US99509A - Improved car-brake and starter - Google Patents

Description

LW. WILSN.V

Car Starter angd Brake.

Patented 4Feb. l. 1870.Y

am arpa.

J. WALL WILSON, or 'NEW Yoan, N. Y.

Lcttersllatent No. 99,509, elated February 1, 1870.

IMPROVED CAR-BRAKE AND STARTER.

HOM-

The Schedule referred to in these Letters Patent and -makng part of the same.

To all whom it may concern.-

Beit lmownthat I, J. WALL WILSON, of the city, county, and State of New York,.have invented a new and useful Improvement in Car-Brakes and Starters, of which the following isV a t'ull,'clear, and exact -de scription, reference being had to the accompanying drawing, forming part of this specification, and in which i Y Figure 1 represents a plan of the running portion of a horse-railroad car, with my improved brake and starter applied thereto.

Figure 2, a mainly central longitudinal section of the same.

Figure 3, a side View, from the exterior, of a detached portion, showing a clog or shoe of one of the brakes, with devices for operating the saine, and

Figure 4, an inside view thereof, on au enlarged scale.

Similar letters of reference indicate corresponding parts.

li/Iyimprovement is applicable to horse-railroad cars, 'and other vehicles; and

The invention consists in a novel and advantageous` combination'of mechanism, whereby the same motion that is used to put on the brakes, serves to actuate or generate a power for starting the car after the brakes are released, or the brakes maybe operated at pleasure, without actuating the'starting-means, and the invention includes a new and useful combination ot' devices, including eccentrics to the clogs or. shoes of the brakes, i'or operating the same.

Referring to the accompanying drawing- A represents the frame, which carries the running gear of the car, and

B B', its front and rear wheels, to which X X' are These wheels are provided, on their inner side or face, with supplementary peripheries, 0,0', and circular racks or ratchet-wheels, D D', both of lesser diameter than the wheels B B', so as not to' come in contact with the ground.

The brake or 4brakesiare made un, in part, of' clogs or shoes E E', and suitably-clothed or formed frictionwheels F F', the latter `being designed tobe operated when it is required'to generate a power for starting the car after the brake-force or pressure has been removed, whilethe clogs or shoes E E' are used altogether, or more exclusively, when, in putting on the brakefforce, as in going down-hill, it is not required to accumulate a power for starting the car again. Both of -these brake-means are or may be operated by one and the same primary device, at either or opposite ends of the car,rand which may be an ordinary brake-shaft or rod,

' G or G', provided with a crank or handle, a or a', and

the arrangement here shown is such, as that ou turning either of said shafts in the one direction, the friction-wheels F F', and the brake-shoes E or E', are thrown into ,working-contact with the peripheries C C', of the wheels B B', and on turning such shaft or shafts G or Gr' in the reverse direction, beyond the point or extent necessary to release the fl'ictionqvhcels F or F' from working-contact, the clogs or shoes vE E are 'alone brought to bear upon the treads of the Wheels B B. To accomplish this twofold brake-action, I

adopt the following combina-tion and arrangement of them, and said friction-Wheels are provided with pulleys or small barrels, c c', made fast to `them on their inner sides.

The upper' shafts H H also have, loosely arranged upon them, directly over the barrels c c', small pulleys, ll 'd'.

J J are intermediate cross-shafts, turning, at their ends, in bearings made fast to the main frame, and having small barrels e cj,'and c' e f', fast on them.

Chains q lr and g' h' are made fast at their one end,

andwound in reverse directions around barrels M',-

at the lower ends of the operating-shafts Gr G', or it may be a single chain to each of said shafts, wound in reverse directions around its bari-elfi or i', so as virtually to form two chains.

The opposite ends of these chains, g hand g h', are made fast, the ones, g g', to the barrels ff, and the others, la. h', to (either directly, or through rods k k') opposite arms or' a lever or beam, K, pivoted, as at 7,7 to abrace extending across the main frame, which l beam isconnected, by rod-s l l', to the radial pins or projections on 'm' on the shafts 1 l. The barrels e e and cv c' have secured to them, chains u u', which chains are extended and lapped around the barrrels c lc' of the loose friction-Wheels, and from thence passed up 'overtheloose pulleys cl fl', and made fast, respectively, to sliding bars L L', carrying, at their one end, pawls o o', which gear, when drawn up over them, with the ratchetavheels I) D..

