US1782589A - Brake cylinder - Google Patents

Description

Nov. 25, 1930. H. A. .WAHLERT BRAKE CYLINDER Filed Sept. 3, 1 929 'Figl INV ENTOR HENRY A. WAHLERT BY ATT drical bushing in a cylindrical portion-ofthe bedframe to form the body ofthe brakecyL inder, After the bushing was thus mounted,

Patented Nov. 25, 1930 A sermon-Arron or missotmr i BRAKE cY mnnn i lllpplicatioii filed September 3, 1929. Serial ii 389,915.- 1

This invention relates to the mounting of brake cylinder devices to the bed frame of railway locomotives; i Heretoforeyin building up a brakecylinder device in the bed framefof the locomotive,

it has been the practice to tightly fit a cylinthe usual piston and piston rod and other parts of the device were inserted in the bushing and the pressure head andnon-pressure E brake cylinder? has been found fobj ectionable head drawn tight against .the opposite ends of the bushing by means of nutshavmg screwthreaded connections with studs anchored in the bed frame, This methodof formingthe inj that it is diflicultpand requires consider able time and labor, tofit thebrake cylinder bushing in thebed frame and that it is dif-T. iicult to obtain a suitable air tight bushmg;

The principal object ofmy invention is to provide a brake cylinder which may be easily assembled with the locomotivebed frame and which will be free from the above mentioned objectionable features.

Other objects and advantages will appear j in the following more detailed description of the invention;

In the accompanying drawing, Figure 1 i a plan view of a portion of a locomotive bed frame embodying my improved brake cylinder mounting; Fig. 2.,is a side elevational view of the same; Fig. 3 is a cross sectional view 011- theline 3-3 of Fig. 2; Fig, 4 is alienlarged. detail bottom plan view of a port on of the frame, the brake 'cyllnder parts being removed; Fig. 5 is an enlarged fragmentary sectional view showing a modification of the as means for securing the pressure head of the l brake cylinder to th body thereof and for tive, and Fig. 6 is a like view illustrating a securing both to the bed frame of a loc0momodification" of the means for securing the non-pressure head of the brake cylinder to the bed frame.

As shown in the drawing, the locomotive bed frame may comprise a single integral casting having, at desired locations through- 1 out its length, integral vertically disposed anhaving openends, which. recess is adapted to receive the bodycportion 2 of asbrake cylinder device. i

The body-portion'l is cylindrical in form andYis of such adiameter that it willhave a slipfit with the wall 1 soi'that it maybe in-i serted inits receiving recess and properly po- A ssierr oarro THE AMERIC RAKEY nular walls 1,each of which defines a recess sitioned without, having to drive .it i into the bed frame.-

The upper end ofthelportion is provided with an outwardly directed horizontallydisposed annular flange 3 having a plurality of openings formed'therein through which studs: 4, having screw-threaded connection with the Wall 1 of thefbed frame, extend when the por tion 2fisjinits proper positionin the bed frame, WVhen the'portion 2 is positioned,

the flange 3engagesftheupper end of the" wall 1 and prevents undue downward move m'ent of theportion relative to the bedjframe. The brakecylinderdevice also comprises a pressure head5 having a plurality of openings through which the studs t also extend. This head'isclamped tight against thepoi tion 2 by nuts 6 havingscrew-threaded 0011- nection with the upper ends of the studs 4. Theqbrake cylinderydevice further comprises anon-pressure head 7 having afplurality of openings through which bolts 8, an-

chored in the wall 1,extend, tl1e head being clamped tightlyftothe portion 2 by nuts 9 having jserew threaded connections withzthe lowerendsof the bolts 8. 1 1 f Q;

In Fig: 3 of the drawing, the upper ends of the bolts-8 are shown as being of T-shape and arereceived within a recess lOformed in the wall 1 Opening intothis recess and formed in the-bedframearenotches or slots 17 having open'inner ends, which slots are adapted to receive the shanks oftheibolts Sand are portion 2 is positioned,the bolts 8 are positioned asshown, sothat whenthe portion'2 is mounted in the frame, the bolts will be pre vented :from movingout of engagement with a the bedlframep f i v v As shown in Fig. 5 of the drawing the pressurehead maybe clamped in place through each of such a width that thejheads of the bolts cannotpasstherethrough. Before the the medium of bolts 8 and nuts 9 instead of through the medium of the studs l and nuts 6.

Further, as shown in Fig. 6, the non-pres sure head may be clamped in place through the medium of studs t and nuts 6 instead of through the medium of the bolts 8 andnuts 9.

Contained in the brake cylinder is the usual piston 11 having a piston rod 12 attached thereto, the lower endportion of the rod extending through a central opening in the nonpressure head and being operatively connected to a brake lever 13 through the medium of a push rod let. Also contained in the brake cylinder and interposed between the piston 11 and the non-pressure head 7 is the usual release spring 15. Attached to the piston 11 and clamped between the portion 2 and the non-pressure head 7 and the cylindrical portion 2 is a filter device 16 for extracting foreign matter from the air which enters the nonpressure side of the brake cylinder through the space between the piston rod and the nonpressure head.

From the foregoing description it will be seen that the several parts of the brake cylinder device may be made and fitted together by a manufacturer of such devices, then shipped to the user, and finally built into a locomotive bed frame or the like. Since the manufacturer can supply allof the parts of the brake cylinder device they will not have to be altered in mounting them on the bed frame, thus rendering it possible to, assemble the brake cylinder device with the bed frame in less time and with less labor and with more accuracy than has heretofore been possible.

lVhile one illustrative embodiment of the invention has been described in detail, it is not my intention to limit its scope to that embodiment or otherwise than by the terms of the ap pendedclaims.

Having now described my invention, what Iclaim as new and desire to secure by Letters Patent, is:

1. The combination with a vehicle frame having an opening therein, of a brake cylinder device comprising a cylindrical portion insertable in said opening, a flange on said cylindrical portion in supporting engagement with said frame, a pressure head clamped against said flange, and a non-pressure head clamped against said cylindrical portion.

2. The combination with a vehicle frame having an opening therein, of a brake cylinder device comprising a cylindrical portion insertible in said opening, a flange on said cylindrical portion in supporting engagement with said frame, a pressure head at one end of the cylindrical portion, means anchored in said frame for securing said cylindrical portion to said frame and .for clamping said head against said flange, a non-pressure head at the other end of the cylindrical portion, and means anchored in said frame for clamping the non-pressure'head against said cylindrical portion.

3. The combination with a vehicle frame of an annular wall integral with said frame defining a brake cylinder receiving recess, a brake cylinder device comprising a cylindrical portion insertable in the recess defined by said wall, a flange on said cylindrical portion overlapping and engaging the upper end of said wall for supporting said cylindrical portion on said frame, a pressure head at one end of the cylindrical portion, means anchored in said wall for clamping said flange to said wall and the pressure head to the flange, a non-pressure head at the other end of the cylindrical portion, and means anchored in said wall for clamping saidnon-pressure head against said cylindrical portion.

4. The combination with a vehicle frame, of an annular wall integral with said frame defining a brake cylinder receiving recess, a brake cylinder device comprising a cylindrical portion fitting loosely in the recess defined by said wall, a flange on said cylindrical portion engaging the upper end of said wall and supporting the cylindrical portion on the frame, a pressure head, bolts anchored in said wall extending through said flange and head, nuts on said bolts for clamping said head against said flange, a non-pressure head, and means anchored in said wall for securing said non-pressure head to said cylindrical portion.

In testimony whereof I have hereunto set my hand this twenty-sixth day of August, 1929.

HENRY A. VVAHLERT.

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