US1515855A - Hand brake - Google Patents

Description

Nov. 18, 11924., 1,5%,855

s. B. HAsELTlNE HAND BRAKE Filed May s, 1922 fig! K Ira/enfer v Jing/b? Hael''ne STACY HASELTINE, or omoaeo, minors, Assioma, BY Mnsnn nss'ren'nmnrs,

no lw.y n. :am me., a comonarron or nnnnw .application med May 8,

To all whom t may concern: l

Be it'known that I, Sauer B. HAsEUrINn,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful improvement in Hand Brakes, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming Ial part-of this specification. v

This invention relates to improvements in hand brakes.

One object of the inventionis to provide an eiiicient hand brake mechanism of the ratcheting type, especially adapted for railment wherein all of the parts may be manuactured at comparatively small expense and easily assembled; and to provide a housing wherein the chain winding drum is disposed in one chamber separate from the ratchet @il mechanism to lthereby prevent dangen of the parts fouling 'duringy operation.l

ln the drawing ormmg a part of. this specification, Figure 1 is a vertical, sectional view taken parallel to a wall to which the fi' mechanism attached, the section corresponding snbstantiall to the. section line i-l of Figure 2. igure -2 is a vertical, sectional r'iew taken perpendicular to the supporting 'wall and corresponding to the 1 section line 2-2 of Figure 1. And Figure- 3 is a horizontal detail sectional view correspending substantially to the section line 3--3 of Fig for-etre 1. f ln said drawing, indicates an end wall of a car to which the improved mechanism is adapted be applied. vThe mechanism .includes a housing or casing A, the latter being of snbstantially cylindrical formation having an integral-outer end wall 11 and an annular inner end wall 12 with a central lope'nin 13. The casing A is formed with a longitudinally extending opening at the bottom and at one side, as indicated at 14 I and is provided also with an annular ianffe M l5 on the interior located about two-thirds up the 1922. serai no. stalen 'of the distance from theinner to the outer end of the casing and forming part of the partition by which the casing is divided into v v two chambers.'

rlille outer end wall 11 of the casing isv formed with an inwardly extending centrallydisposed annular boss 16 having a square countersunk recess `17 therein. Seated within the recess 17 is a squared end 18 of ,re-

duced size formed at the outer end of a tubular bearing member 19, the latter having at its inner end a circular flange'20 occupyingthe opening 13 at thej'inner end of the casing A.

Rotatably mounted or journaled on the bearing member 19 is a drum member B.

The latter is provided with longitudinally spaced annular flanges' 21 and`22 between which the chain or other flexible connection 23 is adapted to be wrapped on `the drum section proper. To attach the end link of the chain, the drum member B is formed with a hook 24 over which the link may he 'placed before the drum is assembled on the tubular bearing 19.

To the right of the partition formed by the annular housin flange 15 and flange 22, the drum member is formed with a narrow journal 25 and outwardly spaced therefrom with another journal 26 of lesser diameter. A hanger or fulcrum member C, of U-c'ross section, as shown in Figure 3, is journaled on said bearings 25 and 26 and so as to straddle a ratchetwheel 27 which is locked with thel drum member by means of arcuate keying lugs 28-28 shown best in Figure 1. .After the ratchet wheel and carrier C have Abeen assembled on the drum member B, the latter is applied over the annular boss 16 after which the tubular bearing 19. is inserted in place and the parts heldin, assembled relation by means ofthe short bolt 29 "which holds the adjacent intertting ends ont they bearing 19 and annular boss 16. l

Pivotally mounted on the carrier C as by the rivet 3() is an operating handle Aor-lever 31 normally adapted to hang in a depend-`v SaidA ing vvertical inoperative position. handle 31, at its pivotedA end, is-recessed so as to provide laterally spaced flanges 321-32 as shown in Fi within the recess between the flanges 32-32 is a pawl D havinga tooth 33 adapted to engage with the teeth of the ratchet wheel 2'?. baid pawl D is mounted on a mvet 34 gure 3. Pivotally mounted l which is sustained at its ends in the side walls or flanges of the carrier C. `The side .Thehandle 31 is formedwith an inte handle to move relatively to. the rivet.

. cross pin orbar `36 which engages wit a tail-piece 37 on the pawl D, said tail-piece being on the opposite side of the plvot to that of theztooth 33. When the handle 31" is pulled in a winding-lip direction,1.i.`e., in a clockwise dlrection as vlewed 1n Figure 1, it swings about its own pivot '30. .on the carrier C, thereby causing the, awl D to -be oscillated about the pivot 34 o the latter and thus throwing the tooth 33 quickly into .engagement .with the teeth 'of the ratchet- Wheel 27. When thehandle 31 is released, it falls to its vertical inoperative position as shown in--Fi re 1 and allows the pawl to vbe disengage from the ratchet'wheel.

