US1420150A

US1420150A - Hand brake

Info

Publication number: US1420150A
Application number: US296555A
Authority: US
Inventors: William H Sauvage
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-05-12
Filing date: 1919-05-12
Publication date: 1922-06-20
Anticipated expiration: 1939-06-20

Description

2 S`HEES-SHEET l.

Patented June @9 i922.

l w. H. SAUVAGE.

HAND BRAKE.

APPLIQATION FILED MAY T2, 1919K Jil 2 SHEETS-SHEET 2.

atemd June 2(1), i922.,

HAND BRAKE.

W. H. SAUVAGE.

E@ MQ /MM @a .W www 2 APPLICATION FILED MAY l2, i919.y

LAQJ.

T orrice.

WILLIAM H. SAUVAGE, OF FLUSHING, NEW YORK.

HM D BRAKE.

Median.

To all 'whom t may concern Be it known that I, WILLIAM H. SAUVAGE, a citizen of the United States of America, residing at Flushing, Long Island, in the county of Queens and State of New York, have invented certain new and useful Improvements in Hand Brakes, of which the following is a specification.

This invention relates to hand brakes, and more particularly to hand brakes adapted for use on railway freight cars, although. of course, it is to be understood that without material modification. it is applicable to passenger cars, street cars and the like.

@ne of the objects of the present invention is to provide a simple and practical hand brake capable of easily and quickly applying the brakes. Another object is to provide a hand brake of the above character in which the slack in the brake rigging may be almost linstantaneously taken up, after which the tightening of the brakes, to exert maximum pressure, may be done with a minimum amount of time or effort'. Another object is to provide a hand brake mechanism having relatively few parts which may be easily and inexpensively manufactured as well as applied to the brake rigging now in general use without material modification. A further object is to provide a brake mechanism of the last above character which will provide a quick take up or quick release accompanied by high power and ease of operation.

Other objects will be in part obvious from the annexed drawings and in part 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 relations of the members and in the relative proportioning and disposition thereof, all as more completely outlined herein.

To enable others skilled in the art so fully to 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 forni have been annexed as a part of this disclosure`r and insuch drawings, like characters of reference denote corresponding parts throughout all the views, in which Figure 1 is a vertical longitudinal sectional view showing one form of the complete mechanism;

Specication of Letters Patent.

Patented J une 2d, 1922.

Application led May 12, 1919. Serial No. 296,555.

Figures 2 and 3 are elevational views partly in section showing modifications;

Figure 4 is a cross sectional view taken on the line it- 4.- of Fig. l;

Figure 5 is a sectional view on line 5 5 Fig. 2;

Figure 6 is a detail of the hand wheel.

Referring now to the drawing in detail and particularly Fig. 1, 5 denotes the end of a freight car of standard construction for example which may be provided with a platform upon which the brakeman stands while applying the brakes. The brake mechanism as hereln shown comprises a supporting member or bracket 6 having a tubular body portion 7 preferably formed integrally therewith. rThrough this body portion passes the brake operating mechanism which includes a tubular member S provided at its lower end with a threaded cap 10 through which passes a square pull rod 11, the lower end of which is provided with an eye 12, Fig. 2, adapted to be connected with a brake mechanism in any desired manner as by means of a chain or other brake connection 13. The upper end of this member 8 is also provided with a threaded cap 14 adapted normally to rest on the upper part of the supporting member 7. This cap takes over a flange 15 integrally formed on a member 16, the upper end of which is provided with a hand operated wheel 17, Fig. 6, while the lower part is threaded at 18 to engage threads 20 of the pull rod 11. From this it will be seen on rotation of the hand wheel the rod 11 is pulled upwardly in the tubular portion ot' the threaded member 16 thereby exerting a pull upon the brake rigging.

Tt will be noted that the lower part of the casting 6 is provided with a lip 22 as shown in Fig. 1 adapted to hold one end of a rectangular dog member 23, Fig. 4, which is provided in its central part with an opening 24 through which the tubular member 8 1s adapted to pass. The opening 24 is provided with hardened or tempered edges and is slightly larger than the member 8 whereby when it assumes a. canted position as shown in the drawing the edges will bite or grip into the tubular member 8 and prevent a relative downward movement thereof, yet permit a tree and rapid upward movement when the hand wheel 17 is grasped and raised.

ln order to prevent relative rotation of the intervening member 8 with respect to the `thereby carrying the tubular member 8 and v all of the associated parts upwards with respect to the casting G, thus rapidly taking up all the loose slack in the brake rigging.

llVhen this slack has been taken up, he of course stops the upward pull and the brake mechanism is held rigidly in its raised position by means of. the dog 23. He then turns the hand wheel 17 causing the threaded pull rod 11 to move relatively upwardly, thereby exerting high power upon the brake rigging with a minimum effort and time. It is unnecessary to use any bar, club or the like, in connection with the hand wheel for the screw or other power multiplying connection will easily give all the power desired. .For that reason it is preferred to use a wheel as shown in Fig. 6 as too great power would break the chain.

Then it is desired to release the brakes he reverses the rotation of the hand wheel 17, thereby relieving the pressure to some extent after which lie raises up the outer or free end of the dog 23 which causes the brake operating mechanism to drop downwardly to the position shown in Fig. 1.

In Fig. 2 there is shown a slight modification wherein, instead oi, using a dog Q3. Fig. 1, a pawl and ratchet mechanism is employed, that is the outer surface of the tubular intervening member 8 is provided with a series of teeth 30 adapted to be engaged by gravity actuating pawl 31 pivoted at 32 to the casting 6 and prevented from relative outward movement by a pin or other suitable stop 33. A releasing lug 34 projects upwardly at one side whereby the same may be easily moved outwardly when it is desired to release the brakes. ,Y

The operation of this form is substantially the same as that above described but is not so desirable for the reason that the entire or exact amountof slack cannot always be taken up by the single lifting operation. lf, forexample, the slack amounted to two and one-half teeth of the rack only two teeth could be taken up by this pawl and ratchet mechanism on lifting which would necessitate one or two additional turns of the hand wheel to take up the remaining amount of slack. lVith the dog mechanism as shown in Fig. 1 all of this slack may be taken up by a simple lifting operation.

