US1681056A

US1681056A - Regulator for brake rigging

Info

Publication number: US1681056A
Application number: US230348A
Authority: US
Inventors: William H Sauvage
Original assignee: ROYAL RAILWAY IMPROVEMENTS COR
Current assignee: ROYAL RAILWAY IMPROVEMENTS COR; ROYAL RAILWAY IMPROVEMENTS Corp
Priority date: 1927-11-01
Filing date: 1927-11-01
Publication date: 1928-08-14
Anticipated expiration: 1945-08-14

Description

Aug. 14, 1928.

' W. H. SAUVAGE REGULATOR FOR BRAKE RIGGING.

Filed Nov. 1, 1927 A TTORNE Y.

a ll

racemes ne 1d. i928.

UNITE STATES PATENT OFFIGE.

WILLIAM H. SAUVAGE, on \NEW YORK, N. 2., ASSIGNOR. BY MESNE AS SIGNMEfi TS, To ROYAL RAILWAY IMPROVEMENTS CORPORATION, or NEW YORK, N. r, .e.

CORPORATION OF DELAWARE.

REGULATOR FOR BRAKE RIqG-ING.

Application filed November 1,- 1927.

This invention relates to regulators for foundation brake rigging on railway cars and will be hereinafter described'more particularly with relation to its application to 5 the cylinder levers located near the center of the car altho of course it is to be understood that without material modification, the regulating means is also applicable to other points ofsupport for the various levers of the foundation brake rigging. As herein described, however, the regulator is an improvement over the type shown in my pending application, Serial No. 195,713, filed June 1, 1927. 4 In certain types of car rigging, it is desired to have a manually actuated regulating means which may be substantially instan- .taneously operated to adjust all of the brakes used in the entirecar with regard to apredetermined relation as to proper piston travel and brake shoe clearance'at all points- It is accordingly one of the main objects of this invention to provide a mechanism of this general character. which will permit a rapid and accurate adjustment of the brakes and positively hold the parts in ad usted position until it is necessary to further absorb the travel of thebrake shoes in excess of desired brake shoe clearance.

' A further object of the present invention is to provide a regulator of the above general character which may be easily and quickly applied to brake rigging now in general use without needless waste. substitution of parts, or other like objections.

Other objects will be in part obvious from the annexed drawings and in part hereinafter indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in the features of construction, combination of parts and in the unique relation of the members and in the relative proportioning and disposition thereof, all as more completely outlined herein.

To enable others skilled in the art to fully comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form of thein- Serial No. 230,348.

vention have been annexed as part of this CllSClOilllB and in such drawings, like charg ters 01 reference denote corresponding parts throughout all of the-views, in which Fig. 1 is an elevation, partly in section,

showing such parts. of the complete apparatus as is necessary to understand the invention;

2 is a general plan view of the brake rigging and associated regulator; and

Fig. 3 is a detail sectional View of the take up mechanism. 7 V

Referring now to the drawings and par ticularly to Fig. 1, the numeral 4 indicates the usual brake cylinder provided with a p ston 5, piston rod 6, having at its end a bifurcated jaw 7 adapted to receive. one end of the live cylinder lever. The opposite end of the cylinder is preferably provided with a supporting lug S to which the regulator is adapted to be secured as by means of bolts 10. The regulator comprises an elongated housing 11 having an enlarged portion 12 and a closed cylindrical chamber 13 for shdably receiving a threaded take up rod 14 as it progressively moves towards the left. Thus the closed chamber 13 protects the rod 14 from dirt and snow. This take up rod 14 is provided at one end with a bifurcated aw member 15 adapted to receive one end of the dead cylinder lever 16. The jaws of the member 15 are provided with anelongated slot 17 of a length proportional to brake shoe clearance, along which a pin 18 passing thru lever 16 is adapted to have a free lost motion movement during the regulating operation. The lever 16 is extended to form a handle 20 or other suitable actuating means whereby the supported end of the lever 16 may be conveniently and manually moved towards the left. The threads on rod 14 are of high pitch and cooperate with handle 24 extending from the pawl and pulling outwardly. A plug 19 is threaded into an aperture in housing 11 to permit of ready insertion or removal of pin 18 thru lever 16.

