rearwardly and are attached to thecar wall ID. The upper or head portion l9 has for-] wardly offset portions 2'l and 28, Fig. 2, adjacent each side edge thereof just above the attaching ears 2| and 22. The offsets are sufiicient to provide clearances for the heads of bolts 29 and 3| which are employed for connecting the sections of the housing ll together at their upper ends.-

Suitable means are provided for interlocking the sections together so that the front section is supported from the rear section by this interlocking connection rather than by the bolts or other means employed for securing the sections together. As shown, the flange IT, at opposite sides of the front section, is provided with notches or cut-out portions 32 and 33, Figs. 1 and 2, through which the ears 2! and 22 extend and are interlocked therewith. The flange IT is turned outwardly at its lower ends as at 34 and 35, see Figs. 1 and 5, for engaging over shoulders 36 and 31 formed on the upper ends of the projections or arm portions 23 and 24, Fig. 4. The

arm portions 2-3 and 24 are offset forwardly ad- J'acent to their lateral edges just above the lower ends thereof to provide clearance for heads of bolts 38 and 39, Figs. 4 and 5, which detachably connect the front section of the housing to the back plate or rear section thereof. The shoulders 36 and 3'! engaging beneath the flanges 34 and 35 constitute supporting means for assisting in supporting the front section of the housing from the rear section or plate E5. The bolts 38 and 39 extend through feet 4! and 42 on the housing M which extend on downwardly beneath the flanges 34 and 35.

It will thus be seen that the casing or front section l4 of the housing is detachably connected to the rear section or plate l by means of the bolts 29, 3|, 38 and 39. By removing the nuts on these bolts, the front section of the housing may be detached from the rear section, together with the brake operating mechanism, as will now be described.

The brake operating mechanism and the manner of mounting the same within the casing i I is substantially the same as that disclosed in the copending application of Camp and Bartsch, Serial No. 227,328, except for certain changes in the mounting of the brake drum. The brake drum 43 is hollow at its forward end and is provided with a bearing engaging a journal 44 in the form of a boss extending rearwardly or inwardly from the front wall of the casing I4. The rear or inner end of the drum is in the form of a journal 45 that is adapted to engage a bearing 46 secured in an opening 49 in the plate or rear section of the housing, see Fig. 3. The bearing 46 is in the form of a sleeve member extending through the opening and is upset at each side of the plate so as to rigidly connect the same to the plate. The drum is provided with means for holding the same assembled to the section I4 and this is accomplished by a stud 47 that extends through a partition 48 within the drum 43, as shown more clearly in Fig. 3 of the drawings. The stud 41 is threaded into the boss 44 and is provided at its rear or inner end with a screw threaded portion for receiving a nut 49 for holding the parts in assembled relation. The nut 49 is seated in a recess in the journal 45.

It will thus be seen that when the casing I4 is removed from the inner section i 5 of the housing, that the drum 43 will be held in assembled relation on the front section. The stud 41 is secured in the hub 44 but does not extend entirely through the hub. A lubricating passage 5| extends through the casing l4 and longitudinally of the stud 41 and then laterally of the stud to the hollow in the drum for conducting a lubricant into the hollow drum 43 for lubricating the bearings. The passage is closed by a conventional spring pressed ball 52 at itsforward end, as shown in Fig. 3.

Since the remainder of the brake operating mechanism within the housing H is the same as that disclosed in the above mentioned copending application, except for minor details, it is not thought necessary to give more than the following general description of the remaining elements of this brake operating mechanism.

The mechanism is so mounted in the outer casing I4 that it will remain in assembled relation in the casing when the latter is removed.

The drum 43 is provided with a spur gear 53 which is adapted to engage a pinion 54 on the inner or rear end of the brake operating shaft 55. The drum 43 is provided with suitable means 56 to which the brake operating cable or chain 51 is attached.

The brake shaft 55 is provided at its forward end with a brake wheel 58 of the usual or any well known construction and attached to the shaft in the conventional manner. The shaft has a journal 59 which engages a bearing 6| secured in the body portion of the casing II. This bearing is similar to the bearing 49 and is a sleeve extending through an opening in the casing and having its ends upset for rigidly securing the same in position. The inner or rear end of the shaft 55 is in the form of a journal 62 which engages a bearing 63 in the back plate or rear section of the housing. The journal 62 is but slightly smaller in diameter than the pinion 54 so as to reinforce the teeth of the pinion. This bearing is similar to the bearing 6| and may be of any suitable material such as brass or the like. The shaft 55 has rigidly mounted thereon a ratchet wheel 94 which is adapted to be engaged by a slidable pawl 65, Fig. 1, slidably mounted on and held in position by an L-shaped guide and support 69 integral with the side and front walls of the casing I4. The pawl is operated by a finger 66 engaging a slot 31 in the pawl 65. The finger 66 is rigid with a pivoted shaft 68 which is journaled at its forward end in the depression 10 of the casing 14, Fig. 3, and at its rear end in the opening 25 in the back plate 5. The shaft 68 is rotated in a position to lower the pawl 65 by a projection '69 rigidly mounted on a shaft H and which is adapted to engage beneath an extension 12 on the shaft 68 for rotating the finger 68 for lowering the pawl 65 when the shaft 'H is turned to the position shown in Fig. l. The shaft H is journaled in a boss on the casing 14, Fig. 3. The shaft H is provided with an arm 12 extending to the outer side of the casing for turning the shaft H. A stop or locking member 73 is loosely mounted on the hub 80, Fig. 3, and is provided with a shoulder 74, Fig. 1, which is adapted to be engaged by the projection 69 when the same is turned to the position shown in Fig. 1 for moving the locking member 13 into engagement with the pawl 65 for locking the pawl 65 from rotation whereby when the brakes are applied, the pawl will function as a holding pawl for permitting the ratchet wheel to rotate in one direction but will lock it from moving in the opposite direction.