To preventl the drum and ratchet wheel .from rotating accidentally in a reverse direction, I.have'.pr'ovided a locking dog E which is pivotally supported rom'the heusing as by apivotl` 1nf38, said dog having a tooth 39 engagea le with the teeth of the ratchet wheel27. Underneath the toothv39' is placed a spring 40 so as to normally in luence the tooth 39 into' operative -pos1tion. On the oppositeside'of. the pivot 38, the dog E is formed with a tail-piece 41' against which is adapted to be swung, a rounded end 42 of a release lever 43. Said release lever is not fixed to the housing, but is detachable therefrom, said lever being pivotally sup ported from the housing byimeans of oppositely `extended pivot lugs 44 thereon 42 so that the leverage ratio is multiplied,

thus enabling me toeasily disen" e the dog. from the ratchet wheel. ga

be noted that,l bymmoun'l g the carrier C to straddle the ratchetheel 27, a better support for the operating handle is obtained and one which is free from eccentric load.

The carrier C has its outer curved web 46 so placed and of such length as to provide,

.in eli'ect, a closure for the portion of the lopening inthe .housing through which thevthe combination with a hollow casing of operatinglhandle necessarily oscillates in operating t e brake. All of, the parts may be manufactured at comparatively small expense; an unusuall large bearing area is ob ained for the win ing drum to thereby minimize wear; and the l parts may be shipped in assembled condition without danger of loss ofthe arts.

I have herein shown and descri ed what VI now consider the preferred manner of n 4carrying out the invention, but the same is flanges 32 `of the handle 31. are. suitablyslotted as indicated at 35 to permlt the merely illustrative and I contemplate all changes and modifications that come within the scope of the claims `appended hereto.

I claim: j

1. In a hand brake for cars and the like, the combination with a rotatable member and a ratchet wheel rotatable in unison therewith; of a carrier oscillatable relatively to said'wheel; a pawl pivotally mounted on saidV carrier adapted to cooperate with said ratchet wheel; an operating handle pivoted to said carrier at a .different point and having a portion thereof recessed to straddle said pawl and cooperable with the latter to move` it to Voperative position; and locking means for-'preventing rotation of saidl member in an' unwinding direction. l

"2. In a hand brake of the character described, the combination with a rotatable member havinga ratchet wheel movable in unison therewith; of a carrier oscillatable relatively to said wheel; a pawl pivotally mounted onsaid carrier and adapted to cooperate with said ratchetwheel, said pawl having a tooth on one side and a tail piece on the. opposite side of its pivot; an operating handle. also pivoted to said carrier at a different point and having a cross piece engageable over said tail piece Vof the dog to thereby actuate thev latter to operative position when the handle is moved in a direction to effect application of the brake; and locking means cooperable with -said ratchet Wheel to prevent accidental rotation in an unwinding direction. I

3. In a brake of the character described, thecombination with a housing adapted to be secured to a car wall or the like; of a chain winding drum member rotatably mounted within'said housing and having a ratchet wheel rotatable in unison therewith;

of means for effecting step by step movement of said drum member ina winding di rection; a spring-influenced locking dog pivotall mounted within said housing and cooperalile with said ratchet wheel; and a release lever detachably and pivotally mounted on said housing and having a cam end adapted to cooperate with said dog to disenga the latter from the ratchet wheel, .said re ease lever being movable laterally of its pivotal axis to detach the lever.

4. In a brake of the character described,

generally cylindrical form having an outer end wall and adapted to be secured to a car Wall or the like, said casing having also an intermediate partition; of a spindle extending from the inner to the outer end of said casing centrally'thereof; a winding drum member rotatably mounted on said spindle; a ratchet wheel secured to said drum member adjacent the outer end thereof and outwardly of said partition; a carrier oscillatably mounted on said drum member and having arms straddling said ratchet wheel;

paWl-operating means on said carrier between said arms; and means for preventing accidentalgrotation of said drum member in an unwinding direction.

5. In a brake of the character described, the combination with a hollow casing of generally cylindrical form having an outer` end wall and an annular flange at its inner end,` thereby providing an opening in said casing; of a spindle within said casing having a. flange at its inner end fitting within the opening of said annular llange, said spindle having socketed engagement at its outer end with the end wall of the casing;

a rotatable member mounted on said spindle; means for el'ecting step by step rotation thereof in a direction to apply the brake; and means for preventing accidental rotation of said member in a reverse direc tmf n a brake of the character described, the c mbination with a hollow casing of generally cylindrical form having an outer end wall and an annular flange at its inner end thereby providing an opening in said casing, of a spindle within said casing having a flange at its inner end fitting within the opening of said annular flange, 'said spindle having socketed engagement at its outer end with the end wall of the casin a rotatable member mounted on said spindle; means for ellecting step by step rotation thereof in a direction to apply the brake: and means for preventing accidental rotation of said member in a reverse direction, said last named means comprising a spring-influenced dog pivotally mounted within the casing and having avt-00th at one .side of its pivot and a tail piece at the opposte side thereof, and a release lever detachably and pivotally mounted on said casing and having a cam end engageable with said tail piece;

In witness that I claim the foregoing I have hereunto subscribed my name this 18th day ol Apr., 1922.

STACY B. HASELTINE. Witnesses:

CARNE GAILING, ANN BAKER.A

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