In operation, the regulators work as follows. The operator grasps the handle 20 and moves the lever 16 freely along the slot 17 towards the left. This movement reacts thru the various parts of the foundation brake rigging which is of well known standard construction, thereby bringing the brake shoes into engagement with the peripheries of the wheels. .If the same are not in properly adjusted position with normal predetermined clearance, or for instance, where excess travel exists at any point in the brake rigging,'the pin on 18 engaging the left end of the slot 17 causes a relative longitudinal movement of the threaded adjusting rod 14 with respect to the ratchet wheel 22. By reason of the high pitch engagement therebetween, the ratchet wheel rotates with respect to the pawl 23 an amount equal to the excess travel, the pawl then holding the ratchet wheel against return rotation. IVhen all of the excess movement has been taken up. the handle 20 is released and may be moved back to its normal or adjusted position. assumed to be the position shown in Fig. .1, for the first application of the brakes. The provision of the slot 17 is important in this relation inasmuch as positive brake shoe clearance is absolutely assured prior to application of the brakes.

The lever 16 and associated cylinder lever extend thru the slottedguide or brackets 25, which act as a stop therefor, whereby the brakes may be adjusted at the truck dead levers or bottom rod connection at both ends of the car without disturbing the desired angularity of the respective brake levers.

From the above, it will be clear that the present invention contemplates a simple and practical regulator for foundation brake rigging which may be instantaneously manually actuated when desired with the definite assurance that all excess movement in the rigging will be absolutely taken up over and above proper brake shoe clearance at the various points of brake application. thus providing uniform predctern'iined piston travel.

lVithout further analysis, the foregoing will so fully re eal the gist of this invention that others can by applying current knowledge readily adapt it for various applications without omitting certain features that, from the standpoint of. the prior art. fairly constitute essential characteristics of the generic or specific aspects of this invention. and therefore such adaptations should and are intended to be comprehended within the meaning and range otequivalency of the following claims. I

I claim:

1. In a manually actuated regulator of the character described, in combination, a lever, one end of which is adapted to be supported by the regulator, said regulator including a housing, a high pitch threaded rod in said housing having a lost motion connection with the lever, and pawl and ratchet mechanism associated with said threaded rod for absorbing movement of the lever in excess of the lost motion.

2. In a manually actuated regulator of the character described, in combination, a lever, one end of which occupies a normally fixed position, said regulator supporting the other end of said lever and comprising a rod having a lost motion connection with the lever, said lost motion being proportional to total brake shoc clearance, a ratchet nut having a threaded engagement with said rod, and a pawl cooperating with said ratchet nut and adapted to hold the same against reverse rotation after excess movement v over and above the lost motion takes place.

In a manually actuated regulator of the character described, in combination, a lever, one end of which occupies a relatively fixed position, said regulator supporting the other end of said lever, and comprising a housing closed at one end, a threaded rod slidably mounted in said housing, one end of said rod being provided with a slot of a length proportional to total brake shoe clearance, the other end of said rod extending into the closed end of said housing, said lever being operatively connected with said rod, and permitted a free movement relative thereto by said slot, a ratchet nut mounted in said housing and in threaded engagement with said rod, and a spring urged pawl permitting frce rotation of said wheel in one direction when absorbing excess travel of the brakes.

4-. In combination with the foundation brake rigging including brake levers and limiting stop means therefor. a regulator in which one end of one of said levers is supported, said regulator including a housing, a high pitch threaded rod slidable in said housing and having a lost motion connection with the lever, and pawl and ratchet mechanism associated with said threaded rod for absorbing a regulatingmovement of the lever in excess of the lost motion.

In combination with the foundation brake rigging including brake levers and limiting stop means therefor. a regulator,

one end of one of said levers being supported in said regulator and the other end occupying a normally fixed position, said regulator comprising a rod having a lost motion connection with the lever. said lost motion being proportional to total brake shoe clearance, a ratchet nut having a threaded engagement with said rod, and a pawl cooperating with said ratchet nut and adapted to hold the same against rotation in one direction when excess movement over and above the lost motion takes place.

6 In combination with the foundation brake rigging including brake levers and limiting stop means therefor, a regulator, one end of one of said levers being supported in said regulator and the other end occupying a normally fixed position, said regulator comprising a housing closed at one end, a threaded rod slidab-ly mounted in said housing, one end of said rod being provided with a slot of a length proportional to total brake shoe clearance, the other end of said rod eX- tending into theclosed end of said housing,

said lever being operatively connected with said rod, and permitted movement relative thereto by said slot, a ratchet nut mounted in said housing and in threaded engage ment with said rod, and a spring urged pawl 20 permitting free rotation of said nut in one direction when absorbing excess travel of the brakes.

7. In combination with the foundation brake rigging including brake levers and limiting stop means therefor, a regulator in which one end of one of said levers is supported, said regulator including a housing, a high pitch threaded rod slidab'le in said housing and having a lost motion connection with the lever, and pawl and ratchet mechanism associated with said threaded rod for absorbing a regulating movement of the lever in excess of the lost motion, and means for disconnecting said pawl and ratchet whereby said rod may be restored to full release position as when applying new brake shoes.

Signed at New York, New York, this 11th-