The lever 12 may be swung over to the right in Fig. 1 to a position in which its center of gravity will be to the right of the shaft H. In that position, projection 69 on the shaft H will have engaged the shoulder Mo on the locking member 73 and rotated the same out of engagement with the pawl 65 so that the pawl is free to move outwardly and upwardly for permitting the ratchet 64 to rotate in reverse for releasing the brakes.

The construction shown in Fig. 6 differs from that just described in that the bearings for the brake drum and brake staff are modified. In this figure, a cup member 15 is secured to an opening 40a in the back plate l by a press fit, the inner or forward end of the cup member 15 being upset as shown. The sleeve bearing 16 is secured in the cup member by a press fit. The bearing 1'! for the brake shaft is made and secured in position in the same manner as just described and since it is substantially a duplicate of that bearing, it is not necessary to repeat the description.

In Fig. 7 is shown a further modified form of construction for bearings for drum and brake shaft. In this form of construction, the opening 40b in the back plate [50. is flared or beveled slightly toward one end as shown somewhat exaggerated at 18. In other words, the openings through the plate each have a larger diameter at one end than at the other end. A cup-shaped bearing 15a is secured in the opening 40b by pressure that upsets the bearing into the recess formed by flaring the opening and its opposite end is upset around the opening as shown at 8|. The bearing is thus held firmly within the open- It is thought from the foregoing, taken in connection with the accompanying drawings, that the construction and operation of our device will be apparent to those skilled in the art and that changes in size, shape, proportion and detail may be made without departing from the spirit and scope of the appended claims.

We claim as our invention:

1. In a housing for a brake operating gearing for a railway car, an outer section having an inwardly extending flange along its side and top edges to form a casing member, said flange having notches in the intermediate portion of the flange extending along the side edges of the section, brake operating mechanism mounted within said casing, an inner section comprising a plate stamped from sheet metal and having an upper portion offset outwardly and engaging within the upper portion of said flange, said plate having attaching ears extending through said notches and interlocked therewith for assisting in supporting said casing member, and means for detachably securing said from section to said rear section.

2. In a housing for a brake operating mechanism, a front section, a rear section, interlocking means including attaching ears on one section engaging in notches on the other section for supporting the front section from the rear section, means for detachably connecting said sections together, and means for attaching said rear section to a railway car.

3. In a brake for railway cars and the like, a brake housing comprising a front section and a back plate section stamped from sheet metal, said plate having attaching projections offset rearwardly from its intermediate portion anddepending attaching arms, shoulders above said arms, said arms having their outer ends offset rearwardly from said shoulders, said front section comprising a casing having rearwardly extending side flanges, the lower portions of said flanges extending outwardly over said shoulders and in engagement therewith, and means for securing said back plate to said car, and means for securing said casing to said plate.

4. In a brake for vehicles, a housing comprising a back plate and a front casing interlocked with the back plate, means for attaching said housing to a vehicle, means for holding said plate and casing in interlocked relation, brake operating mechanism within said casing, said mechanism comprising a brake drum having a bearing on its front end and a journal on its rear end, a journal on said casing and a bearing on said plate for engaging said first-named bearing and journal, respectievly, a stud extending axially rearwardly from the journal on said casing through said winding drum, and. means for holding said drum in assembled position within said casing when the latter is removed from said plate.

5. In a railway brake, a back plate stamped from sheet metal and comprising a body section having a head section extending upwardly therefrom, said head section having its central portion ofiset forwardly and provided with an opening .therethrough, said body section having laterally extending apertured attaching projections ofiset rearwardly, said body having apertured arms extending downwardly and laterally, each arm having a portion of its lateral outer edge ofiset forwardly and apertured, and said body having its intermediate portion provided with brake supporting shoulders in a horizontal plane above said arms.

6. In a housing for a railway brake, a=plate comprising a body portion, a head extending upwardly from said body portion, said head having its central portion offset forwardly and provided with an aperture, the upper edge of the head portion being angular, a pair of arms extending downwardly from said body portion and spaced apart, the space between said arms being substantially the same as the contour of the upper portion of said head, said arms having apertured central portions offset forwardly, said arms having shoulders above the same and integral therewith for supporting the remainder of said housing and attaching ears between said head and arms extending laterally from said body portion, said ears being apertured for receiving means for securing said plateto a railway car.

PERCY B. CAMP. HERBERT E. BARTSCH.

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