These sliding bars L L' are made fast, at their otherends', to springs M M.

N N' are springs, which serve to draw back'the brakes when released, said springs being arranged to 'pull on the brakes through their lower connecting-shafts I I'. Then applying the clogs or shoes EE' to the wheels,

they are not onlydrawn against the wheels B B' by the pull of either chain h It', (according to the end ot' the car from which the brakes are being worked,) and rods k lt and Z l', through the action ot the beam or lever K, on suitably turning either operating-shaft G or G', to wind the chain It or 71,' upon its barrel, but the rods l l', in pulling ou the shoes E E through the shafts I 1', also turn said shafts, which have their end-hear-y ings, by eccentrics l P'-, within the shoes, so that said eccentrics, being turned together with the shafts I I', bring up, in a gradual and powerful manner, the shoes E E against the wheels B B'. This action of the eccentric-s l P on the shoes, hf addition to the direct swinging action or pull on them, through the radial connection of the rods l l', or other suitable means, with the shaftsl I' carried through the ecccntrics by the shoes, is an' important feature in the operation of the brakes. y l

In lhns applying the brake-power through the shoes E E', and which may be done in going down-hill, or when it is not necessary to accumulate a power for starting the car again, the friction-wheels F F are not brought up to act as brakes against or on the wheels B B', inasmuch as in turning the shafts G or G', to apply the shoes E E' to the wheels, the chains v o.' ,y are slacked, and thef shafts J' J' consequently not turned, which causes no pull to be made ou the chains u or u. But on turning the shafts G or G in a reverse direction, and to an extent beyond that which is necessary to merely release the shoes E E from frictional contact wit-h the wheels B B', then the chains h or h' are slacked, and the chains g or g' tightened or pulled upon, so as to turn the shafts J or J', an'd cause pull on the chains u or fu', which draws the frictionwheels F or Fup against the wheels B B', to make them act against the periphery O or C', to accumulate a starting-power, whilst the shoes E or E act as brakes, but not turning the shafts I or I', to operate the eccentrics P P', by reason of the barrels c or c and their wheels F or F being loose on the swinging shafts I or l'. On the friction-wheels F or F' being thus brought up against said'peripheries C or C', in being /rotated by the wheels B or B', their barrels or pulleys cor cwork the chains u or aby the coiled lap of the samearound said barrels, so as to pull on the sliding bars L or L against the action of the springs M or `M, and cause their pawls o or o' to be drawn up over and into gear with the ratchet-wheels D or D'. This causes a power to be rgenerated or accumulated for starting the car again, inasmuch as ou releasing hold of the shafts G or G', thedistcnded springs M or M are free to iiy back and through the sliding bars L or L', and their pawls o or 0' pull on the ratchet-wheels D o1' D to turn the wheels B or B so as to make them act as drivers to the car.

The strength of the starting-power will be determined by the amount of distension given to the springs M or M and forward feed or throw of the pawls o or o', over the wheels D or D', which, of course, is regulated by the amount of brake-force, as applied by the brakeman, or length of time the wheels F or F' are held in contact Iwith the wheels B or B', and the speed of the latter at vthe time.

What is here claimed, and desired to be secured by Letters Patent, is

'.l. lhe arrangement'of the eccentrics P or l" in th body of the swinging shoes E or E', and fast on their shafts I or I', which carry operating radial pins m or m', foroperation, substantially as specified.

2. The combination, with the brake-slices E E', of

the friction-wheels or brakes F F', the ratchet-wheels or racks D D', the starting-springs M M', together with their pawls, andthe chains, rods, and mechanism by which the shoes E E' or the friction-wheelsy F -F' may be operated at pleasure, as required, essentially Witnesses FRED. HAYNEs, M. J. SHANLY.

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