The modification shown in Fig. 3 is substantially the sameas that shown in Fig. 1 except that the tubular member rcorrei sponding to the member 16 in Fig. 1 is provided with threads 36 opposite in inclination to those threads onthe'rod 11. The Harige 15, Fig. 1, is also omitted. It will thus be seen that on lifting the hand wheel 17 the rod 35, together with the associated parts, including the pull rod 11, is raised bodily with respect to the holding dog 23, thereby to take up all of the excess slack. 'After this slack is taken up the hand wheel 17 is rotated, thereby to cause a relative upward movement of the tubular rod or member 35 and a simultaneously upward movement of the rod 11 with respect to this tubular member 35.

In this manner a much greater power is obtained and also the application of the brakes will be more rapid.

All of the several modifications may be provided with suoli auxiliary features as the ball bearings 37, Fig. 1, and lubricating plug 38, as maybe necessary to provide a practical construction which will operate with the maximum efficiency.

From the above it will be seen that the present devices constitute simple and practical mechanisms ada-pted to positively, quickly and easily take up the 'excess slack in the brake rigging of railway cars and is designed to always give the maximum power with a minimum amount of effort and time.

l realize that considerable variation is possible in the details of construction and arrangement of parts without departing from the spirit of my invention, and therefore do not intend to limit myself to the specific Jorm shown and described.

I claim:

1. 1n a mechanism of the character described. in combination, a relatively fixed member adapted to be secured to the car, a hollow longitudinally movable member supported thereby capable of movement to quickly take up the excess slack in the brake rigging holding means coacting therewith, and power multiplying mechanisiii telescoping with said hollow member adapted to be operated after the longitudinal movement of said second mentioned member to exert the braking pressure upon the wheels.

Q. In a mechanism of the character described, in combination, a supporting member adapted to be secured to a car body. a tubular member adapted to slide in said supporting member, a pull i'od within said tubular member and movable therewith adapted to be moved to take up the excess slack of the biake rigging. means for holding said tubular member in its moved position after all ofthe slack has been taken up, a hand wheel, and threaded connections between said hand wheel and said pull rod whereby a turning of the hand wheel will cause a braking pressure to be exerted upon the wheels. l

' 3. ln amechanism of the character described, in combination, a supporting member secured to the car body, a tubular member carried thereby and capable of independent initial movement in a direction to take gp the excess slack of the brake rigging, automatically operated means for holding saidmember in its moved position after the slack has been taken up, a pull rod connected with the brake rigging and mounted in said tubular member,a hand wheel, and threaded connections between the hand wheel and the pull rod whereby a .turning of the hand wheel will cause a further relative movement ofsaid pull rod.

4. ln a mechanism of the character described, in combination, a supporting member, plying means connecting the hand wheel and pull rod at one end, the opposite end of which'pull rod is adapted to beconnected with the brake` rigging, an intervening tubular member between the pull rod and the supporting member and connected with the hand wheel whereby an upward pull on the hand wheel will cause a Vrelative upward movement of said intervening tubular member, and means adapted to hold said intervening member in its raised position with the excess slack taken up.

In a mechanism of the character described, in combination, a supporting member, a hand wheel, a-pull rod, power multiply'ing means connecting4 the handy wheel. and pull rod at oneend, the opposite end of which pull rod is adapted to beconnected with the brake rigging, an intervening member between the pull rod and the supporting member and connected with the hand 'wheel whereby a bodily upward movement of the hand wheel will cause a relative upward or longitudinal` movement of said intervening member, and means adapted to hold said intervening member in raised position with the excess slack taken up, said means including a dog adapted tov grip said intervening member at any point in its raised position.

6. ln a mechanism o1 the character described, in combination, a supporting member, a hand wheel, a pull rod, power multiplying means connecting the hand wheel and pull rod at one end, the opposite end of which pull rod is adapt-ed to be con- I a hand wheel, a pull rod, power multiing member between the pull rod and the supporting member and connected with the hand wheel whereby an upward pull on the hand wheel will cause a relative movement of said intervening member, and means adapted to hold saidI intervening member in its raised position with the excess slack taken up, said means including a dog having an opening through which said intervening member is adapted to pass, the edges ot' said opening adapted to bite the side of said intervening .member and hold the same in its moved position and to release'said intervening member whenthe dog is moved to a right angle position.

7. In a 'mechanism of the character de-4 scribed, yin combination, a relatively fixed,

supporting member, a member mounted therein capable of movement in a direction to apply the brakes, means for moving said member to rapidly take up the slack, means 8. ln' a mechanism of the character de-v scribed, in combination, a relatively xed support adapted to be secured to a car body, a member mounted therein and capable of movement in a direction to apply the brakes, `and a dog connecting with said member adapted totake up and hold the initial. movement of said member required to take up the excess slack in the brake rigglng.

9. lin a machinev of the class described, yin combination, a relative fixed supporting member, a member mounted therein, capable of bodily movement with associated parts in a direction to apply the brakes, a right and left hand .threaded member geared between said member and a threadedv brake connection, both operative to apply the brakes whereby maximum power may be exerted with a minimum amount of time.

ture in the presence ot'two witnesses.

Witnesses:

CHARLES E. B.; SMITH, T. B-.Si fu nected with the brake rigging, an interven-